As shown in Figure 1, when the axial installation position h of the hypoid gear pinion changes, the change trend of the tooth root bending stress is shown. In the figure, from top to bottom, there is the corresponding hypoid tooth root stress change diagram when h=-0.2mm, -0.1mm, 0mm, 0.1mm, 0.2mm. The left side of the figure is the change of the tooth root bending stress of the hypoid gear pinion, and the right side is the change of the tooth root bending stress of the hypoid gear pinion. Similar to the installation deviation in G direction, the installation deviation in H direction does not cause the position change of the dangerous point of hypoid gear, but causes the change of the maximum principal stress value.
As shown in Figure 2, the meshing position of the hypoid gear in the above figure corresponds to the maximum value of the first principal stress of the tooth root. Compared with the change law of the tooth root of the large and small gears, it can be seen that when h increases in the negative direction, the maximum value of the first principal stress of the tooth root of the large wheel of the hypoid gear increases, and the maximum value of the first principal stress of the tooth root of the small wheel of the hypoid gear decreases, and vice versa. Through the above comparison, it can be found that when the H value changes, it is mainly caused by the change of the maximum principal stress of the tooth root during the intermediate meshing of the large and small gears, and the change of the small wheel of the hypoid gear is more obvious than that of the large wheel of the hypoid gear.
