3/12/2023 0 Comments Tolerance stack up![]() ![]() Statistical analysis makes assumptions that the dimensional variation follows a probability distribution. In worst-case analysis we assumed nothing about dimensional variation other than it is in the tolerance range. Within the statistical methods category there are various methods that can be employed. ![]() Tolerance analysis methods generally fall into two categories: This process is repeated until a balance of performance and cost is achieved. Then a tolerance analysis is conducted to verify that a large percentage of assemblies will not have assembly problems. For example, a loose fitting joint may not work properly or give an impression of poor quality. This can be an iterative process where tolerances are allocated to each part partly on restrictions in the manufacturing of each component and partly on performance and quality requirements. Tolerance analysis entails determining an acceptable rejection rate based on the tolerances for each part. ![]()
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