EP1824641B1 - Element de serrage de pieces, notamment un etau - Google Patents

Element de serrage de pieces, notamment un etau Download PDF

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Publication number
EP1824641B1
EP1824641B1 EP05817441A EP05817441A EP1824641B1 EP 1824641 B1 EP1824641 B1 EP 1824641B1 EP 05817441 A EP05817441 A EP 05817441A EP 05817441 A EP05817441 A EP 05817441A EP 1824641 B1 EP1824641 B1 EP 1824641B1
Authority
EP
European Patent Office
Prior art keywords
clamping
carriage bed
jaw
pressure
clamping element
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.)
Not-in-force
Application number
EP05817441A
Other languages
German (de)
English (en)
Other versions
EP1824641A1 (fr
Inventor
Andreas SCHÄR
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.)
Promero SA
Original Assignee
Promero 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 Promero SA filed Critical Promero SA
Priority to PL05817441T priority Critical patent/PL1824641T3/pl
Publication of EP1824641A1 publication Critical patent/EP1824641A1/fr
Application granted granted Critical
Publication of EP1824641B1 publication Critical patent/EP1824641B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2431—Construction of the jaws the whole jaw being pivotable around an axis perpendicular to the actioning direction of the vice
    • B25B1/2442—Construction of the jaws the whole jaw being pivotable around an axis perpendicular to the actioning direction of the vice around a horizontal axis
    • 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
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2473—Construction of the jaws with pull-down action on the workpiece

Definitions

  • the invention relates to a clamping element for workpieces, in particular vise, with a first clamping jaw and a second clamping jaw, which are mounted on a carriage bed according to the preamble of the independent claim 1, which is known from FR 2559085 is known.
  • the problem is based on creating a tensioning element, in particular a vice, in which a bending moment is avoided on the carriage bed due to the design.
  • the resultant forces resulting from the clamping forces acting on the clamping jaws are forces introduced by the clamping jaws into the carriage bed in the plane of the neutral fiber of the carriage bed.
  • the introduction of force into the carriage bed according to the invention can be achieved according to the invention in that the first clamping jaw and / or second clamping jaw are supported by a respective hinge pin on a carriage bed, wherein holes for the hinge pins are arranged in a neutral fiber of the carriage bed.
  • the actuator exerts tensile or compressive forces on the jaws.
  • the clamping jaws are preferably designed as two-armed lever, wherein in each case one lever arm, a clamping surface is associated and the other lever arm acts on a push rod.
  • the tensioning device is duplicated as it were on a side of the neutral fiber opposite the workpiece, except that it acts on the push rod instead of the workpiece becomes. If the lever arms on the clamping jaws are the same length, forces on the push rod and the workpiece are the same. In known vices always acts due to the mounting of the fixed jaw and a force component perpendicular to the clamping force on the carriage bed. This is avoided with the development described above. This alone results regardless of the basic idea of the invention, a significant reduction of the force acting on the carriage bed bending moment, so that this development can also be used advantageously independent of the basic idea.
  • the construction according to the invention also offers a further advantage. Due to the deflection of the carriage bed and also due to the compressive forces on the jaws are in known clamping elements, the jaws "tilt" outward. This was compensated in the known clamping elements by relatively complicated measures, so-called Niederzugiano or Niederyakbacken. In the tensioning element according to the invention, these measures are no longer necessary, especially when the hinge pins are arranged for the clamping jaws so that there is a downward movement component on the clamping surfaces.
  • actuator can preferably serve a pressure cylinder.
  • a toggle mechanism, spindle drives or other mechanical, hydraulic, pneumatic or magnetic solutions are conceivable.
  • vices are operated in part via an external hydraulic supply directly with pressure medium.
  • vices are used in which by means of a spindle, a hydraulic piston is actuated.
  • the jaw is then assigned a piston of larger diameter.
  • the force exerted by the spindle force is amplified in the ratio of the surfaces of the two pistons and provided as a clamping force.
  • Such vices are also referred to as vices with hydraulic power amplification.
  • the clamping element according to the invention has to avoid the disadvantage described above according to a development in addition to a first pressure medium cylinder which actuates one of the two clamping jaws, via a further pressure medium cylinder, which actuates the respective other clamping jaw.
  • the second jaw thus has its own pressure medium supply and in turn unfolds a clamping force in addition to the clamping force of the first jaw.
  • the total clamping force is thus increased by the clamping force available by the second clamping jaw.
  • the further pressure medium cylinder is hydraulically or pneumatically coupled to the first pressure medium cylinder. It only needs a single pressure medium supply to be provided. In addition, the same pressure medium pressure results at both pressure medium cylinders. So it is structurally the easiest, if the other pressure medium cylinder and the first pressure medium cylinder are connected to each other via a bypass line. This solution is particularly suitable for vices with hydraulic power amplification, in which the spindle force is converted into the pressure medium pressure for the first and the other pressure medium cylinder. If then the piston surfaces of the first pressure medium cylinder and the further pressure medium cylinder are identical, the same clamping forces arise for both clamping jaws.
  • the further pressure cylinder is preferably arranged in a carriage bed of the clamping element.
  • sled beds are U-shaped profiles, on the upper sides of the jaws are performed. In the carriage bed is below the jaws sufficient space available to accommodate the further pressure cylinder, so that the overall size of the clamping element does not change.
  • This vice 10 has a carriage bed 11 and a "fixed" jaw 12 and a movable jaw 13.
  • the "fixed" jaw 12 is only to the extent that it is not confirmed when clamping a workpiece directly over a longer way, which will become apparent from the following description.
  • the jaw 13 When the jaw 13 is a jaw with hydraulic power boost. By means of the spindle 14, the clamping jaw 13 as long as moved up to the workpiece until it comes to rest against the workpiece. Then, the spindle 14 exerts only a pressure on a hydraulic fluid in a hydraulic cylinder 15, which in turn acts on a further piston surface within the clamping jaw 13 in a manner known per se.
  • the jaw 13 has a connection option for an external hydraulic line. This is already the case with the prior art in order to be able to connect the present clamping jaw 13, if necessary, to an external hydraulic line.
  • a bypass line 17 At this hydraulic connection via a hydraulic fitting 16, a bypass line 17 is connected.
  • a further pressure medium cylinder 18 Below the clamping jaw 13, a further pressure medium cylinder 18 is provided, which is acted upon by the pressure medium via the bypass line 17, which is connected via a further hydraulic connection 19 to the further pressure medium cylinder 18.
  • the clamping jaw 13 is designed as a two-armed lever and held by a hinge pin 20 on the carriage bed 11.
  • the upper lever arm of the clamping jaw 13 is connected to the pressure medium cylinder 15 and the spindle 14 and a pressure plate 21 for clamping the workpiece.
  • a cylinder bore 22 of the further pressure medium cylinder 18 is provided, in which a piston 23 is guided.
  • the second clamping jaw 12 is also designed as a two-armed lever, wherein the upper lever arm carries a pressure plate 24 for clamping the workpiece.
  • the clamping jaw 12 is in turn connected via a hinge pin 25 hingedly connected to the carriage bed 11.
  • a push rod 27 is attached via a hinge pin 26, which in turn is actuated by the piston 23 of the further pressure medium cylinder 18.
  • holes 29 are provided in the carriage bed 11 in a conventional manner. Accordingly, 27 holes 30 are also provided in the push rod, so that in each case by repositioning the hinge pin 25 and 26, the clamping jaw 12 is offset and so the span of the vise can be adjusted. Further, in the carriage bed 11, one of the number of holes 30 in the push rod 27 corresponding number of holes 31 is provided whose diameter is dimensioned larger by a sufficient amount than the diameter of the hinge pin 26, so that it is free upon actuation of the push rod 27 in the respective Can move holes 31. Alternatively, a slot may be provided in this area in the carriage bed 11.
  • the hinge pins 25 and 26 are arranged on the outside, as the clamping surfaces 21 and 24. When clamping the workpiece therefore result on the clamping surfaces 21 and 24 on the carriage bed 11 directed movement components that exert a Niederzug bin on the workpiece to be clamped.
  • the vise 10 described so far works as follows.
  • the pressure plate 21 is first brought into contact with the workpiece by operating the spindle 14.
  • the first hydraulic piston 15 is effective and effected the power amplification of the clamping force.
  • the hydraulic pressure generated in the first pressure medium cylinder 15 is guided via the bypass line 17 to the further pressure medium cylinder 18, so that the push rod 27 actuates the second clamping jaw 12 via the hinge pin 26.
  • the pressure plate 24 also tilts against the workpiece and in turn unfolds a by the pressure in the pressure cylinder 18 and the piston surface of the piston 23 and the ratio of the lever arms on the clamping jaw 12 certain compressive force or clamping force on the workpiece.
  • the clamping force can also be applied via an external hydraulic supply.
  • an additional connection for the external hydraulic supply is provided at a suitable location, for example on the bypass line 17.
  • Fig. 6 shows an embodiment of a vise 33, in which the clamping jaws 34 and 35 are formed as a one-armed lever and are mounted on the carriage bed 11 via joints 36, 37.
  • the joints 36, 37 are again arranged in the neutral fiber 32.
  • the clamping jaws 34, 35 are actuated via tie rods 38 running parallel to the neutral fiber 32 and which are pulled together by means of a pressure medium cylinder 39.
  • the in Fig. 7 The one vice 41 is hinged to the carriage bed 11, wherein the joint 43 is again in the neutral fiber 32 of the carriage bed 11.
  • the other jaw 42 is mounted on the carriage bed 11 via a pressure medium cylinder 44, the actuating direction of which is arranged in the neutral fiber 32 and which engages by means of a joint 45 on the clamping jaw 42, which again lies in the neutral fiber 32.
  • the clamping jaws 41, 42 are designed as two-armed lever, wherein each of the one lever arm, the clamping surface 21, 24 is associated. At the other lever arm, the clamping jaws 41, 42 coupled to each other via a parallel to the neutral fiber 32 extending push rod 46.
  • the push rod 46 is, as in the embodiment according to Fig. 1 to 5 on the clamping surfaces 21, 24 opposite side of the neutral fiber 32nd
  • two clamping jaws 34, 35 and 41, 42 each own pressure medium cylinder assigned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Gripping On Spindles (AREA)

Claims (10)

  1. Elément de serrage pour des pièces, en particulier étau (10, 33, 40) comprenant une première mâchoire de serrage (12, 34, 41) et une seconde mâchoire de serrage (13, 35, 42), lesquelles sont logées sur un plateau de chariot (11), les résultantes des forces introduites par les mâchoires de serrage (12, 13, 34, 35, 41, 42) dans le plateau de chariot (11) en raison des forces de serrage agissant sur les mâchoires de serrage (12, 13, 34, 35, 41, 42) étant situées dans le plan de la fibre (32) neutre du plateau de chariot (11), caractérisé en ce que la première mâchoire de serrage (12, 34, 41) et/ou la seconde mâchoire de serrage (13, 35, 42) s'appuient au moyen de respectivement un boulon d'articulation (20, 25 ; 36, 37 ; 43, 45) sur un plateau de chariot (11), des perçages (29) pour les boulons d'articulation (20, 25 ; 36, 37 ; 43, 45) étant disposés dans une fibre (32) neutre du plateau de chariot (11).
  2. Elément de serrage selon la revendication 1, caractérisé en ce que les mâchoires de serrage (12, 13, 41, 42) sont conçues sous forme de leviers à deux bras, une surface de serrage (21, 24) étant attribuée à un bras de levier et une tige de poussée (27, 46) s'appliquant sur l'autre bras de levier.
  3. Elément de serrage selon la revendication 2, caractérisé en ce que les bras de levier sont de longueur identique.
  4. Elément de serrage selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'un organe d'actionnement, en particulier un cylindre à agent sous pression (15, 44), s'appuie sur l'une des mâchoires de serrage (12, 13), de préférence la première mâchoire de serrage (12), et l'autre mâchoire de serrage (13) est actionnée au moyen d'une tige de poussée (27, 46).
  5. Elément de serrage selon la revendication 4, caractérisé en ce que l'organe d'actionnement est un cylindre à agent de pression (15, 46).
  6. Elément de serrage selon la revendication 5, caractérisé en ce que la première mâchoire de serrage (12) est actionnée au moyen d'un premier cylindre à agent sous pression (15) et un autre cylindre à agent sous pression (18) est attribué à la seconde mâchoire de serrage (13).
  7. Elément de serrage selon la revendication 6, caractérisé en ce que l'autre cylindre à agent sous pression (18) est couplé de façon hydraulique ou pneumatique au premier cylindre à agent sous pression (15).
  8. Elément de serrage selon la revendication 6 ou 7, caractérisé en ce que le premier et l'autre cylindre à agent sous pression (15, 18) sont reliés l'un à l'autre au moyen d'une conduite de dérivation (17).
  9. Elément de serrage selon l'une quelconque des revendications 6 à 8, caractérisé en ce que le premier cylindre à agent sous pression (15) et l'autre cylindre à agent sous pression (18) présentent un diamètre de piston identique.
  10. Elément de serrage selon l'une quelconque des revendications 6 à 9, caractérisé en ce que l'autre cylindre à agent sous pression (18) est disposé dans le plateau de chariot (11).
EP05817441A 2004-11-24 2005-11-23 Element de serrage de pieces, notamment un etau Not-in-force EP1824641B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05817441T PL1824641T3 (pl) 2004-11-24 2005-11-23 Element mocujący do części obrabianych, zwłaszcza imadło

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004056827A DE102004056827A1 (de) 2004-11-24 2004-11-24 Spannelement für Werkstücke, insbesondere Schraubstock
PCT/EP2005/012540 WO2006056422A1 (fr) 2004-11-24 2005-11-23 Element de serrage de pieces, notamment un etau

Publications (2)

Publication Number Publication Date
EP1824641A1 EP1824641A1 (fr) 2007-08-29
EP1824641B1 true EP1824641B1 (fr) 2011-01-05

Family

ID=35911238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05817441A Not-in-force EP1824641B1 (fr) 2004-11-24 2005-11-23 Element de serrage de pieces, notamment un etau

Country Status (10)

Country Link
US (1) US8167289B2 (fr)
EP (1) EP1824641B1 (fr)
JP (1) JP4749427B2 (fr)
AT (1) ATE494105T1 (fr)
CA (1) CA2570084C (fr)
DE (2) DE102004056827A1 (fr)
DK (1) DK1824641T3 (fr)
ES (1) ES2358038T3 (fr)
PL (1) PL1824641T3 (fr)
WO (1) WO2006056422A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007012219U1 (de) 2007-08-31 2007-12-13 Hohenstein Vorrichtungsbau Und Spannsysteme Gmbh Hydraulisches Spannbackensystem
DE102010035633B3 (de) * 2010-08-27 2011-11-24 Hohenstein Vorrichtungsbau Und Spannsysteme Gmbh Hydraulische Mehrteile-Spannvorrichtung
CN102380832B (zh) * 2010-08-31 2013-10-09 鸿富锦精密工业（深圳）有限公司 滑动定位机构
TWI409141B (zh) * 2012-07-20 2013-09-21 Lin Tseh Pei 虎鉗活動顎快拆裝置
TWI576207B (zh) * 2016-04-21 2017-04-01 Floating air pressure angle solid double clamp vise structure
TWI651167B (zh) * 2018-03-23 2019-02-21 陳逢霖 氣壓式虎鉗
CN111037250A (zh) * 2019-12-03 2020-04-21 中山市鸿勋机械有限公司 应用在自动扶梯梯级自动装配线的梯级夹具
TWI740558B (zh) * 2020-06-30 2021-09-21 銘唯精密企業有限公司 中心虎鉗結構

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1181398A (en) * 1967-11-01 1970-02-18 Kenneth Reginald Beetlestone A New or Improved Vice
JPS5828444A (ja) * 1981-08-11 1983-02-19 Toyoda Autom Loom Works Ltd クランプ機構
DE3227964C2 (de) * 1982-07-27 1984-06-28 Peddinghaus, Rolf, Dipl.-Ing., 5828 Ennepetal Parallelschraubstock
FR2559085B2 (fr) * 1984-02-02 1987-06-26 Boucher Freres Sarl Ets Dispositif permettant de maintenir une piece a usiner dans une position determinee par rapport a une machine-outil sur laquelle ce dispositif peut etre fixe
JP2548545B2 (ja) * 1986-09-10 1996-10-30 津田駒工業株式会社 万 力
JP2576607B2 (ja) 1988-12-05 1997-01-29 株式会社ニコン 小型のズームレンズ
JP2576607Y2 (ja) * 1992-01-07 1998-07-16 昭和電線電纜株式会社 線押さえ装置
JP3521783B2 (ja) * 1999-02-01 2004-04-19 スチールプランテック株式会社 クランプ装置

Also Published As

Publication number Publication date
DE502005010815D1 (de) 2011-02-17
JP2008520445A (ja) 2008-06-19
EP1824641A1 (fr) 2007-08-29
CA2570084C (fr) 2013-01-15
US8167289B2 (en) 2012-05-01
WO2006056422A1 (fr) 2006-06-01
JP4749427B2 (ja) 2011-08-17
CA2570084A1 (fr) 2006-06-01
DE102004056827A1 (de) 2006-06-01
ATE494105T1 (de) 2011-01-15
US20090134562A1 (en) 2009-05-28
PL1824641T3 (pl) 2011-06-30
DK1824641T3 (da) 2011-03-28
ES2358038T3 (es) 2011-05-05

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