结合国内外研究现状 ,对自由曲面测量中曲面CAD模型已知时测点的自适应分布、测量路径优化、自由曲面形状误差评定和 CAD模型未知时的测量规划和测点数据处理等几个关键问题的实现方法进行了分析研究 ,并对测点的自适应分布做了仿真研究 ,证明了其有效性 Combining with the research status at home and abroad, this paper analyzes the key points of the adaptive distribution of measuring points, measuring path optimization, shape error of freeform surface, measurement plan and measuring point data when the CAD model of freeform surface is known, The method of the problem is analyzed and studied, and the adaptive distribution of the measuring point is simulated and proved to be effective