Wire cutting machine and method

专利摘要:
Of the three groove rolls 11 to 13 on which the top wires 14 are caught, two groove rolls 11 and 12 are disposed up and down, and the top wires 14 are placed between these groove rolls 11 and 12. Run) vertically. The workpiece 9 is moved horizontally and pushed against the wire 14 running vertically. Preferably, the groove roll 13 is disposed at a height position approximately equal to the lower groove roll 12.
公开号:KR19990008077A
申请号:KR1019970707601
申请日:1997-02-28
公开日:1999-01-25
发明作者:고타로 미요시；도시유키 스즈키；고요시 다카하시；야스하루 고토；아키히로 치바；시즈오 와다
申请人:가미니시 히토시；도쿄 세이코(주)；
IPC主号:

专利说明:

Wire cutting machine and method
The wire cutting machine is also called a wire saw, and as shown in Fig. 50 or 51, three groove rolls 601, 602, 603 are arranged in parallel to each other at positions corresponding to the vertices of triangles of a type close to an equilateral triangle. Equipped with. The cutting wire 604 is extended in parallel at regular intervals in the grooves of these groove rolls 601 to 603. While cutting the wire 604 in one direction and spraying a processing liquid containing abrasive particles by a nozzle (not shown), the cutting member 600 is pushed against the wire 604 traveling horizontally, and the cut is performed. Cut the ash 600 roundly.
In FIG. 50, the cut material 600 is held below the groove rolls 603 and 602. The to-be-cut material 600 is cut | disconnected by pushing the to-be-cut material 600 toward the wire 604 which runs between the groove roll 603 and the groove roll 602 in a horizontal direction. In FIG. 51, the cut material 600 is held above the groove rolls 602 and 603. The to-be-cut material 600 is cut | disconnected by pushing the to-be-cut material 600 toward the wire 604 which runs between the groove roll 602 and the groove roll 603 in a horizontal direction.
In recent years, especially in the semiconductor industry, large diameters of semiconductor wafers are desired to improve productivity. In order to manufacture a large diameter wafer, a large diameter semiconductor crystal rod (cut material) is prepared. In order to cut a large diameter rod, of course, a wire type cutting apparatus is also enlarged.
As shown in FIG. 50 or FIG. 51, in the apparatus which cut | disconnects while moving a to-be-cut material upward or downward, when the to-be-cut material is large diameter, the height of a device will not become high in watermelon. When the height of the device is high, high rigidity is required in a frame or the like in order to maintain high precision. Moreover, workability | operativity, such as a hand operation of a cutting wire and a removal of a to-be-cut material, deteriorates. In addition, in the form shown in FIG. 50, since the processing liquid containing abrasive grains accumulates in the cut groove | channel of the to-be-cut material, it hardens, and cutting efficiency becomes bad. In the form of the type | mold shown in FIG. 51, there exists also a problem that process liquid is dripped and it becomes difficult to penetrate a process liquid.
The present invention relates to a wire cutting device and method suitable for cutting so-called fragile materials such as semiconductor materials, magnetic materials, ceramics, etc. into wafer shapes.
1 to 8 show a first embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows typically the whole structure of a wire type cutting machine.
The perspective view which expands and shows the groove roll group in a wire cutting machine.
FIG. 3 is a perspective view showing an enlarged configuration of a winding mechanism by unwinding a saw wire in a wire cutting machine. FIG.
4 is a perspective view showing a third driving method of the groove roll;
5 is a circuit diagram showing a motor driving circuit.
6 is a circuit diagram showing another example of a motor driving circuit.
7 is a perspective view showing a fourth driving method of the groove roll.
8 is a diagram schematically showing a drive device for a groove roll.
9 to 49 show a second embodiment of the present invention.
The perspective view which expands and shows the groove roll group in a wire cutting machine.
It is a figure which shows typically a part of the whole arrangement structure and control system of a wire-type cutting processing apparatus.
11 to 15 are views showing the groove roll unit and its drive system.
11 is a front view showing the groove roll unit and its drive system partially broken.
12 is a side view of the groove roll unit, in which part thereof is broken and shown.
Fig. 13 is a front view showing the entire drive system.
14 is a longitudinal cross-sectional view showing an enlarged portion of a drive system.
Fig. 15 is a side view of a part of the groove roll unit in which part of the groove roll unit is broken by showing a shape when the work is being cut.
FIG. 16 and FIG. 17 show a workpiece conveying apparatus, FIG. 16 is a side view showing a part broken, and FIG. 17 is a rear view.
18 to 28 show details of the workpiece holding apparatus.
18 is a plan view showing a part of the work holding device broken.
19 is a cross-sectional view taken along the line VII-VII of FIG. 18.
20 is a cross-sectional view taken along the line VII-VII of FIG. 18.
Fig. 21 is a side view showing a part of the work holding device by breaking.
22 to 24 show the work holding member, FIG. 22 is a plan view, FIG. 23 is a front view, and FIG. 24 is a bottom view.
25 to 27 show a tightening piece, FIG. 25 is a plan view, FIG. 26 is a side view, and FIG. 27 is a front view.
Fig. 28 is a front view showing a state where a fastening piece is installed on a work holding member.
29 to 35 show capstan mechanisms, winding-side dancer mechanisms, and tension detection devices included in the saw wire winding mechanism;
29 is a front view of the capstan mechanism, the winding side dancer mechanism and the pulley wheel.
30 is a cross-sectional view taken along the line VII-VII of FIG. 29.
FIG. 31 is a cross-sectional view taken along the line VI-XI of FIG. 29; FIG.
32 is a cross-sectional view taken along the line II-II of FIG. 29.
33 is a cross-sectional view taken along the line XIII-XIII of FIG.
34 is a cross-sectional view taken along the line XIV-XIV of FIG. 29;
FIG. 35 is a view in the direction of the arrow from the line VV-VV of FIG. 29; FIG.
36 to 39 are views showing the release side dancer mechanism and the side part included in the saw wire release mechanism.
Fig. 36 is a front view of the unwinding side dancer mechanism and the side section.
FIG. 37 is a cross-sectional view taken along the line VII-VII of FIG. 36. FIG.
38 is a rear view of the side arm portion;
FIG. 39 is a cross-sectional view taken along VII-VII line in FIG. 36. FIG.
40 is a front view of the unwinding side traverse mechanism and the rewind side traverse mechanism;
41 to 44 show the unwinding side horizontal feed mechanism;
FIG. 41 is a cross-sectional view taken along the line VI-XI of FIG. 40; FIG.
FIG. 42 is a cross-sectional view taken along the line II-XIII of FIG. 40; FIG.
FIG. 43 is a cross-sectional view taken along the line XIII-XIII of FIG. 41 or FIG.
44 is an enlarged perspective view showing an interlock mechanism and a drive mechanism of a movable shaft;
45 is a diagram showing a transverse movement speed pattern for explaining the control of the winding-side transverse movement;
Fig. 46 shows the principle of the winding direction detection;
47 to 49 show a winding direction detecting device.
Fig. 47 is a longitudinal sectional view of a winding direction detecting device.
48 is a cross-sectional view taken along the line VII-VII of FIG. 47.
FIG. 49 is a sectional view along the VII-VII line in FIG. 47; FIG.
Fig. 50 is a perspective view showing a conventional example and showing the arrangement of the groove rollers and the moving direction of the cutting material.
Fig. 51 is a perspective view showing another conventional example and showing the arrangement of the groove rollers and the moving direction of the cutting material;
An object of the present invention is to provide a wire cutting device and method which can lower the height of the device.
It is another object of the present invention to provide a wire cutting device and method with improved workability.
The present invention also provides an easy-to-maintain wire cutting device, method and groove roll unit.
The present invention also aims to prevent or reduce vibration of the cutting wire that travels between two groove rolls.
It is another object of the present invention to continuously adjust the tension of the cutting wire.
Another object of the present invention is to reduce the weight of the bobbin for winding the cutting wire.
The present invention also includes a plurality of rolls such as a dancer mechanism, a capstan mechanism, and the like, in which a cutting wire is hung on a plurality of times by these rolls, an object thereof is to stabilize the running of the cutting wire. It is done.
An object of the present invention is to provide a cutting material holding device which can stably adjust the angular position of the cutting material in two directions.
Another object of the present invention is to provide a winding direction detection device capable of automatically detecting a winding direction of a wire wound on a bobbin.
The present invention also enables stable horizontal feed control on the winding side of the cutting wire.
The wire-type cutting processing apparatus which concerns on this invention runs a cutting wire by hanging a cutting wire to a some parallel grooved roll, and rotationally drives at least 1 grooved roll, and also contains the abrasive grain In cutting a to-be-processed material by supplying a process liquid, at least 2 groove rolls of the said some groove roll are arrange | positioned up and down so that a cutting wire may run substantially perpendicularly between these groove rolls, The cutting material conveying apparatus which advances a to-be-cutted material substantially horizontally with respect to the said cutting wire which runs substantially vertically is characterized by the above-mentioned.
The wire cutting method according to the present invention includes cutting wires on a plurality of parallelly arranged grooved rolls, driving the cutting wires by rotationally driving at least one grooved roll, and further comprising abrasive particles. In a wire cutting method for cutting a cutting material by supplying a processing liquid, at least two groove rolls of the plurality of groove rolls are disposed up and down so that the wires for cutting are substantially vertically interposed between these groove rolls. The cutting material is made to move forward and backward substantially horizontally with respect to the cutting wire running substantially vertically.
In this specification, nearly vertical includes up to ± 45 degrees of inclination with respect to vertical, and nearly horizontal includes up to ± 45 degrees of inclination with respect to horizontal. In addition, a roll includes all the rollers and other rotating things.
According to this invention, the cutting wire is made to run substantially perpendicularly, and the to-be-cut material is cut | disconnected by such a wire which runs substantially vertically. The material to be cut is pushed by a wire running almost vertically while moving in a substantially horizontal direction. Therefore, compared with the conventional apparatus which moves a to-be-cut material to an up-down direction, the height of an apparatus can be made low. Thereby, workability | operativity, such as a hand operation of a wire and attachment and detachment of a to-be-cut material, improves. In addition, since the processing liquid containing the abrasive grains supplied to the contact point between the cutting material and the cutting wire, that is, the processing place falls along the processing surface of the cutting material, the processing liquid can be sufficiently infiltrated and The processing liquid is not clogged with the grooves.
In one embodiment of the present invention, a third groove roll is provided in addition to the two groove rolls arranged up and down, and the third groove roll is almost at the same height position as the lower groove roll in the two groove rolls. Is placed on. That is, the three groove rolls are disposed at positions corresponding to almost vertices of a right triangle having vertical and horizontal sides. The cutting wire travels almost horizontally between two groove rolls located below.
Since the to-be-cut material is cut by the cutting wire which runs substantially vertically as mentioned above, moving to a substantially horizontal direction, it enters inside of said right triangle with progress of cutting. The cutting chips which occur when the cutting material is cut fall downward. Since the two groove rolls located in the lower part are disposed at substantially the same height position at intervals, the cutting debris accommodating portion can be provided between these groove rolls, and this cutting debris is placed between these two groove rolls. It is possible to easily remove from.
There are various kinds of driving methods of the plurality of groove rolls as described in the embodiments described later. In an embodiment in which the three groove rolls described above are disposed at positions corresponding to almost vertices of a right triangle, the third groove roll is a drive roll driven by a motor, and the rotational movement force of the drive roll is used as the power transmission mechanism. It is desirable to take a configuration that delivers to the two groove rolls through. The drive motor can be arranged downward.
The said power transmission mechanism is comprised, for example by the belt wheel provided corresponding to two upper and lower groove rolls, and the 3rd groove roll, respectively, and the belt caught by these belt wheels.
The third groove roll is a drive roll. The cutting wires hooked on the upper and lower two groove rolls and the third groove roll, and the belts caught on the belt wheels corresponding to these groove rolls, are simultaneously folded and bent at a portion of the third groove roll. Accordingly, the length of the cutting wire in contact with the groove of the peripheral surface of the third groove roll and the length of the belt in contact with the peripheral surface of the belt wheel corresponding to the third groove roll are relatively long. The driving force of the third groove roll is effectively transmitted to the cutting wire and the belt.
The power transmission mechanism preferably comprises two torque controllable couplings. The torque controllable coupling is provided between the shafts of the two upper and lower groove rolls and the belt wheels provided corresponding thereto. The belt wheel installed in correspondence with the third groove roll is fixed to the shaft of the third groove roll.
If such a drive system is expressed from a separate viewpoint, it becomes as follows. That is, the drive system of the groove roll includes a motor for rotationally driving the third groove roll, an output shaft corresponding to the two groove rolls, and a power transmission mechanism for transmitting the rotational movement force of the motor to the output shaft; And a torque controllable coupling provided between the shafts of the two groove rolls and the output shaft corresponding thereto.
This drive system has the following characteristics. That is, since all the groove rolls are rotationally driven, the slip between the cutting wire and the groove roll hardly occurs. Since the slip hardly occurs, the wear of the grooved roll is small and the degree of wear is equalized among the plurality of grooved rolls. In addition, even if there is a slight difference in the diameter of the groove roll, the transmission torque in the coupling can be adjusted so that the rotational resistance acting on the two groove rolls becomes zero or almost zero. As a result, the circumferential length error of the plurality of groove rolls is allowed.
Also preferably, two upper and lower groove rolls and a third groove roll are rotatably supported by the frame, and the frame is detachably attached to the base of the wire cutting device. This frame and the three groove rolls supported by it constitute a groove roll unit.
By uniting a plurality of groove rolls and making them detachable to the base, the home roll unit can be detached from the base during maintenance and taken out of the processing apparatus. Since the groove roll unit can be placed in a wide place, work such as replacing the groove roll and repairing the surface groove of the groove roll can be facilitated.
In the configuration in which the groove roll is unitized in this manner, when the groove roll unit is installed on the base, the output shaft of the drive device of the processing apparatus and the shaft of the at least one groove roll are engaged by a detachable coupling.
In a preferred embodiment, an annular elastic seal is provided on the frame so as to surround the axis of the groove roll protruding from the frame. When the groove roll unit is installed on the base, the annular elastic sealant is in contact with the hole passing through the shaft opened in the partition wall of the frame. This partition partitions the cutting chamber in which the drive side and the groove roll are arranged. In the cutting chamber, a processing liquid containing abrasive particles is sprayed onto the wire as described above. In addition, cutting chips occur. The presence of the annular seal prevents such foreign matter from entering the room in which the drive device is installed.
In a preferred embodiment, a wire releasing mechanism for sending the cutting wire to the groove roll and a wire winding mechanism for winding the cutting wire from the groove roll are simultaneously disposed on one side of the groove roll.
The length of an apparatus can be shortened compared with the structure which arrange | positions a wire releasing mechanism and a wire winding mechanism to both sides of a groove roll.
The structure according to the present invention which can prevent or reduce the vibration of the cutting wire running between two groove rolls, hangs the cutting wire to at least two groove rolls arranged in parallel, and at least one groove roll. In the wire-type cutting processing apparatus which runs the cutting wire by rotationally driving and supplies the processing liquid containing abrasive grains, and cut | disconnects a to-be-cut material, the cutting wire becomes close to at least 1 groove roll. It is characterized in that a wire guide is formed or a groove (which may be formed by a running wire) may be formed.
Two groove rolls may be arrange | positioned up and down like the wire-type cutting apparatus mentioned above, and may be arrange | positioned left and right. That is, the wire guide can be applied to the wire type cutting device of the conventional type in which the cutting wire runs vertically, or to the wire type cutting device of the conventional type in which the cutting wire runs horizontally.
By the existence of the wire guide, the vibration of the cutting wire traveling between the two groove rolls can be prevented or reduced so that the cutting accuracy is increased. In addition, it is possible to prevent the processing liquid containing the abrasive grains and the cutting chips from adhering to the groove rolls, and to prolong the life of the groove rolls.
Preferably, the wire guides are provided on both sides of the conveyance path of the cut material. In order to prevent the processing liquid or the cutting chips from sticking to the groove roll, the wire guide is located in a position between the cutting path of the cutting material and the at least one groove roll, and is forward in the traveling direction of the cutting wire than the feeding path of the cutting material. Is placed in the position of.
The structure by this invention which can adjust the tension of a cutting wire continuously is as follows.
That is, a groove roll group including a plurality of groove rolls arranged in parallel and in which the cutting wire is caught, a wire unwinding mechanism for supplying the cutting wire to the groove roll group, and a wire winding mechanism for winding the cutting wire from the groove roll group In the wire-type cutting device provided with a step, at least one of the wire unwinding mechanism or the wire winding mechanism, a dancer mechanism for adjusting the tension of the cutting wire is provided, the dancer mechanism is rotatable fixed roll and up and down A movable roll is included, and a cutting wire is caught between these rolls, and the movable roll is supported by a mechanism capable of continuously positioning the roll.
An example of the above-mentioned continuously adjustable mechanism is a mechanism including an air cylinder. The air cylinder is controlled based on the detection call from the tension sensor installed at the place where the tension is to be adjusted.
According to this configuration, the tension of the cutting wire can be adjusted arbitrarily and steplessly during the running of the cutting wire.
The structure by this invention which can aim at the weight reduction of the bobbin winding the cutting wire is as follows.
That is, a groove roll group including a plurality of groove rolls arranged in parallel and in which a cutting wire is caught, a wire releasing mechanism for supplying the cutting wire to the groove roll group, and a winding bobbin winding the cutting wire from the groove roll group. In the wire type cutting apparatus provided with the wire winding mechanism which consists of these, a capstan mechanism is provided only in a wire winding mechanism among a wire pulley mechanism and a wire winding mechanism, and the wire tension of the winding bobbin side is a groove roll group side by this capstan mechanism. It is characterized in that it is adjusted to be lower than the wire tension of.
The tension of the groove roll group can be set to a size suitable for cutting of the cut material, and the tension on the winding side can be set to a value weaker than this. Since the tension on the winding side is relatively small, the winding bobbin may not necessarily be sufficiently rigid, and the weight and cost can be reduced.
In the wire-type cutting processing apparatus which a cutting wire can reciprocate, pulling a cutting wire from a groove roll group to a wire winding mechanism side at the time of the forward run which sends a cutting wire from a wire pulley mechanism to a said wire winding mechanism via a groove roll group. And a device for driving one of at least either of the two rolls in the direction, and a device for braking one rotation of at least either of the two rolls when traveling in the reverse direction to the forward travel.
In the case where the drive device is a motor, if the motor is always rotated in one direction, the motor acts as a braking device in the reverse travel of the cutting wire, thereby simplifying the configuration.
In the tension adjusting mechanism including two rolls and a wire is caught between the rolls a plurality of times, the structure according to the present invention which can stabilize the running of the wire is characterized in that One of the axes of these rolls is inclined with respect to the other so as to be parallel.
Examples of the tension adjusting mechanism include a dancer mechanism and a capstan mechanism.
According to the present invention, since the wire travels exactly along the groove of the roll, the tension of the wire is stable and high speed operation is possible. In addition, wear of the rolls is reduced, and the life is extended.
The to-be-cut material holding apparatus which can adjust the angle of a to-be-cut material with respect to two directions contains a support body, a 1st rotating body, and a 2nd rotating body, The support body removes a 1st rotating body. Having a portion rotatably supporting about one axis, the first rotating body having a portion rotatably supporting a second rotating body about a second axis perpendicular to the first axis, The second rotating body has a configuration having a portion for supporting the cutting material.
The material to be cut is held by the second rotating body, and the second rotating body is rotatable about the second axis. The first rotating body is rotatable about a first axis perpendicular to the second axis. Therefore, the to-be-cut material can be rotated arbitrary angles about two axes, and the angle can be adjusted to two directions. Moreover, since each rotor is rotatably provided only in one direction, high rigidity can be maintained. In particular, the arrangement is such that the first and second axes are orthogonal to each other, resulting in a rigid structure.
An apparatus according to the present invention for automatically detecting a winding direction of a wire wound on a bobbin includes an accommodating member provided at a distal end of a movable body which is movable in parallel with an axis of a bobbin included in a transverse feed mechanism, and a rewinding bobbin on the accommodating member. A support that is slidably held in the axial direction of the horizontal feed pulley wheel rotatably installed on the support by an axis parallel to the axis of the rewind bobbin, between the receiving member and the support, It is provided with a sensor which detects the axial force of the rewind bobbin which acts on the cutting wire which is unfastened and is caught by the said horizontal feed pulley wheel.
When the wire wound on the bobbin is unwound, the wire unwinded along the winding direction of the wire is oblique, so that the force acts in the axial direction of the bobbin. By sensing the direction of this component, the winding direction of a wire can be detected. Since the winding direction of the wire can be detected automatically, it becomes possible to automate the lateral feed control in unwinding the wire.
The horizontal feed mechanism according to the present invention which can perform stable horizontal feed control on the winding side of the cutting wire includes: a movable body movable in parallel with the axis of the rewind bobbin of the wire; And, including a motor for driving the movement of the movable body, the motor and the servo motor is controlled according to a predetermined horizontal feed speed and the movement amount.
The servo motor can be controlled according to a predetermined horizontal feed movement speed and movement amount. The sensor for detecting the position of the end of the bobbin becomes unnecessary for the control of the transverse direction (direction changeover), and the overrun and the like generated when controlling using this sensor are eliminated. The speed control range is wide, and it is also possible to realize a thin winding pitch.
[First Embodiment]
1 schematically shows the overall configuration of a wire cutting machine (wire saw). The groove roll (or roller) group in this wire type cutting device is enlarged, and the structure of the wire unwinding and the winding mechanism is enlarged in FIG. 2, respectively, and is shown in FIG.
In these drawings, three groove rolls 11, 12, 13 are supported by a frame (not shown in FIGS. 1 and 2) rotatably and parallel to each other. The groove roll 11 is at the position just above the groove roll 12, and the groove roll 13 is at the height position between the groove roll 11 and the groove roll 12, and these groove rolls 11, 12) is located laterally away from.
Grooves are formed on the peripheral surfaces of the groove rolls 11 to 13 at regular intervals, respectively. The spacing of the grooves defines the thickness of the wafer formed by cutting (in FIG. 2, the groove spacing is drawn fairly wide to facilitate the drawing). The wire 14 for cutting is caught by these groove rolls 11-13 in order along these grooves, and is wound by the number of the groove | channels in each groove roll.
The groove roll 11 and the groove roll 12 are arrange | positioned up and down as mentioned above. Therefore, the saw wire 14 runs vertically downwards (or upwards) between the groove roll 11 and the groove roll 12.
The feed device (workpiece feeder 40) of the to-be-cut material is arrange | positioned at the side (left side in FIG. 1 surface) of the top wire 14 which runs vertically between the groove roll 11 and the groove roll 12. FIG. . The transfer device 40 includes a movable body 43 supported to be movable in a horizontal direction along a guide 42 provided on the support 41. The workpiece (cutting material 9) is detachably held by a known holding device at the distal end of the movable body 43.
On the other hand, the ball screw 45 is rotatably held horizontally by the bearing 47 to the support member 46 fixed on the support 41. The ball screw 45 extends into the moving body 43 and is screwed into the ball screw receiving portion 44 provided in the moving body 43. The ball screw 45 may use a toothed belt (chain, timing belt, and other rotational power accurately) by a motor 48 fixed on the support member 46: 49. Driven through rotation.
The ball screw 45 rotates by rotating the motor 48, which causes the movable body 43 to move horizontally along the guide 42. As shown in FIG. The workpiece 9 held by the movable body 43 moves in the horizontal direction and retreats vertically with respect to the top wire 14 running vertically between the groove roll 11 and the groove roll 12. When cutting, the work piece 9 is pressed vertically to the wire 14 running vertically.
It is preferable that the workpiece uses a feed screw, a rack pinion mechanism, a hydraulic or air pressure cylinder, or the like as the above-mentioned feed device 40 as well as using a ball screw.
A nozzle for supplying a processing liquid containing abrasive grains downwardly inclined downward toward a processing location at a location (temporary location) where the top wire 14 contacts the workpiece 9 entering the wire 14. (15) is provided. The nozzle may be disposed at a position below the inclination of the processing place, and the processing liquid may be fed upwardly inclined toward the processing place. As described later, at least one of the groove rolls 11 to 13 is rotationally driven by a motor. As the groove rolls 11 to 13 rotate in the same direction, the top wire 14 extended to the groove rolls 11 to 13 runs in one direction. The workpiece 9 is gradually moved in the horizontal direction toward the wire 14, and the workpiece 9 is pressed against the wire 14 running vertically between the groove roll 11 and the groove roll 12, and The processing liquid containing the abrasive grain is supplied from the nozzle 15 to the processing place where the wire 14 and the work 9 are in contact. As a result, the work 9 is cut into a plurality of wafers of a constant width.
The top wire 14 runs vertically between the groove roll 11 and the groove roll 12. With respect to the top wire 14 running vertically, the work piece 9 moves forward and backward in the horizontal direction. Therefore, compared with the conventional structure which moves the workpiece | work 9 in the up-down direction, the height of a cutting device can be made low. For this reason, since the rigidity may be small compared with the case where the frame is made high, the weight of the frame can be reduced. Moreover, the operation for hand-operation of the top wire 14 (winding the wire 14 to the groove rolls 11 to 13, etc.) and the attachment and detachment of the work piece 9 are facilitated. In addition, since the processing liquid containing abrasive grains flows along the processing surface of the work piece 9, the processing liquid does not get blocked in the groove of the work piece, and further penetrates into the working surface, thereby increasing cutting efficiency.
The unwinding mechanism and the winding mechanism of the top wire 14 are provided on the opposite side to the transfer device 40 of the work piece 9 with the groove rolls 11 to 13 therebetween.
The release mechanism of the top wire 14 includes a rewind bobbin (reel or drum: 50), a release roll 51, and a tension adjustment mechanism 52 which wound the top wire. The rewind bobbin 50 is rotatably held on the frame 8. It is also possible to provide a tension adjusting device to the rewind bobbin 50. The wire 14 released from the bobbin 50 is transferred to the tension adjusting mechanism 52 via the unwinding roll 51.
The tension adjusting mechanism 52 includes two groove rolls 53 and 54 arranged horizontally. The groove roll 53 is rotatably supported by the frame 8. The groove roll (dancer roll 54) is rotatably supported at the distal end of the arm 55. The arm 55 is fixed to the shaft 56 of the tension adjusting device (not shown) at its proximal end. A plurality of grooves are formed in the groove rolls 53 and 54. The top wire 14 is wound several times in its groove between the two groove rolls 53 and the groove rolls 54 via a fixed pulley wheel 57 rotatably installed in the frame 8. To the groove roll 11.
The tension adjusting device includes an angle detector for detecting a rotation angle of the shaft 56, and a driving device (such as an air cylinder) for driving the arm 55 through the shaft 56 so that the arm 55 maintains a substantially horizontal position. Anything is omitted). Receiving a tension signal from a load cell (not shown) that detects the tension of the wire supplied to the groove roll 11, the air cylinder is driven so that the detection tension is almost always equal to the set value, and the arm 55 swings. . If the arm 55 is shaken upwards or downwards by a certain angle, above or below the horizontal posture, it is detected by the angle detector, and in response to this detection, the rewind bobbin 50 so that the arm 55 always remains almost horizontal posture. The driving of is controlled.
The winding mechanism of the top wire 14 also includes a tension adjusting mechanism 72. This tension adjustment mechanism 72 is the same structure as the tension adjustment mechanism 52. The top wire 14 is conveyed from the groove roll 12 to the tension adjusting mechanism 72 via the pulley wheels 77, 78, and 79 for turning rotatably fixed to the frame 8. In the tension adjusting mechanism 72, the wire 14 is wound around the groove roll 73 and the groove roll 74 a plurality of times, and then transferred to the horizontal transfer mechanism 61. The groove roll (dancer roll) 74 is rotatably provided at the tip of the arm 75 fixed to the shaft 76 of the tension adjusting device (not shown). By this tension adjusting mechanism 72, the tension of the top wire 14 released from the groove roll 12 is always kept substantially constant.
The horizontal feed mechanism 61 includes two racks 62 and a rack 66. One rack 62 is fixed horizontally to the frame 8. The other rack 66 is held movable in the longitudinal direction in parallel with the rack 62. The teeth of the rack 62 and the rack 66 face each other.
The pinion 65 is arrange | positioned between these rack 62 and the rack 66, and the tooth of the pinion 65 meshes with the teeth of both racks 62 and 66. As shown in FIG.
An arm 70 is provided at the tip end of the movable rack 66. Pulley wheels 67 are provided at the distal end of the movable rack 66, and pulley wheels 68, 69 are rotatably provided on the arm 70. A concentric pulley wheel 64 is also fixed to the pinion 65. In addition, the pulley wheel 63 is rotatably provided at the front end of the fixed rack 62. The wire 14 is hooked from the tension adjusting mechanism 72 to the pulley wheel 63 of the fixed rack 62 via the rotatable pulley wheel 71 provided on the frame 8 and further includes a pinion 65. ), The wire 14 is hooked to the pulley wheels 67, 68, and 69 of the movable rack 66 folded and folded in the pulley wheel 64. Or drum 60).
The movable rack 66 is reciprocally driven in the longitudinal direction by a reciprocating drive device (cylinder or motor and movement direction switching mechanism, etc.) (not shown). According to the reciprocating drive of the movable rack 66, the pinion 65 and the pulley wheel 64 also move half the moving distance of the movable rack 66. The pulley wheel 69 of the tip end of the movable rack 66 is directly above the winding bobbin 60 and moves in the axial direction of the bobbin 60. Thereby, the top wire 14 is wound up by the winding bobbin 60, aligning. It goes without saying that the winding bobbin 60 is rotated in the winding direction by a rotation drive device (provided with a tension adjusting mechanism if necessary).
Since the unwinding mechanism and the winding mechanism of the top wire 14 are arranged on one side of the groove rolls 11 to 13 at the same time, the length of the entire apparatus is increased in comparison with the case where these mechanisms are arranged on both sides of the groove roll. It can shorten and it contributes to the miniaturization of an apparatus also in this point.
In the above example, the top wire 14 runs in one direction from the releasing mechanism to the winding mechanism via the groove rolls 11 to 13. If necessary, the top wire 14 can be reciprocated. There are at least two methods for reciprocating the top wire.
In the first route, all the wires wound on the wire rewind bobbin are sent from the wire unwinding side to the wire winding side in the road run, and are wound with the wire winding bobbin. Next, the wire winding side is used as the new wire unwinding side, and the wire unwinding side is used as the new wire unwinding side, so that the return travel of the wire is performed. This method has the feature that the cut surface becomes clean since the workpiece can be cut by running in one direction of the wire. The wire releasing mechanism allows a transverse feed mechanism to be installed in order to act as a new wire winding mechanism in return travel.
The second is a length of a little shorter than the predetermined length of the saw wire from the wire unwinding side to the wire winding side for a predetermined length (for example, by 100 m to 200 m), and then from the wire winding side to the wire unwinding side. (Preferably half the length of the predetermined length). Such wire winding and wire rewinding are repeated, and finally, the wire is wound on the wire winding side. This method has the advantage that a relatively short wire can be used substantially long. The horizontal feed mechanism is not necessarily required on the wire unwinding side. This is because, on the wire releasing side, only the wire of the length slightly shorter than the predetermined length is wound around temporarily. If necessary, a bobbin lateral feed mechanism is provided in the wire rewind bobbin on the wire releasing side. The bobbin traverse mechanism winds the wire while moving the entire wire rewind bobbin in its axial direction.
If necessary, a wire cleaning device (see Fig. 1) is disposed between the groove rolls 11 to 13 and the wire unwinding mechanism and the wire winding mechanism. Even when the wire is reciprocated, it is sufficient to arrange the wire cleaning device 7 in one place.
The top wire 14 which runs between the groove roll 11 and the groove roll 12 is not limited to a perpendicular | vertical, and may be inclined somewhat. In view of the inclination of 45 degrees between the vertical and the horizontal (conventional example), the top wire 14 traveling between the groove roll 11 and the groove roll 12 is inclined ± 45 degrees with respect to the vertical. You may be. Similarly, the advancing direction of the work 9 may also be inclined at ± 45 degrees with respect to the horizontal. Although the advancing direction of the work piece 9 is orthogonal to the traveling direction of the top wire, it is preferable that the advancing direction of the work piece 9 is inclined at an angle other than perpendicular to the traveling direction of the top wire by the cutting method. good.
In addition to three groove rolls in which the top wire is extended, two or more groove grooves (groove roll 11 and groove roll 12) may be used.
There are various types of driving methods of the groove rolls 11 to 13. Describe the representative ones.
The first is a one-axis drive, two-axis driven system. One groove roll 13 is rotationally driven by a motor through a speed reducer or other power transmission mechanism (not shown). The other two groove rolls 11 and 12 are rotatably supported by a bearing. By the top wires 14 caught by the three groove rolls 11 to 13, the rotation driving force of the groove roll 13 is transmitted to the other groove rolls 11 and 12.
The second is a synchronous rotation method. A toothed wheel is fixed to each of the shafts of the three groove rolls 11 to 13, and a toothed belt is fastened to these toothed wheels. One groove roll 13 is driven by a motor. The power of the motor is transmitted to the other groove rolls 11 and 12 by belts and toothed wheels. Rotational power is also transmitted by pulleys, belts, gears and chains.
The third is triaxial drive. As shown in Fig. 4, motors 21, 22, and 23 for rotationally driving the three groove rolls 11, 12, and 13, respectively, are provided. These motors 21 to 23 are drive controlled to generate the same torque as described later. The groove roll 11 is rotationally driven by the motor 21 directly or via a suitable rotational power transmission mechanism (not shown). Similarly, the groove rolls 12 and 13 are rotationally driven by the motors 22 and 23, respectively.
5 shows the drive control circuit of the motors 21 to 23.
The three motors 21 to 23 are provided with a feedback control system (feedback control circuit) for controlling the rotational speed constantly. These feedback control systems are given a common target rotation speed (speed target value).
Referring to the feedback control system of the motor 21, a taco generator (rotation speed detector: 33A) for detecting the rotation speed (rotation speed) of the motor 21 is provided. A deviation from the target rotational speed of the detected rotational speed is detected by the subtraction circuit 34A, and a signal indicative of this deviation is given to the speed amplifier 31A. The output of the speed amplifier 31A is converted into a drive current by the current amplifier 32A and flows to the motor 21. Thereby, the motor 21 is controlled so that the rotational speed may correspond to the set target rotational speed.
The feedback control system of the motors 22 and 23 is also basically the same as the feedback control system of the motor 21. Taco generators for detecting the rotational speeds of the motors 22 and 23 are indicated by reference numerals 33B and 33C, respectively. In addition, the subtracting circuits are shown at 34B and 34C, the speed amplifiers are shown at 31C and 31C, and the current amplifiers are shown at 32B and 32C, respectively.
The drive circuit further includes switching circuits 25 and 26. The switching circuit 25 includes a switch SW1b provided between the output side of the speed amplifier 31B and the input side of the current amplifier 32B, and the input side of the speed amplifier 31A and the input side of the current amplifier 32B (switch ( Also in SW1b), it is comprised as the switch SW1a provided between the input sides. The switch SW1a and the switch SW1b are interlocked so that the switch SW1b is off when the switch SW1a is on, and the switch SW1b is on when the switch SW1a is off.
The switching circuit 25 is provided in the feedback control system of the motor 22 and between the feedback control system and the feedback control system of the motor 21, whereas the switching circuit 26 is in the feedback control system of the motor 23 and the same. It is provided between the feedback control system and the feedback control system of the motor 22.
The switching circuit 26 includes two switches SW2a and SW2b which cooperate with each other and take opposite on and off states. The switch SW2a is connected between the input side of the current amplifier 32b and the input side of the current amplifier 32C. The switch SW2b is connected between the output side of the speed amplifier 31C and the input side of the current amplifier 32C.
As shown in FIG. 6, the switching circuit 26 may be provided in the feedback control system of the motor 23 and between the feedback control system and the feedback control system of the motor 21. That is, the switch SW2a of the switching circuit 26 is connected between the output side of the speed amplifier 31A and the input side of the current amplifier 32C. The other structure is the same as that shown in FIG.
These switches SW1a, SW1b, SW2a, SW2b are shown as contact switches, but of course, semiconductor switches can be used.
When the work 9 is cut by the wire 14, the switches SW1a and SW2a are turned on, and the switches SW1b and SW2b are turned off. As a result, the feedback control system of the motor 21 operates, and the feedback control systems of the other motors 22 and 23 are opened. The motor 21 is controlled so that its rotational speed matches the target rotational speed. The torque command (output signal of the speed amplifier 31A) generated in the feedback control system of the motor 21 is given to the current amplifiers 32B and 32C for driving the motors 22 and 23, respectively. Thus, the motors 22 and 23 are driven to generate the same torque as the motor 21.
Each of the groove rolls 11, 12, 13 is rotationally driven by the motors 21, 22, 23 with the same torque. Compared with the first driving method described above, since there is no rotational resistance, there is little slippage between the groove rolls 11 to 13 and the wire 14. This significantly reduces the wear of the grooves of the groove rolls 11 to 13. In addition, the wear degree of the three groove rolls 11 to 13 can be equalized.
The three groove rolls 11 to 13 are driven at a constant torque. If the groove diameter of one groove roll becomes small for some reason, since the torque is constant, the groove roll is accelerated. As a result, even if the groove diameter is small, the circumferential speed of the groove and the traveling speed of the wire are kept almost equal. For this reason, slipping is unlikely to occur. Therefore, compared with the said 2nd drive system, the difference of the diameter of a groove roll can be tolerated.
When the switches SW1a and SW2a are turned off at the same time and the switches SW1b and SW2b are turned on, the feedback control systems of the motors 22 and 23 also operate. This is effective when the three motors 21, 22, 23 are driven separately at the same target rotational speed, respectively. For example, it is used when the wire 14 is wound around the three groove rolls 11 to 13, or when the motors 21 to 23 are idling without the wire.
The fourth is a one-axis drive and two-axis torque variable drive method.
With reference to FIG. 7 and FIG. 8, the motor 20 for rotationally driving the three groove rolls 11, 12, 13 is provided. The groove roll 13 is rotationally driven by the motor 20 either directly or via a suitable rotational power transmission mechanism 35 (shown in FIG. 8 only). The rotational power of the motor 20 is transmitted to the groove rolls 11 and 12 through the power transmission mechanism and the torque controllable couplings 37 and 38, respectively, and these groove rolls 11 and 12 are driven to rotate.
The power transmission mechanism is composed of three geared gears 27, 28 and 29, and a toothed belt 24 hooked to these toothed gears 27, 28 and 29. The geared gear 29 is fixed to the shaft 19 (shown in FIG. 8 only) of the groove roll 13 or the shaft connected to the shaft. The gears 27 and 28 with other teeth are fixed to the rotary shafts (only the rotary shafts 17 corresponding to the groove rolls 12 shown in Fig. 8) provided in correspondence with the groove rolls 11 and 12, respectively.
The toothed gears 27 and 28 which are different from the toothed gears 29 are slightly smaller in diameter, and the toothed gears 27 and 28 are smaller than the toothed gears 29. Rotate a little faster (eg 10% faster).
In addition, the power transmission mechanism can be realized by a combination of a gear, a combination of a pulley and a belt, a combination of a gear and a chain, and the like.
The rotation of these toothed gears 27 and 28 is transmitted via the couplings 37 and 38 to the corresponding groove rolls 11 and 12, respectively.
Representatively, the coupling 38 will be described with reference to FIG. 8. The coupling 38 is for example a powder clutch. The drive shaft of the powder clutch 38 is attached to the shaft 17 of the gear 28 with teeth. The driven side of the powder clutch 38 is provided on the shaft 18 (or the shaft connected to this) of the groove roll 12. The rotational movement force of the shaft 17 is transmitted to the shaft 18 of the groove roll 12 through the powder clutch 38.
The powder clutch 37 has the same configuration, and the rotation of the shaft of the gear 27 with the toothed teeth is transmitted to the shaft of the groove roll 11 through the powder clutch 37.
Rotational resistance occurs in the bearings of the groove rolls 11 and 12 and the like. The transmission torque in the powder clutches 37 and 38 is adjusted so that the rotational torque of the degree which eliminates this rotational resistance is transmitted to the shafts of the groove rolls 11 and 12. That is, the rotational torque of the groove rolls 11 and 12 is almost zero or zero, so that the gears 29, 27 and 28 with the teeth, the belt 24 with the teeth and the powder clutch ( It is transmitted from the motor 20 to the groove rolls 11 and 12 via the 37 and 38.
The groove roll 13 is driven by the motor 20, and the other groove rolls 11, 12 are rotationally driven by the motor 20 via the power transmission mechanism and the powder clutch, respectively. Compared with the first driving method, there is little or little rotational resistance of the groove rolls 11 and 12, so that the groove rolls 11 to 13 and the wire 14 are hardly slipped. This significantly reduces the wear of the grooves of the groove rolls 11 to 13. In addition, the wear degree of the three groove rolls 11 to 13 can be equalized. In addition, even if the groove rolls 11 to 13 have a slight difference in groove diameter or a difference in groove diameter occurs, the groove rolls 11, 13 are adjusted by adjusting the transmission torques in the powder clutches 37 and 38. The rotational resistance of 12) can be zero or almost zero. Therefore, compared with the said 2nd drive system, the difference of the diameter of a groove roll can be tolerated.
Second Embodiment
(1) Placement of Groove Roll
The arrangement of the three groove rolls used in the wire cutting device (wire saw) of the second embodiment is shown in FIG.
The groove rolls 111 and 112 are arrange | positioned so that the relationship of up and down may be maintained. The groove roll 113 is at the same height position as the lower groove roll 112. The groove rolls 111-113 are each arrange | positioned in the position corresponded to the vertex of the right triangle which has a perpendicular and a horizontal side from the side. The top wire 114 runs vertically downward between the groove roll 111 and the groove roll 112, and runs in the horizontal direction at a position between the groove roll 111 and the groove roll 113. FIG.
This arrangement of groove rolls has several advantages. One of them is effective when the groove roll 113 is a driving roll (in the above-described one-axis drive, two-axis driven method, synchronous rotation method, or one-axis drive and two-axis torque variable drive method). As can be seen in FIG. 9, the top wire 114 caught on the driving groove roll 113 forms an acute angle, and the length (or winding) of the top wire 114 in contact with the groove roll 113 (groove). Incidence is large. This means that the rotational driving force of the groove roll 113 is sufficiently transmitted to the top wire 114. In addition, even when the power transmission belt wheel is provided in the shaft of the drive roll 113, and the drive system which transmits rotational force by the belt in the other groove rolls 111 and 112 (it mentions 1 specific example later), a belt The circumferential length in contact with the belt wheel becomes long, and sufficient transmission of the driving force can be achieved.
Second, since the driving roll 113 is disposed at the lower portion, the motor for driving the driving roll 113 can be disposed at the lower portion.
Third, the gap between the groove roll 112 and the groove roll 113 can be used. The workpiece 109 is cut by the top wire 114 running vertically. As the cutting proceeds, the workpiece 109 enters into a right triangle formed by three groove rolls 111 to 113. When the workpiece 109 is cut, cutting chips are generated, which fall downward. Since the grooved roll 112 and the grooved roll 113 which are located in the lower part are arrange | positioned at the substantially same height position at intervals, the cutting debris accommodating part ( To be described later), and cutting chips can be easily removed.
This structure becomes more effective by uniting three groove rolls and setting it as the structure which can be detachably attached to the base of a wire type cutting apparatus.
(2) Overall composition
Fig. 10 schematically shows a part of the overall arrangement and the control system of the wire type cutting apparatus according to the second embodiment.
The workpiece 109 is held at the distal end of the workpiece feeder 170 and moves forward and backward with respect to the top wire 114 traveling between the groove roll 111 and the groove roll 112 in a straight weave.
The top wire 114 wound around the rewind bobbin 540 includes the unwinding side horizontal feed mechanism 400, the pulley wheel 380, the side portion 370, the unwinding side dancer mechanism 350, and the pulley wheels 471, 472. It is supplied to the groove roll 111 of the upper part of a groove roll group via (these comprise a loosening mechanism of a top wire).
The top wire 114 is hung in order between the three groove rolls 111 to 113 by the number of the grooves. The groove roll 113 is driven by the drive motor 149. The top wire 114 is withdrawn from the groove roll 113, and is conveyed to a winding mechanism. The winding mechanism is a pulley wheel 473, other turning wheels, a pulley wheel 474, a capstan mechanism 300, a winding side dancer mechanism 320, a pulley wheel 340, 475, and a winding side traverse mechanism 500. ) And cold bobbin 550.
The tension of the top wire 114 supplied to the groove roll group is controlled by the unwinding side dancer mechanism 350 to be almost constant (set value) at all times. The tension of the wire 114 on the inlet side of the groove roll group is detected by the tension detection device 481 including the load cell provided on the support member of the pulley wheel 472. On the other hand, the release side dancer mechanism 350 includes a fixed roll 351 and a dancer roll 352, and the wire 114 is caught between these rolls 351 and 352 a plurality of times. The dancer roll 352 is supported by the arm, and the swing of the arm is controlled by the air cylinder. In the tension control device 483, the detection tension of the tension detection device 481 is compared with the set value, and an instruction according to the deviation is given to the idle conversion device 484. The idle converter 484 controls the air pressure applied to the air cylinder. As a result, the height position of the dancer roll 352 is adjusted so that the deviation between the detection tension and the set value approaches zero. The detailed structure of the release side dancer mechanism 350 is mentioned later.
The height position of the dancer roll 352 is detected by the synchro generator 365. This detection output is given to the dancer control device 485. The dancer controller 485 controls a motor (servo motor: 492) for rotating the rewind bobbin 500. That is, the amount of loosening of the wire from the bobbin 540 is adjusted so that the height position of the dancer roll 352 is always kept substantially constant.
The side part 370 includes two pulley wheels 371 and 372 rotatably installed, and the pull wires 114 are caught by their pulley wheels 371 and 372. The rotation amount of one pulley wheel 371 is detected, and the amount of loosening (supply amount) of the top wire 114 is calculated according to this rotation amount. The detailed structure of the length measurement part 370 is also mentioned later.
At the attachment portion of the pulley wheel 428 included in the unwinding side horizontal transfer mechanism 400, a winding direction detecting device 440 of the wire 114 released from the rewind bobbin 540 is provided, and the detecting device 440 is It contains two load cells. According to the detected winding direction, the moving direction of the wire by the horizontal feed mechanism 400 is controlled. That is, the rotation direction of the drive motor 430 of the release side horizontal transfer mechanism 400 is controlled by the horizontal transfer control device 491. The detailed structure of the winding direction detecting device 440 and the horizontal feed movement direction control will also be described later.
The tension of the top wire 114 drawn out from the groove roll group is controlled by the capstan mechanism 300 to always be almost constant (set value). The tension of the wire 114 on the outlet side of the groove roll group and the tension of the wire 114 on the inlet side are controlled to be generally the same.
The tension of the wire 114 on the outlet side of the groove roll group is detected by the tension detecting device 482 including a load cell provided on the support member of the pulley wheel 473. On the other hand, the capstan mechanism 300 includes two rotatably mounted fixing rolls 301 and 302. The wire 114 is caught by these rolls 301 and 302 several times. Rotation of one roll 301 is controlled by the motor 310. In the tension controller 489, the tension detected by the load cell and the set value (this set value is set to the same value as the set value of the tension controller 483) are compared, and the deviation is zero depending on the deviation. The motor 310 is controlled to move closer. Details of the capstan mechanism 300 will also be described later.
The capstan mechanism 300 is characterized by separating the tension on the inlet side and the tension on the outlet side. The tension of the inlet side (outlet side of the groove roll group) of the capstan mechanism 300 is set to a value suitable for driving (cutting of the workpiece) of the groove roll group as described above. On the other hand, the tension of the wire 114 wound around the winding bobbin 500 is preferably smaller than the tension in the groove roll group. Therefore, the tension on the outlet side (cold bobbin 500 side) of the capstan mechanism 300 is set lower than the tension on the inlet side.
The tension of the wire 114 wound around the winding bobbin 500 is controlled by the winding side dancer mechanism 320. The structure of this dancer mechanism 320 is basically the same as that of the release side dancer mechanism 350, and is provided with the fixing roll 321 and the dancer roll 322. As shown in FIG. The tension detected by the tension detection device 343 including a load cell installed on the support member of the pulley wheel 340 is given to the tension control device 486. The tension controller 486 controls the idle converter 487 so that the deviation between the detected tension and the set tension (which is smaller than the set values of the tension controllers 483 and 489) is close to zero. Through the dancer roll 322 is up and down operation. The detailed structure of the release side dancer mechanism 320 is also mentioned later.
The height position of the dancer roll 322 is detected by the synchro generator 335. According to this detection height position, the winding drive motor 494 is controlled by the dancer control device 488, so that the winding amount of the wire is adjusted so that the height of the dancer roll 322 is always kept substantially constant.
The horizontal feed motor 530 of the winding side horizontal feed mechanism 500 is controlled by the horizontal feed control device 493. The structure of the horizontal feed mechanism 500 and the detail of horizontal feed control are also mentioned later.
As described in the first embodiment, the travel control method of the top wire 114 includes one direction travel and reciprocating travel. There are two types of round trips. In this embodiment, the wire is run from the unwinding side to the winding side at an appropriate length (for example, 100 m to 200 m) (this is called a forward run), and then rewinds the length of half of the length in the reverse direction (this is the reverse direction). A method of repeating this reciprocation (for convenience, referred to as intermittent reciprocation) is used. The wire 114 is used to cut the work piece 109 equally three times (net, reverse, net) in any part.
In the intermittent reciprocation control of the top wire 114, the drive motors 492 and 494 of the rewind bobbin 540 and the winding bobbin 550 are similarly ordered according to the forward and reverse driving of the drive motor 149 of the roll group. Needless to say, driving in reverse direction.
The tension control devices 483, 486, 489, the dancer control devices 485, 488, and the horizontal feed control devices 491, 493 described above can be realized by one or a plurality of computers or controllers. This computer or controller also performs intermittent reciprocation control of the top wire 114.
The top wire is a steel wire, and the following ranges can be used.
Carbon content 0.72C% -1.02C%
If the amount of carbon (wt%) is less than 0.72C%, the tensile strength is insufficient, and if it exceeds 1.02C%, it becomes soft. You may contain a trace amount of chromium.
2. Linear diameter 0.010mm-0.300mm
If the linear diameter is less than 0.010, the lack of strength occurs. If the linear diameter exceeds 0.300 mm, the loss of the workpiece (wafer) becomes excessively large.
3. Knitting diameter difference 0.0005mm-0.0100mm
Knitting diameter difference 0.0005mm is a limit of manufacturing precision, and when it exceeds 0.0100mm, the surface precision of the wafer formed by cutting will become a defect easily.
4. Plating (Brass Plating)
0.50% -0.70%
Zinc 0.30% -0.50%
0.01% -0.05% other
Plating Thickness 0.0001mm-0.01000mm
The surface plating of the saw wire helps to bring the abrasive particles (diamonds) to the cut surface (cutting place). As the surface plating of the top wire, not only brass plating but also copper plating, zinc plating and nickel plating may be used.
5. The tensile strength 2800N / mm ² -4800N / mm ²
Since the disconnection of the wire is fatal, this degree of tension is required.
Standard specifications are as follows.
1. Carbon amount 0.82C%
2. Linear diameter 0.180mm
3. Knitting diameter difference 0.002mm
4. Plating (Brass Plating)
0.63%
Zinc 0.35%
Other 0.02%
Thickness 0.0020mm
5. Tensile Strength 3200N / mm ²
(3) Groove roll unit and its drive system
11-15 show a groove roll unit and its drive system.
The frame 121 is provided on the base 120 of the wire type cutting machine. The partition 121 is divided into three rooms by the partition 122 and the partition 123. The largest room is the cutting chamber 125, which is covered by a removable cover 124. The groove roll unit is disposed in the cutting chamber 125.
The groove roll unit includes one frame 130. The frame 130 is provided with three pairs of bearings 134 for rotatably supporting the axes of the groove rolls 111 to 113 at both ends thereof. As shown in FIG. 9, the groove rolls 111-113 are supported by the bearing 134 in the position corresponded to the nearly vertex of a right triangle.
In the frame 130, except for one surface into which the work 109 enters, under the upper groove roll 111, an inclined surface facing the one surface, a lower surface of the lower groove roll 113, a bottom surface of the frame 130, and The cover 139 is provided up to the lower groove roll 112. The part of the bottom face of this cover 139 becomes cutting crumb accommodating part 139a. Both sides of the frame 130 are also covered with a plate-like body. The extraction port 130A is opened in the lower part of one side surface. The processing liquid containing the abrasive grains used when cutting the workpiece 109 and the cutting chips generated by the cutting are prevented from scattering to the surroundings by the cover 139 and the side plates, and further fall downward. Is supported by the cutting debris receiving portion 139a. Cutting debris and the like on the cutting debris receiving portion (139a) is extracted to the outside from the extraction port (130A). Thus, between the two lower rolls 112 and 113, the cutting chip accommodating portion 139a can be provided.
The wire guide 128 is provided in the tip part located below the upper groove roll 11 of the cover 139, and the tip part located above the lower groove roll 112 of the cover 139. As shown in FIG. The wire guide 128 extends over the entire width (length) of the groove rolls 111 and 112, and is almost in contact with the top wire 114 running vertically between the two groove rolls 111 and 112, or It is provided to such an extent that it protrudes toward the outside of the frame rather than the traveling position of the wire 114. In the process of cutting the workpiece 109 by pressing the workpiece 109 against the running saw wire 114, the saw wire 114 is slightly bent toward the inside of the frame (see especially FIG. 16). The wire guide 128 is formed with a groove through which the top wire 104 passes through at the position where the top wire 104 travels. Alternatively, a portion of the wire guide 128 itself is cut by the running top wire 104 to form a groove. The wire guide 128 is preferably made of nonmetal, such as nylon and plastic.
There are several roles of the wire guide 128. One of them is to prevent or accumulate vibration of the top wire 114 running vertically. Thereby, the cutting precision by the top wire 114 can be improved. The second is to prevent the processing liquid and the cutting chips containing abrasive particles from adhering to the groove rolls 111 and 112. As a result, the life of the groove roll is extended.
Under the upper wire guide 128 and above the lower wire guide 128 (preferably as close as possible to the movement path of the work piece 109), the groove roll 111 and the groove roll ( At a position outside the travel path of the top wire 114 running vertically between the 112, a nozzle 129 for injecting a processing liquid containing abrasive particles toward the running top wire 114 is provided. It is fixed to the frame 130. The upper nozzle 129 is for forward travel of the top wire 114, the lower nozzle 129 is for reverse travel of the top wire 114. The nozzle 129 includes an injection hole formed over at least the width at which the top wire 114 travels, and uniformly supplies the processing liquid to the top wire 114. The processing liquid supplied to the saw wire 114 is conveyed to the cutting place of the workpiece 109 as the saw wire 114 travels.
The shafts (only shown by reference numerals 131 and 133) of the groove rolls 111 to 113 protrude outward from the frame 130 at one end of the drive side. In the place of the bearing 134 of the frame 130, the sealing member 138 which consists of an annular elastic body (for example, rubber | gum) is enclosed so that these may surround the periphery of the axis | shaft 131,133 which protruded. It is fixed at. As for the sealing member 138, the front-end | tip part spreads toward the outer side. A shield plate 127 is provided in the partition wall 123, and holes are formed in the shield plate 127 through which the shafts 131 and 133 pass. The sealing member 138 is in close contact with the periphery of the hole of the shielding plate 127. In the cutting chamber 125, a processing liquid containing abrasive particles is applied to the cutting wire 114 and the work piece 109, or cutting chips may be generated. The sealing member 138 prevents these processing liquids and cutting chips from entering the room on the driving side from the cutting chamber 125.
In the surface on the opposite side to the driving side, the frame 130 is provided with a portion to be grabbed at a position corresponding to each bearing 134. The frame 130 supporting the groove rolls 111 to 113 is fixed to the base 120 by bolt nuts (represented only by the chain lines 137) in the cutting chamber 125. By removing the bolt nut 137, the frame 130 can be removed from the base 120 and taken out of the wire cutting device. In the detachable operation of the frame 130, a portion to be grasped when the frame 130 is moved or positioned is used.
Since the frame 130 including the groove rolls 111 to 113 can be taken out to a wide place outside of the wire-cutting device, work such as maintenance of the surface grooves of the groove rolls 111 to 113 at this wide place. Can be done. Easy to maintain
The drive mounting plate 126 is fixed to the other partition wall 122 of the frame 121. Three bearings 144 are fixed to the attachment plate 126 at positions corresponding to the groove rolls 111 to 113, and shafts (shown only with reference numerals 141 and 143) are rotatable to these bearings 144, respectively. Is supported. These shafts 141 and 143 and the shafts 131 and 133 of the groove rolls 111 to 113 are engaged by the gear coupling 136.
Two grooved belt wheels 153 and 156 are fixed to the drive side 143 coupled to the shaft 133 of the groove roll 113. On the other hand, the drive motor 149 is fixed to the base 120, and the grooved belt wheel 158 is fixed to the output shaft. The home belt 157 is caught by the belt wheels 156 and 158, and the rotational driving force of the motor 149 is transmitted to the shaft 143. As a result, the groove roll 113 is driven to rotate.
On the other hand, the grooved belt wheel is coupled to the shafts of the other two groove rolls 111 and 112, and the shaft 141 supported by the bearing 144 (hereinafter, a drive system corresponding to the groove roll 111 will be described below) is described. 151 is rotatably supported. This belt wheel 151 forms part of the powder clutch 160.
The powder clutch 160 includes an annular electromagnet (including excitation coils) 164 fixed to the attachment plate 126 by the bracket 165. A driven side rotating body 163 made of a thin metal plate is provided to surround the electromagnet system 164, and the rotating body 163 is fixed to the shaft 141. On the outer side of this rotating body 163, there is a driving side rotating body 162, and the rotating body 162 is fixed to the belt wheel 151. As shown in FIG. On the outer circumferential surface of the rotating body 162, a plurality of pins 166 are provided.
The tension pulley 155 is further rotatably installed on the attachment plate 126. The groove belt 154 is caught by the belt wheels 151 and 152 (corresponding to the groove roll 122) and the tension pulley 155. The rotational driving force of the drive shaft 143 is transmitted to the groove rolls 111 and 112 through the belt 154, the belt wheels 151 and 152, the powder clutch 160, and the shaft 141.
There are various main methods of using the powder clutch 160. One of them is that, as described in the first embodiment, the rotational resistance of the groove rolls 111 and 112 is set to zero or almost zero by adjusting the transmission torque. Second, at the time of acceleration / deceleration, the inertia influence which the groove rolls 111 and 112 give to the top wire 114 is reduced. The top wire 114 is driven in an intermittent reciprocating manner. When the driving direction is reversely rotated, it first decelerates, pauses, and then accelerates. Groove rolls are heavy and have large inertia. If the transmission torque of the powder clutch 160 is set to an appropriate value, the influence of the inertia of the groove roll on the top wire 114 can be reduced. The transmission torque by the powder clutch 160 can be adjusted in advance to match a slight difference in the diameter of the groove roll, and may be controlled to increase the transmission torque when acceleration / deceleration and reduce the transmission torque in the normal state. For this purpose, the diameters of the belt wheels 151, 152 and 153 corresponding to the groove rolls 111, 112 and 113, respectively, may be the same. In either case, in general, the feedback rotation control is performed so that the motor 149 of the drive groove roll 111 becomes the target rotational speed.
Drive systems such as the belt wheels 151 to 153 and 156, the bearing 144, the powder clutch 160, and the like are provided on the attachment plate 126. Therefore, it is also possible to replace the whole attachment plate 126.
It is preferable to change the space | interval of the groove rolls 111-113 according to the magnitude | size (diameter) of the workpiece | work 109. In the case of the large-diameter workpiece 109, it is necessary to widen the space | interval of the groove rolls 111-113. According to this, the drive system also needs to be changed.
A plurality of groove roll units having a size corresponding to the size of the work 109 are prepared in advance. Similarly, plural types of drive systems (attachment plate 126) are also prepared in advance. According to this, if the groove roll unit and the drive system suitable for the size of the work piece 109 are adopted, and these are provided on the base, the wire type cutting device according to the size of the work piece 109 can be manufactured easily.
(4) Work piece feeder and work holding device
16 and 17 show the configuration of the workpiece conveying apparatus.
The workpiece conveyance apparatus 170 is equipped with the moving body 171. On the lower surface of this moving body 171, two rails 174 are provided in parallel along the longitudinal direction. On the other hand, the slide mechanism 173 is provided in the upper surface (moving body support surface) of the support base 172 fixed by the bolt on the base 120, and the rail 174 is slidably supported. Thereby, the movable body 171 is supported by the support stand 172 so that a movement is possible. The work holding device 190 is provided at the front end of the moving body 171. The detailed structure of the workpiece holding apparatus 190 is mentioned later.
Below the movable body support surface of the support base 172, the screw shaft 177 is rotatably supported by the bearings 178 and 179 provided in the support base 172. As shown in FIG. The screw shaft 177 extends in the moving direction of the moving body 171 and is provided horizontally. A nut 176 is screwed into the screw shaft 177, and the nut 176 is rotatably supported by the attachment member 175. The attachment member 175 is fixed to the lower surface of the movable body 171. The groove 180 through which the attachment member 175 passes is formed along the moving direction of the movable body on the movable body supporting surface of the support 172.
The rear end of the screw shaft 177 protrudes from the bearing 179 to the rear of the support 172, and a belt wheel 184 is provided at the rear end thereof. On the other hand, the drive motor 183 is fixed to the support stand 172 by a bracket. The belt wheel 181 is provided in the shaft of the drive motor 183. The belt 182 is caught by the two belt wheels 181, 184.
The rotation of the motor 183 is transmitted to the screw shaft 177 through the belt wheel 181, the belt 182, and the belt wheel 184, and the screw shaft 177 rotates. Since the nut 176 moves along the screw shaft 177, the movable body 171 moves forward and backward.
The front part of the moving body 171 protrudes toward the groove roll unit from the window opened in the partition 188. The shielding plate 185 is provided so as to surround this protruding front portion of the movable body 171. A circular shield plate 187 is also provided at the front end of the moving body 171, and a corrugation box 186 is provided between the two shield plates 185 and 187.
The linear encoder (not shown) which measures the movement amount or position of the moving body 171 is provided. The drive motor 183 is controlled with reference to the feedback signal from the linear encoder so that the feed rate of the workpiece 109 coincides with the set value.
18 to 28 show details of the workpiece holding apparatus 190. This work holding device 190 is particularly effective when the work is required to fine-tune single crystal silicon and other cutting directions. Since the single crystal silicon rod has a crystal direction, it is necessary to determine its cutting direction in relation to the crystal orientation (for example, in a direction inclined at a gonio angle (lateral angle) with respect to the crystal axis). The workpiece holding apparatus 190 rotates the held workpiece about an axis (represented by reference numeral M1 in FIG. 19) in the advancing direction (horizontal direction) of the workpiece, and furthermore, on this rotation center axis M1. By rotating about an orthogonal perpendicular axis (represented by the symbol M2), it is possible to finely adjust the direction of the workpiece in two directions.
The support 191 is fixed to the front end surface of the moving body 171 of the workpiece feeder 170 by a bolt. The support 191 has a cylindrical portion 192 and a flange portion 193 integrally formed at one end of the cylindrical portion 192. The inner circumferential surface 194 of the cylindrical portion 192 serves as a bearing or rotation guide that receives and rotatably supports the first rotating body 200 described below. The inner periphery surface 194 is circular around the center of rotation axis M1.
The first rotating body 200 itself rotates about the center of rotation axis M1 and rotatably supports the second rotating body 210 to be described later, and has a somewhat complicated shape. . That is, the first rotational body 200 is continuously connected to the cylindrical shaft portion 201 and the cylindrical shaft portion 201 rotatably and accurately inserted into the inner circumferential surface 194 of the cylindrical portion 192 of the support 191. And a support portion 202 rotatably supporting the second rotor 210 and a flange portion 203 protruding outward at a position between these shaft portions 201 and the support portion 202. . The support part 202 has two support pieces 202a up and down, and the circular hole 204 which receives the 2nd rotating body 210 is opened in these support pieces 202a. The inner circumferential surface of the hole 204 functions as a bearing or a rotation guide that rotatably supports the second rotating body 210. The center of this circular hole 204 is the rotation center axis M2. The center of rotation axes M1 and M2 are orthogonal at positions between the two support pieces 202a.
The shaft portion 201 of the first rotating body 200 is fitted into the cylindrical portion 192 of the support 191, so that the first rotating body 200 is rotatable about the rotation center axis M1. Supported. The flange portion 203 of the first rotating body 200 is in contact with the flange portion 193 of the support 191. A plurality of long holes 205 are opened in the flange portion 203 of the first rotating body 200 at equiangular intervals. The fixing bolt 206 is screwed into the flange portion 193 of the support 191 through the washer through the long hole 205. When the bolt 206 is tightened severely, the first rotating body 200 is fixed to the support 191. When the bolt 206 is loosened, the first rotating body 200 becomes rotatable within the range of the long direction of the long hole 205. The mechanism which just rotates the 1st rotating body 200 little by little is mentioned later.
The second rotating body 210 is composed of two rotating body portions 211 and 212, which are coupled by the work holding member 220. The two rotor parts 211 and 212 are the same type except that the long hole 217 is opened in one rotor part 211. As for one of the rotating body portions 211, the rotating body portion 211 is composed of a cylindrical shaft portion 213 and a flange portion 214 formed at one end of the shaft portion 213. The shaft portion 213 is firmly but rotatably fitted in the circular hole 204 of the support piece 202a on the upper portion of the first rotating body 200. Similarly, the other rotating body portion 212 is composed of a shaft portion 215 and a flange portion 216, the shaft portion 215 is a circular hole of the support piece 202a in the lower portion of the first rotating body 200 204 is fitted with a rotational free material.
The workpiece holding member 220 is composed of a connecting portion 221 of a substantially cylindrical shape (thickness varies depending on the place) and a holding portion 222 that is long in the horizontal direction. The connecting portion 221 is located between the two rotor parts 211 and 212. The two rotor parts 211 and 212 are fixed to the connection part 221 of the workpiece holding member 220 by bolts. The flange portions 214, 216 of the rotating body portions 211, 212 are in contact with the upper and lower surfaces of the support piece 202a of the first rotating body 200, respectively. In this way, the two rotating body portions 211 and 212 are integrated and rotatably supported by the first rotating body 200.
A plurality of long holes 217 are opened in the flange portion 214 of the upper rotating body portion 211 at equiangular intervals. The fixing bolt 218 is screwed into the support piece 202a of the first rotating body 200 through the long hole 217 through the washer. By tightening the bolt 218, the second rotating body 210 is fixed to the first rotating body 200. When the bolt 218 is loosened, the second rotating body 210 is free to rotate around the rotation center axis M2. The mechanism for gradually rotating the second rotating body 210 will be described later.
The mechanism 240 which rotates the 1st rotating body 200 is demonstrated. Since the arm 241 is fixed to the support 191 and the arm 241 extends in the horizontal direction to the outside, the transfer nut 242 is rotatably held at the distal end of the arm 241. have. A screw 243 is fitted to this nut 242. On the other hand, the mounting piece 244 is fixed to the peripheral side surface of the flange part 203 of the 1st rotating body 200. As shown in FIG. The ends where the screws are not fitted to the nut 242 of the screw 243, and both ends of the mounting piece 244 and the link 245 are pivotally attached, respectively. Holes 246 into which rotation aids such as wrenches are inserted are opened at several places on the circumferential surface of the nut 242.
When the fixing bolt 206 is loosened and the wrench is inserted into the hole 246 to turn the nut 242, the screw 243 advances and retreats in the nut 242 along the direction in which the nut 242 is turned. Since the forward and backward movement of the screw 243 is transmitted to the flange 203 of the first rotating body 200 through the link 245 and the mounting piece 244, the first rotating body 200 is the central axis of rotation. It rotates about M1. When the bolt 206 is tightened when the first rotor 200 reaches the desired angle position, the first rotor 200 is fixed at the angle position. On the outer circumferential surface of the flange portion 193 of the support 191, the scale plate 247 is fixed (or engraved on the scale), and on the scale 247 of the outer circumferential surface of the flange portion 203 of the first rotating body 200. The indicator 248 is engraved or recorded at the corresponding position. By these scales 247 and the indicator 248, the rotation angle or angle position of the 1st rotating body 200 can be known.
The mechanism 250 which rotates the 2nd rotating body 210 is demonstrated. The flange 251 is provided in the side part of the upper and lower support pieces 202a of the 1st rotating body 200 so that it may protrude outward. In these upper and lower flanges 251, a vertical attachment member 252 is installed at a position between them so as to be rotatable about a vertical axis by a bolt 253 which is rotatably passing through the flange 251. It is becoming. A hole 254 is opened at the center of the attachment member 252. The rotation operation rod 255 is rotatably communicating with this hole 254. The rod 255 cannot advance into or out of the hole 254. A handle 256 is provided at one end of the rod 255, and the other end is made of a screw 255a. The workpiece holding member 220 is also provided with upper and lower flanges 257, and these flanges 257 have bolts through which the vertical members 258 rotatably run through the flanges 257 at positions between them. Reference numeral 259 is provided to be rotatable about the vertical axis. A nut is formed in this member 258, and the screw 255a of the rod 255 is screwed in this nut.
When the handle 256 is rotated while the fixing bolt 218 is loosened, the screw 255a of the rod 255 advances and retreats in the nut of the member 258. Thereby, the 2nd rotating body 210 integrated with the workpiece holding member 220 rotates around the rotation center axis | shaft M2. When the bolt 218 is tightened when the second rotor 210 reaches the desired angle position, the second rotor 210 is fixed at the angle position. If the scale plate 260 is provided in the workpiece holding member 220 (or the second rotating body 210), and the indicator 261 is provided in the position corresponding to that of the 1st rotating body 200, respectively, The rotation angle or angle position of the second rotating body 210 can be known.
The workpiece mounting base 270 is detachably attached to the workpiece holding member 220 by the dovetail difference structure. A dovetail 223 is formed in the holding portion 222 of the work holding member 220 to extend in the vertical direction. On the other hand, the dovetail groove 271 is formed in the workpiece mounting stand 270. The dovetail groove 271 is fitted into the dovetail 223, the work mount 270 is installed in the holding portion 222 of the work holding member 220. A stopper 272 is fixed to the lower end surface of the holding portion 222 of the work holding member 220 by a bolt. The workpiece mount 270 is supported by this stopper 272.
In the holding part 222 of the workpiece holding member 220, a window 224 is opened at this side on one side of the dovetail 223. The hole 225 is opened from the end face of the holding part 222 to connect with this window 224.
The fastening piece 280 is contained in the window 224. The tightening piece 280 has a dovetail 281 corresponding to the dovetail 223. In addition, a screw hole 282 is formed in the tightening piece 280. The shaft 286 of the handle 285 rotatably communicates with the hole 225 of the holding portion 222 of the work holding member 220. A male screw is formed at the distal end of the shaft 286, and the male screw is fitted into the screw hole 282 of the tightening piece 280. The pressing spring 287 is wound on the shaft 286 of the handle 285 between the tightening piece 280 and the side of the window 224, and the tightening piece 280 is pressed against the handle 285 in the opposite direction. It is.
By turning the handle 285 and twisting the shaft 286 into the screw hole 282 of the tightening piece 280, the tightening piece 280 moves in the direction of the handle 285, and the dovetail 281. ) Strongly contacts the dovetail groove 271 of the work mount 270, and the work mount 270 is firmly fixed to the work holding member 220.
The workpiece 109 is attached to the workpiece mounting base 270 by a mounting piece 273 by adhesion or the like.
In the workpiece holding apparatus 190, as described above, the first rotating body 200 is rotatably installed about the horizontal axis M1 on the support 191 fixed to the moving body 171, and The second rotating body 210 is rotatably supported about the vertical axis M2 by the first rotating body 200. Moreover, the horizontal rotating shaft M1 and the vertical rotating shaft M2 are perpendicular to each other. The workpiece holding member 220 is fixed to the second rotating body 210. Therefore, the orientation of the workpiece 109 can be finely adjusted in two directions, and at the same time, the rigidity of the workpiece 109 can be maintained firmly.
(5) capstan mechanism and dancer mechanism
29 to 35 show the capstan mechanism 300, the winding-side dancer mechanism 320, and the pulley wheel 34 included in the winding mechanism of the top wire.
First, the winding side dancer mechanism 320 will be described. As described above, the dancer mechanism 320 includes a fixing roll 321 and a dancer roll 322.
The fixed roll 321 is composed of a plurality of pulley wheels rotatably installed on the support shaft 323. The support shaft 323 is vertically fixed to the vertical support wall 290.
The dancer roll 322 is provided at the tip of the arm 324. The dancer roll 322 is also composed of a plurality of pulley wheels rotatably installed on the support shaft 325. The support shaft 325 is fixed to the arm 324 as viewed from above with respect to the horizontal and vertical support wall 290.
As described above, the top wire 114 is fixed from the V groove (pulle wheel) of the fixing roll 321 from the V groove (pulle wheel) of the dancer roll 322 and the groove of the dancer roll 322. Like the groove of the slit), the fixed roll 321 and the dancer roll 322 are sequentially reciprocated. Since the support shaft 325 of the dancer roll 322 is oblique with respect to the support shaft 323 of the fixed roll 321, the top wire 114 has these rolls ( It is hung so that each top wire 114 runs vertically and parallel to each other so as to follow each groove of 321 and 322 accurately (as viewed from the side).
By this structure, the top wire 114 runs stably along the grooves (V grooves) of the rolls 321 and 322. In addition, the tension of the top wire 114 is stabilized to enable high speed operation. In addition, wear of the rolls 321 and 322 is reduced, and the life thereof is extended.
The base end of the arm 324 is fixed to the rotation shaft 326. The support wall 290 is provided with the support cylinder 327 upright, and the rotation shaft 326 passes through the support cylinder 327 and is rotatably supported by the bearing 328 provided in the support cylinder 327. ought. The rotating shaft 326 protrudes to the back surface of the support wall 290.
On the back surface of the support wall 290, an air cylinder 330 is rotatably provided by the shaft 331 at its base end. One end of the link 332 is fixed to the rotation shaft 326 protruding to the back surface of the support wall 290. The other end of the link 332 and the tip of the piston rod 330a of the air cylinder 330 are rotatably connected by the joint 333.
Therefore, by driving the air cylinder 330 and advancing the piston 330a, the arm 324 swings about the rotation shaft 326, and the height of the dancer roll 322 changes. As described above, the air cylinder 330 is controlled by the resonant converter 487 so that the detection tension of the tension detecting device 343 including the load cell is equal to the set value.
By adjusting the height of the dancer roll 322 by such an air cylinder 330, even if the set tension is arbitrarily changed, the tension on the winding side can be controlled in accordance with this, and the tension is continuously (stepless). It is possible to change. The setting tension can be changed even while the top wire is running. In addition, even if the position of the dancer roll changes, the inertia of the rod of the air cylinder is extremely small and the tension fluctuation is small.
The arrangement of the air cylinder 330 may be inclined or horizontal, as well as a position nearly close to vertical as shown. In place of the air cylinder, the arm 324 can be continuously oscillated by using a servo motor and a reduction mechanism.
The back side of the support wall 290 is provided with a synchro transmitter 335 through an attachment member 334. The shaft of the synchro generator 335 is coupled to the rotation shaft 326 by a coupling 336. As a result, the rotation angle of the rotation shaft 326, that is, the swing angle of the arm 324, or the height of the dancer roll 322 is detected by the synchro generator 335. The detection signal of the synchro generator 335 is used for rotation amount control (winding amount control) of the winding bobbin 550 as described above, and the height of the dancer roll 322 is always kept substantially constant.
The capstan mechanism 300 includes two fixed rolls 301 and 302. The upper fixing roll 301 is fixedly installed on the rotation shaft 303. The support cylinder 304 is erected and installed on the support wall 290. The rotating shaft 303 passes through this support cylinder 304, and the rotation shaft 303 is rotatably supported by the bearing 305 provided in the support cylinder 304. The belt wheel 306 is fixed to the part which protruded on the back surface of the support wall 290 of the rotating shaft 303. As shown in FIG. The axis of rotation 303 is perpendicular to the support wall 290.
The lower fixing roll 302 is also fixed to the rotation shaft 307. The rotating shaft 307 is rotatably supported by the bearing 309 by the support cylinder 308 provided in the support wall 290. The axis of rotation 307 is also inclined horizontally with respect to the support wall 290.
A plurality of V grooves are formed in these two fixed rolls 301 and 302, and the top wire 114 is caught between the two rolls 301 and 302 in order in these V grooves. Also in the capstan mechanism 300, since the lower fixing roll 302 is provided at an angle, the top wire 114 runs in parallel with the wall surface of the support wall 290, and exactly in the V grooves of the rolls 301 and 302. Follow. As a result, the running of the top wire 114 is stabilized.
The servo motor 310 is installed at the rear side of the support wall 290 through the attachment member 311. The belt wheel 312 is fixed to the shaft of this motor 310. The belt 313 is caught between two belt wheels 306 and 312. The upper fixed roll 301 is driven by the motor 310. As described above, the driving of the motor 310 is controlled so that the detection tension by the tension detecting device 482 including the load cell is equal to the set value, so that the tension at the exit side of the home roll group is almost always maintained. do.
That is, in the intermittent reciprocation of the top wire 114, the motor 310 rotates in the direction (forward direction) to pull the top wire 114 traveling in the forward direction. As a result, the tension on the outlet side of the groove roll group is increased, and the tension on the winding bobbin 550 side is reduced. The motor 310 continues to rotate in the forward direction similarly in the reverse travel of the top wire 114. Thereby, the motor 310 acts as a brake, the tension on the groove roll group side is large, and the tension on the winding bobbin 550 side is kept small. Since the tension of the top wire 114 wound around the winding bobbin 550 (forward traveling) or released from the winding bobbin 550 is kept relatively small, it is not necessary to prepare an extremely rigid one as the winding bobbin 550. This makes it possible to use cold bobbins which are relatively inexpensive. The rotation speed of the motor 310 may be kept constant at the forward travel and the reverse travel of the top wire 114 at all times, or may be changed.
A brake and a clutch may be provided between the belt wheel 312 and the motor 310. In the forward running of the top wire 114, the brake is released, the clutch is put in, and the top wire 114 is pulled out by the rotational force of the motor 310. In the reverse travel, the brake is applied, the clutch is broken, and the brake is applied to the travel of the top wire 114.
The pulley wheel 340 is rotatably supported by the shaft 341. A bracket 342 is fixed to the support wall 290, and a tension detecting device 343 including a load cell is provided on the bracket 342. The shaft 341 is provided in the load cell 343. With this configuration, the tension acting on the pulley wheel 340 is detected by the tension detecting device 343. The detection tension of the tension detection device 343 is given to the tension control device 486 via the signal line 344, and it is as described above to be used for the control of the air cylinder 330. Tension detection devices 481 and 482 including other load cells are also provided with the tension detection device 343 to detect tension acting on the corresponding pulley wheels.
36 to 39 show the unwinding side dancer mechanism 350 and the side part 370 included in the top wire unwinding mechanism.
The release side dancer mechanism 350 also includes a fixing roll 351 and a dancer roll 352.
The fixed roll 351 is composed of a plurality of pulley wheels rotatably installed on the support shaft 353. The support shaft 353 is fixed to orthogonal to the vertical support wall 290.
The dancer roll 352 is provided at the tip of the arm 354. The dancer roll 352 is also composed of a plurality of pulley wheels rotatably installed on the support shaft 355. The support shaft 355 is fixed to the arm 354 at an angle as viewed from above with respect to the horizontal and vertical support wall 290.
The top wire 114 is sequentially caught by those grooves (V grooves) between the fixed roll 351 and the dancer roll 352. Since the support shaft 355 of the dancer roll 352 is obliquely corresponding to one pitch of the groove of the roll with respect to the support shaft 353 of the fixed roll 351, like the winding-side dancer mechanism 320, The saw wires 114 are hung so as to exactly follow each groove of these rolls 351 and 352 (all saw wires 114 run vertically and parallel to each other when viewed from the side). By this structure, the top wire 114 runs stably along the grooves of the rolls 351 and 352.
The base end of the arm 354 is fixed to the rotation shaft 356. A support cylinder 357 is erected and installed on the support wall 290, and a rotation shaft 356 passes through the support cylinder 357 and is rotatably supported by a bearing 358 provided in the support cylinder 357. ought. The rotating shaft 356 protrudes to the back surface of the support wall 290.
On the rear side of the support wall 290, the air cylinder 360 is provided in a substantially horizontal position so as to be able to swing by the shaft 361 at its base end. One end of the link 362 is fixed to the rotation shaft 356 protruding to the rear side of the support wall 290. The other end of the link 362 and the tip of the piston rod 360a of the air cylinder 360 are rotatably connected by a joint 363.
Therefore, by driving the air cylinder 360 to advance and retract the piston rod 360a, the arm 354 swings about the rotation shaft 356, and the height of the dancer roll 352 changes. As described above, the air cylinder 360 is controlled by the idle converter 484 so that the detection tension of the tension detection device 481 including the load cell is equal to the set value.
By adjusting the height of the dancer roll 352 by such an air cylinder 360, the tension can be changed continuously (steplessly) even while the top wire is running, like the winding side dancer mechanism 320. do. In particular, on the unwinding side, even if the tension of the wire extending from the rewinding bobbin 540 changes due to winding fluctuations in the rewinding bobbin 540, the position of the dancer roll 352 by the feedback control changes. The tension at the inlet side of the groove roll group is always kept constant.
The back side of the support wall 290 is provided with a synchro transmitter 365 through an attachment member 364. The shaft of the synchro generator 365 is coupled to the rotation shaft 356 by a coupling 366. As a result, the rotation angle of the rotation shaft 356, that is, the swing angle of the arm 354, and the height of the dancer roll 352 thereon are detected by the synchro generator 365. The detection signal of the synchro generator 365 is used for the rotation amount control (wind amount control) of the rewind bobbin 540 as described above, and the height of the dancer roll 352 is always kept substantially constant.
The length portion 370 includes two pulley wheels 371 and 372. The top wire 114 is caught by these pulley wheels 371 and 372. The pulley wheel 371 is fixed to the tip of the rotation shaft 373. The rotating shaft 373 is rotatably supported by the bearing 375 in the supporting cylinder 374 which is mounted on the supporting wall 290. The blade 376 is fixed to the end of the rotating shaft 373 protruding to the back side of the support wall 290. The wing 376 is detected by the photodetector 377 provided on the support wall 290. Therefore, a signal corresponding to the amount of rotation of the pulley wheel 371 is output from the photodetector 377, and the length of the unwinding top wire 114 is calculated based on this signal.
Another pulley wheel 372 is rotatably mounted on the support shaft 290 provided on the support wall 290. This support shaft is pressed in the direction away from the pulley wheel 371. Therefore, the wire 114 between the pulley wheels 371 and 372 is always tensioned, so that accurate length measurement is possible.
(6) horizontal feed mechanism
The front side of the unwinding side traverse mechanism 400 and the winding side transverse mechanism 500 is depicted in FIG. 40. As can be seen from this figure, both transverse feed mechanisms are bilaterally symmetric in their basic structure, and the winding direction detecting device 440 includes a load cell in the horizontal feed pulley wheel 428 of the unwinding side feed mechanism 400. It differs only in that it is installed. In the horizontal feed pulley wheel 528 of the winding-side horizontal feed mechanism 500, a winding direction detecting device is not provided. Therefore, the structure of the unwinding side horizontal feed mechanism is demonstrated with reference to FIGS.
The unwinding side feed mechanism 400 includes two movable shafts 410 and 420. These movable shafts 410 and 420 are slidably passed through supporting cylinders 411 and 421 including bearings, respectively. The support cylinders 411 and 421 are provided in the horizontal feed mechanism frame 391 provided in the apparatus frame 390 of the wire cutting machine. Further, blocks 412 and 422 are fixed to the rear ends of the movable shafts 410 and 420, respectively. Holes are opened at both sides of these blocks 412 and 422, respectively, and parallel guide shafts 413 and 423 pass through these holes. The blocks 412 and 422 are free to slide along the guide shafts 413 and 423, respectively. . Both ends of the guide shafts 413 and 423 are fixed to the frame 391. Therefore, the movable shafts 410 and 420 are guided by the support cylinders 411 and 421 and the guide shafts 413 and 423, respectively, and are slidably supported in the horizontal direction along the guide shafts 413 and 423, respectively. Blocks 412 and 422 are pushed back by pulling springs 419 and 429 respectively.
On the lower surface of the block 412, a pinion 414 is rotatably installed. On the other hand, the movable rack 424 which extends in parallel with the movable shaft 420 is fixed to the upper surface of the block 422 and meshes with the pinion 414. On the opposite side of the movable rack 424, a fixed rack 434 is fixed to the frame 391 at both ends. The fixed rack 434 is also arranged in parallel with the movable shaft 410. Pinion 414 is engaged with this fixed rack 434.
A horizontal servo motor 430 is provided at the rear of the frame 391. The belt wheel 432 is fixed to the rotation shaft of the servo motor 430. On the other hand, a belt wheel 433 is rotatably provided at the front of the frame 391. The belt 431 is caught by these belt wheels 432 and 433. The belt 431 is fixed to the block 422 by the attachment member 435 at its middle portion.
By the rotational drive of the servo motor 430, the block 422, that is, the movable shaft 420, moves in the longitudinal direction through the belt wheels 432 and 433 and the belt 431. Since the movable rack 424 fixed to the block 422 is engaged with the pinion 414, which pinion 414 is installed at the block 412 and at the same time is engaged with the fixed rack 434, Pinion 414 moves along fixed rack 434. Therefore, the movable shaft 410 also moves in the longer direction. The movement amount of the movable shaft 410 is half of the movement amount of the movable shaft 420.
A guide pulley wheel 415 is rotatably provided by an attachment member 416 at the vertically downwards end of the movable shaft 410. In addition, a horizontal feed pulley wheel 428 is rotatably installed at the tip of the movable shaft 420. The axis of the lateral pulley wheel 428 coincides with the axial direction of the movable shaft 420. As will be described later, a winding direction detecting device 440 is provided at the tip end of the movable shaft 420, and the shaft of the lateral pulley wheel 428 is provided in the device 440. In the vicinity of the distal end of the movable shaft 420, the guide pulley wheel 425 is rotatably provided to the inclined side by the attachment member 426. Between the tip of the movable shaft 410 and the support cylinder 411, and between the tip of the movable shaft 420 and the support cylinder 421, wrinkled limbs 417 and 427 are provided, and the movable shafts 410 and 420 and the support are provided. The bearings in the cylinders 411 and 421 are protected.
The top wire 114 released from the rewind bobbin 540 passes through the horizontal feed pulley wheel 428 of the movable shaft 420, the guide pulley wheel 425, and the guide shaft 415 of the movable shaft 410. 380 is also supplied to the length measurement part 370 mentioned above. In the intermittent reciprocation of the top wire 114, the rewind bobbin 540 is formed by unwinding the top wire 114 from the rewind bobbin 540 or winding the top wire 114 by the rewind bobbin 540. The movable shaft 420 advances and retracts according to the unwinding position or winding position of the wire from the wire, so that the lateral pulley wheel 428 is always positioned just above the releasing position or winding position of the wire.
In FIG. 36, the shaft 381 of the pulley wheel 380 is provided in the tension detection device 382 including the load cell. The tension detection device 382 is fixed to the frame by the attachment member 383. The tension acting on the pulley wheel 380 is detected by the tension detection device 382. This detection tension is used for display.
Regarding the winding side transfer mechanism 500, the movable shafts 510 and 520, the guide shafts 513 and 523, the guide pulley wheel 515 and its attachment member 516, the guide pulley wheel 525 and its attachment are shown in FIG. A member 526 and a lateral pulley wheel 528 are shown.
The top wire 114 sent through the pulley wheel 340 of the winding mechanism is caught by the horizontal pulley wheel 528 via the guide pulley wheel 515 and the guide pulley wheel 525, and is wound on the winding bobbin 550. Wound by In the intermittent reciprocation of the top wire 114, the movable shaft 520 may be wound depending on the winding of the top wire 114 by the winding bobbin 550 or the unwinding of the top wire 114 from the winding bobbin 550. Is advanced, control is performed so that the lateral pulley wheel 528 is always directly above the winding or unwinding position of the wire.
On the winding side, the winding of the top wire in the winding drum 550 starts from one predetermined end of the winding drum 550. In addition, since winding of the wire is performed under the control of the horizontal feed control device 493 on the winding side, accurate winding is performed and the winding state is also known. The rewinding drum 540 may be wound around the saw wire at the saw wire manufacturing plant. Therefore, it is unknown whether the wire is wound accurately. Also, it is not known where the end of the top wire is located on the rewind drum 540 or which end thereof. For this reason, the system differs from the horizontal feed control in the unwinding side horizontal feed mechanism 400 and the horizontal feed control in the winding-side horizontal feed mechanism 500.
The horizontal feed control on the winding side will be described. The horizontal feed drive motor 530 is a servo motor. By setting a control pattern in advance, rotation control of the servo motor can be performed. Fig. 45 shows the transverse movement speed pattern when the positioning control of the transverse pulley wheel 528 on the winding side is performed. At the positions corresponding to both ends of the winding bobbin 550, the moving direction of the horizontal feed pulley wheel 528 is switched. The transverse travel speed also varies depending on the amount of wire that can be wound around the winding bobbin 550. By setting such a horizontal feed speed pattern in advance in the horizontal feed control device 493, it is possible to control the speed of the motor 530 in accordance with this pattern. This is because it is determined that the top wire is wound from one end of the winding bobbin 550. This is because the winding of the wire is also in accordance with the above speed pattern by winding in accordance with the above speed pattern. This eliminates the necessity of providing a sensor for detecting that the lateral pulley wheel 528 has reached the position at both ends. By providing the position sensor, it is possible to prevent an overrun that is likely to occur when the movement direction is changed based on the detection signal of the position sensor. Horizontal feed width can always be controlled. In addition, by using a servo motor, the variable speed range becomes wider, and the winding pitch can be realized.
In the intermittent reciprocating system of the top wire, the wire from the winding bobbin 550 is also loosened. In unwinding the wire, the speed pattern shown in Fig. 45 may be reversed and controlled at the position to switch from winding to unwinding.
The horizontal feed control on the unwinding side will be described.
If the rewind bobbin is for unwinding only, the transverse feed mechanism is not necessary on the unwinding side. In this embodiment, because the intermittent reciprocation of the top wire is performed as described above, the wire can also be wound on the rewind bobbin 540.
The horizontal feed control device 491 cannot recognize both parts of the wound state of the top wire in the rewind bobbin manufactured in a factory or the like. In addition, the end of the saw wire is not known in which position of the rewind bobbin. Therefore, when the rewind bobbin is newly set, it is necessary to start after confirming the winding direction of the wire. In order to detect this winding direction, a winding direction detecting device 440 is provided.
Referring to Fig. 46, there are two winding directions, a and b. When the top wire is ejected from the rewind bobbin 540, the tension force Fa or Fb of the wire acts on the horizontal feed pulley wheel 428 in accordance with the winding direction of the top wire. The winding direction detecting device 440 detects this component. When the winding direction is a, the component force Fa acts on the pulley wheel 428. At this time, the pulley wheel 428 is moved in the direction of the arrow A. FIG. When the winding direction is b, the component force Fb acts on the pulley wheel 428. In this case, the pulley wheel 428 is moved in the direction of the arrow b. In this way, the horizontal feed control device 491 automatically determines the winding direction of the top wire in the bobbin 540, determines the moving direction of the horizontal feed pulley wheel 428, and starts the horizontal feed control.
The detection of the winding direction and the horizontal feed control based thereon can be performed not only when a new rewind bobbin is set, but also in other states when the running direction is changed in intermittent reciprocating driving. For example, the winding direction detection signal from the winding direction detection device 440 is always introduced to the horizontal feed control device 491, and the winding direction is always monitored. When the matching of the winding direction detected and the moving direction of the horizontal feed pulley wheel 428 is shifted, the moving direction of the horizontal feed pulley wheel 428 is corrected along the detected winding direction.
The configuration of the winding direction detecting device will be described in detail with reference to FIG. 47 to FIG. 48.
A boss 441: boss is firmly fixed to the tip of the movable shaft 420. On the front end face of this boss 441, an elongate substantially rectangular accommodating plate 442 is fixed by bolts. Two holes 443 are opened in the receiving plate 442, and a passive body having a flange is inserted into the hole 443 and fixed to the receiving plate 442 by bolts. It is. A circular pit 445 is formed in the front center of the receiving plate 442. The load cell 460a is accommodated in the pit 445.
On the other hand, the shaft 455 is provided in the center part of the support plate 452 which is substantially rectangular and convex in the center part. A horizontal feed pulley wheel 428 is rotatably installed on the shaft 455 via a bearing 456. At both ends of the support plate 452, a shaft 451 extending in the opposite direction to the shaft 455 is fixed by bolts. The shaft 451 slidably enters the water container 444. Moreover, the recessed part 454 is formed in the center part of the support plate 452 by the surface which faces the receiving plate 442.
Two C-type (but not all) paper holding members are provided. One holding member 447 is formed by joining three pieces with a bolt, and the other holding member 453 is integrally formed. These two holding members 447 and 453 are combined so as to face each other in an orthogonal state and to surround each other. A circular recess 446 is formed in one of the sheet members 447, and the load cell 460b is housed therein. The load cell 460b is fitted to two paper holding members 447 and 453.
The combination of the holding members 447 and 453 is received in the recess 454 of the supporting plate 452. The back surface of the holding member 453 is in contact with the load cell 460a. One holding member 447 is fixed to the receiving plate 442 by a bolt, and the other holding member 453 is fixed to the supporting plate 452 by a bolt.
In the above configuration, the axial component force acting on the lateral pulley wheel 428 is detected along its two load cells 460a and 460b. The output signals of the load cells 460a and 460b are given to differential circuits, and the difference in their outputs is calculated. Since the load cell 460a is pressed by the holding member 453 when the component force Fa acts, the force is mainly detected by the load cell 460a, and the holding member 447 when the component force Fb acts. Since a force is applied to the load cell 460b, the load cell 460b generates a large detection signal.

权利要求:
Claims (38)
[1" claim-type="Currently amended] A wire for cutting the cutting material by hooking the cutting wires to a plurality of parallel grooved rolls, driving the cutting wires by rotating one or more groove rolls, and supplying a processing liquid containing abrasive particles. In the type cutting processing device,
At least two groove rolls of the plurality of groove rolls are disposed up and down so that the cutting wire runs substantially vertically between these groove rolls,
And a cutting material feed device for horizontally advancing the cutting material with respect to the cutting wire running substantially vertically.
[2" claim-type="Currently amended] 3. A third groove roll is installed in addition to the two groove rolls arranged above and below, and the third groove roll is about the same height position as the lower groove roll among the two groove rolls. It is arrange | positioned at the wire type cutting apparatus characterized by the above-mentioned.
[3" claim-type="Currently amended] 3. The wire cutting according to claim 2, wherein the third groove roll is a driving roll driven by a motor, and the rotational movement force of the driving roll is transmitted to the two groove rolls through a power transmission mechanism. Processing equipment.
[4" claim-type="Currently amended] 4. The wire-type cutting process according to claim 3, wherein the power transmission mechanism includes belt wheels provided corresponding to the two upper and lower groove rolls and the third groove roll, respectively, and a belt caught by the belt wheels. Device.
[5" claim-type="Currently amended] 5. The belt according to claim 4, wherein a coupling capable of torque control is provided between the shafts of the two upper and lower groove rolls and the belt wheels installed corresponding to the upper and lower groove rolls, and the belt wheels provided corresponding to the third groove rolls. Wire cutting device is fixed to the shaft of the groove roll.
[6" claim-type="Currently amended] The motor of claim 2, wherein the motor drives the third groove roll to rotate.
A power transmission mechanism having an output shaft corresponding to the two groove rolls, and transmitting a rotational movement force of the motor to the output shaft;
And a torque controllable coupling provided between the shafts of the two groove rolls and the output shaft corresponding thereto.
[7" claim-type="Currently amended] The top and bottom two groove rolls and the third groove roll are rotatably supported by the frame, and the frame is detachable from the base of the wire cutting device. Wire cutting machine.
[8" claim-type="Currently amended] 8. The wire cutting device according to claim 7, wherein the output shaft of the drive device provided in the wire cutting device and the shaft of at least one groove roll in the groove roll are coupled by a detachable coupling.
[9" claim-type="Currently amended] The cutting wires are driven by rotating the cutting wires to the plurality of parallel grooved rolls and rotating the at least one groove roll, and the cutting liquid is cut by supplying a processing liquid containing abrasive particles. In the wire cutting machine,
Three groove rolls are provided, and these groove rolls are arrange | positioned in the position corresponded to the vertex of a right triangle which has two sides of a vertical and a horizontal, The wire-type cutting processing apparatus characterized by the above-mentioned.
[10" claim-type="Currently amended] 10. The wire cutting device as set forth in claim 9, wherein the plurality of groove rolls are rotatably mounted to the frame, and are detachable from the expectations of the wire cutting device of the frame.
[11" claim-type="Currently amended] 10. The cutting material conveying device according to claim 9, wherein a cutting material feed device is provided to hold the two cutting rolls arranged up and down among the three groove rolls, and to retreat the cutting material almost horizontally with respect to the cutting wire running substantially vertically. Wire-type cutting processing apparatus characterized by the above-mentioned.
[12" claim-type="Currently amended] 12. The wire unwinding mechanism according to any one of claims 1 to 11, wherein a wire releasing mechanism for sending a cutting wire to the groove roll and a wire winding mechanism for winding the cutting wire from the groove roll are simultaneously disposed on one side of the groove roll. Wire-type cutting processing device characterized in that there is.
[13" claim-type="Currently amended] The cutting wires are driven by rotating the cutting wires to the plurality of parallel grooved rolls and rotating the at least one groove roll, and the cutting liquid is cut by supplying a processing liquid containing abrasive particles. In the groove roll unit used in the wire cutting machine,
A groove roll unit, characterized in that a plurality of groove rolls are rotatably provided in the frame, and the frame is detachable from the expectations of the wire cutting device.
[14" claim-type="Currently amended] The groove roll unit according to claim 13, wherein three groove rolls are provided, and these groove rolls are disposed at positions corresponding to vertices of a right triangle having two sides, vertical and horizontal.
[15" claim-type="Currently amended] 15. The groove according to claim 14, wherein a cover is provided on the surface of the frame except for the surface to which the cutting material advances and the bottom surface of the cover forms a cutting debris accommodating portion between two lower groove rolls. Roll unit.
[16" claim-type="Currently amended] The groove roll unit according to any one of claims 13 to 15, wherein an annular elastic seal is provided in the frame so as to surround an axis of the groove roll protruding from the frame.
[17" claim-type="Currently amended] The cutting wires are driven by rotating the cutting wires to the plurality of parallel grooved rolls and rotating the at least one groove roll, and the cutting liquid is cut by supplying a processing liquid containing abrasive particles. In the wire type cutting processing method,
By arranging at least two groove rolls of the plurality of groove rolls up and down, the cutting wire is made to run substantially vertically between these groove rolls,
A cutting method for cutting wires, characterized in that the cutting material advances and retracts substantially horizontally with respect to the cutting wire which runs substantially vertically.
[18" claim-type="Currently amended] The third groove roll is provided in addition to the two groove rolls arranged above and below, and the third groove roll is positioned at approximately the same height as the lower groove roll among the two groove rolls. The wire cutting method characterized by the above-mentioned.
[19" claim-type="Currently amended] 19. The wire cutting according to claim 17 or 18, wherein a wire for cutting is sent from one side of the groove roll to the groove roll, and a wire for cutting is taken out and wound from the groove roll to the one side. Processing method.
[20" claim-type="Currently amended] 10. The wire guide according to claim 1 or 9, wherein a groove through which a cutting wire passes is formed between the two groove rolls disposed up and down among the three groove rolls and the transfer path of the cut material. Wire cutting device characterized in that the installation.
[21" claim-type="Currently amended] 21. The wire cutting device as claimed in claim 20, wherein a nozzle for supplying a processing liquid to the cutting wire is disposed between the wire guide and the transfer path of the cut material.
[22" claim-type="Currently amended] The cutting wire is run by hooking the cutting wire to at least two groove rolls arranged in parallel, and rotating the at least one groove roll to drive the cutting wire, and supplying a processing liquid containing abrasive particles to cut the cutting material. In the wire type cutting processing machine,
A wire-cutting device, characterized in that a groove in which a cutting wire passes or is formed in proximity to at least one groove roll is provided.
[23" claim-type="Currently amended] The said wire guide is arrange | positioned at the position of the cutting direction forward of the cutting wire rather than the conveyance path of a to-be-cut material, in the position between the conveyance path of a to-be-cut material and at least 1 groove roll. Wire cutting machine.
[24" claim-type="Currently amended] The wire unwinding mechanism according to claim 1 or 9, wherein a wire unwinding mechanism for sending a cutting wire to the groove roll and a wire winding mechanism for winding the cutting wire from the groove roll are provided, and at least the wire unwinding mechanism or the wire winding mechanism. In one mechanism, a dancer mechanism for adjusting the tension of the cutting wire is provided,
The dancer mechanism includes a rotatable fixed roll and a vertically movable movable roll, wherein a cutting wire is caught between the two rolls, and the movable roll is supported by a continuously adjustable mechanism. Formula cutting processing device.
[25" claim-type="Currently amended] 25. A wire cutting device according to claim 24, wherein said continuously adjustable mechanism comprises an air cylinder.
[26" claim-type="Currently amended] A groove roll group including a plurality of groove rolls arranged in parallel and having a cutting wire interposed therebetween, a wire releasing mechanism for supplying the cutting wire to the groove roll group, and a mechanism for winding the cutting wire from the groove roll group. In one wire cutting machine,
At least one of the wire releasing mechanism and the wire winding mechanism is provided with a dancer mechanism for adjusting the tension of the cutting wire.
The dancer mechanism includes a rotatable fixed roll and a vertically movable movable roll, and a cutting wire is caught between the two rolls, and the movable roll is supported by a continuously adjustable mechanism. Cutting processing equipment.
[27" claim-type="Currently amended] The wire winding mechanism according to claim 1 or 9, further comprising: a wire unwinding mechanism for supplying a cutting wire to the groove roll, and a wire winding mechanism including a winding bobbin wound around the cutting wire from the groove roll. A capstan mechanism is provided only in the wire winding mechanism, and the capstan mechanism is adjusted so that the wire tension on the winding bobbin side is lower than the wire tension on the groove roll side by the capstan mechanism.
[28" claim-type="Currently amended] A groove roll group including a plurality of groove rolls arranged in parallel and in which the cutting wire is caught, a wire unwinding mechanism for supplying the cutting wire to the groove roll group, and a winding bobbin wound around the cutting wire from the groove roll group. In the wire-type cutting device provided with a wire winding mechanism comprising:
A capstan mechanism is provided only in the wire winding mechanism, and the wire type cutting device is adjusted so that the wire tension on the winding bobbin side is lower than the wire tension on the groove roll group side in accordance with the capstan mechanism.
[29" claim-type="Currently amended] The wire cutting device according to claim 28, wherein the capstan mechanism includes two or more rolls, and the cutting wires are caught by these rolls.
[30" claim-type="Currently amended] The wire cutting device according to claim 28, wherein the wire for cutting reciprocally runs, wherein the wire for cutting is sent from the groove roll group to the wire winding mechanism through the groove roll group from the wire unwinding mechanism. An apparatus for driving at least one of the two rolls in a direction of tensioning the cutting wire toward the winding mechanism side, and at least one of the two rolls at the time of driving in the reverse direction to the forward traveling; A device for cutting wires, comprising a device for braking.
[31" claim-type="Currently amended] 30. The shaft of the fixed roll in the dancer mechanism and the shaft of the movable roll, or the capstan mechanism according to claim 26 or 29, so that the cutting wire hung in plural times is parallel between the two rolls. One of the shafts of the two rolls is inclined with respect to the other.
[32" claim-type="Currently amended] In the tension adjustment mechanism including two rolls, and the cutting wire is caught in multiple times between these rolls,
One side of the shaft of these rolls is inclined with respect to the other so that the cutting wire caught on two rolls may become in parallel.
[33" claim-type="Currently amended] The said to-be-cut material conveying apparatus is provided with the holding apparatus which hold | maintains a to-be-cut material, The cut material holding apparatus is a support body, a 1st rotating body, and a 2nd. Wherein the support body rotatably supports the first rotating body about a first axis, and the first rotating body orthogonally crosses the second rotating body to the first axis. And a cutting material is rotatably supported about a second shaft, and a cutting material is installed in the second rotating body.
[34" claim-type="Currently amended] The cutting wires are hooked to a plurality of parallelly arranged groove rolls, and the cutting wires are driven by rotationally driving at least one groove roll. In the holding device for holding a material to be cut, which is used in a wire-type cutting device for supplying a processing liquid to cut the material to be cut,
And a support, a first rotor, and a second rotor, the support having a portion rotatably supporting the first rotor about a first axis, wherein the first rotor is And a portion for rotatably supporting the second rotating body about a second axis perpendicular to the first axis, wherein the second rotating body has a portion for supporting the cutting material. Cutting material holding device.
[35" claim-type="Currently amended] 35. The cutting material holding device according to claim 34, wherein the first axis and the second axis are orthogonal to each other.
[36" claim-type="Currently amended] The wire unwinding mechanism according to claim 1 or 9, wherein a wire unwinding mechanism for sending a cutting wire to the groove roll and a wire winding mechanism for winding the cutting wire from the groove roll are provided, and the wire unwinding mechanism includes a horizontal feed mechanism. The transverse feed mechanism includes a movable body movable in parallel with the axis of the rewind bobbin of the wire, and a direction detecting device is wound around the front end of the movable body, and the winding direction detecting device includes:
A housing member provided at the distal end of the movable body,
A support slidably held in the axial direction of the rewind bobbin on the receiving member;
A transverse pulley wheel provided on the support rotatably by an axis parallel to the axis of the rewind bobbin,
And a sensor provided between the housing member and the support, the sensor detecting the axial force of the rewind bobbin which is released from the rewind bobbin and which acts on the cutting wire caught on the transverse pulley wheel. Cutting processing equipment.
[37" claim-type="Currently amended] Claims [1] An apparatus for detecting a winding direction of a wire rewinding from a rewind bobbin, the apparatus being provided in a horizontal transfer mechanism including a movable body movable in parallel with an axis of a rewind bobbin of a wire
A housing member provided at the distal end of the movable body,
A support slidably held in the axial direction of the rewind bobbin on the receiving member;
A transverse pulley wheel provided on the support rotatably by an axis parallel to the axis of the rewind bobbin,
A wire provided between the housing member and the support, the sensor being released from the rewind bobbin and detecting a component force in the axial direction of the rewind bobbin acting on the cutting wire caught on the transverse pulley wheel. Winding direction detection device.
[38" claim-type="Currently amended] The wire unwinding mechanism according to claim 1 or 9, wherein a wire unwinding mechanism for sending a cutting wire to the groove roll and a wire winding mechanism for winding the cutting wire from the groove roll are provided, and the wire winding mechanism includes a horizontal feed mechanism. This horizontal feed mechanism
A movable body movable in parallel with the axis of the rewind bobbin of the wire,
A horizontal feed pulley wheel provided at the distal end of the movable body,
It includes a motor for driving the movement of the movable body,
And said motor is controlled in accordance with a predetermined horizontal feed rate and amount of movement in said servo motor.

类似技术:

---

公开号 | 公开日 | 专利标题

---

EP0206985B1|1989-03-29|Apparatus for separating articles being in contact with each other

---

RU2310549C2|2007-11-20|Superabrasive wire saw-winding apparatus, cutting apparatus with superabrasive wire saw, winding method of superabrasive wire saw

---

DE4130269C2|1996-05-23|Method and device for manufacturing laminated prepreg parts

---

EP0496049B1|1995-05-17|Improvement to the device for feeding a cable into an automatic cable manufacturing machine

---

DE102004020465B3|2005-09-01|Wire tension regulator for winding machine has braking wheel which may be driven by electric motor and braked by disk brake applied by moving coil actuator

---

US6552811B2|2003-04-22|Cutting blade detection mechanism for a cutting machine

---

US6027062A|2000-02-22|Optical fiber dual spindle winder with automatic threading and winding

---

EP0423443B1|1994-09-28|Process and device for carrying-out the process to feed a cable into a cable manufacturing automaton

---

JP4866188B2|2012-02-01|Wire saw

---

JP5513964B2|2014-06-04|Automatic screw tightening device

---

KR100670102B1|2007-01-16|Process and device for the manufacture of individual glass plates

---

CN101332580B|2012-05-09|Polishing apparatus and polishing method

---

EP0145527A2|1985-06-19|Fluid-jet cutting machine for webs

---

CN1184104C|2005-01-12|Tension regulating device for film

---

EP1413371A2|2004-04-28|Coil material feeding apparatus

---

JP2014121784A|2014-07-03|Wire slicing method of workpiece, and workpiece produced by method

---

US5322228A|1994-06-21|Method for screening optical fiber and apparatus for carrying out method

---

JP4049900B2|2008-02-20|Wire saw cutting device

---

KR20020002426A|2002-01-09|Rocking apparatus and method for slicing a work piece utilizing a diamond impregnated wire

---

JP2011169898A|2011-09-01|Method and device for unbalance correction on vehicle wheel

---

CN101062737A|2007-10-31|Winding machine for rolling thin sheet material on winding shaft and related winding method thereof

---

CN101784181A|2010-07-21|Apparatus for supplying electronic parts and chip mounter having the same

---

JP5095141B2|2012-12-12|Tape-like metal substrate surface polishing system and polishing method

---

EP2218532B1|2013-10-30|Wire saw device and method for operating same

---

CN201128032Y|2008-10-08|Tension device of underwater diamond rope saw

同族专利:

---

公开号 | 公开日

---

JP3345018B2|2002-11-18|

---

KR100313652B1|2001-12-28|

---

EP0827822A4|2004-08-18|

---

EP0827822A1|1998-03-11|

---

WO1997031765A1|1997-09-04|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

法律状态:
1996-02-28|Priority to JP96-91699

---

1996-02-28|Priority to JP96-091699

---

1996-02-28|Priority to JP9169996

---

1996-09-30|Priority to JP96-276932

---

1996-09-30|Priority to JP27693296

---

1997-02-28|Priority to PCT/JP1997/000622

---

1997-02-28|Application filed by 가미니시 히토시, 도쿄 세이코(주)

---

1999-01-25|Publication of KR19990008077A

---

2001-12-28|Application granted

---

2001-12-28|Publication of KR100313652B1

优先权:

---

申请号 | 申请日 | 专利标题

---

JP96-91699|1996-02-28|

---

JP96-091699|1996-02-28|

---

JP9169996|1996-02-28|

---

JP27693296|1996-09-30|

---

JP96-276932|1996-09-30|

---

PCT/JP1997/000622|WO1997031765A1|1996-02-28|1997-02-28|Wire type cutting work apparatus and method therefor|