In the function of Defrom-3D post-processing, the curves of equivalent stress, strain and temperature of spiral bevel gear blank with time can be obtained. However, the change curve of each point is different, and there is no strong regularity. Therefore, only three representative points are taken as the research object. The three points taken are shown in Figure 1. P1 is the upper point of the step between the outer side of the spiral bevel gear blank and the flash during final forging, P2 is the upper point of the spiral bevel gear blank body during final forging, and P3 is the upper point of the step between the inner side and the concave thin layer during final forging.
The variation curves of equivalent stress, strain and temperature at three points of spiral bevel gear with time obtained from post-processing are shown in Fig. 2, Fig. 3 and Fig. 4