Improved structure of flexible wheel of harmonic reducer

Abstract

The invention relates to the technical field of high-precision reducers, and discloses an improved structure of a flexible wheel of a harmonic reducer. The improved structure comprises a rigid wheel and a wave generator; an output disk is movably sleeved with one end of an inner cavity of the rigid wheel; and eight separating strips are arranged on the front side of the output disk, are distributed on the front side of the output disk in a ring array manner and are in sector shapes. According to the improved structure, the traditional flexible wheel is improved to comprise the output disk, theseparating strips and flexible mechanisms, through cooperation with the restoring tension force effect of reset tension springs, the flexible mechanisms are pushed out of the output disk sequentiallyby the aid of the long-axis part of the wave generator, and teeth outside rigid arc plates mesh with inner teeth of the rigid wheel, so that the speed reduction effect equivalent that of flexible wheels in the prior art is realized; compared with the prior art, the improved structure has the advantages that repeated deformation of the flexible wheel is changed into reciprocating sliding of the flexible mechanisms, deformation of the flexible wheel is changed into deformation of the reset tension springs, thus the problem that the flexible wheel is prone to damage due to repeated deformation is avoided, and meanwhile, the reset tension springs are not prone to fatigue damage and are cheap to replace.

Description

technical field [0001] The invention relates to the technical field of high-precision reducers, in particular to an improved structure of a flexible wheel of a harmonic reducer. Background technique [0002] The harmonic reducer is composed of three basic components, which are: a fixed internal toothed rigid wheel, a flex spline c, and a wave generator that causes radial deformation of the flex spline c, such as figure 1 As shown in , the flexspline c is a deformable thin-walled cylinder with a ring gear on the busbar at the beginning, and the wave generator 2 is an elliptical bearing. , the long axis of the ellipse makes the external teeth of the flexible spline c mesh with the internal teeth of the rigid spline, and the short axis of the ellipse makes the external teeth of the flexible spline c mesh with the internal teeth of the rigid spline, and the motor drives the wave generator to rotate at a high speed In the process, the flexible spline c and the rigid spline are r...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use process of the existing harmonic reducer proposed in the background technology, the present invention provides an improved structure of the harmonic reducer flexible wheel, which has the advantages of increased normal service life of the harmonic reducer and low cost of use , to solve the problem of fatigue failure caused by the alternating stress caused by the frequent deformation of the flexspline proposed in the above background technology

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