The large reverse error of the ball screw is a common problem with high incidence. This problem seriously affects the work progress and greatly reduces the work efficiency. At this time, it is necessary for every technician to grasp the common problems and solutions of the ball screw, and reduce the impact as much as possible.
1. What is the reason for the large reverse error of the ball screw?
1. The pre-tightening force of the ball screw is too tight or too loose;
2, the screw shaft coupling taper sleeve is loose;
3. The pre-tightening force of the screw support bearing is too tight or too loose;
4, the screw shaft sliding plate cooperation wedge iron is too tight or too loose;
5. The ball screw has large manufacturing errors or axial movement;
6. the screw shaft slide plate cooperation pressure plate is too tight or too loose;
7. Other mechanical disturbances.
Two. How to remove the wrong direction of the ball screw:
1. Adjust the pre-tightening force and check the axial movement value, so that the error is not greater than 0.015mm;
2. Re-adjust or study from the beginning to make the contact rate reach more than 70 percent . If the 0.03mm feeler gauge is not used, it is qualified;
3. Re-adjust or study from scratch;
4. It is qualified if the 0.03mm feeler gauge does not enter;
5. Repair adjustments or padding;
6. repair and adjustment;
7. Adjust to the surface of each guide rail with lubricating oil;
8. Fasten from the beginning and use a percentage to indicate the repeat test;
9. Sweep away dry and parts.
Ball screw is the most used high-precision transmission element on machine tools. Its high-precision characteristics bring unprecedented high-speed feed characteristics to machining centers. At the same time, if the operation is slightly improper, it will simply present more errors. Error analysis.
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