A Smooth Spiral-like Tool Path with Controlled Cutting Width for Pocket Machining
نویسندگان
چکیده
We present an algorithm for generating G 1-continuous spiral-like tool paths for machining pockets without islands. The pocket may be an arbitrary simply-connected 2D shape bounded by straight-line segments and circular arcs. Based on the Voronoi diagram of the pocket we generate a sequence of nested Jordan curves (“wave fronts”) inside the pocket that are linked to form a spiral-like tool path. The tool path is guaranteed to be free of self-intersections and allows to machine the pocket without tool retractions. Most importantly, the tool path complies with a user-specified maximum cutting width. The start point of the spiral may be chosen freely by the user anywhere within the pocket. We implemented and tested our algorithm on real-world data. However, due to lack of space, in this paper we focus only on the geometric and algorithmic aspects of the tool-path generation.
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