异构CAD系统间的几何约束在线交换  

Online exchange in geometric constraints among heterogeneous CAD systems

作　　者：胡静[1] 周广平[1] 李路野[1] 

机构地区：[1]浙江大学计算机科学与技术学院,浙江杭州310027

出　　处：《机电工程》2010年第6期17-21,共5页Journal of Mechanical & Electrical Engineering

基　　金：国家高技术研究发展计划("863"计划)资助项目(2007AA04Z149;2008AA04Z115)

摘　　要：为保证不同CAD系统之间在线交换时几何约束的一致性,提出了一种异构CAD系统间的几何约束在线交换方法。通过分析主流CAD系统的几何约束差异性,给出了几何约束的中性命令表示;接着给出了几何约束的系统命令与中性命令的双向转化算法,并重点介绍其中的差异性解决方法;最后通过实验进行验证。实验验证结果表明,提出的几何约束在线交换方法能够有效地支持几何约束在异构CAD系统间的实时创建、修改和删除操作。To ensure the consistency of geometric constraints among different CAD systems,a method was presented for the online exchange of geometric constraints among heterogeneous CAD systems.Reasonable neutral commands for geometric constraints were defined by comparing the differences among mainstream CAD systems;then dual exchange method was introduced between system geometric constraints and neutral commands,which mainly focuses on the differences of geometric constraints presentation in heterogeneous CAD systems;Lastly the experiment was tested.Experimental results show that the method can effectively support creation,modification and deletion of geometric constraints among heterogeneous CAD systems properly.

关 键 词：中性命令 异构CAD系统 几何约束 数据交换 

分 类 号：TH164[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]