The Impact of Micro-texture Distribution on the Frictional Performance of Straight Bevel Cylindrical Gears

In order to alleviate wear on the tooth surfaces during gear transmission and to enhance the anti-seizing capabilities of the tooth faces, this paper proposes micro-textured gears as a solution to this challenge. Firstly, three types of micro-textured gears were designed based on the mechanism of action of micro-textures and the meshing positions during gear transmission. Secondly, finite element simulation tests were conducted with and without micro-textured gears, and the stresses, strains, and wear levels experienced by the micro-textured gears during transmission were analyzed. The study found that torque and rotational speed have a direct impact on the gear surface. Compared to traditional gears, gears with micro-textures distributed above the pitch circle promoted a 51.57% reduction in stress and a 61.81% reduction in strain, also altering the concentration locations of stress and strain on the tooth surfaces, which led to a 50.51% reduction in wear. This research has significant implications for improving the frictional performance of gears, with micro-textures on the tooth surfaces acting as containers for lubricants and metal filings, preventing abrasive wear of the friction pairs on the tooth faces and enhancing the durability of the gears.