Cycloidal sliding-tooth reducer

Abstract

The invention provides a novel cycloidal sliding-tooth reducer suitable for a robot joint. The cycloidal sliding-tooth reducer is composed of an input shaft, an eccentric bushing, cycloidal gears, pin gears, pin gear shells, shock wave devices, sliding teeth, sliding tooth frames, ring gears and other main parts. Power of the reducer is input through the input shaft, transmitted through the eccentric bushing, the cycloidal gears, the shock wave devices and the sliding teeth and finally output through the sliding tooth frames. Compared with RV reducers which are adopted by most existing robots, according to the cycloidal sliding-tooth reducer, gear input mechanisms and W output mechanisms of the RV reducers are omitted, and the cycloidal sliding-tooth reducer has the advantages of being small in axial size, low in weight, good in rigidity, compact in structure, capable of achieving large transmission ratio easily and the like.

Description

technical field [0001] The invention relates to the field of mechanical transmission, in particular to a robot joint reducer. . Background technique [0002] With the rapid development of my country's economy, the demand for industrial robots is increasing. According to statistics, nearly 37,000 industrial robots were sold in the Chinese market in 2013, accounting for about 1 / 5 of global sales, ranking first in the world. Robot joint reducers are the core components of industrial robots. Most of the high-precision reducers required in China come from imported products, and most of the imported products are RV reducers. [0003] The RV reducer has high requirements on materials, manufacturing and assembly, and its structure is relatively complicated. It is composed of involute cylindrical gear transmission and cycloidal pinwheel transmission. The gear transmission is in the high-speed stage, and the cycloidal pinwheel transmission is in the low-speed stage. The involute g...

AI Technical Summary

Problems solved by technology

The RV reducer is equipped with gear transmission, two or three cycloidal wheels and W output mechanism in the axial direction, so it is difficult to reduce the axial size of the RV reducer

[0006] The second is that the transmission chain is long, the requirements for manufacturing and installation are high, and it is difficult to ensure high motion accuracy

[0007] Third, it is difficult to achieve a large transmission ratio

Restricted by geometrical factors, the transmission ratio of the gear transmission in the RV reducer cannot exceed 6, so the transmission ratio of the RV reducer cannot be made too large

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