Smoothing Parametric Method to Design Addendum Surface

A smoothing parametric addendum surface design method has been developed to improve the quality and efficiency of mold industrial design. This paper proposes to establish the section curve types database based on the user-modified characteristic parameters, and presents the method based on thin-plate-under-tension model to generate addendum surface by the section curves and connect-lines. There has the second-order continues between surface-patchs, thus it ensures the good smoothing of the overall surface. The relevant parametric design module is independently developed in Visual C++ based on software KMAS. We use an auto panel addendum surface successfully design process as an example to illustrate the application and effectiveness of the method.