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Why are the tooth patterns of automobile gearboxes oblique?

Why are the tooth patterns of automobile gearboxes oblique?

  • Categories:Industry News
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  • Time：2021-08-10
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[Summary]The forward gear is the most used gear in automobiles. The use of helical gears can ensure sufficient strength and is more quiet and comfortable. Therefore, automobile gearboxes are basically helical gears.

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Why are the tooth patterns of automobile gearboxes oblique?

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Why are the tooth patterns of automobile gearboxes oblique?

[Summary]The forward gear is the most used gear in automobiles. The use of helical gears can ensure sufficient strength and is more quiet and comfortable. Therefore, automobile gearboxes are basically helical gears.

  • Categories:Industry News
  • Author:
  • Source:
  • Time：2021-08-10
  • Visits:0
Information
The forward gear is the most used gear in automobiles. The use of helical gears can ensure sufficient strength and is more quiet and comfortable. Therefore, automobile gearboxes are basically helical gears.
 
This kind of gear is called a helical gear. The helical gear has a larger bearing capacity and lower noise and vibration than a spur gear.
 
Moreover, the number and area of ​​meshing teeth at the same time during the transmission of spur gears is limited, which is not as large as that of helical gears. And if you want to transmit more torque, you need larger teeth, and the larger the teeth, the larger the volume of the gear.
 
However, the advantage of spur gears is that they can be freely engaged and disengaged in the horizontal direction. Many reverse gears of automobiles are directly engaged with spur gears. This saves a set of coupling sleeves and reduces cost and weight. The result is that this kind of car is reversed. The gearbox will buzz. In addition, because of its small size, the transmission line of motorcycles can only be made simpler and uses straight gears to eliminate complicated synchronization mechanisms. Therefore, there is also a buzzing sound when the motorcycle is driving. The most obvious thing is the rally we watched. The car inside uses a sequential gearbox. The spur gear is directly meshed. In principle, it is basically the same as the motorcycle gearbox. The all spur gears can change gears quickly. The sound of the box is so loud.
 
During the meshing process of the helical gear, each tooth gradually completes all meshing from one point, the meshing transition is smooth, the noise is small, and the vibration is small. Moreover, the meshing area is larger and the bearing capacity is larger during the transmission process.
 
The forward gear is the most used gear in automobiles. The use of helical gears can ensure sufficient strength and is more quiet and comfortable. Therefore, automobile gearboxes are basically helical gears.

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