Parametric Design for Engine Piston based on Pro/Engineer

The parametric design method based on feature is adopted in this paper.The parametric model of engine piston is established by the Pro/Program module of Pro/E software.According to the structure of engine piston,independent parameter and relating parameter in piston design is ascertained.The parametric dimension and parametric feature of part is realized.In the end,automatic design of piston is realized by VB development.In order to make part drawing and remodel part,the designer just need to modify the restriction parameter.Parametric design is efficient in production design and model edit.