EP0058827B1 - Outil à levier - Google Patents

Outil à levier Download PDF

Info

Publication number
EP0058827B1
EP0058827B1 EP19820100470 EP82100470A EP0058827B1 EP 0058827 B1 EP0058827 B1 EP 0058827B1 EP 19820100470 EP19820100470 EP 19820100470 EP 82100470 A EP82100470 A EP 82100470A EP 0058827 B1 EP0058827 B1 EP 0058827B1
Authority
EP
European Patent Office
Prior art keywords
lever
tool
plate
tool part
force
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
EP19820100470
Other languages
German (de)
English (en)
Other versions
EP0058827A3 (en
EP0058827A2 (fr
Inventor
Bernhard Bauer
Armin Olschewski
Herman Hetterich
Peter Horling
Herbert Dobhan
Karlheinz Wagner
Zoltan Laszlofalvi
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 EP0058827A2 publication Critical patent/EP0058827A2/fr
Publication of EP0058827A3 publication Critical patent/EP0058827A3/de
Application granted granted Critical
Publication of EP0058827B1 publication Critical patent/EP0058827B1/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
    • B30B1/02—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 lever mechanism

Definitions

  • the invention relates to a lever tool for increasing the force in presses and the like., Consisting of a holding plate attached to the ram of the machine, a movable tool part connected to it and a mounting plate for a fixed tool part, the force being introduced centrally via the holding plate in Axis direction of both tool parts is directed.
  • a press for punching, embossing, deep drawing and the like consists, among other things, of a ram driven in various ways and a base plate 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 according to their performance in running products. It is not uncommon for products to arise unexpectedly, which can no longer be processed with the existing machine equipment because the requirements exceed the technical data. This is particularly often the case with regard to the available pressing force.
  • the object of the invention is to provide a simple auxiliary device for presses with which the pressing force effective on the tool can be increased without having to make major changes to the press.
  • the object is achieved in that the movable tool part is mounted in a pivot point arranged between the ends of a lever, one end of which is articulated to the holding plate and the other end of which is articulated to the receiving plate.
  • At least one of the ends of the lever is articulated to the holding plate or to the receiving plate via compensating arms.
  • the fulcrum is optionally located at different locations between the ends of the lever.
  • the degree of force increase can be set in a simple manner and adapted to the respective application. If the fulcrum for the movable tool part coincides with the end of the lever connected to the holding plate, no increase in force is achieved and the pressing force of the ram is effective on the movable tool part. If the fulcrum lies in the middle of the lever, the pressing force doubles and can be further increased by moving the fulcrum towards the other end of the lever connected to the mounting plate.
  • the receiving plate for the stationary tool part is formed 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 that meets the requirements for receiving the stationary tool part.
  • the lever end is attached to this, for example via an above-mentioned compensating arm.
  • the mounting plate itself is detachably anchored to the press frame.
  • the pressing force obtained by the lever tool according to the invention is in this case 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 levers arranged symmetrically to the axis of the tool parts are provided.
  • an axial guide running in the direction of the tappet is provided.
  • the lever tool is provided with an additional axial guide for the movable tool part.
  • a guide pin is attached, on which the movable tool part can slide in the axial direction. The levers then have the task of power transmission.
  • the holding plate, the receiving plate, the two tool parts, the levers and the compensating arms form a replaceable unit.
  • This preferred version can be installed in the press in a few simple steps.
  • the force ratios are matched to the two tool parts and the workpiece to be manufactured.
  • a lever tool that is optimized on all sides can thus be provided as an exchangeable 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.
  • the lever tool consists essentially of a holding plate 2, a tool holder 3, a receiving plate 4 and a lever mechanism described in more detail below.
  • the corresponding pivot point 5 on the lever 7 is arranged in the middle between the ends 8, 8 '.
  • the end 8 is articulated to the holding plate 2 via a compensating arm 9, the end points of which are also articulated via bolts 6.
  • the other end 8 'of the lever 7 is articulated to the mounting plate 4 in the same way via a further compensating arm 9'.
  • the compensating arms 9, 9 ' have the task of compensating for the relative horizontal displacement of the ends 8, 8' when the lever 7 moves about its center pivot 5. This is clearly evident when comparing the right half with the left half.
  • the mounting plate 4 is firmly connected to the frame 11 of the press by means of screws 10 and has a stationary tool part 12.
  • 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 tool holder 3 is guided axially.
  • the tool holder 3 receives a movable tool part 14.
  • the press force acts on the inner ends 8 of the levers 7 through the plunger 1 of the press via the holding plate 2 and the compensating arms 9. Since the outer ends 8 'of the lever 7 are connected to the mounting plate 4 via the compensating arms 9' and cannot change their position in the direction of the pressing force, the distance between the ends 8, 8 'is the power arm of the lever 7.
  • the load arm is in the example shown half of the power arm and is formed by the distance between the center pivot point 5 connected to the tool holder and the outer ends 8 '. Since the ratio between the force arm and the load arm is 2: 1, the lever 7 acts on the tool holder 3 via the center pivot 5, twice the pressing force applied by the plunger 1.
  • the outer compensating arms 9 'connected to the mounting plate 4 are subjected to tension and must derive the difference in forces.
  • the receiving plate 4 is therefore subjected to bending and is designed with regard to its strength so that the additional, occurring due to the increase in force from the frame 11 of the press is kept away.
  • the lever tool shown in FIG. 2 differs from the one described with reference to FIG. 1 only in the symmetrical arrangement of four levers 7 with the corresponding compensating arms 9.
  • the tool holder 3 has continuous bolts for two levers 7 in place of the pivot points 5 15 on.
  • the corresponding pivot points of two balancing arms 9 and 9 ' are connected to the levers 7 by common bolts 16.
  • the tool parts 12, 14 are arranged between the sliding bolts 13.
  • auxiliary devices such as those represented by the lever tool according to the invention, can be used in all machine and manual functions in which a linear force has to be generated.

Landscapes

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

Claims (7)

1. Outil à levier destiné à augmenter la force de presses et dispositifs similaires, comprenant une plaque de retenue (2) attachée au coulisseau (1) de la machine, un élément d'outil mobile (14) y relié et une plaque de logement (4) pour un élément d'outil fixe (12), la charge étant appliquée centralement en direction axiale des deux éléments d'outil en passant par la plaque de retenue, caractérisé par le fait que l'élément d'outil mobile (14) est monté sur un pivot (5) disposé entre les bouts d'un levier (7) dont un bout (8) est articulé sur la plaque de retenue (2) tandis que l'autre bout (8') est articulé sur la plaque de logement (4).
2. Outil à levier suivant la revendication 1, caractérisé par le fait qu'au moins un des bouts (8, 8') du levier (7) est articulé sur la plaque de retenue (2) ou la plaque de logement (4) par l'intermédiaire de bras de compensation (9,9').
3. Outil à levier suivant la revendication 1 ou 2, caractérisé par le fait que le pivot (5) est facultativement disposé à de différents endroits entre les bouts (8,8') du levier (7).
4. Outil à levier suivant l'une quelconque des revendications 1 à 3, caractérisé par le fait que la plaque de logement (4) pour l'élément d'outil fixe (12) est développé séparément du bâti (11
5. Outil à levier suivant l'une quelconque des revendications 1 à 4, caractérisé par le fait qu'il y a au moins deux leviers (7) disposés symétriquement par rapport à l'axe des éléments d'outil (12, 14).
6. Outil à levier suivant l'une quelconque des revendications 1 à 5, caractérisé par le fait qu'il y a pour l'élément d'outil mobile (14) un guidage axial (13) s'étendant en direction du coulisseau (1).
7. Outil à levier suivant l'une quelconque des revendications 1 à 6, caractérisé par le fait que la plaque de retenue (2), la plaque de logement (4), les deux éléments d'outil (12,14), les leviers (7) et les bras de compensation (8) forment une unité interchangeable.
EP19820100470 1981-02-07 1982-01-23 Outil à levier Expired EP0058827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813104274 DE3104274C2 (de) 1981-02-07 1981-02-07 Zwischenbauteil zur Steigerung der Preßkraft
DE3104274 1981-02-07

Publications (3)

Publication Number Publication Date
EP0058827A2 EP0058827A2 (fr) 1982-09-01
EP0058827A3 EP0058827A3 (en) 1983-07-20
EP0058827B1 true EP0058827B1 (fr) 1985-09-11

Family

ID=6124261

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820100470 Expired EP0058827B1 (fr) 1981-02-07 1982-01-23 Outil à levier

Country Status (4)

Country Link
EP (1) EP0058827B1 (fr)
JP (1) JPH0228437B2 (fr)
BR (1) BR8200509A (fr)
DE (1) DE3104274C2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224277A1 (de) * 1992-07-23 1994-01-27 Lenhauser Hammerwerk Gmbh Gelenkhebelpresse
CN109079396A (zh) * 2018-09-25 2018-12-25 无锡三虹重工机械设备有限公司 一种变位机侧板的焊接工装及具有其的焊接工作站
CN114670151B (zh) * 2022-05-26 2022-08-16 苏州联讯仪器有限公司 一种温控夹紧装置、压接盒以及误码测试装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE189126C (fr) *
US675254A (en) * 1900-10-24 1901-05-28 Blacksmith E Takken Combination punch and shears.
FR1038102A (fr) * 1951-06-05 1953-09-25 Presse à main
US2890649A (en) * 1957-09-30 1959-06-16 Hubert E Hodges Presses and the like
DK100600C (da) * 1962-12-11 1964-12-14 Edvard Krogsgaard Iversen Presse, navnlig kantpresse.
CH574323A5 (fr) * 1974-09-03 1976-04-15 Bruderer Ag

Also Published As

Publication number Publication date
JPS57146496A (en) 1982-09-09
JPH0228437B2 (ja) 1990-06-25
DE3104274C2 (de) 1982-12-02
EP0058827A3 (en) 1983-07-20
DE3104274A1 (de) 1982-08-12
EP0058827A2 (fr) 1982-09-01
BR8200509A (pt) 1982-12-07

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