三维逆向工程技术对列车车轮磨耗的应用研究

Application Study of 3D Reverse Engineer Technology for Train Wheel Wear

摘要: 列车车轮是列车最重要的部件之一，其踏面损伤、轮缘磨损是危及列车运行安全的主要因素之一。如何更精确的测量其整体尺寸数据是列车检测和维修中亟待解决的问题。本文通过三维逆向扫描仪扫描得到列车车轮整体点云数据，再通过逆向工程软件Geomagic Studio将扫描得到的点云数据进行处理，将处理后得到的模型与CATIA建模得到的原模型进行对比，从而得到车轮运行前后的磨损数据。此测量方法，能准确的得到列车车轮整体的磨损，克服了传统测量方法以车轮某一断面参数尺寸来反映整个车轮参数尺寸的缺点。

Abstract: Train wheel is one of the most important parts of train. Tread damage and the wear of wheel flange are the main factors responsible for the safe of train. How to measure the data for wheel’s overall size is an urgent problem to detect and maintain. In this paper, we got the whole point cloud data of rail wheel through the 3D reverse scanners. Then, we dealt with the whole point cloud data with the help of Geomagic Studio engineer software. After that, we put the model we got and the standard model that we created used the Catia together. Finally, we could get the wear data through the comparison of the standard model and the model which was operated of the train. This kind of measurement can get the whole wear of rail wheel, it can overcome the disadvantage of traditional measurement which just use one part data of rail wheel.