EP 3953079 B1 20240605 - METHOD FOR PRODUCING A HOLLOW SHAFT
Title (en)
METHOD FOR PRODUCING A HOLLOW SHAFT
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER HOHLWELLE
Title (fr)
PROCÉDÉ DE FABRICATION D'UN ARBRE CREUX
Publication
Application
Priority
- DE 102019109183 A 20190408
- EP 2020059743 W 20200406
Abstract (en)
[origin: WO2020207960A1] The invention relates to a method for producing a hollow shaft from a tubular preform by means of pressure rolling, wherein each end of the preform is shaped using at least one forming roller, a tubular preform (1) with a round or polygonal cross-section is used, and the preform (1) is held on a workpiece holder (2) in the central tube region (1a) during the entire production process until the hollow shaft is completed.
IPC 8 full level
B21D 22/14 (2006.01); B21D 41/04 (2006.01); B21H 5/00 (2006.01); B21K 1/06 (2006.01)
CPC (source: CN EP US)
B21D 22/14 (2013.01 - EP); B21D 22/16 (2013.01 - CN US); B21D 41/04 (2013.01 - CN EP US); B21H 1/18 (2013.01 - US); B21H 5/02 (2013.01 - EP); B21J 5/12 (2013.01 - EP); B21K 1/063 (2013.01 - EP US); B21K 1/066 (2013.01 - EP); B21D 22/16 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102019109183 A1 20201008; CN 111790801 A 20201020; EP 3953079 A1 20220216; EP 3953079 B1 20240605; JP 2022527535 A 20220602; US 2022219218 A1 20220714; WO 2020207960 A1 20201015
DOCDB simple family (application)
DE 102019109183 A 20190408; CN 201910436775 A 20190524; EP 2020059743 W 20200406; EP 20717631 A 20200406; JP 2021558947 A 20200406; US 202017600238 A 20200406