Having first defined the constant helical angle as the angle between the cutting edge and the revolving axis of the cutter, this paper then presents design models for producing the helical cutting edge and helical groove of a revolving cutter with a circular-arc generator. The section profile and relative feed speed of the grinding wheel in the NC machining of the cutter are derived for a given speed of rotation. A revolving cutter with a circular-arc generator and an approximately constant angle between the helical cutting edge and the axis of the cutter may be obtained. A remedial grinding operation to eliminate the residual revolving surface is also presented. A series of ideal models of the NC machining of this type of revolving cutter are provided. This paper provides a valuable reference for the design and NC machining of this cutter type.
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