What are the reasons for the unstable machining accuracy of CNC lathes?

There are many reasons for the instability of CNC lathe processing accuracy, as long as we find specific reasons, we can seek the corresponding solution, the following simple introduction of CNC lathe processing accuracy instability of several reasons, and the corresponding solution, for user reference only.

1, the size of the workpiece is correct, but the surface finish is poor, resulting in damage to the tip, the tip is not sharp, CNC lathe resonance, unstable placement, lathe crawling, poor processing technology will lead to CNC lathe processing accuracy instability.

Solution: in the nc lathe uneven position or resonance position, should be adjusted horizontal position, in order to lay its foundation conditions.

2, the driving phase lamp is normal, but the size of the workpiece is large and small.

Because the CNC lathe tool rest for a long time operation, screw and bearing position appears certain wear, the tool rest repeated positioning accuracy is used for a long time, in the process of use there is a deviation. The trolley may return to the exact starting point of the machining each time, but the size of the workpiece is still changing.

Solution: at this point, dial indicator should be used at the bottom of the tool rest, through the system to edit the shielding loop program. Check the repeated positioning accuracy of the tool rest, adjust the clearance of the screw, and replace the bearing. And also use a dial meter to check the repeated positioning accuracy of the tool bar.

3, the workpiece taper is larger, the horizontal position of the CNC lathe adjustment is not appropriate.

In the turning of the long shaft, because the materials used are usually harder, resulting in a deeper tool, resulting in the scrap of the tool. Solution: select reasonable processing method, appropriate cutting dosage, avoid tool forced damage, adjust its tailstock.

There is a difference between the tail casing and the spindle. Solution: use a level to adjust the level of the CNC lathe, and then fix the CNC lathe, improve its toughness.

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