Why Are Gear Reducers Mostly Helical Gears?
Gear is an important part of the gear reducer and plays an important role. Most gear reducers use helical gears. Why is this?
1. Compared with straight teeth, the position of the shaft of the helical gear reducer is more free. For example, the drive shaft of a differential with oblique bevel gears may not necessarily be on the same level as the rear axle. If it is a straight bevel gear, it is necessary.
2. Reduce noise. If helical gears are used, the noise will be much lower than straight gears at the same speed. The reason is that the surface of the helical tooth is in point contact first, then transitions to surface contact, to point contact. The spur gear is the contact between the surface and the line. The transition of helical teeth is smoother. Therefore, the noise generated by the sudden change of contact is much smaller than that of a flat tooth.
3. The helical gear has a large coincidence degree,and a large number of teeth enter the mesh at the same time. Reduce impact and noise, make the transmission more stable, and can withstand high-speed heavy loads.
4. During processing, avoid the small number of teeth that cause undercutting. The corresponding gears are smaller in size, so when the transmission ratio of the transmission pair is the same, the volume of the gear reducer using helical gears is smaller.
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