异地协同设计与制造技术作为敏捷制造的重要方法和手段，已经成为制造业研究的热点。介绍了IP－VPN的基本概念和关键技术，提出了一个基于IP－VPN的实用协同设计网络模型，而异地协同设计是典型的多用户参与的多任务系统，用户之间存在大量的协同过程，因此网络平台的安全性是协同设计实施的关键问题，对基于IP－VPN的协同设计网络的安全性问题进行了研究，得出了通过采用数据加密、用户认证和基于角色的多层强制访问控制等技术可以构建一个经济、实用、安全的协同设计网络平台的结论。

As the important method and instrument of agile manufacture,the technology of distributed collaborative design and manufacturing has become the hotspot of manufacturing. The basic concept and key technologies of IP_VPN are introduced in this paper,and a collaborative design network model based on IP_VPN is presented. Distributed collaborative design is a multi_user,multitask involved system, which is consisted of lots of collaborative processs,so the network security is the key of distributed collaborative design. We research on the security of collaborative design network based on IP_VPN, hence get a conclusion:we can construct an economical?practical and secure collaborative design network system by the application of data encryption,user authentication and access control based on the role,etc.

TP391.4

黑龙江省重点CAD应用工程项目“家具计算机辅助设计系统”