本文提出一种雕塑曲面ＣＮＣ加工的新方法．针对目前ＣＮＣ加工的园弧拟合中出现的拟合节点多、园弧段数多、误差控制困难等问题，本文采用了一种优化的双园弧拟合方法和误差控制方法，使拟合数据点、计算工作量及园弧数均大大减少，插补误差得到有效的控制，从而提高了加工效率与加工质量．本方法在雕塑曲面的ＣＮＣ加工中具有实用意义 This paper presents a new method of CNC machining of sculpture surface. In order to solve the problems of many fitting nodes, large number of arc segments and difficult error control in the arc fitting of CNC machining, an optimized dual arc fitting method and error control method are adopted in this paper. The fitting data Point, the calculation of the workload and the number of arc are greatly reduced, interpolation error is effectively controlled, thereby enhancing the processing efficiency and processing quality. This method is of practical significance in the CNC machining of sculpture surfaces