| Summary: | 碩士 === 逢甲大學 === 工業工程學所 === 90 ===
In the past literature on geometric dimension for assembly the attention has been put on process parameter and tolerance design, and their relationship to cost. The optimal objective function is obtained from the minimization of the total manufacturing cost, which includes tolerance cost, failure cost and quality loss cost. Even though this problem can be dealt with by considering process parameter and tolerance design in one stage, further attention has to be drawn on the factors affecting the accuracy of assembly, which include the process parameter, tolerance, clearances, temperature and, mechanical loading. There are currently few literatures discussing the impact of mechanical loading on the product’s fitness for use. However, the product deformation resulting from force of mechanical loading is likely to make the parameter and tolerance values initially designed for a product to become inappropriate after loading. In this study, by ways of numerical statistics and mathematical programming, we will consider the deformation of product under force of mechanical loading, taking process parameter and tolerance as decision variables to find out the optimal values in one stage. This method is aimed to help the designer to correct their product during the designing stage and avoid the modification cost that may occur at the later stages of the product’s lifecycle.
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