Many gears have helical teeth because helical gears have some advantages:
1. Smooth transmission: The bevel of the helical gear can make the transition between gears smoother, reducing vibration and noise during gear transmission.
2. High load capacity: Due to the presence of tooth surface angles, helical gears can withstand greater forces and torques, making them suitable for high load transmission systems.
3. High transmission efficiency: The bevel of helical gears can improve transmission efficiency and reduce energy loss.
4. Speed balance: During helical gear transmission, the angle of the inclined plane can make the speed distribution uniform, reduce the variation of axial force, and improve the smoothness of operation.
In addition, helical gears also have disadvantages, such as high manufacturing costs and high production and installation requirements. Therefore, in different application scenarios, we will choose suitable gear types based on specific requirements.