@article{ren_zhu_lee_2005, title={Material side tracing and curve refinement for pencil-cut machining of complex polyhedral models}, volume={37}, ISSN={["1879-2685"]}, DOI={10.1016/j.cad.2004.10.003}, abstractNote={In this paper, a new Material-Side-Tracing method and a pencil-cut curve refinement technique are proposed for 3-axis pencil-cut path generation. Pencil-cut machining has been used to remove remaining material at highly curved regions or corners after the finishing process. Procedures of evaluating and extracting valid pencil-cut points are developed by taking practical cases into account. With the strategy of using material-side information in the tracing process, smooth and clean pencil-cut curves can be generated even if the actual adjacent pencil-cut curves are very close. A technique of pencil-cut curve refinement is presented to overcome the limitation due to the discrete CL-net intervals, and the smooth pencil-cut paths are made complete at sharp corners. Computer implementation and practical examples are also presented in this paper. The proposed techniques can be used in the CAD/CAM systems to generate pencil-cut paths for machining complex polyhedral models.}, number={10}, journal={COMPUTER-AIDED DESIGN}, author={Ren, YF and Zhu, WH and Lee, YS}, year={2005}, month={Sep}, pages={1015–1026} }