EP 1252946 B1 20060412 - Method for producing rotationally symmetric parts
Title (en)
Method for producing rotationally symmetric parts
Title (de)
Verfahren zum Herstellen von rotationssymmetrischen Bauteilen
Title (fr)
Procédé pour la production des pièces à symétrie de rotation
Publication
Application
Priority
DE 10120392 A 20010425
Abstract (en)
[origin: EP1252946A2] A tube with constant outer diameter and wall thickness is formed into a shaft with esp. smaller diameter and higher wall thickness. A tube with wall thickness corresponding to the smallest wall thickness of the finished part is partially heated, the heated section is axially upset, and radially forged. The tube is a welded not redrawn part. Upsetting and forging take place in a single working stage while a mandrel is inserted into at least a part of the tube.
IPC 8 full level
B21K 1/12 (2006.01); B21C 37/16 (2006.01); B21J 5/08 (2006.01); B21K 1/06 (2006.01); B21K 1/10 (2006.01); B21K 21/12 (2006.01)
CPC (source: EP US)
B21C 37/16 (2013.01 - EP US); B21K 1/12 (2013.01 - EP US); B21K 21/12 (2013.01 - EP US); Y10T 29/49945 (2015.01 - EP US)
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 1252946 A2 20021030; EP 1252946 A3 20031008; EP 1252946 B1 20060412; AT E322949 T1 20060415; DE 10120392 A1 20021031; DE 10120392 B4 20040923; DE 50206354 D1 20060524; JP 2002321035 A 20021105; US 2002160844 A1 20021031; US 7275407 B2 20071002
DOCDB simple family (application)
EP 02002515 A 20020202; AT 02002515 T 20020202; DE 10120392 A 20010425; DE 50206354 T 20020202; JP 2002050004 A 20020226; US 13113802 A 20020425