EP1043124A1 - Dispositif pour serrer des pièces à travailler - Google Patents

Dispositif pour serrer des pièces à travailler Download PDF

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Publication number
EP1043124A1
EP1043124A1 EP99810292A EP99810292A EP1043124A1 EP 1043124 A1 EP1043124 A1 EP 1043124A1 EP 99810292 A EP99810292 A EP 99810292A EP 99810292 A EP99810292 A EP 99810292A EP 1043124 A1 EP1043124 A1 EP 1043124A1
Authority
EP
European Patent Office
Prior art keywords
clamping
guide
jaw
carrier
support bracket
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.)
Granted
Application number
EP99810292A
Other languages
German (de)
English (en)
Other versions
EP1043124B1 (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 DE59912961T priority Critical patent/DE59912961D1/de
Priority to EP99810292A priority patent/EP1043124B1/fr
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 for clamping workpieces to be machined, consisting of at least two, shoulders for a clamped Workpiece jaws, at least one of which along one stationary carrier slidable and lockable and adjustable on both sides of the carrier is trained.
  • EP-A-0'641'623 describes and illustrates a tensioning device for Holding workpieces.
  • This clamping device is used to clamp workpieces against opposite counter-stops, for example by expansion pins can be fixed in a carrier plate or a table.
  • This tensioning device consists essentially of a clamping jaw, a guide bracket which the jaw is slidable, and one in the jaw at an angle to the clamping direction arranged yoke-like clamp, which on the underside of the carrier having a T-shaped cross section can be anchored and Clamping the jaw is provided.
  • An internal cavity in the clamping jaw is dimensioned so that a relative sliding movement between the clamping bracket and clamping jaw in the clamping direction should be possible.
  • the clamping screw is loosened to such an extent that a locking profile between the carrier and the clamping bracket is disengaged, so that pre-positioning of the clamping jaw by moving it to a workpiece to be held appears possible.
  • the inclined position of 45 ° of the clamping bracket and the right-angled contact surface of the clamping screw on the inclined surface of the clamping jaw seem to be an optimal design of the clamping device with regard to the overall effect.
  • the forces introduced into the clamping jaw during clamping are divided approximately equally in the clamping direction on the one hand and in the bearing direction on the other.
  • the object of the present invention was, however, a reliable device to clamp workpieces to be machined, both a secure attachment to the base ensures as well as one to protect the Clamping device allows optimal clamping force with moderate clamping force. Just the latter is unable to perform the cited clamping device.
  • the clamping jaw has a support bracket which can be positively clamped on the carrier and an adjustable clamping jaw which acts on the workpiece. This results in a separation of functions between re-tensioning the pre-positioned device and attaching the device to the base and it can tilt or. an irregular arrangement of the device relative to the workpiece can be avoided.
  • the support bracket and the clamping jaw advantageously form one to the clamping direction of the workpiece inclined guide arrangement through which the reaction forces can be distributed, for example on sliding surfaces.
  • Characterized in that the clamping jaw along at least one through the guide arrangement formed management level are continuously adjustable can, a clamping pressure that is gentle on the device and the workpiece be generated.
  • clamping jaw can be used as one between the inclined guide plane and the workpiece can be driven in a conical wedge which has a clamping action generated and easy to solve.
  • the construction and operation of the device according to the invention can thereby can be optimized if the guide arrangement is separated by two Management 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 the support bracket is attached.
  • the clamping jaw expediently in the direction of displacement adjacent to the guide groove extending side grooves of the support bracket designed.
  • the clamping jaw can be used to release the support shoulders on the support bracket acted upon in the direction of displacement by a spring supported on the step that prevents the clamping jaw from being clamped in the End position slips.
  • the carrier has on both sides a extending in the direction of extension Tnut guide one with the support bracket to determine the clamping position interacting, longitudinally profiled surface - for example Tooth-on, which serves to anchor the support bracket to the carrier.
  • the first is to achieve a parallel guidance between the trestle and the support on the underside by a guide wedge protruding into the groove guide formed in which a clamping device can be raised against the shoulders of the Tnut Entry is eccentrically mounted, which is a simple clamping of the support frame allowed on the carrier.
  • the tensioning device is expediently provided on a rotatable, eccentrically designed one Shaft mounted, through which a lock between the trestle and Carrier can be achieved.
  • the tensioning device can be raised on the shoulders of the groove guide Clamping strips with which stabilization of the clamping device can be achieved can.
  • Fig. 1 illustrates a device for clamping workpieces 4 to be machined.
  • a clamping device 1 in particular for machining 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 is displaceable along a carrier 5.
  • This carrier 5 can usually be used on the table 6 of a machine tool or indirectly via a tower-like arrangement for multi-clamping technology.
  • the supports 5 can be fastened in a vertical arrangement to an intermediate stand distributed in a 360 ° radius.
  • the carrier 5 and jaws 2, 3 are designed and fastened so that several workpieces in a row one above the other.
  • the clamping jaw 2 fastened to the carrier 5 is designed for a fixed arrangement; however, it can still be brought into different positions along the carrier 5 and differs from a clamping jaw 3 in that it does not allow a clamping function or has no clamping jaw 7, which will be described below.
  • 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 jaw (s) 3 on the carrier 5 consists of a support bracket 8 which can be positively clamped and anchored on the carrier 5 and an adjustable clamping jaw 7, which acts on the workpiece 4 from one side.
  • On the workpiece 4 facing side have the clamping jaws 2, 3 support shoulders 9, 10, on which the workpiece 4 to be machined is placed before the clamping by the clamping jaw 7.
  • the clamping jaw 7 is in a loose state with respect to the workpiece 4. 1 further shows that the side of the stationary clamping jaw 2 facing the workpiece 4 and having a shoulder 9 corresponds to the side of the movable or displaceable clamping jaw 3 facing away from the clamping jaw 7.
  • Support bracket 8 and clamping jaw 7 of the displaceable and lockable clamping jaw 3 together form a guide arrangement 11, which is inclined to the clamping direction, respectively. has an inclined position, so that the clamping jaw 7 is displaced during clamping against the workpiece 4 and clamped towards the carrier 5 (see also FIG. 2).
  • the tensioning jaw 7 is guided in an infinitely adjustable manner in the support bracket 8 along two stepped guide levels 12, 13 formed by the guide arrangement 11.
  • a continuous management level which is conceivable for a person skilled in the art but is not shown, would be an alternative possibility for displacing the clamping jaw 7.
  • the mutually separated guide planes 12, 13 form a step 14 which is provided on the support bracket 8.
  • a thread 16 is drilled into the end face 15 of the step 14 forming a right angle to the guide planes 12, 13, in which a tension screw 18 is inserted, which passes through the tensioning jaw 7 in a through bore 17 and extends in the direction of the guide planes 12, 13, the screw head 19 of which abuts on the clamping jaw 7.
  • the through hole 17 is located in a projection 20 of the clamping jaw 7 corresponding to the step height.
  • a cavity 21 is formed which changes as a result of the movements of the latter.
  • this cavity 21 there is a helical spring 22 on both sides of the tensioning screw 18 (see Fig.
  • the clamping jaw 7 is expedient formed in the side grooves 42 of the support bracket 8 adjacent to the guide groove 23 and extending in the direction of displacement. This measure can also be used to achieve a better feeling of clamping during the clamping process.
  • the clamping jaw 7 is designed as a conical wedge which can be driven in between the inclined guide planes 12, 13 and the workpiece 4 by the clamping screw 18 and which can generate a high and constant clamping force.
  • a laterally limited, wedge-shaped guide groove 23 is excavated in the support block 8.
  • a T-slot guide 24 running 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 clamping jaws 2, 3 facing, strip-like top of the carrier 5 a longitudinally profiled or.
  • the support bracket 8 is engaged with a complementary underside.
  • This toothing between the carrier 5 and the support bracket 8 facilitates precise positioning of the clamping jaws 3 on the workpieces 4.
  • the positioning of a clamping jaw 3 can be favored with an easy-to-use clamping device 25, especially since with a vertically arranged support 5 the clamping jaw 3 and the workpiece 4 must initially be fixed by holding the toothings 26, 26 'together with one hand.
  • the support bracket 8 has on the underside a guide wedge 27 which projects into the T-slot guide 24 and which is slidably guided at least on the lateral guide flanks 28.
  • the guide wedge 27 is screwed to the support bracket 8 in the illustrated embodiment.
  • the clamping device 25 is mounted on an eccentric shaft 29 in the guide wedge 27.
  • the shaft 29 is carried out 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.
  • An eccentric shaft section 37, on which a clamping device 38 is mounted, is located between the shaft end 35 and the shaft journal 32, which, however, have different diameters due to the passage of the shaft 29 during assembly during assembly.
  • the clamping device 38 is actuated via a hexagon 39 fastened on the end face of the shaft end 35, through which the shaft 29 can be rotated, for example by means of a torque wrench, and the clamping device 38 can be clamped in the T-slot guide 24 with its shoulders 40.
  • the clamping device 38 has strips 41 which act on the shoulders 40 and run in a T-slot guide. Since the clamping device 38 is also slightly displaced laterally due to the eccentric rotary movement of the shaft 29, the strips 41 striking the shoulders 40 can have differently wide contact surfaces in the sense of a uniform distribution of the clamping force.
  • the locking of the clamping device 38 or the clamping 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 marking on the end face of the hexagon 39 indicates the position of the shaft 29.
  • the clamping device 1 brings about short use when used Setup times and allows a modular structure. It is suitable for a precise Manufacturing in particular and is not prone to wear, making it long-lasting reached.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Feeding Of Workpieces (AREA)
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
DE59912961T DE59912961D1 (de) 1999-04-09 1999-04-09 Vorrichtung zum Einspannen von zu bearbeitenden Werkstücken
EP99810292A EP1043124B1 (fr) 1999-04-09 1999-04-09 Dispositif pour serrer des pièces à travailler
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 true EP1043124A1 (fr) 2000-10-11
EP1043124B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004065065A1 (fr) * 2003-01-22 2004-08-05 Gressel Ag Etau multiple
EP2803446A1 (fr) * 2013-05-15 2014-11-19 Gressel AG Dispositif de serrage
WO2014191629A1 (fr) 2013-05-31 2014-12-04 Ok-Vise Oy Agencement, dispositif de fixation, procede et systeme pour serrer une piece, ainsi que que pince de fixation
DE202013104141U1 (de) * 2013-09-11 2014-12-12 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spannbackenanordnung

Citations (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
DE3237705A1 (de) * 1982-02-19 1983-09-01 AIOI Seiki K.K., Itami, Hyogo Gleitkeil-spannvorrichtung
DE3437260A1 (de) * 1983-10-18 1985-05-09 VEB Werkzeugmaschinenkombinat "Fritz Heckert" Karl-Marx-Stadt, DDR 9030 Karl-Marx-Stadt Werkstueck-positioniervorrichtung
EP0328792A2 (fr) * 1988-01-05 1989-08-23 Zivorad Mirkovic Dispositif de serrage multiple
FR2689429A1 (fr) * 1992-04-06 1993-10-08 Evard Precision Sa Etau de serrage modulaire.
DE9405491U1 (de) * 1993-04-07 1994-06-16 Mirković, Živorad, Neuhausen am Rheinfall Mehrfach-Spannvorrichtung

Patent Citations (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
DE3237705A1 (de) * 1982-02-19 1983-09-01 AIOI Seiki K.K., Itami, Hyogo Gleitkeil-spannvorrichtung
DE3437260A1 (de) * 1983-10-18 1985-05-09 VEB Werkzeugmaschinenkombinat "Fritz Heckert" Karl-Marx-Stadt, DDR 9030 Karl-Marx-Stadt Werkstueck-positioniervorrichtung
EP0328792A2 (fr) * 1988-01-05 1989-08-23 Zivorad Mirkovic Dispositif de serrage multiple
FR2689429A1 (fr) * 1992-04-06 1993-10-08 Evard Precision Sa Etau de serrage modulaire.
DE9405491U1 (de) * 1993-04-07 1994-06-16 Mirković, Živorad, Neuhausen am Rheinfall Mehrfach-Spannvorrichtung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004065065A1 (fr) * 2003-01-22 2004-08-05 Gressel Ag Etau multiple
DE10302255A1 (de) * 2003-01-22 2004-08-05 Gressel Ag Mehrfachspanner
EP2803446A1 (fr) * 2013-05-15 2014-11-19 Gressel AG Dispositif de serrage
WO2014191629A1 (fr) 2013-05-31 2014-12-04 Ok-Vise Oy Agencement, dispositif de fixation, procede et systeme pour serrer une piece, ainsi que que pince de fixation
EP3003641A4 (fr) * 2013-05-31 2017-04-26 Ok-Vise Oy Agencement, dispositif de fixation, procede et systeme pour serrer une piece, ainsi que que pince de fixation
DE202013104141U1 (de) * 2013-09-11 2014-12-12 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Spannbackenanordnung

Also Published As

Publication number Publication date
DE59912961D1 (de) 2006-01-26
ATE313413T1 (de) 2006-01-15
EP1043124B1 (fr) 2005-12-21

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