Swing test device for detecting of flexible wheel of harmonic gear drive

Abstract

The invention discloses a swing test device for the detecting of a flexible wheel of a harmonic gear drive. The device comprises a fixing unit and a swing detecting unit, wherein a swing detecting unit is installed in the fixing unit through swinging; the fixing unit comprises a bottom supporting frame and two sections of arc-shaped plates, wherein the two sections of the arc-shaped plates are oppositely and fixedly installed on the top of the bottom supporting frame; double-shaft motors are fixedly installed at the two ends of a bottom plate of a swing detecting unit, and rubber rollers are coaxially and fixedly installed on two output shafts of the double-shaft motor; the rubber rollers at the two ends of the bottom plate are rotatably supported on the arc-shaped inner walls of the two sections of the arc-shaped plates respectively. The device has the advantages that the whole swing detecting unit can be controlled to swing in the fixing unit, and therefore the stability detecting onthe flexible wheel under a swing working condition is achieved.

Description

technical field [0001] The invention belongs to the technical field of harmonic reducers, in particular to a swing test device for detecting a flexible wheel of a harmonic reducer. Background technique [0002] Harmonic reducers have the advantages of small size, light weight, stable transmission, no impact, no noise, high motion precision, large transmission ratio, high load capacity, etc., and have been widely used in electronics, aerospace, robotics and other industries. The harmonic reducer includes a rigid gear (rigid wheel) with an inner ring gear, a flexible gear (flex spline) with an outer ring gear and a wave generator. Among them, the flex spline is an important part of the harmonic generator. Its shape, structure and manufacturing materials affect the service life of the harmonic reducer, and when the harmonic reducer works for a long time, the meshing friction between the flex spline and the rigid spline , and the repeated deformation of the flexspline will gene...

AI Technical Summary

Problems solved by technology

Among them, the flex spline is an important part of the harmonic generator. Its shape, structure and manufacturing materials affect the service life of the harmonic reducer, and when the harmonic reducer works for a long time, the meshing friction between the flex spline and the rigid spline , and the repeated deformation of the flexspline will generate high heat. The above factors, combined with the increase in ambient temperature, will easily have an adverse effect on the stiffness of the flexspline.

[0003] The stiffness characteristics of the flexspline when the harmonic reducer is working are as follows: 1. The outer ring gear of the flexspline needs to be rigidly connected with the inner ring gear of the rigid wheel, so it needs to bear a large force. The flexspline here A certain rigidity must be guaranteed; 2. The bowl-shaped structure at the bottom of the flexspline needs to bear the deformation force transmitted to the flexspline by the harmonic generator, so the flexspline here must ensure a certain degree of toughness, but the connection between the above two places of the flexspline The location is very prone to problems such as stiffness decrease due to temperature rise and accelerated metal fatigue or even fracture. However, there is currently no experimental device for testing the flexspline of the harmonic reducer under extreme conditions such as swinging.

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