Research On Re-manufacturing Modeling Method Of Damage Parts

With the continuous improvement of the science and technology level, industrial manufacturing technology is more and more advanced. Excellent production technology and production equipment is also becoming more and more sophisticated. At the same time, the requirement of the service condition of the parts is increasing, which leads to the increase of maintenance requirement. Parts maintenance is no longer limited to traditional forms, because of more consideration of the new manufacturing technology. New parts manufacturing process is also joined the thinking method of maintenance, the maintenance technology and the manufacturing technology interpenetrating in many ways. Therefore, the repair of damaged parts has been given a broader meaning. Re-manufacturing engineering which is based on reverse engineering technology, is being constantly developed and applied in the practical production. This paper that making industrial damage parts as the research object, conducts the thorough research on modeling methods. The process of the re-manufacturing technology of 3D model can be divided into three parts, point cloud data acquisition, point cloud data preprocessing,3D model reconstruction.(1) In the stage of point cloud data acquisition, the scanning method, equipment, and scheme for damaged parts have been putting forward, based on the measurement of the point cloud about mechanical parts and the analysis of the methods and equipment. Furthermore, this paper completes the work of the point cloud data acquisition about typical parts.(2) In the stage of point cloud data preprocessing, the method and principle of point cloud stitching, denoising and simplification are summarized in the paper. And the corresponding methods and algorithms are explained in detail. Finally based on the OpenGL development platform, the paper builds an MFC application in the VS2010 development environment, uses the C++language compile a software, which can realize the function of the asc, STL format point cloud data display, the asc format file preprocessing.(3) In the stage of 3D model reconstruction, first the paper gives a simple description about the basic knowledge of the triangulation in point cloud data and the curved surface fitting. Then combining with the Geomagic Studio software, this paper provides details on the reconstruction process and the methods of damaged parts model, and completes the evaluation of the result. Finally this paper draws a picture which is suitable for the description of the whole manufacturing process modeling for damaged parts.