Issue 52: Hengyu Guoqiang reducer - what are the classification of reducer use
Time：2018-08-13 | Source：恒宇国强 | Browse：1561566
The general reducers include helical gear reducers (including parallel shaft helical gear reducers, worm gear reducers, bevel gear reducers, etc.), planetary gear reducers, cycloid pin gear reducers, worm gear reducers, planetary friction mechanical continuously variable transmission, etc.
（1） Cylindrical gear reducer
Single level, two-level and above two-level. Layout: deployable, split, coaxial.
（2） Bevel gear reducer
It is used when the position of input shaft and output shaft intersect.
（3） Worm reducer
It is mainly used in the case of transmission ratio I > 10. When the transmission ratio is large, the structure is compact. Its disadvantage is low efficiency. At present, Archimedes worm reducer is widely used.
（4） Gear worm reducer
If the gear transmission is in the high speed stage, the structure is compact;
If the worm drive is in the high speed stage, the efficiency is higher.
（5） Planetary gear reducer
High transmission efficiency, wide range of transmission ratio, Transmission Power 12W ~ 50000kw, small volume and weight.
3、 Types of common reducers
（1） The main feature of worm gear reducer is that it has reverse self-locking function and can have larger reduction ratio. The input shaft and output shaft are not on the same axis or plane. But the general volume is large, the transmission efficiency is not high, the accuracy is not high.
（2） The harmonic drive of harmonic reducer uses the controllable elastic deformation of flexible components to transmit motion and power, which is small in volume and high in precision. However, the disadvantage is that the flexible wheel has limited life, is not shock resistant, and its rigidity is poor compared with metal parts. The input speed cannot be too high.
（3） Planetary reducer has the advantages of compact structure, small return clearance, high precision, long service life and large rated output torque. But the price is a little higher. Reducer: in short, after the power of general machine is designed and manufactured, its rated power will not change. At this time, the higher the speed, the smaller the torque (or torque); The smaller the speed, the greater the torque.
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