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CNC machine tool maintenance regulations

Maintenance of CNC system
1. Strictly abide by operating procedures and daily maintenance systems
2. Prevent dust from entering the CNC device: Floating dust and metal powder can easily cause the insulation resistance between components to decrease, resulting in malfunction or even damage to the components.
3. Clean the cooling and ventilation system of the CNC cabinet regularly
4. Frequently monitor the grid voltage of the CNC system: the grid voltage ranges from 85% to 110% of the rated value.
5. Regularly replace the memory battery
6. Maintenance of the CNC system when it is not in use for a long time: frequently power on the CNC system or run the CNC machine tool through the warm-up program.
7. Maintenance of spare circuit boards and maintenance of mechanical components
Maintenance of mechanical components
1. Maintenance of tool magazine and tool changing robot
1) When manually loading a knife into the tool magazine, make sure it is installed in place and check whether the locking on the tool holder is reliable;
2) It is strictly prohibited to load overweight and overlong tools into the tool magazine to prevent the tool from falling or the tool from colliding with the workpiece, fixture, etc. when the manipulator changes the tool;
3) When using the sequential tool selection method, you must pay attention to whether the order of placing the tools on the tool magazine is correct. In other tool selection methods, you should also pay attention to whether the tool number you change is consistent with the required tool to prevent accidents caused by changing the wrong tool;
4) Pay attention to keeping the tool handle and knife sleeve clean;
5) Always check whether the zero return position of the tool magazine is correct, check whether the position of the machine tool spindle returning to the tool change point is in place, and adjust it in time, otherwise the tool change action cannot be completed;
6) When starting up, the tool magazine and manipulator should be run dry first, and check whether all parts are working normally, especially whether the travel switches and solenoid valves can operate normally.
2. Maintenance of ball screw pair
1) Regularly check and adjust the axial clearance of the screw nut pair to ensure reverse transmission accuracy and axial stiffness;
2) Regularly check whether the connection between the screw support and the machine bed is loose and whether the support bearing is damaged. If there are any of the above problems, tighten the loose parts in time and replace the support bearings;
3) For ball screws that use grease, clean the old grease on the screw once every six months and replace it with new grease. The ball screw lubricated with lubricating oil should be refueled once a day before machine tool operation;
4) Pay attention to avoid hard dust or chips from entering the screw guard and hitting the guard during work. If the protective device is damaged, it must be replaced in time.
3. Maintenance of main transmission chain
1) Regularly adjust the tightness of the spindle drive belt;
2) Prevent various impurities from entering the fuel tank. Change lubricating oil once a year;
3) Keep the connection between the spindle and the tool holder clean. The displacement of the hydraulic cylinder and piston needs to be adjusted in time;
4) Adjust the counterweight in time.
4. Hydraulic system maintenance
1) Filter or replace the oil regularly;
2) Control the temperature of the oil in the hydraulic system;
3) Prevent hydraulic system leakage;
4) Regularly check and clean the fuel tank and pipelines;
5) Implement daily point inspection system.
5. Pneumatic system maintenance
1) Remove impurities and moisture from compressed air;
2) Check the oil supply amount of the lubricator in the system;
3) Maintain the sealing of the system;
4) Pay attention to regulating work pressure;
5) Clean or replace pneumatic components and filter elements;

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