EP1281479B1 - Elément de serrage avec coulisseaux à actionnement hydraulique - Google Patents

Elément de serrage avec coulisseaux à actionnement hydraulique Download PDF

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Publication number
EP1281479B1
EP1281479B1 EP02102029.2A EP02102029A EP1281479B1 EP 1281479 B1 EP1281479 B1 EP 1281479B1 EP 02102029 A EP02102029 A EP 02102029A EP 1281479 B1 EP1281479 B1 EP 1281479B1
Authority
EP
European Patent Office
Prior art keywords
slides
workpiece
clamping
housing
piston
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
EP02102029.2A
Other languages
German (de)
English (en)
Other versions
EP1281479A3 (fr
EP1281479A2 (fr
Inventor
Rudolf Kohlert
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.)
Ludwig Ehrhardt GmbH
Original Assignee
Ludwig Ehrhardt 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 Ludwig Ehrhardt GmbH filed Critical Ludwig Ehrhardt GmbH
Publication of EP1281479A2 publication Critical patent/EP1281479A2/fr
Publication of EP1281479A3 publication Critical patent/EP1281479A3/fr
Application granted granted Critical
Publication of EP1281479B1 publication Critical patent/EP1281479B1/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
    • B25B1/00—Vices
    • B25B1/06—Arrangements for positively actuating jaws
    • B25B1/18—Arrangements for positively actuating jaws motor driven, e.g. with fluid drive, with or without provision for manual actuation
    • 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 clamping element for clamping workpieces, which are already accommodated in their position and positioned where a supportive receptacle is required at any point, with the aid of jaws which are mounted on the workpiece approachable and fixable and mounted on two parallel slide , which are slidably guided in guideways.
  • Such a clamping element is made DE 201 00 104 U1 known.
  • clamping elements For clamping workpieces clamping elements are used, which fix the workpiece positioned. Labile and longer workpieces require further clamping units, by means of which they are definitely supported at all critical points. These clamping elements must be applied to the workpiece, after this is already fixed in its position. The introduction of such clamping units must be done so that the workpiece at the points where the clamping units come to rest, is not distorted or deformed. This high demands are placed on such clamping elements.
  • Clamping elements are usually operated hydraulically.
  • the hydraulic pressure is introduced so that the clamping element moves its clamping jaws toward or away from each other.
  • Inconsistencies in the hydraulics or in the friction surfaces, which affect the moving parts, can easily lead to tension of the workpieces.
  • unstable points on a wide range of workpieces should be stabilized with one element.
  • the invention is thus a clamping element with two flexible movable, parallel sliders on which the jaws are placed.
  • the clamping jaws are positionally flexible in the manner of tongs to the workpiece.
  • two equally large opposing contact forces act on two opposite points on the workpiece.
  • the slide 2 u. 3 are provided in the lower region of their contact surfaces with a dovetail-shaped recess 6.
  • the jaws 7 u. 8 attached on the sliders 2 u. 3, the jaws 7 u. 8 attached. These clamping jaws are interchangeable and thus adaptable to the respective workpiece. They can be fixed by means of screws 13 and 10 nuts.
  • the slide 2 u. 3 are hydraulically driven, via the plunger 9 u. 10 for clamping and by means of plunger 11 u. 12 to relax.
  • the plunger 9 u. 10 are in the piston plates 15; 16 arranged so that the force emanating from them directly on the end faces 17; 18, the slider 2; 3 is initiated in this.
  • the line of action of the plunger 9, 10 for the slides 2, 3 lies in the guide surfaces within the recesses 4, 5. It is thus a pure longitudinal force introduced without lateral moments, thereby the friction force in the guide surfaces is significantly reduced.
  • the slides run smoothly and evenly in their guide surfaces and transmit the force directly to the clamping point 19 and the workpiece 20 without deforming them.
  • the result is the workpiece 20 equal oppositely directed forces according to the principle action equal reaction.
  • the resulting load moment - clamping force x lever arm a - is determined by the guide surfaces within the recess 4; 5 recorded, wherein the recess 4; 5 corresponds with their guide surfaces in about the case length. These relatively large guide surfaces help to keep the friction forces as low as possible.
  • a piston 22 is provided for fixing below the recess 4; This piston 22 is driven separately. It is provided at its head end with a dovetail-shaped wedge piece 23, which is fitted exactly in a recessed in the slide 2, 3 recess 6, in such a way that in the relaxed state, the slide 2; 3 slide past the wedge piece 23 without contact. The slide is guided at its contact surfaces in the recesses 6. The piston 22 is acted upon via the hydraulic connection 25. Its return takes place by means of associated plate springs 24. The provision can be made hydraulically if necessary.
  • the piston 22 is acted upon by hydraulic connection 25.
  • This piston is pulled down into the housing 1.
  • the trained as a wedge piece 23 head is pulled down in the recess 6 and this presses on the side surfaces of the recess 6.
  • the clamping element is set so that it remains independent of external forces as well as pressure drop in the hydraulic in its position and thus acts self-locking, this is effected by the configuration of the wedge piece 23.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Claims (4)

  1. Élément de serrage à serrer des pièces (20), qui sont reçus déjà en leur position positionnée et dans lesquelles une reprise appuyant est requise à n'importe quels endroits, comprenant un carter (1) et des mâchoires de serrage (7, 8) qui sont aptes à être approché à ladite pièce (20) et fixé et qui sont également placées sur deux curseurs (2 ; 3) guidés en parallèle, qui sont guidés de manière glissante dans des voies de guidage,
    caractérisé en ce
    a) que lesdites voies de guidage sont encastrées dans des évidements (4 ; 5) dudit carter (1),
    b) que l'introduction de la force pour le mouvement desdits curseurs se fait via des pistons plongeurs (9 ; 10), qui agissent sur lesdites faces (17 ; 18) desdits curseurs en constituant ainsi un court levier entre l'introduction de la force et le point d'effet de la force,
    c) que lesdits pistons plongeurs (9 ; 10) sont disposés dans les plaques de piston (15 ; 16) dudit carter (1) et soumis à l'application via le même connecteur hydraulique,
    d) qu'un piston (22) est inséré dans ledit carter (1) au-dessous desdits curseurs (2 ; 3), qui agit en sens orthogonal par rapport au niveau desdits curseurs,
    e) que lesdits curseurs (2 ; 3) sont dotés d'un évidement (6) respectif, qui s'étend en coin,
    f) que ledit piston (22) este pourvu d'une pièce en coin (23) à sa tête, qui est guidé de façon glissante dans ledit évidement (6) desdits curseurs,
    g) qu'en état serré, lesdits curseurs (2 ;3) sont apte à être arrêté par leurs mâchoires de serrage (7 ; 8) portant contre ladite pièce, par application d'une pression audit piston (22), en tirant ledit piston en bas dans ledit carter (1) et ainsi tirant ladite pièce en coin (23) par sa tête dans lesdits évidements (6), en écartant lesdits curseurs et en pressant les curseurs dans les surfaces de guidage (27 ; 28) desdits évidements 4 ; 5).
  2. Élément de serrage selon la revendication 1, caractérisé en ce que lesdits curseurs (2 ; 3) sont dotés des mâchoires de serrage (7 ; 8) échangeables et place ables.
  3. Élément de serrage selon la revendication 1 ou 2, caractérisé en ce que ladite pièce en coin (23) est configurée d'une telle façon, que lesdits curseurs (2 ; 3) soient arrêtés de manière autobloquante après le serrage.
  4. Élément de serrage selon une quelconque des revendications 1 à 3, caractérisé en ce que lesdits curseurs (2 ; 3) avec leurs mâchoires de serrage (7 ; 8) sont aptes à être approché à ladite pièce par une force agissante uniformément sur les curseurs, en laissant une force uniforme agir des deux côtes sur ladite pièce, à cette force arrêtant ladite pièce en sa position inchangée.
EP02102029.2A 2001-08-01 2002-07-11 Elément de serrage avec coulisseaux à actionnement hydraulique Expired - Lifetime EP1281479B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10137686 2001-08-01
DE10137686A DE10137686A1 (de) 2001-08-01 2001-08-01 Spannelement

Publications (3)

Publication Number Publication Date
EP1281479A2 EP1281479A2 (fr) 2003-02-05
EP1281479A3 EP1281479A3 (fr) 2009-03-18
EP1281479B1 true EP1281479B1 (fr) 2016-09-07

Family

ID=7693991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02102029.2A Expired - Lifetime EP1281479B1 (fr) 2001-08-01 2002-07-11 Elément de serrage avec coulisseaux à actionnement hydraulique

Country Status (3)

Country Link
US (1) US6832755B2 (fr)
EP (1) EP1281479B1 (fr)
DE (1) DE10137686A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10137686A1 (de) * 2001-08-01 2003-02-13 Rudolf Kohlert Spannelement
CN102848265A (zh) * 2012-10-09 2013-01-02 江苏润孚机械轧辊制造有限公司 铣床万能支架
CN102975054A (zh) * 2013-01-04 2013-03-20 江苏天宏自动化科技有限公司 一种锅式定位压紧机构
CN107471231B (zh) * 2017-08-02 2024-02-13 宁夏巨能机器人股份有限公司 一种用于夹取异形工件的机器人手爪装置
DE202020000509U1 (de) 2020-02-07 2020-03-12 Christof Steubing Spann-, Greif-, Positionier- und Haltevorrichtung
US11759914B2 (en) 2020-08-06 2023-09-19 Mate Precision Technologies Inc. Vise assembly
WO2022032148A1 (fr) 2020-08-06 2022-02-10 Mate Precision Technologies Inc. Ensemble base d'usinage
CN114714390A (zh) * 2022-04-27 2022-07-08 斯派科智能科技(东莞)有限公司 气动夹爪

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1736363A (en) * 1927-11-05 1929-11-19 Tabor Mfg Co Molding-machine clamp
US1812959A (en) * 1928-07-23 1931-07-07 Whitehead & Kales Co Apparatus for making wheel spiders
US2679177A (en) * 1953-05-13 1954-05-25 Gepfert Franklin Gahl Precision vise of the double-acting type
US4257513A (en) * 1979-04-26 1981-03-24 Siarto Machine And Tool Co., Inc. Machine tool
US4865375A (en) * 1988-05-31 1989-09-12 Amp Incorporated Gripper head
JPH0624574Y2 (ja) * 1988-11-09 1994-06-29 日本精工株式会社 クランプ装置付リニアガイド装置
DE19650431B4 (de) * 1996-12-05 2004-04-08 Schunk Gmbh & Co. Kg Fabrik Für Spann- Und Greifwerkzeuge Greifvorrichtung
DE19902596A1 (de) * 1999-01-23 2000-08-24 Kirsching Franz Integrierte Klemmung für Linearführungen
IT1314646B1 (it) * 2000-02-11 2002-12-31 Gimatic Spa Sistema di guida delle griffe in pinze azionate da un fluido.
DE20100104U1 (de) * 2001-01-04 2001-04-05 Graf, Stephan, Dipl.-Ing. (FH), 79106 Freiburg Parallelgreifer mit entkoppelten Greiferbacken
DE10137686A1 (de) * 2001-08-01 2003-02-13 Rudolf Kohlert Spannelement

Also Published As

Publication number Publication date
US20030025260A1 (en) 2003-02-06
DE10137686A1 (de) 2003-02-13
EP1281479A3 (fr) 2009-03-18
US6832755B2 (en) 2004-12-21
EP1281479A2 (fr) 2003-02-05

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