A Harmonic Reducer

Abstract

A harmonic reduction device, comprising a rigid spline with internal teeth, a flexible spline with external teeth and a wave generator, the flexible spline is arranged inside the rigid spline, the wave generator is arranged inside the flexible spline, and the wave generator is Double wave generator. The wave generator includes a flexible bearing and a cam set in the inner hole of the flexible bearing. The outer contour of the cross section of the cam is formed by four eccentric arcs inscribed and tangentially connected in sequence, and the whole is roughly centered. Symmetrical quasi-ellipse. Among the two adjacent eccentric arcs, the curvature center of one eccentric arc is located on the short axis, and the curvature center of the other eccentric arc is located on the long axis. The cam is installed behind the inner hole of the flexible bearing. The outer contour line of the bearing outer ring after deformation also corresponds to a structure formed by four eccentric arcs connected sequentially, inscribed and tangentially. Therefore, the wave generator is easy to achieve ideal manufacturing precision, can ensure flexible rotation, and makes the tooth shape meshing between the rigid spline and the flexible spline stable.

Description

technical field [0001] The invention relates to the technical field of speed reducers, in particular to a harmonic speed reduction device. Background technique [0002] The traditional harmonic drive (HD for short) is usually a transmission device that relies on a pure elliptical wave generator to make the flexible gear generate a controllable elastic deformation wave to realize motion and power transmission, because of its small size, With many advantages such as large torque, high positioning accuracy, small vibration, and impact resistance, it is widely used in chip equipment, robots, manipulators, numerical control equipment, automation equipment, aerospace and other fields. However, the traditional elliptical wave generator makes the design and manufacture of this kind of transmission device complex and difficult. In the manufactured products, when the elliptical wave generator props up the flexspline, it cannot realize the tooth shape and shape of the flexspline being ...

AI Technical Summary

Problems solved by technology

However, the traditional elliptical wave generator makes the design and manufacture of this kind of transmission device complex and difficult. In the manufactured products, when the elliptical wave generator props up the flexspline, it cannot realize the tooth shape and shape of the flexspline being supported. The pre-designed tooth shape of the flexspline meets the consistent requirements; that is to say, the current structure of the harmonic reducer makes manufacturing and processing difficult, and it is difficult to achieve the expected manufacturing accuracy. Therefore, a high-precision harmonic reducer is required. Harmonic reducer structure made by reducer

Images