EP0395889A2 - Dispositif de serrage de pièces - Google Patents

Dispositif de serrage de pièces Download PDF

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Publication number
EP0395889A2
EP0395889A2 EP90106198A EP90106198A EP0395889A2 EP 0395889 A2 EP0395889 A2 EP 0395889A2 EP 90106198 A EP90106198 A EP 90106198A EP 90106198 A EP90106198 A EP 90106198A EP 0395889 A2 EP0395889 A2 EP 0395889A2
Authority
EP
European Patent Office
Prior art keywords
clamping
shaft
guide housing
actuating rod
thread
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90106198A
Other languages
German (de)
English (en)
Other versions
EP0395889B1 (fr
EP0395889A3 (fr
Inventor
Johann Szebold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kontec Konstuktion and Technik Im Maschinenbau GmbH
Kontec GmbH
Original Assignee
Kontec Konstuktion and Technik Im Maschinenbau GmbH
Kontec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kontec Konstuktion and Technik Im Maschinenbau GmbH, Kontec GmbH filed Critical Kontec Konstuktion and Technik Im Maschinenbau GmbH
Priority to AT90106198T priority Critical patent/ATE103226T1/de
Publication of EP0395889A2 publication Critical patent/EP0395889A2/fr
Publication of EP0395889A3 publication Critical patent/EP0395889A3/fr
Application granted granted Critical
Publication of EP0395889B1 publication Critical patent/EP0395889B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/062—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis parallel to the pressing direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive

Definitions

  • the invention relates to a workpiece clamping device which can be actuated by a rotation motor which is reversible in the direction of rotation, consisting of a shaft which can be driven by the rotation motor and is provided with a movement thread, which is rotatable in a guide housing and is axially supported in an intermediate piece on roller bearings, and an actuating rod which is provided with an internal thread is secured against rotation and is connected to a tension arm or the like, and is in engagement with the actuating thread of the shaft for carrying out tensioning or loosening.
  • a rotation motor which is reversible in the direction of rotation, consisting of a shaft which can be driven by the rotation motor and is provided with a movement thread, which is rotatable in a guide housing and is axially supported in an intermediate piece on roller bearings, and an actuating rod which is provided with an internal thread is secured against rotation and is connected to a tension arm or the like, and is in engagement with the actuating thread of the shaft for carrying out tensioning or loosening
  • an intermediate member is arranged at the end of the tensioning cylinder, which is articulated to the tensioning lever.
  • the disadvantage here is that the clamping lever only performs an up and down movement for clamping, so that an adaptation to the position of the workpieces is not guaranteed.
  • the drive motor must be switched off at the end of the tensioning process.
  • additional components such as an axially displaceable axial coupling, an axial spring for the threaded spindle, a movable axial sliding bush, safety limit switches and the like are in this known clamping device. intended.
  • Swing clamps (DE 29 09 464 C2) are also known, in which the clamping head or the clamping arm is arranged on an axially moving piston.
  • the piston carries out a stroke of a certain stroke length, which is composed of the swivel stroke and the clamping stroke.
  • the invention is based on the object of designing a device of the type mentioned at the outset in such a way that, when higher clamping forces are transmitted, both clamping by swiveling and linear movement are possible.
  • the outside of the actuating rod is provided with an outer longitudinal groove, in which a guide and stop bolt, which can optionally be screwed in for a linear (axial) clamping operation, engages in the threaded bore of the internal thread of the actuating rod with an inner longitudinal groove is, a stepped extension with a transverse bore for a coupling device (coupling spring and coupling member) is provided at the free end of the shaft, the coupling member engages in the inner longitudinal groove and disengages after striking the clamping arm on one of the stop pins from this longitudinal groove to perform a linear clamping movement Clamping of the workpiece.
  • a guide and stop bolt which can optionally be screwed in for a linear (axial) clamping operation
  • the outside of the actuating rod is provided with an external longitudinal groove in which a guide and stop bolt, which can optionally be screwed into the guide housing for a linear (axial) clamping process, engages, the shaft is extended by means of a profile pin and engages with a coupling member with a corresponding inner profile,
  • a compression spring is attached, whereby the coupling member is supported on a shoulder of the actuating rod with rotational friction and, after the clamping arm strikes one of the stop pins, overcomes the rotational friction for carrying out a linear clamping movement for clamping the workpiece.
  • An advantageous embodiment provides that a pneumatic motor is provided as the rotary motor, which drives the shaft via a reduction gear.
  • a driving pin arranged eccentrically on the output shaft of the rotary motor engages correspondingly in a coaxial and non-rotatably connected flange disk and that this flange disk is supported on both sides on roller bearings designed as transverse bearings.
  • stop pins for the tensioning arm are provided on the end face of the guide housing.
  • a cover with circumferentially adjustable stop pins is attached to the threaded guide housing in order to achieve an arbitrary pivoting angle of the clamping arm.
  • An advantageous embodiment provides that the shaft of the rotary motor and the guide housing are provided with a thread for screwing into a worktop.
  • the invention has the advantage that the clamping head or the clamping arm does not open after the drive mechanism has been switched off. This has particular advantages when the machine is switched off during breaks, which means that considerable energy savings can be achieved. Workpieces on pallets can also be prepared for later processing for series production. Furthermore, there is the advantage of a small, compact design and large clamping forces can be achieved compared to the known hydraulic clamping devices. Various mechanical connection options can also be implemented.
  • a conventional pneumatic rotary motor 1 which is reversible in its direction of rotation and which is fastened to an intermediate piece 2 serves as the drive.
  • the motor housing is provided with a thread 3, for example, and screwed into the intermediate piece 2.
  • the two piece 2 is used to attach the device to a machine table.
  • the rotary motor 1 is provided with a reduction gear and a driver pin 4 engages in a flange disc 5.
  • the bearing is carried out with the help of roller bearings 6 and 7 in a guide housing 8 which is screwed onto the intermediate piece 2.
  • the driver pin 4 engages in the flange disk 5 off-center and moves about the central axis of this disk 5.
  • a shaft 9 is fastened in the center of the disk 5 and is provided with a movement thread 10 on the outside.
  • An actuating rod 11 is screwed onto this shaft 9 and is displaceable within the guide housing 8.
  • the shaft 9 has a stepped extension 12 with a transverse bore 12 ', in which a coupling member 13 is arranged in the form of a pin with a coupling spring 14. This coupling member 13 engages in an axially extending inner longitudinal groove 15 on the inside of the actuating rod 11.
  • the actuating rod 11 is provided in the middle with a lubrication bore 16 and a wiper 17 is also located between the guide housing 8 and the actuating rod 11.
  • an outer longitudinal groove 18 is provided on the outside of the actuating rod 11 and is engaged by a guide and stop bolt 19 screwed transversely into the guide housing 8.
  • a clamping arm 20 or other clamping head is attached at the end of the operating rod 11.
  • stop pins 21 are attached to the front of the housing.
  • the bolt 19 reaching into the outer longitudinal groove 18 is screwed in, the shaft 9 being driven so that the actuating rod 11 is displaced axially.
  • the displacement is limited by the length of the groove 18.
  • the device If the device is to work as a swing clamp, then the bolt 19 is removed so that the actuating rod 11 can perform a rotary movement. This is caused in that the coupling member 13 engages in the groove 15. This device also acts as an overload protection, the coupling member 13 being pushed back out of the groove 15 when the rotary movement for the actuating rod 11 is correspondingly inhibited.
  • the stop pins 21 serve both as an anti-rotation device for the actuating rod 11 and as a limitation of the pivoting angle of the tensioning arm 20. If the tensioning arm 20 additionally executes a pivoting movement at a certain angle, which can be set as desired using the stop pins 21, the following function results. With the actuating rod 11 extended and after the bolt 19 has been removed, the rotary motor 1 is switched in such a way that the actuating rod 11 is retracted. Since the shaft 9 is connected to the actuating rod 11 by the coupling device 13, 14 and the shaft 9 executes a rotational movement, the tensioning arm 20 likewise executes a corresponding rotational movement.
  • the motor 1 When relaxing, the motor 1 is driven in the opposite direction, ie the actuating rod 11 is extended so that the workpiece is released. If the frictional force between the clamping arm 20 and the workpiece is smaller than the coupling force of the coupling device 13, 14, the clamping arm 20 can pivot up to one of the stop pins 21. After that, until the engine is switched off, the clutch device tion 13,14 causes an axial movement in the direction of relaxation.
  • the shaft 9 is extended by a profile pin 12 ⁇ .
  • a coupling member 13' is placed with a corresponding inner profile and extended by means of a threaded pin 30 which is guided through a shoulder 29 of the actuating rod 11. If the device works as a linear tensioner, then the stop pin 19 is screwed in and engages in the groove 18 (FIG. 3).
  • the actuating rod 11 is axially displaced by the driven shaft 9 with the thread 10.
  • a compression spring is inserted into the space 26 and the spring tension is adjusted by means of a nut 31.
  • the coupling member 13 ' is pressed against the shoulder 29.
  • the actuating rod 11 is taken along when the coupling member 13 is rotated by the friction on the shoulder 29. After the clamping arm 20 strikes one of the stop pins 21, this friction is overcome and the actuating rod 11 executes a linear clamping movement for clamping the workpiece.
  • Grooves 24 are provided on the guide housing 8 for attaching the cover 28 for holding the stop pins 21. Furthermore, a cover screw 25 is screwed onto the actuating rod 11.
  • the spring 14 ' advantageously it is disc springs, is against a disc 23. Threaded sections 22 are used to fasten the device to a worktop Guide housing 8 and the rotary motor 1 and also a screw fastening 27 in the middle of the device on the guide housing 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP90106198A 1989-04-06 1990-03-30 Dispositif de serrage de pièces Expired - Lifetime EP0395889B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90106198T ATE103226T1 (de) 1989-04-06 1990-03-30 Werkstueckspannvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911073A DE3911073C1 (fr) 1989-04-06 1989-04-06
DE3911073 1989-04-06

Publications (3)

Publication Number Publication Date
EP0395889A2 true EP0395889A2 (fr) 1990-11-07
EP0395889A3 EP0395889A3 (fr) 1992-03-04
EP0395889B1 EP0395889B1 (fr) 1994-03-23

Family

ID=6377957

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106198A Expired - Lifetime EP0395889B1 (fr) 1989-04-06 1990-03-30 Dispositif de serrage de pièces

Country Status (4)

Country Link
EP (1) EP0395889B1 (fr)
JP (1) JPH02292145A (fr)
AT (1) ATE103226T1 (fr)
DE (2) DE3911073C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430457A1 (de) * 1994-08-27 1996-02-29 Germa Armaturen Gmbh & Co Kg Spannarm
CN109290828A (zh) * 2018-11-27 2019-02-01 吉林东光奥威汽车制动系统有限公司 一种带有辅助定位装置的主缸体夹紧机构
CN111246969A (zh) * 2017-10-31 2020-06-05 克斯美库股份有限公司 电动式夹紧装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112008548A (zh) * 2020-08-25 2020-12-01 田福来 一种夹持效果好的打磨装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215461A1 (de) * 1982-04-24 1983-11-03 Karlheinz 5800 Hagen Menkhoff Elastomer-schwenkspannzylinder mit uebersetzungsblock
DE3334401A1 (de) * 1983-09-23 1985-04-04 A. Römheld GmbH & Co KG, 6312 Laubach Spann- und stuetzeinheit fuer werkzeugmaschinen
DE3638526C1 (de) * 1986-11-11 1987-07-30 Sta Co Mettallerzeugnisse Gmbh Elektromotorisch antreibbare Werkstueckspannvorrichtung
DE3603618C1 (en) * 1986-02-06 1987-10-01 Friedhelm Hake Clamping device for use on machine tools
US4700936A (en) * 1986-08-26 1987-10-20 Lamb Technicon Corp. Clamp mechanism
EP0255853A2 (fr) * 1986-08-08 1988-02-17 Dover Corporation, De-Sta-Co Division Serre-joints actionné linéairement à entraînement rotatif

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137784A (en) * 1977-11-14 1979-02-06 Industrial Device Corporation Electromechanical equivalent of fluid powered cylinder
DE2909464C2 (de) * 1979-03-10 1982-10-28 Fa. Andreas Maier, 7012 Fellbach Schwenkspanner, insbesondere zum Spannen eines Werkstückes auf einem Maschinentisch einer Werkzeugmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215461A1 (de) * 1982-04-24 1983-11-03 Karlheinz 5800 Hagen Menkhoff Elastomer-schwenkspannzylinder mit uebersetzungsblock
DE3334401A1 (de) * 1983-09-23 1985-04-04 A. Römheld GmbH & Co KG, 6312 Laubach Spann- und stuetzeinheit fuer werkzeugmaschinen
DE3603618C1 (en) * 1986-02-06 1987-10-01 Friedhelm Hake Clamping device for use on machine tools
EP0255853A2 (fr) * 1986-08-08 1988-02-17 Dover Corporation, De-Sta-Co Division Serre-joints actionné linéairement à entraînement rotatif
US4700936A (en) * 1986-08-26 1987-10-20 Lamb Technicon Corp. Clamp mechanism
DE3638526C1 (de) * 1986-11-11 1987-07-30 Sta Co Mettallerzeugnisse Gmbh Elektromotorisch antreibbare Werkstueckspannvorrichtung

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430457A1 (de) * 1994-08-27 1996-02-29 Germa Armaturen Gmbh & Co Kg Spannarm
DE4430457C2 (de) * 1994-08-27 1998-03-12 Germa Armaturen Gmbh & Co Kg Spannarm
CN111246969A (zh) * 2017-10-31 2020-06-05 克斯美库股份有限公司 电动式夹紧装置
KR20200075817A (ko) * 2017-10-31 2020-06-26 가부시키가이샤 코스멕 전동식 클램프 장치
EP3659745A4 (fr) * 2017-10-31 2020-11-04 Kosmek Ltd. Dispositif de serrage actionné électriquement
CN111246969B (zh) * 2017-10-31 2021-10-19 克斯美库股份有限公司 电动式夹紧装置
CN109290828A (zh) * 2018-11-27 2019-02-01 吉林东光奥威汽车制动系统有限公司 一种带有辅助定位装置的主缸体夹紧机构

Also Published As

Publication number Publication date
DE3911073C1 (fr) 1990-07-26
ATE103226T1 (de) 1994-04-15
EP0395889B1 (fr) 1994-03-23
EP0395889A3 (fr) 1992-03-04
DE59005050D1 (de) 1994-04-28
JPH02292145A (ja) 1990-12-03

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