The establishment of straight bevel gear model is an important link in the preprocessing process of finite element simulation. A reasonable and accurate model can save time and effort, and ensure the accuracy of simulation results. DEFORM-3D basically has no modeling function, so it is necessary to establish two-dimensional or three-dimensional models with the help of other modeling software. DEFORM-3D has built-in data interface, which can realize the input of STL, amggeo, Patran and ideas. The format is the most widely used data format. Many 3D modeling software can output entities as STL files. Make comprehensive use of the respective advantages of UG and Pro / E three-dimensional modeling software to realize three-dimensional modeling.
The selected gear is the differential planetary gear of a car, which meshes with the half shaft gear to realize the rotation of wheels on both sides at different speeds. The forging shape of straight bevel gear is shown in the figure.
The die parameters of final forging straight bevel gear are: number of teeth z = 10, modulus M = 6, pressure angle α= 20 °, sub cone angle δ= 18.44, top cone angle δ F = 24.25, root cone angle δα= 15.57, radial displacement coefficient X = 0.409, tangential displacement coefficient XT = 0.117.