When converting CC data (cutter contact point data) into CL data (cutter location data) for tool-path generation for arbitrary pockets, overcut avoidance plays an important role in CNC pocket milling. Complicated calculations of the self-intersections in the offset of spiral cutting is one of the main considerations in some algorithms. This study presents a quasi-offset method to solve complicated self-intersection calculations. Instead of using offsetting methods, the proposed method uses the location points and their track types to generate the son loop. The proposed quasi-offset method also makes it much easier to generate spiral tool paths.
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You, CF., Sheen, BT. & Lin, TK. Robust Spiral Tool-Path Generation for Arbitrary Pockets. AMT 17, 181–188 (2001). https://doi.org/10.1007/PL00003944
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DOI: https://doi.org/10.1007/PL00003944