关键词: 特征相交, 原始面命名, CAD

Abstract: According to the feature intersecting issue in the research and application of feature technology, a new approach for detecting intersecting features was proposed. The approach was based on original face naming mechanism for topological entities and took the topological edges in geometry model as a core. Firstly, the two adjacent faces' name attributes of all the topological edges were checked in geometry model. Then, the topological relation, which is between the topological edges in geometry model and the corresponding original faces in the feature volumes or between the original faces in two different feature volumes, was determined. Using the proposed approach, the intersecting features can be detected correctly. Furthermore, the approach is of high efficiency because it replaces Boolean operations by just checking names of features' faces.

Key words: feature intersecting, original face naming, CAD