基于约束的机械产品零件参数化特征建模技术研究及实现

Research and implementation of the constraint-based parametric feature model of mechanical part

首先系统给出了机械产品造型领域特征的定义以及特征的分类 ;其次 ,建立了基于约束的机械产品零件的参数化特征模型 ,并用特征关系图的形式表达特征模型 ,同时采用动态链表构建特征模型并用面向对象技术实现了零件的参数化特征模型 ;最后结合实例分析了基于特征模型的零件特征分级参数化实现过程。

The feature definition and the feature classification are given firstly. Then the constraint-based parametric feature model of mechanical part is set up. A graph called feature relation graph is used to represent the feature model and a dynamic linked list to build and store the model. Using the OOP technique, the author realized the feature model. Based on the parametric feature model, the feature hierarchical parametrization is analyzed and a parametric example is also given.