Flexible gear and harmonic reducer suitable for heavy load working condition

Abstract

The invention provides a flexible gear and a harmonic reducer suitable for heavy load working condition. The flexible gear comprises a cylinder body, an inner hole of the cylinder body is used for installing a wave generator, a plurality of flexible gear teeth are arranged on the outer circumferential wall of the cylinder body, the flexible gear teeth are evenly arranged in the circumferential direction of the cylinder body at intervals and extend in the axial direction of the cylinder body, the tooth profiles of the flexible gear teeth are symmetrical about a first plane, the first plane is a plane passing through the axial extension line of the top points of the tooth profiles of the flexible gear teeth and the central axis of the cylinder body, and on the first plane, along the direction from the cylinder opening to the cylinder bottom of the cylinder body, the tooth-direction modification curve of the flexible gear teeth is a continuous smooth curve, and the distance between the tooth-direction modification curve and the central axis is increased firstly and then decreased. According to the flexible gear, the phenomenon of inter-tooth interference in the meshing process can be reduced.

Description

technical field [0001] The invention belongs to the technical field of harmonic reducers, and in particular relates to a flexspline and a harmonic reducer suitable for heavy-duty working conditions. Background technique [0002] The harmonic reducer is mainly composed of a rigid wheel, a flexible wheel and a wave generator. The flexible spline produces elastic deformation under the action of the wave generator and interacts with the rigid spline. Specifically, the wave generator is input, and the rigid spline or flexible spline is used as the output under the action of the meshing between the teeth, and the output is decelerated relative to the input. Effect. [0003] When the harmonic reducer is used in heavy-duty conditions (i.e. exceeding the instantaneous allowable maximum torque condition of the reducer), the flexspline structure will increase the meshing depth of the tooth grooves of the flexspline under the condition of ensuring normal transmission, resulting in fric...

AI Technical Summary

Problems solved by technology

At the same time, the connection points of the trimming line itself and the line segments at both ends should be reduced as much as possible, or avoided in a tangential way. The large curvature change of the curve is likely to cause interference, resulting in friction and wear.

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