How to Adjust the Accuracy of Planetary Reducer

- Jan 12, 2021-

Friction occur occasionally during usage of the planetary reducers. This can cause changes in the size, shape and surface quality of related parts, causing wear and increasing the coordination gap between related parts. So how should the accuracy of the planetary reducer be adjusted? Gigager engineer will answer you in below details.


1. Adjustment of the guide precision of the planetary reducer

The guiding accuracy of the guide rail is the accuracy of the movement trajectory when the moving parts of the mechanical equipment move along the guide rail. Except for types, combination and size of the guide rail selected in the design, the main factors affecting the guide rail accuracy include:

A. the suitability of the guide gap.

B. the rigidity of the guide rail itself.

C. the geometric accuracy of the guide rail.


2. Adjust the gap between the nut and the worm screw lifter of the planetary reducer

The transmission chain in general mechanical equipment is composed of gears & gears, gears & racks, worm wheels & worms, screws & nuts. Spiral lifting nut drive is one common mechanism to realize linear motion. It is difficult to realize motion without the gap between screws and nuts. Especially after a period of use, the gap of the equipment will increase due to wear and tear, and the normal operation of the equipment will be affected. Therefore, it need to eliminate the gap between the nuts during equipment maintenance.


3. Adjust the rotation accuracy of the main shaft of the planetary reducer

The accuracy of the spindle rotation means the radial runout, circumferential runout and axial movement of the working parts at the front of the spindle. Under the premise that the machining error of the spindle itself meets the requirements, the bearing determines the rotation accuracy of the planetary reducer. The key to adjusting the spindle rotation accuracy is to adjust the bearing clearance. Maintaining reasonable bearing clearance is of great significance to the performance of the spindle components and the life of the bearing. For rolling bearings, when there is a large gap, the load is not only concentrated in the force direction of the rolling bearing, but also serious stress concentration will occur at the contact between the inner and outer ring raceways of the bearing. Shortening the life of the bearing also causes the drift of the spindle centerline, which is likely to cause vibration of the spindle components. Therefore, the adjustment of the rolling bearing must be preloaded, so that the internal interference of the bearing causes the elastic deformation when the rolling bearing contacts the inner and outer ring raceways, thereby improving the rigidity of the bearing.