我厂CA6140车床在工作中发生突然停止运行的故障。 检测:先查总电源以及保险和热继电器,无异常。让操作者再次起动车床,控制主轴电机的交流接触器KM1有动作,但不能自锁(见图示)。持续手按起动按钮SB1,KM1高频率弹跳仍不能稳定吸合。同时机床照明灯暗弱下来并同步频闪,停机测变压器TC1额定输出110V正常。检查各开关是否处 CA6140 lathe in our factory suddenly stops working at work. Detection: First check the total power supply and insurance and thermal relays, no exception. Allow the operator to start the lathe again, control the spindle motor AC contactor KM1 action, but not self-locking (see picture). Continue to press the start button SB1, KM1 high frequency bounce still can not be stable pull. At the same time machine lights down and faint strobe, stop measuring transformers TC1 rated output 110V normal. Check if the switches are on