EP 0677342 A3 19960117 - Method of and device for bending hollow section work pieces.
Title (en)
Method of and device for bending hollow section work pieces.
Title (de)
Verfahren und Vorrichtung zum Biegen von Hohlprofil-Werkstücken.
Title (fr)
Procédé et dispositif pour cintrer des pièces à usiner à profil creux.
Publication
Application
Priority
AT 74794 A 19940412
Abstract (en)
[origin: EP0677342A2] Tubular components are subjected to a forming process to produce curved lengths. The tube can be circular, elliptical or other cross-sectional shape. The required shape of the curve is provided a two part forming die (11). The initially straight tube (13) is inserted into the die and is held between sealing units (14, 15). Pressurised fluid is introduced (21) from a programmably controlled supply system. The tube is forced to adopt the curved shape with guide elements in the die (19) maintaining position. The forming pressure and fluid pressure is accurately controlled. <IMAGE>
IPC 1-7
IPC 8 full level
B21D 9/03 (2006.01)
CPC (source: EP)
B21D 9/03 (2013.01)
Citation (search report)
- [A] EP 0432347 A1 19910619 - ASAHI KINZOKU KOGYOSHO KK [JP]
- [A] DE 2008917 A1 19710916
- [A] CH 373340 A 19631130 - ARMSTRONG DAVID ERHMON [US], et al
- [A] DE 2358756 A1 19750320 - IND MECCANICA BREVETTI PEDRAZZ
Designated contracting state (EPC)
AT BE DE FR IT NL
DOCDB simple family (publication)
EP 0677342 A2 19951018; EP 0677342 A3 19960117; EP 0677342 B1 19980923; AT 402479 B 19970526; AT A74794 A 19961015; AT E171404 T1 19981015; DE 59503656 D1 19981029
DOCDB simple family (application)
EP 95890082 A 19950410; AT 74794 A 19940412; AT 95890082 T 19950410; DE 59503656 T 19950410