EP0917932B1 - Dispositif de serrage à genouillère, en particulier pour la construction en carrosserie dans l'industrie automobile - Google Patents

Dispositif de serrage à genouillère, en particulier pour la construction en carrosserie dans l'industrie automobile Download PDF

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Publication number
EP0917932B1
EP0917932B1 EP98119088A EP98119088A EP0917932B1 EP 0917932 B1 EP0917932 B1 EP 0917932B1 EP 98119088 A EP98119088 A EP 98119088A EP 98119088 A EP98119088 A EP 98119088A EP 0917932 B1 EP0917932 B1 EP 0917932B1
Authority
EP
European Patent Office
Prior art keywords
toggle lever
grip head
toggle
lever clamp
support plate
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
EP98119088A
Other languages
German (de)
English (en)
Other versions
EP0917932A1 (fr
Inventor
Josef-Gerhard Tünkers
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.)
I S I International SA
Original Assignee
I S I International SA
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 I S I International SA filed Critical I S I International SA
Publication of EP0917932A1 publication Critical patent/EP0917932A1/fr
Application granted granted Critical
Publication of EP0917932B1 publication Critical patent/EP0917932B1/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
    • B25B5/12—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
    • B25B5/16—Details, e.g. jaws, jaw attachments

Definitions

  • the invention relates to a toggle lever tensioning device, in particular for use in body construction in the automotive industry.
  • Toggle clamps for use in body construction in the automotive industry are already known in various constructions. Some such toggle clamps are for example in the German utility model 93 11 132 U1 and shown and described in EP 0 636 449 B1. Especially Bodywork in the automotive industry strives to save weight through the use of light metals. That's why you go increasingly in addition, the housing, i.e. clamping head and cylinder, of toggle lever clamping devices no longer - as before - from steel, but from light metal alloys, especially aluminum alloys. Such Lighter toggle clamps are used especially in mobile systems used. Because when clamping, very large reaction forces from the clamping head must be included, exists when using light metal the risk of deformation of the housing walls, especially after some operating time, so that no precise clamping position and no defined Clamping forces are more to be transferred.
  • a toggle lever tensioning device is also included a clamping head and with an adjoining one in axial extension Cylinder previously known, in which presumably an alternating on both sides piston to be acted upon by pressure medium pressure is sealingly guided, the cylinder and a cavity with a piston rod of the clamping head extends axially, with at the free end of the piston rod a toggle joint assembly is attached to one on one Side of the clamping head arranged clamping arm or one on both end sections a fork-shaped clamping arm mounted on an axle is coupled, the toggle joint arrangement in the clamping head on one axis fixed to the housing.
  • a kind of support plate is also provided, which is arranged resiliently or resiliently.
  • the invention has for its object a toggle lever tensioning device, especially for use in body construction in the motor vehicle industry, in which also when using light metal or light metal alloys for the clamping head and / or the cylinder and z. B. despite the arrangement of only one clamping arm on one side of the clamping head and therefore less favorable Force transmission does not lead to harmful deformations on the clamping head or its storage can come, the construction for the radial and Thrust bearing should be kept simple.
  • the housing-fixed pivot axis of the toggle joint arrangement is which also the z. B. drives one-sided clamping arm, axially and radially supported by the same rolling elements, so that through one and the same Rolling element bearings provide radial and axial mounting of the housing-fixed Swivel axis is reached.
  • the axially and radially occurring Power components reliably and without deformation in the walls of the Clamping head directed, and without it to tilt or to one
  • the toggle joint assembly becomes stiff.
  • Support plate and Fixed stop can be made of hardened steel, if necessary also Ceramic material, exist and be designed accordingly large, so that the surface pressure can be kept low in this area.
  • Ceramic material it does happen this does not result in damaging deformations of the clamping head walls.
  • the support plate is arranged in a housing wall of the clamping head and held by a screw screwed into the support plate from the outside.
  • Claim 6 describes a toggle lever tensioning device in which the fixed stop can also be locked by one or more screws which act on the fixed stop from the outside, optionally also adjustable by screws or the like. This fixed stop enables precise tensioner adjustment, so that a certain amount of wear that occurs after some time can be compensated for by adjustment.
  • Reference number 1 denotes a cylinder, in which alternately on both sides a z. B. piston 2 to be acted upon by compressed air and is performed sealing.
  • a piston rod 3 is connected, which at its end with a toggle joint arrangement 4 is provided.
  • This toggle joint arrangement 4 has, inter alia, a swivel bracket 5 which is around a toggle joint pin 7 can be pivoted in the direction A or B by a limited amount is.
  • the swivel bracket 5 is through a hole in the toggle joint pin 7 pivotally arranged and has at its other end a further hole through which a hinge pin 8 engages the two end portions of the link plates 9 and 10 are also pivotable are arranged with one hole each.
  • These link plates 9 and 10 are integrally connected to one another.
  • Clamping head 12 connects to cylinder 1, the parts of the piston rod 3 and the toggle joint arrangement 4 with its pivot axes 7, 8 takes up and in the wall of an axis 11 is mounted stationary.
  • the axis 11 is in the embodiments shown in the drawing led out from one side of the housing of the clamping head 12 and has the illustrated embodiment on one side a tension arm 13.
  • the axis 11 can be removed from the housing at both end sections of the chuck 12 to be led out and on these two end sections carry a fork-shaped clamping arm that has a central or has off-center clamping part.
  • the axis 11 is through at both ends each have a separate radial bearing 14 and an axial bearing 15. On the opposite A similar arrangement is made on the side of the axis 11.
  • the bearings 14 and 15 are designed as roller bearings, in the present case as needle bearings. so that on the one hand high forces in the axial and radial direction with large Ease of movement can be included.
  • FIG. 1 there is a support plate in the area of the top dead center position 16 arranged from hardened steel or a suitable ceramic material, which is held by at least one screw 17.
  • the screw 17 can be actuated by an externally accessible bore in the clamping head 12 and engages in the support plate 16 to hold it. In the field of the toggle joint arrangement 4 is supported against this, so that wall parts of the clamping head 12 cannot be deformed.
  • a fixed stop 18 in the form of a Plate provided, also by at least one screw 19 or the like is supported.
  • the fixed stop 18 serves for an exact tension adjustment and can also be made of hardened steel or a ceramic Material.
  • the screw 19 or the like can be adjusted and setting the fixed stop 18 enable.
  • This embodiment differs differs from the above-described embodiment in that the support plate 16 against a spring element 20, for example by one or more disc springs, is arranged resiliently. In this way, the support plate 16 dodge something so that when the top dead center is reached the toggle joint literally z. B. clicks into place. By the screw 17, the bias of the spring element 20 infinitely adjust and lock.
  • - disc springs can also form one or more compression springs made of helical compression springs or a polyurethane block designed as a plastic block form the spring element 20. In this case the plastic block pre-pressed to largely eliminate hysteresis and to to achieve the required elasticity and shore hardness.
  • Both by the support plate 16 and by the fixed stop 18 can determine the exact angular position of the toggle joint at which the predetermined Tension is achieved in the area of top dead center. Moreover wear and / or tolerances are compensated.
  • Rolling elements 21 arranged at an even angular distance from one another are provided.
  • These rolling elements are in the form of barrels or cylindrical Rolling bodies formed.
  • the rolling elements 21 engage in a formally adapted Recess 22 in the wall of the clamping head 12.
  • This recess can have a radial depression in the relevant wall of the clamping head Be 12. This forms the radial bearing of the axis 11.
  • the Rolling elements 21 lie with their outwardly facing end faces 23 a collar of the recess 22 or the like provided here.
  • the rolling elements can not only on their in the recess 22nd rolling surfaces can be slightly barrel-shaped or spherical, but also on their faces. This is necessary for the functioning as However, axial and radial bearings are not essential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Mechanical Control Devices (AREA)

Claims (13)

  1. Dispositif de serrage à genouillère destiné en particulier à une utilisation dans la construction de carrosseries automobiles, comportant une tête de serrage (12) à laquelle se raccorde un cylindre (1) qui en constitue le prolongement axial, dans lequel un piston (2), à mettre alternativement des deux côtés sous la pression d'un fluide, de préférence de l'air comprimé, se déplace, guidé longitudinalement en assurant l'étanchéité, et dont la tige de piston (3) traverse axialement le cylindre (1) et un espace creux de la tête de serrage (12), une articulation à genouillère (4) étant fixée sur l'extrémité libre de la tige de piston (3), couplée à un bras de serrage (13) agencé sur un côté de la tête de serrage (12) ou à un bras de serrage en fourche agencé sur l'une des deux sections d'extrémité d'un axe (11), l'articulation à genouillère (4) étant agencée dans la tête de serrage (12) sur un axe de boítier fixe (11), une butée étant établie pour le bras de serrage sur le boítier dans la position de serrage, caractérisé en ce que des corps rotatifs (21) sont agencés sur la section longitudinale correspondante de l'axe (11), autour de la circonférence de celui-ci, de préférence à un espacement angulaire régulier, s'engageant dans un évidement (22) de forme adaptée dans la paroi de la tête de serrage (12) et établissant ainsi le support radial de l'axe (11), tout en reposant avec leurs côtés frontaux (23) orientés respectivement vers l'extérieur contre un rebord de l'évidement (22) ou un élément similaire, et reposant avec leur côté frontal diamétralement opposé (24) contre la paroi latérale (25 ou 26) de la bride d'articulation respective (9 ou 10), orientée vers la section longitudinale correspondante de l'axe (11), établissant ainsi le palier axial, une plaque de support (16), composée d'acier ou de céramique, supportant l'articulation à genouillère (4) dans la région du point mort haut étant agencée sur le côté de la tête de serrage (12) opposé à l'axe de boítier fixe (11), dans la région du point mort.
  2. Dispositif de serrage à genouillère selon la revendication 1, caractérisé en ce que les corps rotatifs (21) sont constitués par des tonneaux.
  3. Dispositif de serrage à genouillère selon la revendication 1, caractérisé en ce que les corps rotatifs (21) sont cylindriques.
  4. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications suivantes, caractérisé en ce que les corps rotatifs (21) ont une forme légèrement bombée ou convexe au niveau de leurs côtés frontaux.
  5. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications suivantes, caractérisé en ce que la plaque de support (16) est agencée dans un évidement de la tête de serrage (12) et retenue de l'extérieur par au moins une vis (17) permettant son ajustement et son blocage.
  6. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications suivantes, caractérisé en ce qu'une butée fixe (18) composée d'acier, plus spécifiquement d'acier trempé ou de céramique ou d'un matériau similaire, servant au réglage précis du serrage et coopérant également avec l'articulation à genouillère (4) est agencée sur le côté de la tête de serrage (12) opposé à la plaque de support (16), la butée fixe (18) étant supportée sur la paroi interne de la tête de serrage (12) et étant retenu par une vis accessible de l'extérieur (19), permettant de préférence son ajustement et son blocage.
  7. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications suivantes, caractérisé en ce que la plaque de support (16) est agencée de manière élastique ou de manière à permettre sa déformation élastique.
  8. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications suivantes, caractérisé en ce que la plaque de support (16) est supportée contre un élément élastique (20), pouvant comporter une tension de ressort préréglable.
  9. Dispositif de serrage à genouillère selon la revendication 8, caractérisé en ce que l'élément élastique (20) est constitué par au moins un ressort à disques, de préférence un groupe de ressorts à disques.
  10. Dispositif de serrage à genouillère selon les revendications 8 ou 9, caractérisé en ce que l'élément élastique (20) est composé de plastique.
  11. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications suivantes, caractérisé en ce que la tête de serrage (12) et le cylindre (1) sont composés d'un alliage léger, en particulier d'un alliage d'aluminium.
  12. Dispositif de serrage à genouillère selon la revendication 1 ou selon l'une des revendications 2 à 10, caractérisé en ce que la tête de serrage (12) et le cylindre (1) sont composés d'acier.
  13. Dispositif de serrage à genouillère selon la revendication 1, caractérisé en ce que les corps rotatifs (21) ont une forme conique.
EP98119088A 1997-11-24 1998-10-09 Dispositif de serrage à genouillère, en particulier pour la construction en carrosserie dans l'industrie automobile Expired - Lifetime EP0917932B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19751950 1997-11-24
DE19751950A DE19751950C1 (de) 1997-11-24 1997-11-24 Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie

Publications (2)

Publication Number Publication Date
EP0917932A1 EP0917932A1 (fr) 1999-05-26
EP0917932B1 true EP0917932B1 (fr) 2003-02-19

Family

ID=7849619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98119088A Expired - Lifetime EP0917932B1 (fr) 1997-11-24 1998-10-09 Dispositif de serrage à genouillère, en particulier pour la construction en carrosserie dans l'industrie automobile

Country Status (5)

Country Link
US (1) US6076816A (fr)
EP (1) EP0917932B1 (fr)
AT (1) ATE232773T1 (fr)
DE (2) DE19751950C1 (fr)
ES (1) ES2193458T3 (fr)

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JP3683447B2 (ja) * 1999-10-15 2005-08-17 Ｓｍｃ株式会社 クランプ装置
US6557841B2 (en) * 2001-06-26 2003-05-06 Norgren Automotive, Inc. Over-center power clamp toggle mechanism
EP1179394A3 (fr) * 2000-08-03 2003-08-27 Norgren Automotive Inc. Dispositif motorisé de serrage autobloquant avec mécanisme à genouillère
US6565074B1 (en) * 2001-06-26 2003-05-20 Norgren Automotive, Inc. Rotary clamp having an adjustable pre-stop
ITMI20020683A1 (it) 2002-04-02 2003-10-02 Luciano Migliori Dispositivo di pinzatura per saldature laser
US6988440B2 (en) * 2002-07-18 2006-01-24 Phd, Inc. Rotary actuator assembly
US7815176B2 (en) 2003-09-11 2010-10-19 Phd, Inc. Lock mechanism for pin clamp assembly
DE102004007468A1 (de) * 2004-02-13 2005-09-01 De-Sta-Co Metallerzeugnisse Gmbh Spannvorrichtung
US7516948B2 (en) * 2004-04-02 2009-04-14 Phd, Inc. Pin clamp accessories
US7182326B2 (en) * 2004-04-02 2007-02-27 Phd, Inc. Pin clamp
US7448607B2 (en) * 2004-12-15 2008-11-11 Phd, Inc. Pin clamp assembly
US20070267795A1 (en) * 2006-02-06 2007-11-22 Parag Patwardhan Pin clamp transfer assembly and method of transferring a workpiece
WO2008157698A2 (fr) 2007-06-19 2008-12-24 Phd, Inc. Ensemble pince broche
WO2009155261A1 (fr) * 2008-06-18 2009-12-23 Phd, Inc. Pince à broche à enlèvement
DE102011110129A1 (de) * 2011-08-15 2013-02-21 De-Sta-Co Europe Gmbh Betätigungsvorrichtung
ITTO20120106A1 (it) * 2012-02-08 2013-08-09 Vep Automation Srl Apparecchiatura di bloccaggio di pezzi, particolarmente di fogli di lamiera
JP6997978B2 (ja) * 2018-10-05 2022-01-18 Smc株式会社 クランプ装置
CN109531206A (zh) * 2018-12-28 2019-03-29 佛山市普拉迪数控科技有限公司 一种行李架加工设备
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Also Published As

Publication number Publication date
ATE232773T1 (de) 2003-03-15
ES2193458T3 (es) 2003-11-01
DE19751950C1 (de) 1999-03-04
US6076816A (en) 2000-06-20
EP0917932A1 (fr) 1999-05-26
DE59807238D1 (de) 2003-03-27

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