Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
1995-03-03
1997-02-04
Cuda, Irene
Metal working
Method of mechanical manufacture
Prime mover or fluid pump making
74567, B23P 1500
Patent
active
055986315
ABSTRACT:
A machine element has a shaft and at least a fitting member such as a cam or gear mounted on the shaft by pressure-fit. The fitting member has a bore for receiving the shaft. The shaft is formed with protrusions at least an area of the shaft on which the fitting member is fitted. The protrusions preferably extend continuously or discretely, peripherally or helically on the outer surface of the shaft and have a diameter larger than than the remaining areas of the shaft. The bore of the fitting member is formed with at least an inner chordal surface having a perpendicular from the center of the bore smaller than the radius of the protrusions. The fitting member is configured to be forced onto the protrusions of the shaft with at least one inner chordal surface forming a corresponding outer surface on the protrusions in a shaving and/or deforming operation.
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Sakurai Tamio
Umezawa Koji
Cuda Irene
Nippon Piston Ring Co. Ltd.
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