SCREWTECH Ball Screw Application and Problem Case Study

The Precision Ball Screw is qualified for static accuracy inspection after being assembled on the CNC lathe, but the axial runout of the precision Ball Screw is seriously out of tolerance after re-commissioning or after a period of use by the user, which affects the machining accuracy of the machine tool and thus affects In order to improve the quality of the products produced, the equipment needs to be repaired. The precision ball screw is an important precision component on the numerical control equipment. Small torque drive for servo motors.

When assembling the ball screw, we should not only ensure the parallelism of the ball screw and the table, that is, the horizontal and vertical directions, the coaxiality between the Bearing seats at both ends and the nut, but also the rotation accuracy of the ball screw itself. , that is, radial runout and axial runout. Because the precision requirements of CNC equipment are much higher than that of ordinary machine tools, generally at the micron level, the assembly process and accuracy inspection are very strict, and the technical requirements for assembly workers are also relatively high.

Generally, there are quality specialists to check the quality and carry out the precision inspection of the finished ball screw. For slender shaft parts, such as machine tool ball screws, etc., it is best to store them vertically to avoid affecting the accuracy. Or put it in a special packing box, although it is placed horizontally, it will not affect the accuracy of the ball screw. It is necessary to avoid some abnormal placement methods such as oblique placement. If there is a problem with the ball screw during use, it should be repaired and solved as soon as possible to avoid the expansion of the problem and cause greater adverse effects. For the use of delicate precision products, we should also pay more attention to the details.