本文主旨在研究不同的容差分析方法應用在包含軸孔配合的組件。研究首先觀察單軸孔配合的關鍵尺度變化情形，其次將雙軸孔配合分為干涉與間隙兩種配合狀況分別討論。研究的重點包括分析配合件的實體接觸位置、推導相關的尺度鏈與評估可能的容差累積。本研究對雙軸孔配合的容差分析，成功的開發了一種新的方法稱為分離法。利用它可以有效估算在軸件受外力約束之條件下導出尺度的變化情形。實作的範例是依據蒙地卡羅模擬法的結果為基準，分別比較傳統的統計法、業界常用的偏移法及本研究開發的分離法之適用情形與準確性。

This work discusses different tolerance analysis methods which have been applied to the assemblies with double bolt-hole fits. The research starts from investigating the variation of key dimensions for the assemblies with single bolt-hole fit. Later, the discussion of the assemblies with double bolt-hole fits is classified as two groups, interference fits and clearance fits. This research focuses on the analyzing the contact positions of assemblies, developing corresponding dimension chains and evaluating possible tolerance accumulation. In this thesis, a new tolerance analysis method called separation method has been developed for analyzing the products with double bolt-hole fits. For the bolts under force constraints, the method can effectively evaluate the variations of the resultant dimensions. A comparison among the statistical method, the assembly shift method and the separation method has been made and the feasibility and effectiveness are examined based on the results from the Monte Carlo simulation.

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