The main maintenance work of CNC lathes is crucial to ensure the normal operation of the equipment, extend its service life and ensure the processing quality. The following are the main maintenance items for CNC lathes:

1. Cleaning: Regularly clean all parts of the CNC lathe, including guide rails, ball screws, spindles, tool holding devices, etc. Remove dust, chips and lubricant residues to ensure that the machine's moving parts remain clean.

2. Lubrication system: Regularly check and replace CNC lathe lubricating oil or grease to ensure that each lubrication point is fully lubricated. This helps reduce friction, prevent parts from wearing out, and make your CNC lathe run more efficiently.

3. Adjustment of guide rails and ball screws: Check the wear degree of CNC lathe guide rails and ball screws, adjust and replace seriously worn parts in time. Ensure that the guide rail and screw maintain good coordination to ensure the positioning accuracy of the CNC lathe.

4. Tools and tool holding devices: Regularly check the wear of CNC lathe tools and replace severely worn tools in a timely manner. Check the tool clamping device to ensure the clamping force is appropriate to prevent the tool from falling off.

5. CNC system inspection: Regularly check the electrical connections and heat dissipation equipment of the CNC system. Ensure the normal operation of the CNC system and detect and repair electrical faults in a timely manner.

6. Spindle system: Check the bearings and cooling system of the CNC lathe spindle system to ensure that the spindle runs smoothly and maintains an appropriate cooling temperature.

7. Tool magazine: If the CNC lathe is equipped with a tool magazine, check the operation of the tool magazine regularly to ensure that the automatic tool change function is normal.

8. Safety system: Regularly check the safety system of CNC lathes, including emergency stop buttons, safety doors, protective covers, etc. Ensure safety equipment is working properly to provide necessary safety protection.

9. Regular maintenance plan: Develop a regular maintenance plan for CNC lathes, and conduct regular inspections and maintenance based on the usage and operating time of the CNC lathes. This helps prevent potential problems and detect and fix faults early.

10. Train maintenance personnel: Train maintenance personnel so that they understand the structure and working principles of CNC lathes and can detect and deal with common problems in a timely manner.

The above maintenance matters should be formulated according to the specific CNC lathe model, the maintenance manual provided by the manufacturer and the actual usage. Regular maintenance work helps ensure the long-term stable operation and productivity of CNC lathes.