Before the finite element analysis, first save the three-dimensional model file of spursplit blank created in UG as STP format, and then import it into ABAQUS finite element software. The mesh of each bevel gear is divided into several mesh layers according to the thickness of c30r bevel gear element, and the mesh of each bevel gear is divided into several mesh layers according to the mesh thickness of the bevel gear module, The meshed finite element model is shown in the figure.
Before the simulation processing of spur bevel gear split billet, the rigid displacement of spur bevel gear split billet must be limited first to ensure the accuracy of simulation analysis results. However, in order to obtain the deformation of the straight bevel gear blank in the machining process, it is necessary to make the straight bevel gear split blank deform freely in the simulation of gear cutting. Therefore, three points that are not on a straight line can be selected in the non machining area of the straight bevel gear blank, and the boundary conditions of the blank can be created in the “load” module of the finite element software, so that the upward direction of the thickness of the straight bevel gear blank is the positive direction of the Z axis, and the moving degrees of freedom of these three points in XYZ, YZ and Z directions are limited respectively. Based on the machining method of split spur bevel gear, three vertices of the bottom surface of spur bevel gear blank are selected, and the boundary conditions are created according to the introduced method.