EP0341211A3 - Method of bending sheet metal - Google Patents

Method of bending sheet metal Download PDF

Info

Publication number
EP0341211A3
EP0341211A3 EP19890810322 EP89810322A EP0341211A3 EP 0341211 A3 EP0341211 A3 EP 0341211A3 EP 19890810322 EP19890810322 EP 19890810322 EP 89810322 A EP89810322 A EP 89810322A EP 0341211 A3 EP0341211 A3 EP 0341211A3
Authority
EP
European Patent Office
Prior art keywords
bending
sheet metal
bending sheet
actual
characteristic
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
EP19890810322
Other languages
German (de)
Other versions
EP0341211A2 (en
EP0341211B1 (en
Inventor
Vaclav Zbornik
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.)
Haemmerle AG Maschinenfabrik
Original Assignee
Haemmerle AG Maschinenfabrik
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 Haemmerle AG Maschinenfabrik filed Critical Haemmerle AG Maschinenfabrik
Publication of EP0341211A2 publication Critical patent/EP0341211A2/en
Publication of EP0341211A3 publication Critical patent/EP0341211A3/en
Application granted granted Critical
Publication of EP0341211B1 publication Critical patent/EP0341211B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

For the purpose of bending pieces of sheet metal with the aid of a bending device which has a bending punch (1) and a die (2) with an adjustable plug (3), the actual bending characteristic (8) of a sample piece of sheet metal of the same thickness and the same quality of material is first of all determined and stored as a reference curve (8). In the course of the bending operation, the actual bending characteristic (9) is recorded and compared to the corresponding stored value. The position of the bottom plug (3) is then corrected on the basis of the difference established. <IMAGE>
EP89810322A 1988-05-03 1989-04-28 Method of bending sheet metal Expired - Lifetime EP0341211B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0114088A AT389829B (en) 1988-05-03 1988-05-03 METHOD FOR BENDING SHEET PIECES WITH THE AID OF A BENDING DEVICE
AT1140/88 1988-05-03

Publications (3)

Publication Number Publication Date
EP0341211A2 EP0341211A2 (en) 1989-11-08
EP0341211A3 true EP0341211A3 (en) 1990-10-24
EP0341211B1 EP0341211B1 (en) 1993-04-14

Family

ID=3507465

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810322A Expired - Lifetime EP0341211B1 (en) 1988-05-03 1989-04-28 Method of bending sheet metal

Country Status (6)

Country Link
US (1) US4962654A (en)
EP (1) EP0341211B1 (en)
JP (1) JP2556994B2 (en)
AT (2) AT389829B (en)
DE (1) DE58904039D1 (en)
ES (1) ES2039935T3 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5148693A (en) * 1989-11-14 1992-09-22 Amada Company, Limited Method and a device for detecting folding angles of a metal sheet during the folding and a method for folding of a metal sheet
SE505985C2 (en) * 1989-11-14 1997-10-27 Amada Co Ltd Method and apparatus for sensing bending angles of a metal sheet during bending
EP0459224B1 (en) * 1990-05-31 1995-08-16 Siemens Aktiengesellschaft Operation method of a press
BE1007424A5 (en) * 1993-08-27 1995-06-13 Lvd Co Adaptive bending.
US5572896A (en) * 1994-02-25 1996-11-12 Aluminum Company Of America Strain path control in forming processes
US5835684A (en) * 1994-11-09 1998-11-10 Amada Company, Ltd. Method for planning/controlling robot motion
US5761940A (en) 1994-11-09 1998-06-09 Amada Company, Ltd. Methods and apparatuses for backgaging and sensor-based control of bending operations
EP1236546A3 (en) * 1994-11-09 2002-12-11 Amada Company, Ltd. Gripper movement control method and apparatus
US5969973A (en) * 1994-11-09 1999-10-19 Amada Company, Ltd. Intelligent system for generating and executing a sheet metal bending plan
WO1996015481A2 (en) 1994-11-09 1996-05-23 Amada Company, Limited Intelligent system for generating and executing a sheet metal bending plan
US5729462A (en) * 1995-08-25 1998-03-17 Northrop Grumman Corporation Method and apparatus for constructing a complex tool surface for use in an age forming process
IT1311827B1 (en) * 1999-04-16 2002-03-19 Luciano Gasparini SELF-CENTERING TILTING FORK OF THE FORK, PARTICULARLY FOR MEASURING ON FOUR POINTS OF THE
US7089802B2 (en) * 2003-09-05 2006-08-15 The Boeing Company Method and apparatus for determining hydrogen embrittlement
US7330338B1 (en) 2004-05-05 2008-02-12 Hutchinson Technology Incorporated Method for adjusting pitch and roll in a head suspension
DE102005012384A1 (en) 2005-03-17 2006-07-13 Siemens Ag Free bending of workpiece such as sheet useful in sheet bending operations involves construction of bending and correction curves and application of the corrections to further bending
DE102006014093A1 (en) * 2006-03-24 2007-09-27 Kleiner, Matthias, Prof. Dr.-Ing. Bending flat metallic workpieces, especially steel plates, involves applying compression to compensate stresses in deformation zone and incremental superimposition of traction stresses with compression acting along bend line
EP1961502B1 (en) 2007-02-23 2014-10-22 Bystronic Laser AG Method and device for bending workpieces
ES2362764B1 (en) * 2009-10-05 2012-03-06 Abengoa Solar New Technologies, S.A VACUUM INDICATOR SUPPORT SYSTEM OR EVAPORABLE GETTER.
DE102010009811B4 (en) * 2010-03-02 2013-05-16 Mtu Aero Engines Gmbh Bending device for bending a blade of a blade ring
CN103264078B (en) * 2013-05-06 2016-04-27 上海飞机制造有限公司 A kind of numerical control gate pressure processing method considering springback compensation
DE102017006218A1 (en) 2017-06-28 2019-01-03 Technische Universität Dortmund Apparatus and method for bending sheet-like workpieces with simultaneous pressure stress superposition
EP3511085B1 (en) * 2018-01-16 2024-08-14 Outokumpu Oyj Bend-formed load-bearing structure of a passenger car
CN110026484B (en) * 2019-04-29 2020-10-09 中电建武汉铁塔有限公司 Opening and closing angle die
FR3139017B1 (en) 2022-08-26 2024-07-26 Axone Ind Device for bending thick plates up to 100 mm wide to obtain a closed angle of 30° and a very small radius of curvature

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096278A2 (en) * 1982-06-07 1983-12-21 Hämmerle AG Method of binding plate, and apparatus for doing so
AT381251B (en) * 1984-10-18 1986-09-25 Haemmerle Ag METHOD FOR CORRECTING THE BENDING ANGLE WHEN BENDING WITH A BENDING STAMP

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552182A (en) * 1968-11-20 1971-01-05 Wisconsin Machine Corp Press brake with hydraulic ram adjustment
JPS5311273B2 (en) * 1973-12-27 1978-04-20
US3978706A (en) * 1974-12-24 1976-09-07 Nippon Kokan Kabushiki Kaisha Precision bending work method for metallic materials
NL179349C (en) * 1975-06-24 Haemmerle Ag Maschf BENDING TOOL.
IT1072273B (en) * 1977-02-01 1985-04-10 Selecontrol Sas DEVICE FOR THE DETECTION AND ADJUSTMENT OF BENDING ANGLES PARTICULARLY SUITABLE FOR PRESSES-FOLDERS
DE2952108C2 (en) * 1979-12-22 1983-11-24 Hämmerle AG, Zofingen Arrangement for height adjustment of the die base of bending tools for bending sheet metal
EP0166351A3 (en) * 1984-06-27 1986-09-17 Arnold Stucki Device at a machine for deformation work of sheet metals
US4819467A (en) * 1986-09-17 1989-04-11 Cincinnati Incorporated Adaptive control system for hydraulic press brake
US4802357A (en) * 1987-05-28 1989-02-07 The Boeing Company Apparatus and method of compensating for springback in a workpiece

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096278A2 (en) * 1982-06-07 1983-12-21 Hämmerle AG Method of binding plate, and apparatus for doing so
AT381251B (en) * 1984-10-18 1986-09-25 Haemmerle Ag METHOD FOR CORRECTING THE BENDING ANGLE WHEN BENDING WITH A BENDING STAMP

Also Published As

Publication number Publication date
ATA114088A (en) 1989-07-15
ES2039935T3 (en) 1993-10-01
EP0341211A2 (en) 1989-11-08
JPH02142620A (en) 1990-05-31
JP2556994B2 (en) 1996-11-27
EP0341211B1 (en) 1993-04-14
US4962654A (en) 1990-10-16
ATE88117T1 (en) 1993-04-15
AT389829B (en) 1990-02-12
DE58904039D1 (en) 1993-05-19

Similar Documents

Publication Publication Date Title
EP0341211A3 (en) Method of bending sheet metal
CA2145715A1 (en) Method and Apparatus for Optimizing Press Operating Condition Based on Press Operating Environment and/or Physical Condition of Blank
SE7902869L (en) SET AND APPARATUS FOR ADJUSTING THE SLOW LENGTH FOR A STAMP WHEN PRESSING
ES8402184A1 (en) Method for the local deforming of round tubes into tubes with flat sides, and die for doing the same.
AU502551B2 (en) Workpiece transfer mechanism in metal stamping press
IT1292259B1 (en) BENDING PRESS FOR SHEETS.
DK0530956T3 (en) Tool and method for forming sheet metal
EP0436792A3 (en) Press for making dimensionally stable pressed articles from particulate material
DE3273309D1 (en) Toggle press
AU546944B2 (en) Method for bending sheets and device for implementing the method
JPS521671A (en) Guide device for a press machine
JPS5614030A (en) Hemming apparatus
ES475932A1 (en) Apparatus for fitting an extrusion die holder onto the press stem of an indirect metal extrusion press
JPS5650733A (en) Lower die clamping device in rorging press
ATE69989T1 (en) FILM REMOVAL DEVICE WITH A SLIDING PRESSURE ELEMENT.
ES8406245A1 (en) Centering and grasping device
JPS55139127A (en) Flare drawing rpocessing method for plastic plate
JPS551210A (en) Fitting jig of mold to plate glass
JPS53142968A (en) Blanking method for pole-plate of battery
JPS51138984A (en) A metal mold holder for a punch press
GB2019993A (en) Device for limiting gas flow in a gas lighter
DE69725413D1 (en) Device for bending thin sheets, in particular for producing sliding closures for computer disks
JPS5669112A (en) Simple pressing method
MY101355A (en) Press forming sheet metal
JPS521673A (en) Guide device in press machine,etc.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19901122

17Q First examination report despatched

Effective date: 19920120

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 88117

Country of ref document: AT

Date of ref document: 19930415

Kind code of ref document: T

REF Corresponds to:

Ref document number: 58904039

Country of ref document: DE

Date of ref document: 19930519

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930426

ET Fr: translation filed
ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2039935

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89810322.1

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19960311

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960318

Year of fee payment: 8

Ref country code: SE

Payment date: 19960318

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19960319

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19960322

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19960402

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19960411

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19970429

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970429

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970430

Ref country code: BE

Effective date: 19970430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19970430

BERE Be: lapsed

Owner name: HAEMMERLE A.G.

Effective date: 19970430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19971101

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971231

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19971101

EUG Se: european patent has lapsed

Ref document number: 89810322.1

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990405

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20050308

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050428

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060428

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080320

Year of fee payment: 20