Fault analysis and maintenance of electrical systems of CNC machine tools
As a part of automated machine tools, CNC machine tools are widely used in all walks of life. CNC machine tool electrical system is an important part of CNC machine tool, and it also occupies an important position in its normal operation. Fault analysis and maintenance of CNC machine tool electrical system is essential to ensure its normal operation.
The electrical system of CNC machine tools mainly includes power system, servo system, positioning system, data system and control system. The main unit of each system is composed of hardware and software. Fault diagnosis, should start from the hardware part, to identify the fault parts and the possible causes of the fault, and then go to the software part. During fault diagnosis, the operating personnel should grasp the device conditions in real time and do fault inference. There are mainly the following common faults of CNC machine tools electrical system.
1. The servo motor does not work and there is an abnormal sound. In this case, the source of the fault may be that the capacitor is damaged, the servo motor is burned or the connection of the circuit is not good.
2. The drive does not work properly and there is a vibration or abnormal noise. This is mainly caused by the malfunction of the motor, the overload of the motor, the malfunction of the power supply or the short circuit in the control circuit.
3. The system is out of control. In this case, it is necessary to check whether the system parameters are properly set, the equipment is properly powered, the cable is connected correctly and whether there is any problem with the control cabinet.
4. Data system fault. This is mainly caused by the instability of the computer program, invalidation of the parameters, or errors in the communication line.
After the analysis is completed, the equipment should be tested to verify whether the fault is eliminated. If there are still faults, the fault diagnosis should be resumed, and the faulty parts should be replaced and maintained in time, so as to ensure the normal operation of the electrical system of CNC machine tool.
In CNC machine tool maintenance work, the maintenance personnel should always grasp and update the fault information of CNC machine tools, find out the reasons of common faults and take targeted maintenance measures. Moreover, it is necessary to record and organize the maintenance information of CNC machine tools in time, and provide reference data for the maintenance and repair of CNC machine tools in the future. Therefore, effective fault analysis and maintenance measures should be taken to ensure the normal operation of the electrical system of CNC machine tool.
