EP0445051A1 - Hydraulische Spannvorrichtung - Google Patents

Hydraulische Spannvorrichtung Download PDF

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Publication number
EP0445051A1
EP0445051A1 EP91420067A EP91420067A EP0445051A1 EP 0445051 A1 EP0445051 A1 EP 0445051A1 EP 91420067 A EP91420067 A EP 91420067A EP 91420067 A EP91420067 A EP 91420067A EP 0445051 A1 EP0445051 A1 EP 0445051A1
Authority
EP
European Patent Office
Prior art keywords
finger
jaw
casing
groove
elastically deformable
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
EP91420067A
Other languages
English (en)
French (fr)
Other versions
EP0445051B1 (de
Inventor
Arthur Schwab
Thomas Schick
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.)
Staeubli GmbH
Original Assignee
Staeubli und Trumpelt GmbH Maschinenfabrik
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 Staeubli und Trumpelt GmbH Maschinenfabrik filed Critical Staeubli und Trumpelt GmbH Maschinenfabrik
Priority to AT91420067T priority Critical patent/ATE94109T1/de
Publication of EP0445051A1 publication Critical patent/EP0445051A1/de
Application granted granted Critical
Publication of EP0445051B1 publication Critical patent/EP0445051B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • 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
    • 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
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction
    • 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
    • B25B5/08—Arrangements for positively actuating jaws using cams
    • B25B5/087—Arrangements for positively actuating jaws using cams actuated by a hydraulic or pneumatic piston

Definitions

  • the present invention relates to hydraulically actuated devices for clamping removable parts on a fixed support, and it relates more particularly to devices of this type used for the interchangeable fixing of the two opening elements of the molds against the fixed and movable plates. conventional molding presses.
  • hydraulic clamping devices generally use a control finger which is linked to the piston of a hydraulic actuating cylinder and which is associated with a jaw able to move transversely relative to the axis of the aforementioned finger. , which finger and jaw come into contact with each other by means of oblique faces so that the axial displacement of the finger causes the application of the jaw against the workpiece to be clamped.
  • the movable elements namely the control finger and the clamping jaw, comprise practically no protection from the environment, so that the risks of seizures more or less pronounced under the effect of dust, shavings or the like are not negligible, giving rise to relatively frequent dismantling and reassembly operations.
  • the present invention mainly aims to remedy, which relates to the hydraulic clamping device defined in claim 1.
  • the elastically deformable means for the axial connection of the control finger and the casing can take different forms, for example that of a compression spring mounted on the rod which joins the piston of the hydraulic actuation system to the control finger, said spring being interposed between the annular faces facing said piston and the jaw housing.
  • a split ring capable of contracting radially against its elastic resistance to deformation.
  • This split ring is normally housed partly in a groove made in the inner wall of the bore of the jaw housing and partly in a similar groove made in the outer wall of the control finger, thereby ensuring the axial connection of this last with the housing. It is nevertheless understood that when this casing reaches the end of the stroke, the ring contracts to penetrate completely into the groove of the finger which is thus free to continue its stroke to operate the clamping; during the return movement of the finger, the split ring resumes its initial profile elastically.
  • the device shown in fig. 1 and 2 essentially comprises a body 1 which is pierced longitudinally with a bore comprising three parts established at different diameters and referenced 10, 11 and 12.
  • the part 12 with a smaller diameter opens on one of the transverse faces of the body 1 while the opposite part 10 with a larger diameter is closed by a flange 13.
  • a piston 2 axially integral with a rod 20 which extends opposite of said piston in the form of a cylindrical control finger 21, which is hollowed out by an annular groove referenced 22 in FIG. 2.
  • This finger 21 is in fact enclosed inside a cylindrical casing 3 the periphery of which has two diameters which correspond, with very little play, to the diameters of the parts 11 and 12 of the longitudinal bore of the body 1. From side of the piston 2, this casing 3 is closed annularly by a flange 30 which slides freely on the rod 20, while on the opposite there is provided a transverse bottom 31 immediately behind which is formed an opening 32 facing downwards .
  • a clamping jaw 4 is slidably mounted, the upper face 40 of which is provided oblique to cooperate with the corresponding bearing face 23, itself oblique, made longitudinally at the end of the finger 21
  • This jaw 4 is associated with elastic means which tend to point it upwards with its face 40 in contact with the mating face 23.
  • connection between the finger 21 and the casing 3 is effected by means of a split ring 5 (see fig. 2) which is normally housed partly in the aforementioned groove 22 of the finger 21 and partly in a groove 33 made in the inner wall of the housing 3.
  • the body 1 was assumed to be fixed to a fixed support A, constituted for example by one of the two plates of an injection press, in order to ensure the clamping of an ear B of one of the elements of mold.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Lubricants (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Jigs For Machine Tools (AREA)
  • Earth Drilling (AREA)
  • Gripping On Spindles (AREA)
  • Forklifts And Lifting Vehicles (AREA)
EP91420067A 1990-02-28 1991-02-27 Hydraulische Spannvorrichtung Expired - Lifetime EP0445051B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91420067T ATE94109T1 (de) 1990-02-28 1991-02-27 Hydraulische spannvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002761 1990-02-28
FR9002761A FR2656819B1 (fr) 1990-02-28 1990-02-28 Dispositif de bridage hydraulique.

Publications (2)

Publication Number Publication Date
EP0445051A1 true EP0445051A1 (de) 1991-09-04
EP0445051B1 EP0445051B1 (de) 1993-09-08

Family

ID=9394389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420067A Expired - Lifetime EP0445051B1 (de) 1990-02-28 1991-02-27 Hydraulische Spannvorrichtung

Country Status (5)

Country Link
EP (1) EP0445051B1 (de)
AT (1) ATE94109T1 (de)
DE (1) DE69100338T2 (de)
ES (1) ES2046029T3 (de)
FR (1) FR2656819B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101585172B (zh) * 2009-04-20 2011-05-25 无锡烨隆精密机械有限公司 机箱加工用多牙棒夹具
CN111571273A (zh) * 2020-06-02 2020-08-25 朱洁怡 一种利用连杆运动原理的活塞圆周面加工固定装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552707A1 (de) * 1966-03-02 1970-07-02 Volk Geb Knaebler Spannelement,bei welchem die Spannkraft durch ein Druckmittel erzeugt wird
GB1320237A (en) * 1970-12-01 1973-06-13 Franklin Ltd Spencer Work-holding devices
DE3318434A1 (de) * 1983-05-20 1984-11-22 AIOI Seiki K.K., Itami, Hyogo Spannvorrichtung
DE3431652A1 (de) * 1984-08-29 1986-03-13 Hans 4320 Hattingen Schoen Hydraulischer werkzeugspanner
DD248317A1 (de) * 1984-12-08 1987-08-05 Umform & Plastverarb Fz Einrichtung zum spannen von werkzeugen oder werkzeugtraegern an umformpressen
DE3733676A1 (de) * 1987-10-05 1989-04-20 Roemheld A Gmbh & Co Kg Hydraulisches spannelement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1552707A1 (de) * 1966-03-02 1970-07-02 Volk Geb Knaebler Spannelement,bei welchem die Spannkraft durch ein Druckmittel erzeugt wird
GB1320237A (en) * 1970-12-01 1973-06-13 Franklin Ltd Spencer Work-holding devices
DE3318434A1 (de) * 1983-05-20 1984-11-22 AIOI Seiki K.K., Itami, Hyogo Spannvorrichtung
DE3431652A1 (de) * 1984-08-29 1986-03-13 Hans 4320 Hattingen Schoen Hydraulischer werkzeugspanner
DD248317A1 (de) * 1984-12-08 1987-08-05 Umform & Plastverarb Fz Einrichtung zum spannen von werkzeugen oder werkzeugtraegern an umformpressen
DE3733676A1 (de) * 1987-10-05 1989-04-20 Roemheld A Gmbh & Co Kg Hydraulisches spannelement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101585172B (zh) * 2009-04-20 2011-05-25 无锡烨隆精密机械有限公司 机箱加工用多牙棒夹具
CN111571273A (zh) * 2020-06-02 2020-08-25 朱洁怡 一种利用连杆运动原理的活塞圆周面加工固定装置

Also Published As

Publication number Publication date
DE69100338D1 (de) 1993-10-14
FR2656819A1 (fr) 1991-07-12
DE69100338T2 (de) 1994-03-10
EP0445051B1 (de) 1993-09-08
ES2046029T3 (es) 1994-01-16
FR2656819B1 (fr) 1992-10-23
ATE94109T1 (de) 1993-09-15

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