Abstract
It is well recognized that the skill of tool motion and cut arrangement not only governs the efficiency of rough turning but also affects the cutting sequence and tooling. In the automatic plogramming system for turning “MELTS” which is featured by its higher level of technical automation, especially the determination of tool motion and cut arrangement constitute an important part. This report treats with the algorithm which automatically determines the direction of tool motion and arranges the way of cut including the stock allowance referring to blank and part contours. The algorithm has been implemented by summarizing and systematizing the know-how obtained from skilled operators and process planners throughout the country.