Meshing characteristics and strength analysis of equiangular spiral face gear

In this paper we present a new kind of equiangular spiral face gear that can improve the load carrying capability and meshing performance of aviation transmission system. Theoretical model, numerical simulation, and experimental test are combined into an integrated research framework for evaluation of its transmission characteristics. Tooth surface geometry is obtained by analytical means, and a discretization method is used to study important meshing parameters such as contact ratio, pressure angle, sliding ratio, and principal curvature. Performance is evaluated using both theoretical and finite element analysis compared to traditional involute face gears, and verified by experimental measurements of gear tooth stress, deformation, and transmission efficiency. The equiangular spiral face gear has obvious advantages in terms of performance: contact stress and bending stress decrease by 7.21%–9.95% and 12.2%–18.6%, respectively; tooth deformation reduces by 42.2%–54.0%; and transmission efficiency rises by 3.7%–4.1%. And it shows great load distribution and meshing stability as well. Design shows great superiority in load-bearing capability and meshing stability. Through the validation of integrated theory, simulation, and experiment, it proves feasible, giving a new solution and forming a complete technology system for high performance aviation gear transmission.