Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Toolpath Generation for Three-axis Round-end Milling of Triangular Mesh Surfaces

삼각망 곡면의 3축 라운드엔드밀 가공을 위한 공구경로 생성

  • Chung, Yun-Chan (Department of Die and Mould Engineering, Seoul National Univ. of Technology)
  • 정연찬 (서울산업대학교 금형설계학과)
  • Published : 2009.02.25
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Abstract

Presented in this paper is a method to generate round-endmill toolpaths for sculptured surfaces represented as a triangular mesh model. The proposed method is applicable in toolpath generation for ball-endmills and flat-endmills because the round-endmill is a generalized tool in three-axis NC (numerical control) milling. The method uses a wireframe model as the offset model that represents a cutter location surface. Since wireframe models are relatively simple and fast to calculate, the proposed method can process large models and keep high precision. Intersection points with the wireframe offset model and a tool guide plane are calculated, and intersection curves are constructed by tracing the intersection points. The final step of the method is extracting regular curves from the intersection curves including degenerate and self-intersected segments. The proposed method is implemented and tested, and a practical example is presented.

Keywords

References

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