The transmission of gears appeared more than three hundred years before Christ. Aristotle of ancient Greece had already elaborated on this issue. The operation of bronze or cast iron gears in the transmission of motion. In ancient China, the entire theoretical system had already been applied to the guide car. However, ancient gears were made of wood or metal and could not possess the special characteristics of modern Hebei gears. However, after hundreds of years of development, Hebei gears have become a remarkable product of innovation.
When gears are operating normally, they can exert a significant influence on the precision of torque. Mainly composed of cast iron, gears can be classified based on the direction of the load they bear, as well as the radial and thrust bearings, and according to the lubrication of the surface, they can be divided into liquid lubrication, incomplete liquid lubrication bearings, and non-lubricated bearings.
When assembling gears, the center lines of the two shafts should first be adjusted to be in the same plane, then the gap between the gears should be adjusted, and finally, the amount of play between the two shafts should be adjusted. A feeler gauge should be used for inspection, and any deviation should be within the allowable range. During the engagement of the gear movement, there should be no abnormal sounds such as grinding.
After assembling the gears, manually rotate the gear one full turn; it should be neither too loose nor too tight. It is important that it can turn more than one full rotation without getting stuck. This is because, during the production process, there is a certain deviation in the runout of the gear rim, resulting in variations in tightness during a full rotation. Adjustments should be made on the tighter side. However, before assembly, it is necessary to check if the gear teeth have been damaged; if so, they must be cleaned thoroughly. If the gears are not assembled properly, there may be jamming, and during operation, the temperature will rise due to high-speed rotation, which may lead to vibrations, so caution is essential.
