Determination of cutting direction for minimization of tool retraction length in zigzag pocket machining

Authors:
Byoung Keuk Kim;Joon Young Park;Hyun Chan Lee;Deok-Soo Kim
Affiliations:
Department of Industrial Engineering, Dongguk University, Seoul, Korea;Department of Industrial Engineering, Dongguk University, Seoul, Korea;Department of Industrial Engineering, Hongik University, Seoul, Korea;Department of Industrial Engineering, Hanyang University, Seoul, Korea
Venue:
ICCSA'03 Proceedings of the 2003 international conference on Computational science and its applications: PartIII
Year:
2003

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Abstract

In this paper, we determine a cutting direction which minimizes the tool retraction length in a zigzag pocket machining. A tool retraction, in a zigzag pocket machining, is a non-productive operation in which the tool moves to any remaining regions for machining. We developed an algorithm of generating a tool retraction length in simple polygonal shapes. In the algorithm, we considered a reflex profile of cutting direction in a polygonal shape. Considering reflex profiles of cutting direction, the polygon is decomposed into several subregions, which do not need any tool retractions. Consequently, we propose a new result that the tool retraction can be minimized when a cutting direction is parallel to concave edges. Examples are shown to show the validity.