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Introduction to the advantages of harmonic reducer

update:21-06-2021
abstract:

Harmonic reducer is mainly used in aviation, aerospace, […]

Harmonic reducer is mainly used in aviation, aerospace, robotics, communication equipment, electronic equipment, medical equipment and other fields. Because the basic components of harmonic reducer and the working principle of harmonic reducer are very much like ordinary gear reducers Differentiation, therefore determines that it has the advantages that ordinary gear reducers can’t match.
1. Small and lightweight
Compared with the general gear reducer, when the output torque is the same, the volume of the harmonic reducer can be reduced by 2/3, and the weight can be reduced by 1/2.
2. High transmission accuracy
Because the number of teeth meshed at the same time in the harmonic drive is large, the error is averaged, that is, the multi-tooth meshing has a mutual compensation effect on the error, so the transmission accuracy is high. In the case of the same gear accuracy grade, the transmission error is only about 1/4 of that of ordinary cylindrical gear transmission. At the same time, the radius of the wave generator can be changed slightly to increase the deformation of the flexspline so that the backlash is small, and even the backlash-free meshing can be achieved, so the transmission has a small idle distance and is suitable for reverse rotation.

3. Large transmission ratio
The single-stage harmonic transmission speed ratio ranges from 70 to 320, and can reach 1000 in some devices, and the multi-stage transmission speed ratio can reach more than 30,000. It can be used not only for speed reduction, but also for speed increase occasions.
4. Simple and compact structure, convenient installation
Because there are only three basic components, and the input and output are the same, the structure is simple and compact, and the installation is convenient.
5. High carrying capacity
This is because the number of teeth meshed at the same time in the harmonic drive is large, and the number of teeth meshed at the same time in the double-wave drive can reach more than 30% of the total number of teeth. Moreover, the flexspline uses high-strength materials, and the teeth and teeth are in surface contact.
6. Can transmit motion to confined spaces
Utilizing the flexible characteristics of the flexspline, this particular advantage of the wheel drive is unmatched by other existing drives.
7. High transmission efficiency and smooth movement
Due to the uniform radial movement of the flexspline gear teeth in the transmission process, even if the input speed is high, the relative slip speed of the gear teeth is still extremely low (so it is one percent of the ordinary involute gear transmission) Therefore, the gear teeth are less worn and the efficiency is high (up to 69%-96%). Also, because both sides of the gear participate in the work when engaging in and out, there is no impact phenomenon and the movement is stable.
Due to the superiority of the harmonic drive principle, the harmonic reducer has the advantages that the above 7 other ordinary gear reducers can't compare, so it can get important applications in important parts in various important fields.
https://www.arcsecdrive.com/

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