介绍了一种冲床高速送料数控系统的硬件和软件结构。数控系统硬件采取CPU主从式结构 ,驱动单元采用高、低压供电 ,恒流斩波控制 ,并根据步进电机的特性 ,将升、降速时间控制在最小范围内 ,保证送料的高速性。数控系统的软件采用模块化结构 ,根据冲床加工特点 ,参考 ISO标准 ,设置了用户指令 ,用户指令少 ,功能强 ,可大大减少用户程序的编程量。 This paper introduces the hardware and software structure of a CNC high speed feeding machine. The hardware of the CNC system adopts CPU master-slave structure. The drive unit adopts high and low voltage power supply and constant current chopper control. According to the characteristics of the stepper motor, the rising and falling time are controlled within the minimum range to ensure the high speed of the material feeding. The numerical control system software adopts the modular structure, according to the punching processing characteristic, consults the ISO standard, has set up the user order, the user instruction is less, the function is strong, may greatly reduce the programming volume of the user program.