What Is a Gear Train?

Gear train is a general term for the classification of gears. There are two series of fixed-axis gear train and planetary gear train, which can realize split transmission and variable speed transmission. It is widely used in clocks, minutes, seconds, hands and reduction gears.

The gear train is divided into two categories: fixed shaft

1. Realize shunt transmission, such as

1.Achieving motion and

1. Cylindrical gear transmission

Features: accurate and reliable transmission motion, wide transmission speed range and strong power adaptability; high use efficiency, long life and compact structure; can transfer motion and power between two weeks of arbitrary configuration in space; cannot be continuously variable, two weeks The distance between them must not be too large; there is vibration and noise, and the processing cost is high.

Life applications: clocks, automotive transmissions, bicycles.

2.Bevel gear transmission

Features: The gears are arranged on the outer surface of the cone, and gradually shrink from the large end to the small end. According to the tooth shape, the gears are divided into straight teeth, helical teeth and curved teeth, which can transmit the motion and power of the two intersecting axes.

Life applications: automotive rear axle gearboxes, hydraulic transmission diesel locomotives, fan shafts, axle gearboxes, bullhead planer tables, and feed mechanisms.

3. Characteristics of worm drive

The transmission is stable, the movement precision is high, the noise and vibration are small; the speed reduction transmission ratio is large; the efficiency is low, so it is not easy to transfer large power, and it is not suitable for long-term work, and it requires steel processing.

Life applications: machine tools, mining machinery, lifting machinery, ships and instrument lights.

4.Screw transmission

Features: It has good reduction performance. It can obtain a large thrust by applying small torque to the driving part, high mechanical efficiency, uniform, stable, accurate transmission, and self-locking performance.

Application: It is commonly used in screw presses, cranes and other machinery, in the feed structure and adjustment structure of the machine tool carrier transmission table. ^[1]