The meshing stiffness of hypoid gears can be obtained by substituting the data of gear force, static transmission error and load transmission error into the formula. As shown in the figure, the meshing stiffness calculation results show that the meshing stiffness of hypoid gears changes periodically. The change period of meshing stiffness is the same as that of meshing force of hypoid gears and transmission error of hypoid gears. This period is equal to the meshing period of hypoid gears.
When the meshing stiffness of the hypoid gear is the maximum, it is selected as the starting point of the meshing stiffness. The part between the two red dotted lines is an meshing cycle. In this cycle, the meshing stiffness of the hypoid gear first decreases, then remains basically constant, then decreases slowly, finally rises rapidly, and then enters the next meshing cycle of the hypoid gear.
Different from the change trend of stiffness in the meshing process of spur gears, the meshing stiffness of hypoid gears will not change suddenly, which can make the gears contact smoothly and reduce the meshing impact.