Direct Interpolation Algorithm for Pen-Cutting of Sculptured Surface
Tool paths are free-form curves on the surface in the process of sculptured surface pen-cutting machining.A direct interpolation algorithm for pencutting of sculptured surface is proposed in this paper.It can directly carry out the interpolative calculation for projective curve lying on the sculptured surface and generated the motion commands for machine tool controller.This method extends the function of locus-controlled in the CNC system effectively and improved the efficiency for the NC machining of sculptured surface.The simulated and experimental results show the proposed algorithm is feasible and practical.This algorithm also can be applied to the machining of the whole surface.