This article includes a list of references, related reading or external measurement of geometric tolerances in manufacturing pdf, but its sources remain unclear because it lacks inline citations. Please help to improve this article by introducing more precise citations. Tolerance analysis is the general term for activities related to the study of potential accumulated variation in mechanical parts and assemblies.
Its methods may be used on other types of systems subject to accumulated variation, such as mechanical and electrical systems. Methods include 2D tolerance stacks, 3D Monte Carlo simulations, and datum conversions. Tolerance stackups or tolerance stacks are used to describe the problem-solving process in mechanical engineering of calculating the effects of the accumulated variation that is allowed by specified dimensions and tolerances.
Typically these dimensions and tolerances are specified on an engineering drawing. In performing a tolerance analysis, there are two fundamentally different analysis tools for predicting stackup variation: worst-case analysis and statistical analysis. Worst-case tolerance analysis is the traditional type of tolerance stackup calculation.