EP 0897767 A1 19990224 - Vehicle steering rack and method of manufacturing the rack
Title (en)
Vehicle steering rack and method of manufacturing the rack
Title (de)
Zahnstange und Verfahren zu seiner Herstellung
Title (fr)
Crémaillère et procédé pour sa fabrication
Publication
Application
Priority
US 91858197 A 19970819
Abstract (en)
A steering rack (10) is manufactured in a method including an extruding step, a swaging step and a broaching step. The extruding step forms a continuous body of extruded material in the configuration of an elongated cylindrical tube (12) with a first uniform thickness (T1). The swaging step forms a flattened portion (40) of the tube (12) with a second uniform thickness (T2) substantially equal to the first uniform thickness (T1). The flattened portion (40) of the tube (12) has a flattened outer surface (52). The broaching step forms the rack teeth (60) in a row extending along the flattened portion (40) of the tube (12) by cutting away material at locations that are spaced apart along the flattened outer surface (52). <IMAGE>
IPC 1-7
IPC 8 full level
B23F 1/08 (2006.01); B21D 53/88 (2006.01); B21K 1/76 (2006.01); B62D 3/12 (2006.01)
CPC (source: EP)
B21K 1/767 (2013.01); B21K 1/768 (2013.01)
Citation (search report)
- [X] US 4573399 A 19860304 - WILSON ALAN G [GB]
- [A] EP 0445470 A2 19910911 - SIMON JOSEPH A [US]
- [A] GB 2061138 A 19810513 - CAM GEARS LTD
- [A] GB 2035507 A 19800618 - CAM GEARS LTD
- [A] PATENT ABSTRACTS OF JAPAN vol. 007, no. 230 (M - 249) 12 October 1983 (1983-10-12)
Designated contracting state (EPC)
DE ES GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98115420 A 19980817; JP 23192598 A 19980818