Three-Dimensional Reconstruction of Shell Workpiece Oriented to Dispensing Processing
In order to solve the problem of low precision and complicated process in the current dispensing process,a three-dimensional reconstruction method of shell-like workpiece based on line laser scanning is proposed,which can be used for subsequent dispensing trajectory extraction.Firstly,a line laser scanning platform is built to obtain the point cloud data of each field of view of the mobile phone case workpiece.Secondly,the point cloud filtering method is used to remove invalid points,downsample and denoise the ini-tial point cloud.Then,the five-axis machine tool calibration algorithm is used for coarse registration of the point cloud,and the iterative closest point(ICP)algorithm is used for fine registration of the point cloud,and the complete three-dimensional model of the mobile phone case workpiece is obtained after deleting the duplicate points.Finally,the reconstruction accuracy of the mobile phone shell workpiece is verified by ex-periments.The results show that the maximum deviation of the width of the mobile phone shell reconstruc-tion model is within 0.15 mm,and the average deviation is only 0.079 mm.Compared with the rough reg-istration,the precision of fine registration is improved by 79.48%,so the reconstruction method of the mo-bile phone shell workpiece can meet the requirements of dispensing accuracy.
万方数据
维普
