EP 0523215 B1 19970903 - PROCESS FOR THE HYDROSTATIC SHAPING OF HOLLOW BODIES OF COLD-WORKABLE METAL AND DEVICE FOR IMPLEMENTING IT
Title (en)
PROCESS FOR THE HYDROSTATIC SHAPING OF HOLLOW BODIES OF COLD-WORKABLE METAL AND DEVICE FOR IMPLEMENTING IT
Title (de)
VERFAHREN ZUM HYDROSTATISCHEN UMFORMEN VON HOHLKÖRPERN AUS KALTUMFORMBAREM METALL UND VORRICHTUNG ZUR DURCHFÜHRUNG DES VERFAHRENS
Title (fr)
PROCEDE ET DISPOSITIF DE FORMAGE HYDROSTATIQUE DE CORPS CREUX EN METAL DEFORMABLE A FROID
Publication
Application
Priority
- DE 9200060 W 19920131
- DE 4103082 A 19910201
Abstract (en)
[origin: WO9213653A1] In a process for the hydrostatic shaping of hollow bodies (21) of cold-workable metal and in a device for implementing the process, pressurised liquid is fed from outside into the hollow body (21) inside a shaping chamber (17) of a swage (16). Thus the wall of the hollow body (21) in a shaping region is pressed against the engraving (20) of the shaping chamber (17) under relative movement. The hollow body (21) is held outside the shaping region in at least one securing region (26). An embodiment of the process facilitates a wide range of shaping even in thin-walled hollow bodies (21) in that the hollow body (21) is kept floating with substantially no axial force in each securing region (26) and the wall of said body is moved in relation to the swage (16) and especially drawn into it only by the pressurised liquid.
IPC 1-7
IPC 8 full level
B21C 37/28 (2006.01); B21D 26/02 (2011.01); B21D 26/033 (2011.01); B21D 26/045 (2011.01)
CPC (source: EP US)
B21C 37/283 (2013.01 - EP US); B21D 26/033 (2013.01 - EP US); B21D 26/045 (2013.01 - EP US); Y10T 29/49805 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9213653 A1 19920820; AT E157571 T1 19970915; BR 9204114 A 19930608; DE 4103082 A1 19920827; DE 4103082 C2 19930916; DE 59208844 D1 19971009; DK 0523215 T3 19971201; EP 0523215 A1 19930120; EP 0523215 B1 19970903; ES 2109339 T3 19980116; JP 2542320 B2 19961009; JP H05504725 A 19930722; US 5303570 A 19940419
DOCDB simple family (application)
DE 9200060 W 19920131; AT 92903582 T 19920131; BR 9204114 A 19920131; DE 4103082 A 19910201; DE 59208844 T 19920131; DK 92903582 T 19920131; EP 92903582 A 19920131; ES 92903582 T 19920131; JP 50345792 A 19920131; US 92739892 A 19920923