Research on the Knowledge Acquirement of Rapid Design for Mechanical Products

During the process of mechanical products rapid design, the key issues trouble the designers are obtaining the design knowledge and extracting the design rules. In order to solve the problem of design knowledge complex range, the level/modular approach of product unstructured data division is presented. Through the unstructured data study of mechanical products, the domain ontology model based on the whole life cycle information is set up. The domain ontology model enables the designers to share design knowledge and experience in different departments. Since the design rules are difficult to extract during the design process, the reduction algorithm based on rough set theory is applied to data mining. The method completes the product data reduction and improves the effectiveness and accuracy of the design rules extraction. The example indicates the feasibility and effectiveness of the method.