本文阐述了以小教授单板机为核心所组成的线切割机的数控装置,采用单板机的主要原因是价格低,尺寸小,重量轻,且易于执行大量的逻辑运算,使数控线切割机由硬件控制转换成软件控制,结果使模拟网络的电路变成单板机的程序,以提高系统在性能、价格、灵活性和可靠性方面的优点。文中详细地说明了控制程序的设计方法、程序流程图和硬件线路。 This article describes the NC unit of a wire cutting machine which is made up of a small professor of single-board machine. The main reason of using a single board machine is low price, small size, light weight and easy implementation of a large number of logic operations, The machine is converted from hardware control to software control, with the result that the circuit of the analog network becomes a single-board computer program to improve the system’s advantages in terms of performance, price, flexibility and reliability. The paper describes in detail the design method of control program, program flow chart and hardware circuit.