Tolerance Stack-up Analysis -A review

Abstract

Lowering of manufacturing cost with higher accuracy is always demanded in industry to
increase profit. It is essential to check the tolerances after designing the component. Such kind of
analysis is performed by two ways: Bottom to top analysis and top to bottom analysis. There are some
methods available for bottom to top tolerance analysis. Tolerance stack up analysis is used to assign
tolerance scientifically to the component. The role of Tolerance stack-up analysis becomes very
crucial when it is to be applied for a very large assembly like aircraft wing. When proper Tolerance
stack up analysis is not performed, it leads to many odd situations like generation of gap, rotation of
parts etc. which may lead to rejection. This review paper is carried out to summarize suitable method
for tolerance stack up analysis especially for large assemblies.