The iterative step load curve of the general forming process of spiral bevel gear blank is shown in the figure, including extrusion process and die forging process.
Figure a shows the load at the beginning of the extrusion process of spiral bevel gear blank, which is 0t; Fig. B shows the load when the extrusion process of spiral bevel gear blank is completed, which is 0.538t; Figure C shows the load when the iterative step is 550 after the start of the die forging process of spiral bevel gear blank, which is 0.02t; Figure D shows the load of spiral bevel gear blank after die forging, which is 2.53t.