Method for manufacturing a hollow camshaft having oil-feeding ho

Details Method for manufacturing a hollow camshaft having oil-feeding ho Method for manufacturing a hollow camshaft having oil-feeding ho

1993-12-17

1995-09-19

Vo, Peter Dungba

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

295276, 164132, B22D 2900, B22D 1500, B21K 106

Patent

active

054506654

ABSTRACT:
A hollow camshaft for automotive engines, which is made of cast iron, and which has at least one as-cast oil-feeding hole on the chilled faces of cam members is disclosed. When a camshaft is cast, thin carbon rod cores are used as cores which are enveloped in casting. After removing the carbon rods by burning them, small as cast oil-feeding holes are left in cam members.

REFERENCES:
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patent: 4829642 (1989-05-01), Thomas et al.
patent: 4832107 (1989-05-01), Hass et al.
patent: 5072773 (1991-12-01), Ruff et al.
patent: 5122204 (1992-06-01), McDonald
Patent Abstracts of Japan, vol. 6, No. 167 (M-153), JP57081950, May 22, 1982, N. Takeshi, et al., "Manufacture of Cam Shaft".
Patent Abstracts of Japan, vol. 10, No. 21 (M-449) [2078], JP-60-179569, Jan. 28, 1986, S. Oosaki, et al., "Manufacturing Method of Cam Shaft".

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