Tool path generation for clean-up machining by a curve-based approach

Authors:
Dong-Soo Kim;Cha-Soo Jun;Sehyung Park
Affiliations:
CSCAM, South Korea;Division of Industrial and Systems Engineering and Research Center for Aircraft Parts Technology, Gyeongsang National University, 900 Kajwa-dong Chinju, Chinju 660 701, South Korea;Korea Institute of Science and Technology, South Korea
Venue:
Computer-Aided Design
Year:
2005

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Abstract

This paper presents a new efficient and robust tool-path generation method that employs a curve-based approach for clean-up machining. The clean-up machining discussed in this paper is pencil-cut and fillet-cut for a polyhedral model of the STL form with a ball-end mill. The pencil-cut and fillet-cut paths are obtained from the curve-based scanning tool paths on the xz, yz, and xy planes. The scanning tool path has exact sharp-concave points and bi-contact vectors, both of which are very useful to detect 'pencil-points', to trace the pencil-cut path, and to generate the fillet-cut path. In the paper, some illustrative examples are provided, and the characteristics of the proposed method are discussed.