WFS Mini Double Gearbox Harmonic Reducer - California - Chico ID1518549

1. Composition of harmonic gearbox

harmonic gearbox has three basic components: a wave generator, a flex spline and a circular spline.

Wave generator: it is made up of a ball bearing and an elliptical cam.The wave generator is usually attached to the input end, the inner ring of the bearing is fixed around the cam causing the outer ring of the bearing deforms to an elliptical shape.

Flex spline: it is an elastic thin-walled component with gear teeth on outer surface . It is usually fitted to output end .

Circular spline: it is a rigid steel ring with internal teeth. It usually has two more teeth than the flex spline, and generally mounted onto a housing.

2. Principle of harmonic gearbox

As a reducer, the harmonic gearbox is often in a status as: the wave generator drives, the circular spline is fixed, the flex spline is output end.

When the wave generator is put inside of the flex spline, the flex spline is forced into an elliptical shape causing the flex spline teeth to engage with the tooth profile of the circular spline along the major axis of the ellipse, with the teeth completely disengaged across the minor axis of the ellipse.

The rotation of the wave generator makes the flex spline deform continuously, the teeth change operating state in the process of engagement and disengagement, thus the motion transmission between wave generator and flex spline is realized

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