The research and development on the post-processing algorithm for four-axis CNC machines with swing-head and tilt platform

To make up the deficiency problem of post processing of CAM software in four-axis machining, a post-processing algorithm is studied which based on the four-axis CNC machines with swing-head and tilt platform. Firstly,the algorithm reads the position coordinates and unit normal vectors of every cutter location point on curved surface from the cutter location files; secondly,the actual shift of machine is gotten by coordinate transition and swing, and then generating the CNC codes according to the definition of the machine; at last, practical machining validates that the algorithm is correct and applied.