Advantages of Harmonic drive | Harmonic drive in delhi

Basically, the Harmonic Drive -developed to take advantage of the elastic dynamics of metal- is typically made up of only three components: a wave generator, a flexspline and a circular spline (Depending on its shape, the Harmonic Drive is sometimes made up of four components; but even this four-component Harmonic Drive is based on the same principle of motion). One can grasp the Harmonic Drive's unique mechanisms from the way its teeth mate with one another. Precimotion is one of the leading Strainwave gearbox services in Delhi. Our offered products including Servo planetary gearbox, AGV are known for their utmost quality and reasonable cost. We are professionally managed with the rich experience in the field of Industrial automation & control systems. (Gearbox manufacturing company in Delhi)

Wave Generator: The Wave Generator is an assembly of a thin-raced ball bearing which is fitted onto the periphery of an elliptical cam. The inner ring of the bearing is fixed around the cam causing the outer ring of the bearing to conform to the same elliptical shape of the assembly. The Wave Generator is usually attached to the input shaft.

Flexspline: The Flexspline is a thin-walled steel cup with gear teeth machined into the outer surface near the open end of the cup. The bottom of the Flexspline (cup bottom) is also called the diaphragm. The diaphragm is usually fitted into the output shaft.

Circular Spline: The Circular Spline is a rigid steel ring with teeth on the inside diameter. The Circular Spline has two teeth more than Flexspline. It is usually fixed to a casing.

Characteristics:

1.     High-speed reduction ratio

A Harmonic Drive has very high single-stage coaxial reduction ratios of 1/30 to 1/320. This is why it provides high efficiency gearing without using complex mechanisms and structures.

2.     Backlash-free (lost motion)

Different from the ordinary tooth-to-tooth mating mechanism, the Harmonic Drive operates with very little backlash (nearly zero), which is an essential characteristic for motion control.

3.     High accuracy

With the Harmonic Drive, high positional and rotational accuracy are assured because a good percentage of its teeth are meshed at all times, and are engaged at two zones 180 degrees apart. This means influences of tooth pitch errors and accumulated pitch errors on rotational accuracy are neutralized to assure the high positional and rotational accuracy.

4.     Small number of components and ease of assembly

High reduction ratios can be achieved with only three gear components, and since all three components are co-axially aligned, the Harmonic Drive can be easily built into component-assembled products, allowing for simple configurations.

5.     Small-sized and lightweight

While being less than 1/3 the size of conventional gearing mechanisms in terms of capacity and less than 1/2 the weight, the Harmonic Drive provides the same levels of torque and speed reduction ratios as its conventional counterparts enabling machinery and equipment to be made smaller and lighter.

6.     High torque capacity

The Flexspline has high torque capacity which is made of special steel with a higher resistance to fatigue. Different from a typical power transmission device, each tooth is subjected to a negligible amount of force but yet provides a high torque capacity because of the way the teeth come into contact with each other and because roughly 30% of the teeth in the Flexspline are engaged at all times.

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