Regularly check and replace DC motor brushes

Excessive wear of the DC motor brushes will affect the performance of the motor and even cause damage to the motor. For this reason, the motor brushes should be regularly inspected and replaced. CNC milling machines, machining centers, etc., are inspected once in the first year. If the brush is replaced, let the motor run dry for a period of time, so that the surface of the brush is in good agreement with the surface of the commutator. The inspection period varies with the frequency of use of the bed, generally every six months or a year.

Replace the battery for the memory regularly

If the memory uses a CMOS RAM device, in order to keep the stored content when the CNC system is not powered on, there is a rechargeable battery maintenance circuit inside. and charge the rechargeable battery. When the power is shut down, the information in the CMOS RAM is maintained by battery power instead. Under the loyalty of one soul, even if the battery has not yet expired, the battery should be replaced once a year, so that the Hubao system can work normally. In addition, it must be noted that the replacement of the battery should be carried out under the power supply state of the CNC system, so that the stored parameters will not be lost. A number of parameters are lost, after replacing the new battery, the parameter can be re-reported and input.

Maintenance of CNC system when it is not used for a long time

In order to improve the utilization rate of the numerical control system and reduce the failure of the numerical control system, the numerical control machine tool should be used at full capacity instead of being idle for a long time. When the CNC system is idle for a long time for some reason, in order to avoid damage to the CNC system, the following two points should be noted:

① Always energize the CNC system, especially in the rainy season when the ambient temperature is high. When the machine tool is locked (the servo motor does not rotate), let the numerical control system run dry, and use the heat of the electrical parts to dissipate the moisture in the numerical control system. To ensure stable and reliable performance of electronic devices. Practice has proved that frequent energization is an effective measure to reduce the rate when the air temperature is high.

② If the feed axis and spindle of the CNC machine tool are driven by a DC motor, the brushes should be taken out from the DC motor to avoid chemical corrosion, which will cause the commutator to corrode and cause the commutation performance to deteriorate. Even damage the entire motor.

Basis for Maintenance of Spare Boards

The printed circuit board is prone to failure if it is not used for a long time, so the purchased service is regularly installed in the numerical control system and powered on for a period of time to prevent damage.

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