Biarc Approximations Tool-Path Generation for Polyhedral Models

Abstract:

An effective biarc approximate tool path generation algorithm is presented for polyhedral models. A series of sections intersect the offset surface of polyhedral models to obtain the initial tool paths. The path interval is calculated by the curvature radiuses and scallop height for offset surface models. Within the range of fitting precision, based on the biarc fitting constraint condition and adjustment parameter of curvature, iteration method is used to determine adjustment parameter of curvature radius. So the last radius for biarc is obtained for fitting the initial tool paths. Example shows the method can keep G1 biarc approximations tool path and fewer biarc segments, so the machining efficiency is improved.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 32-36
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.32
• Online since: February 2014
• Authors: En Tao Yuan, Bing Shao
• Keywords: Biarc Fitting, Curvature Radiuses Estimation, Path Interval Calculation, Polyhedral Machining

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