Study on the 2-axis NC machining of a toroid-shaped cutter with a constant angle between the cutting edge and the cutter axis

This paper provides a method for the design and NC machining of a toroid-shaped cutter. The geometrical models of the cutting edge and helical groove of a toroid-shaped cutter with a constant angle between the cutting edge and the cutter axis are presented. The section and relative feeding speeds of the grinding wheel in the NC machining of the cutter are deduced under the condition of a constant revolving speed. According to the simulation results of the actual groove obtained, the approaches for eliminating errors in the residual revolving surface and local narrower cutting edge strip are presented. This paper provides a method for the design and NC machining of this kind of toroid-shaped cutter.