1, unified modular design:
In gear transmission, the modulus of two adjacent gears should be the same, so as to ensure their good cooperation. At the same time, it can also facilitate the manufacture and maintenance of gears.
2, the correct choice of gear type:
Different types of gears are suitable for different working conditions, and the appropriate gear type should be selected according to the actual situation. For example, planetary gears are suitable for high-torque and high-speed transmission, and helical gears are suitable for low-noise transmission.
3, reasonable design of the number of teeth:
The number of teeth of gears should be as large as possible, which can reduce the load of each gear and the torque between adjacent gear teeth. At the same time, it can also reduce noise and vibration and improve transmission efficiency.
4, determine the gear wheelbase:
In gear transmission, the distance between gear shafts should be kept within a certain range. If the distance is too close, the load and friction will increase, making the gear easy to be damaged; If the distance is too large, the transmission efficiency will be reduced.
5, tangential force calculation:
In gear transmission, tangential force is one of the resultant forces, which must be considered in design. The tangential force directly affects the life and durability of gears and should be reduced as much as possible.
6, gear material selection:
The material of gear should have high elastic modulus and high strength, and at the same time, it can provide certain toughness and wear resistance. Commonly used gear materials are steel, cast iron, copper alloy and so on.
7, improve the hardness of tooth surface:
The hardness of gear tooth surface has a decisive influence on its service life and transmission efficiency. In order to improve the hardness of gear tooth surface, quenching, grinding and other processing methods can be used.
Common uses of gears:
1, transmission power:
Gears are often used to transmit the power of mechanical equipment, such as the transmission of automobiles and the linkage between motors and mechanical equipment.
2, change the speed and torque:
Through different gear combinations or gear systems, the rotational speed and torque of the transmission device can be changed to meet the requirements of different working conditions.
3, realize the movement direction conversion:
Gears can convert rotary motion into parallel or vertical motion, so that mechanical equipment can work in different directions.
4. Control synchronization and positioning:
The design of gears can synchronize and locate the movements of different parts, and ensure the coordinated work of all parts of mechanical equipment.
5. Auxiliary shock absorption and transmission:
The gap between gears can absorb the impact, reduce the vibration during transmission, and improve the stability and stability of the equipment.