EP0379884B1 - Schwenkspannvorrichtung - Google Patents

Schwenkspannvorrichtung Download PDF

Info

Publication number
EP0379884B1
EP0379884B1 EP90100349A EP90100349A EP0379884B1 EP 0379884 B1 EP0379884 B1 EP 0379884B1 EP 90100349 A EP90100349 A EP 90100349A EP 90100349 A EP90100349 A EP 90100349A EP 0379884 B1 EP0379884 B1 EP 0379884B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
piston rod
guiding
piston
sleeve
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
EP90100349A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0379884A2 (de
EP0379884A3 (en
Inventor
Detlef Ulle
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
Publication of EP0379884A2 publication Critical patent/EP0379884A2/de
Publication of EP0379884A3 publication Critical patent/EP0379884A3/de
Application granted granted Critical
Publication of EP0379884B1 publication Critical patent/EP0379884B1/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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/062—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis parallel to the pressing direction

Definitions

  • the invention relates to a swivel clamping device, in particular for clamping workpieces on a base according to the preamble of the main claim.
  • Such a swivel clamping device for use.
  • the cylinder is closed at its end remote from the tension arm with a flange connection plate, and the swivel guide sleeve for the piston rod, which is relatively small in diameter with respect to the cylinder inner diameter, is only fixed in and on a relatively short bore in the upper cylinder base, which forms a unit with the cylinder.
  • the swivel guide groove must face the piston stay open to be able to pull the piston rod out of the guide sleeve at all, if it should remain in the cylinder.
  • a guide groove which is open at its end is, however, to a certain extent more or less unstable, since if one does not want to oversize it with regard to its wall thickness, it can spread out more or less conically.
  • the invention is therefore based on the object of improving such a swivel clamping device in such a way that when the swivel guide sleeve is fastened in a stable position the swivel guide sleeve, the piston rod with piston and possibly also the clamping arm can be inserted into and removed from the cylinder in the cylinder and as stable as possible guidance of the coupling member between the sleeve and the piston rod, and can also be removed again from the side of the cylinder remote from the fastening, and this only with an opening operation on the clamping arm side of the cylinder.
  • This design of the guide slot is possible in particular because the component parts which are movable relative to one another can be inserted as a unit into the cylinder and, of course, pulled out again, for which purpose only a single manipulation of the opening on the piston rod side of the cylinder is required. Since the installation unit can be assembled completely independently of the cylinder, the insertion of the coupling member between the piston rod and the guide sleeve is not a problem, despite the closed guide slot at both ends, because for the installation and removal of these components parts with respect to the cylinder no longer have to be taken into account on the otherwise required decoupling of the piston rod and guide sleeve.
  • the actual piston guide space in the cylinder remains completely free of internals, and the piston rod does not have to be tubular or sleeve-shaped, since these no longer have one from the bottom overlap protruding guide pin, but sits itself concentrically in the guide sleeve concentrically arranged in the upper part of the cylinder interior, ie a constructive over-determination that is present with a pin guide engaging in the piston rod and the resulting difficulties are avoided. Since the piston rod extends through the guide sleeve seated in the cylinder from below, the entire length of the guide sleeve remains effective for guiding the piston rod in any position of the piston rod.
  • the diameter of the interior receiving the guide sleeve is larger than the diameter of the piston guide space. If the cross-section of the piston rod is to be dimensioned accordingly strong, the guide sleeve can be dimensioned correspondingly strongly with regard to its wall thickness, and moreover the piston with its ring seals can be inserted more easily without endangering these seals, which would otherwise fit tightly at the opening edge of the pressure medium supply and possibly before seen rotation overload protection would have to be pushed past.
  • the guide sleeve arranged in the upper half of the cylinder interior is expediently dimensioned with regard to its guide function with a length which corresponds at least to the length of the piston stroke, plus the diameter of the driver pin.
  • the piston, piston rod and guide sleeve should be able to be assembled into a unit before installation in the cylinder, this also advantageously results in a conceivably simple design of the cylinder, namely in such a way that it is simply pot-shaped, i.e. all that is required is a lock on the piston rod side in the form of a ring encompassing the piston rod in a sealed manner, which ring can also be preassembled on the piston rod if the insertable unit comprising the piston, piston rod and guide sleeve should also be provided with the tension arm.
  • the above-mentioned diameter gradation of the cylinder interior is advantageously used to form a shoulder about half the length of the cylinder interior on which the guide sleeve rests, so that it can be arranged axially fixed between the ring or flange forming the piston rod-side closure and the shoulder.
  • the sleeve itself is for this with at least one Providing pressure medium passage ring collar, which sits on the shoulder and which also takes over the leadership of the sleeve end on the cylinder inner wall.
  • the guide sleeve is provided with guide connections resting on the wall of the cylinder interior, which results in an annular space between the cylinder wall and the guide sleeve for the distribution and supply of the pressure medium.
  • One of these bundles of rings is advantageously used to arrange an elastic anti-rotation lock in the area of the cylinder interior between the sleeve and the wall of the interior.
  • Such locks are known per se.
  • such a lock is used so that the guide sleeve of the cylinder can disengage from the lock and twist when the clamping arm hits an obstacle.
  • the arrangement of such a lock is only possible if the piston rod-side closure is not designed as an integral part (flange) of the sleeve.
  • the device according to the invention is moreover also suitable with regard to the effect of its return swivel stroke from the clamping position for effecting it with a return spring, since a compression spring can be used in a known manner in the piston displacement space between piston and cylinder base, which is completely free of internals, which takes effect immediately when the pressure on the other side of the piston drops.
  • the swiveling clamping device consists of a cylinder 2 provided with pressure medium connections 18 with a piston 5 that can be reset and reset, and a piston rod 1, on the free end of which the clamping arm 17 is fastened in a suitable manner and in a manner preventing rotation.
  • the ring 11 of the embodiment according to FIG. 2 is replaced by an integrally arranged on the guide sleeve 3 flange 11 ', which sits on a corresponding flange 11 Flansch of the cylinder 2 and is firmly but releasably connected to it .
  • the pressure medium connection 18 for the lowering or clamping stroke is located while below the collar 14 ', which must be ensured with suitable means that the pressure surface of the piston 5 is accessible to the pressure medium.
  • the swivel clamping device consists of a piston rod swivel guide with swivel guide slot 7, between which and the piston / piston rod unit the swivel transmission element is arranged.
  • the piston rod swivel guide is in the form of a piston rod 1 comprising this, with its entire length L, arranged in the tension arm-side interior 2 'of the cylinder 2, axially fixed and rotatably held in the cylinder 2 guide sleeve 3, which is clearer and in a special embodiment in Fig 3 is shown.
  • This guide sleeve 3 is seated in the embodiment of FIG. 2 while keeping a piston rod-side loading surface 4 of the piston 5 in the interior 2 ', so that the pressure medium supplied through the upper connection 18 for the lowering or clamping stroke, as indicated by arrow 19 in Fig. 2 indicated, can reach the contact surface 4 and can press the piston 5 with the piston rod 1 downwards.
  • 2 in the embodiment of FIG. 2 is simply achieved in that the outside of the guide sleeve 3 is provided in this area with a plurality of axially extending grooves 20 which also pass through the annular collar 14, which is used for the concentric holder the guide sleeve at the lower end in the cylinder.
  • a wall opening is provided which forms the swivel guide slot 7 into which the free end 8 of the driving pin 9 fixed in the piston rod 1 engages as a coupling member.
  • the relatively small, annular residual surface of the loading surface 4, which results from the application of the loading surface to the lower edge 3 'of the guide sleeve 3, is not disadvantageous since the entire loading surface 4 is available immediately after the piston loading surface 4 has been lifted off the edge 3' stands. Apart from that, you could also do without further form the lower edge 3 'of the guide sleeve 3 in the manner of a loopholes in order to enlarge the actual area of application at the beginning of the application of pressure.
  • the diameter D of the interior 2 ' is larger than the diameter D 1 of the piston guide space 6.
  • an elastic rotation lock 10 is then arranged, which, as shown, for example, consists of a spring loaded ball.
  • the spring must of course be designed so that it withstands the normal pressure that arises on the flanks of the guide slot 7 through the protruding end 8 of the driving pin 9.
  • Such a lock responds immediately when the tension arm 17 encounters a lateral obstacle, which could lead to a breakage of the driver pin if the guide sleeve 3 is arranged in a rotationally fixed manner in the cylinder.
  • the guide sleeve 3 is with the wall of the cylinder interior 2 'adjacent guide collars 15 provided.
  • the guide sleeve engages with its other end in the reduced-diameter cylinder interior and forms the upper stop for the piston 5 with its lower edge 3 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Actuator (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
EP90100349A 1989-01-21 1990-01-09 Schwenkspannvorrichtung Expired - Lifetime EP0379884B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3901740 1989-01-21
DE3901740 1989-01-21
DE3913375A DE3913375C1 (enExample) 1989-01-21 1989-04-24
DE3913375 1989-04-24

Publications (3)

Publication Number Publication Date
EP0379884A2 EP0379884A2 (de) 1990-08-01
EP0379884A3 EP0379884A3 (en) 1990-12-12
EP0379884B1 true EP0379884B1 (de) 1993-03-31

Family

ID=25876999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100349A Expired - Lifetime EP0379884B1 (de) 1989-01-21 1990-01-09 Schwenkspannvorrichtung

Country Status (3)

Country Link
EP (1) EP0379884B1 (enExample)
DE (2) DE3913375C1 (enExample)
ES (1) ES2040508T3 (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4111834A1 (de) * 1991-04-11 1992-10-15 Berg & Co Gmbh Ver- und entriegelungsvorrichtung fuer einen pressenstoessel
JP3585656B2 (ja) * 1996-07-19 2004-11-04 株式会社コスメック 旋回式クランプ装置
DE202012004649U1 (de) 2012-05-11 2012-06-13 Rupert Muster Dreh- und/oder Linearaktor
CN112720087B (zh) * 2021-01-16 2025-01-28 江门市江海区轴研科技有限公司 一种用于磨刀设备的上落料机械夹持装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1946320C3 (de) * 1968-09-23 1974-10-10 Applied Power Industries, Inc., Milwaukee, Wis. (V.St.A.) Hydraulisch betätigbare Schwingklammer-Spannvorrichtung
DE2354452A1 (de) * 1973-10-31 1975-07-31 Werner Kunert Druckzylinder mit hub- und drehbewegungen
US4508372A (en) * 1981-06-05 1985-04-02 White Frank L Grease gun extension assembly
DE3201013C2 (de) * 1982-01-15 1984-11-29 Maschinenfabrik Hilma Gmbh, 5912 Hilchenbach Hydraulisch betätigbarer Schwenkspanner
DE3408188C1 (de) * 1984-03-06 1985-04-25 Germa Armaturen GmbH & Co KG Spezialarmaturen, 7253 Renningen Strömungsmittelbetätigter Schwenkspanner

Also Published As

Publication number Publication date
DE59001084D1 (de) 1993-05-06
EP0379884A2 (de) 1990-08-01
ES2040508T3 (es) 1993-10-16
DE3913375C1 (enExample) 1989-12-28
EP0379884A3 (en) 1990-12-12

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