EP0145631A1 - Pneumatische Spanneinrichtung mit Kniehebel - Google Patents

Pneumatische Spanneinrichtung mit Kniehebel Download PDF

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Publication number
EP0145631A1
EP0145631A1 EP84440061A EP84440061A EP0145631A1 EP 0145631 A1 EP0145631 A1 EP 0145631A1 EP 84440061 A EP84440061 A EP 84440061A EP 84440061 A EP84440061 A EP 84440061A EP 0145631 A1 EP0145631 A1 EP 0145631A1
Authority
EP
European Patent Office
Prior art keywords
rails
bearing face
shell
clamping
elastically deformable
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.)
Withdrawn
Application number
EP84440061A
Other languages
English (en)
French (fr)
Inventor
Jean Michel Baills
Georges Cretien
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.)
Etudes Techniques-Franche Comte-Alsace Etfa Sarl
Original Assignee
Etudes Techniques-Franche Comte-Alsace Etfa Sarl
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9294870&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0145631(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Etudes Techniques-Franche Comte-Alsace Etfa Sarl filed Critical Etudes Techniques-Franche Comte-Alsace Etfa Sarl
Publication of EP0145631A1 publication Critical patent/EP0145631A1/de
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to the field of clamping parts by clamping, in particular sheet metal parts to be assembled by welding, and relates to a pneumatic toggle clamping device.
  • clamps are essentially constituted by a hydraulic or pneumatic cylinder acting by means of a yoke on a connecting rod attached to one axis of a clamping arm, the yoke being guided in a body integral with the cylinder body and containing the connecting rod assembly.
  • the third axis is generally replaced by the contact surface, either of the yoke with the body, or of one or more guide rollers integral with the yoke with the body, so that the passage of the alignment position requires the implementation of extremely significant efforts tending to deform the guide surface of the yoke as well as cause rapid wear of the different bearings of the crankshaft, so that the precision of the tightening, in the event of a variation in thickness of the sheets to be tightened, and the maintenance of '' A constant clamping force is practically impossible to ensure in the long term.
  • the loosening of the clamping arm is often difficult because of the blocking forces to be overcome, requiring an oversizing of the actuating cylinder resulting in a corresponding increase in the cost price.
  • the present invention aims to overcome these drawbacks.
  • a pneumatic toggle clamping device essentially constituted by a clamping body in two half-shells assembled together in which is slidably mounted a yoke actuating a clamping arm by means of a lever, and by a jack which is connected to the clamping body, and whose rod is integral with the yoke, which is guided in the clamping body, against a bearing face of the latter by means of an intermediate element guide, characterized in that the intermediate guide element is elastically deformable during tightening, in particular when the alignment position is exceeded.
  • the intermediate guide element consists of two rails each fixed on the bearing face of a half-shell of the clamping body with the interposition of an elastically deformable part or springs of compression.
  • the pneumatic toggle clamping device which is essentially constituted by a clamping body 1, formed by two half shells the assembled together, and in which is slidably mounted a yoke 2, which actuates a clamping arm 3 by means of a lever 4, and by a jack 5 secured to the clamping body 1, and whose rod 6 is connected to the yoke 2, which is guided in the clamping body 1 against a bearing face 7 of the latter by means of an intermediate guide element 8, is characterized in that said intermediate guide element 8 is elastically deformable during tightening, in particular when exceeding the alignment position.
  • the element 8 is advantageously constituted by two rails 9 each fixed on the bearing face 7 of a half-shell 1 'of the body 1 with the interposition of a piece 10 which is elastically deformable (FIG. 2).
  • This part 10 is preferably made of natural or synthetic rubber, or any other material having elastic deformation properties. It is also possible to replace the part 10 by compression springs housed, on the one hand, in cells provided for this purpose on the bearing face 7 of the half-shells 1 'or on the underside of the rails 9 and resting, on the other hand, by their other end on the underside of the rails 9 or on the bearing face 7.
  • the rails 9 are advantageously U-section rails, in which the ends of the connecting pin 11 are guided between the yoke 2 and the lever 4 for actuating the clamping arm 3, and the part 10 is housed, preferably, in a longitudinal recess 12 of the bearing face 7 of each half-shell 1a (FIG. 2).
  • the element 8 can also consist solely of rails made of an elastically deformable material and with high surface resistance, such as spring steel, or a composite material, for example based on carbon fibers, these rails then resting only by their two ends on pads of the bearing face 7 of each half-shells 1 '.
  • the element 8 is formed in the form of stacks of spring blades bearing at its ends on pads of the bearing face 7 of each half-shell 1 ' , and on which the corresponding ends of the axis 11 slide or roll.
  • the element 8 in the form of rails embedded at their end facing the jack 5, or pivotally mounted at this end, and bearing at their other end on an elastically deformable element or on a compression spring secured to the bearing face 7 of each half-shell 1 '.
EP84440061A 1983-12-02 1984-11-30 Pneumatische Spanneinrichtung mit Kniehebel Withdrawn EP0145631A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8319443A FR2555926B1 (fr) 1983-12-02 1983-12-02 Dispositif de serrage pneumatique a genouillere
FR8319443 1983-12-02

Publications (1)

Publication Number Publication Date
EP0145631A1 true EP0145631A1 (de) 1985-06-19

Family

ID=9294870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84440061A Withdrawn EP0145631A1 (de) 1983-12-02 1984-11-30 Pneumatische Spanneinrichtung mit Kniehebel

Country Status (3)

Country Link
US (1) US4591138A (de)
EP (1) EP0145631A1 (de)
FR (1) FR2555926B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216710A1 (de) * 1985-09-24 1987-04-01 Fabrice Goussu Mehrkopfspannvorrichtung mit einer einzelnen Fernbetätigung
FR2599652A2 (fr) * 1986-06-09 1987-12-11 Fabrice Goussu Perfectionnements aux tetes de bridage a effort constant et a compensation d'usure automatique
EP0370914A1 (de) * 1988-11-25 1990-05-30 POLYMATIC Société Anonyme dite: Spannkopf mit Spielausgleich
DE4236670A1 (de) * 1992-10-30 1994-05-05 Sta Co Mettallerzeugnisse Gmbh Klemmspannvorrichtung
CN105033856A (zh) * 2015-07-25 2015-11-11 安徽卡塔门窗有限公司 一种门窗框体打磨用夹具

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171001A (en) * 1987-05-27 1992-12-15 Btm Corporation Sealed power clamp
FR2630953B1 (fr) * 1988-05-06 1991-04-05 Genus Int Dispositif de bridage pour plaques ou profiles l'un contre l'autre
US5165670A (en) * 1991-10-16 1992-11-24 Btm Corporation Retracting power clamp
US6115898A (en) * 1995-06-06 2000-09-12 Btm Corporation Force multiplying apparatus for clamping a workpiece and forming a joint therein
US5884903A (en) * 1995-10-30 1999-03-23 Btm Corporation Powered clamp and gauging apparatus
US5871250A (en) * 1997-03-31 1999-02-16 Btm Corporation Sealed straight line gripper
DE19732600C2 (de) * 1997-07-29 2000-03-30 Benteler Werke Ag Bauteilspanner
US6059277A (en) * 1998-05-05 2000-05-09 Btm Corporation Retracting power clamp
US6412845B1 (en) 2000-07-07 2002-07-02 Btm Corporation Sealed gripper
US6450082B1 (en) 2000-12-18 2002-09-17 Btm Corporation Shot pin
US8459626B2 (en) 2010-05-28 2013-06-11 Btm Corporation Pin clamp

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2075670A5 (de) * 1970-01-19 1971-10-08 Blatt Leland
FR2340798A1 (fr) * 1976-02-13 1977-09-09 Polymatic Sa Tete de bridage irreversible a attelage flottant et demontage rapide
FR2484310A1 (fr) * 1980-06-14 1981-12-18 Sta Co Mettallerzeugnisse Gmbh Dispositif de serrage a genouillere, notamment pour serrer des elements de carrosserie
US4331326A (en) * 1980-07-28 1982-05-25 Strouss Richard W Stud mounted toggle clamp with a secondary release mechanism
GB2103119A (en) * 1981-08-05 1983-02-16 Tuenkers Maschinenbau Gmbh Pressure-medium-operable bell-crank lever clamping device having a resilient spring link and a releasably secured clamping arm

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938852A (en) * 1973-09-06 1976-02-17 The General Tire & Rubber Company Elastomeric structural bearing
US4392642A (en) * 1980-12-22 1983-07-12 Anorad Corporation Workpiece positioning table with air bearing pads
US4458889A (en) * 1982-09-29 1984-07-10 Dover Corporation (De-Sta-Co. Div.) Locking power clamp
US4529255A (en) * 1983-06-08 1985-07-16 Cincinnati Milacron Inc. Machine tool way damper

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2075670A5 (de) * 1970-01-19 1971-10-08 Blatt Leland
FR2340798A1 (fr) * 1976-02-13 1977-09-09 Polymatic Sa Tete de bridage irreversible a attelage flottant et demontage rapide
FR2484310A1 (fr) * 1980-06-14 1981-12-18 Sta Co Mettallerzeugnisse Gmbh Dispositif de serrage a genouillere, notamment pour serrer des elements de carrosserie
US4331326A (en) * 1980-07-28 1982-05-25 Strouss Richard W Stud mounted toggle clamp with a secondary release mechanism
GB2103119A (en) * 1981-08-05 1983-02-16 Tuenkers Maschinenbau Gmbh Pressure-medium-operable bell-crank lever clamping device having a resilient spring link and a releasably secured clamping arm

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216710A1 (de) * 1985-09-24 1987-04-01 Fabrice Goussu Mehrkopfspannvorrichtung mit einer einzelnen Fernbetätigung
FR2599652A2 (fr) * 1986-06-09 1987-12-11 Fabrice Goussu Perfectionnements aux tetes de bridage a effort constant et a compensation d'usure automatique
EP0370914A1 (de) * 1988-11-25 1990-05-30 POLYMATIC Société Anonyme dite: Spannkopf mit Spielausgleich
FR2639569A1 (fr) * 1988-11-25 1990-06-01 Polymatic Sa Tete de bridage a rattrapage de jeux
DE4236670A1 (de) * 1992-10-30 1994-05-05 Sta Co Mettallerzeugnisse Gmbh Klemmspannvorrichtung
CN105033856A (zh) * 2015-07-25 2015-11-11 安徽卡塔门窗有限公司 一种门窗框体打磨用夹具
CN105033856B (zh) * 2015-07-25 2017-08-29 安徽卡塔门窗有限公司 一种门窗框体打磨用夹具

Also Published As

Publication number Publication date
FR2555926A1 (fr) 1985-06-07
US4591138A (en) 1986-05-27
FR2555926B1 (fr) 1986-09-12

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Inventor name: BAILLS, JEAN MICHEL

Inventor name: CRETIEN, GEORGES