普遍的公差分析與公差配置鮮少將製程能力指數納為參考項目，因此本研究將製程能力指數作為統計模式與蒙地卡羅模式的分析參數，設計者能獲得較符合實際製程之公差分析結果。本研究的公差配置同樣參考製程能力指數配置組成環之製造公差，依照公差設計前、後期，配置的方法分為一般配置與最佳化配置兩種；當在公差設計前期時，根據組成環的公稱尺寸與製造公差，使用一般配置重新配置組成環的製造公差；當在公差設計後期時，設計者已經累計些許製造成本相關的數據，便可利用成本函式以及田口式品質損失函式建立該組裝的最低製造費用之目標函式，並以基因演算法求解該目標函式，獲得該組裝的最低製造費用之組成環製造公差。 General tolerance analysis and tolerance allocation methods seldom make process capability index being reference conditions, therefore this research make process capability index being analysis parameter for statistics model and mote cole model, the designer can obtain tolerance analysis result correspond to reality process. This research tolerance allocation also refer process capability index to allocate the manufacturing tolerance of component links, then tolerance alloction classify general allocation and the optimum allocation from the earlier period and later period of the tolerance design. When the earlier period of tolerance design, using general allocation allocate the manufacturing tolerance of component links from the manufacturing tolerance and the nominal of component links; when the later period of tolerance design, the designer have already accumulated the cost data, then using cost-tolerance function and Taguchi quality loss function find the minimum cost function, finally sloving the minimum cost function by genetic algorithm obtain the manufacturing tolerance of component links for minimum cost.
