• 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 device for applying a force, such as a clamping device, comprises an electric motor (2) which, when energised, causes rotation of a nut (8) which in turn causes linear displacement of a spigot (9) and of an output element (16). When the output element (16) meets a resistance and is arrested, a resilient assembly (15) is compressed, and relative movement takes place between a rod (17) carried by the output element (16), and a tube (18), carried by the spigot (9). This relative movement is detected by a transducer (20) which, when the movement reaches a predetermined value, delivers a signal which causes the motor (2) to be de-energised. The device enables a predetermined clamping force to be achieved and maintained substantially constant, or varied in a predetermined manner. The device may be used on machine tools. <IMAGE>
    公开号:SU1164003A1
    申请号:SU817771613
    申请日:1981-01-20
    公开日:1985-06-30
    发明作者:Хинков Хинков Димитър；Георгиев Генов Николай；Йорданов Цървенков Александър；Петров Камбуров Светлозар
    申请人:Институт За Металорежещи Машини (Инопредприятие)；
    IPC主号:
    专利说明:

    The invention relates to an electro-mechanical clamping device having a translational movement in two directions, mainly intended for work on metal-working machines for carrying out clamping operations.
    Devices are known consisting of an electric motor, to whose shaft a gearbox is connected, and the gearbox, in turn, transmits movement by means of an adjustable taring coupling to a conversion-output unit, which transmits the necessary force for clamping actuators MOB (A. Tservenkov et al. Mechanized clamping means , ed. Technique, Sophie, 1980).
    If an electromechanical clamping device is designed to carry out axial force, the transducer-outgoing assembly consists most often of a screw and a nut and is completed with a elastic double-acting accumulator for energy storage.
    All of these elements without the elastic accumulator of a double-acting device, which was later named for the multiplicity of the accumulator, are usually housed in a common housing, by means of which the device is fixed to a cutting machine.
    However, the elements of the taring adjustable clutch wear intensively during operation, which undesirably changes the outgoing forces.
    The object of the invention is to create an electromechanical clamping device in which the above-mentioned disadvantages are eliminated, which would ensure a constant outgoing force and automatic shutdown of the engine when this force is reached, as well as automatic regulation of the necessary clamping force.
    The task in accordance with the invention is to create an electromechanical clamping device, which consists of a motor with a hollow shaft connected in series, a gearbox that converts a unit for converting the rotational movement into a bi-directional axial movement and an elastic accumulator of two-way action, the latter being connected to a movement converter, engine brake control. A transducer assembly usually consists of a pair of screws, one element of which is connected to the gearbox and has a rotational movement, while the other moves only axially.
    In accordance with one embodiment of the invention, the connection between the transducer and the elastic storage device, usually consisting of a body, a mandrel housed therein, and an elastic element — most often a package of cup springs mounted on the latter, is made as follows. A displacement transducer connected to the mandrel is attached to the axially displacing element of the outgoing assembly, and through it to an elastic element, the degree of deformation of which is taken into account. The elastic storage device is located behind the body of the clamping device and coaxially connected to the axially movable element of the conversion unit.
    In another embodiment of the invention, the elastic element of the accumulating device is located in the body of the device, and it is mounted on the element of the rotational movement of the transforming unit. Here, the displacement transducer is rigidly fixed to the housing or non-swinging part of the current-carrying device of the electric motor and the connection between the transducer and the axially moving element of the transducer assembly is made.
    The advantage of the invention is that the control commands for braking the motor are obtained directly depending on the deformation of the elastic element caused by the outcome of axial force. There is no need to use a taring adjustable clutch with its disadvantages.
    The advantage of the invention in the second embodiment is that the elastic accumulator device of a two-way action is not designed as a self-contained unit outside the dimensions of the electromechanical device, but is embedded in its case. This creates great opportunities for application, and in some cases technological capabilities of machine tools are enhanced. So, for example, when mounted on a rotating spindle and using a tube for a transfer rod to the chuck, the hole of the spindle is released and a part of the workpiece can be squeezed into it. FIG. Figure 1 shows a longitudinal section of an electromechanical clamping device with outgoing translational movement in two directions, which is mounted on rotating spindles of machine tools; in fig. 2. Electromechanical clamping device with an elastic element embedded in the housing, without an elastic storage device as a self-contained unit. The device consists of a housing in which an electric motor 2 is placed, the hollow shaft 3 of which rests on the flanges 4 and 5, fixed in housing I. In the front part of the housing I, with the base of the electric motor 2, an 11-planetary reducer 6 is integrated, the stroke 7 of which is rigidly connected to the nut 8, which has a rotational motion and is screwed on the screw 9. The screw plays the role of an axially moving element and is rotationally limited by a screw Ø, closing the front end of the housing I. The nut 8, the screw 9 and the flange 10 form a transformer assembly of the pressing device. Movement from the electric motor 2 to the planetary gearbox 6 is transmitted via gear I1, made at the front end of the shaft 3 and engaged with the planetary gears 12 of the gearbox 6. The nut 8 of the conversion of the outgoing assembly with the stroke 7 of the planetary gearbox 6 is installed by two axial gears bearings 13 (subclasses). A storage device is gripped to the front end of the screw 9, comprising a housing 14, an elastic element 15 and a mandrel 16, with the housing 14 left from a cylinder and a closing sleeve in which a rotationally limited mandrel 16 is placed, on which an elastic element 15 is mounted In this case, the package of cup springs. They are installed between two washers and are limited by a nut screwed on the mandrel 16. The housing 14 of the battery of the device is threaded to the screw. The screw 9 of the conversion unit is made with a through hole in which the rod 17 is mounted, the screw 18 is attached to the screw through a hollow shaft 3 of electric motor 2 and exiting outside. At the end of the tube 18, the cup 19 rests against which the transducer 20 is fixed. The cup 19 is mounted axially movable in a jig 21 gripped to the current-carrying assembly 22 of the electric motor 2, and more precisely to the non-rotating portion 23 of the current-conducting assembly 22. The mandrel 16 via a rod 17 placed in tube 18, is in contact with the probe of the converter 20. The device operates as follows. In order to create a push-pull, the rotational motion of the electric motor 2 is transmitted to the planetary gearbox 6, the stroke 7 of which turns the nut 8, and the screw 9 together with the accumulator connected to it moves forward until the mandrel 16 encounters resistance. Together with the screw 9, the tube 18 and the rod 17 associated with the mandrel 16 move. After the end of the movement of the mandrel 16, with further movement of the screw 9, the deformation of the elastic element 15 begins, and the rod 17 moves backward relative to the tube 18. This movement is counted by the converter 20 and upon reaching a certain amount of deformation of the elastic element 15, which corresponds to the required outgoing force, the converter 20 sends a signal to turn off the electric motor 2. To activate the device in reverse th direction signal is supplied to the motor for pivoting ° in the opposite direction, the nut 8 by varying its direction of rotation, moves the screw 9 together with the housing 14 of the storage device to eliminate Neny pressure generated force. Screw 9, along with the entire accumulator, continues to move until the tension is created in opr-16, which stops its movement, and BHHt 9, removing, deforms the elastic element 15, the rod 17 moves forward relative to the pipe 18 and the converter 20 sends a signal to turn off the engine 2. In another embodiment of the invention, the electromechanical device is designed in such a way that the stroke 7 of the gearbox 6 is integral with the nut 8 of the conversion-output unit. The elastic element 15 of the accumulator device is located between two two thrust washers 24, limited in the space between the two tongs 13, by means of which the nut 8, being one whole with a stroke, abuts against the housing 1 and (} trench 10. Thrust washers 24 limited between one tide nut 8 and a restricting nut that is screwed on the elongated part of the nut 8. The housing of the storage device is essentially a housing 20 nom.
    1 electro-mechanical clamping device. The nut 8 contacts with the rod 17 located in the hole of the hollow shaft 3, and through it with the probe of the converter 20. In this embodiment, the converter 20 is fixed to the non-rotating part 23 of the current-carrying device 22. The rod 17 1 is spring-loaded to ensure constant contact between the nut 8 and converter 20.
    The method of operation of a variant of the device according to FIG. 2 next. 116
    to release the actuator, the motor 2 rotates in the opposite direction and as the rod 17 and the probe of the converter 20 move in the opposite direction, the latter gives a similar signal to the braking of the electric motor 2.
    30 Recognized as an invention according to the results of an examination carried out by the Office for the Invention of the People’s Republic of Bulgaria. 3 When clamping, the torque from the electric motor 2 is transmitted to the planetary gearbox 6, the nut 8 rotates and moves the screw 9 until the latter meets resistance. The screw 9 stops its movement, and the nut 8, continuing its rotation, moves axially along the screw 9, begins to deform the elastic element 15, bounded between two thrust washers 24. The rod 17, which is following the axial movement of the nut 8, moves together with the probe converter 20 and at a certain height of movement, corresponding to the required axial force, converter 20 provides signals for switching off the electric motor 2. When the device, i.e. for
    u
    权利要求:
    Claims (6)
    [1]
    1. ELECTROMECHANICAL CLAMPING DEVICE, including a housing, an electric motor with a hollow shaft, connected to a gearbox and a converting unit for converting rotational motion into axial, consisting, for example, of a screw, nut and a restricting flange, and an elastic accumulating device of double-acting, connected to the converting unit characterized in that the converting unit 8, 9, 10 is directly connected to the reducer 6, and the elastic accumulating device is connected to the movable converter introduced into the device Nia 20, electrically connected to the electric motor 2.
    [2]
    2. The device according to π. 1, characterized in that the gearbox 6 is planetary and its stroke 7 is rigidly fastened to the nut 8 of the transforming unit mounted rotatably in the housing 1.
    [3]
    3. The device pop. 2, characterized in that a pipe 18 is attached to the screw 9 of the converting unit, located in the hollow shaft 3 of the electric motor 2, at the free end of which is fixed a cup 19 carrying the movement transducer 20.
    [4]
    4. The device pop. 3, characterized in that the housing is attached to the front end of the screw 9
    14 of the elastic storage device including the mandrel 16 and the elastic element 15, mounted on it, and the mandrel 16 by means of the rod 17, placed in the pipe 18, is connected with the transducer 20 movement.
    [5]
    5. The device pop. 2, characterized in that the nut 8 of the converting unit is mounted axially movable relative to the housing 1, the elastic element 15 of the accumulating device is positioned between two thrust washers 24 mounted on the nut, one of which is designed to interact with the housing I, and the second with the flange 10 .
    [6]
    6. The device pop. 5, characterized in that in the hollow shaft 3 of the electric motor 2 there is a rod 17 designed to interact with the end face of the nut 8 and the converter 20 mounted on the housing 1.
    SU „1164003
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1164003A1|1985-06-30|Electromechanical clamping device
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    US4567794A|1986-02-04|Apparatus for producing an axial clamping force for rotating spindles, and a method of operation for an apparatus of this kind
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    同族专利:
    公开号 | 公开日
    SE8100274L|1981-07-25|
    FR2474375B1|1985-01-04|
    DE3102235A1|1981-12-10|
    HU189490B|1986-07-28|
    BG31534A1|1982-02-15|
    CH651488A5|1985-09-30|
    GB2068272A|1981-08-12|
    FR2474375A1|1981-07-31|
    CS34081A1|1985-07-16|
    CS241960B1|1986-04-17|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1967045A|1931-11-05|1934-07-17|Wehmeyer Werner|Chuck and press actuating mechanism|
    GB416153A|1933-06-14|1934-09-13|Alfred Herbert|Electrically-operated chucks for machine tools|
    DE702003C|1937-07-27|1941-01-28|Paul Forkardt Komm Ges|On the outer end of the machine spindle arranged electromotive power drive for the h|
    DE1402995C3|1960-05-09|1975-04-17|Willi 5810 Witten-Annen Lipp|Electric clamp for operating the clamping drive of chucks|DE3218084C3|1982-05-13|1990-07-12|Bald Hubert|DEVICE FOR GENERATING A POSITION ROTATIONAL MOVEMENT|
    DE3218083C2|1982-05-13|1986-11-27|Hubert Dipl.-Ing. 5920 Bad Berleburg Bald|Device for generating a setting torque, in particular for adjusting the position of the jaws of a chuck or the clamping force exerted by them|
    DE3684894D1|1985-12-28|1992-05-21|Forkardt Paul Gmbh|MACHINE TOOL AND ITS OPERATING METHOD.|
    US4723767A|1986-08-08|1988-02-09|De-Sta-Co Division, Dover Resources, Inc.|Rotary powered linear actuated clamp|
    GB2198668A|1986-12-12|1988-06-22|Yang Tai Her|Vice|
    JP4344442B2|1999-12-17|2009-10-14|富士機械製造株式会社|Chuck device|
    EP1262264A4|2000-01-12|2004-05-26|Mitsubishi Electric Corp|Thrust converter, and method and device for controlling the thrust converter|
    DE202012010722U1|2012-05-31|2012-11-27|Hohenstein Vorrichtungsbau Und Spannsysteme Gmbh|Electrohydraulic swing clamp|
    DE202014104118U1|2014-09-03|2015-12-04|Narr Beteiligungs Gmbh|jig|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BG8046356A|BG31534A1|1980-01-24|1980-01-24|Elektromechanikal tightening device|
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