Analysis of upsetting forming of mechanical gear
The equivalent stress of initial cylindrical blank upsetting forming of mechanical gear is obtained by simulation calculation, as shown in Fig. 1.
From Figure 1 It can be seen that in the upsetting process of the initial cylinder blank of mechanical gear, the equivalent stress of upsetting parts is different under different simulation time; at the beginning stage, the equivalent stress of upsetting parts with different radii has no difference. With the continuous upsetting, there are differences in the equivalent stress of upsetting parts at different radii, and the larger the radius, the smaller the equivalent stress, but the difference of equivalent stress in three different positions At the end of upsetting, high stress is maintained in the upsetting part. In the high strain region of the mechanical gear blank, the corresponding equivalent stress field gradually decreases along the radial direction from the inside to the outside, and finally tends to be stable. The distribution of the overall equivalent stress field is relatively uniform.
Analysis of die forging of mechanical gear
The simulation results show that the equivalent stress of the upsetting part is shown in Fig. 2. From Figure 2 It can be seen that in the forging process of mechanical gear upsetting parts, in different simulation time, the equivalent stress of die forging parts is different; in the beginning stage, there is no difference in the equivalent stress of upsetting parts at different radii. With the continuous forging process, there are differences in the equivalent stress of upsetting parts at different radii, and the larger the radius, the smaller the equivalent stress, but the equal effect of three different positions The results show that the force difference is small; when upsetting the die cavity formed by the die forging die, due to the complexity of the die cavity, large plastic deformation occurs again, and the distribution of the equivalent stress field of the whole die forging part is relatively uniform.