EP1043124B1 - Dispositif pour serrer des pièces à travailler - Google Patents

Dispositif pour serrer des pièces à travailler Download PDF

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Publication number
EP1043124B1
EP1043124B1 EP99810292A EP99810292A EP1043124B1 EP 1043124 B1 EP1043124 B1 EP 1043124B1 EP 99810292 A EP99810292 A EP 99810292A EP 99810292 A EP99810292 A EP 99810292A EP 1043124 B1 EP1043124 B1 EP 1043124B1
Authority
EP
European Patent Office
Prior art keywords
clamping
guide
jaw
bearing support
slot
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
EP99810292A
Other languages
German (de)
English (en)
Other versions
EP1043124A1 (fr
Inventor
Guido Jun. Hofer
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.)
Guido Hofer Machinentechnik
Original Assignee
Guido Hofer Machinentechnik
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 Guido Hofer Machinentechnik filed Critical Guido Hofer Machinentechnik
Priority to EP99810292A priority Critical patent/EP1043124B1/fr
Priority to DE59912961T priority patent/DE59912961D1/de
Priority to AT99810292T priority patent/ATE313413T1/de
Publication of EP1043124A1 publication Critical patent/EP1043124A1/fr
Application granted granted Critical
Publication of EP1043124B1 publication Critical patent/EP1043124B1/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
    • B25B1/08—Arrangements for positively actuating jaws using cams
    • 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
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • 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
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/12—Arrangements for positively actuating jaws using screws with provision for disengagement
    • 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
    • B25B1/2484—Supports
    • 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
    • B25B1/2489—Slideways

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • EP-A-0'641'623 describes and illustrates a clamping device for holding workpieces.
  • This clamping device is used for clamping workpieces against opposite counter-attacks, which can be fixed, for example, by expansion pins in a support plate or a table.
  • This clamping device consists essentially of a clamping jaw, a guide support on which the clamping jaw is displaceable, and arranged in the clamping jaw at an angle to the jig yoke-like clamping bracket, which can be anchored to the underside of a T-shaped cross-section carrier and for clamping the Clamping jaw is provided.
  • a clamping screw fastened in the clamping bow and supported on the outside on an inclined surface passes through a slot oriented in the clamping direction in the clamping jaw.
  • An inner cavity in the clamping jaw is dimensioned so that a relative displacement movement between clamping bracket and clamping jaw in the clamping direction should be possible.
  • the clamping screw is loosened so far that a locking profiling between the carrier and clamping bracket is out of engagement, so that a pre-positioning of the clamping jaw by moving to a workpiece to be held seems possible.
  • the oblique position of 45 ° of the clamping bracket and the rectangular bearing surface of the clamping screw on the inclined surface of the clamping jaw seem to be an optimal overall shape of the clamping device in terms of overall effect.
  • the forces introduced during clamping in the clamping jaw forces are approximately equally divided into the clamping direction on the one hand and in the bearing direction on the other. This may be true, and the attachment of the clamping device seems simple due to the illustrated construction, however, the clamping device begins to clamp after clamping on a workpiece during clamping by the clamping screw relatively quickly to the pad, so that a movement of the clamping jaw in the clamping direction is omitted.
  • a multiple clamping device which consists of a clamping block, at least one clamping piece and a clamping end piece exists, which together with a pair of guide axes form a clamping unit.
  • the fixture is bolted on a machine table and through one fixing screw each, the guide axes are held in the clamping block.
  • Clamping piece and clamping end piece are on the guide axes displaceable and lockable by locking screws.
  • To hold a Workpiece is a holding jaw rigidly arranged with a base.
  • each Clamping piece is the end face axially to the adjacent clamping block or another Clamping piece designed as a clamping plate with wedge clamping bevel Jaw and provided with a recess having a base.
  • DE 94 05 491 U1 provides a multiple clamping device, in particular for clamping workpieces on the machine table of a machine tool, which has a basic element on the multi-part clamping elements guided slidably and are fixable and on a block shoe a clamping element separated via a wedge clamping bevel on the block shoe adjustable jaw and opposite one on the block shoe having fixed rigid jaw. Between the adjustable jaw and the wedge chamfer on the block shoe is in the direction of the base element displaceable and a tension element on the base element provided by sliding block lockable wedge.
  • US-A-2'667'799 relates to a chuck for workpieces for machining Machining in a machine tool.
  • This clamping device has a base plate, which at one end by a stop for a workpiece is formed.
  • a T-shaped groove is provided, in which a sliding block is inserted, which by means of screw and Nut holds a clamping block of a clamping device
  • To the clamping block are two inclined guide stages provided on which a sliding wedge adjustable is applied.
  • the sliding wedge has a direction of adjustment of the clamping device arranged slot, which passes through the clamping block and in the in the T-slot arranged sliding nut anchored screw surrounds
  • a slide wedge clamping device for clamping workpieces on a Attachment surface such as e.g. the machine table of a machine tool is disclosed in DE 32 37 705 A1
  • This clamping device is by means of a in a T-slot of an auxiliary table arranged sliding block and a member one or more intermeshing fastening screw on the auxiliary table friction or It is fastened non-positively.
  • this clamping device consists of a anchored in the sliding block, the limb passing through the clamping screw. In order to is the clamping piece can be moved horizontally by the clamping screw is provided in the clamping piece in the direction of movement extending slot.
  • FR-A-2'689'429 teaches a clamping device with a basic element, on the two similar closure elements at a distance one behind the other are arranged displaceably. Between the shutter elements is a workpiece clamped, wherein a clamping jaw of a closure element and a support of the other VerMartinelentes for workpiece holder are arranged opposite each other.
  • a workpiece positioning device is known, at the intersections of T-slots of a clamping plate or a base body be mounted and adjusted. This should workpieces in a variety of Height distances and directions can be positioned in a plane wherein positioning of the positioning device system and independent of dimension mounted and adjusted at the intersections of T-slots are.
  • the object of the present invention was to provide a reliable device for clamping of workpieces to be machined, both a secure attachment to the surface guaranteed as well as to protect the Clamping device optimal clamping force with moderate clamping force allowed. Just the latter can not afford the cited clamping device.
  • this object is achieved by that the support bracket on the bottom with a projecting into the T-slot guide Guide wedge is screwed, in which one against the shoulders of the T-slot guide liftable clamping device is mounted, the one after the clamping direction arranged, rotatable shaft, on which at shoulders
  • the T-slot guide liftable clamping strips mounted on the shaft Clamping device are provided
  • the construction and operation of the inventive device can thereby be optimized if the Fuhrungsanordhung by two separate Leadership levels is formed.
  • the clamping screw for example is designed as a hexagon socket screw, proves to be advantageous if the Clamping screw in a step formed by the stepped guide levels in the support bracket is attached.
  • Fig. 1 illustrates a device for clamping of workpieces to be machined 4 resp. a clamping device 1, in particular for the machining of workpieces 4 on a machine tool.
  • This clamping device 1 consists of at least two clamping jaws 2, 3, between which a workpiece 4 is clamped and of which at least one clamping jaw 3 along a support 5 is displaceable.
  • This carrier 5 is usually used on the table 6 of a machine tool or indirectly via a tower-like arrangement for multi-clamping technology. In a tower-like structure, the carriers 5 may be mounted in a vertical arrangement manner on an intermediate stand within a radius of 360 °. Of course, the carrier 5 and clamping jaws 2, 3 are designed and fastened so that several workpieces in series one above the other.
  • the fixed to the carrier 5 jaw 2 is designed for stationary arrangement; but it can still bring along the support 5 in different positions and differs from a clamping jaw 3 in that it does not allow Nachspannfunktion or no Nachspannbacke 7, which will be described later.
  • a scale on the side of a carrier 5 (not shown) and a reference mark on the clamping jaws 2, 3 facilitate the presetting.
  • the adjustable on the support 5 / n jaw / n 3 consists or consist of a support on the carrier 5 form-fitting aufspann- and anchored support frame 8 and an adjustable guided on this, on the workpiece 4 from one side acting Nachspannbacke 7.
  • the clamping jaws 2, 3 support shoulders 9, 10, on which the workpiece 4 to be machined is placed before clamping by the Nachspannbacke 7.
  • the Nachspannbacke 7 relative to the workpiece 4 is in a loose state.
  • Fig. 1 further shows that the workpiece 4 facing, a shoulder 9 having side of the stationary jaw 2 of the Nachspannbacke 7 facing away from the movable or movable jaw 3 corresponds.
  • Support bracket 8 and 7 Nachspannbacke the sliding and lockable jaw 3 together form a guide assembly 11, which is inclined to the clamping direction resp. has oblique position, so that the Nachspannbacke 7 is moved during clamping against the workpiece 4 and clamped to the carrier 5 out (see also Fig. 2).
  • the Nachspannbacke 7 is guided continuously adjustable along two formed by the guide assembly 11, remote guide planes 12, 13 in the support frame 8.
  • the mutually remote guide planes 12, 13 form a step 14 which is provided on the support bracket 8.
  • the Nachspannbacke 7 is formed as a between the inclined guide planes 12, 13 and the workpiece 4 by the clamping screw 18 driven conical wedge, which is capable of generating a high and constant clamping force.
  • a laterally limited, wedge-shaped guide groove 23 is excavated in the support frame 8.
  • a T-slot guide 24 extending in the clamping direction is provided in the carrier 5, which serves to lock or anchor the clamping jaws 2, 3.
  • On both sides of the T-slot guide 24 is on the jaws 2, 3 facing, strip-like upper side of the carrier 5 a longitudinal profiled resp.
  • the tensioning device 25 is mounted on an eccentric shaft 29.
  • the shaft 29 is performed for mounting in the guide wedge 27 through a bore 30 and rotatably supported in an opposite bearing bore 31 in the guide wedge 27 by a shaft journal 32.
  • a locking ring 33 at the end of the shaft journal 32 and an annular collar 34 at the opposite shaft end 35 lock the eccentric shaft 29 in the axial direction.
  • the clamping device 38 acting on the shoulders 40 extending in T-slot guide strips 41. Since during clamping of the clamping device 38, this is also slightly offset laterally by the eccentric rotational movement of the shaft 29, the strips 41 impinging on the shoulders 40 can have differently wide adjusting surfaces in the sense of a uniform distribution of the clamping force.
  • the locking of the clamping device 38 and the tensioning device 25 in the pretensioned position is achieved by an increasing frictional engagement between the eccentric shaft section 37 and the clamping device 38 during clamping.
  • a mark on the front side of the hexagon 39 indicates the position of the shaft 29.
  • the inventive clamping device 1 causes short when used Set-up times and allows a modular design. It is suitable for a precise Manufacture in particular and is not susceptible to wear, so they have a long life reached.

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

Claims (7)

  1. Dispositif (1) pour serrer des pièces (4) à usiner, constitué d'au moins deux mors de serrage (2, 3) présentant des épaulements d'appui (9, 10) pour une pièce serrée (4) et dont au moins l'un (3) est conçu à translation le long d'un élément porteur (5) stationnaire et avec possibilité d'assujettissement et d'ajustage des deux côtés de l'élément porteur (5) dans la direction de développement, sachant que ce mors de serrage (3) présente un bloc d'appui (8) pouvant être serré sur l'élément porteur (5) et un mors de resserrage (7) pouvant être déplacé en continu sur ce bloc le long d'un plan de guidage incliné par rapport à la direction de serrage et formé par un ensemble de guidage, le mors de resserrage (7) étant réalisé sous forme de clavette conique pouvant être enfoncée entre le plan de guidage incliné et une pièce (4), et l'élément porteur (5) présentant un guide à rainure en T (24) s'étendant dans la direction de développement ainsi qu'une surface (26) longitudinalement profilée à la manière d'une bande des deux côtés dans la direction de développement et coopérant avec le bloc d'appui (8) pour le positionnement en engagement positif du mors de serrage (3), caractérisé en ce que le bloc d'appui (8) est boulonné sur le dessous à une clavette de guidage (27) faisant saillie dans le guide à rainure en T (24) et dans laquelle est monté un dispositif de serrage (25) pouvant être soulevé contre les épaulements (40) du guide à rainure en T (24), dispositif qui présente un arbre rotatif (29) disposé après la direction de serrage, arbre sur lequel sont prévues des barrettes de serrage (41), pouvant être soulevées contre des épaulements (40) du guide à rainure en T (24), d'un dispositif de blocage par serrage (38) monté sur l'arbre (29).
  2. Dispositif selon la revendication 1, caractérisé en ce que, lorsque le bloc d'appui (8) est serré sur l'élément porteur (5), l'arbre excentrique (29) peut être bloqué en rotation par friction entre un tronçon d'arbre (37) de l'arbre (29) et le dispositif de blocage par serrage (38).
  3. Dispositif selon la revendication 2, caractérisé en ce que l'ensemble de guidage (11) présente une rainure de guidage (23) recevant le mors de resserrage (7) dans le bloc d'appui (8), et une vis de serrage (18) traversant le mors de resserrage (7) dans la direction de translation et fixée dans le bloc d'appui (8).
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'ensemble de serrage (11) est formé par deux plans de guidage (12, 13) mutuellement décalés.
  5. Dispositif selon la revendication 4, caractérisé en ce que la vis de serrage (18) est fixée dans le bloc d'appui (8) dans un gradin (14) formé par les plans de guidage décalés (12, 13).
  6. Dispositif selon la revendication 4 ou 5, caractérisé en ce que le mors de resserrage (7) est conçu guidé en enfoncement dans des rainures latérales (42) du bloc d'appui (8) qui s'étendent dans la direction de translation et sont latéralement limitrophes d'une rainure de guidage (23).
  7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que le mors de resserrage (7) est sollicité dans la direction de translation par un ressort (22) s'appuyant contre le gradin (14) et libérant au moins partiellement un épaulement d'appui (10) du bloc d'appui (8).
EP99810292A 1999-04-09 1999-04-09 Dispositif pour serrer des pièces à travailler Expired - Lifetime EP1043124B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP99810292A EP1043124B1 (fr) 1999-04-09 1999-04-09 Dispositif pour serrer des pièces à travailler
DE59912961T DE59912961D1 (de) 1999-04-09 1999-04-09 Vorrichtung zum Einspannen von zu bearbeitenden Werkstücken
AT99810292T ATE313413T1 (de) 1999-04-09 1999-04-09 Vorrichtung zum einspannen von zu bearbeitenden werkstücken

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99810292A EP1043124B1 (fr) 1999-04-09 1999-04-09 Dispositif pour serrer des pièces à travailler

Publications (2)

Publication Number Publication Date
EP1043124A1 EP1043124A1 (fr) 2000-10-11
EP1043124B1 true EP1043124B1 (fr) 2005-12-21

Family

ID=8242756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99810292A Expired - Lifetime EP1043124B1 (fr) 1999-04-09 1999-04-09 Dispositif pour serrer des pièces à travailler

Country Status (3)

Country Link
EP (1) EP1043124B1 (fr)
AT (1) ATE313413T1 (fr)
DE (1) DE59912961D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302255A1 (de) * 2003-01-22 2004-08-05 Gressel Ag Mehrfachspanner
DE102013104975B4 (de) * 2013-05-15 2015-02-26 Gressel Ag Spannvorrichtung
FI125373B (fi) * 2013-05-31 2015-09-15 Ok Vise Oy Sovitelma, kiinnitinväline ja menetelmä kappaleen kiinnittämiseksi sekä kiinnitinpuristin
DE202013104141U1 (de) * 2013-09-11 2014-12-12 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spannbackenanordnung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1370683A (en) * 1919-06-16 1921-03-08 Mccrosky Tool Corp Clamping device
US2667799A (en) * 1952-10-09 1954-02-02 Stanley J Rzepela Machine vise having base-clamping screw and nut assembly for sectional movable jaws
JPS58126140U (ja) * 1982-02-19 1983-08-27 相生精機株式会社 ネジ締付傾斜面倍力式クランプ
DD221107A1 (de) * 1983-10-18 1985-04-17 Hohenstein Vorrichtungsbau Werkstueck-positioniervorrichtung
DE3804270A1 (de) * 1988-01-05 1989-07-13 Zivorad Mirkovic Mehrfach-spannvorrichtung
FR2689429B1 (fr) * 1992-04-06 1997-03-28 Evard Precision Sa Etau de serrage modulaire.
DE9405491U1 (de) * 1993-04-07 1994-06-16 Mirković, Živorad, Neuhausen am Rheinfall Mehrfach-Spannvorrichtung

Also Published As

Publication number Publication date
DE59912961D1 (de) 2006-01-26
ATE313413T1 (de) 2006-01-15
EP1043124A1 (fr) 2000-10-11

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