Cutter Location without Interference Based on Nine Points Optimization Algorithm

Cutter location without interference is the key question in complicated surface NC machining. Starting with the theory of minimum directed distance, this paper, aiming at the problem of cutter location path without interference in the NC machining, reaches an important conclusion that the nine points optimization algorithm based on change step and change search range can get the global optimal solution. Meanwhile, this algorithm solves the astringency problem in iteration algorithm, and avoids a number of point set calculations in the whole area. Due to its features of fast calculation, simple principal and so on, it turns out to be a very effective method to calculate cutter path in NC machining of complicated curved surface.