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A Dexel Based Algorithm for Evaluating Thickness of Solid Models (ACDDE 2010)
Satoru Yamazaki,Nobuyuki Umezu,Mastomo Inui (사)한국CDE학회 2010 한국CAD/CAM학회 국제학술발표 논문집 Vol.2010 No.8
In the current manufacturing practice, injection molding is widely used for fabricating plastic parts of various consumer products such as digital cameras, printers, and other electric appliances. In designing a plastic part, thickness of the part should be constant all over the surface, otherwise some deformations happen in the molding process which deteriorate the aesthetic quality of the product. In this paper, the authors propose a fast algorithm for evaluating the thickness of the solid model. Most commercial CAD systems provide some kinds of thickness measuring functions of solid models, these functions, however, are not appropriate for evaluating thickness of the complex shape. In this paper, a new definition of the thickness of the solid model is proposed. Based on the definition, a dexel based thickness evaluation algorithm is developed. A depth peeling based method for converting a boundary representation solid model into a solid model in the dexel representation is also proposed. A system is implemented and some computational experiments are performed.
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