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Why are the gears in most gearboxes helical
Source: | Author:pmoafb36e | Release time:2019-03-20 | 659 views | Share:
The importance of gearbox to the car is self-evident, after all, it is one of the three main parts of the car. Transmission plays a vital role in power transmission. In addition to the CVT, all manual, dual clutch and AT transmissions are geared. But have you noticed that most of their gears are spiral? I've come to answer your question.

We all know that the purpose of gears is to engage with other gears to further transmit power. What is the difference between spiral teeth and straight teeth?

Yes, the spur gear is entered at the same time when the whole tooth meshing, the tooth is "positive" between the teeth, will produce a strong impact force, and the vibration will be more obvious.

On the contrary, spiral gear meshing is not as rigid as straight teeth, it is a relatively soft way to gradually enter, out of the meshing, first point, then face, then point, the load is gradually increased, so the working state will be very stable.

Moreover, because the tooth grain of spiral gear is inclined, there will be a certain sense of inspiration, and the spiral tooth force is placed in the axial force, which will not appear in the case of the hanging block against the tooth, and the service life will be longer.

To sum up, helical gear has smooth transmission, strong bearing capacity, low noise and impact, and is suitable for high-speed and high-power gear transmission.

Some models use spur gears for first and reverse, while others use helical gears, which is economical and compact.
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