ROTATING ASSEMBLY AND ITS MANUFACTURING METHOD
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United States of America Patent
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app pub date -
Apr 10, 2014
filing date -
Jan 20, 2005
priority date (Note) -
Abandoned
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Abstract
An inner hole to which a driving shaft is inserted is formed in a cam piece of a camshaft, and a plurality of grooves extending in the insertion direction of the driving shaft are formed in the inner hole. The driving shaft is inserted into the inner hole with the cam piece heated to expand the diameter of the inner hole. By reducing again the diameter of the inner hole by cooling it in this state, an outer circumferential surface of the driving shaft is pressed and raised by the inner hole and enters the groove, by which the cam piece is firmly fixed onto the driving shaft.
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