Process for producing built-up camshafts
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United States of America Patent
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Apr 28, 1987
Grant Date -
N/A
app pub date -
May 12, 1986
filing date -
May 21, 1985
priority date (Note) -
Expired
status (Latency Note)
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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.
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