As we all know, the machining center servo system is to provide power to the machine tool system, no servo system machining center can not be processed on the workpiece, so the servo system in the machining center is very important, servo system a failure, the entire processing production to stop, today I will introduce the machining center servo system common failures what?
Machining center servo system failure form including the speed unit in the CNC on the alarm indicator and fuse blown and a variety of protection with a jump switch and other alarms. The meaning of the alarm indicator varies with the differences in the design of the speed control unit, there are generally the following.
1, high current causes the machine alarm, the occurrence of high current alarm in general there are two possibilities, is the machining center CNC speed control unit on the power drive element damage and short circuit caused by high current alarm.
2, high voltage will also lead to machine alarms, the occurrence of high voltage alarms generally have three possibilities, may be machining center CNC input voltage exceeds ten percent of the rated value, or servo motor inside the insulation performance decline, or machining center operation speed control unit line caused by high voltage.
3, the voltage is too low to cause the machine alarm, machining center the chances of this happening is rare, the occurrence of this situation may be the input voltage is lower than the rated value of eighty-five percent, or poor power supply connection caused.
4, the detection of speed feedback line break caused by the alarm, the occurrence of this is a false alarm, because the airport can be no problem, and detection feedback system problems, the occurrence of such alarms are mostly machining center CNC servo motor speed feedback line break or its detection feedback line poor contact caused by.
5, the protection switch to start the alarm, the protection switch is a device to protect the machine tool, such as large voltage will burn some components and some machine tools can not control the emergency measures, when encountering these situations the protection switch will start to avoid unnecessary component damage, similar to the safety stop and so on.
6, overload alarm, the cause of overload alarm machining center CNC mechanical load is not normal, or speed control unit on the motor current limit value is set too low. The permanent magnet on the permanent magnet motor will also cause overload alarm, if the machining center CNC motor without brake does not turn by hand at no load or it is hard to rotate the shaft, that means the permanent magnet all off.
7、The fuse on the CNC speed control unit of the machining center is blown or the circuit breaker is tripped.