以微机为平台，使用通用的传感器及普通数控机床对汽车覆盖件等零件进行实物采样，获取空间三维坐标点集，对数据进行数字滤波、线性化及光顺处理，清除随机误差、系统误差，保证造型精度。采用Ａｕｔｏｄｅｓｋ公司的造型软件ＭＤＴ及自编程序在计算机中生成实物模型。这对ＣＡＤ技术在企业中的运用具有重要意义，促进了微机ＣＡＤ／ＣＡＭ系统在国内的推广应用。 Using microcomputer as a platform, common sensors and ordinary numerical control machine tools are used to sample the parts such as car covers in-kind, to obtain the set of three-dimensional coordinate points in space, to digitally filter, linearize and smooth the data, to eliminate random errors, systematic errors, Ensure the modeling accuracy. Using Autodesk’s modeling software MDT and self-programming in the computer generated in-kind model. This CAD technology in the enterprise is of great significance to the use of the promotion of computer-aided CAD / CAM system in the domestic promotion and application.