EP0235571A2 - Dispositif de serrage - Google Patents

Dispositif de serrage Download PDF

Info

Publication number
EP0235571A2
EP0235571A2 EP87101147A EP87101147A EP0235571A2 EP 0235571 A2 EP0235571 A2 EP 0235571A2 EP 87101147 A EP87101147 A EP 87101147A EP 87101147 A EP87101147 A EP 87101147A EP 0235571 A2 EP0235571 A2 EP 0235571A2
Authority
EP
European Patent Office
Prior art keywords
clamping
gap
arm
fork parts
fork
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
EP87101147A
Other languages
German (de)
English (en)
Other versions
EP0235571B1 (fr
EP0235571A3 (en
Inventor
Michel Buchenau
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.)
DESTACO Europe GmbH
Original Assignee
DE STA CO Metallerzeugnisse 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 DE STA CO Metallerzeugnisse GmbH filed Critical DE STA CO Metallerzeugnisse GmbH
Priority to AT87101147T priority Critical patent/ATE74813T1/de
Publication of EP0235571A2 publication Critical patent/EP0235571A2/fr
Publication of EP0235571A3 publication Critical patent/EP0235571A3/de
Application granted granted Critical
Publication of EP0235571B1 publication Critical patent/EP0235571B1/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
    • B25B5/00—Clamps
    • B25B5/16—Details, e.g. jaws, jaw attachments
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive

Definitions

  • the invention relates to a clamping device which consists of a fork-like clamping head, between the fork parts of which the pivotable clamping arm and these pivoting articulation and actuating members are mounted.
  • Clamping devices of this type are generally known and in use and are used in particular for clamping workpieces to be machined on work tables or specially designed workpiece frames in the context of, in particular, series production.
  • these clamping devices fulfill the requirements to be placed on them for a perfect and permanent fixation of the workpiece on their base. This flawless function can, however, be adversely affected if machining operations are to be carried out on the workpiece in question, and the case may well arise that machining chips get into the actuating mechanism of such toggle lever clamping devices. If fine chips get between the articulated members, this can lead to jamming of the articulated members or even damage to the device in question, so that it must be replaced.
  • the invention is therefore based on the object of designing a tensioning device of the type mentioned using the known covering principle in such a way that, despite the confined space in the area of the tensioning head of the device and the pivoting movement of the tensioning lever by approximately 120 °, this covering principle also applies to such Clamping devices can be used to prevent the entry of chips or the like. Foreign bodies in the gap between the fork parts and thus between the joint members.
  • the proposal according to the invention consists in covering the gap by means of an elastic cover element at least on the distant side, here an elastic cover element is to be understood as one that cannot be damaged by chips or the like.
  • an elastic cover element is to be understood as one that cannot be damaged by chips or the like.
  • the roller spring band sits as a small roller blind inside the clamping head and takes part in the movement of the clamping arm, which pulls the roller blind out and around the corner when it is swiveled into the clamping position and covers the articulated members and joints located below or behind it.
  • a covering element extending to the clamping position of the clamping arm can also advantageously be arranged on the clamping side at the gap between the fork parts, for example in the form of a resilient tongue which extends in the gap or can also bear against the outside of the clamping head. This outside arrangement of the cover element would also be possible for the roll spring band, but then the roller blind storage cannot be accommodated within the gap.
  • the width of the cover element is greater than the width of the gap and provided with a Spanmrm penetration opening and on or on both sides of the clamping head, covering the gap is rolled out.
  • the clamping head is expedient at its free ends, i.e. Round the fork parts so that the cover element can be easily moved over the free ends. Since the tensioning element reaches through the covering element, the covering element also takes part in the movement of the tensioning arm, the withdrawal of the covering element being connected on one side to rolling and on the other side to rolling up.
  • the toggle lever clamping device consists of a fork-like clamping head 6, between the fork parts 3 of which the clamping arm 1 and the pivoting articulation and actuating members are mounted, which require no further explanation, since these elements are in their arrangement and
  • the tensioning device is driven by means of a hydraulically or pneumatically actuable drive cylinder 11.
  • the gap 2 receiving the joint and actuating members and the supported end of the tension arm 1 is between the joint parts 3 covered with an elastic cover element 4 on the distant side 5, the cover element 4 being provided with a length which corresponds to the maximum length of the gap 2 when the tensioning lever 1 is in the tensioned position.
  • the cover element 4 is in the form of a roll spring band 4 ', which can be rolled up at the clamping head 6 ! J is stored below the reset position of the tension arm 1 and is attached with its free end 7 to the end of the tension arm 1 near the joint.
  • the roll spring band In the reset position I according to FIG. 1, the roll spring band is rolled up on its corresponding spring-loaded take-up roll 12 and extended accordingly in the tensioning position II, and runs in the gap 2, as indicated by dashed lines.
  • a covering element extending to the tensioning position of the tensioning arm 1 is suitably fastened to the gap 2 between the fork parts 3 and also covers the gap 2 from this side. Otherwise, the roller blind principle can also be used on this side for this cover element 8, which can be kept much shorter on this side, since the travel distance is correspondingly short here.
  • the device can also be designed such that the width of the cover element 4 is greater than the width of the gap 2 and is provided with a clamping arm passage opening 9.
  • the cover element 4 thus forms a continuous band, the ends of which are supported on both sides on the small roller blind shafts, the spring tension of which is directed in opposite directions. Since the tension arm 1 extends through the roll spring band 4, this spring band automatically makes the movement of the tension arm 1, with the pull-out on one side being connected to rolling in on the other side and vice versa.
  • the arrangement of the passage opening requires that the roller spring band be kept wider than the gap, which means that the roller spring band is not in this embodiment can extend within the gap 2, but extends over the flanks at the free ends 3 'of the fork parts 3, which are appropriately provided on both sides with roundings lo.
  • the small roller blinds in the clamping head in a manner that is not bulky, for which purpose the fork parts are provided with corresponding recesses 13 in which the small roller blind shafts (not shown) are mounted are.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP87101147A 1986-01-30 1987-01-28 Dispositif de serrage Expired - Lifetime EP0235571B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101147T ATE74813T1 (de) 1986-01-30 1987-01-28 Spannvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3602738A DE3602738C1 (de) 1986-01-30 1986-01-30 Spannvorrichtung
DE3602738 1986-01-30

Publications (3)

Publication Number Publication Date
EP0235571A2 true EP0235571A2 (fr) 1987-09-09
EP0235571A3 EP0235571A3 (en) 1989-04-26
EP0235571B1 EP0235571B1 (fr) 1992-04-15

Family

ID=6292937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101147A Expired - Lifetime EP0235571B1 (fr) 1986-01-30 1987-01-28 Dispositif de serrage

Country Status (4)

Country Link
EP (1) EP0235571B1 (fr)
AT (1) ATE74813T1 (fr)
DE (1) DE3602738C1 (fr)
ES (1) ES2031459T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0356936A2 (fr) * 1988-08-29 1990-03-07 Delaware Capital Formation Inc. Moyen de serrage motorisé avec racleur de voie
EP0437862A2 (fr) * 1990-01-16 1991-07-24 Delaware Capital Formation Inc. Moyen de serrage motorisé avec voie recouverte
EP0503193A2 (fr) * 1991-03-11 1992-09-16 Btm Corporation Crampon mécanique scellé
FR2730180A1 (fr) * 1995-02-02 1996-08-09 Robotic Sa Perfectionnement pour dispositif de serrage du type comprenant un levier actionne par un piston

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4025530A1 (de) * 1990-01-09 1991-07-11 Sta Co Mettallerzeugnisse Gmbh Spannvorrichtung
DE9412722U1 (de) * 1994-08-06 1994-09-29 DE-STA-CO Metallerzeugnisse GmbH, 61449 Steinbach Kniehebelspannvorrichtung
DE10238815B3 (de) * 2002-08-23 2004-02-26 De-Sta-Co Metallerzeugnisse Gmbh Zentrierspanner
DE20302384U1 (de) * 2003-02-14 2004-06-24 Wilhelm Karmann Gmbh Spannvorrichtung
JP6751914B2 (ja) * 2017-11-14 2020-09-09 Smc株式会社 クランプ装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1679912A (en) * 1925-08-03 1928-08-07 Cold Spring Granite Company Automatic slide cover
US2190213A (en) * 1937-12-15 1940-02-13 Henry F Meyer Way guard for machine tools
US2367156A (en) * 1943-03-12 1945-01-09 Loren E Thompson Abrading machine work support
US2551860A (en) * 1949-12-09 1951-05-08 Colonial Broach Co Means mounting curtain for covering ways of machine beds
DE1122346B (de) * 1958-11-18 1962-01-18 Mikromat Dresden Betrieb Abdeckung zum Schutz von Fuehrungsbahnen von Werkzeugmaschinen od. dgl.
DE7806055U1 (de) * 1978-03-01 1978-06-15 De-Sta-Co Metallerzeugnisse Gmbh, 6000 Frankfurt Kniehebelgelenkspanner
FR2427179A1 (fr) * 1978-05-29 1979-12-28 Cecchi Gerard Perfectionnements aux dispositifs de serrage a commande pneumatique
DE3151618A1 (de) * 1981-12-17 1983-07-07 Maag-Zahnräder & -Maschinen AG, 8023 Zürich Bandabdeckung einer fuehrungsbahn fuer einen schlitten an einer werkzeugmaschine
US4458889A (en) * 1982-09-29 1984-07-10 Dover Corporation (De-Sta-Co. Div.) Locking power clamp
FR2550115A1 (fr) * 1983-08-03 1985-02-08 Thombor Rojac Dispositif de serrage

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1679912A (en) * 1925-08-03 1928-08-07 Cold Spring Granite Company Automatic slide cover
US2190213A (en) * 1937-12-15 1940-02-13 Henry F Meyer Way guard for machine tools
US2367156A (en) * 1943-03-12 1945-01-09 Loren E Thompson Abrading machine work support
US2551860A (en) * 1949-12-09 1951-05-08 Colonial Broach Co Means mounting curtain for covering ways of machine beds
DE1122346B (de) * 1958-11-18 1962-01-18 Mikromat Dresden Betrieb Abdeckung zum Schutz von Fuehrungsbahnen von Werkzeugmaschinen od. dgl.
DE7806055U1 (de) * 1978-03-01 1978-06-15 De-Sta-Co Metallerzeugnisse Gmbh, 6000 Frankfurt Kniehebelgelenkspanner
FR2427179A1 (fr) * 1978-05-29 1979-12-28 Cecchi Gerard Perfectionnements aux dispositifs de serrage a commande pneumatique
DE3151618A1 (de) * 1981-12-17 1983-07-07 Maag-Zahnräder & -Maschinen AG, 8023 Zürich Bandabdeckung einer fuehrungsbahn fuer einen schlitten an einer werkzeugmaschine
US4458889A (en) * 1982-09-29 1984-07-10 Dover Corporation (De-Sta-Co. Div.) Locking power clamp
FR2550115A1 (fr) * 1983-08-03 1985-02-08 Thombor Rojac Dispositif de serrage

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0356936A2 (fr) * 1988-08-29 1990-03-07 Delaware Capital Formation Inc. Moyen de serrage motorisé avec racleur de voie
EP0356936A3 (fr) * 1988-08-29 1991-05-02 Delaware Capital Formation Inc. Moyen de serrage motorisé avec racleur de voie
EP0437862A2 (fr) * 1990-01-16 1991-07-24 Delaware Capital Formation Inc. Moyen de serrage motorisé avec voie recouverte
EP0437862A3 (en) * 1990-01-16 1992-03-25 Delaware Capital Formation Inc. Power clamp with enclosed track
EP0503193A2 (fr) * 1991-03-11 1992-09-16 Btm Corporation Crampon mécanique scellé
EP0503193A3 (en) * 1991-03-11 1993-01-13 Btm Corporation Sealed power clamp
FR2730180A1 (fr) * 1995-02-02 1996-08-09 Robotic Sa Perfectionnement pour dispositif de serrage du type comprenant un levier actionne par un piston

Also Published As

Publication number Publication date
ES2031459T3 (es) 1992-12-16
EP0235571B1 (fr) 1992-04-15
ATE74813T1 (de) 1992-05-15
DE3602738C1 (de) 1987-07-09
EP0235571A3 (en) 1989-04-26

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