Common gearheads include helical gearheads (including parallel shaft helical gearheads, worm gearheads, bevel gearheads, etc.), planetary gearheads, cycloid gearheads, worm gearheads, planetary friction gearheads, and stepless transmissions.
Rare varieties of speed reducers
1, the secondary characteristics of worm gear reducer is that it has reverse self-locking function, can have a larger acceleration ratio, the output shaft and the input shaft are not in the same axis, nor in the same three-dimensional. But the ordinary volume is large, the transmission efficiency is not high, and the precision is not high.
2, harmonic reducer harmonic transmission is the application of flexible components of controllable elastic deformation to transfer motion and power, the volume is not large, high precision, but the defect is that the flexible wheel life is unlimited, not impact resistance, rigidity and metal parts compared to the poor. The output speed cannot be too high.
3, the advantages of the planetary reducer is a relatively compact structure, small return clearance, high precision, long service life, additional input torque can be made very large, but the price is slightly expensive.
The role of the speed reducer
1、Downspeed at the same time to improve the input torque, torque input ratio according to the stepper motor input multiplied by the acceleration ratio, but pay attention to not exceed the additional torque of the reducer.
2, speed reduction at the same time to reduce the inertia of the load, the inertia increases for the square of the acceleration ratio, you can look at the ordinary motor have a value of inertia.