By analyzing the equivalent stress distribution obtained from each group of simulation experiments, it is found that the equivalent stress distribution of bevel gear blanks of different sizes in scheme a and scheme B is basically the same, and the maximum equivalent stress is 301 MPa. By analyzing the equal effect strain distribution obtained from each group of simulation experiments, it is found that the equal effect strain distribution of bevel gear blanks of different sizes in scheme a and scheme B is basically the same, but the maximum equal effect strain is different. The table shows the maximum equivalent strain of bevel gear blanks of different sizes in schemes with different die structures, It can be seen from the table that the maximum equivalent strain of bevel gear blanks of different sizes under scheme a is less than that under scheme B.
| Blank outer diameter (mm) | Maximum load (KN) scheme a | Maximum load (KN) scheme b |
| 170 | 18.9 | 25.1 |
| 175 | 14.7 | 21.1 |
| 180 | 17.8 | 28.6 |
Based on the above analysis, the maximum load required for the forming of billets of different sizes under scheme a is less than that under scheme B, and the equivalent effect variation is also small. Therefore, the die structure of scheme a is more suitable for the precision forging process of automobile rear axle driven bevel gear.