Abstract
This paper investigates the effect of a gear tooth peeling on meshing stiffness of involute gears. The tooth of the gear wheel is symmetric about the axis, and its symmetry will change after the gear spalling, and its meshing stiffness will also change during the meshing process. On this basis, an analytical model was developed, and based on the energy method a meshing stiffness algorithm for the complete meshing process of single gear teeth with peeling gears was proposed. According to the influence of the change of meshing point relative to the peeling position on the meshing stiffness, this algorithm calculates its stiffness separately. The influence of the peeling sizes on mesh stiffness is studied by simulation analysis. As a very important parameter, the study of gear mesh stiffness is of great significance to the monitoring of working conditions and the prevention of sudden failure of the gear box system.
Highlights
Gearbox is one of the most important components in mechanical industry and daily life.With constant development of modern industrial technology, fault monitoring of gearbox is more and more valued in research field [1,2,3,4,5,6,7,8,9,10]
As the key component of gearbox, the study of gear fault diagnosis method [11,12,13,14] is of great significance
Aiming at the limitation in the existing meshing stiffness algorithm for gear peeling faults, based on the energy method, a gear peeling meshing stiffness algorithm was proposed in this paper
Summary
Gearbox is one of the most important components in mechanical industry and daily life. Symmetry 2019, 11, 609 trapezoid and the transition curve part into a rectangle This method can calculate the mesh stiffness of the gear more accurately, but the difference between the simplified tooth shape and the actual tooth shape is large. Based on the potential energy method, Zhao Shubin [28] studied the time-varying meshing stiffness of the peeled out gear, and calculated the time-varying meshing stiffness of different peeling sizes. The proposed algorithm takes the influence of the peeling cavity on the subsequent meshing process into account and makes up for the deficiencies of the current algorithms, so that the time-varying meshing stiffness of the peeling fault can be closer to the actual and provide the parameter support for the dynamic response model of the gear system. Based on the established model, the influence of varying peeling depth and width on time-varying meshing stiffness is studied
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