![]() ![]() Tolerance stack-up analysis is unique because this analysis is half-science and half-art (depends on how we determine a tolerance chain) The main goal of tolerance analysis is to check that the dimensions and tolerances of components are correct so that after the components are assembled, the assembled product can function as desired. Tolerance stack-up analysis is a method used to evaluate the cumulative effect of tolerances allocated on the features of components and to assure that the cumulative effect is acceptable to guarantee the functionality of a product after assembly processes ( see this book).ĭifferent names refer to the same tolerance stack-up analysis, such as: tolerance analysis, tolerance-chain analysis, variation stack-up analysis and assembly-chain analysis. (You may read a post about the explanation of assembly and key characteristic)įor 3D tolerance stack-up analysis, you can read here. Examples are given to give a clear understanding on how to perform 2D tolerance stack-up analysis on parts. This post will explain the method used to analyse tolerance/variation stack-ups in 2D. How can we know how much the variations on the KCs before manufacturing the parts? These assigned tolerances cause variations on the key characteristics (KCs) of the assembled part. Every part constituting an assembled product has tolerances assigned to the part’s features.
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