EP0058828A2 - Outil à levier à transmission progressive - Google Patents

Outil à levier à transmission progressive Download PDF

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Publication number
EP0058828A2
EP0058828A2 EP82100471A EP82100471A EP0058828A2 EP 0058828 A2 EP0058828 A2 EP 0058828A2 EP 82100471 A EP82100471 A EP 82100471A EP 82100471 A EP82100471 A EP 82100471A EP 0058828 A2 EP0058828 A2 EP 0058828A2
Authority
EP
European Patent Office
Prior art keywords
lever
tool
tool part
ram
holding plate
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
EP82100471A
Other languages
German (de)
English (en)
Other versions
EP0058828B1 (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
SKF Kugellagerfabriken 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, SKF Kugellagerfabriken 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 attached to the ram of the machine, a movable tool part connected thereto and a mounting plate for a fixed 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 plunger 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 are compatible with the existing machine equipment can no longer be processed because the requirements exceed the technical data of the press. This is particularly often the case with regard to the available pressing force.
  • 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 rocker arm with pivot points provided in the corners of this triangle, one of which is articulated via a compensating arm to the movable tool part, the second is articulated to the holding plate and the third is articulated to the mounting plate via a further compensating arm are.
  • 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 prepare a separate plate that meets the requirements for receiving the stationary tool part see.
  • 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 simultaneously guided well.
  • an axial guide running in the direction of the plunger is provided 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 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 point 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 when comparing 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.
  • the pressing force acts on the holding plate 2 on the inside (above in the left half of the figure) corner pivot points 7 of the lever rockers 6. Since the outer corner pivot points 11 are connected to the mounting plate 4 via the compensating arms 12 and their position in Can not change the direction of the pressing force, the corner pivot points 8 of the rocker arms 6 pivot about the outer corner pivot points 11.
  • the compensating arms 9 there is an additional axial movement of the tool part 3 relative to the holding plate 2, or relative to the plunger 1 of the press, the additional movement to ram movement vectorially added.
  • the lower corner pivot 8 of the lever arm 6 is still inside.
  • the stroke loss occurring due to the increase in the pressing force in the second partial area is compensated for by a larger stroke in the first partial area relative to the ram 1, so that almost the entire maximum stroke of the press is retained.
  • Fig. 2 shows the course of the pressing force resulting with the lever tool according to the invention (curve B).
  • curve B the course of the pressing force resulting with the lever tool according to the invention
  • the described and illustrated embodiment is an example of the lever tool according to the invention. However, it is possible at any time to adapt to the respective application by changing the leverage ratios and forms.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
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 true EP0058828A2 (fr) 1982-09-01
EP0058828A3 EP0058828A3 (en) 1983-07-20
EP0058828B1 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 (9)

* 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
US4916932A (en) * 1988-06-09 1990-04-17 Lamb Robo, Inc. Force multiplying press
US4959989A (en) * 1988-06-09 1990-10-02 Reo Hydraulic Pierce & Form 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

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
DE3104263A1 (de) 1982-08-12
EP0058828B1 (fr) 1986-06-04
US4449421A (en) 1984-05-22
DE3104263C2 (de) 1983-11-24
BR8200607A (pt) 1982-12-14
JPS57146497A (en) 1982-09-09
EP0058828A3 (en) 1983-07-20

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