Joining Force Analysis and Optimum Design of Snap-fit joints for Plastic Cabinet

• Main Authors: Shu-Chen Cheng, 鄭旭成
• Other Authors: 陳政順
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/e52u9h

碩士 === 國立臺北科技大學 === 機電整合研究所 === 97 === Snap-fit joint is commonly used for directly joining and fixing the separate plastic cabinets of products like mobile phone because of easy assembly and disassembly. The purpose of this study is to investigate the inserting and holding force of this kind of joints for two mating plastic parts. Combination of commercial finite element analysis software and the design of Taguchi method are used to search the effects of design parameters like snap fit layout, insertion angle, materials, beam width, beam thickness, depth of dwell face, width of dwell face,beam length of snap-fit on inserting force and the holding force of the whole joints. In this case study, in order to search the optimum design of snap fit on the minimum inserting force and maximum holding force of mating components. gray relational theory of multiple-quality analysis has been performed to yield an optimum solution under the design criteria.The final results show that the first three influential factor for minimum inserting force is thickness of component, depth of dwell face, and insertion angle. And the first three influential factor on maximum holding force is the depth of dwell, snap fit layout, and materials.