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EP1452302B1 - Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse - Google Patents

Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse Download PDF

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Publication number
EP1452302B1
EP1452302B1 EP03405126A EP03405126A EP1452302B1 EP 1452302 B1 EP1452302 B1 EP 1452302B1 EP 03405126 A EP03405126 A EP 03405126A EP 03405126 A EP03405126 A EP 03405126A EP 1452302 B1 EP1452302 B1 EP 1452302B1
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European Patent Office
Prior art keywords
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length
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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.)
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EP03405126A
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English (en)
French (fr)
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EP1452302A1 (de
Inventor
Gerrit Gerritsen
Papi Piero
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Bystronic Laser AG
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Bystronic Laser AG
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Priority to EP03405126A priority Critical patent/EP1452302B1/de
Application filed by Bystronic Laser AG filed Critical Bystronic Laser AG
Priority to AT03405126T priority patent/ATE427830T1/de
Priority to DE60327042T priority patent/DE60327042D1/de
Priority to PCT/CH2004/000090 priority patent/WO2004076161A1/fr
Priority to CNA2004800089255A priority patent/CN1767940A/zh
Priority to US10/546,909 priority patent/US7503200B2/en
Priority to CA002516998A priority patent/CA2516998A1/en
Publication of EP1452302A1 publication Critical patent/EP1452302A1/de
Application granted granted Critical
Publication of EP1452302B1 publication Critical patent/EP1452302B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/24—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam
    • B30B15/245—Control arrangements for fluid-driven presses controlling the movement of a plurality of actuating members to maintain parallel movement of the platen or press beam using auxiliary cylinder and piston means as actuating members
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/702—Overbending to compensate for springback

Definitions

  • the lower apron 2 of the press shown on the Figure 1A comprises three reaction holes 13, 13 ', 13'', passing right through the plates 3, 4 and 7.
  • Each reaction hole accommodates a compensation hydraulic cylinder 14, 14', 14 '', which rests on the reaction plates 4 and 7 and whose piston 11 supports from below at 12 on the central plate 3, as schematically illustrates the Figure 1B , to provide a compensation thrust to the upper part of the central plate 3 of the lower deck, so as to compensate for the deformation mentioned above.
  • the reaction plates 4 and 7 undergo a reaction downwards.
  • the action of the hydraulic compensating cylinders 14, 14 ', 14 is controlled, as is that of the pistons and working rolls 6 and 6' by an electronic control unit (not shown in the drawing). On long presses, the number of reaction holes equipped with compensation rolls is higher.

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

Claims (9)

  1. Verfahren zur Korrektur eines Biegevorgangs in einer Biegepresse (1) derjenigen Art, die eine feste Platte (2), eine bewegbare Platte (5), Einrichtungen (6, 6') zum Verschieben der bewegbaren Platte, die an zwei an der festen Platte (2) befestigten Pfostenplatten (10, 10') angebracht sind, jeweils einer der beiden Pfostenplatten (10, 10') zugeordnete Fühler, mit denen die Kräfte bestimmbar sind, die die Verschiebeeinrichtungen (6, 6') auf die Pfostenplatten (10, 10') ausüben, einer der beiden Platten zugeordnete Gewindespindeln (14, 14', 14") zum Verformungsausgleich sowie eine Steuerelektronik aufweist, die die Bewegung der bewegbaren Platte (5) zwischen einem oberen und einem unteren Totpunkt befiehlt, dadurch gekennzeichnet, dass ein Kalibriereinrichtung im Speicher der Steuerelektronik abgelegt ist, wobei mittels sehr kurzer Abgleichstücke einer Länge von weniger als 10 % des Abstands zwischen zwei Gewindespindeln die Einrichtung eine Beziehung zwischen den von den den Pfostenplatten (10, 10') zugeordneten Fühlern bestimmten Kräften und den Drücken hergestellt ist, die an die Gewindespindeln (14, 14', 14") der Platte legbar sind, um die sie tragende Platte im Wesentlichen gradlinig zu halten, wobei in einer nachfolgenden Biegevorgang an die Gewindespindeln (14, 14', 14") Drücke gelegt werden, die sich aus der Kalibriereinrichtung in Funktion der auf Höhe der Fühler gemessenen Kräfte ergeben.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass eine Korrektur der Eindringtiefe des Stempels in das Gesenk erfolgt, indem man den unteren Totpunkt jeder Pfostenplatte in Funktion der Eigenschaften des zu biegenden Werkstücks und der Werte neu berechnet, die die den Pfostenplatten zugeordneten Fühler messen.
  3. Verfahren nach Anspruch 2 in Anwendung auf ein kurzes Werkstück, dadurch gekennzeichnet, dass eine Korrektur (ΔZ) des unteren Totpunkts nach folgender Formel erfolgt: ΔZ = F . l 2 a . l 2 b / 3. ⁢ E . I . l ,
    Figure imgb0014
    in der
    F = örtliche Last (N) auf dem kurzen Werkstück
    l = Abstand zwischen den Pfostenplatten
    la, lb = Abstände zwischen dem Mittelpunkt des Werkstücks und den Pfostenplatten
    E = Elastizitätsmodul (N/mm2) der oberen Platte
    I = axiales Trägheitsmoment (mm4) der Platte
  4. Verfahren nach Anspruch 2 in Anwendung auf ein langes Werkstück, dadurch gekennzeichnet, dass man auf den Lauf der bewegbaren Platte eine Korrektur ΔZ' des unteren Totpunkts anbringt, die berechnet wird nach der Formel ΔZʹ = 5 ⋅ Q ⋅ I 4 / 384000. ⁢ E . I ,
    Figure imgb0015
     in der
    Q = Belastung pro Längeneinheit (N/m) des Werkstücks
    E = Elastizitätsmodul (N/mm2) der oberen Platte
    I = axiales Trägheitsmoment (mm4) der Platte
  5. Verfahren nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Ist-Länge des Werkstücks bestimmt wird, indem man die von den Kraftfühlern gemessene Kraft mit entsprechenden Daten aus einem Bezugs-Biegevorgang vergleicht.
  6. Verfahren nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass die Korrekturen der unteren Totpunkte der bewegbaren Platte in Funktion der Länge des Werkstücks und der von den genannten Kraftfühlern gemessenen Kräfte vorbestimmt und im Speicher der Steuerelektronik abgelegt werden.
  7. Verfahren nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass nach der Bestimmung der Ist-Dicke des Werkstücks eine ergänzende Korrektur des unteren Totpunkts berechnet wird.
  8. Verfahren nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass eine ergänzende Korrektur des unteren Totpunkts zum Ausgleich des Federungseffekts berechnet wird.
  9. Biegepresse (1) mit einer festen Platte (2), einer bewegbaren Platte (5), Einrichtungen (6, 6') zum Verschieben der bewegbaren Platte, die von zwei an der festen Platte befestigten Pfostenplatten (10, 10') gestützt sind, den beiden Pfostenplatten (10, 10') jeweils zugeordnete Fühler, mit denen die Kräfte messbar sind, die die genannten Verschiebeeinrichtungen (6, 6') auf die Pfostenplatten (10, 10') ausüben, Gewindespindeln (14, 14', 14") zum Ausgleich der Verformungen der unteren Platte (2), sowie eine Steuerelektronik, die die Verschiebungen der bewegbaren Platte (5) zwischen einem oberen und einem unteren Totpunkt befiehlt, dadurch gekennzeichnet, dass die Steuerelektronik für die Ausführung eines Verfahrens nach einem der Ansprüche 1 bis 8 programmiert ist.
EP03405126A 2003-02-26 2003-02-26 Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse Expired - Lifetime EP1452302B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AT03405126T ATE427830T1 (de) 2003-02-26 2003-02-26 Verfahren zur korrigierung eines biegvorgangs und biegepresse
DE60327042T DE60327042D1 (de) 2003-02-26 2003-02-26 Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse
EP03405126A EP1452302B1 (de) 2003-02-26 2003-02-26 Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse
CNA2004800089255A CN1767940A (zh) 2003-02-26 2004-02-19 校正弯折作业的方法和压力弯折机
PCT/CH2004/000090 WO2004076161A1 (fr) 2003-02-26 2004-02-19 Procede de correction d'une operation de pliage et presse-plieuse
US10/546,909 US7503200B2 (en) 2003-02-26 2004-02-19 Method for correcting a folding operation and folding press
CA002516998A CA2516998A1 (en) 2003-02-26 2004-02-19 Method for correcting a folding operation and folding press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405126A EP1452302B1 (de) 2003-02-26 2003-02-26 Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse

Publications (2)

Publication Number Publication Date
EP1452302A1 EP1452302A1 (de) 2004-09-01
EP1452302B1 true EP1452302B1 (de) 2009-04-08

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Family Applications (1)

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EP03405126A Expired - Lifetime EP1452302B1 (de) 2003-02-26 2003-02-26 Verfahren zur Korrigierung eines Biegvorgangs und Biegepresse

Country Status (7)

Country Link
US (1) US7503200B2 (de)
EP (1) EP1452302B1 (de)
CN (1) CN1767940A (de)
AT (1) ATE427830T1 (de)
CA (1) CA2516998A1 (de)
DE (1) DE60327042D1 (de)
WO (1) WO2004076161A1 (de)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2022006613A1 (de) 2020-07-09 2022-01-13 Trumpf Maschinen Austria Gmbh & Co. Kg. Biegevorrichtung mit durchbiegungsausgleich

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AT501264B8 (de) * 2004-09-10 2007-02-15 Trumpf Maschinen Austria Gmbh Verfahren zur herstellung eines werkteils durch biegeumformung
FR2877863B1 (fr) * 2004-11-12 2007-02-09 Kazuhisa Oguchi Presse plieuse a 3 points d'appui
ITMI20062026A1 (it) * 2006-10-23 2008-04-24 Antonio Maria Banfi Procedimento e dispositivo per compensare le deformazioni strutturali di una pressa piegatrice
FR2942983B1 (fr) * 2009-03-13 2011-04-08 Amada Europ Presse plieuse pour le pliage de feuilles
FR2942980B1 (fr) 2009-03-13 2011-04-08 Amada Europ Presse plieuse pour le pliage de feuilles
FR2942981B1 (fr) * 2009-03-13 2011-04-08 Amada Europe Presse plieuse pour le pliage de feuilles
FR2942982B1 (fr) * 2009-03-13 2014-12-05 Amada Europ Presse plieuse pour le pliage de feuilles
GB201114438D0 (en) * 2011-08-22 2011-10-05 Airbus Operations Ltd A method of manufacturing an elongate component
TR201112647A2 (tr) * 2011-12-20 2012-05-21 Durmazlar Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Abkant preslerde sac sehimini engelleyen dinamik bombeleme mekanizması.
ITTV20120125A1 (it) * 2012-07-06 2014-01-07 Gasparini Ind S R L Dispositivo per la bombatura in presse piegatrici.
AT513150B1 (de) * 2012-12-06 2014-02-15 Trumpf Maschinen Austria Gmbh Abkantpresse
JP6257970B2 (ja) * 2013-09-09 2018-01-10 蛇の目ミシン工業株式会社 電動プレス、屈曲点検出方法およびプログラム
JP6257971B2 (ja) * 2013-09-09 2018-01-10 蛇の目ミシン工業株式会社 電動プレス、判断方法およびプログラム
JP2015051453A (ja) * 2013-09-09 2015-03-19 蛇の目ミシン工業株式会社 電動プレス、屈曲点検出方法およびプログラム
DE102013110539B3 (de) * 2013-09-24 2014-11-20 Fette Compacting Gmbh Verfahren zur Herstellung eines Presslings aus pulverförmigem Material
AT515153B1 (de) * 2013-12-04 2015-08-15 Trumpf Maschinen Austria Gmbh Biegemaschine
CN106424229A (zh) * 2016-11-23 2017-02-22 南通新通威机床有限公司 超大型折弯机结构优化及刚度补偿方法
US10369613B2 (en) * 2017-02-06 2019-08-06 GM Global Technology Operations LLC Die assembly for a stamping press
CN106955912A (zh) * 2017-04-28 2017-07-18 上海葛世工业自动化有限公司 自动扰度补偿装置及折弯机
CN106890871B (zh) * 2017-04-28 2019-01-11 山东嘉意机械有限公司 机架变形补偿装置及折弯机
JP6638022B2 (ja) * 2018-05-28 2020-01-29 株式会社アマダホールディングス プレスブレーキ制御装置、プレスブレーキ制御方法、及び金型
CN110961496B (zh) * 2019-11-22 2021-07-20 天水锻压机床(集团)有限公司 基于高精度数控悬臂成型机高硬度板料折弯的智能补偿系统及补偿方法
WO2022146266A1 (en) * 2020-12-31 2022-07-07 Baykal Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ Gas propellant top beam structure in press brakes
EP4074432A1 (de) * 2021-04-15 2022-10-19 Bystronic Laser AG Biegemaschine zur biegung von werkstücken, insbesondere abkantpresse
CN114653790A (zh) * 2022-05-26 2022-06-24 中国二十二冶集团有限公司 直流电弧炉大电流回流母线软连接母排的校正装置

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WO2022006613A1 (de) 2020-07-09 2022-01-13 Trumpf Maschinen Austria Gmbh & Co. Kg. Biegevorrichtung mit durchbiegungsausgleich

Also Published As

Publication number Publication date
CA2516998A1 (en) 2004-09-10
WO2004076161A1 (fr) 2004-09-10
ATE427830T1 (de) 2009-04-15
EP1452302A1 (de) 2004-09-01
US20070033981A1 (en) 2007-02-15
CN1767940A (zh) 2006-05-03
DE60327042D1 (de) 2009-05-20
US7503200B2 (en) 2009-03-17

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