Research on the Real Time Transmission of Accurate CAD Model in Collaborative CAD

In this paper the realization method of collaborative CAD is introduced, How to synchronize model is one of the key technologies of achieving collaboration CAD. The incremental transmission algorithm of accurate CAD model based on changed primitives is presented for replicated collaborative CAD system in this paper, which reduces greatly amount of model data transmission during the process of collaborative CAD. This algorithm effectively achieves rapid transmission of the CAD model in synchronized collaborative design, and guarantees the synchronization of collaborative model.