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Method for forming threads

  • US 4,016,801 A
  • Filed: 09/30/1974
  • Issued: 04/12/1977
  • Est. Priority Date: 09/30/1974
  • Status: Expired due to Term
First Claim
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1. The method of generating a continuous non-symmetrical thread of a given pitch on a cylindrical workpiece by a modified process of thread whirling comprising:

  • rotating the workpiece about a first axis corresponding to the axis of the workpiece;

    making a continuous cut around a surface of said cylindrical workpiece by means of a point cutting tool rotating about a second axis offset from and non-parallel to said first axis, said tool is in essentially continuous contact with said workpiece; and

    effecting relative linear motion between said workpiece and said rotating tool parallel to said first axis and in spaced relationship with the rotation of said workpiece corresponding to the pitch of the threaded form.

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