HARMONIC DRIVE WORKING PRINCIPLE Harmonic Gearbox also called as Harmonic drive Gearbox or Strain Wave Gearbox was initially introduced only as a speed changers to reduce the gear ratio by increasing the torque. But now in the present manufacturing reforms it is also used for different purposes other that its speed changer features. They can be used in a variety of applications from low cost machines like vending machines to high value systems like defence and aerospace. Harmonic Gear reducer has now become the only choice for applications requiring positional accuracy and repeatability. This Gearbox has simple three-element construction combined with harmonic drive principle making it suitable for high reduction ratios capabilities and light weight. This structure of the Harmonic Gearbox makes this gearbox unique and also helps in maintaining the minimum Backlash. Also, the performance of Harmonic gearbox also remains constant over a longer period of time because of its structure and teeth alignment. With all these features Harmonic gearbox offers a price advantage than any other transmission system, its simple and elegant design allows manufacturing cost to be reduced and results into performance advantage.
Basic Elements or Components of Harmonic gearbox :There are 3 basic elements in the Harmonic Drive Gearbox : a circular spline, a flexspline and a wave generator. These 3 components interacts in such a way that helps in achieving high reduction ratios.