快速造型技术中的反求工程

阐述反求工程在快速造型技术中所起的作用；目前反求工程在快速造型中常用的测量方法是三坐标测量仪法、激光三角形法、核磁共振（ＭＲＩ）和ＣＴ法、光栅法和自动断层扫描仪法；从测量原理、测量精度以及测量材料和范围等方面对测量方法作出分析和对比；总结在快速造型技术中所用的几种测量数据处理的方法，对比这些方法的原理、严谨及使用范围；提出适用于快速造型技术的反求工程系统所应具有的功能。

Reverse Engineering in RPM

In this paper, the significance ofreverse engineering in rapid prototype manufac-turi ng(RPM) is discussed. The principle, preci-sion, measured material and range of measure-ment methods often Llsed in reverse engineering,including optical trial1gulation method, MRI andCT, automatic cross section scanning (ACSS ),CMM and Moire fringes method, are comparedand analyzed entirey. Then, the precision andlimitation of the means, which are used to pro-cess meastlre data for RPM are discussed. Atlast, the characteristics of the reverse engineer-ing system which suits to RPM are summarized.