1. Transmission characteristics of helical cylindrical gears:
1. When the transmission is stable: a pair of helical spur gears, since the gear teeth are not parallel to the gear axis, during the engagement transmission process, the two gear teeth are in contact with the straight line inclined to the axis, and the growth of the contact line on the surface of the teeth is short, and then shorten until it breaks away. Therefore, the load of the wheel teeth is gradually subjected to less than the larger, so that the transmission is relatively smooth, shock, vibration and noise, and improve the stability of the transmission.
2. High carrier capacity: In the helical gear transmission, due to the inclination of the gear teeth, when the end of the gear teeth enters into engagement, the other end has not yet entered into engagement, and when one end is engaged, the other end is continuously engaged. The wheels are disengaged. Compared to a pinch gear drive, as the end size and width, the helical gears are simultaneously engaged in the engagement of the rotor tooth diameters rather than the spur gears, so the helical gears coincide more than the spur gears, making it possible to stabilize the transmission, and can Improve the bearing capacity of the gear.
Second, spur gear transmission characteristics: compact structure, strong load capacity.
Apply the derailleur where the speed is required, or in order to transfer the motion and power needed. Cylindrical straight-acting gears are used for parallel shaft transmission, and when the gears are withdrawn, they go along the teeth at the same time, and are prone to shock, vibration and noise.
Different failure forms of gear drives can occur simultaneously on a pair of gears, but they are interacting. For example, naps on the tooth surface can increase wear on the tooth surface, and severe wear can cause wheel teeth to break. In some conditions, the form of the tooth surface is mainly due to the breakout of the rotation. Therefore, when designing the gear transmission, it should be analyzed according to the actual operating conditions to determine the corresponding design standards.
