Research On The PDM-based Parametric Variant Design System

This paper start with the concept that any design is an iterative process, and relative research is done focused on PDM application.Today the technology of Mass Customization is widely used.As an excellent designer, to produce new product with full use of the existing parts is more important than to make new parts.During the procss of designing, the proportion of customized parts, including developing design and adapting design, should be as small as possible. The proportion of transform design parts and standard parts be should be increased. More kinds of products should be made with as less parts as possible.Main work of this thesis includes these three sections,The first section introduces the basic contents of the parameter design techniques, analyzes the current two methods of the feature based parameter design techniques. Using Pro/ENGINEER as the study object, study the Top-Down parameter design technique. Introduce the basic theory of the variant product design; analyze the current main methods and techniques of the variant product design.The Second Section is using the typic parameter design CAD software as the target object for studing. Study the Re-Development of CAD softwares. It introduces the techniques of Pro/ENGINEER Re-Development, compares their features, and finally selects the Pro/TOOLKIT as the Developing techniques. After these studies, using the Object-Oriented Thinking, It studies the Object-Oriented Pro/ENGINEER Re-Development basing on the mixing use of C and C++.The third section is the study of basic methods and techniques in the parameter based variant design and its modeling techniques. It introduces a datum-based auto assembly method for assembly variant design. As the PDM system is abroad applied in today industry, it introduces the PDM based variant design, and study its key techniques. Finally, with the C/S framework, it introduces the PDM based variant design system and its software.