ToleranzStackUp
ToleranzStackUp, also known as tolerance stack-up analysis, is a systematic evaluation of how dimensional tolerances on individual parts accumulate in an assembled product and influence the final dimensions and function. In practice, it seeks to determine the possible range of an assembly dimension resulting from the variability of manufacturing processes and part tolerances. The goal is to ensure that the assembled product will still meet its functional requirements and fit with mating components.
Tolerances can be linear or angular and originate from manufacturing processes, material properties, or design allowances.
Common methods include worst-case analysis, which assumes all tolerances are at their extremes to guarantee function,
A typical workflow: identify the critical assembly dimension, define tolerances with allowances, build a stack-up model,
Standards and practice: tolerance analysis is used alongside geometric dimensioning and tolerancing (GD&T) per ISO and