The difference between reducer and gearbox

What is a speed machine?
The reducer is a power transmission mechanism that uses a gear speed converter to decelerate the number of revolutions of the motor to a desired number of revolutions and obtain a mechanism of a large torque.

The reducer is generally used for low-speed and high-torque transmission equipment. The motor, the internal combustion engine or other high-speed power is transmitted through the gears on the input shaft of the reducer to mesh the large gears on the output shaft to achieve the purpose of deceleration. The reducer will also have several pairs of identical principle gears to achieve the desired deceleration effect. The ratio of the number of teeth of the large and small gears is the transmission ratio.

■ The role of the reducer
1) Reduce the speed and increase the output torque at the same time. The torque output ratio is multiplied by the motor output and the reduction ratio, but it should be noted that the rated torque of the reducer cannot be exceeded.
2) The speed simultaneously reduces the inertia of the load, and the reduction of the inertia is the square of the reduction ratio. You can see that the general motor has an inertia value.

■ Type of reducer
The general reducer has a helical gear reducer (including parallel shaft helical gear reducer, worm gear reducer, bevel gear reducer, etc.), planetary gear reducer, cycloidal pin reducer, worm gear reducer, planetary friction type Mechanical stepless speed change machine and so on.

■ Types of common reducers
1) The main feature of the worm gear reducer is that it has a reverse self-locking function and can have a large reduction ratio. The input shaft and the output shaft are not on the same axis, nor on the same plane. However, the volume is generally large, the transmission efficiency is not high, and the accuracy is not high.

2) Harmonic transmission of harmonic reducer is the use of flexible deformation controllable elastic deformation to transmit motion and power, small volume, high precision, but the disadvantage is that flexible wheel life is limited, not impact resistant, rigid and metal parts Relatively poor. 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 slightly more expensive.

The reducer is generally used for low-speed and high-torque transmission equipment. The motor, the internal combustion engine or other high-speed power is transmitted through the gears on the input shaft of the reducer to mesh the large gears on the output shaft to achieve the purpose of deceleration. The reducer will also have several pairs of identical principle gears to achieve the desired deceleration effect. The ratio of the number of teeth of the large and small gears is the transmission ratio.