Toleranssianalyysin

Toleranssianalyysi is a Finnish term that translates to "tolerance analysis" in English. It is a method used in engineering and manufacturing to assess the impact of manufacturing variations on the performance or functionality of an assembled product. Every component has a certain degree of variability in its dimensions due to manufacturing processes. When multiple components are assembled, these variations can accumulate, potentially leading to deviations from the desired design specifications.

Tolerance analysis systematically accounts for these permissible variations, known as tolerances, which are typically defined on engineering drawings. The goal is to determine if the assembled product will still function as intended within the specified tolerance limits. This analysis helps engineers identify critical dimensions that are most sensitive to variations and understand the likelihood of assemblies failing to meet performance criteria.

There are various methods for performing tolerance analysis, including worst-case analysis and statistical analysis. Worst-case analysis assumes that all tolerances are at their extreme limits simultaneously, providing a guaranteed outcome but potentially leading to overly tight and expensive tolerances. Statistical analysis, on the other hand, uses probability distributions to predict the likely range of outcomes, often resulting in more realistic and cost-effective tolerance allocations. By employing tolerance analysis, manufacturers can proactively manage variability, reduce the risk of product defects, and optimize design for manufacturability and cost.