Method of manufacturing a camshaft

Details Method of manufacturing a camshaft Method of manufacturing a camshaft

1989-11-22

1990-08-14

Echols, P. W.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

29525, 74567, B23P 1500

Patent

active

049475479

ABSTRACT:
A camshaft for controlling valves in internal combustion engines includes a shaft and at least one cam slid onto and connected to the shaft. The cam has a recess for receiving the shaft. The recess has at least one radially inwardly directed projection which engages a corresponding groove in the shaft. At least one portion of the area of the shaft in which the cam is to be provided has a diameter which is greater than the remaining areas of the shaft. The increased diameter portion of the shaft is a bead-like material displacement which extends circumferentially on the shaft and is manufactured by rolling. The cam is forced onto the increased diameter portion of the shaft with a projection in the recess of the cam forming in a chip-removing operation a groove in the increased diameter portion.

REFERENCES:
patent: 4612695 (1986-09-01), Umeha et al.
patent: 4616389 (1986-10-01), Slee
patent: 4620454 (1986-11-01), Sugiuchi et al.
patent: 4660269 (1987-04-01), Suzuki
patent: 4693138 (1987-09-01), Hughes et al.
patent: 4708029 (1987-11-01), Urano
patent: 4763614 (1988-08-01), di Aragona
patent: 4774852 (1988-10-01), Matt
patent: 4781075 (1988-11-01), Yamaji et al.
patent: 4781076 (1988-11-01), Hartnette et al.

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