High frequency precision harmonic reducer

Abstract

The invention provides a high frequency precision harmonic reducer. A flexible wheel in a process of being engaged to a cam can counteract and eliminate corresponding vibration, so that vibration of the whole reducer is alleviated, the service life of the whole reducer is prolonged, the noise of the whole reducer is reduced, and the whole reducer is more stable in transmission, more full to engageand improves the precise transmission ability. The high frequency precision harmonic reducer comprises a wave generator, the flexible wheel and a rigid wheel. The flexible wheel comprises a flexibleinner gear, an output flange and a radial connecting part. The wave generator is arranged in an inner mounting cavity of the flexible inner gear. The wave generator comprises an input shaft end and acam. Flexible bearings are annularly distributed between the outer annular circumferential surface of the cam and the inner annular circumferential surface of the flexible inner gear, the cam of the wave generator is specifically of a N-convex structure, N convex ring surfaces are annularly distributed on the outer annular circumference of the cam uniformly, N is a natural number greater than or equal to 2, a progressive transitional annular surface is arranged between two adjacent convex ring surfaces, and the gear part of the flexible inner gear is in engaged connection to a corresponding outer gear of the rigid wheel.

Description

technical field [0001] The invention relates to the technical field of harmonic reducers, in particular to a high-frequency precision harmonic reducer. Background technique [0002] Harmonic reducers have been widely used in electronics, aerospace, robotics and other industries due to their advantages of high load capacity, large transmission ratio, small size, light weight, stable transmission and high transmission precision. [0003] In the existing harmonic reducer, when the wave generator is installed in the internal gear, the internal gear is forced to deform elastically and become elliptical, thereby generating a secondary frequency and producing the so-called two staggered tooth movements, thereby realizing active wave generation The motion transmission of the device and the flexible spline. [0004] However, in the existing harmonic reducer structure, due to the small meshing contact surface between the teeth and the eating surface during the transmission process, t...

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Problems solved by technology

[0006] Since the wave generator rotates once, there will be at least two staggered tooth movements, or even more than three staggered tooth movements, the vibration during the transmission process will be higher than the frequency of the previous harmonic reducer, and then the wave will be generated. The contact frequency between the convex structure of the cam of the device and the inner surface of the ring gear of the flexspline is high. The flange of the existing flexspline only connects the axial inner end of the ring cloth tooth structure of the flexspline through a radial thin wall. In order to reduce the vibration caused by high-frequency contact, the vibration of the entire harmonic reducer is relatively large and cannot be used for precision transmission, which hinders the development of high-frequency harmonic reducer

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