EP 0313565 B1 19900912 - METHOD FOR PRODUCTION OF A CAMSHAFT
Title (en)
METHOD FOR PRODUCTION OF A CAMSHAFT
Publication
Application
Priority
- GB 8617052 A 19860712
- GB 8705385 A 19870307
Abstract (en)
[origin: WO8800643A1] A camshaft for an internal combustion engine is produced as a tubular fabrication by assembling a plurality of initially circular cam rings (12) on a central tubular member (10), deforming the cam rings to a desired cam profile by pressing in die cavities (20-22) of a forming tool and then radially outwardly expanding the tubular member into the shaped cam profile rings by the application of internal fluid pressure to the tubular member (10). The shaped cam rings (12) are thereby secured against rotational and axial movement relative to the tubular member (10). Alternatively, the pressing of the cam rings to a desired cam profile may also deform the tubular member relative to the cam rings to such an extent as to secure them to the tubular member without recourse to the subsequent application of internal fluid pressure to the central tubular member.
IPC 1-7
IPC 8 full level
B21D 39/04 (2006.01); B21D 53/84 (2006.01); B23P 11/00 (2006.01); F01L 1/04 (2006.01); F01L 1/047 (2006.01); F16H 53/02 (2006.01)
CPC (source: EP KR)
B21D 53/84 (2013.01 - EP); B21D 53/845 (2013.01 - EP); F01L 1/04 (2013.01 - KR); F01L 1/047 (2013.01 - EP)
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 8800643 A1 19880128; BR 8707744 A 19890815; CA 1289776 C 19911001; CN 1009570 B 19900912; CN 87104854 A 19880127; EP 0313565 A1 19890503; EP 0313565 B1 19900912; ES 2007075 A6 19890601; GB 2211127 A 19890628; GB 2211127 B 19900131; GB 8828529 D0 19890201; JP H02501323 A 19900510; JP H0524322 B2 19930407; KR 880701813 A 19881105
DOCDB simple family (application)
GB 8700484 W 19870709; BR 8707744 A 19870709; CA 541263 A 19870703; CN 87104854 A 19870711; EP 87904397 A 19870709; ES 8702045 A 19870710; GB 8828529 A 19880709; JP 50404887 A 19870709; KR 880700269 A 19880311