On the hardware environment of the 2-axle link-moving CNC milling machine with impulse turntable and personal computer, the application of the CAD/ CAM system of the cylindrical cam is introduced according to the cam profile curve expanding principle and the Pro/ E software package. 以增加了脉冲转盘的两坐标联动数控铣床和PC机作为圆柱凸轮加工的硬件环境,采用三轴变两轴的展成法加工方案及Pro/E软件包,探讨了CAD/CAM一体化技术在圆柱凸轮加工中的应用。