复杂机械产品, 参数化建模, 虚拟样机, 模型复用, 二次开发

In order to reuse virtual prototyping for complex mechanical products, an automatic reconstruction approach of virtual prototyping was proposed through program drive to the size parameters of parameterized virtual prototyping. The modeling requirements for the basic virtual prototyping of complex mechanical products were described under the demands of parametric design. The parameter naming rule was presented. The mathematical model of parameter drive mechanism was described. The solving method of constraint matrix equation was demonstrated. On the basis of all above, we developed a series of parametric modeling program for complex mechanical products. This set of programs achieves the functions of automatic dimension parameterization of the basic virtual prototyping and the automatic reconstruction of the virtual prototyping based on parameter drive.