Single piece cam method for the production thereof and assembly of a camshaft
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United States of America Patent
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Issued Date -
May 19, 2005
app pub date -
Sep 15, 2004
filing date -
Apr 29, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In order to significantly reduce the weight of a single-piece cam (2) of a built camshaft, the cam (2), seen from the semi-cross-sectional point of view, comprises a T-shaped cross section having a narrow bridge (4) that extends towards the center thereof and a wraparound top (5) which protrudes by approximately the same distance on both sides and has an approximately constant cross section. The inventive cam (2) is preferably produced by hot forging or cold forging a semifinished pipe or round plate. Preferably, a camshaft comprising a shaft and at least one cam (2) is assembled by providing the support axle with an enlargement in the joining area by means of rolls, rollers, or knurls, said enlargement being greater than the inner diameter of the cam (2), and by inserting the cam (2), resulting in a positive and/or non-positive connection between the support axle and the cam (2).
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