Research and experimental analysis on hot forging cold finishing of spiral bevel gear

The hot forging cold finishing method is used for the experiment. Because the forging simulation of small wheel shows that the die is difficult, the forging experiment is only carried out on the large wheel of spiral bevel gear. Firstly, the forging process is simulated, and then the forging die of spiral bevel gear is actually processed. Then, the forging experiment is carried out on the large wheel of spiral bevel gear by using the forging press of a company, Then the cold forming die is used to trim, that is, the blank is forged into a shape close to the forging, and finally the cold precision forging die is used for finishing to obtain the final spiral bevel gear forging; Compare the simulation with the experimental results, observe and analyze the final results.

The hot forging cold finishing method is used for simulation and experiment. According to the data, the hot forging cold finishing die model and blank model are established, the hot forging cold finishing process is simulated, and the forging with good tooth profile is simulated. Then the factors such as damage, equivalent strain, maximum principal stress and maximum principal rate at local points of spiral bevel gear are simulated, The damage, stress distribution and material flow at different positions in the forming process were obtained. Then the forging experiment is carried out with the spiral bevel gear forging machine of a factory. The results show that the spiral bevel gear big wheel with good tooth shape is processed by hot forging cold finishing, and the forging shape is accurate without obvious defects, which meets the simulation expectation.

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