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• Main Authors: An-Sheng Hsiao, 蕭安勝
• Other Authors: Jiing-Yih Lai
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/4aycff

碩士 === 國立中央大學 === 機械工程學系 === 107 === Solid meshes affect the accuracy and efficiency of the analysis and simulation. However, Solid mesh generation is usually a time-consuming process. Thin-wall plastic parts exist in many products and are frequently manufactured by injection molding. The inner surface of a thin-wall part involves many functional and structural features design, such as ribs, tubes and complex supporting structure. If we use tetrahedron meshes to generate these features, it usually results in poor quality mesh. The purpose of this study was to develop a method for the detection of protrusion features on thin-wall plastic parts. In the proposed algorithm, the inner and outer faces of a part model were recognized first, then auxiliary faces, including transitional, wall and bottom faces, were next recognized. In designing a model, the generation of the parting line is one of the most time consuming processes. The model designer may find it difficult to determine the parting line and parting surface. The purpose of this study was to recognize parting line, core surfaces and cavity surfaces.