Process for producing a camshaft

Details Process for producing a camshaft Process for producing a camshaft

1990-01-29

1991-08-20

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

29 601, 2988808, 2988809, 72 76, 72367, 72371, 72402, B23C 308

Patent

active

050402943

ABSTRACT:
In a process for producing a camshaft provided with bearings and cams from a pipe or from a blank having an initial oval cam shape, the configuration of the camshaft with the cams and the bearings is molded into the pipe or hollow blank by swaging and circular kneading with tool segments. In a first step, a cam shape blank (9) is brought in the area of the bearings (13) to an at least approximately circular shape by forging or hammering of the camshaft in a pre-formation. Then in a second step the configuration of the camshaft with cams (16) and bearings (13) is molded by hammering a circular kneading with tools elements that at least partly surround the blank and exert radial compressive forces thereon while changing its initial shape and oval cross section.

REFERENCES:
patent: 2472261 (1949-06-01), Mueller
patent: 2653373 (1953-09-01), Brauchler
patent: 2892254 (1959-06-01), Garvin
patent: 4269551 (1981-05-01), Kralowetz
patent: 4416130 (1983-11-01), Judge, Jr.
patent: 4464917 (1984-08-01), Kienhofer
patent: 4612695 (1986-09-01), Umeha et al.
patent: 4763503 (1988-08-01), Hughes et al.
"Rotary Swaging of Bars and Tubes" vol. 4, Metals Handbook, American Society for Metals, pp. 333-346, 1969.

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