Novel double-sided meshing double-arc bevel gear nutation reducer and working method thereof

Abstract

The invention relates to a novel double-sided meshing double-arc bevel gear nutation reducer and a working method thereof. The novel double-sided meshing double-arc bevel gear nutation reducer comprises a box body, an input shaft arranged on the middle portion of one side of the box body in a penetrating mode, first nutation sleeves and second nutation sleeves, wherein the first nutation sleeves and the second nutation sleeves are oppositely arranged on the input shaft. The first nutation sleeve is rotatably connected with a first double-arc internal bevel gear, and the first double-arc internal bevel gear is fixedly connected with a first double-arc external bevel gear. The second nutation sleeve is rotatably connected with a second double-arc internal bevel gear, the second double-arc internal bevel gear is fixedly connected with a second double-arc external bevel gear, and the first double-arc external bevel gear meshes with the second double-arc external bevel gear. The novel double-sided meshing double-arc bevel gear nutation reducer further comprises a third double-arc external bevel gear and a fourth double-arc external bevel gear, the third double-arc external bevel gear isfixedly connected to the box body and meshes with the first double-arc internal bevel gear, and the fourth double-arc external bevel gear meshes with the second double-arc internal bevel gear. The novel double-sided meshing double-arc bevel gear nutation reducer is reasonable in structure and has the advantages of high speed ratio, high bearing capacity, small radial dimension, high precision, smooth transmission and the like.

Description

Technical field: [0001] The invention relates to a novel bilateral meshing double arc bevel gear nutation reducer and its working method. Background technique: [0002] Common nutating reducers mostly use involute tooth profile or cycloid tooth profile transmission, but the transmission efficiency of involute tooth profile is low, and problems such as tooth profile overlapping interference and radial interference are prone to occur in the nutating structure; The linear tooth shape is prone to problems such as tooth profile overcut and pin-tooth collision; planetary reducers with large speed ratios have complex structures, are difficult to manufacture and install, and are heavy in weight. The RV reducer has high requirements on precision, difficult processing and high cost, and it is difficult to transmit large torque. The existing two-stage internal meshing double-arc nutation reducer is always on the same side because the two-stage gear meshes, resulting in an increase in ...

AI Technical Summary

Problems solved by technology

[0002] Common nutating reducers mostly use involute tooth profile or cycloid tooth profile transmission, but the transmission efficiency of involute tooth profile is low, and problems such as tooth profile overlapping interference and radial interference are prone to occur in the nutating structure; The linear tooth shape is prone to problems such as tooth profile overcut and pin-tooth collision; planetary reducers with large speed ratios have complex structures, are difficult to manufacture and install, and are heavy in weight

The RV reducer has high requirements on precision, difficult processing and high cost, and it is difficult to transmit large torque

The existing two-stage internal meshing double-arc nutation reducer is always on the same side because the two-stage gear meshes, resulting in an increase in the circumferential force that cannot be offset, so that the entire box bears a large inertial force, resulting in very poor transmission. Steady, the noise also increases, and the overall service life is shortened

The existence of these problems makes it difficult for the existing nutation reducer to achieve deceleration on the robotic arm and wrist joints of the robot.

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