Cylindrical gears or spur gears are cylindrical gears that are mounted on two parallel shafts, and one shaft drives the other shaft to make it rotate.
As the name suggests, dentures are oblique, with different spiral directions, which can be divided into left-handed obliques.
gears and right-handed helical gears. The helix angle of a pair of helical gears is the same,
But the direction of rotation is reversed.
The characteristic of the helical gear is that the tooth line is in a skewed state with respect to the gear shaft, and a larger meshing ratio can be obtained compared with the spur gear.
Therefore, compared with spur gears, helical gears can achieve low noise, low vibration, and are suitable for high-speed rotation and transmission of large power.