Arvind Rangarajan and Chih-Hsing Chu
Sponsored
By: CODEF
Abstract
Tool failure and milling exit burr formation usually occur when the tool
cutting edges move out of the workpiece. One of the most effective methods
for minimizing these problems is to prevent the tool from exiting the
workpiece while removing material. This can be achieved by special tool path
planning. In this paper we presents a set of geometric algorithms that avoid
tool exits in planar milling of 2D polygonal and curved contours. Tool paths
are generated by offsetting the workpiece edges with appropriate widths of
cut, depending on the edge types (straight or circular). A tool path planner
is successfully implemented with those algorithms. Tool exits are thus
completely eliminated in an automatic manner.
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