主轴编码信号长距离传输电路的抗干扰问题是数控车床及普通车床的数控改造所必须解决的问题之一。本文简要叙述了我们在实际工作中采取的一些抗干扰措施,实用证明,这些措施是行之有效的。 Anti-interference of the long-distance transmission circuit of the spindle coding signal is one of the problems that must be solved in the numerical control transformation of CNC lathe and ordinary lathe. This article briefly describes some of the anti-interference measures that we have taken in our actual work. Practical evidence shows that these measures are effective.