Arc surface two-time enveloping crown gear nutation transmission device

Abstract

The invention discloses an arc surface two-time enveloping crown gear nutation transmission device. The arc surface two-time enveloping crown gear nutation transmission device is characterized by comprising a crossed roller bearing, a right end crown gear, a left end crown gear and a nutation crown gear. The crossed roller bearing comprises an inner ring and an outer ring which are in rolling connection, the inner ring is fixedly connected with the left end crown gear, and the outer ring is fixedly connected with the right end crown gear. The nutation crown gear is arranged between the right end crown gear and the left end crown gear, a tooth surface of the left end crown gear and a left tooth surface of the nutation crown gear form a left-side small tooth difference nutation conjugate meshing pair, and a tooth surface of the right end crown gear and a right tooth surface of the nutation crown gear form a right-side small tooth difference nutation conjugate meshing pair. The crown gears disclosed by the invention have continuous tooth surfaces which all participates in meshing, the abrasion of the tooth surfaces can be reduced, a lubricating oil film is easy to form, and the transmission efficiency of the arc surface two-time enveloping crown gear nutation transmission device is improved.

Description

technical field [0001] The invention relates to the technical field of gear transmission, in particular to a nutating transmission device of an arcuate secondary enveloping crown gear. Background technique [0002] At present, the traditional nutating transmission devices mostly use the meshing pairs of involute bevel gears, bevel pinwheels, rolling cone movable teeth, and double-arc spiral bevel gears. Due to the support of multiple pairs of bearings, the overall size is large and the structure is complex, which is not conducive to the development and application of lightweight and miniaturization. Secondly, there is a single installation method, only one-sided input and output, inflexible use, and poor versatility. Third, the secondary transmission has the problem of one-sided meshing of gears, and the inertial force generated by the nutating motion of the gears is not easy to offset, resulting in serious vibration and impact. , resulting in reduced service life and poor ...

AI Technical Summary

Problems solved by technology

Due to the support of multiple pairs of bearings, the overall size is large and the structure is complex, which is not conducive to the development and application of lightweight and miniaturization

Secondly, there is a single installation method, only one-sided input and output, inflexible use, and poor versatility. Third, the secondary transmission has the problem of one-sided meshing of gears, and the inertial force generated by the nutating motion of the gears is not easy to offset, resulting in serious vibration and impact. , resulting in reduced service life and poor reliability. Finally, there are problems of high tooth height and small modulus, resulting in tooth root bending and insufficient tooth surface contact strength.

[0003] Aiming at the above problems, a crown gear nutating transmission device was invented, which adopted a new type of crown gear nutating conjugate meshing pair to solve the problems of excessive overall size, input and output on one side, and vibration and impact of meshing on the same side, and can realize "input at the left end, Right end output", "right end input, left end output" two modes of use, and has the advantages of continuous tooth surface, axial backlash elimination, double-sided meshing, multi-line contact, etc., which is beneficial to reduce tooth surface wear and backlash, and improve smooth movement performance and carrying capacity

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