EP0252253B1 - Commande de déplacement pour griffes de serrage de presses - Google Patents

Commande de déplacement pour griffes de serrage de presses Download PDF

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Publication number
EP0252253B1
EP0252253B1 EP87107114A EP87107114A EP0252253B1 EP 0252253 B1 EP0252253 B1 EP 0252253B1 EP 87107114 A EP87107114 A EP 87107114A EP 87107114 A EP87107114 A EP 87107114A EP 0252253 B1 EP0252253 B1 EP 0252253B1
Authority
EP
European Patent Office
Prior art keywords
slot
drive
toothed belt
push
wheel
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
EP87107114A
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German (de)
English (en)
Other versions
EP0252253A1 (fr
Inventor
Wilfried Wendland
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.)
MASCHINENFABRIK HILMA GmbH
Original Assignee
MASCHINENFABRIK HILMA 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 MASCHINENFABRIK HILMA GmbH filed Critical MASCHINENFABRIK HILMA GmbH
Publication of EP0252253A1 publication Critical patent/EP0252253A1/fr
Application granted granted Critical
Publication of EP0252253B1 publication Critical patent/EP0252253B1/fr
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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00—Presses
    • Y10S100/918—Bolster and die

Definitions

  • the invention relates to an adjustment drive for slide-in clamps for fastening upper tools under the clamping surface of a press ram with generic features according to the preamble of patent claim 1.
  • US-A 3 335 657 shows such an adjustment drive, in which a spindle is mounted in the T-slot, which passes through a rotatable but axially immovable threaded nut in a clamping block that is mechanically effective by means of wedge surfaces and is connected to a motor drive.
  • slide-in clamps with hydraulically loaded clamping pistons are more common, these hydraulic slide-in clamps not only accelerating the clamping process and clamping the tool more securely, but above all more precisely, but also keeping the spindle free of the clamping forces so that it can be carried out more easily and is not subject to wear, which is due to the load with the high clamping forces.
  • the object of the invention is to provide a device for the mechanized lateral displacement of each insert clamp in its T-slot in the press ram, which works differently than the previously known, but is simple in construction and can be actuated precisely.
  • a toothed belt with a flat cross section is primarily provided as the tension element. If necessary, flat chains, ropes or the like can also be used.
  • An essential feature of the invention can be seen in the accommodation of the flat tension element between the side surfaces of the sliding block and the T-slot guide. Without impairment and without additional work compared to previous T-slot guides, space can be created for the accommodation of the tension element, without the force-transmitting surfaces on clamping the tool on the top and on the stepped underside of the sliding block having to be designed differently than before.
  • Toothed belts made of a high-strength plastic are particularly suitable, possibly with embedded steel cores, so that the toothed belt is stretch-free in the longitudinal direction, but is otherwise flexible on all sides.
  • Such a toothed belt is inexpensive to manufacture and, if necessary, can be purchased as a commercially available product.
  • an adjustment drive with the training features according to the invention has the advantage of a significantly more cost-effective production, a lower weight and in particular also the more precise positioning of the insert clamp at the desired clamping point.
  • the constructive implementation of the solution according to the invention for the task is carried out either by an endless guide of the toothed belt, the toothed belt at one end of the T-slot guide via the drive pinion of a drive unit fastened there and with the other end via a drive unit there in the T- Groove guide arranged deflection is guided, which thus forms the abutment for the transmission of tensile forces in the toothed belt, or by a finite toothed belt piece, which is attached at its ends to the end of the T-groove guide, so as to form the abutment for the To form tensile forces on the press ram, and which is guided by a drive unit via a drive pinion fixedly connected to the sliding block.
  • the drive unit can - as before - be attached on one side to the head end of the T-slot guide, so that the toothed belt extends as an endless loop through the T-slot guide and with its two strands is guided past the sliding block on both sides.
  • the drive unit moves synchronously with the sliding block and the slide-in tensioner during the adjustment movement.
  • the press ram 1 or a comparable component of the press has on the underside a T-slot guide 3 which is open to the clamping surface 1a and into which the insert clamp 4 engages with a sliding block 5 and can be moved horizontally back and forth is led.
  • the insert clamp 4 is designed in the case of the example as a commercially available, preferably hydraulically loaded clamping element and can be moved by horizontal adjustment of the sliding block 5 in the T-groove 2 into the area of the clamping edge 6 of an upper tool 7 or the like, in order to actuate the Clamping element to clamp the clamping edge of the tool.
  • the adjustment drive for the sliding block 5 of the slide-in unit comprises a toothed belt 9, which is made within the external tensioner 4 and consists of a drive unit 8 and a drive unit 8 fastened to the press ram 1 via deflections 10, a drive pinion 11 and a tensioning device 12.
  • the toothed belt 9 is guided as a closed horizontal path loop in the T-slot 2 and extends with its two strands between the side surfaces of the sliding block 5 and the opposite side surfaces of the T-slot 2 to one which is supported at the opposite end of the T-slot 2 Deflection 13.
  • the slide-in tensioner 4 or a tensioning element By switching on the drive motor 14, the slide-in tensioner 4 or a tensioning element, which may be designed in a different manner, can be moved from the position shown in full lines to the tensioning position shown in dashed lines and back.
  • An electric motor is just as suitable as the drive motor, as is a drive unit that can be pressurized with a pressure medium.
  • a finite toothed belt piece is attached at one end to the outer end of the T-slot 2 and with the other end to the inner end of the T-slot 2.
  • the toothed belt 9 runs through deflections 10 and via the drive pinion 11 through the drive unit 8, which in this exemplary embodiment is connected to the sliding block 5, so that the drive unit 8 with the drive motor 14 moves together with the tensioning device 4.
  • the application of the features of the invention is also suitable for clamping devices for fastening tools or workpieces on clamping tables or the like, provided that these have the generic training features.
  • the use of the features of the invention is independent of the specific design of the clamping means for holding the tool and also independent of the manner in which these clamping means are operated.

Claims (4)

1. Commande de déplacement pour griffe de serrage pour la fixation d'outils supérieurs (7) sous la surface de bridage (la) d'un coulisseau de presse (1) comportant un guidage à rainure en T (2) dans lequel la griffe de serrage (4) est en prise avec un coulisseau (5) et dans lequel elle est déplaçable horizontalement par l'intermédiaire d'un moteur de commande (14) et en utilisant un élément de traction (9) exempt d'allongement et de jeu dans le sens de la traction et flexible autour de son axe longitudinal, caractérisée en ce que l'élément de traction (9) flexible est déposé sous forme de boucle horizontale fermée dans la rainure en T, les deux brins de la boucle passant respectivement d'un côté entre le coulisseau (5) et la paroi de la rainure, le coulisseau (5) étant fixé à un brin et l'élément de traction étant renvoyé sur un rouleau de renvoi (13) monté dans la zone intérieure de l'étendue longitudinale de la rainure en T, cependant qu'à l'extrémité ouverte de la rainure en T (2) il peut être tiré dans les deux sens par une roue d'entraînement (11) stationnaire se trouvant dans le plan de la boucle.
2. Commande de déplacement pour griffe de serrage selon le préambule de la revendication 1, caractérisée par une courroie dentée (9) de section plate placée contre la surface intérieure et supérieure dans la rainure en T (2) en tant qu'élément de traction, dont une extrémité est fixée dans la zone intérieure de l'étendue longitudinale de la rainure en T sur la surface en question, qui est guidée par des rouleaux de renvoi (10) et une roue de roulement (11) d'une unité de commande (8) reliée à la griffe de serrage (4), et qui est fixée à l'autre extrémité au bout de la rainure, l'unité de commande (8), y compris la griffe de serrage (4), pouvant, par l'intermédiaire d'une roue de roulement (11), faire un mouvement de va-et-vient dans les deux sens sur la courroie dentée (9).
3. Commande de déplacement selon la revendication 2, caractérisée en ce que la courroie dentée (9) est guidée par l'intermédiaire de renvois (10) avec un dispositif de serrage (12) dans un treuil fixe en passant sur un pignon d'entraînement (11).
4. Commande de déplacement selon les revendications 2 et 3, caractérisée en ce que la courroie dentée (9) est guidée sur un pignon d'entraînement (11) logé à l'extrémité du guidage à rainure en T sur le coulisseau de presse (1) et sur un renvoi (13) logé à l'extrémité opposée du guidage à rainure en T (2).
EP87107114A 1986-05-30 1987-05-16 Commande de déplacement pour griffes de serrage de presses Expired - Lifetime EP0252253B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3618286A DE3618286C1 (de) 1986-05-30 1986-05-30 Verstellantrieb fuer Einschubspanner von Pressen
DE3618286 1986-05-30

Publications (2)

Publication Number Publication Date
EP0252253A1 EP0252253A1 (fr) 1988-01-13
EP0252253B1 true EP0252253B1 (fr) 1990-07-18

Family

ID=6301997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87107114A Expired - Lifetime EP0252253B1 (fr) 1986-05-30 1987-05-16 Commande de déplacement pour griffes de serrage de presses

Country Status (4)

Country Link
US (1) US4790174A (fr)
EP (1) EP0252253B1 (fr)
DE (1) DE3618286C1 (fr)
ES (1) ES2016303B3 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3869665D1 (de) * 1987-06-10 1992-05-07 Siemens Ag Praezisionsstanzautomat und zugehoeriges verfahren zum werkzeugwechsel.
DE4026827C2 (de) * 1990-08-24 1998-11-05 Schloemann Siemag Ag Befestigungsvorrichtung zur lösbaren Verbindung von Werkzeug und Werkzeugträger einer Stauchpresse
US5603237A (en) * 1995-04-19 1997-02-18 The Minster Machine Company Inching drive system for a mechanical punch press
US5694805A (en) * 1996-07-16 1997-12-09 Applied Power Inc. Travelling clamp with removable rails
US5715725A (en) * 1996-07-16 1998-02-10 Applied Power Inc. Biaxial travelling clamp for securing a tool to a press
US20070138724A1 (en) * 2005-12-16 2007-06-21 Black & Decker Clamp Device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3335657A (en) * 1966-05-26 1967-08-15 Minster Machine Co Press with sliding bolster and die clamp
DE2343682C2 (de) * 1973-08-30 1975-04-30 L. Schuler Gmbh, 7320 Goeppingen Werkzeugwechseleinrichtung an einer Presse
GB1479281A (en) * 1974-06-12 1977-07-13 Floyd G Linear actuator mechanisms
DE2509310A1 (de) * 1975-03-04 1976-09-16 Vyzk Ustav Tvarecich Stroju Vorrichtung zum automatischen werkzeugwechsel fuer pressen
FR2382630A1 (fr) * 1977-03-01 1978-09-29 Peugeot Aciers Et Outillage Dispositif de commande de deplacement lineaire lent, notamment pour glace de portiere d'automobile
GB2089927A (en) * 1980-12-19 1982-06-30 Inventions Ltd Enterprise Device for converting rotary motion into reciprocating motion for driving vehicle headlamp wipers
JPS60172429A (ja) * 1984-02-17 1985-09-05 Aioi Seiki Kk 加工機械の工具等の片折れチエン式流体圧シリンダ駆動形押引操作装置
US4698894A (en) * 1984-07-02 1987-10-13 Hubbell-Bell Inc. Quick change die retention apparatus
DE3507912C1 (de) * 1985-03-06 1986-11-13 Maschinenfabrik Hilma Gmbh, 5912 Hilchenbach Vorrichtung zum Befestigen eines Oberwerkzeuges unter der Aufspannflaeche eines Pressenstoessels
CH668224A5 (de) * 1985-05-01 1988-12-15 Feintool Int Holding Presse mit einer oberen und einer unteren platte zum aufspannen eines werkzeugpaketes.

Also Published As

Publication number Publication date
US4790174A (en) 1988-12-13
ES2016303B3 (es) 1990-11-01
EP0252253A1 (fr) 1988-01-13
DE3618286C1 (de) 1987-07-09

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