EP1112130B1 - Biegepresse mit einem aktiven unterbalken - Google Patents

Biegepresse mit einem aktiven unterbalken Download PDF

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Publication number
EP1112130B1
EP1112130B1 EP99941714A EP99941714A EP1112130B1 EP 1112130 B1 EP1112130 B1 EP 1112130B1 EP 99941714 A EP99941714 A EP 99941714A EP 99941714 A EP99941714 A EP 99941714A EP 1112130 B1 EP1112130 B1 EP 1112130B1
Authority
EP
European Patent Office
Prior art keywords
bottom panel
notch
wall
free
panel
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
EP99941714A
Other languages
English (en)
French (fr)
Other versions
EP1112130A1 (de
Inventor
Claude Gascoin
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.)
Amada Europe SA
Original Assignee
Amada Europe 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 Amada Europe SA filed Critical Amada Europe SA
Publication of EP1112130A1 publication Critical patent/EP1112130A1/de
Application granted granted Critical
Publication of EP1112130B1 publication Critical patent/EP1112130B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the present invention relates to a press brake for the folding of metal sheets of the type comprising an upper deck disposed above a lower deck, the latter being fixed in support of its ends while the upper deck is movable and actuated in a vertical plane by drive members also located at its two ends.
  • the drive bodies provide the necessary force to bending of metal sheets or sheets and these cause the deformation of the two aprons in opposite directions.
  • the longitudinal deformation curves of the decks are substantially symmetrical by compared to the deck separation plan so that the gap maximum between the aprons is located near the middle of the thrust (drives and fixed supports) and represents twice the maximum deformation of each deck.
  • the maximum distance between the upper and lower aprons is an essential parameter of the precision and quality of the fold produced and in the case mentioned above, the two aprons being more spread in the middle than at the ends, the fold will be more open in the center than at said ends.
  • Each slot has an upper wall and a wall lower connected by a bottom as well as an opening located at the level corresponding side edges of the plate.
  • the plate thus has a lower part and a part upper located respectively below and above the slots.
  • the lower part of the plate is fixed to two flanges which also support the upper apron, while the upper part of the plate or more exactly its ends are free to move in a vertical plane.
  • This Japanese utility model also indicates that the slots are each provided with a movable member whose position is adjustable manually or automatically, inside the slots.
  • This organ mobile is directly in contact with the lower walls and upper of each slot and its movement makes it possible to limit virtually the depth of said slots and therefore decrease as and as the movable member approaches the openings, the elasticity of the lower apron.
  • the pressure exerted on the free upper part of the lower deck depends only on the force applied by the work drive members on the upper deck and therefore by way of consequence by the sheet to bend and nothing in these conditions allows to act voluntarily on these pressures and therefore on the deformations of said upper part of the lower deck so that these are perfectly parallel to the deformations of the upper deck.
  • the curvature of deformation of the lower deck is then maximum and in this case the intrinsic elasticity of the part upper part of the lower deck can be irreparably degraded.
  • the object of the present invention is to overcome the problems previously mentioned techniques satisfactorily.
  • a press folding machine for folding metal sheets of the type comprising a upper apron arranged above a lower apron, the apron lower being fixed in support at its ends while the apron upper is mobile and actuated in a vertical plane by members also located at its ends, the lower deck being constituted by a plate comprising a free upper part and a fixed lower part delimited by two symmetrically slits identical with respect to the median transverse plane of said lower deck, each slot having an upper wall and a lower wall connected by a bottom and an opening located at the edges corresponding sides of the plate, characterized in that each slot is equipped with a displacement member connecting the upper part free and the fixed lower part of the lower apron to cause a approximation of the upper wall of the slot towards its lower wall, whereby the deformation curvature of the free upper part of said lower apron.
  • each organ of movement comprises on the one hand a fixed part connected to the wall bottom of the slot and on the other hand a movable part secured to the upper wall of the slot.
  • each organ of displacement is located at the opening of the slots, so that allow precise movement of the free ends of the walls upper of said slots.
  • the press brake includes control set for ordering independently each displacement member depending on the curvature that we want to give to each end of the upper part free of the lower apron.
  • control unit further comprises measuring means to obtain information on the effective curvature of the part upper free of the lower bulkhead and the programmed curvature.
  • the displacement member according to the invention makes it possible to safely check and adjust the deflection curvature of the free upper part of the lower apron and this without risk of exceeding the elastic limit of said lower apron.
  • Figures 1 and 2 show a press brake according to the invention.
  • This press brake includes an upper deck 1 and a lower apron 2 mounted in a frame formed by two flanges 9a and 9b joined together notably by a bracing beam (not shown).
  • the upper 1 and lower 2 aprons are contained in a same vertical plane and the upper apron slides in relation to flanges 9a and 9b using guide means 8a and 8b constituted by example by two hydraulic cylinders.
  • the bending angle of a metal sheet or sheet depends on the importance of the penetration of the punch P inside the die M, and therefore to obtain a constant angle bending over the entire length of the fold, this penetration must be the same on all this length.
  • the lower apron 2 is constituted by a plate provided with two slots 3a and 3b symmetrically identical with respect to the plane transverse median of the lower deck shown in Figure 1 by the cutting line II-II.
  • Each slot 3a and 3b has an upper wall 31a and 31b and a bottom wall 32a and 32b arranged transversely by relative to the plate forming the lower deck 2.
  • Each slot has, in addition, a bottom connecting the walls upper 31a and 31b and lower 32a and 32b at the zone level center of the lower deck as well as an opening at the level of the corresponding side edges of said lower apron 2.
  • the upper walls 31a and 31b are inclined by a certain angle with respect to the lower walls 32a and 32b arranged horizontally. This angle can, of course, vary depending on the organ displacement fitted to said slots or else according to the range of press brake used.
  • the lower deck 2 comprises an upper part 22 and a lower part 21 situated respectively above and below of the two slots 3a and 3b.
  • the lower part 21 of the lower deck 2 is fixed at its ends to the flanges 9a and 9b forming the frame of the press brake.
  • the fixing of the lower part 21 can be carried out by solder or any other means.
  • the upper part 22 of the lower deck 2 is in turn only connected to the lower part 21 by means of the central zone located between the two bottoms of said slots 3a and 3b.
  • the upper part 22 of the lower deck 2 has a degree of freedom in the vertical plane whereby its free ends can be moved relative to the fixed ends of the part lower 21.
  • each slot 3a and 3b is equipped a displacement member 6a and 6b connecting the upper part 22 and the lower part 21 of the lower deck 2.
  • the displacement members 6a and 6b are constituted by jacks Hydraulic.
  • Each hydraulic cylinder 6a and 6b comprises a cylinder 4a and 4b fixed to the bottom wall 32a and 32b of each slot and a rod piston 5a and 5b connected to the upper wall 31a and 31b by screwing or all other way.
  • These hydraulic cylinders 6a and 6b are arranged at the opening of the slots so as to allow precise movement of the free ends of the upper walls 31a and 31b of said slots 3a and 3b, as will be described in detail later.
  • control assembly 13 for independently controlling the stroke of each piston rod Sa and 5b of the hydraulic cylinders 6a and 6b depending on the curvature that we want to give to each of the ends of the upper part 22 of the lower deck 2.
  • the control assembly 13 allows an operator to enter the desired deformation curvature for each of the halves of the free upper part of lower deck 2, these two halves being defined by the median transverse plane of said lower deck 2.
  • the control assembly 13 includes a processing 11 constituted for example from a microprocessor. he also includes a keyboard 10 for entering the unit processing 11 the parameters of the deformation curvature to be produced for each half of the upper part 22 of the lower deck 2.
  • Keyboard 10 could be replaced by any other means data acquisition.
  • the processing unit 11 is coupled to a program memory 12.
  • Memory 12 contains in particular correspondence tables between the parameters of each curvature of deformation which can be adjusted and the corresponding displacements which must be applied to the piston rods 5a and 5b of the cylinders hydraulics 6a and 6b.
  • the operator will also enter using the keyboard 10 of the data in the control unit concerning the nature of the sheet to be folded, its thickness, its length and the characteristics of the fold to be obtained (fold angle, dimensions of tools ).
  • the unit of processing 11 is likely to send move commands to each cylinder 6a and 6b so that these bring the walls together upper 31a and 31b respectively towards the lower walls 32a and 32b of the slots so that the deformation curvature of the part upper 22 of the lower deck 2 is perfectly parallel to the deformation curvature of the upper deck 1 during the folding of the sheet. It should also be noted that cylinders 6a and 6b will be locked in position during the folding phase of said sheet.
  • control valves 14a and 14b supplied by pumps (not shown). These valves 14a and 14b will receive control signals from the processing unit 11 and directly feed the cylinders 6a and 6b.
  • control circuit 13 makes it possible to control independently each cylinder 6a and 6b, which makes it possible to carry out eccentric folds on a sheet which may be arranged only on one of the two halves of the lower apron 2, or else folds centered over the entire length of the lower apron 2, the jacks 6a and 6b then receiving in this case the same movement instructions.
  • control assembly 13 comprises means measures 7a and 7b arranged at the openings of the two slots 3a and 3b. These measurement means have the function of measuring the distance between the free end of the upper part 22 and the end fixed from the lower part 21 of the lower deck 2, in order to control the deformation curvature of the lower deck 2.
  • the measurements taken by these measurement means 7a and 7b are then received by the processing unit at the levels of inputs C and D. These measurements of the deformation curvature of each half of the deck lower 2 are compared to those that were originally introduced in the processing unit.
  • the processing unit then sends to cylinders 6a and 6b error correction instructions.
  • control assembly can continuously send error correction instructions to the displacement members 6a and 6b.
  • the invention is in no way limited to the mode of realization described and represented which was given only by way of example.
  • the displacement members 6a and 6b can be moved manually or electrically or by any other means constituting a technical equivalent.
  • each slot can be parallel to each other and in this case we can plan advantageously to have the fixed part of the displacement member in a notch made on the bottom wall of each slot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Presses And Accessory Devices Thereof (AREA)

Claims (6)

  1. Biegepresse zum Biegen von Metallblechen mit einem oberen Rahmen (1), welcher oberhalb eines unteren Rahmens (2) angeordnet ist, wobei der untere Rahmen (2) an seinen Enden fest gelagert ist, während der obere Rahmen (1) beweglich und in einer vertikalen Ebene durch Antriebseinrichtungen (8a, 8b) betätigbar ist, welche sich ebenfalls an seinen Enden befinden, wobei der untere Rahmen durch eine Tafel gebildet wird, welche einen freien oberen Teil (22) und einen festen unteren Teil (21) aufweist, getrennt durch zwei Kerben (3a, 3b), welche gleich und symmetrisch sind bezüglich der mittleren quer verlaufenden Ebene des unteren Rahmens, wobei jede Kerbe eine obere Wand (31a, 31b) sowie eine untere Wand (32a, 32b) aufweist, welche durch einen Kerbboden verbunden sind, sowie eine Öffnung, welche sich auf der Höhe der übereinstimmenden seitlichen Ränder der Tafel befindet,
    dadurch gekennzeichnet, dass jede Kerbe (3a, 3b) mit einer Auslenkungseinrichtung (6a, 6b) versehen ist, welche den freien oberen Teil (22) und den festen unteren Teil (21) des unteren Rahmens verbindet, um eine Annäherung der oberen Wand der Kerbe an ihre untere Wand herbeizuführen, wodurch auf kontrollierte Art und Weise die Kurve der Verformung des freien oberen Teils des unteren Rahmens steuerbar ist.
  2. Biegepresse nach Anspruch 1, dadurch gekennzeichnet, dass jede Auslenkungseinrichtung (6a, 6b) einerseits einen festen Teil (4a, 4b) aufweist, welcher mit der unteren Wand (32a, 32b) der Kerbe verbunden ist, und andererseits einen beweglichen Teil (5a, 5b), welcher mit der oberen Wand (31a, 31b) der Kerbe verbunden ist.
  3. Biegepresse nach Anspruch 1, dadurch gekennzeichnet, dass jede Auslenkungseinrichtung (6a, 6b) auf der Höhe der Öffnung der Kerben angeordnet ist, um eine präzise Auslenkung der freien Enden der oberen Wände der Kerben zu ermöglichen.
  4. Biegepresse nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sie eine Steuerung (13) zum unabhängigen Ansteuern jeder Auslenkungseinrichtung als Funktion der Krümmung aufweist, welche jedem Ende der freien oberen Wand des unteren Rahmens aufgeprägt werden soll.
  5. Biegepresse nach Anspruch 4, dadurch gekennzeichnet, dass die Steuerung (13) folgendes aufweist:
    Mittel (10) zum Empfangen von Informationen über die Krümmung, welche dem freien oberen Teil des unteren Rahmens aufgeprägt werden soll; und
    Mittel (11) zum Umwandeln dieser Informationen über die Krümmung in Steuerbefehle für die Auslenkungseinrichtungen (6a, 6b).
  6. Biegepresse nach Anspruch 5, dadurch gekennzeichnet, dass die Steuerung außerdem Messeinrichtungen (7a, 7b) zum Erhalten von Informationen über die effektive Krümmung des freien oberen Teils des unteren Rahmens sowie über die programmierte Krümmung aufweist.
EP99941714A 1998-09-09 1999-09-08 Biegepresse mit einem aktiven unterbalken Expired - Lifetime EP1112130B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9811240 1998-09-09
FR9811240A FR2782942B1 (fr) 1998-09-09 1998-09-09 Presse plieuse a tablier inferieur actif
PCT/FR1999/002131 WO2000013813A1 (fr) 1998-09-09 1999-09-08 Presse plieuse a tablier inferieur actif

Publications (2)

Publication Number Publication Date
EP1112130A1 EP1112130A1 (de) 2001-07-04
EP1112130B1 true EP1112130B1 (de) 2002-04-10

Family

ID=9530251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99941714A Expired - Lifetime EP1112130B1 (de) 1998-09-09 1999-09-08 Biegepresse mit einem aktiven unterbalken

Country Status (7)

Country Link
US (1) US6401512B1 (de)
EP (1) EP1112130B1 (de)
JP (1) JP4434493B2 (de)
AT (1) ATE215854T1 (de)
DE (1) DE69901261T2 (de)
FR (1) FR2782942B1 (de)
WO (1) WO2000013813A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004383A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
NL2004385A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
NL2004384A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
NL2004386A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1452302B1 (de) * 2003-02-26 2009-04-08 Bystronic Laser AG Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse
ATE428945T1 (de) * 2003-12-09 2009-05-15 Reflexite Corp Methode und apparat zur herstellung einer optischen struktur
AT501264B8 (de) * 2004-09-10 2007-02-15 Trumpf Maschinen Austria Gmbh Verfahren zur herstellung eines werkteils durch biegeumformung
NL1029177C2 (nl) * 2005-06-02 2006-12-05 Safan Bv Pers.
AT507412B1 (de) * 2008-10-15 2010-05-15 Trumpf Maschinen Austria Gmbh Biegepresse mit stützlagervorrichtung für antriebsmittel
NL2006854C2 (nl) 2011-05-26 2012-12-05 Wila Bv Werkwijze en inrichting voor het compenseren van afwijkingen bij een vervormende bewerking tussen twee balken van een pers.
EP2722164B1 (de) * 2012-10-18 2017-01-18 Nivora IP B.V. Federmittel für eine Vorrichtung zur Bearbeitung eines blechähnlichen Materials
AT514080B1 (de) * 2013-05-10 2014-10-15 Trumpf Maschinen Austria Gmbh Vorrichtung und Verfahren zum Biegen von Blechen
DE102014226519A1 (de) * 2014-12-19 2016-06-23 Sms Group Gmbh Presswerkzeugteil und Vorrichtung zum Beseitigen von Planheitsfehlern an flächigen Halbzeugen
US10369613B2 (en) * 2017-02-06 2019-08-06 GM Global Technology Operations LLC Die assembly for a stamping press
JP6934968B2 (ja) * 2018-02-22 2021-09-15 株式会社アマダ プレスブレーキにおけるクラウニング方法及びプレスブレーキ
JP6868581B2 (ja) * 2018-02-22 2021-05-12 株式会社アマダ プレスブレーキにおけるクラウニング方法及びプレスブレーキ

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2119528A5 (de) * 1970-12-25 1972-08-04 Amada Co Ltd
US3914975A (en) * 1970-12-25 1975-10-28 Amada Co Ltd Hydraulic press brake
DE2317832C3 (de) * 1973-04-09 1978-03-02 Karl Mengele & Soehne Maschinenfabrik Und Eisengiesserei Guenzburg-Donau, 8870 Guenzburg Abkantpresse und dergleichen
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
US4580434A (en) * 1983-11-14 1986-04-08 Cincinnati Incorporated Deflection compensating assembly for a press brake
DE4138286A1 (de) * 1991-11-21 1993-05-27 M & S Brugg Ag Presse
JP2558928Y2 (ja) * 1991-11-26 1998-01-14 株式会社アマダ プレスブレーキ
JPH0655218A (ja) * 1992-08-07 1994-03-01 Amada Co Ltd ベンダーのクラウニング装置
DE4235971C1 (de) * 1992-10-26 1994-04-07 M & S Brugg Ag Brugg Abkantpresse
JP2000343125A (ja) * 1999-05-28 2000-12-12 Amada Co Ltd プレスブレーキ
JP2001121214A (ja) * 1999-10-27 2001-05-08 Amada Co Ltd プレスブレーキのクラウニング装置

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2004383A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
NL2004385A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
NL2004384A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
NL2004386A (en) * 2009-03-13 2010-09-14 Amada Europ A press brake for bending sheets.
FR2942979A1 (fr) * 2009-03-13 2010-09-17 Amada Europ Presse plieuse pour le pliage de feuilles
FR2942982A1 (fr) * 2009-03-13 2010-09-17 Amada Europ Presse plieuse pour le pliage de feuilles
FR2942981A1 (fr) * 2009-03-13 2010-09-17 Amada Europ Presse plieuse pour le pliage de feuilles
FR2942980A1 (fr) * 2009-03-13 2010-09-17 Amada Europ Presse plieuse pour le pliage de feuilles
FR2942983A1 (fr) * 2009-03-13 2010-09-17 Amada Europ Presse plieuse pour le pliage de feuilles
DE102010015919A8 (de) * 2009-03-13 2011-02-10 Amada Europe Abkantpresse zum Biegen von Folien
DE102010015919B4 (de) * 2009-03-13 2016-12-01 Amada Co., Ltd. Abkantpresse zum Biegen von Folien

Also Published As

Publication number Publication date
EP1112130A1 (de) 2001-07-04
WO2000013813A1 (fr) 2000-03-16
JP2002524259A (ja) 2002-08-06
ATE215854T1 (de) 2002-04-15
JP4434493B2 (ja) 2010-03-17
FR2782942A1 (fr) 2000-03-10
DE69901261T2 (de) 2002-11-28
US6401512B1 (en) 2002-06-11
FR2782942B1 (fr) 2000-12-01
DE69901261D1 (de) 2002-05-16

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