最近连遇相似的两例高速走丝线切割机故障,用户均以为是电气问题,实际上是机械原因,下面分别作一介绍。(1)一台DK7732线切割机,用户反映脉冲电源出故障,加工时频繁短路,切出的圆弧形状不规则。查脉冲电源短路电流正常,火花看不出问题,控制台程序能回零,步进电机无失步,钼丝无明 The recent case of similar two cases of high-speed wire cutting machine failure, the user thought it was an electrical problem, in fact, mechanical reasons, the following were introduced. (1) A DK7732 wire cutting machine, the user reflects the pulse power failure, frequent short circuit processing, cut out the arc irregular shape. Check the pulse power supply short-circuit current is normal, the spark can not see the problem, the console program can return to zero, no step out of stepper motor, molybdenum wire without Ming