面向虚拟环境的CAD装配模型向运动模型的转换  

A Method for Transforming a CAD Assembly Model to a Kinematics Model under Virtual Environment

作　　者：郭晓宁[1] 杨轩[1] 

机构地区：[1]福州大学机械工程及自动化学院,福州350108

出　　处：《机械科学与技术》2010年第5期680-683,689,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：福建省科技三项项目(2006F5059);福州大学科技发展基金项目(2006-XQ-14)资助

摘　　要：探讨了在虚拟环境中进行复杂机械产品运动分析时CAD装配模型向机构模型转化的信息识别。首先在总结CAD装配系统提供的各种装配约束类型与其相对应的运动几何元素基础上,给出了平移和旋转自由度的归约规则,根据简单运动副约束与运动自由度及运动几何元素的映射关系,实现从零部件装配信息到运动分析用的构件和简单运动副信息的转换。A information identification and transformation method from a CAD assembly model to a kinematics analysis model in the process of kinematics analysis of complex mechanical products under virtual environment is presented in this paper.The motion geometry element corresponding to each type of the assembly constraint provided by CAD assembly system is built.Then,the rules for merging of translation freedom and rotation freedom are derived.According to the mapping relation between the simple joint constraint and the motion geometry element,the transformation from the components and their constraints information to the rods and their joints information is realized.

关 键 词：虚拟环境 CAD装配模型 运动分析模型 识别 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]