| Sheet metal parts are widely used in the field of machinery manufacturing. In the design of stamping parts often put virtual reality technology into use to satisfy the design requirements. It can get enough information of style and shape; it can also change or modify product modeling various forms, So as to achieve satisfactory results. In machining process, there are two very important links, the development and the layout blanking of the metal plate. In the production practice, the traditional development of the development and layout often rely on worker’s manual operation experiences, because of it, the error of concluded expansion graph is higher, the efficiency is lower, the cost increase. Computer assistants technology is used in the stamping parts development and optimization to meet a higher accurate and efficient. Therefore, in the design of sheet metal parts processing, sheet metal design of virtual reality support system research is of great significance and application value.This task the 3D parametric design of sheet metal and unfold and optimizing the layout blanking together, make it a separate module integration for the entire sheet metal design system, unfold the non-developable surface at the same time. The surface of the sheet metal parts are made through the meshing generation, collect the data access model, it also using the energy method in the approximate algorithm of an exhibition, and to achieve stamping parts in the virtual reality environment stereo display and interactive operation. In the process of integration and development, the whole progress is based on the Open CASCADE geometric kernel and the Visual C++ tool to complete. In addition, through the study of stereo display technology in stereo display, and the principle and algorithm of stereo display, using different methods of stereo display to realize the sheet metal pieces of stereo display. After the integration of the various modules, the function of the whole system is more perfect and powerful, and the system operation is simple and good practicability. |