Three stage planetary gear reducer

Abstract

The invention discloses a three stage planetary gear reducer. The reducer comprises an input flange. An inner gear ring is connected with the input flange through a first screw. An output flange is connected with the inner gear ring through a second screw. A transitional flange is placed between the input flange and the inner gear ring. An input shaft is placed in the transitional flange through an input bearing. One end of the input shaft protrudes into the input flange. The other end of the input shaft protrudes into the inner gear ring to be connected with a one stage sun gear shaft. A one stage sun gear is mounted on the one stage sun gear shaft. The one stage sun gear shaft meshes with a plurality of one stage planetary gears. The one stage planetary gears mesh with the inner gear ring. The one stage planetary gears are placed on a one stage planetary gear pin shaft. One end of the one stage planetary gear pin shaft passes through the one stage planetary gear to be connected with a one stage planetary frame.

Description

technical field [0001] The invention relates to a reducer, in particular to a three-stage planetary gear reducer. Background technique [0002] In addition to the planetary gears in the planetary reducer can rotate around their own axis of rotation like fixed shaft gears, their rotation axis also rotates around the axis of other gears (sun gear) with the planet carrier, and the rotation around its own axis It becomes rotation, and the rotation around the axis of other gears is called revolution, just like the planets in the solar system, hence the name. It can be used in the modern robot industry, such as parallel robots or linear robots, and is often used in the field of CNC machine tools and machining centers, with a wide range of applications. Most of the current planetary reducers adopt a single-stage planetary gear structure. The single-stage planetary gear structure has a small output torque, a small application range, poor structural performance, easy damage, and fre...

AI Technical Summary

Problems solved by technology

Most of the current planetary reducers adopt a single-stage planetary gear structure. The single-stage planetary gear structure has a small output torque, a small scope of application, poor structural performance, easy damage, and frequent replacement. Driven by the pin shaft of the planetary gear to rotate in the air in the inner ring gear, because there is no support during the rotation of the planetary carrier, the rotation is unstable, and it is easy to shift and deform after a long time, resulting in the abnormal use of the planetary reducer and the service life of the reducer. Short, in addition, the existing input flange, transition flange and output flange are all connected to the inner ring gear by screws, the connection is not tight, the vibration is relatively large during the operation of the reducer, and it is easy to cause the flange and the inner ring The gap at the joint of the ring gear gradually increases, which eventually leads to misalignment of the gears of the reducer, causing the reducer to malfunction or even be scrapped

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