Planet gear tooth side gap adjusting mechanism

Abstract

The invention discloses a planet gear tooth side gap adjusting mechanism. A planet carrier of the mechanism can adjust the distance of two pairs of adjacent planet gear shafts. A spoke type planet carrier hub of the mechanism is slotted in the radial direction, and screws are arranged in the direction vertically intersecting with a groove. Elastic deformation of the spoke type planet carrier happens through tightening of the screws, accordingly the distance between every two adjacent planet gear shafts is reduced, so that the tooth side gap between every two adjacent planet gears and a sun gear is reduced in the opposite direction, when the sun gear rotates forwards or reversely, bearing is conducted through different pairs of planet gears, and the gear return error is greatly reduced on the premise that the meshing gap of the pair of gears is guaranteed. By means of the planet gear tooth side gap adjusting mechanism, the planet gear speed reducer tooth side gap adjustment is more convenient, and meanwhile the transmission precision of a speed reducer is improved on the premise of the equal component machining precision.

Description

technical field [0001] The invention relates to the technical field of planetary gear tooth side clearance adjustment, and more specifically relates to a planetary gear backlash adjustment mechanism for reducing the phase angle error of an output shaft during forward and reverse rotation of a planetary gear reducer. Background technique [0002] The reducer is the power transmission system of the rotary mechanism, which is responsible for the power transmission between the rotary power source and the actuator and plays the role of deceleration and torque increase. According to the transmission characteristics that the reducer needs to achieve, especially in the case of servo motor drive and the need to ensure the accuracy of the forward and reverse phase angles, the transmission phase angle error is usually reduced by strictly controlling the gear backlash. However, the higher the processing accuracy, the more difficult the processing, the lower the yield, and the gears that...

AI Technical Summary

Problems solved by technology

However, the higher the processing accuracy, the more difficult the processing, the lower the yield, and the wear of the long-term used gears will lead to the increase of the backlash, which cannot be adjusted in the later stage and can only be scrapped, which seriously weakens the service life of the product.

In the case of servo motors, the increase in the phase angle error of the reducer will seriously affect the transmission accuracy of the drive mechanism of the servo motor, and even cause the equipment to fail to work normally.

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