本刊读者谢于翔通过网络向本社编辑部查询:我有一台铣床,它的走刀电机产生无力现象。有负荷时转速急剧下降,每分钟约几十转。三线用万用表测量,是通的,未搭壳,不生湿。排除了电器线路和机械的原因,就电机来说,问题在哪里?谢谢！ 我刊请山西电机厂高级工程师孙学政作出分析解答,内容刊登如下: Our readers Xie Yuxiang through the network to our editorial department inquiries: I have a milling machine, the knife motor it produces weakness phenomenon. A sharp decline in speed when the load, about a few dozen revolutions per minute. Third line with a multimeter to measure, is the pass, did not take the shell, not wet. Excluded from the electrical wiring and mechanical reasons, the motor, the problem? Thank you! I asked Shanxi Electrical Machinery Factory Senior Engineer Sun Xuezheng analysis, the contents published as follows: