EP 0613740 B1 19970910 - Process and hydraulic press for the pressing of sheets
Title (en)
Process and hydraulic press for the pressing of sheets
Title (de)
Verfahren und hydraulische Presse zum Pressen von Blechen
Title (fr)
Procédé et presse hydraulique pour le pressage de tÔles
Publication
Application
Priority
IT TO930148 A 19930302
Abstract (en)
[origin: EP0613740A1] Process for the pressing of metal sheets which provides for the use of a hydraulic press whose blank holder is controlled so as to exert on the sheet in the pressing phase a restraining pressure which is alternately variable, with a pre-determined frequency, between zero and a pre-determined maximum, the value of the maximum pressure and the frequency depending on the properties of the sheet to be pressed. <IMAGE>
IPC 1-7
IPC 8 full level
B21D 22/26 (2006.01); B21D 24/08 (2006.01); B21D 24/14 (2006.01)
CPC (source: EP)
B21D 22/26 (2013.01); B21D 24/08 (2013.01); B21D 24/14 (2013.01)
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
EP 0613740 A1 19940907; EP 0613740 B1 19970910; DE 69405426 D1 19971016; DE 69405426 T2 19980212; ES 2105375 T3 19971016; IT 1260615 B 19960422; IT TO930148 A0 19930302; IT TO930148 A1 19940902; JP H0747432 A 19950221
DOCDB simple family (application)
EP 94103041 A 19940301; DE 69405426 T 19940301; ES 94103041 T 19940301; IT TO930148 A 19930302; JP 3222994 A 19940302