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It is indispensable for the low-speed heavy-duty gear, especially for rolling equipment, the impact load of the billet biting into the rolling is very large, and these peak loads must be taken into account, and the overload strength check is separately performed. Gear design, assembly test run and design calculation of the gear are the key to ensure the normal operation of the gear, but factors such as manufacturing, assembly and commissioning will also seriously affect the future use of the gear. Combined with the characteristics of large modulus, low speed and heavy duty hard toothed gears, the author believes that the following links should be guaranteed in the process.
The practice of controlling the heat treatment process proves that many gear failures are caused by improper heat treatment. Vacuum carburizing is generally used in foreign countries to ensure the bending strength of the root. If the vacuum carburizing process is not used, the root peening method can be used to remedy the residual root stress and the root can be removed. Bending strength.
Disc gears should be assembled as much as possible. If the teeth are ground first and the Wuxi vacuum pump is installed on the shaft, the actual accuracy after assembly will be affected, such as radial runout. . The post-grinding process can effectively eliminate this drawback. Therefore, if the processing conditions permit, the grinding process should be used as much as possible after the first grinding.
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