EP0411472A1 - Dispositif sur des étaux de machines pour serrer et centrer des pièces à usiner - Google Patents

Dispositif sur des étaux de machines pour serrer et centrer des pièces à usiner Download PDF

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Publication number
EP0411472A1
EP0411472A1 EP90114316A EP90114316A EP0411472A1 EP 0411472 A1 EP0411472 A1 EP 0411472A1 EP 90114316 A EP90114316 A EP 90114316A EP 90114316 A EP90114316 A EP 90114316A EP 0411472 A1 EP0411472 A1 EP 0411472A1
Authority
EP
European Patent Office
Prior art keywords
drive spindle
vice body
spindle
clamping
power amplifier
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.)
Withdrawn
Application number
EP90114316A
Other languages
German (de)
English (en)
Inventor
Ludwig M. Dipl.-Ing. Krause (Fh)
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.)
Saurer Allma GmbH
Original Assignee
Saurer Allma 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 Saurer Allma GmbH filed Critical Saurer Allma GmbH
Publication of EP0411472A1 publication Critical patent/EP0411472A1/fr
Withdrawn legal-status Critical Current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
    • B25B1/10—Arrangements for positively actuating jaws using screws
    • B25B1/103—Arrangements for positively actuating jaws using screws with one screw perpendicular to the jaw faces, e.g. a differential or telescopic screw
    • 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
    • B25B1/106—Arrangements for positively actuating jaws using screws with mechanical or hydraulic power amplifiers

Definitions

  • the invention relates to a device on machine vices for the central clamping of workpieces with a vice body, in which two slides are movable symmetrically to a central plane, each carrying a clamping jaw and with a drive spindle for both slides.
  • DE-AS 12 20 800 describes a machine vice of the type specified above, which is for centric Clamping workpieces.
  • This machine vice also has a power amplifier, with which it is possible to press one of the clamping jaws against the other clamping jaws with a much greater force than would be possible simply by using a drive spindle.
  • the feed movement entered at the crank is greatly reduced by the power amplifier and the force is increased accordingly.
  • a hydraulic booster is used in the proposed proposal.
  • the known machine vices using a power amplifier make it possible to achieve precise clamping of the workpieces even with comparatively high clamping forces.
  • the clamping center that is to say the central plane between the clamping jaws, changes during the clamping process. This proves to be particularly disadvantageous when a plurality of machine vices are used on the same device or when different workpieces are to be clamped.
  • the invention is based on a device of the type specified at the outset and proposes that a device for adjusting the center plane is provided relative to a base plate of the machine vice.
  • Such an adjustment device can be designed in various ways. With it, it is possible to compensate for unavoidable deformations, for example also of the workpiece, and to ensure that the workpiece is fixed in a precisely predetermined position.
  • the device according to the invention can be designed, for example, in such a way that the vice body as a whole is displaced with respect to a base plate which is designed separately from it. The vice body sits like a sled on the base plate, which has suitable adjusting spindles or similar means.
  • axially adjustable abutments are provided on the vice body for the screw spindle or also for a power amplifier.
  • the base plate can be configured in one piece with the vice body.
  • an abutment plate is arranged on the vise body, which has a threaded hole in which a screw or a screw bushing is adjustable, on which the drive spindle or the power amplifier is supported.
  • the drive spindle In centric clamping, it is known to design the drive spindle in two parts, in order to obtain a jaw movement for the purpose of clamping, regardless of the rotary movement of the drive spindle by means of the force amplifiers.
  • the invention provides that the two parts of the drive spindle are non-rotatable in the working position, but are coupled with axial mobility, and that the coupling elements are detachable, rotatable relative to one another for the purpose of adjustment and can be locked again.
  • the adjustment is made in that the two Parts of the drive spindle are turned against each other. In this way, movement of one carriage can be obtained while the other carriage is not being moved. This displaces the middle plane between the two sledges.
  • At least one slide has a spindle nut which is designed as a screw bushing, an internal thread of the screw bushing interacting with the drive spindle and an external thread with a different pitch being adjustable and lockable in a thread of the slide.
  • An adjustment of the central plane can also be achieved in this way, in this case with the drive spindle at a standstill.
  • the invention is intended for machine vices, in which one of the jaws or the slide is possibly under the action of a power amplifier during the clamping process.
  • a power amplifier during the clamping process.
  • the invention also provides that a power amplifier is provided for each of the two slides, which can be actuated by the common crank of the drive spindle. It has been found that by means of the device according to the invention, a significant increase in precision can be achieved precisely with this design.
  • the use of two power amplifiers on a machine vice has the consequence that the machine vice consists of a relatively large number of individual parts, the tolerances of which add up.
  • the clamping center that is to say the central plane, occupies an exact position.
  • clamping means for fixing the vice body on the base plate. After tightening, these clamping devices ensure that the vice body is held securely on the base plate.
  • the invention proposes to use a lower plate for arranging several base plates of machine vices side by side.
  • the adjusting device of the invention allows in particular to produce centric clamps with a uniform minimum tolerance, which is particularly advantageous when several clamps are attached next to one another on a machine table for series production of parts.
  • the drive spindle 7 is arranged, which consists essentially of the spindle part 10 and the spindle part 11.
  • a thread 8 or 9 is provided on the spindle parts 10 and 11, which each cooperate with a corresponding spindle nut 19 and 20 of the slide 2 and 3.
  • the thread 8 is, for example, right-handed and the thread 9 is formed, for example, left-handed, so that when the drive spindle 7 rotates, the carriages 2 and 3 approach or move away from one another.
  • the slide guides which are also arranged in the recess 21 of the vice body, are not shown in detail.
  • the slides carry the clamping jaws 4 and 5, it being provided in the exemplary embodiment shown that the clamping jaws can be fixed at different points on the slide in order to be able to adapt the vice to different workpiece dimensions.
  • the invention can also be used in those designs in which the slide and clamping jaws are essentially designed in one piece.
  • a crank 6 indicated by dash-dotted lines can be attached to the polygon 22.
  • a clutch of no further interest is provided, which is effective at a predetermined torque.
  • the polygon in addition to the shaft 24, also carries the bush 25 and thus the housing 26 of the spindle part 11.
  • the housing 26 encloses the power amplifier 14, which essentially has a design as described in DE-0S 37 08 021.
  • a push pin 16 is displaceable in a recess of the element 30 and rests with its one end against the primary member 15 and presses against the push rod 12 with its other end.
  • This push rod lies in a recess of the drive spindle 7, namely both the spindle part 11 and the spindle part 10.
  • This push rod 12 acts with its left end in the drawing on the power amplifier 13, which is installed in the housing 34 of the spindle part 10.
  • This force amplifier 13 is essentially of the same design as the force amplifier 14. If the pressure rollers 28 of this force amplifier are pressed into the gap 29, a force is exerted on the slide 2 via the plate spring assembly 35 and the thread 8 and the clamping jaw 4 against that on the clamping jaw 5 adjacent workpiece, i.e. pressed to the right.
  • the element 36 of the booster 13 is supported on the abutment 17.
  • the spring 37 serves to push the push rod 12 back during the return stroke movement and to give the pressure rollers 28 of the power amplifier 13 space for the backward movement, in which the primary member 38 of this power amplifier 13 also migrates back.
  • the two spindle parts 10 and 11 are connected to one another by a feather key bushing 40 in such a way that the two spindle parts are taken along in a rotationally secure manner, but that axial movements as a result of the force strokes of the power amplifiers 13 and 14 are possible.
  • An abutment plate 44 is attached to the left end of the vice body 1 in the drawing.
  • This abutment plate 44 has a threaded bore 48 into which the screw 45 can be screwed.
  • the desired position of the screw can be fixed by the threaded pin 41.
  • the element 36 of the power amplifier 13 bears against the screw 45, so that the power amplifier is supported by the adjustable screw 45 during the tensioning process.
  • the abutment plate 42 is fastened to the vice body and is of the same design as the abutment plate 44.
  • the abutment plate 42 receives the screw bushing 43 in the threaded bore 47, the gradation 32 of which forms the abutment for the power amplifier 14.
  • the parallel key bushing 40 is designed in two parts and consists of the coupling elements 49 and 50. These coupling elements can be rotated relative to one another by means of the screws 58, which engage in a threaded bore of the coupling element 49 and one for each in the coupling element 50 Slot 59 is provided. This makes it possible to rotate the coupling elements against each other when screws 58 are loosened and to fix them in a predetermined position. If desired, the adjusted position can be secured by a dowel pin 60. However, it is also possible to provide, for example, fine toothing between the coupling elements 49 and 50 in order to secure the set mutual position of the two coupling elements 49 and 50.
  • a spindle nut 51 in the form of a threaded bushing is provided between the spindle part 11 and the slide 3.
  • the internal thread 53 of the spindle nut 51 cooperates with the spindle part 11, while the external thread 52 engages in a thread in the slide 3.
  • the pitch of the threads 52 and 53 are different, so that an axial movement of the slide 3 with respect to the central plane 39 can be achieved by rotating the spindle nut 51.
  • the threaded pin 41 is used to fix the adjusted position.
  • the vice body 1 is placed on the base plate 46 via the sliding blocks 61. Laterally the base plate 46 is in one Bock 62 mounted an adjusting screw 63 through which the vice body 1 can be moved relative to the base plate 46 for the purpose of adjustment.
  • the locking means 54, 55 and 56 which are designed as clamping claws, the adjusted elements can be fixed.
  • the adjustment process can be simplified by means of a feeler 64 and a test piece 65.
  • the entire unit, consisting of the vice body 1 and the base plate 46 can be positioned with the machine table 66 by means of a sliding block 67 and clamped by means of the claws 68.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
EP90114316A 1989-08-03 1990-07-26 Dispositif sur des étaux de machines pour serrer et centrer des pièces à usiner Withdrawn EP0411472A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925717 1989-08-03
DE19893925717 DE3925717A1 (de) 1989-08-03 1989-08-03 Vorrichtung an maschinenschraubstoecken zum zentrischen spannen von werkstuecken

Publications (1)

Publication Number Publication Date
EP0411472A1 true EP0411472A1 (fr) 1991-02-06

Family

ID=6386455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114316A Withdrawn EP0411472A1 (fr) 1989-08-03 1990-07-26 Dispositif sur des étaux de machines pour serrer et centrer des pièces à usiner

Country Status (3)

Country Link
EP (1) EP0411472A1 (fr)
JP (1) JPH03142172A (fr)
DE (1) DE3925717A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2191502A1 (es) * 1996-05-30 2003-09-01 Kreuzer Konrad Tensor de alta presion con servoamplificador.
EP1813389A3 (fr) * 2006-01-27 2009-02-18 Wilhelm Erhard Etau de précision pour machine-outil
US20140339186A1 (en) * 2013-05-16 2014-11-20 Control Techniques Limited Device For Locking To A DIN Rail
WO2017060345A1 (fr) * 2015-10-06 2017-04-13 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Dispositif préhenseur ou de serrage pourvu d'un élément de réglage
DE102020107967A1 (de) 2020-03-23 2021-09-23 Ralf Klerks Spannvorrichtung

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0570841U (ja) * 1991-10-21 1993-09-24 日本オートマチックマシン株式会社 マシンバイス
JP4583794B2 (ja) * 2004-03-31 2010-11-17 株式会社テック・ヤスダ バイス
JP4786348B2 (ja) * 2006-01-16 2011-10-05 津田駒工業株式会社 増力装置付バイス
JP5837333B2 (ja) * 2011-05-27 2015-12-24 株式会社テック・ヤスダ ワークバイス
JP6674805B2 (ja) * 2016-03-16 2020-04-01 株式会社ナベヤ センタリング調整機能付きマシンバイス
JP2018153904A (ja) * 2017-03-21 2018-10-04 株式会社北川鉄工所 バイス
US20180345431A1 (en) * 2017-06-05 2018-12-06 Robert Thomas Wilson Centering Fixture
DK3685963T3 (da) * 2019-01-28 2022-07-18 Oml Srl Klemmeanordning, specielt et skruestik

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD30740A (fr) *
DE948680C (de) * 1951-05-26 1956-09-06 Hans Kohn Vorrichtung nach Art eines Schraubstockes zum Spannen von Werkstuecken

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD30740A (fr) *
DE948680C (de) * 1951-05-26 1956-09-06 Hans Kohn Vorrichtung nach Art eines Schraubstockes zum Spannen von Werkstuecken

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2191502A1 (es) * 1996-05-30 2003-09-01 Kreuzer Konrad Tensor de alta presion con servoamplificador.
EP1813389A3 (fr) * 2006-01-27 2009-02-18 Wilhelm Erhard Etau de précision pour machine-outil
US20140339186A1 (en) * 2013-05-16 2014-11-20 Control Techniques Limited Device For Locking To A DIN Rail
US9312667B2 (en) * 2013-05-16 2016-04-12 Control Techniques Limited Device for locking to a DIN rail
WO2017060345A1 (fr) * 2015-10-06 2017-04-13 Schunk Gmbh & Co. Kg Spann- Und Greiftechnik Dispositif préhenseur ou de serrage pourvu d'un élément de réglage
DE102020107967A1 (de) 2020-03-23 2021-09-23 Ralf Klerks Spannvorrichtung
WO2021191198A1 (fr) 2020-03-23 2021-09-30 Ralf Klerks Dispositif de serrage

Also Published As

Publication number Publication date
JPH03142172A (ja) 1991-06-17
DE3925717A1 (de) 1991-02-07

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