EP 0163769 A3 19860820 - A METHOD AND A MACHINE FOR PRODUCING A METALLIC RING WITH SPECIALLY CONTOURED SURFACES FROM A RING-SHAPED BLANK OF SELECTED CROSS-SECTION
Title (en)
A METHOD AND A MACHINE FOR PRODUCING A METALLIC RING WITH SPECIALLY CONTOURED SURFACES FROM A RING-SHAPED BLANK OF SELECTED CROSS-SECTION
Publication
Application
Priority
IL 7202584 A 19840605
Abstract (en)
[origin: EP0163769A2] Manufacture of rings that are contoured on the edge surface and/or the faces. A blank is formed by bending a rod into annular shape and welding the edges together. This blank is then placed into a stamp-type machine wherein the blank is deformed into a ring with the desired contours, the degree of deformation being at least 10%. The invention also provides a tamp-tpye machine for making these rings.
IPC 1-7
IPC 8 full level
B21D 7/00 (2006.01); B21D 53/16 (2006.01); B21J 5/02 (2006.01); B21K 1/30 (2006.01); B21K 1/76 (2006.01)
CPC (source: EP)
B21J 5/02 (2013.01); B21K 1/30 (2013.01); B21K 1/761 (2013.01)
Citation (search report)
- [X] GB 829107 A 19600224 - CHRISTIAN SCHONDELMAIER
- [X] DE 3030247 C1 19811217 - SKF KUGELLAGERFABRIKEN GMBH
- [A] DE 1261735 B 19680222 - UNTERSTUETZUNGSKASSE DER LANDS
- [A] US 1377266 A 19210510 - FRANK MOSSBERG
Designated contracting state (EPC)
AT BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0163769 A2 19851211; EP 0163769 A3 19860820; IL 72025 A0 19841031; IL 72025 A 19860831; JP S6117336 A 19860125
DOCDB simple family (application)
EP 84115206 A 19841212; IL 7202584 A 19840605; JP 26727884 A 19841218