F - Mech Eng,Light,Heat,Weapons – 01 – L
Patent
F - Mech Eng,Light,Heat,Weapons
01
L
26/180, 74/282
F01L 1/04 (2006.01) B21D 53/84 (2006.01) B23P 11/00 (2006.01) F01L 1/047 (2006.01) F16H 53/02 (2006.01)
Patent
CA 1289776
ABSTRACT 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.
541263
Dawson Ronald John
Suter Geoffrey Michael
Emitec Gesellschaft Fur Emissionstechnologie Mbh
Ridout & Maybee Llp
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