基于参数化建模的复杂机械产品虚拟样机复用

Reuse of Virtual Prototyping for Complex Mechanical Products Based on Parametric Modeling

为实现复杂机械产品虚拟样机的复用,提出了一种由程序驱动参数化虚拟样机尺寸参数来自动重建虚拟样机的方法。论述了符合参数化设计需要的复杂机械产品虚拟样机基础模型建模要求,并在阐述尺寸参数命名规则、参数驱动机制和约束矩阵方程求解方法的基础上,开发了参数化建模系列程序。该套程序实现了复杂机械产品虚拟样机基础模型的自动参数化和尺寸参数程序驱动下的虚拟样机自动重建。

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.