The use of plastic is very extensive, and the gears made of plastic are also widely used. Plastic gears have undergone a long course of change in the past few decades, from the change of new materials to important industrial materials to today. Plastic gears have penetrated into many different application fields, such as automobiles, watches, etc. Plastic gears play a role in transmitting torque and forms of motion. In addition to the existing application fields, new and more difficult to process gear application fields will continue to appear, and this trend is continuously developing.
In the future, plastic gears can be applied to helical gear reducers . A new generation of gear helical gear reducers, plastic gear helical gear reducers, has been developed. The introduction of plastic gear helical gear reducers is sure to be a sensation. The noise ratio of plastic gears when they are engaged. Metal gears are much lower, and the application of plastic gears is further broadened. In some applications with large size requirements, plastic gears are often used to replace metal gears. Like the use of plastic gears on washing machine gears, this changes the gear's size limits.
An important reason for the development of plastic gears is the advantages of plastic gear molding and the ability to mold larger, high-precision and high-strength features. How to design a gear configuration that minimizes transmission errors and noise while maximizing transmission power also faces a lot of difficulties. This requires high machining accuracy requirements for the concentricity, tooth profile and other characteristics of the gear.
Because the size of the gear is easily affected by seasonal temperature changes, even the temperature fluctuation caused by opening the door and letting a forklift pass can affect the dimensional accuracy of the gear, so the molder needs to strictly control the environmental conditions of the molding area, and also consider Influence of factors such as stable power supply.
Compared with the requirements of general molding, the processing of high-precision parts requires more attention to details and the measurement techniques required to achieve an accurate level of measurement. The most common plastic gears are spur gears, cylindrical turbines, and helical gears. Almost all metal gears can be made of plastic. Gears are usually formed with split mold cavities. During the processing of helical gears, it is necessary to pay attention to the details because the gear or the gear ring forming the teeth must be rotated during injection.
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