Study on the Dynamic Characteristics of Herringbone Planetary Gear System with Space Shafts Angle

doi:10.3901/JME.2023.01.141

Abstract

Abstract: The space shaft angle axis directly affects the meshing position and dynamic characteristics of the gear tooth surface. By decomposing the space shaft angle into an axis plane (a plane composed of two gear axes) and a vertical plane (a plane passing through the axis and perpendicular to the axis plane), and the equivalent displacement of the axis angle error in the two planes along the meshing line is derived. Then analyze the influence of the error on the gear meshing rigidity. Taking the input side as the origin, the shaft intersection angle is positive when the tooth surfaces of the output side are far away from each other. A three-stage model is established by considering the left and right torsion flexibility of the herringbone planetary gear, a new dynamic model of the herringbone planetary transmission system with space shafts angle is established, and the influence of the intersection angle of the planetary gear shaft on the dynamic characteristics of the gear is analyzed. The results show that the influence of vertical plane angle on meshing stiffness and dynamic meshing force is greater than that of shaft plane angle. When the spatial axis angle increases, the internal and external meshing stiffness decreases obviously, and the change degree of internal meshing is greater than that of external meshing. The dynamic meshing force will increase in the input side and decrease in the output side with the positive increase of the space shaft angle, and the opposite is true when the negative increase is observed. The research results provide theoretical basis and technical support for the design and control of the dynamic performance of planetary gear system.

Key words: herringbone planetary gear, space shaft angle, dynamic modeling, dynamic meshing force

CLC Number:

TG156

XU Xiangyang, LI Long, REN Bo, ZHU Caichao. Study on the Dynamic Characteristics of Herringbone Planetary Gear System with Space Shafts Angle[J]. Journal of Mechanical Engineering, 2023, 59(1): 141-150.

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