CYCLOIDAL NEEDLE GEAR SPEED REDUCER AND INDUSTRIAL ROBOT

摘要

A cycloidal needle gear speed reducer and an industrial robot. The cycloidal needle gear speed reducer (100) comprises: a first cycloidal structure (10) and a second cycloidal structure (20) which are provided axially; an eccentric shaft (30) having a first eccentric part (31) and a second eccentric part (32) which are provided axially, the first eccentric part (31) and the second eccentric part (32) having opposite eccentric phases and the same eccentricity, the first cycloidal structure (10) being sleeved on the first eccentric part (31), and the second cycloidal structure (20) being sleeved on the second eccentric part (32); and a connecting piece (40) for connecting a first cycloidal disk (11) in the first cycloidal structure (10) and a second cycloidal disk (21) in the second cycloidal structure (20). According to the cycloidal needle gear speed reducer (100), dynamic balance of a cycloidal needle gear speed reducer can be improved, and an acting force applied on an eccentric shaft is reduced. An industrial robot, of which the cycloidal needle gear speed reducer (100) is fixedly mounted between a power source and an actuating mechanism.