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Harmonic Gearing

Harmonic Gearing is also called as Strain wave gearing is a mechanical type of gearing system that has flexible spine with external teeth which is deformed by a rotating elliptical plug to engage with the internal gear teeth of an outer spine <br>

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Harmonic Gearing

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  1. Harmonic Gearing –GCSG series Harmonic Gearing is also called as Strain wave gearing is a mechanical type of gearing system that has flexible spine with external teeth which is deformed by a rotating elliptical plug to engage with the internal gear teeth of an outer spine Some advantages of Harmonic Gearing No backlash Compactness and light weight High gear ratios Reconfigurable ratios within a standard housing Good resolution Excellent repeatability High torque capability Coaxial input and output shafts Strain wave gearing is commonly used in robotics and aerospace. It can be used in gear reduction but also in increase rotational speed. The strain wave or harmonic Gearing uses the elasticity of metal. The mechanism has three basic component 1)Wave generator 2) Flex spline 3)Circular spline More complex version has fourth component normally used to shorten the overall length. But it also follows simple principle. Harmonic gearing has made of two different parts an elliptical disk called a wave generator plug & outer ball bearing. The elliptical part is inserted into bearing, forcing the bearing to conform to the elliptical shape but the still allowing rotation of the plug within the outer bearing The flex Spline is shaped like a shallow cup. The sides of the spline are very thin but the bottom is relatively rigid.A thin wall results in a significant amount of flexibility at the open end, while the wall at the closed side will be rigid enough to be tightly secured. Teeth position radially around the flex spline deforms to the shape of a rotating ellipse. It does not slip over the outer elliptical rings of the ball

  2. bearing. Ball bearing let the Flex spline rotate independently to the wave generator’s shaft. Circular spine or circular ring with teeth on its inside. Flex spline and wave generator are placed inside the circular spline. The flex spine is deformed into an elliptical shape; its teeth only actually mesh with the teeth of the circular spline in two regions on opposite side of the flex spline The wave generator plug rotates, the flex spline teeth which is interlinked with the circular spline Flex spline’s ellipse rotates with wave generator so the mesh of teeth resolve lowly start changing their position. And that’s create circular rotation.

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