Process for producing built-up camshafts

Details Process for producing built-up camshafts Process for producing built-up camshafts

1986-05-12

1987-04-28

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Assembling or joining

29421R, 72 61, 72 62, 74567, B21D 3900, B21D 2210, B23P 1700, F16H 5300

Patent

active

046602690

ABSTRACT:
A built-up camshaft is fabricated by fitting cam disks on a hollow shaft, fitting shaft end caps over the ends of the hollow shaft, placing the resulting structure in a die, compressing the hollow shaft in the axial direction thereof inwardly from the opposite ends thereof thereby to carry out swaging tube expansion thereof to place all parts in a temporarily fixed state, and introducing a fluid under pressure into the hollow shaft thereby to carry out bulging and expansion of diameter at specific parts of the hollow shaft and obtain an integral built-up camshaft.

REFERENCES:
patent: 3911549 (1975-10-01), Herr
patent: 4265388 (1981-05-01), Takahashi et al.
patent: 4293995 (1981-10-01), Jordan
patent: 4597365 (1986-07-01), Madaffer
patent: 4612695 (1986-09-01), Umeha et al.
patent: 4620454 (1986-11-01), Sugiuchi et al.

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