The maintenance of CNC deep hole drilling and boring machine covers multiple aspects, with specific details as follows:

　　1、 Daily cleaning and inspection

　　Cleaning the machine tool: Regularly wipe the surface, cover, and accessories of the machine tool to maintain cleanliness inside and outside, without rust or oil stains. Special attention should be paid to wiping the long lead screw, light bar, gear rack and other components to ensure that there are no debris or dust accumulation.

　　Check the guide rail surface: Before use, check whether there are any abnormalities on the guide rail surface. If there are burrs, they need to be removed and the gap between the plug iron and the pressure plate adjusted.

　　Check the electrical system: Check whether the wires, cables, and connectors are loose or damaged, ensure that the components inside the electrical control cabinet are working properly, and there are no overheating or abnormal phenomena. Wipe the motor and electrical box to keep the inside and outside clean.

　　2、 Lubrication and cooling system maintenance

　　Lubrication of guide rails and lead screws: According to the machine manual requirements, regularly lubricate the moving parts such as guide rails and lead screws to ensure good lubrication status.

　　Check the oil circuit: Regularly check whether the lubrication oil circuit and oil holes are blocked, to ensure that the oil circuit is unobstructed.

　　Maintain the cooling system: Check the coolant level and cleanliness to ensure that the cooling system is working properly. Regularly replace the coolant to prevent blockage and corrosion. Clean the cooling pump, cooling box, pipelines, and valves to ensure that there is no leakage of materials.

　　3、 Tool and fixture management

　　Check the tool: Regularly check the wear of the tool, and if necessary, replace or grind the tool in a timely manner.

　　Check the fixture: Ensure that the fixture is securely clamped without looseness or damage.

　　4、 Maintenance of Electrical and Hydraulic Systems

　　Electrical system maintenance: Check the wiring and connectors of the electrical system to ensure the normal operation of electrical components. Check for damage to cables, switches, motors, and other components, and repair or replace as necessary.

　　Hydraulic system maintenance: Regularly check the oil level and quality of the hydraulic system, and replace the hydraulic oil in a timely manner if necessary. At the same time, check the viscosity and cleanliness of the working fluid in the hydraulic station to ensure the normal operation of the hydraulic system. Clean the oil line, oil felt, and filter to ensure smooth oil flow.

　　5、 Machine tool accuracy inspection and adjustment

　　Check the accuracy of the machine tool: Regularly check the various accuracies of the machine tool, such as spindle perpendicularity, guide rail parallelism, etc. If accuracy deviation is found, adjust and repair it in a timely manner.

　　In summary, the maintenance of deep hole drilling and boring machine includes daily cleaning and inspection, lubrication and cooling system maintenance, tool and fixture management, electrical and hydraulic system maintenance, machine tool accuracy inspection and adjustment, and many other aspects. Following these maintenance contents can ensure the normal operation of CNC deep hole drilling and boring machine, extend the service life of equipment, and improve processing quality and efficiency.