A Machining Feature Recognition Method Based on Topological Rules

In order to solve the problem of automatic recognition of machining features, a machining feature recognition method based on topological rules was proposed. In the method, by analyzing the B-Rep structure of the model, elements such as rings, faces, and edges are obtained. According to the topological relationship of the model, the relationship graph of the three-dimensional model is constructed. By comparing the relationship graph of the model to be identified with the relationship graph of the standard features in the rules database, if the structure is consistent, it is such a feature, and the feature types of the standard feature rules database are continuously enriched to realize the automatic identification of multiple features. Finally, the results show that the proposed method is effective and feasible by automatically recognition of Machining feature of multiple models.