逆向工程的车身三维造型数字化技术

Digital Technology of the Auto Body Three-Dimensional Model Based on the Reverse Engineering

针对汽车车身设计的特点,提出基于逆向工程技术的车身数字化设计平台框架,并对车身复杂曲面的造型方法和实施逆向工程的关键技术进行研究.首先根据已有的汽车车身外形,采用逆向工程技术和数字化技术,依据STEP标准建立起车身数据的统一数据模型,建立相应的工程数据库;然后,通过分布式PDM解决数据集成和过程集成,把车身数字化设计系统的各个子系统综合起来,最后,利用网络协议和分布式操作平台,架构车身虚拟数字化设计平台.

According to the features of auto body contour design,this paper puts forward a framework of digital design platform for auto body based on the reverse engineering technology,and studies the complex surface modeling method of auto body and some key technologies during the application process of the reverse engineering.In the first place,a corre-sponding engineering database according to the existing auto body shape is established.Then,the various subsystems of the auto body digital design system are colligated through the distributed PDM to solve the data integration and process integration.Finally,using the network protocol and the distributed operation platform,the virtual auto body digital de-sign platform is constructed.