Abstract
The precise mathematical model for the tooth surface and transition surface of spiral bevel gears is derived. Taking a pair of spiral bevel gears of a heavy vehicle as an example of calculation and analysis, a finite element model of spiral bevel gears transmission system is established. Through the finite element tooth contact analysis under quasi-static loading and high loading condition, the influences of torque on the root stress distribution, contact stress, and transmission error are discussed, and the results are compared with the empirical formula results. Finally, a contact performance test bench of spiral bevel gear pair is developed, then the root bending stress, contact pattern, and transmission error tests are carried out. These experiment results are compared with analyzed ones, which showed a good agreement.
Highlights
Tooth contact analysis (TCA) technology is widely applied for assessing meshing quality duet to the increasing demand for vibration, strength, and mechanical efficiency of gear in various industrial fields such as aviation, automotive, and civil engineering [1,2]
The new optimization method based on the loaded tooth contact analysis (LTCA) for improving strength and contact performance of bevel gears has been a great concern to scholars worldwide
This model considered the influence of gear and shaft deformation, installation position, and bearing load, and the contact characteristics under quasi-static loading and high loading condition were analyzed through this model
Summary
Tooth contact analysis (TCA) technology is widely applied for assessing meshing quality duet to the increasing demand for vibration, strength, and mechanical efficiency of gear in various industrial fields such as aviation, automotive, and civil engineering [1,2]. Nie et al studied a new method of tooth surface topography modification for improving the meshing performance and correct contact area of spiral bevel gears [17]. Investigated the contact characteristics of hypoid gears under quasi-static condition, and proposed a method for the global optimization of the tooth contact pattern and transmission error of spiral bevel and hypoid gears [20,21]. An accurate finite element model of spiral bevel gear transmission system was established, which was based on the generating principle of spiral bevel gear and meshing theory This model considered the influence of gear and shaft deformation, installation position, and bearing load, and the contact characteristics under quasi-static loading and high loading condition were analyzed through this model. A contact performance test bench of spiral bevel gear pair was developed in this paper, and the bending stress, contact pattern and transmission error test results were obtained for validating FEM results and the reliability of proposed model
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