提出了一种用于硬质合金凸、凹模加工的专用CNC工具磨床加工建模设计原理 ,分析了建模误差 ,确定了工件夹紧定位后的位置测定和刀位计算方法。 A special CNC tool grinder used in the machining of carbide and concave die was presented. The modeling and design principle was analyzed. The modeling error was analyzed and the position determination and tool position calculation after the workpiece was clamped and positioned were determined.