EP0442995B1 - Abkantpresse - Google Patents

Abkantpresse Download PDF

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Publication number
EP0442995B1
EP0442995B1 EP90912869A EP90912869A EP0442995B1 EP 0442995 B1 EP0442995 B1 EP 0442995B1 EP 90912869 A EP90912869 A EP 90912869A EP 90912869 A EP90912869 A EP 90912869A EP 0442995 B1 EP0442995 B1 EP 0442995B1
Authority
EP
European Patent Office
Prior art keywords
press
bars
deflection
frames
tables
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
EP90912869A
Other languages
English (en)
French (fr)
Other versions
EP0442995A1 (de
Inventor
Willem Dieperink
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.)
Beyeler Raskin SA
Original Assignee
Beyeler Raskin SA
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 Beyeler Raskin SA filed Critical Beyeler Raskin SA
Priority to AT90912869T priority Critical patent/ATE101556T1/de
Publication of EP0442995A1 publication Critical patent/EP0442995A1/de
Application granted granted Critical
Publication of EP0442995B1 publication Critical patent/EP0442995B1/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
    • B30B15/007—Means for maintaining the press table, the press platen or the press ram against tilting or deflection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0272—Deflection compensating means

Definitions

  • the invention relates to a press brake comprising an upper apron and a lower apron, at least one of the aprons comprising at least one means for moving at least part of at least one member of the press, and a device for comparing the flexion of each of the aprons arranged so as to control the actuation of said displacement means in order to compensate for the difference in flexion of said aprons.
  • some press brakes have compensating cylinders located in one or both of the aprons and which make it possible to compensate for the deformations due to the work of the press and in particular to obtain comparable flexions of the aprons. upper and lower.
  • This press comprises on the edge of at least one of the aprons a means of measuring formations, more particularly by measuring the penetration of the tool or the bending angle of the workpiece.
  • the object of the invention is to remedy the drawbacks.
  • the press brake according to the invention is characterized in that the comparison device comprises two longitudinal bars respectively arranged in longitudinal housings of each of the upper and lower decks, one of the ends of each of the bars being rendered integral with its respective housing, the other ends of each of the bars, free to move longitudinally in their respective housings, being connected to measuring means fixed respectively on each of the upper and lower aprons, so as to measure the respective displacements of said others ends of the bars in their respective housings for any deformations of the upper and lower aprons.
  • the measuring means preferably include linear inductive sensors and are connected to an electronic device arranged so as to automatically control the actuation of the displacement means until compensation for the difference in flexion of the upper and lower aprons.
  • the press brake shown in Figure 1 has an upper deck 1 supporting a punch and a lower deck 2 supporting a die.
  • the lower deck has a plurality of compensating cylinders 3, intended to remedy the defects inherent in the folding process.
  • the movement of these compensation cylinders is controlled by an electronic device 11 such as for example a digital control.
  • the device for comparing the flexion of each of the aprons comprises longitudinal measurement means 4, 5 intended to measure the elongation of said aprons when they bend, said means being connected to the digital control 11.
  • each of the aprons has two longitudinal bars 4, 5, respectively arranged in housings 6, 7 made respectively in the upper deck and in the lower deck.
  • the upper bar 4 is simply placed in the housing 6. It is made integral with the upper deck by a fixing means 14 fixed at one of its ends. During any deformation of the upper deck, the other end of the bar which is free can therefore move freely relative to the housing 6.
  • This other end of the bar is secured to a measuring means 9, such as for example a linear inductive sensor, fixed on the upper apron, at the end of the housing 6.
  • the lower bar 5 is simply placed in the housing 7.
  • One of its ends is fixed to the lower apron by means of fixing 15.
  • a second measuring means 10 similar to measuring means 9, is fixed to the lower bulkhead at the end of the housing 7 and connected to the second end of the bar 5.
  • the two sensors 9 and 10 are connected to the digital control 11, which, inter alia, is arranged so as to receive the signals emitted by each of the sensors 9 and 10 during any bending of the upper and lower aprons, to compare said signals and automatically controlling the actuation of the compensation cylinders 3 until signals at the output of the sensor 10 are obtained which are equal to those obtained at the output of the sensor 9.
  • the surfaces of the two tool holders of the upper and lower aprons will be parallel. The penetration depth of the punch in the die will then be constant over the entire length of the bend.
  • the upper bar 4 can be housed in the lower part of the upper deck, in a housing 6 produced on the surface of one of its faces.
  • This housing can of course be produced at any other location on the upper deck or the upper tool holder.
  • the lower bar 5 shown in Figure 4 is arranged in a housing 7 made at the lower part of the table 8 of the lower deck.
  • This housing can of course also be produced at any other location on the lower deck.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (3)

  1. Abkantpresse, mit einer oberen Wange (1) und einer unteren Wange (2), wobei wenigstens eine der Wangen wenigstens eine Verschiebeanordnung (3) für wenigstens einen Abschnitt wenigstens eines Teils der Presse aufweist, sowie mit einer Vergleichsanordnung für die Durchbiegung einer jeden Wange, die so ausgestaltet ist, daß sie die Betätigung der Verschiebeanordnung steuert zur Kompensation des Unterschiedes der Durchbiegung der Wangen, dadurch gekennzeichnet, daß die Vergleichsanordnung zwei Längsstäbe (4, 5) aufweist, die in entsprechenden Längsausnehmungen (6, 7) in der oberen und unteren Wange angeordnet sind, wobei zwei Enden der beiden Stäbe fest mit ihren zugehörigen Ausnehmungen verbunden sind und die anderen Enden der beiden Stäbe, die sich in Längsrichtung in den Ausnehmungen frei verschieben können, mit Meßanordnungen (9, 10) verbunden sind, die mit der oberen Wange bzw. mit der unteren Wange verbunden sind, so daß die entsprechenden Verschiebungen der anderen Enden der Stäbe in ihren entsprechenden Ausnehmungen während der gesamten Verformungen der oberen und unteren Wangen gemessen werden.
  2. Abkantpresse nach Anspruch 1, dadurch gekennzeichnet, daß die Meßanordnung lineare induktive Fühler (9, 10) aufweist.
  3. Abkantpresse nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Meßanordnung mit einer elektronischen Anordnung (11) verbunden ist, die derart ausgestaltet ist, daß sie automatisch die Betätigung der Verschiebeanordnung steuert, bis der Unterschied der Durchbiegung der oberen und unteren Wange kompensiert ist.
EP90912869A 1989-09-11 1990-09-11 Abkantpresse Expired - Lifetime EP0442995B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90912869T ATE101556T1 (de) 1989-09-11 1990-09-11 Abkantpresse.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3298/89 1989-09-11
CH3298/89A CH680773A5 (de) 1989-09-11 1989-09-11

Publications (2)

Publication Number Publication Date
EP0442995A1 EP0442995A1 (de) 1991-08-28
EP0442995B1 true EP0442995B1 (de) 1994-02-16

Family

ID=4252962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90912869A Expired - Lifetime EP0442995B1 (de) 1989-09-11 1990-09-11 Abkantpresse

Country Status (6)

Country Link
US (1) US5193452A (de)
EP (1) EP0442995B1 (de)
JP (1) JPH04501826A (de)
CH (1) CH680773A5 (de)
DE (1) DE69006713T2 (de)
WO (1) WO1991003371A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123517A1 (de) * 1991-07-16 1992-09-17 Daimler Benz Ag Hydraulische kompensation der pressentischdurchbiegung an tiefziehpressen
DE4138286A1 (de) * 1991-11-21 1993-05-27 M & S Brugg Ag Presse
DE4214818C2 (de) * 1992-05-05 1994-10-06 Daimler Benz Ag Hydraulische Durchbiegungs-Kompensation an Tiefziehpressen
DE4215807C2 (de) * 1992-05-15 1998-03-19 Mannesmann Ag Rohrbiegepresse
JPH08108957A (ja) * 1994-10-07 1996-04-30 Shikoku Kakoki Co Ltd テープ接続装置
US6250216B1 (en) 1999-03-19 2001-06-26 The Minster Machine Company Press deflection controller and method of controlling press deflection
AT411164B (de) * 2000-08-16 2003-10-27 Trumpf Maschinen Austria Gmbh Verfahren zum betrieb einer biegepresse und biegepresse, insbesondere abkantpresse
ITTV20010091A1 (it) * 2001-07-06 2003-01-06 Luciano Gasparini Dispositivo integratore per rilevare e recuperare la deformazione delle spalle in una macchina presso piegatrice
DE60327042D1 (de) 2003-02-26 2009-05-20 Bystronic Laser Ag Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse
US20040231397A1 (en) * 2003-05-23 2004-11-25 Faitel William M. Tonnage monitor for a mechanically driven press
FR2942980B1 (fr) * 2009-03-13 2011-04-08 Amada Europ Presse plieuse pour le pliage de feuilles
TR201112647A2 (tr) 2011-12-20 2012-05-21 Durmazlar Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Abkant preslerde sac sehimini engelleyen dinamik bombeleme mekanizması.
EP3010709B1 (de) * 2013-06-19 2022-06-01 Bruderer Ag Verfahren zum verwölben des maschinenbetts und/oder des pressenstössels einer stanzpresse sowie stanzpresse
JP6243752B2 (ja) * 2014-02-25 2017-12-06 株式会社アマダホールディングス プレスブレーキ
AT516377B1 (de) * 2015-02-05 2016-05-15 Trumpf Maschinen Austria Gmbh Biegevorrichtung mit Messeinrichtung

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1200920A (fr) * 1958-07-01 1959-12-24 Dispositif pour la compensation et le contrôle des déformations subies par les parties actives de presses ou machines analogues
FR1539817A (fr) * 1967-07-26 1968-09-20 Promecam Sisson Lehmann Soc Machine hydraulique pour la déformation de métaux en feuilles
FR1586274A (de) * 1967-10-10 1970-02-13
DE1703297A1 (de) * 1968-04-29 1972-02-17 Freudenberg Carl Fa Heizplattenpresse mit selbstkompensierenden Zylinderkolbenanordnungen
US3677009A (en) * 1970-11-12 1972-07-18 Kelso Marine Inc Control arrangement for the male die of a hydraulic press brake
US3914975A (en) * 1970-12-25 1975-10-28 Amada Co Ltd Hydraulic press brake
FR2119528A5 (de) * 1970-12-25 1972-08-04 Amada Co Ltd
DE2630966A1 (de) * 1976-07-08 1978-01-12 Mannesmann Ag Steuerung einer hydraulischen presse, insbesondere einer o-presse fuer die grossrohrherstellung
JPS56114600A (en) * 1980-02-12 1981-09-09 Ishikawajima Harima Heavy Ind Co Ltd Press controlling method and device
DE3101616C2 (de) * 1981-01-20 1983-02-10 G. Siempelkamp Gmbh & Co, 4150 Krefeld Holmverformungsmeßeinrichtung für Plattenpressen zur Herstellung von Spanplatten, Faserplatten, Laminatplatten u.dgl.
FR2507507B1 (fr) * 1981-06-16 1986-07-04 Promecan Sisson Lehmann Dispositif de bombage d'un porte-outil d'une presse plieuse ou analogue
CH653289A5 (en) * 1982-11-03 1985-12-31 Beyeler Machines Sa Hydraulic press including a stationary apron and a movable apron
JPS59193718A (ja) * 1983-04-18 1984-11-02 Amada Co Ltd プレスブレ−キにおける上下型の並行維持制御方法
JPH0688079B2 (ja) * 1986-03-25 1994-11-09 株式会社アマダ プレスブレーキにおけるクラウニング装置
JPH0686036B2 (ja) * 1986-04-16 1994-11-02 関東自動車工業株式会社 プレス機械の平行度測定装置

Also Published As

Publication number Publication date
EP0442995A1 (de) 1991-08-28
WO1991003371A1 (fr) 1991-03-21
CH680773A5 (de) 1992-11-13
DE69006713T2 (de) 1994-07-14
JPH04501826A (ja) 1992-04-02
US5193452A (en) 1993-03-16
DE69006713D1 (de) 1994-03-24

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