Harmonic Drive developed a unique gear tooth profile that optimizes the tooth engagement. This tooth profile (the “S tooth”) enables up to 30% of the total number of teeth to be engaged simultaneously. Additionally the large tooth root radius increases the tooth strength compared with an involute tooth.
How do you use a harmonic drive?
https://www.youtube.com/watch?v=bzRh672peNk
Can you Backdrive a harmonic drive?
Backdrivability of a harmonic drive, when used as torque increaser, means that the output shaft can be rotated via finite amount of torque. A high ratio harmonic drive is non-backdrivable because its output shaft cannot be turned by applying a torque on it.
What are the advantages of a harmonic drive gear compared to other conventional gear systems?
With operating principles and construction that maximize output torque and minimize size and weight, Harmonic Drive® gears offer advantages such as high reduction ratios in a single stage, zero backlash, and high precision that cannot be equaled by conventional gear trains.
How do harmonic drives work and what is the benefit of this system?
Harmonic Drive gears are noted for their ability to deliver precision motion control with very low or even zero backlash and vibration, providing high reduction ratios through concentric shafts in a lightweight yet robust assembly.Nov 21, 2006
Why are harmonic drives so expensive?
While harmonic drives have few parts and those parts aren't expensive, they are still uncommon and usually only used for specialty applications. That makes them pricey. ... Most harmonic drives gearboxes are driven by brushless DC (BLDC) electric motors, but this one is driven by a stepper motor.
What is a harmonic drive reducer?
Harmonic Drive, mechanical speed-changing device, invented in the 1950s, that operates on a different principle from, and has capabilities beyond the scope of, conventional speed changers. It consists of a thin ring that deflects elastically as it rolls on the inside of a slightly larger rigid circular ring.Dec 14, 2021
How does a harmonic gear work?
Strain wave gearing (also known as harmonic gearing) is a type of mechanical gear system that uses a flexible spline with external teeth, which is deformed by a rotating elliptical plug to engage with the internal gear teeth of an outer spline.
What are the advantages of a harmonic drive?
Compared to classical toothed gears, harmonic drives have numerous advantages, but there are some disadvantages as well. Their main advantages include: high torque capacity, excellent positioning accuracy and repeatability, compact design, zero backlash, high single-stage reduction ratios and high torsion stiffness.