Abstract
The proposed tool-path planning algorithm in this paper is based on the data generated by Level Set Method, which can naturally eliminate self-intersections of the offset surface during ball-end milling. The offset Cutter Location (CL) surface can be represented by a set of discrete points which can be obtained from linear interpolation of the Signed Distance Function. Parts of the points on CL surface are filtrated according to the fitting error to form CL paths, while the path intervals are determined according to the iso-scallop rule. This strategy will guarantee perfect surface quality with good uniformity as well as high efficiency. The determination and checking algorithms of CL points are both comprehensive and concise, which can be easily implemented.
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