Bilateral two-stage internal engagement biarc bevel gear nutation speed reducer and working method

Abstract

The invention relates to a bilateral two-stage internal engagement biarc bevel gear nutation speed reducer which comprises a box. An input shaft is arranged at one end of the box in a penetrating manner. The shaft section, located in the box, of the input shaft is provided with a nutation sleeve. A variable-speed biarc bevel gear is connected to the nutation sleeve through a first bearing. A balance biarc bevel gear is further connected to the nutation sleeve through a second bearing. An output biarc bevel gear and a fixed biarc bevel gear are arranged at the other end of the box in a penetrating manner. The output biarc bevel gear is connected with the fixed biarc bevel gear through a third bearing. The variable-speed biarc bevel gear is in transmission engagement with the output biarc bevel gear, the balance biarc bevel gear is in transmission engagement with the fixed biarc bevel gear, and the two engagement points appear at the same time and are located on the two sides of the input shaft. The invention further relates to a working method of the bilateral two-stage internal engagement biarc bevel gear nutation speed reducer. The bilateral two-stage internal engagement biarc bevel gear nutation speed reducer is reasonable in structural design, efficient and convenient and fast to operate.

Description

technical field [0001] The invention relates to a double-sided double-stage internal meshing double arc bevel gear nutation reducer and a 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 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...

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 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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