中文摘要：

针对高速铁路钢轨扣件结构造型困难以及误差评估复杂的问题。介绍了一种基于逆向工程方法,即利用光栅式三维扫描仪获取的高速铁路钢轨扣件弹条的表面点云数据,运用Geomagic Studio逆向建模软件对高速铁路钢轨扣件的点云数据进行拼接和预处理,三角形网格构建优化、精确曲面造型等处理,实现对扣件弹条NURBS曲面重建。并利用Geomagic软件得到逆向建模形成的扣件NURBS曲面与原始点云数据比较的偏差色谱图,实现对逆向建模形成的弹条NURBS曲面的误差分析。完成逆向工程在钢轨扣件设计中的应用初步研究。

英文摘要：

For high-speed rail fastener structure modelingwas difficult and error evaluation was complex. In this paper,a method based on reverse engineering was used grating type 3 d scanner for high-speed rail fastener and get a surface point cloud data,than used the Geomagic Studio reverse modeling software for fastener point cloud data preprocessing,triangle grids,accurate surface modeling,such as processing,implementation of fasteners of the NURBS surface reconstruction. And using Geomagic software rebuilt NURBS surface of formation with the original deviation chromatograms of the point cloud data and realize the reverse modeling error analysis. Complete reverse engineering application in the design of rail fastener preliminary study.