EP0313767B1 - Spannvorrichtung - Google Patents

Spannvorrichtung Download PDF

Info

Publication number
EP0313767B1
EP0313767B1 EP88114394A EP88114394A EP0313767B1 EP 0313767 B1 EP0313767 B1 EP 0313767B1 EP 88114394 A EP88114394 A EP 88114394A EP 88114394 A EP88114394 A EP 88114394A EP 0313767 B1 EP0313767 B1 EP 0313767B1
Authority
EP
European Patent Office
Prior art keywords
clamping device
actuating cylinder
sensor
pressure medium
sensors
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.)
Expired - Lifetime
Application number
EP88114394A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0313767A1 (de
Inventor
Peter Schauss
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.)
DESTACO Europe GmbH
Original Assignee
DE STA CO Metallerzeugnisse 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
Priority claimed from DE8714390U external-priority patent/DE8714390U1/de
Priority claimed from DE8804990U external-priority patent/DE8804990U1/de
Application filed by DE STA CO Metallerzeugnisse GmbH filed Critical DE STA CO Metallerzeugnisse GmbH
Priority to AT88114394T priority Critical patent/ATE62850T1/de
Publication of EP0313767A1 publication Critical patent/EP0313767A1/de
Application granted granted Critical
Publication of EP0313767B1 publication Critical patent/EP0313767B1/de
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
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
    • 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
    • B25B5/16—Details, e.g. jaws, jaw attachments

Definitions

  • the invention relates to a clamping device, in particular toggle lever clamping device for fixing workpieces according to the preamble of the main claim.
  • Clamping devices of the type mentioned are known, for example, from DE-A-34 03 961.
  • Clamping devices of this type are required in order to clamp any workpieces for machining purposes on tables of processing machines, but in particular also to fix sheet metal parts or the like to one another in order to be able to weld them.
  • the actuation of the clamping arms on these devices is usually carried out with actuating cylinders which are pressurized pneumatically from one side and the other in order to be able to bring the clamping arm into the closed position on the one hand and again into the open position on the other hand.
  • the pressure medium connections are attached laterally to the flanges forming the cylinder ends, i.e., in particular the reset pressure medium line extends laterally over the entire length of the actuating cylinder.
  • sensors magnetic field switch or proximity switch
  • these sensors are located either on the head of the device or in the area of the actuating cylinder, with the cable routing also extending laterally on the devices.
  • the invention is therefore based on the object to improve clamping devices of the type mentioned in such a way that such external, lateral, starting from the head piece line guides and lateral resource supply and discharge lines to both ends of the drive cylinder can be eliminated.
  • Such laterally arranged adjusting rods are known according to US-A-2 604 759, but the subject matter of which is a tool actuation device which is completely foreign to the genre, as a tool to be rotated with it via a pneumatically drivable motor axially adjustable with an actuating cylinder, such as drills, milling cutters or the like. is driven.
  • a tool actuation device which is completely foreign to the genre, as a tool to be rotated with it via a pneumatically drivable motor axially adjustable with an actuating cylinder, such as drills, milling cutters or the like. is driven.
  • the cable connections of the sensors and the equipment connection cross from the longitudinal axis of the device.
  • the tensioning device is designed in such a way that the two end flanges of the actuating cylinder are extended towards the actuating rod side, and the piston rod-side flange is provided with a control stand opening.
  • the return pressure medium line is located between the two flanges and the pressure medium connections are located on the flange remote from the piston rod.
  • flange extensions are formed on the actuating rod side in the form of a U-shaped extension piece, between the legs of which the adjustment path of the positioner extends and in the base part of the extension runs the reset pressure medium line, the piston rod-side leg has a control rod passage and the piston rod-distant leg has the reset pressure medium connection and a sensor line passage.
  • the return pressure medium supply line it is also possible to arrange it running in a thickened wall thickness of the cylinder, and with regard to the arrangement of the actuating rod, it is provided to fasten it by means of an angle piece attached to the free end of the piston rod, from which the actuating rod extends parallel to the piston rod , so that their position transmitter arranged at the free end moves in the area next to the actuating cylinder.
  • the sensors are then also arranged there at a distance from one another which corresponds to the piston end position distance.
  • the sensors in particular in the form of mechanically acting roller pushbuttons, can also be arranged without any problems, the cables of which are guided in the shortest possible way to the end of the actuating cylinder remote from the head piece.
  • the tensioning device is explained in more detail below with reference to the drawing of an exemplary embodiment.
  • the exemplary embodiment shown is a narrow construction, that is to say one in which the actuating cylinder and the piston are, for example, elongated in cross section.
  • the tensioning device consists of an actuating cylinder 3 with a head piece 23 on the piston rod side, and in which the actuating mechanism for the tension arm 24 articulated on the head piece 23 is arranged.
  • the adjusting mechanism and the articulation of the tensioning arm 24 require no further explanation here, since these are elements of a known type. 2
  • this device is now designed such that at the free end 1 of the piston rod 2 parallel to the latter and pointing in the direction of the actuating cylinder 3, an actuating rod 5 provided at the free end with position sensors 4 are arranged.
  • the adjustment path W of the position transmitter 4 on the adjustment rod 5 extends in the area of the actuating cylinder 3, namely parallel to its longitudinal axis 11.
  • the end position sensors 6 are arranged, for which preferred and advantageously mechanically acting roller switches are used.
  • the two pressure medium supply connections 7, 8 are arranged at the end of the actuating cylinder remote from the head piece, so that the pressure medium lines can be guided axially away from the end 9 of the actuating cylinder 3.
  • the line outlets 10 of the end position sensors 6 are arranged outgoing in the axial direction to the longitudinal axis 11 of the actuating cylinder 3 at the free end 9 of the cylinder 3.
  • actuating rod 5 with their associated sensors 6, 6 'and the reset pressure medium connection are arranged on the narrow side 12 of the device.
  • the two connecting flanges 13, 14 of the actuating cylinder 3 are designed to be extended toward the actuating rod side, the flange 13 on the head piece side being provided with an actuating rod penetration 15. Between the two flanges 13, 14 there is a sealed return pressure medium line 16, which establishes the connection to the pressure medium mouth 25 from the pressure medium connection 8 in the flange 14.
  • FIG. 1 it is also possible, according to FIG.
  • a niche is formed to the side next to the actuating cylinder 3, in which the reset pressure medium supply line 16 extends in a well-protected manner and into which the free end of the actuating rod 5 provided with the position transmitter 4 also engages and in the area of which the two sensors 6 are arranged at a distance D from one another which corresponds to that of the piston end position distance.
  • this niche can be provided with a cover without problems, although the niche itself already provides protection for the elements mentioned.
  • the cable or the reset pressure medium connection 8 then run axially out of this niche or the elements forming this niche, so that all supply lines to the device can be connected axially to the end of the actuating cylinder 3 remote from the head piece, to which the other pressure medium connection 7 also extends axially is oriented.
  • the free end of the actuating rod 5 in front of the position transmitter 4 is advantageous provided with an extension 4 ', which is aligned either in the flange 14 or in the leg 19 of the extension 17, a bore 4', in which the extension 4 'can engage.
  • the length of the extension and the depth of the bore are dimensioned such that when the position transmitter 4 contacts the sensor 6, the free end of the extension 4 'is already covered by the bore 4'.
  • a guide and holding groove 29 is provided on the actuating cylinder 3 or on the U-shaped extension piece 17, in which the sensors 6, 6 'moved and can be fixed in the desired position in a suitable manner.
  • the sensor 6 remote from the head piece is not guided directly in the groove 29, but is fastened to an intermediate piece 30 which is guided in the groove 29 and is provided with a projection 27 which projects into the actuating path W of the actuating rod 5. In this projection 27 is in alignment with the extension 4 'an extension guide bore 28.
  • This sensor 6 ⁇ serves to move the piston rod 2 extended in this case with low pressure up to the sensor 6,, which then switches the pressure system to full pressure in order to be able to act fully on the workpiece via the clamping arm 24.
  • the position of the adjustable sensor 6 ⁇ is to be made so that the full pressure is only switched on when the gap between the clamping arm 24 and the workpiece is smaller than a finger thickness. An essential safety requirement for such tensioning devices is thus easily met.
  • valve 6 is retracted in the basic position of the cylinder 3 and is on sensor 6 '.
  • a predetermined pressure is built up via valve 32 and pressure control valve 33 and cylinder 3 closes.
  • the valve 34 switches and the cylinder 3 or the tensioning device is at full system pressure closed.
  • the return stroke can be initiated.
  • the valves 33 and 34 are switched to the basic position.
  • the valve 32 is switched to 35.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Actuator (AREA)
EP88114394A 1987-10-29 1988-09-03 Spannvorrichtung Expired - Lifetime EP0313767B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88114394T ATE62850T1 (de) 1987-10-29 1988-09-03 Spannvorrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8714390U DE8714390U1 (de) 1987-10-29 1987-10-29 Spannvorrichtung
DE8714390U 1987-10-29
DE8804990U DE8804990U1 (de) 1988-04-15 1988-04-15 Spannvorrichtung
DE8804990U 1988-04-15

Publications (2)

Publication Number Publication Date
EP0313767A1 EP0313767A1 (de) 1989-05-03
EP0313767B1 true EP0313767B1 (de) 1991-04-24

Family

ID=25952160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88114394A Expired - Lifetime EP0313767B1 (de) 1987-10-29 1988-09-03 Spannvorrichtung

Country Status (5)

Country Link
US (1) US4923184A (enrdf_load_stackoverflow)
EP (1) EP0313767B1 (enrdf_load_stackoverflow)
JP (1) JPH01125139U (enrdf_load_stackoverflow)
DE (1) DE3862562D1 (enrdf_load_stackoverflow)
ES (1) ES2023238B3 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012003918C5 (de) * 2012-02-28 2017-03-09 Springer Gmbh Antriebsvorrichtung zum Antreiben einer Vorrichtung zum Greifen und/oder Spannen eines Werkstückes umfassend eine Kolben-Zylinder-Einheit mit Druckmittelkanal in der Kolbenstange

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908288U1 (de) * 1989-07-07 1989-09-21 Tünkers, Josef Gerhard, 4030 Ratingen Kniehebelspannvorrichtung für den Karosseriebau
DE9311132U1 (de) * 1993-07-26 1993-09-09 Tünkers Maschinenbau GmbH, 40880 Ratingen Kniehebelspannvorrichtung für den Karosseriebau
US5884903A (en) * 1995-10-30 1999-03-23 Btm Corporation Powered clamp and gauging apparatus
DE19616441C1 (de) * 1996-04-25 1997-06-26 Tuenkers Maschinenbau Gmbh Kniehebelspannvorrichtung für den Karosseriebau
US5875417A (en) * 1996-11-18 1999-02-23 Isi Norgren Inc. Clamp arm position sensing apparatus
ES2152620T3 (es) * 1996-12-17 2001-02-01 Sta Co Mettallerzeugnisse Gmbh Dispositivo de sujecion de palanca acodada con medios indicadores de posicion final.
DE29700981U1 (de) * 1997-01-22 1997-03-13 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Induktive Endstellungsabfrageeinrichtung
DE19751950C1 (de) * 1997-11-24 1999-03-04 Isi International Sa Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
US6557452B1 (en) * 1999-07-16 2003-05-06 Norgren Automotive, Inc. Valve and position control system integrable with clamp
US6412845B1 (en) 2000-07-07 2002-07-02 Btm Corporation Sealed gripper
ATE277721T1 (de) 2001-04-19 2004-10-15 Univer Spa Kniehebelspannvorrichtung
ITMI20012240A1 (it) * 2001-10-25 2003-04-25 Luciano Migliori Dispositivo di bloccaggio con controllo ottico di posizione
US20040112936A1 (en) * 2002-08-29 2004-06-17 Tennessee Rand Co., Inc. Wire clamp
US20050035515A1 (en) * 2003-08-13 2005-02-17 Tennessee Rand Co., Inc. Tube clamp
US7290480B2 (en) * 2005-02-08 2007-11-06 Delaware Capital Formation, Inc. Swing cylinder
EP1967318A1 (en) * 2007-03-06 2008-09-10 COMAU S.p.A. Device for locating and locking in position elements of pressed sheet metal with an auxiliary body having passages for fitting pipes
DE202008009702U1 (de) 2008-07-17 2008-09-25 Tünkers Maschinenbau Gmbh Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
CN101973001B (zh) * 2010-09-10 2012-09-05 安徽省芜湖仪器仪表研究所 一种零件夹紧机构及其使用方法
CN103084887A (zh) * 2012-11-14 2013-05-08 柳州易舟汽车空调有限公司 涡旋盘型线加工夹具
JP6252950B2 (ja) * 2015-03-05 2017-12-27 Smc株式会社 クランプ装置
CN105382728B (zh) * 2015-12-02 2017-04-12 上海君屹工业自动化股份有限公司 一种大翻式工装压具
JP7201475B2 (ja) * 2019-02-26 2023-01-10 トヨタ自動車株式会社 クランプ装置
DE102022115370A1 (de) * 2022-06-21 2023-12-21 Ludwig Ehrhardt Gmbh Spannvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1658962A (en) * 1924-05-10 1928-02-14 Thomas N Aikens Hydraulic shock absorber
US2604759A (en) * 1951-03-20 1952-07-29 Neil V Smith Fluid pressure actuated tool driving and feeding equipment
US3454971A (en) * 1966-07-13 1969-07-15 Dyson & Sons Hold-down fixture
US4183502A (en) * 1978-06-16 1980-01-15 The United States Of America As Represented By The Secretary Of The Navy Hydraulic chain jack automatic latch control system
DE3403961C2 (de) * 1984-02-04 1987-01-29 Josef Gerhard 4030 Ratingen Tünkers Pneumatisch oder hydraulisch betätigbare Kniehebelspannvorrichtung zum Spannen von Karosserieteilen
US4679315A (en) * 1986-01-06 1987-07-14 Combustion Engineering, Inc. Hydraulic tube plug remover
US4736518A (en) * 1986-05-13 1988-04-12 Donaldson Company, Inc. Method and apparatus for construction of crimp seal pleated filter assembly
US4723767A (en) * 1986-08-08 1988-02-09 De-Sta-Co Division, Dover Resources, Inc. Rotary powered linear actuated clamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012003918C5 (de) * 2012-02-28 2017-03-09 Springer Gmbh Antriebsvorrichtung zum Antreiben einer Vorrichtung zum Greifen und/oder Spannen eines Werkstückes umfassend eine Kolben-Zylinder-Einheit mit Druckmittelkanal in der Kolbenstange

Also Published As

Publication number Publication date
JPH01125139U (enrdf_load_stackoverflow) 1989-08-25
EP0313767A1 (de) 1989-05-03
ES2023238B3 (es) 1992-01-01
DE3862562D1 (de) 1991-05-29
US4923184A (en) 1990-05-08

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