EP0215326A2 - Dispositif de serrage - Google Patents

Dispositif de serrage Download PDF

Info

Publication number
EP0215326A2
EP0215326A2 EP86111577A EP86111577A EP0215326A2 EP 0215326 A2 EP0215326 A2 EP 0215326A2 EP 86111577 A EP86111577 A EP 86111577A EP 86111577 A EP86111577 A EP 86111577A EP 0215326 A2 EP0215326 A2 EP 0215326A2
Authority
EP
European Patent Office
Prior art keywords
leg
tie rod
clamping
clamping jaw
housing
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
EP86111577A
Other languages
German (de)
English (en)
Other versions
EP0215326B1 (fr
EP0215326A3 (en
Inventor
Werner Heine
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.)
Georg Kesel GmbH and Co KG
Original Assignee
Georg Kesel GmbH and Co KG
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 Georg Kesel GmbH and Co KG filed Critical Georg Kesel GmbH and Co KG
Priority to AT86111577T priority Critical patent/ATE69190T1/de
Publication of EP0215326A2 publication Critical patent/EP0215326A2/fr
Publication of EP0215326A3 publication Critical patent/EP0215326A3/de
Application granted granted Critical
Publication of EP0215326B1 publication Critical patent/EP0215326B1/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
    • B25B1/10—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
    • 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

Definitions

  • the invention relates to a clamping device, in particular precision high-pressure clamps, with a housing, a clamping jaw fixed to the housing, a separate, approximately U-shaped tie rod arranged in the housing, one leg of which engages behind the fixed clamping jaw and the other leg forms a threaded nut penetrated by a screw spindle , wherein one end of the screw spindle engages behind a displaceable clamping jaw and the clamping surfaces of both clamping jaws are parallel.
  • Such a tensioning device is known from DE-PS 30 00 162.
  • the upper part of the front surface of one U-leg lies in a plane parallel to the clamping surface.
  • the rear surface of the fixed jaw is also flat in this area. With these two flat surfaces, one leg of the tie rod and the fixed clamping jaw touch each other. In this area, the tie rod is screwed to the fixed jaw using two screws.
  • the housing can be relieved to a certain extent of deformation forces with this known clamping device, the fixed clamping jaw becomes high due to the rigid connection with one leg of the tie rod Clamping forces are still slightly tilted, so that precision machining is only imperfectly possible.
  • a tensioning device of the type mentioned is also known, in which the one leg of the tie rod has a cross pin protruding from this on both sides.
  • the protruding bolt ends are accommodated in the bearing recesses of the fixed clamping jaw, the recess radius being the same as the radius of the bolt ends.
  • the bolt ends therefore lie flat against the inner surfaces of the bearing troughs. Thanks to the swivel connection achieved between one leg of the tie rod and the fixed clamping jaw, no more tilting moment is transmitted to the latter.
  • the disadvantage is that the entire clamping force has to be absorbed by the protruding bolt ends, which leads to a bolt deformation at high clamping forces and thus to damage to the clamping device.
  • Another disadvantage is that an extremely precise production would be required so that both pin ends bear evenly. In practice, this is only possible with extraordinary processing effort. This proposal is also unsuitable for high pressure vices.
  • the object of the invention is to design a tensioning device of the type mentioned at the outset in such a way that it is low Costs can be produced, is suitable for high clamping forces, deformation of the housing or its fixed clamping jaw is absolutely prevented and even off-center clamping with high clamping force is permitted.
  • the tensioning device is to be designed in such a way that a desired tensioning force can be controlled by manual operation.
  • This output is achieved in a tensioning device of the type mentioned in the introduction that between the one leg of the tie rod and the fixed clamping jaw there is an approximately linear contact which extends over at least the major part of the leg width and that the tie rod is self-adjusting suspended in the housing in such a floating manner that it can be pivoted to a limited extent about an imaginary axis that crosses the contact line between the one leg and the fixed clamping jaw on the one hand and the housing bottom surface on the other hand.
  • the tie rod can also be moved in all directions in a plane parallel to the clamping surface and also to a limited extent at right angles to it.
  • the essence of the invention is that the area of the power transmission zone between the one Leg of the tie rod and the fixed clamping jaw on the one hand and the holding means for the tie rod in the housing are separated from one another.
  • the holding means ensure all-round mobility of the tie rod in the housing, with the success that the tie rod aligns itself automatically in all clamping positions and does not exert any deformation forces on the fixed clamping jaw. Despite savings in manufacturing costs, better parallelism of the clamping surfaces is ensured even with high clamping forces and even when workpieces are clamped off-center.
  • one leg of the tie rod in the region of the contact line has a nose which is convexly rounded in cross section, and that a space gap extending up to the yoke of the tie rod is formed adjacent to the nose between the one leg and the fixed clamping jaw.
  • the rounded nose of one leg of the tie rod is comparatively easy to manufacture.
  • the counter surface of the fixed jaw is also easy to produce as a flat surface. The correct positioning of the tie rod in such a way that the nose evenly touches the fixed clamping jaw over the entire width of the nose does not require special attention be given, because thanks to the floating mounting of the tie rod, self-adjustment takes place during operation.
  • the front surface of one leg of the tie rod can also be flat, e.g. lies in a plane parallel to the clamping surface if a corresponding nose-like projection is provided on the rear surface of the fixed clamping jaw, which projection forms the contact line with one leg of the tie rod.
  • the floating mounting of the tie rod can be achieved according to a further development of the invention in that an approximately trough-like recess is provided in each of the two side surfaces of one leg, in which spring-mounted, transversely aligned bolts engage in the fixed clamping jaw. These bolts ensure a certain amount of displacement play in the trough-like recesses, so that the tie rod can move in all directions parallel to the clamping surface but also at an angle to it and can pivot not only about the contact line but also perpendicular to it.
  • a third alternative to the floating mounting of the tie rod is that elastically deformable connecting means are provided between the tie rod and the housing, preferably in such a way that the gaps formed between the tie rod and the housing are poured out by an elastic mass.
  • the tie rod is permanently connected to the housing. Removing the tie rod is also possible no longer necessary, since the gaps are poured out elastically, so that no metal chips and other contaminants could enter there.
  • a very favorable solution for this is that a gap is formed between part of the front surface of one leg of the tie rod and the rear surface of the fixed clamping jaw facing this, and that a pressure indicator device is installed in one leg of the tie rod has a movable take-off member that passes through the gap and rests on the fixed jaw.
  • the pressure indicator preferably comprises an indicator disc with a pointer.
  • the fixed clamping jaw has an upper wall which overlaps one leg of the tie rod and is provided with a viewing window, below which the indicator disc is located. Since the tie rod is deformed in accordance with the tension force and in such a way that one leg of the tie rod is inclined with increasing tension force the gap width between the leg and the fixed jaw is reduced. The removal link is shifted accordingly and this shift is indicated by turning the pointer.
  • the indicator disc preferably has colored fields, so that it can be seen at a glance whether the instantaneous clamping force is in the desired range.
  • the pressure detection device comprises an electrical switch which responds to a certain deformation of the tie rod and closes the circuit of a processing machine.
  • the switch is preferably arranged to be adjustable with a movement component in the clamping direction. If a workpiece is not properly clamped due to carelessness, conventional clamping devices can damage very valuable processing machines. The invention prevents this because as long as an adjustable minimum clamping pressure is not achieved, the processing machine cannot be started. As soon as the minimum clamping pressure has been reached, the switch responds and closes the circuit of the processing machine, for example via ultra-sound or infrared remote transmission.
  • U-shaped tie rod 16 which has a first leg 18, a yoke 20 extending along the vise and a second leg 22 which has a threaded nut for a screw spindle 24 forms, one end of which engages behind a movable clamping jaw 26 which is displaceably guided on the housing 12 in longitudinal rails, is characterized in that the tie rod 16 is floatingly supported in the housing 12 by means of a three-point suspension is.
  • the tie rod 16 with the two legs 18, 22 and the yoke 20 could form a one-piece component.
  • the other leg 22 on the yoke 20 of the tie rod 16 is arranged so that it can be adjusted in stages by means of plug pins 28.
  • the tie rod leg 18 has a trough-like depression 30 on each of its two side surfaces.
  • the two depressions 30 are aligned transversely.
  • the side walls of the fixed clamping jaw 14 have coaxial transverse bores 32, in each of which a locking bolt 34, a compression spring 36 and a threaded piece 38 are located.
  • the threaded pieces 38 are screwed so far into the transverse bores 32 that the locking bolts 34 penetrate the trough-like recesses 30 of the tie rod leg 18 with a certain preload.
  • the latching bolts 34 and the depressions 30 are designed with respect to one another such that a relative displacement in all directions parallel to the side surfaces of the leg 18 is possible.
  • the trough-like depressions 30 are, for example, conical, while the front surfaces of the locking bolts 34 are hemispherical.
  • the springs 36 seek to adjust the tie rod 16 so that the transverse axis containing the centers of the trough-like depressions 30 is aligned with the transverse axis of the bores 32 collapses.
  • the upper end of the left leg 18 facing the clamping zone is designed in the form of a nose 40 which is rounded in cross section.
  • the nose 40 is adjoined by an oblique flat front surface 42 of the leg 18, which encloses an angle of approximately 5 ° with a plane 44 parallel to the clamping surface.
  • the rear surface 46 (FIG. 8) of the fixed clamping jaw 14 lies in the clamped state in the plane designated 44, so that a gap 48 forms below the nose 40, which gradually widens towards the yoke 20 of the tie rod 16.
  • the leg 18 of the tie rod 16 is made of solid material.
  • the yoke 20, however, has a U-shaped cross section, in which the other leg 22 engages.
  • the cross-sectional contour of the leg 18 is the same over the entire tie rod width.
  • the trough-like depressions 30 in the leg 18 and the bores 32 in the fixed clamping jaw 14 are arranged such that the nose 40 roughly touches the rear surface 46 of the fixed clamping jaw with mutual transverse alignment.
  • the tie rod 16 automatically aligns itself with the Art that the locking pin 34 shift in the trough-like recesses 30 such that a continuous contact of the nose 40 on the rear surface 46 of the fixed jaw 14 takes place theoretically along a line of contact.
  • the tie rod deforms and the nose 40 rolls on the rear surface 46, but line contact is still retained.
  • FIG. 5 illustrates an alternative to the floating mounting of the tie rod leg 18.
  • the side walls of the fixed clamping jaw 14 have transversely aligned bores 50, into which elastically deformable sleeves 52 are inserted.
  • the leg 18 has a coaxial bore with an inner diameter equal to that of the elastic sleeves 52.
  • a plug pin 54 passes through the bore of the leg 18 and the elastic sleeves 52.
  • FIGURES 6 and 7 illustrate a third alternative to the floating mounting of the tie rod 16.
  • the tie rod 16 is connected to the housing 12 on the bottom side and on both side surfaces over its entire length by means of elastic layers 56, 58. I.e. the gaps formed between tie rod 16 and housing are filled with elastic material.
  • the elastic material ensures a self-adjustment of the tie rod 16 during the tensioning process and at the same time prevents metal chips from penetrating into the gaps. An additional mechanical mounting of the tie rod 16 on the housing 12 is thus eliminated.
  • a so-called commercially available pressure cell 60 is installed in the leg 18 of the tie rod 12, which has an indicator disc 66, which is located under a viewing window 62 in an upper wall 64 of the fixed clamping jaw 14 covering the leg 18, and has a pressure pin 68, which penetrates the gap 48 between the mutually facing surfaces 42 and 46 of the leg 18 or the fixed clamping jaw 14 and abuts the rear surface 46 of the fixed clamping jaw 14.
  • the leg 18 pivots to the left relative to the yoke 20 of the tie rod 16, as a result of which the width of the gap 48 is reduced.
  • the pin 68 thereby moves into the interior of the display device 60. This inward movement of the pin 68 is converted by a built-in gear into a rotation of a pointer 70 playing above the display disk 66.
  • an electrical switch 72 is inserted in the leg 18 of the tie rod 16, the function of its movable switching pin 74 corresponds to that of the pin 68 of the display device 60.
  • the two power cables 76 are in the control circuit for starting a processing machine or are connected to a transmitter which controls a corresponding receiver of the processing machine.
  • the switch 72 is open below a certain clamping force. When the clamping force is increased, the tie rod 16 deforms. The width of the gap 48 decreases and the switch 72 closes, as a result of which the processing machine circuit is activated. Damage to the processing machine due to an insufficiently clamped workpiece is therefore excluded.
  • the response level of the switch 72 can be adjusted in that a threaded ring 80 is attached to the sleeve 78 or is formed integrally therewith.
  • the threaded ring 80 can be screwed into a corresponding threaded section of the receiving bore for the sleeve 78.
  • a transverse fixing screw 82 secures the switch sleeve 78 in the desired position.
  • the response level of the switch 72 is preselected by screwing the collar sleeve 78 using spacers 84.
  • the fixation is in turn carried out by the setscrew 82.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Clamps And Clips (AREA)
  • Jigs For Machine Tools (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP86111577A 1985-09-12 1986-08-21 Dispositif de serrage Expired - Lifetime EP0215326B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111577T ATE69190T1 (de) 1985-09-12 1986-08-21 Spanngeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853532490 DE3532490A1 (de) 1985-09-12 1985-09-12 Spanngeraet
DE3532490 1985-09-12

Publications (3)

Publication Number Publication Date
EP0215326A2 true EP0215326A2 (fr) 1987-03-25
EP0215326A3 EP0215326A3 (en) 1988-10-05
EP0215326B1 EP0215326B1 (fr) 1991-11-06

Family

ID=6280733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111577A Expired - Lifetime EP0215326B1 (fr) 1985-09-12 1986-08-21 Dispositif de serrage

Country Status (5)

Country Link
US (1) US4664365A (fr)
EP (1) EP0215326B1 (fr)
AT (1) ATE69190T1 (fr)
DE (2) DE3532490A1 (fr)
ES (1) ES2002333A6 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001258A1 (fr) * 1997-07-03 1999-01-14 Chick Workholding Solutions, Inc. Mors amovible pour etau et procede de fixation d'un mors a un etau

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4759535A (en) * 1986-05-31 1988-07-26 Tamotsu Takasugi Machine vice
US7651078B2 (en) * 2003-12-12 2010-01-26 Irwin Industrial Tool Company Clamping and/or spreading tool
US7131642B1 (en) 2005-09-28 2006-11-07 Stanley Tools And Hardware Adjustable clamp
US7090209B1 (en) 2005-09-28 2006-08-15 Stanley Tools And Hardware Adjustable clamp and method of using an adjustable clamp
US7604224B2 (en) * 2005-09-28 2009-10-20 The Stanley Works Motorized clamp
US7389978B2 (en) * 2005-09-28 2008-06-24 The Stanley Works Adjustable clamp
US8870044B1 (en) * 2009-03-31 2014-10-28 Brica, Inc. Snack and drink holder
KR200477867Y1 (ko) * 2013-03-20 2015-07-30 윤환식 공작물 고정용 바이스
CN105041793A (zh) * 2015-06-09 2015-11-11 郭斌 一种石膏烘干机烘箱板角紧固器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882656A (en) * 1957-07-19 1959-04-21 Manchester Machine & Tool Co Squaring fixture
US3312461A (en) * 1964-10-16 1967-04-04 Glenn A Copron Vise
GB1181398A (en) * 1967-11-01 1970-02-18 Kenneth Reginald Beetlestone A New or Improved Vice
GB1185702A (en) * 1967-01-31 1970-03-25 Carolyn Rosemary Soar Improvements in or relating to Engineering Vices
EP0015207A1 (fr) * 1979-02-20 1980-09-03 Etablissements BOUCHER Frères Société à responsabilité limitée dite: Dispositif permettant de maintenir une pièce à usiner dans une position déterminée par rapport à une machine-outil sur laquelle il peut être fixé
US4221369A (en) * 1979-06-28 1980-09-09 Tamotsu Takasugi Machine vise
FR2559085A2 (fr) * 1984-02-02 1985-08-09 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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2889729A (en) * 1955-12-28 1959-06-09 Orner Harry Apparatus for screw tensioning to elongation values
JPS6023950B2 (ja) * 1978-11-01 1985-06-10 保 高杉 マシンバイス
US4328709A (en) * 1980-04-18 1982-05-11 Schramm Wayne E Electronic audio visual torque indicator adapter
US4569509A (en) * 1984-04-02 1986-02-11 Johann Good Vise, particularly a machine vise
ATE27239T1 (de) * 1984-05-26 1987-06-15 Wille Gmbh & Co Einarmiger drehmomentschluessel.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2882656A (en) * 1957-07-19 1959-04-21 Manchester Machine & Tool Co Squaring fixture
US3312461A (en) * 1964-10-16 1967-04-04 Glenn A Copron Vise
GB1185702A (en) * 1967-01-31 1970-03-25 Carolyn Rosemary Soar Improvements in or relating to Engineering Vices
GB1181398A (en) * 1967-11-01 1970-02-18 Kenneth Reginald Beetlestone A New or Improved Vice
EP0015207A1 (fr) * 1979-02-20 1980-09-03 Etablissements BOUCHER Frères Société à responsabilité limitée dite: Dispositif permettant de maintenir une pièce à usiner dans une position déterminée par rapport à une machine-outil sur laquelle il peut être fixé
US4221369A (en) * 1979-06-28 1980-09-09 Tamotsu Takasugi Machine vise
FR2559085A2 (fr) * 1984-02-02 1985-08-09 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001258A1 (fr) * 1997-07-03 1999-01-14 Chick Workholding Solutions, Inc. Mors amovible pour etau et procede de fixation d'un mors a un etau
US5921534A (en) * 1997-07-03 1999-07-13 Chick Workholding Solutions, Inc. Detachable jaw for vise-like workholding apparatus

Also Published As

Publication number Publication date
ES2002333A6 (es) 1988-08-01
DE3682354D1 (de) 1991-12-12
DE3532490A1 (de) 1987-03-19
ATE69190T1 (de) 1991-11-15
EP0215326B1 (fr) 1991-11-06
EP0215326A3 (en) 1988-10-05
US4664365A (en) 1987-05-12

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