Method for manufacturing a hollow camshaft having oil-feeding holes on its chilled face
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United States of America Patent
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-
Sep 19, 1995
Grant Date -
N/A
app pub date -
Dec 17, 1993
filing date -
Dec 18, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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