What is the reason for the unstable processing accuracy of CNC lathes?

There are many reasons why the machining accuracy of CNC lathes is unstable. As long as you find the specific reasons, you can find corresponding solutions. The following is a brief introduction to several reasons for the unstable machining accuracy of CNC lathes, as well as the corresponding solutions, for user reference only.

1. The size of the workpiece is correct, but the surface finish is poor, resulting in damage to the tool tip, the tool tip is not sharp, the CNC lathe resonates, the placement is unstable, the lathe crawls, and poor processing technology will lead to unstable CNC lathe processing accuracy.

Solution: When the CNC lathe is in an uneven or resonant position, the horizontal position should be adjusted to establish its basic conditions.

2. The driving light is normal, but the size of the workpiece to be processed varies.

Due to the long-term operation of the tool holder of the CNC lathe, there is certain wear and tear on the screw and bearing positions, and the repeated positioning accuracy of the tool holder deviates during use. The car may return to the exact starting position of processing every time, but the size of the workpiece being processed is still changing.

Solution: At this time, a dial indicator should be used at the bottom of the tool holder, and the system should edit the shielding ring program. Check the repeated positioning accuracy of the tool holder, adjust the screw clearance, and replace the bearings. And also use a dial indicator to check the repeat positioning accuracy of the toolbar.

3. The workpiece has large taper and CNClatheImproper horizontal position adjustment.

When turning long shafts, the materials used are usually harder and the tools are deeper, resulting in scrapped tools. Solution: Choose a reasonable processing method, appropriate cutting amount, avoid force damage to the tool, and adjust its tailstock at the same time.

The tailstock housing and spindle have different centers. Solution: Use a level to adjust the level of the CNC lathe, and then fix the CNC lathe to improve its toughness.