Some faults may occur during the use of the CNC busbar processing machine. The analysis process of the electrical fault of the bus machine is also the troubleshooting process. Therefore, some common troubleshooting methods for the electrical fault of the bus machine are as follows:
1、 Power supply: the power supply is the energy source for the normal operation of the maintenance system and even the whole machine tool. If it fails or fails, it will lose data and cause shutdown. If it is serious, it will destroy part or even all of the system
Due to sufficient power and high power grid quality in western countries, less consideration is given to the power supply design of their electrical system, which is slightly insufficient for China's power supply network with large fluctuation and high-order harmonics. In addition, some human factors will inevitably lead to faults caused by power supply
2、 Position ring fault of CNC system
1. Position ring alarm. It may be that the position measurement circuit is open; The measuring element is damaged; The interface signal established by position control does not exist, etc
2. The coordinate axis moves without command, which may be due to excessive drift; The position loop or speed loop is connected into positive feedback; Open circuit of feedback wiring; The measuring element is damaged
3、 The zero point cannot be found in the machine coordinate. It may be that the zero direction is far away from the zero point; The encoder is damaged or the wiring is open; Grating zero mark shift; The zero return deceleration switch fails
4、 The dynamic characteristics of the machine tool become worse, the machining quality of the workpiece decreases, and even the machine tool vibrates at a certain speed
One of them may be caused by excessive clearance or even serious wear of the mechanical transmission system, or insufficient lubrication or even wear of the guide rail;
For the electrical control system, the speed loop, position loop and related parameters may not be in the best matching state, and the optimization adjustment shall be carried out again after the mechanical fault is basically eliminated
5、 Occasional shutdown fault
There are two possible scenarios:
In one case, the problems in the relevant software design as mentioned above cause the shutdown fault under some specific operation and function operation combination. Generally, the machine tool will disappear when it is powered on again after the machine tool is powered off;
The other is caused by environmental conditions, such as strong interference (power grid or peripheral equipment), excessive temperature, excessive humidity, etc. this environmental factor is often ignored. For example, in the south, the machine tool is placed near the ordinary workshop or even close to the open door, the electric cabinet is opened for a long time, and there are a large number of equipment producing dust, metal chips or water mist nearby, etc
The above is about the maintenance and troubleshooting of CNC busbar processing machine. I hope it can help you. Our company operates CNC busbar processing machine. If necessary, please consult us.
