Few-tooth-difference speed reducer capable of reducing noise and wear

Abstract

The invention relates to a few-tooth-difference speed reducer capable of reducing noise and wear, and is suitable for connecting an input shaft. The few-tooth-difference speed reducer comprises a shell seat, an internal gear, an eccentric body, a pivotal part, an external gear, an output shaft, and a shock-absorbing buffer unit. The internal gear is arranged on the shell seat, and the eccentric body and the internal gear are arranged on the input shaft at intervals; the pivotal part sleeves the outer ring surface of the eccentric body, and the external gear is arranged on the outer ring surface of the eccentric body through the pivotal part in a pivoted way; the external gear and the internal gear have few tooth difference, and the output shaft and the input shaft are coaxially arranged at intervals. The shock-absorbing buffer unit comprises at least one external gear shock-absorbing piece arranged between the external gear and the pivotal part, accordingly, when the internal gear and the external gear are processed, the tolerance does not need to be excessively considered.

Description

technical field [0001] The invention relates to a reducer with small tooth difference, in particular to a reducer with small tooth difference which can reduce noise and wear. Background technique [0002] The current reducer installed in a narrow space is mainly based on a reducer with a small tooth difference, such as the reducer disclosed in US Patent US2004 / 0248688 A1, which has the characteristics of light weight, small size, large transmission ratio range, and high efficiency. . With such a design, in order to reduce the backlash and improve the running accuracy, both the internal gear and the external gear must be processed with high precision. What's more, the internal gear is embedded with multiple cylindrical external pins to achieve high-precision operation. Such a combined configuration mode is bound to be more cumbersome in processing and assembly, and will greatly increase the cost required for manufacturing. [0003] When a reducer with a small number of teet...

AI Technical Summary

Problems solved by technology

Therefore, on the premise that the accuracy does not need to be considered, the high-precision processing requirements of the existing reducer in the manufacture will undoubtedly cause problems in the manufacturing cost, but in the state of relaxing the tolerance, it will be due to the collision between each other during operation. A lot of noise is generated due to wear and tear, and it will cause a lot of wear and tear under long-term use, resulting in a reduction in the service life of the product

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