EP 1103317 A3 20020206 - Method and apparatus for punching aluminium sheet metal parts
Title (en)
Method and apparatus for punching aluminium sheet metal parts
Title (de)
Verfahren und Vorrichtung zum Lochen von Blechformteilen aus einem Aluminiumwerkstoff
Title (fr)
Procédé et dispositif de poinçonnage des pièces en tôle d' aluminium
Publication
Application
Priority
DE 19957076 A 19991126
Abstract (en)
[origin: EP1103317A2] The hole forming process involves producing a thickening (7) along the hole circumference by a preliminary deformation. The aluminum sheet component (3) is deformed between a holding-down device (1) and a die (2) When the component is deformed by a punch (5), material is forces out of the hole region into the die.
IPC 1-7
IPC 8 full level
B21D 28/24 (2006.01)
CPC (source: EP)
B21D 28/24 (2013.01)
Citation (search report)
[X] PATENT ABSTRACTS OF JAPAN vol. 002, no. 138 (M - 040) 16 November 1978 (1978-11-16)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1103317 A2 20010530; EP 1103317 A3 20020206; EP 1103317 B1 20060118; DE 19957076 A1 20010607; DE 19957076 B4 20061019; DE 50012075 D1 20060406; ES 2257256 T3 20060801; PT 1103317 E 20060531
DOCDB simple family (application)
EP 00125744 A 20001124; DE 19957076 A 19991126; DE 50012075 T 20001124; ES 00125744 T 20001124; PT 00125744 T 20001124