Method of making a powdered metal camshaft assembly

Details Method of making a powdered metal camshaft assembly Method of making a powdered metal camshaft assembly

1993-12-30

1995-11-07

Vo, Peter

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

2988808, 29DIG31, 74567, B23P 1904, B21K 108, B22F 706

Patent

active

054638097

ABSTRACT:
A camshaft assembly comprising a shaft, a lobe, a gear, and a boss portion is disclosed. The lobe includes a first powdered metal and has a first density, while the gear includes a second powdered metal and has a second density. The boss portion is formed on one of the lobe or gear, and has an aperture sized to cooperate with the shaft and a periphery cooperating with the other of the lobe or gear to fix the lobe against rotation relative to the gear. The boss portion has a third density less than the density of the lobe or gear on which the boss portion is formed. A method of making a camshaft component is also disclosed.

REFERENCES:
patent: 1939468 (1933-12-01), Simons
patent: 3729971 (1973-05-01), Gurganus et al.
patent: 3962772 (1976-06-01), Haller
patent: 3999277 (1976-12-01), Hamada
patent: 4595556 (1986-06-01), Umeha et al.
patent: 4616389 (1986-10-01), Slee
patent: 4969262 (1990-11-01), Hiraoka et al.
"Powder Metallurgy Design Manual" Metal Powder Industries Federation, Princeton, N.J., 1989, pp. 1-6, 34 41 & 73.

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