反求工程与快速原型制造的集成技术

随着计算机和网络技术的发展以及信息高速公路的建设,反求工程技术(RE)与快速原型制造技术(RPM)的结合也日趋紧密.反求工程可对快速原型制造的产品进行快速、准确的测量,找到设计的不足,而快速原型制造又为反求工程提供成品,以验证设计,这样二者集成后即形成一个快速的闭环设计制造系统,实现了产品的快速开发.对二者集成的关键技术(数据接口问题)进行研究分析,考虑到现接口文件STL格式的存在的种种弊端,提出一种由点云数据直接自适应分层的处理方法.不但可以避免表面网格化所带来的误差,而且无需借助中介的文件转换格式,也就提高了RPM的效率和精度.

The Integration of RE and RPM

With the development of the computer and network technique and the building of the message expressway, RE and RPM would become more and more close. To the product by the RPM, RE could measure rapid and accurately to find the shortcoming in designing; but, RPM could offer product for RE to verify designing, so the integration form a rapid closed-loop designing and manufacturing system to complete the rapid exploitation. In this paper, the key technique of the two integration (data interface) has been analyzed, considered the more disadvantages of today's interface file-STL, a kind of method of direct adaptive layering from point cloud data is proposed. It could not only avoid the error from meshing, but not need the media to translate file. So, the efficiency and precision of RPM would be increased.