Based on the generating principle of generating line of spiral bevel gears with spherical involute, a new method for
building the model of spiral bevel gears with spherical involute is presented by utilizing the modules of part design,
assembly design and kinematic simulation in CATIA. In the part design module of CATIA, the models of base cone,
tangent surface, and generating line are built respectively. And the built models are assembled in the assembly
environment; the simulation of pure rolling is accomplished in the environment of kinematics; and the model of the gear
surface is built using the function of tracks. Then the solid model of the spiral bevel gear is built through the functions of
transferring the model's file format, multi-section sweep and solid fill. Finally, the analysis to the performance of the
bevel gear transmission is conducted. In the environment of the assembly design, the solid model of the gearwheel and
the pinion are inserted respectively, and then the assembly is accomplished by applying the constraints. And in the
environment of kinematics, the meshing simulation of the bevel gear pair is accomplished by applying angle drive. The
research indicates that this method can build the model of spiral bevel gears accurately and rapidly, and the model can
illustrate the gearing correctly.
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