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Machine element with at least a fitting member pressure-fitted on a shaft and method of making the same

  • US 5,419,217 A
  • Filed: 06/29/1993
  • Issued: 05/30/1995
  • Est. Priority Date: 11/19/1990
  • Status: Expired due to Term
First Claim
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1. A machine element comprising:

  • a shaft member; and

    at least one fitting member pressure-fitted on said shaft, said at least one fitting member having a bore for receiving said shaft and said shaft having at least an area formed with diamond knurling protrusions on which the fitting member is fitted,wherein said bore includes alternating arcuate and chordal surfaces on an inner peripheral surface thereof, at least one of said chordal surfaces having a perpendicular chord from a center of the bore shorter than a radius of the diamond knurling protrusions as measured from an axial center of the shaft and the arcuate surfaces being included in a circumcircular inner surface of the bore, whereby the fitting member is configured to be forced onto the diamond knurling protrusions of the shaft with at least one of said chordal surfaces of the bore engaging a corresponding outer surface on the diamond knurling protrusions.

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