Small-tooth-difference high-precision cycloid gear speed reducer

Abstract

The invention relates to a small-tooth-difference high-precision cycloid gear speed reducer which comprises an input shaft, a speed reduction mechanism and an output shaft. The speed reduction mechanism comprises a tooth ring, cycloid tooth pieces, a holder and eccentric shafts. The cycloid tooth pieces are eccentrically arranged on the input shaft through a first eccentric assembly. The holder comprises two holding end covers and connecting columns. The connecting columns are connected with and located on the holding end covers. The eccentric shafts penetrate through tooth penetrating shaft holes. A second eccentric assembly is arranged between the eccentric shafts and the tooth penetrating shaft holes of the cycloid tooth pieces. The two holding end covers are provided with cover penetrating shaft holes respectively. A third eccentric assembly is arranged between the two ends of the eccentric shafts and the cover penetrating shaft holes of the holding end covers. The cycloid gear speed reducer is small in size, all speed reduction parts can achieve close fitting, the precision of the whole speed reducer is improved, and the high transmission ratio can be achieved.

Description

technical field [0001] The invention relates to a cycloidal gear reducer with small tooth difference and high precision. Background technique [0002] The planetary reducer cycloidal pinwheel reducer used in the existing market is relatively large in size and will occupy a large space during use, especially in the cycloidal pinwheel reducer, the pendulum in the reducer The thread wheel and the needle rollers in the outer ring cooperate with each other. There is a large gap between the cycloid wheel and the needle roller, and it is impossible to achieve a tight fit. There will be some rotation gaps. Due to the existence of these rotation gaps, The long-term rotation of the cycloid reducer will affect the deceleration accuracy of the reducer. [0003] Secondly, the traditional planetary reducer cycloid reducer cannot achieve a high transmission ratio. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the deficienc...

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Problems solved by technology

[0002] The planetary reducer cycloidal pinwheel reducer used in the existing market is relatively large in size and will occupy a large space during use, especially in the cycloidal pinwheel reducer, the pendulum in the reducer The thread wheel and the needle rollers in the outer ring cooperate with each other. There is a large gap between the cycloid wheel and the needle roller, and it is impossible to achieve a tight fit. There will be some rotation gaps. Due to the existence of these rotation gaps, With the long-term rotation of the cycloid reducer, the deceleration accuracy of the reducer will be affected

[0003] Secondly, the traditional planetary reducer cycloid reducer cannot achieve a high transmission ratio

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