网络协同设计下的三维建模技术

三维几何模型的共享是协同设计的关键,提出用形状特征来表达共享模型,并把形状特征参数化,创建特征模型的参数配置表.共享模型的任何改变均可描述为形状特征参数的改变,并能同时完成参数配置表的修改,通过遍历特征建模的历史记录来重新生产模型.提出了基于Internet的协同设计特征建模体系结构,由3D共享建模、网络特征建模服务器、特征建模用户和标准通信协议等组成.所有用户使用同一服务器,服务器维护3D特征建模、维护设计者意图、确保数据交互的一致性、保证所有用户实时更新并管理所有用户之间的通信交互.

3D modeling based on internet collaborative design

A novel approach for 3D modeling was developed.It used form feature to represent the share model,parameterized the form feature,and established its parameter list.Any change of the share model was viewed as the parameter modification of the form feature to modify the parameter list,and the new model was recreated through accessing the log of feature modeling.Based on it,a framework which supports synchronous Internet based collaborative design among members in distributed design teams was presented.It was composed of the 3D share modeling network feature modeling server,feature modeling clients,and the standard communication protocols.All the clients use the same server to maintain the 3D feature modeling,guaranteeing data consistency,keeping all clients up-to-date,and managing all communications.