EP 2511020 A3 20121114 - Method for bending metal material, bending machine, bending-equipment line, and bent product
Title (en)
Method for bending metal material, bending machine, bending-equipment line, and bent product
Title (de)
Verfahren zum Biegen von Metallmaterial, Biegemaschine, Biegeausrüstungsstrang und gebogenes Produkt
Title (fr)
Procédé de cintrage d'un matériau métallique, machine de cintrage, équipement de ligne de cintrage et produit plié
Publication
Application
Priority
- EP 06714360 A 20060223
- JP 2005059571 A 20050303
- JP 2005242441 A 20050824
Abstract (en)
[origin: EP1857195A1] The invention provides: a method for bending a workpiece in which, in a bending process, while successively or continuously feeding the workpiece held by a supporting unit from an upstream side of the supporting unit, bending is performed at a downstream side of the supporting unit; a bending machine; and a bending-equipment line. The bending method includes: supporting the metal material with a movable roller die; controlling the position of the movable roller die and/or the moving speed of the metal material; heating the metal material in a temperature range in which the heated portion can be plastically deformed and in a temperature range in which quenching can be performed, by using a heating unit that is provided around the outer circumference of the metal material, to apply a bending moment to the heated portion; and rapidly cooling the heated portion, by using a cooling unit that is provided around the outer circumference of the metal material. According to the present invention, even in a two-dimensional or three-dimensional continuous bending operation in which the metal material is two-dimensionally or three-dimensionally bent in different directions, and even when a high-strength metal material is bent, it is possible to effectively obtain a metal material having excellent shape fixability and uniform hardness distribution at low costs. Therefore, the bending method of the invention can be widely applied as an art for bending sophisticated automobile parts.
IPC 8 full level
B21D 7/08 (2006.01); B21D 7/16 (2006.01); B21D 11/14 (2006.01)
CPC (source: EP KR US)
B21D 7/08 (2013.01 - EP KR US); Y10T 428/12292 (2015.01 - EP US)
Citation (search report)
- [X] JP H05302119 A 19931116 - SUMITOMO METAL IND
- [X] US 2003038489 A1 20030227 - RENZZULLA EDWARD [US], et al
- [Y] US 4061005 A 19771206 - KAWANAMI SHUNPEI, et al
- [Y] GB 754907 A 19560815 - ANDRE HUET
- [A] DE 3523025 A1 19870102 - SIEMENS AG [DE]
- [A] JP H10140251 A 19980526 - SUMITOMO METAL IND
- [A] JP H04105716 A 19920407 - DAI ICHI HIGH FREQUENCY CO LTD
- [A] JP H06182453 A 19940705 - MAZDA MOTOR
- [A] JP S5059264 A 19750522
- [A] US 4195506 A 19800401 - HANYO SUSUMU [JP], et al
- [A] JP H05212450 A 19930824 - HASHIMOTO FORMING KOGYO CO
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1857195 A1 20071121; EP 1857195 A4 20110504; EP 1857195 B1 20140430; EP 1857195 B8 20140730; CN 101132869 A 20080227; CN 101132869 B 20121010; EP 2511020 A2 20121017; EP 2511020 A3 20121114; KR 100878647 B1 20090115; KR 20070102594 A 20071018; US 2008066517 A1 20080320; WO 2006093006 A1 20060908
DOCDB simple family (application)
EP 06714360 A 20060223; CN 200680006967 A 20060223; EP 12174983 A 20060223; JP 2006303220 W 20060223; KR 20077020144 A 20070903; US 89631907 A 20070831