The Research And Application Of Networked Collaborative Design System Based On 3D CAD

For making full use of the network resources and the computer techniques,and realization of the information fusion acrosses the districts to match the progress of manufacture,Computer Supported Cooperative Design is become a hotspot of across the profession research currently.Among them distributive synchronous design,and also call realtime cooperation design,is the most difficult method in various ways of cooperation design.Domestically and abroad are all in aggressive research.But mostly are theoretically study or prototype system with simple function.There is still many difficulty those did not be solved.For example how obtain the dynamic increase data,how to express design-semantics,cooperation of complex operate,more practical concurrent control and mechanism to solve conflict.In this paper,research and development has been carry on about cooperation design problem and key technique of network realtime cooperation design based on SolidWorks.After full research on network system structure,CoDeCAD prototype system was composed of C/S and B/S mixed distributed computer architecture,The system has two parts:server and client.This system exchanges dynamic data among each clients.The system uses XML as the format design message structures and three dimensional models'data representation for messages,reduce the network transmission of data.Then use a persistent naming access interface provided by SolidWorks system,access and extract persistent identification and effectively support an application of persistent naming in collaborative design.The system maintenance in the change process to keep the client user CAD resource model data and modifying the design of the information semantic consistency.Several collaborative methods developed in this paper such as synchronous browsing,collaborative meeting,text communication and web publishing are realized in this system.With the system,the collaborative design activities can be proceeded more effectively.Collaborative design system can respond rapidly and is stable and easy to be managed with.It will provide a kind of valid path about information exchanges and knowledge shareing for the modern product design.