After the solution is completed, the equivalent stress of the two-dimensional contact of the concave spur gear is displayed by using the ANSYS general post processor, as shown in the cloud diagram and local enlarged diagram of the equivalent stress distribution of the concave spur gear contact. It can be seen from the figure that there is a certain difference between the equivalent stress of concave spur gear contact and smooth form. The equivalent stress distribution area of concave spur gear contact is relatively large, while the equivalent stress distribution area of smooth form spur gear is relatively small; The maximum contact equivalent stress of the concave spur gear appears at the contact position between the top of the big gear and the root of the pinion, and the maximum equivalent stress is 1362mpa; The maximum equivalent stress of smooth spur gear is 1821mpa, and the peak value of contact equivalent stress of concave spur gear is obviously less than that of smooth spur gear. The equivalent stress value of the contact area between the big gear and the small gear is 908-1211mpa.
