Optimal tool path modeling in contour milling process

Abstract

In the design of CNC metal cutting technology, the tool path in contour milling is usually adjusted to technology form of the modeled work piece and contour to be processed, which satisfies the geometric criterion, that is the simplest in the choice of tool path. In this tool path selection, other criteria in terms of cutting forces, tool wear intensity, maximum depth, maximum cutting speed and desired surface quality, which are crucial for the productivity and efficiency of machining processes, are neglected. This paper presents the analysis of influencing factors on tool path choice in contour milling including phenomenological appearance in the cutting zone to identify the possibility of determining the optimal tool path. Among other things, an overview of the opportunities offered by modern CAM systems in generating NC code, which solves the problem of the tool path selection in contour milling, is given here.