Precision Design of Cylindrical Gear Transmission
Cylindrical gear transmission is an optimal transmission solution for a variety of mechanisms and equipment. It can reduce the transmission volume and simplify the transmission structure, reduce the transmission noise, and improve the transmission efficiency. The precision design of cylindrical gear transmission is the key to achieving these advantages.
The precision design of cylindrical gear transmission includes various aspects, such as gear and gear shaft design, gear and gear shaft installation, back-to-back distance, transmission center distance and bearing design. Different considerations need to be taken into consideration in the design. For example, considering the pitting of gear teeth, interference and axial movement, noise and vibration, the gear and gear shaft need to be designed appropriately according to the use environment and performance requirements of the transmission.
1. Design of Gear and Gear Shaft
The choice of gear and gear shaft depends on the load, speed, transmission accuracy and working environment. The choice of material should also be considered. Generally, the gear material should be brittle and wear resistant, and the gear shaft material should be ductile and fatigue resistant. The specific gear type should be considered according to different loads and working conditions.
In addition, the design should consider the principles of strength, stiffness and stability. The gear should be designed to have sufficient strength and stiffness to withstand the load. The gear should be designed to be stable, so that the gear teeth do not contact in adjacent positions, causing abnormal pitting and wear.
2. Gear and Gear Shaft Installation
The installation of gear and gear shaft is also very important. In the design of cylindrical gear transmission, the gear and gear shaft should be installed correctly according to the technical requirements of the transmission. Generally, the gear should be firmly fixed on the output shaft, and the gear shaft should be installed using an appropriate mounting method. In addition, the installation should also consider matters such as pre-tension, transmission center distance and angle of transmission, etc.
3. Back-to-Back Distance
The back-to-back distance refers to the distance between two gear teeth of a gear. This is an important factor that affects the accuracy and smoothness of the transmission. Therefore, the back-to-back distance should be designed to be appropriate, generally greater than the diameter of the gear.
4. Transmission Center Distance
The transmission center distance refers to the distance between two gears in the gear transmission. This distance is determined by the size of the gear, the inertia force of the output shaft and the bearing capacity of the shaft. Therefore, it should be considered in the design.
5. Bearing Design
The bearing is an important component of the cylindrical gear transmission. The bearing design should include the choice of material and size, bearing clearance, bearing preloading and sealing. In addition, consideration should also be given to the method of bearing installation and lubrication.
In conclusion, the precision design of a cylindrical gear transmission is an important aspect of ensuring the successful operation of the transmission. The precision design of the transmission should consider various aspects and technical requirements in order to ensure the accuracy and reliability of the transmission.
