1. The dial indicator corrects the correct backlash.
2. Adjust the tightness of the main inserts of each axis, and observe the system load to adjust to the best state.
3. Check the condition of the bearing and replace it in time if it is damaged.
4. Marble square, ballbar test the geometric accuracy of each item, such as deviation correction.
5. Repair the accuracy of the spindle inner hole and the clearance of the spindle bearing. If it cannot be repaired, replace it in time.
6. Adjust the servo position loop, speed loop gain, load inertia ratio, machining accuracy coefficient, acceleration and deceleration time constant.
7. Optimize and adjust the programming process.
8. With the help of laser interferometer, the screw gap compensation is carried out.