Maintenance of CNC lathes:

To choose the appropriate use environment

CNC woodworking lathes must be installed in strict accordance with the installation conditions and requirements specified in the lathe manual. If economic conditions permit, it should be installed in isolation and better maintained at a later stage.

At the same time, its use environment should take into account: temperature, humidity, vibration, power supply voltage, frequency and interference. Only by doing this can the maintenance requirements be met.

Equipped with professional CNC personnel to operate

Professional operators know how to operate correctly to avoid unnecessary hardware damage to the lathe due to operational mistakes, and these personnel are familiar with the mechanical parts of the machine tool, numerical control systems, strong electrical equipment, hydraulic pressure, air pressure and other parts and the use environment, processing conditions, etc.

Regularly check the hardware of the CNC system

Have a maintenance electrician with operating experience inspect the vehicle once a year on a regular basis. Detect the output voltage of the power module, the reference voltage of the numerical control unit, etc., and clean up the dust in time; check whether each part is loose; replace or repair the relevant parts, etc.

Common problems maintenance of CNC lathes:

What should I do if the knife holder does not turn?

When the tool holder does not rotate, the operator should first determine the correctness of the operation. If it is in the manual state, the system should be placed in the manual mode; if it occurs during the execution of the program, the correctness of the program should be checked first. sex. If the above situation is excluded and the problem still exists, there are the following possibilities, which can be checked one by one.

• The phase sequence of the mains incoming power supply is reversed. The electrical phase sequence of the entire machine tool has been debugged and consistent before leaving the factory. When the phase sequence is wrong, please change the phase sequence of the main incoming power supply, and only change the phase sequence of the main incoming power supply. Also, check whether the incoming line voltage is normal.

• The circuit breaker of the tool post has tripped. When the problem persists, open the electrical control cabinet behind the machine and check if the circuit breaker QF2 has tripped. Push the circuit breaker QF2 switch on.

• The contactor does not operate. The contactors that control the tool holder are KM7 and KM8. If KM7 does not act, the tool magazine will not rotate forward, and if KM8 does not act, the tool magazine will not rotate in reverse. Check whether the contactor is normal, whether there is peculiar smell, and whether the mechanism is stuck. Whether the contactor coil signal is correct, and whether the relay controlling the contactor coil signal is faulty.

What should I do if the spindle does not rotate?

When the operator issues a command to rotate the spindle, the spindle does not rotate. At this time, it should be judged first whether the spindle motor has been rotated. If the main motor has been rotated, but the spindle does not rotate, it should be that the gear shift of the gearbox is not in the position. In this case, the operator should stop the rotation of the spindle motor first, and then re-gear when the motor stops stably. It should be noted that every time the gear is shifted, it should be accurately in place, so that the inner gears of the gearbox can fit tightly, otherwise the gears will be seriously worn and affect the use.

If the spindle motor does not turn, it can be considered an electrical reason. Generally, there are two forms of control of the machine tool to the spindle:

• Ordinary motor, simply controlled by contactor. If the machine tool is an ordinary motor and the spindle does not rotate, first check to see if the operator's operation is correct. After confirming that it is correct, the maintenance personnel can open the electric control cabinet, find the air circuit breaker QF2, and check whether the circuit breaker has tripped.

• The frequency conversion motor is controlled by the frequency converter. If the machine tool is a variable frequency motor, you can see that there is a frequency converter that controls the spindle motor in the electric control cabinet. The parameter setting of the inverter, the signal input and output, can control and affect the speed of the spindle motor. For the specific inverter settings, you should carefully refer to the "Inverter Manual" supplied with the machine.

Conclusion

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