Automatic Generation of Dimensional Tolerance from Mating Relations Represented in Assembly Models

The generation of dimensional tolerances holds a pivotal role in the design process, ensuring adherence to rigorous quality standards. This paper introduces an algorithm designed to create dimensional tolerance based on the inter-component relationships within assemblies. The algorithm is built on a feature-based assembly modeling approach, which associates each component with its mating features, dimensions, and tolerances. The relationships between components in an assembly are illustrated using a mating graph. Dimensional tolerances, including their associated dimensions, tolerances, and the requisite adjustments, are automatically generated by searching the mating graph for corresponding mating features. Towards the conclusion of this article, we present a validation example to highlight the reliability of our proposed approach.