The structure of Gleason spiral bevel gear is complex. In order to accurately simulate the stress condition of spiral bevel gear under working condition, it is necessary to establish an appropriate analysis model to be closer to the actual situation. Considering the influence of the calculation accuracy and the calculation scale of the finite element model, some local features are simplified according to the Saint Venant principle.
For the analysis of spiral bevel gears, the simplification of the model mainly starts from the following aspects:
① Ignore the key, fixed bolt and hole features that only connect the spiral bevel gear and shaft during the working process;
② Ignore the thread, chamfer features and transition fillets of the driving and driven wheel end faces, and distribute the mass equivalently.