Harmonic reducers, as high-performance reducers characterized by their small size, light weight, compact structure, large reduction ratio, high transmission efficiency, high transmission precision, and high transmission stiffness, have been widely used in industrial robots and aerospace fields. The transmission efficiency of a harmonic reducer directly affects its performance.
(Harmonic reducer)
What factors affect the transmission efficiency of harmonic reducers?
1. Ambient temperature: Under the same conditions, the higher the ambient temperature, the higher the transmission efficiency (PS: higher temperature results in better lubrication).
2. Speed: The higher the speed, the lower the efficiency.
3. Speed ratio: The higher the speed ratio, the lower the efficiency under the same conditions.
4. Load: Under the same conditions, the greater the load, the higher the efficiency.
The main factors affecting the transmission efficiency of harmonic reducers include ambient temperature, speed, speed ratio, and load. The transmission efficiency of harmonic reducers increases with increasing workload, decreases with increasing speed, and increases with increasing test temperature.
Harmonic reducers are mainly used in aviation, aerospace, robotics, communication equipment, and electronic equipment. Because the basic components and working principle of harmonic reducers differ significantly from those of ordinary gear reducers, they possess advantages that ordinary gear reducers cannot match.
How is the reduction ratio of a harmonic reducer calculated?
1. Formula for calculating the reduction ratio of a harmonic reducer:
Reduction ratio = Motor output speed ÷ Harmonic reducer output speed
2. Formula for calculating the torque of a harmonic reducer:
Torque = 9550 × Motor Power ÷ Motor Power Input Speed × Speed Ratio × Efficiency
3. Formula for calculating the gear ratio of a harmonic reducer:
Gear ratio i = Number of teeth on the large gear / Number of teeth on the small gear
In a harmonic reducer, the rigid wheel typically has two more teeth than the flexible wheel. When the wave generator is installed on the inner circumference of the flexible wheel, it forces the flexible wheel to continuously deform, causing the two wheels to mesh. During the separation process, they continuously change their working state, generating a so-called staggered tooth motion, thereby realizing the motion transmission between the active wave generator and the flexible wheel, thus achieving a high speed ratio.
