What is the difference between mechanical parts sprocket and gear?

In view of the difference between the sprocket and the gear, it is in the manufacturing process or the mechanical properties, let us look at it. The sprocket is driven by a chain, and the model unit is generally imperial. Compared with gears, it can be used in the center of the two axes. The gears are driven by mutual meshing, and the model units are mostly metric, expressed in modulus. The power and speed range of the drive is large. The compact structure enables a large transmission ratio, high efficiency and long service life.

The difference between a sprocket and a gear is mainly:

1. The gear is involute tooth shape, and the sprocket is a "three arc straight line" tooth shape.

2. The gear can realize the transmission between the parallel shaft and any interlaced shaft, and the sprocket can only realize the transmission between the parallel shafts.

3. The gear transmission structure is compact, and the sprocket can be transmitted over long distances.

4. The gears are driven by the gear teeth of the two gears to mesh with each other, and the two sprocket wheels are driven by the chain.

6. The gear transmits more torque than the sprocket.

7. Gear machining accuracy and installation cost are higher than sprocket.

8. The sprocket drive is suitable for transmissions with a large center distance, and it has the characteristics of light weight and low cost.

9. The machining precision and installation accuracy of the chain and sprocket in the sprocket drive and the accuracy of the center distance are lower than the gear requirements, and the installation and maintenance are also simpler and more convenient.

10. Under normal circumstances, the sprocket has the sprocket teeth and the chain at the same time, and the sprocket has a large arc and a small stress concentration. Therefore, the sprocket has higher bearing capacity and the surface of the gear is worn. light.

11. Since the chain has better elasticity, and each hinge part of the chain can store lubricating oil, the sprocket has better cushioning capacity and vibration absorbing ability than the rigid contact teeth.