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논문 기본 정보

자료유형
학술대회자료
저자정보
Masatomo Inui (Ibaraki University) Nobuyuki Umezu (Ibaraki University) Hidekazu Kamei (Ibaraki University)
저널정보
(사)한국CDE학회 한국CDE학회 국제학술발표 논문집 한국CADCAM학회 2013 ACDDE
발행연도
2013.8
수록면
473 - 482 (10page)

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초록· 키워드

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In this paper, the authors propose a system for assisting mold designers of plastic parts. Plastic parts are usually produced by the injection molding. In this method, the formed part must be removed from the mold core in a single ejecting direction. With a CAD model of a part, the system automatically determines the optimal ejecting direction of the part with the minimum undercuts. Two methods are introduced for improving the performance and the accuracy of the authors’ prior system. New point distribution method for the discrete Gauss map is adopted which is based on the architectural geodesic dome concept. Hierarchical structure is also introduced in the point distribution, a higher level “rough” Gauss map with sparse point distribution and another lower level “fine” Gauss map with much dense point distribution. By using this discrete Gauss map representation, a new algorithm is developed for computing the optimal ejecting direction. An experimental system is implemented and computational experiments are performed. Our system needs less than 30 seconds for determining the optimal ejecting direction of a CAD model with more than 1 million polygons.

목차

Abstract
1. Introduction
2. Related Studies
3. Algorithm Outline
4. Details of the Algorithm
5. Computational Experiments
6. Conclusions
References

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