• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    @ A machine for cutting the teeth of a rack for a variable ratio rack and pinion steering gear employing a helical pinion having a plurality of idential teeth engaged with a rack having some tooth gaps of varying form and angular disposition to the rack axis, the machine having a spindle carrying a tool with a single cutting tooth having cutting edges which lie on the surface of a single tooth of the helical pinion; the spindle is arranged for helical reciprocation in a housing between two predetermined limits about a mid position in which the tool is directed normally to the plane of the teeth of the rack, a rack holding fixture, the fixture or the housing being moveable with a relative translatory curvilinear motion during the cutting of a gap of the rack, the motion for any one gap being a part of the locus of the helical pinion when slid without rotation in the same gap of the rack. It is preferred that the tool is retracted away from the rack being cut in a radial direction towards the axis of the spindle, at the end of each cutting stroke.
    公开号:SU1326184A3
    申请号:SU843767324
    申请日:1984-07-20
    公开日:1987-07-23
    发明作者:Эрнест Бишоп Артур；Юрген Реске Клаус
    申请人:Артур Эрнест Бишоп (AU) и Клаус Юрген Рёске (DE)；
    IPC主号:
    专利说明:

    ki, using a copier 19, and the holder of the cutter 29, carrying the cutting tool 28, made in the form of a tooth of a helical gear wheel with two lateral cutting edges. The tool 28 is pivotably and reciprocally movable between two limits in the plane in which the tool is perpendicular to the spindle. Indicated displacements
    The invention relates to the automotive industry and can be used to manufacture the steering mechanisms of machines.
    The purpose of the invention is to simplify the manufacture of rails and to reduce the reliability of 371 by creating a simplified design of the tool that does not require refining.
    FIG. 1 shows a machine with a general view; in fig. 2 is a diagram of the formation of a curvilinear trajectory of movement of the toothed rack during its processing with an illustration of its working position; .on FIG. 3 is a sectional view in FIG. 4 shows a section BB in FIG. 3; FIG. 5 is a diagram of a processing method for a batten (a fragment of processing a single trough); in fig. 6 - a gear rack, underlaying a cutter) when installing the cutting tool perpendicular to the plane of the teeth of the rack.
    The machine is designed to cut the toothed rack 1 with variable pitch and inclination of the teeth, which is subsequently designed to interact with a helical gear wheel (not indicated) in the zero mechanisms of automobiles.
    The machine has a bed 2. The toothed rack 1 is clamped in a clamping device 3 located on the bed. During the teeth cutting of the toothed rack, it moves relative to the bed 2 of the machine at the same time in three directions X, Y and Z.
    The vertical movement Z of the jig 3 is provided
    between the two limits in the plane in which the tool is perpendicular to the plane of the teeth of the toothed rack, by means of a spindle, 30, placed in the tool head 24, interacting with the slide} yum 32, lead “1m in motion with the connecting rod 33 from the crank disk 34 connected to the drive 35. 1 3. item f-ly, 6 ill.
    .
    0
    g
    five
    five
    0
    its movement in guide 4 when adjusting with a three-dimensional pattern 5. The pusher 6 attached to the lever 7 moves along the surface of the template 5 in accordance with the movements X and Y transmitted to the guide 4 and causes the lever 7 to rise and fall by a small angle around the pivot axis 8.
    Pin 8, fixed in guide 9, has an eccentric mounted protrusion 10 that fits into groove 1I in the fixture of guide 4. The weight of lever 7 is such that it forces the pusher 6 to be in contact with the template 5 all the time. Moving Z is s for adjusting the center distance of the toothed rack to be cut to the gear when mounted in the steering gear.
    The slide 12, intended for movement in the X direction, moves along the guide in the slide 13, intended for movement in the Y direction, which further slide in the guide 14 attached to the frame 2,
    The slide 3 is driven by a motor 15 and a lead screw 16, which is an integral part of the mechanism for moving the fixture.
    Sa gasses 12 are moved by means of a tokatel 17 fixed in the lever 18 of the slide 12 and interacting with the cam 19 mounted on the carriage 20.
    Copier 19 is moved during the cutting of each tooth, and is rotated or moved relative to the carriage 20, on which it is installed with the possibility of sliding, in equal steps, after completion of the cutting of each gap between the teeth. This can be done by moving the copier 19 by a fixed amount each time, equal to the axial pitch of the gear (distance a in figure 2), either manually or using an appropriate servo motor and lead screw 21. For manual work, it is enough to provide a copier 19 near the holes 22, located exactly at the distance of the axial pinion pinion, and move the pin 23 from one hole to another. In this case, the carriage 20 and the servomotor with the lead screw 21 are not required, and the copier 19 remains stationary relative to the bed 2 during the cutting of the gap between the teeth.
    The template 5, the carriage 20 and the tool head 24 are rotatably mounted at angles with respectively around the rods 25-27 relative to the normals to the axis of the cut toothed rack 1. This angle o corresponds exactly to the angle ft of the gear installation (FIG. 2).
    The cutting tool 28 is fixed in the holder of the tool 29, which is mounted in the spike 30. The holder of the tool 29 is placed with the possibility of rotation around the pin 31 at a small angle in order to retract the tool with a reverse
    oDo
    The spindle 30 oscillates in the trunnions provided in the tool head 24, both axially and rotationally, by acting on a slide 32, which moves reciprocally in the guide provided in the head 24, under the action of a connecting rod 33, which is driven by a finger a crank connected to the crank disc 34 connected to the actuator 35 via a gear wheel 36. The shaft (not indicated) carrying the crank disc 34 is fixed in the head 24 and carries a copier 37 at the end opposite to the crank disc 34.
    The slider 32 carries a toothed rack 38 which engages with the gear 39, cut into the spindle 30.
    5 0 5
    about
    0
    five
    0
    8D-1
    The spindle 30 (FI1. 4) also bears on it an inco-clutter p lever 40 with a protrusion 41, which engages with the gantry 42 in the carriage 43 installed at a certain angle v
    i
    To the direction of movement of the slider 32. The carriage 43 is installed with a predetermined angle j- and is attached to the slider 32 by means of the nut 44 ,, The fork 40 is fixed from rotation around the axis of the spindle by means of a pin 45 fixed in the head 24 and entering into contact with the forks of the fork lever.
    During the reciprocating movement of the connecting rod 33, the spindle 30 is deflected at some fixed angle, and the forked lever 40 comes into axial movement along the axis of the spindle 30, causing simultaneous axial reciprocating movement of it. The magnitude of such a reciprocating movement depends on the angle r (counterclockwise to produce n equilateral screw thread J.
    In an embodiment of the spindle (Fig. 3), the cutter holder 29 is shown in the cutting position, where it is held by a wedge 46, which engages with an angular groove 47 formed at the end of the cutter holder 29,
    The movement of the wedge 46 from the pin 31. causes the end of the holder of the tool 29 to be lowered downward until it contacts the opposite side of the hole in the spindle 30, raising and lowering the cutting tool with
    The wedge 46 is moved a short distance axially in the spindle 30 at the end of its stroke simultaneously with the axial and rotational movements of the spindle under the action of the copier 37.
    The angular lever 48, which rotates with respect to the head 24 on the pin 49, carries a pusher 50. interacting with the groove 51 of the copier 37, and at its other end is a toothed sector 52, which engages an eccentric 53 mounted on the spindle 30, which engages with the toothed sector 52. The eccentric 53 is axially movable with the spindle 30 and has a helical groove 54 with which the pin 55 passes through the axial groove 56 in the spindle adapter 30 and then through the hole B of the shaft 57.
    5 13 This rod extends axially inside the spindle with the ability to interact with the wedge 46.
    The groove 51 of the copier 37 is made radially in the area of contact with the crank disk FOR, associated with the movement of the slider 32 and the spindle 30, i.e. when the cutter comes out of contact with the workpiece, the Pusher 50 interacts through the gear sector 52 with the eccentric during movement and turns the latter on some way; the angle is relative to the spindle 30, and the pin 55 is axially mixed, which entails the movement of the rods 57 reciprocatingly, which collectively moves the tool in the direction C and D.
    During cutting, the cutter moves along a helical path along and around axis 00. Cutting tool 28 is a tooth of a helical gear wheel with two side cutting edges.
    The tool holder 29 rotates in the spindle 30 around the pin 31 at each end of the reciprocating movement of the spindle, causing the tool to move in direction C when it reaches position I and in direction of SRI D when it reaches position L. By means of such tools Returns after a screw cutting forward run free from the surface that has just been cut.
    The front surface 58 of the cutting tool, having a central axis, has the form of a cross section along one tooth of the gear wheel and during each cutting stroke performs the trajectory of a part of the toothed rack I. The cutting tool 28 is perpendicular to the plane of the teeth of the gear rack.
    The reciprocating movement of the tool along the axis 00 in combination with counterclockwise rotation, i.e. right-handed spiral movement, transfers the tip of the cutting tool from the initial position at the beginning of the cutting stroke to the final position. During idle cut, the tool is deflected to resume the position to start cutting. The point of intersection of the central axis of the front surface and the axis of the spindle 00 in the position when the cutting tool is perpendicular to the plane of the toothed rack is denoted 4
    cheng; ". During the cutting run, point f moves along path gg to form surface IJj in the form of a groove. Changing the direction of gg leads to the formation of a gap between the lath teeth from a U-shaped section at one end (surface IV) to an I-shaped section at the other end (surface V) as a result of which the pressure angle of the U-shaped section is less than the pressure angle and shaped section and changing tooth pitch. The gear wheel 59 with the axis is intended for further work with a chopped turnip having an axis. The rake is located at an angle jb relative to the axis 0302. The rake has a variable pitch (t / t tj t., Etc.). The axial pitch of the gear to engage the rack is different (not indicated).
    Thus, the teeth of the toothed rack have a variable pitch, a variable angle of inclination of the teeth and a variable angle of the profile at the ends.
    The machine works as follows. The sled 13 is located at the initial position away from the cutting tool. The copier 19 is placed in the extreme position by means of a pin 23 placed in the first hole 22. The cutting of the first tooth of the slats begins. The actuator 35 is turned on and the cutting tool moves back and forth along its helical path. The motor 15 starts to work, the slide slowly moves the tool forward, and this continues until the first gap is completed. The required axial movement of the toothed rack is carried out because the pusher 17, which is engaged with the cam 19, transfers the necessary part of the path of the gg track to the slide 12. When cutting of the first gap is completed, the motor 15 stops and the drive 35 stops at the position at which the tool is released. Next, the motor 15 makes a reverse movement and quickly moves the slide 13 back to its original position. The copier 19 is moved one hole by moving the pin 23 to the second hole (a distance equal to the axial pitch of the gear), and the cycle repeats until then; All gaps between teeth will not be processed.
     .
    The pattern 5 provides the necessary movement of raising and lowering the rack.
    If the manual installation of the template is replaced by a servomotor and lead screw 21, and if this servomotor is adapted to install the template sled each time the motor 15 returns the sled 13 to its original position prepared for cutting the next tooth, then the whole rack cutting process is performed automatically .
    权利要求:
    Claims (2)
    [1]
    1. A machine for cutting a toothed rack with variable pitch and inclination of the teeth, designed to interact with the helical gear in the steering gears, on the frame of which the spindle with the tool and the clamping device, gear mechanism are placed with the possibility of reciprocating
    Q
    five
    five
    0
    18А8
    The space of which includes a copier, characterized in that, in order to simplify the production of rails and increase reliability, the tool. is a holder with a cutting element mounted in it in the form of a helical gear tooth with two lateral cutting edges, the spindle being rotatably mounted, with rotation and reciprocating movement between two limits in the plane in which the tool is perpendicular straight to the plane of the teeth of the toothed rack j and the movement of the jig is made to cut one tooth along a curvilinear trajectory corresponding to the part of the tooth profile of the rail.
    [2]
    2. Machine POP.1, characterized in that at least two servomotors and lead screw are inserted into the mechanism for moving the clamping device.
    Og
    FIG. 2
    53 56 55
    Bv
    Phage.Z
    .52
    FIG.
    28
    -i /
     / 17 VX
    J7
    U2.6
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    同族专利:
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    JPH0122092B2|1989-04-25|
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    IT8483389D0|1984-07-20|
    BR8403680A|1985-07-02|
    ES534441A0|1985-05-16|
    DE3461896D1|1987-02-12|
    KR850001047A|1985-03-14|
    KR890000211B1|1989-03-10|
    IN162135B|1988-04-02|
    EP0132347B1|1987-01-07|
    ES8504517A1|1985-05-16|
    EP0132347A1|1985-01-30|
    US4618297A|1986-10-21|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2578187A|1946-06-25|1951-12-11|Hill Myron Francis|Method of making rotors|
    AU515059B2|1977-02-28|1981-03-12|Bishop, A.E.|Broaching machine for variable ratio rack|
    DE3039010C2|1979-10-27|1985-07-11|Jidosha Kiki Co., Ltd., Tokio/Tokyo|Method for producing a rack with a Y-cross section|
    SU1028437A1|1981-04-21|1983-07-15|Zhuravlev Aleksandr V|Method of producing cone milling cutter with helical teeth|DE102010023728A1|2010-06-14|2011-12-15|Liebherr-Verzahntechnik Gmbh|Method of manufacturing a plurality of identical gears by means of machining|
    CN105127520A|2015-09-22|2015-12-09|湖北工业大学|Machining method of C2-order continuation ball-nut type steering gear rockshaft non-circular gear fan|
    DE102015120149A1|2015-11-20|2017-05-24|Robert Bosch Automotive Steering Gmbh|Apparatus and method for hard machining a toothing|
    CN106541186B|2016-12-09|2019-01-18|武汉理工大学|A kind of processing method of circulating ball type no-load voltage ratio diverter gear pair tooth fan flank profil|
    CN106695023B|2016-12-09|2019-01-18|武汉理工大学|A kind of processing method of circulating ball type no-load voltage ratio diverter gear pair rack tooth profile|
    USD843488S1|2017-10-09|2019-03-19|Wist Work Llc|Spinning disc and spindle toy|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AUPG039983|1983-07-21|
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