頑健なブレンド処理のための境界表現の拡張に関する研究(第1報) : 3稜線が合流する頂点を終端とするブレンド処理

概要

論文の詳細を見る
A solid model representing a product requires filleting or blending, which rounds a specified edge or vertex, in order to make a production model for manufacturing purpose such as mould die model. Many research algorithms for blending have been proposed and commercial CAD/CAM system vendors have implemented blend functions for their systems, however, the practicing users of CAD/CAM systems in the manufacturing industry are suffering from the inability of current blending functions, such as some "holes" in the solid models because of the failure of the blending. We regard that the current major solid model structure, the Boundary-Representation(B-rep) lacks the sufficient structure for making robust blending surfaces. In our research, we propose several additional conditions for the B-rep that includes "extended surfaces" that make the blending algorithm simple and robust. In this report, we show that our proposed conditions are effective in the case of three-edge vertex blending. Several examples are shown to verify the effectiveness of our proposal.
公益社団法人精密工学会の論文
2009-03-05