Adjustment of Machining Accuracy of CNC Machining Center

The machining accuracy of the CNC Machining center is directly related to the accuracy of the machining center machine tool. After using the machine tool for several years, some users find that there will be errors in the accuracy of the CNC machined parts processed. What should we do when this happens?

Let's talk about several reasons that affect the accuracy of the CNC machining center:

1. XYZ axis backlash compensation is incorrect.
2. XYZ loose towards main insert.
3. XYZ bearing is damaged.
4. Airframe mechanical geometric accuracy deviation.
5. Spindle axial and radial play.
6. Improper adjustment of system servo parameters and processing parameters.
7. Error in customer programming.
8. XYZ axis screw, nut wear.

1. Correct backlash with a dial indicator.
2. Adjust the tightness of the main inserts of each axis, observe the system load and adjust it to a good state.
3. Detect the condition of the bearing, and replace it in time if the spindle is found to be abnormal or damaged.
4. Use marble squares and ballbars to detect the geometric accuracy of each item, if any deviation is found, it should be corrected.
5. Measure the accuracy of the inner hole of the spindle, and check whether the spindle bearing has movement. If the movement gap is too large, it should be replaced in time.
6. Adjust servo position loop, speed loop gain, load inertia ratio, machining accuracy coefficient, acceleration and deceleration time constant.
7. Professional optimization, adjust the programming process.
8. The screw gap compensation is carried out with the aid of a laser interferometer under conditions.

It is believed that through this series of inspection and adjustment, the accuracy of the machine tool will remain intact. The Precision Machining Parts can also be ensured.