Importance

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Abstract

A method and a system for creating an improved cutting tool having a helical shaped cutting surface includes a computer, a computer numerically controlled milling machine and an electric discharge machine. The computer can be programmed to form the female shape of a helical spline of a cutting tool that extends longitudinally from the back of the tool to the front of the tool so that it is not parallel to a plane perpendicular to a longitudinal axis of the tool. Disposed along the spline may be a plurality of cutting teeth that each extend outward from the curved spline and have a cutting face that is curved in both a radial direction and in an axial direction with respect to the cutting tool. After forming the female shape of this spline, the computer can develop a cutting path for a tool of a numerically controlled milling machine and operate the milling machine to create an electrode having the female shape of the spline of the cutting tool. This electrode can be installed into an electric discharge machine that has a cutter blank loaded into the machine. The electric discharge machine can then be employed to form the male shape of the spline of the cutting tool.

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First Claim