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 the components to drop, resulting in failure or even damage to the components.
  3. Regularly clean the cooling and ventilation system of the CNC cabinet
  4. Regularly monitor the power grid voltage of the CNC system: the power grid voltage range is 85% to 110% of the rated value.
  5. Replace the memory battery regularly
  6. Maintenance of the CNC system when it is not in use for a long time: often power up the CNC system or make the CNC machine tool run the temperature machine program.
  7. Maintenance of spare circuit boards, maintenance of mechanical components

Maintenance of mechanical parts

  1. Maintenance of tool magazine and tool changer manipulator

1) When loading knives into the tool magazine manually, make sure that they are installed in place and check whether the locking on the tool holder is reliable.;

2) It is strictly forbidden to load overweight and long tools into the tool magazine to prevent the manipulator from dropping the tool or colliding with the workpiece, fixture, etc. when changing the tool.;

3) The method of selecting tools in sequence must pay attention to whether the order in which the tools are placed on the tool magazine is correct.Other tool selection methods should also pay attention to whether the changed tool number is the same as the required tool to prevent accidents caused by changing the wrong tool.;

4) Pay attention to keep the tool holder and tool sleeve clean;

5) Always check whether the zero return position of the tool magazine is correct, check whether the position of the tool change point of the machine tool spindle 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 operated by air first, and check whether the work of each part is normal, especially whether the stroke switch and solenoid valve can operate normally.

  1. Maintenance of ball screw pairs

1) Regularly check and adjust the axial clearance of the screw nut pair to ensure the accuracy and axial stiffness of the reverse transmission.;

2) Regularly check whether the connection between the screw support and the bed is loose and whether the support bearing is damaged.If you have the above problems, tighten the loose parts in time and replace the support bearings.;

3) For ball screws with grease, clean the old grease on the screw every six months and replace it with new grease.Ball screws lubricated with lubricating oil, refuel once a day before the machine tool works;

4) Pay attention to avoid hard dust or chips from entering the screw protective cover and hitting the protective cover during work. The protective device should be replaced in time if it is damaged.

  1. Maintenance of the main transmission chain

1) Regularly adjust the tightness of the spindle drive belt;

2) Prevent various impurities from entering the fuel tank.Replace the 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.

  1. Maintenance of hydraulic system

1) Filter or replace the oil regularly;

2) Control the temperature of the oil in the hydraulic system;

3) Prevent leakage of hydraulic system;

4) Regularly check and clean the fuel tank and pipeline;

5) Implement a daily point inspection system.

  1. Maintenance of pneumatic system

1) Remove impurities and moisture from compressed air;

2) Check the oil supply of the oil mist device in the system;

3) Maintain the tightness of the system;

4) Pay attention to adjusting the working pressure;

5) Clean or replace pneumatic components and filter elements;

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