by Jaap Vink | 2 Mar 2023

In the article ‘step plan tolerance analysis’, the steps to achieve a good tolerance analysis are briefly summarized. In the articles that followed, the method of adding tolerances is discussed. Much attention was paid to the statistics of dimensional...
by Jaap Vink | 14 Sep 2022

Previous articles have discussed the application of statistics in tolerance analysis: how statistical addition works, how to incorporate the influence of different distributions, and combining worst-case with statistical contributions. The resulting picture is that...
by Jaap Vink | 21 Apr 2020

In previous articles about tolerance analysis, I discussed the step-by-step plan and the way of adding up. Adding up tolerances can be a worst-case sum or a statistical sum. In ‘The distribution of tolerances’ I also discussed the types of distributions...
by Jaap Vink | 28 Mar 2015

In a previous article the statistical tolerance stack-up analysis is discussed. It is usually profitable to do a statistical tolerance stack-up analysis instead of a worst-case analysis. A worst-case analysis often leads to low tolerance specifications and therefore...
by Jaap Vink | 16 Dec 2013

In the article Worst-case Tolerance Stack-up Analysis you read about the worst-case or linear stack-up analysis. Such an analysis assumes that all dimensions in the tolerance chain have worst-case deviations form their nominal value. A statistical tolerance stack-up...
by Jaap Vink | 22 Nov 2013

Suppose that you went through your tolerance analysis step plan and made a tolerance chain. The only thing to do now is to add up all tolerances. This seems easy enough but there are a few questions to consider: What to do with asymmetrical tolerances? Do you perform...
by Jaap Vink | 18 Oct 2013

Tolerances become important as soon as you design an assembly of parts. Of course each dimension must be provided with a tolerance. But in an assembly the tolerances become important because all parts must fit. In this article I tacitly will assume that we are dealing...