When the CNC lathe is first put into use, it must return to the reference point when restarting after the system is powered off. After manually moving each axis outside the non-interference zone, return each axis to the reference point. Otherwise, a collision may occur. So, after processing every day, move the axis of the machine tool to a safe position. At this point, there is no need to return after operating again or cutting off the power again.
Malfunctions caused by external hardware operations are common faults in CNC repairs. It is usually caused by problems with detection switches, hydraulic systems, pneumatic systems, electrical actuators, and mechanical devices. Some of these types of faults can be traced back to the cause through alarm information. For general CNC systems, there are fault diagnosis functions or information alarms. CNC lathe maintenance personnel can use these information methods to narrow down the scope of diagnosis. Some faults may have alarm information displayed, but they cannot reflect the true cause of the fault. At this point, it is necessary to analyze and solve the problem based on the alarm information and fault symptoms.
For the repair of CNC lathes, it is important to identify problems. Especially external faults of CNC machine tools. Sometimes the diagnostic process can be complex, but once the problem is identified, it is relatively easy to solve. The diagnosis of external faults should follow the following two principles. Firstly, it is necessary to master the working principle and action sequence of the machine tool proficiently. Secondly, one should be able to utilize PLC ladder diagrams. The status display function of the NC system or the monitoring of the operating status of the PLC by an external programmer. Machine tool technology is developing, and CNC machine tool maintenance technology is also following suit. If artificial intelligence develops well in the future, I hope maintenance will be more convenient and simple.