CNC tool path in terms of B-spline curves

C. Lartigue*, F. Thiebaut, T. Maekawa

*この研究の対応する著者

研究成果: Article査読

74 被引用数 (Scopus)

抄録

We present an accurate and efficient method to generate a CNC tool path for a smooth free-form surface in terms of planar cubic B-spline curves which will be fed into a free-form curve interpolator. We assume the use of a three-axis CNC machine tool with a ball end-mill cutter. We first interpolate break points, which are generated by computing the offset surface-driving plane intersection curve reflecting the curvature, by a planar cubic B-spline curve. We then evaluate the maximum scallop height along a scallop curve by computing the stationary points of the distance function between the scallop curve and the design surface. Furthermore, we compute the maximum pick feed such that the maximum scallop height along a scallop curve coincides with the prescribed tolerance. Illustrative examples show the substantial improvements this method achieves over conventional methods where the tool path consists of linear or circular paths.

本文言語English
ページ(範囲)307-319
ページ数13
ジャーナルCAD Computer Aided Design
33
4
DOI
出版ステータスPublished - 2001 4月 2
外部発表はい

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • コンピュータ グラフィックスおよびコンピュータ支援設計
  • 産業および生産工学

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