EP0509265B1 - Spannkrafteinstellvorrichtung für eine Spannvorrichtung - Google Patents

Spannkrafteinstellvorrichtung für eine Spannvorrichtung Download PDF

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Publication number
EP0509265B1
EP0509265B1 EP92104834A EP92104834A EP0509265B1 EP 0509265 B1 EP0509265 B1 EP 0509265B1 EP 92104834 A EP92104834 A EP 92104834A EP 92104834 A EP92104834 A EP 92104834A EP 0509265 B1 EP0509265 B1 EP 0509265B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
housing
stop shoulder
belleville springs
tension
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
EP92104834A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0509265A2 (de
EP0509265A3 (en
Inventor
Heinrich Dipl.-Ing. Berchtold
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.)
Gressel AG
Original Assignee
Gressel AG
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 Gressel AG filed Critical Gressel AG
Publication of EP0509265A2 publication Critical patent/EP0509265A2/de
Publication of EP0509265A3 publication Critical patent/EP0509265A3/de
Application granted granted Critical
Publication of EP0509265B1 publication Critical patent/EP0509265B1/de
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
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • 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

Definitions

  • the invention relates to a clamping force adjusting device for a clamping device, in particular a machine vise, with a hollow housing which is supported indirectly or directly on a movable clamping part (clamping jaws) thereof, which is optionally designed as a handle connected to a screw spindle, with a through the housing and compared to this rotatable and displaceable tie rod, the first end of which can be coupled to a power amplifier and the second end of which carries a tension sleeve which is fixed to this end and is provided with a support flange and which, in turn, is axially interposed with the interposition of an adjusting sleeve which can be adjusted axially by means of a fine thread, an axial bearing and several disc springs acts on the housing.
  • the housing is connected to a screw spindle and is designed as a hollow handle.
  • the screw spindle engages in the movable clamping jaw of a machine vice.
  • the screw spindle is hollow and the pull rod is guided through it, the first end of which is connected to a power amplifier arranged below the fixed clamping jaw.
  • the adjusting sleeve can be adjusted by means of a fine thread.
  • the adjusting sleeve is supported directly on disc springs, which in turn are supported on an axial bearing.
  • This thrust bearing in turn rests on the one hand on the support flange of the tension sleeve and on the other hand also on the housing.
  • the preload of the disc springs can be changed and the desired clamping force can be preset.
  • the spring force of the disc springs is so great that a tool, for example an open-ended wrench, is required to adjust the adjusting sleeve and the adjustment can nevertheless only be made with considerable effort.
  • the invention is therefore based on the object of providing a clamping force adjusting device for a clamping device, in particular a machine vice, of the type mentioned at the beginning, in which the clamping force can be easily adjusted by hand and without tools when the clamping device is relaxed.
  • the support flange is provided on the end of the tension sleeve adjacent to the second end of the pull rod and the axial bearing is arranged on the side of the support flange facing away from the second pull rod end in that the plate springs are supported directly in the housing, that between them and the axial bearing is provided on the one hand on this and on the other hand on the disc springs intermediate sleeve, and that the adjusting sleeve can be screwed into a fine thread of the housing and on its end facing the disc springs has a radially inwardly directed, first stop shoulder, which with a radially outwardly directed, second stop shoulder of the intermediate sleeve and / or a spacer ring bearing against the axial bearing cooperates in such a way that by screwing the adjusting sleeve relative to the housing, the axial distance of the first stop shoulder from the second stop shoulder or the spacer ing adjustable in the relaxation position and thereby the stroke of the intermediate sleeve
  • the adjusting sleeve in the new clamping force setting device is not supported on the axial bearing or on the plate springs in the relaxed position of the clamping device, no axial forces act on it in the relaxed position.
  • the adjusting sleeve for adjusting the clamping force can be easily turned by hand without tools and thus the desired clamping force can be easily set.
  • This clamping force is easily read on a scale attached to the adjusting sleeve. If a minimum clamping force is set, the first stop shoulder is at the greatest distance from the second stop shoulder or the spacer ring. This distance corresponds at least to the clamping stroke of the power amplifier.
  • the pull rod is moved through the housing in such a way that the pull sleeve approaches the disc springs.
  • the tension sleeve with the interposition of the thrust bearing and the intermediate sleeve, compresses the disc springs.
  • the clamping force then corresponds to the spring force achieved by the compression of the disc springs. If, on the other hand, the adjusting sleeve is rotated relative to the housing to the maximum clamping force, then with this setting of the clamping force, the inwardly directed first stop shoulder moves towards the second stop shoulder or the spacer ring and comes to rest against it.
  • the adjusting sleeve is set to a position between maximum and minimum clamping force, then the distance between its stop shoulder and the stop shoulder of the intermediate sleeve or the spacer ring is smaller than the clamping stroke of the booster.
  • the disk springs are first compressed by a certain distance during the clamping stroke, whereby a certain spring force is generated.
  • the stop shoulder of the adjusting sleeve comes into contact with the stop shoulder or the spacer ring and the remaining remaining clamping stroke of the power amplifier now causes the elastic deformation of the components of the clamping device involved in the tension.
  • the remainder of the clamping stroke is smaller than the maximum clamping stroke, a clamping force lying between the minimum and the maximum clamping force is achieved.
  • the tensioning device has a hollow housing 1, which in the exemplary embodiment shown is designed as a handle 1 a and can be connected to a screw spindle 2 in a rotationally fixed and tensile manner.
  • This screw 2 engages how 3 can be seen in a spindle nut 3, which can be connected to a movable jaw 4 of a vice.
  • a pull rod 5 is rotatably and axially displaceable, the first end 5a of which can be connected to a power amplifier (not shown).
  • This force booster can be arranged under the fixed jaw of a machine vice and is actuated, for example, by turning the pull rod 5, similarly as described in the aforementioned EP-A-0 463 344.
  • the adjustable clamping jaw By turning the screw spindle 2 by means of the handle 1 a, the adjustable clamping jaw can be adjusted in the direction B and thus the span of the machine vice can be adjusted. If the clamping force adjusting device is to be used on a clamping device with a predetermined clamping width, then the hollow screw spindle 2 is omitted. In this case, the housing 1 is supported directly on the movable clamping jaw 4.
  • the pull rod 5 is guided through the housing 1.
  • a tension sleeve 6 is screwed on or fixed in some other way.
  • This tension sleeve 6 has a support flange 7 at its end adjacent to the second end 5b.
  • An axial bearing 8 is supported on the side of this support flange 7 facing away from the second tie rod end 5b.
  • a plurality of disc springs 9 are supported directly in the housing 1 at its end 1b facing the movable jaw 4.
  • An intermediate sleeve 10 is arranged between the plate springs 9 and the axial bearing 8, sufficient clearance being provided between this intermediate sleeve 10 and the pull sleeve 6 so that the pull sleeve 6 can rotate relative to the intermediate sleeve 10.
  • the intermediate sleeve 10 has at its end facing the plate springs 9 a radially outwardly directed flange 11 which is supported on the plate springs 9.
  • the flange 11 is held axially on the side facing away from the plate springs 9 by a locking ring (circlip) 12 inserted into an annular groove in the housing 1.
  • the locking ring 12 can be arranged so that the plate springs 9 are already preloaded to a desired extent when the flange 11 and the locking ring 12 are inserted.
  • An adjusting sleeve 13 is also provided, which can be screwed axially by means of a fine thread 14 in the housing 1, more precisely in the housing part 1a.
  • the adjusting sleeve 13 carries a scale ring 15.
  • the adjusting sleeve 13 has a radially inwardly directed stop shoulder 16 at its end located within the housing 1.
  • This first stop shoulder 16 interacts with a second stop shoulder 17 provided on the intermediate sleeve 10 and / or with a spacer ring 18 which rests on the axial bearing 8.
  • the second stop shoulder 17 on the intermediate sleeve 10 is expediently formed by a retaining ring 17 inserted into an annular groove thereof.
  • This retaining ring 17 is partially surrounded by the spacer ring 18, the arrangement being such that the axial thickness of the spacer ring 18 corresponds to the distance that the side of the retaining ring facing the first stop shoulder 16 has from the end of the intermediate sleeve 10 which is on the thrust bearing 8 is present.
  • a disk 19 covering the locking ring 17 and the spacer ring 18 can also be provided.
  • the adjusting sleeve Since the adjusting sleeve is not acted upon by the plate springs 9 in the relaxed position of the clamping force adjusting device, it can be rotated very easily relative to the housing 1.
  • two radial bores 20 are provided in the stop shoulder 16 of the adjusting sleeve 13.
  • a compression spring 21 and a detent ball 22 are arranged in each of these bores.
  • the bores 20 are closed radially outwards by a ring 23 surrounding the adjusting sleeve 13.
  • the outer circumferential surface of the intermediate sleeve 10 is provided with a plurality of axial grooves 24 which are offset in the circumferential direction and which serve to engage the locking balls 22.
  • a friction ring (brake ring) can be provided between the adjusting sleeve 13 and the intermediate sleeve 10 or else the hollow handle 1a, which then enables the adjusting sleeve 13 to be adjusted continuously relative to the housing 1.
  • the clamping force setting device works as follows: In Figure 1, the clamping device is shown with minimal clamping force setting in a relaxed position. Here, the adjusting sleeve 13 is screwed so far into the housing 1 that a distance A is present between the first stop shoulder 16 and the intermediate disk 19, which is somewhat larger than the maximum clamping stroke of the power amplifier.
  • the power amplifier not shown, can be actuated by rotating the pull rod 5 by means of a hand lever attached to its end 5b. During the clamping stroke of the power amplifier, the pull rod 5 thus moves in the direction C relative to the housing 1, this clamping stroke, however, being only approximately 1-1.5 mm.
  • the pull rod takes the pull sleeve fixed on it 6 left with.
  • the disc springs 9 are compressed via the axial bearing 8 and the intermediate sleeve 10 and their flange 11. With a full clamping stroke, however, the intermediate disk 19 does not come into contact with the stop shoulder 16 with a minimal clamping force setting.
  • the plate springs 9 press the housing 1 and thus also the screw spindle 2 and the clamping jaw 4 to the left with a clamping force which corresponds to the spring force generated by the compression of the plate springs 9.
  • the clamping device is shown with maximum clamping force setting.
  • the adjusting sleeve 13 was screwed so far to the right relative to the housing 1 that its stop shoulder 16 abuts on the intermediate disk 19 and thus a direct frictional connection between the support flange 7 and the stop shoulder 16 with the interposition of the axial bearing 8, the spacer ring 18, the retaining ring 17 and the washer 19 is made. If the tension rod 5 is now pulled in the direction C during the tension stroke of the power amplifier, the force flow takes place from the pull sleeve 6 via the latter parts to the stop shoulder 16 of the adjusting sleeve 13 and from there via the fine thread 14 to the housing 1.
  • the plate springs 9 are in this Case not burdened by tension forces.
  • the clamping stroke of the power amplifier leads to an elastic deformation of the various vice components involved in the clamping, such as pull rod 5, spindle 2, spindle nut 3, movable clamping jaw 4, fixed clamping jaw and vice base.
  • the desired high clamping force of, for example, 40 kN can be built up.
  • the adjusting sleeve 13 To preset an average clamping force lying between the minimum and the maximum clamping force, the adjusting sleeve 13 is in a rotational position relative to the Housing 1 rotated, in which the distance A between its stop shoulder 16 and the washer 19 corresponds to a size which is between zero and the maximum clamping stroke of the power amplifier.
  • the adjusting sleeve 13 can be rotated into ten to twenty intermediate positions and thus ten to twenty different presetting force settings can be made, which lie between the minimum and the maximum clamping force. If the pull rod 5 is now moved to the left with an average clamping force setting during the clamping stroke, then the pull sleeve 6 can move to the left until the intermediate disk 19 lies against the stop shoulder 16.
  • the clamping force adjusting device according to the invention can also be applied to pressure spindles by reversal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Jigs For Machine Tools (AREA)
  • Vehicle Body Suspensions (AREA)
  • Body Structure For Vehicles (AREA)
  • Sealing Of Jars (AREA)
EP92104834A 1991-04-17 1992-03-20 Spannkrafteinstellvorrichtung für eine Spannvorrichtung Expired - Lifetime EP0509265B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4112547A DE4112547A1 (de) 1991-04-17 1991-04-17 Spannkrafteinstellvorrichtung fuer eine spannvorrichtung
DE4112547 1991-04-17

Publications (3)

Publication Number Publication Date
EP0509265A2 EP0509265A2 (de) 1992-10-21
EP0509265A3 EP0509265A3 (en) 1993-03-10
EP0509265B1 true EP0509265B1 (de) 1995-05-24

Family

ID=6429795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104834A Expired - Lifetime EP0509265B1 (de) 1991-04-17 1992-03-20 Spannkrafteinstellvorrichtung für eine Spannvorrichtung

Country Status (6)

Country Link
US (1) US5192062A (ja)
EP (1) EP0509265B1 (ja)
JP (1) JP3200144B2 (ja)
KR (1) KR100226647B1 (ja)
AT (1) ATE122950T1 (ja)
DE (1) DE4112547A1 (ja)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5691976A (en) * 1992-04-02 1997-11-25 Applied Digital Access Performance monitoring and test system for a telephone network
US5531428A (en) * 1994-12-19 1996-07-02 Dembicks; Andrew E. Adjustable closure force control device for a bench vise and method
DE19615335C1 (de) * 1996-04-18 1997-10-02 Gressel Ag Spannvorrichtung mit mechanischem Kraftverstärker
US5683077A (en) * 1996-05-10 1997-11-04 Fink; Paul David Vise handle with torque control
US6361442B1 (en) * 2000-01-19 2002-03-26 Protech Engineering Repeatable preset torquing force vise handle for producing repeatable clamping force in a vise
US6953311B2 (en) * 2003-08-27 2005-10-11 Ksi Technologies Corp. Tool holding and working piece-clamping assembly for a machine tool
KR100689272B1 (ko) * 2004-08-19 2007-03-08 주식회사 에스엠씨 바이스용 증압 조절장치
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
JP4837650B2 (ja) * 2007-11-19 2011-12-14 株式会社武田機械 バイス
KR100969350B1 (ko) * 2010-01-12 2010-07-09 현성정밀 주식회사 부선의 포스트 클램핑장치
US8690138B2 (en) * 2010-12-29 2014-04-08 Tseh-Pei LIN Coaxial concentric double-jaw vice
US9630284B2 (en) * 2012-07-12 2017-04-25 Lincoln Global, Inc. Configurable welding table and force indicating clamp
CN102922450B (zh) * 2012-11-15 2014-11-05 江苏科技大学 一种用于圆柱面试件的夹紧装置
KR101486958B1 (ko) 2013-05-14 2015-01-29 주식회사 에스엠씨 척3000 증압형 바이스의 편중가압 방지장치
CN107297636A (zh) * 2017-07-24 2017-10-27 嘉善优联物流装备有限公司 一种夹持设备
CN111168441B (zh) * 2020-03-16 2024-04-16 沈阳飞机工业（集团）有限公司 无应力压紧装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095190A (en) * 1960-09-10 1963-06-25 Hilma G M B H Maschf Pneumatic hydraulic vise
DE1812325A1 (de) * 1968-12-03 1970-07-23 Arnold Franz Mechanische Spannvorrichtung,insbesondere Maschinenschraubstock
DE2060881C3 (de) * 1970-12-10 1975-02-06 Franz 8960 Kempten Arnold Mechanische Spanneinrichtung, insbesondere Maschinenschraubstock
US4046364A (en) * 1976-10-01 1977-09-06 Stevens Engineering Torque limiting vise for holding work on a machine tool table
DE2710424A1 (de) * 1977-03-10 1978-09-14 Roehm Guenter H Spanneinrichtung, insbesondere maschinenschraubstock
IT1168021B (it) * 1980-10-22 1987-05-20 Saurer Allma Gmbh Dispositivo di bloccaggio, azionato pneumaticamente, in particolare morsa da macchina
US4599719A (en) * 1984-06-18 1986-07-08 At&T Information Systems Inc. Full duplex data set with half-duplex emulation
DE3732900A1 (de) * 1987-09-30 1989-04-20 Peddinghaus Carl Ullrich Dr Spanneinrichtung, insbesondere maschinenschraubstock
DE4018284C1 (ja) * 1990-06-07 1991-04-18 Gressel Ag, Aadorf, Thurgau, Ch

Also Published As

Publication number Publication date
KR100226647B1 (ko) 1999-10-15
US5192062A (en) 1993-03-09
EP0509265A2 (de) 1992-10-21
EP0509265A3 (en) 1993-03-10
JPH06262535A (ja) 1994-09-20
DE4112547A1 (de) 1992-10-22
DE4112547C2 (ja) 1993-02-04
ATE122950T1 (de) 1995-06-15
KR920019487A (ko) 1992-11-19
JP3200144B2 (ja) 2001-08-20

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