Gear transmission is one of the gears of plastic gears. Due to its light weight, low transmission noise, high temperature resistance and high load capacity, it is widely used in various fields. In the gear transmission, the gear transmission is required to be accurate, stable and uniform, especially for high-end mechanical products, which require higher gear precision.
An important feature of plastic products is the nominal wall. The thickness of the nominal wall will affect the strength, cost and accuracy of the part. The control of noise and noise in the gear transmission process is particularly important. The generation of the noise is mainly related to the radial runout of the gear, the cumulative error of the pitch, and the tolerance of the center distance of the housing. There is a southern country incense. At the same time, it should be known that the production of the mold plays a decisive factor in the accuracy of the gear. The precision of the mold making is crucially related to the processing method and processing technology.
With the development of science and the light weight requirements for gear products, gears have been transformed from metal gears to plastic gears because plastic gears require better compatibility, durability and wear resistance, as well as long life requirements. Plastic gear grease can reduce noise, reduce wear and prolong life. The gear grease of synthetic lubricating oil, and the appropriate addition of extreme pressure additives and solid lubricants, can not only improve the bearing capacity of the tooth surface, but also improve the transmission efficiency and extend the service life of the gear.
The plastic gear is essentially a plastic structural member whose main function is used for the transmission of power and motion. Therefore, the plastic gear structure must follow the rules of the transmission part design and the structural design of the plastic structural part to carry out comprehensive design. The gear teeth are an important part of the realization of the transmission, and are the core of the whole gear. The two aspects of the gear tooth design should be noted. One is the tooth shape correction and the other is the balance tooth thickness.
Tooth shaping: When the plastic gear is machined, the tooth formation is ensured by the shape of the mold cavity. At the same time, since the cavity is mostly processed by wire cutting, there is no undercut in the metal gear processing. However, the absence of undercut does not mean that the tooth shape does not interfere, so it is necessary to correct the tooth shape to ensure that the plastic gear has a good meshing profile.
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