目前,国内数控线切割机采用的脉冲当量是1μ,而大多数控制台移位寄存器是20位,其首位是符号位。这样,在走圆时,偏差F的计算要用到2x、2y,所以实际圆弧加工的最大半径是2~(18)=262·144mm。如何在一台数控线切割机上扩大圆弧加工范围呢?我们经过研究与实践,采用了双周双步单运算加工的方法,较满意地解决了这个问题。下面对这一方法作一扼要介绍。 At present, the domestic NC WEDM pulse equivalent is 1μ, while most of the console shift register is 20, the first is the sign bit. In this way, when going round, the deviation F is calculated using 2x, 2y, so the maximum radius of the actual arc machining is 2 ~ (18) = 262 · 144mm. How to extend the range of arc machining on a CNC wire cutting machine? We have solved this problem satisfactorily by researching and practicing the method of double-cycle double-step single machining. Here’s a brief introduction to this method.