9 common problems and solutions for the spindle of CNC engraving machine

In the process of using CNC engraving machine, many friends sometimes encounter some CNC engraving machine spindle failure problems. Leapion Laser today shared 9 common CNC engraving machine spindle failures and solutions.

1. The rotating sound of CNC engraving machine spindle is abnormal:

A. The drive setting is incorrect;

B. Check whether the cooling water is circulating;

C. There is a problem with the main shaft (damaged bearing);

D. If there is noise when installing the tool, it is normal, and tooling is not required to replace the tool.

2. The spindle of the CNC engraving machine is hot or noisy:

A. Check whether the cooling water is circulating;

B. Check whether there is a problem with the bearing;

C. If there is noise when the knife is installed, and no tool is normal, please change the tool.

3. The cooling water of the spindle of the CNC engraving machine does not flow:

A. Check whether the coolant pump is working normally;

B. Check whether the water flow is flowing, the water is separated from the joint of the main shaft, blow from one side to the other side of the steam gun or pierce the joint on the main shaft with a needle.

4. Motor reversal:

Check whether the motor cable has any AC end of the phase output UVW terminal.

5. The spindle does not run after the CNC engraving machine is turned on

A. It may be that the plug on the spindle is not connected well or the wire inside the plug is not in good contact, we need to check whether there is a problem with the wiring;

B. If it is confirmed that there is no problem, check whether the inverter has a signal or whether the inverter parameter setting is correct;

C. If it is confirmed that there is no problem, it may be that the stator coil of the spindle hardware has been burned out, and the coil needs to be returned to the factory for repair and replacement.

6. The spindle stops a few seconds after the CNC engraving machine starts up and runs

A. It may be that the start-up time is too short. Properly extend the acceleration time before the spindle works, and start engraving after reaching the running speed;

B. It is also possible that the current protection is caused by the lack of phase of the spindle, which requires us to check whether the connection of the spindle motor is correct;

C. In addition, if the water enters the main shaft or the water is not cooled enough, it is easy to cause hardware failure, and it needs to be returned to the factory for repair.

7. The CNC engraving machine has been turned on for a period of time, and the spindle shell is hot or smoking

A. Check whether the water circulation pipe is unobstructed;

B. Check whether the setting parameters of the inverter are correct, and reset the inverter;

C. If there is nothing wrong with these two items, it is possible that the inverter has no output voltage and the frequency is different from the rated voltage and frequency on the nameplate of the spindle. We need to check the reference frequency of the inverter.

8. The nut is loose when the spindle of the CNC engraving machine is started

Check whether the rotation direction of the spindle is wrong. If it is wrong, you need to change the rotation direction according to the mark on the spindle nameplate.

9. The main shaft is noisy or the main shaft vibrates

Basically, these problems are hardware problems. The bearings are worn out and the spindle has a big jump. It is necessary to return to the factory to replace the bearings or replace with a new spindle.

The spindle of a CNC engraving machine is a kind of electric spindle, which is mainly used in small and medium-sized engraving equipment. It has the functions of high-speed engraving, punching, and slot milling. The above briefly shared 9 common faults and solutions. If there are other faults, it is best to contact the technical department of the CNC engraving machine manufacturer or the spindle supplier to solve it.

For more information and content about CNC engraving machines, please contact Leapion Laser.