The taper ellipse problem that occurs in CNC lathe processing may be caused by a variety of factors. The following are some possible solutions:

1. Check and correct machine tool accuracy:

First, check the accuracy of the CNC lathe to ensure the parallelism of the spindle axis and the bed guide rail. If it is found that the anchor bolts and adjustment pads at the four corners of the machine tool and the middle of the bed are loose, these parts should be tightened, and the horizontal straightness of the guide rail surface and the inclination in the vertical plane should be corrected to prevent them from affecting the taper and angle of the turning outer circle. Other accuracy.

2. Check and adjust the top:

Before turning on the CNC lathe, align the rear center so that it is coaxial with the spindle axis. If the workpiece has a taper, measure the taper value first, and then adjust the moving direction and distance of the tailstock according to the value. After making a test cut, re-measure the dimensions of both ends of the workpiece to ensure that the taper has been eliminated. If the drawing requirements are not met, the tailstock needs to continue to be adjusted until the requirements are met.

3. Treatment of tool factors:

CNC lathes try to replace cutting tools with smaller rounded corners to reduce the impact of cutting tools on the shape of the workpiece.

If the workpiece protrudes long or the material is hard, consider using a live center or multiple clamping segments to reduce the deformation and vibration of the workpiece.

4. Inspection and adjustment of the clamping device:

CNC lathes should check whether the chuck and chuck claws are worn. If the wear is serious, they need to be replaced or repaired in time to ensure that the workpiece remains stable during processing.

Check whether the nose and taper of the CNC lathe spindle are worn or dirty. If so, they should be cleaned or regrinded.

If the material is long and the tail is not fixed, it may cause the tail to flicker. Make sure that the tail of the material is fixed stably.

Check whether the CNC lathe spindle bearing is loose or worn, and replace the bearing in time if necessary.

5. Program and operation optimization:

When programming CNC lathes, consider using compensation programs to correct possible taper or ellipse problems.

CNC lathe operators should be familiar with the machine tool's performance and operating procedures to ensure that the correct steps and parameters are followed for processing.

To sum up, solving the taper ellipse problem in CNC lathe processing requires starting from many aspects, including machine tool accuracy, tool selection, clamping device, spindle bearings, and procedures and operations. By carefully checking and adjusting these factors, taper ellipse problems can be effectively reduced or eliminated, and processing quality and efficiency improved. At the same time, regular maintenance and upkeep of machine tools is also an important measure to ensure processing quality.