EP0058828B1 - Outil à levier à transmission progressive - Google Patents

Outil à levier à transmission progressive Download PDF

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Publication number
EP0058828B1
EP0058828B1 EP82100471A EP82100471A EP0058828B1 EP 0058828 B1 EP0058828 B1 EP 0058828B1 EP 82100471 A EP82100471 A EP 82100471A EP 82100471 A EP82100471 A EP 82100471A EP 0058828 B1 EP0058828 B1 EP 0058828B1
Authority
EP
European Patent Office
Prior art keywords
lever
tool
pivot
tool part
ram
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
Application number
EP82100471A
Other languages
German (de)
English (en)
Other versions
EP0058828A2 (fr
EP0058828A3 (en
Inventor
Zoltan Laszlofalvi
Heinrich Dr. Kunkel
Armin Olschewski
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.)
SKF GmbH
Original Assignee
SKF 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 SKF GmbH filed Critical SKF GmbH
Publication of EP0058828A2 publication Critical patent/EP0058828A2/fr
Publication of EP0058828A3 publication Critical patent/EP0058828A3/de
Application granted granted Critical
Publication of EP0058828B1 publication Critical patent/EP0058828B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18992—Reciprocating to reciprocating
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20558—Variable output force
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y10T74/20588—Levers toggle

Definitions

  • the invention relates to a lever tool with progressive translation to increase the force in presses and the like. Consisting of a holding plate fastened to the ram of the machine, an associated movable tool part and a receiving plate for a stationary tool part.
  • a press for punching, embossing, deep drawing and the like consists, among other things, of a ram driven in various ways and of a base plate which is firmly connected to the frame.
  • the ram and base plate have facilities for holding interchangeable tools.
  • the usability of the press is limited, among other things, by the maximum pressing force and the stroke.
  • the machines required by industry are usually purchased in accordance with the current products in terms of their performance. It is not uncommon for products to be produced that can no longer be processed with the existing machine equipment because the requirements exceed the technical data of the press. This is particularly often the case with regard to the available pressing force.
  • a high-pressure press is known from CH-A75 027, in which a toggle lever system is used which generates a high pressure, particularly at the end of the pressing process.
  • the stroke between the movable and the stationary tool plate of this known embodiment is very small and must in any case be generated by a much larger stroke movement of the drive piston. As a result, this press cannot be used for the intended purpose.
  • the object of the invention is to provide a lever tool as an auxiliary device for presses, with which the pressing force can be increased without having to make major changes to the press itself and without significantly reducing the stroke of the ram.
  • the object is achieved by an essentially triangular lever rocker with pivot points provided in the region of the corners of this triangle, of which the lower pivot point is articulated via a compensating arm with the movable tool part, the internal articulated with the holding plate and the outer articulated via a further compensating arm with the Recording plate are connected, wherein the lower pivot point is arranged in the starting position inside and with the plunger lowered outside the connecting line between the pivot point and that on the movable tool part, and by an axial guide extending in the direction of the plunger for the movable tool part.
  • the lever tool is provided with an additional axial guide for the movable tool part.
  • a guide pin can be attached in the extension of the plunger, on which the movable tool part can slide in the axial direction. The levers then only have the task of power transmission.
  • the receiving plate for the fixed tool part is made separately from the frame.
  • the stability of the press frame is often not sufficient, so that this must be reinforced by suitable measures.
  • One possibility is to provide a separate plate corresponding to the requirements for receiving the fixed tool part.
  • the second corner pivot point of the lever arm is attached to this via the compensating arm.
  • the mounting plate itself is detachably anchored to the press frame. In this case, the pressing force obtained by the lever tool according to the invention is transmitted as a tensile force via the compensating arm to the separate mounting plate, so that no overloading of the press frame occurs.
  • At least two lever systems arranged symmetrically to the axis of the tool parts are provided.
  • the forces can be sensibly divided at relatively high forces, so that the individual pivot points only have to transmit a corresponding proportion of the total force and can therefore also be made weaker.
  • Another advantage is that with a uniform arrangement of several lever systems around the axis of the tools, the movable tool part is guided well at the same time.
  • the holding plate, the receiving plate, the two tool parts, the lever arms and the compensating arms form an exchangeable unit.
  • This preferred version can be installed in the press in a few simple steps. The balance of forces is matched to the two tool parts and the workpiece to be manufactured.
  • an optimized lever tool can be provided as an interchangeable component.
  • the invention shows a solution which can be used for many cases and which is economically effective in particular when the existing mechanical devices are overwhelmed with regard to power reserves.
  • lever tool shown in FIG. 1 only the essentials for the function are shown.
  • Two lever systems of the same design are arranged symmetrically to the axis of the tool parts. In the right half of the picture, the plunger 1 is lowered, while the left half of the picture shows the starting position.
  • the lever tool essentially consists of a holding plate 2, a movable tool part 3, a receiving plate 4 and the two lever systems 6, 9, 12.
  • the lever arms 6 are essentially triangular, a pivot point 7, 8, 11 being arranged at each corner.
  • the inner corner pivot 7 shown in the right half of the figure is articulated to the holding plate 2
  • the lower corner pivot 8 is articulated to the movable tool part 3 via a compensating arm 9
  • the outer corner pivot 11 is also articulated to the mounting plate 4 via a further compensating arm 12.
  • the compensating arms 9, 12 have the task of compensating for the horizontal displacement of the other corner pivot points 8, 11 when the lever rockers 6 move about their inner pivot point 7. This is clear from the comparison - the right half with the left half.
  • the mounting plate 4 is here firmly connected to the frame of the press and receives a fixed (not shown) tool part.
  • the holding plate 2 is firmly connected to the plunger 1 of the press.
  • the plunger 1 is axially extended by sliding bolts 13 on which the movable tool part 3 is guided axially.
  • this corner pivot 8 moves outwards and first reaches the connecting line between the corner pivot 7 located on the inside (in the left half of the figure) and the pivot point on the movable tool part 3.
  • this additional movement is added to the downward movement of the plunger 1, as a result of which the tool holder 3 covers a greater distance than the plunger 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Claims (4)

1. Outil à levier à transmission progressive destiné à augmenter la force de presses et dispositifs similaires, comprenant une plaque de retenue (2) attachée au coulisseau de la machine, un élément d'outil (3) y relié et une plaque de logement pour un élément d'outil fixe, caractérisé par le fait qu'il y a une coulisse à levier (6) essentiellement triangulaire pourvue de pivots (7, 8, 11) disposés aux coins de ce triangle dont le pivot inférieur (8) est articulé sur l'élément d'outil mobile (3) par l'intermédiaire d'un bras de compensation (9), le pivot intérieur (7) est articulé sur la plaque de retenue (2) et le pivot extérieur (11) est articulé sur la plaque de logement (4) par l'intermédiaire d'un autre bras de compensation (12), le pivot inférieur (8) se trouvant, en position de départ, à l'intérieur et, en position de descente du coulisseau (1), à l'extérieur d'une ligne de jonction entre le pivot (7) et le pivot de l'élément d'outil mobile (3), et qu'il y a un guidage axial (13) pour l'élément d'outil mobile (3), s'étendant en direction du coulisseau (1).
2. Outil à levier suivant la revendication 1 caractérisé par le fait que la plaque de logement (4) pour l'élément d'outil fixe est développée séparément du bâti.
3. Outil à levier suivant l'une quelconque des revendications 1 ou 2, caractérisé par le fait qu'il y a au moins deux systèmes à levier (6, 9, 12) disposés symétriquement par rapport à l'axe des éléments d'outil.
4. Outils à levier suivant l'une quelconque des revendications 1 à 3, caractérisé par le fait que la plaque de retenue (2), la plaque de logement (4), les deux éléments d'outil (3), les coulisses à levier (6) et les bras de compensation (9,12) forment une unité interchangeable.
EP82100471A 1981-02-07 1982-01-23 Outil à levier à transmission progressive Expired EP0058828B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3104263A DE3104263C2 (de) 1981-02-07 1981-02-07 Antriebsgestänge mit progressiver Übersetzung als Zwischenbauteil
DE3104263 1981-02-07

Publications (3)

Publication Number Publication Date
EP0058828A2 EP0058828A2 (fr) 1982-09-01
EP0058828A3 EP0058828A3 (en) 1983-07-20
EP0058828B1 true EP0058828B1 (fr) 1986-06-04

Family

ID=6124254

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82100471A Expired EP0058828B1 (fr) 1981-02-07 1982-01-23 Outil à levier à transmission progressive

Country Status (5)

Country Link
US (1) US4449421A (fr)
EP (1) EP0058828B1 (fr)
JP (1) JPS57146497A (fr)
BR (1) BR8200607A (fr)
DE (1) DE3104263C2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4488426A (en) * 1980-08-14 1984-12-18 The National Machinery Company Forging machine for producing rivets or the like having running adjustments
US4959989A (en) * 1988-06-09 1990-10-02 Reo Hydraulic Pierce & Form Force multiplying press
US4916932A (en) * 1988-06-09 1990-04-17 Lamb Robo, Inc. Force multiplying press
DE4224277A1 (de) * 1992-07-23 1994-01-27 Lenhauser Hammerwerk Gmbh Gelenkhebelpresse
US5481898A (en) * 1994-04-28 1996-01-09 The Whitaker Corporation Tooling module for a stamping and forming machine
US5520069A (en) * 1994-10-31 1996-05-28 Hewlett-Packard Company Synchronized lever mechanism for insertion and removal of modules in housings
US5628226A (en) * 1995-04-28 1997-05-13 J. F. Helmold & Bros., Inc. Amplified toggle press for rule bending and notching
US6086038A (en) * 1998-11-16 2000-07-11 Young & Franklin, Inc. Linkage locking device
US7708254B2 (en) * 2007-08-07 2010-05-04 Warren Controls, Inc. Actuator apparatus for operating and locking a control valve and a method for its use
CN121653690A (zh) * 2025-12-08 2026-03-13 中车山东风电有限公司 一种电解水制氢紧固装置及其使用方法

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE137710C (fr) *
AT3768B (fr) * 1900-02-15 1901-04-10 Victor Monath
CH75027A (fr) * 1915-11-29 1917-06-01 L Effort S A Presse à haute compression
FR673609A (fr) * 1929-04-20 1930-01-17 Commande de frein
DE711370C (de) * 1938-09-25 1941-09-30 Carl A Reckziegel Von Hand betaetigte Kniehebelschliessvorrichtung fuer Formtraeger von Spritz- und Pressgiessmaschinen
CH273192A (de) * 1948-08-24 1951-01-31 May Otto Ing Dr Kniehebelpresse.
DE901130C (de) * 1949-12-17 1954-05-13 Otto May Dr Ing Kniehebelpresse
FR1124269A (fr) * 1955-05-02 1956-10-08 Presse perfectionnée de montage
FR1516120A (fr) * 1967-01-24 1968-03-08 Dispositif de fermeture de moule pour machine à couler sous pression
US3738748A (en) * 1971-06-09 1973-06-12 R Weihsmantel Photographic printer
CH574323A5 (fr) * 1974-09-03 1976-04-15 Bruderer Ag
SU626980A1 (ru) * 1977-02-18 1978-10-05 Воронежский Ордена Трудового Красного Знамени Завод Кузнечнопрессового Оборудования Имени М.И.Калинина Исполнительный механизм кривошипного пресса
DD136024A1 (de) * 1977-12-09 1979-06-13 Klaus Miethbauer Antrieb fuer mechanische pressen
US4140001A (en) * 1978-01-27 1979-02-20 Moulton Thomas D Power crimping tool
JPS608835Y2 (ja) * 1979-07-31 1985-03-29 三菱電機株式会社 自動清掃装置

Also Published As

Publication number Publication date
EP0058828A2 (fr) 1982-09-01
US4449421A (en) 1984-05-22
BR8200607A (pt) 1982-12-14
DE3104263A1 (de) 1982-08-12
JPS57146497A (en) 1982-09-09
EP0058828A3 (en) 1983-07-20
DE3104263C2 (de) 1983-11-24

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