Abstract
© The Author(s), under exclusive licence to Shiraz University 2025.To investigate the motion characteristics of a curve-face gear (CFG) composite mechanism, a geometric and kinematic model was developed based on the gear envelope principle. The axial motion behavior of the theoretical model was analyzed, and the effects of structural parameters were examined through dynamic simulations. The internal velocity distribution and the influence of working condition parameters on dynamic meshing force and torque were studied. Tooth surface contact stresses and load distribution were assessed using finite element simulations. The results indicate that increasing the eccentricity of the driving gear leads to greater fluctuations in axial displacement, velocity, and acceleration. A higher CFG order corresponds to a shorter fluctuation period. The discrepancy between theoretical and simulated axial displacement was 2.44%, confirming the validity of the model. The amplitude of dynamic meshing force and torque increases with higher damping and decreases with greater stiffness. Increases in rotational speed and load torque significantly raise the amplitude and frequency of force fluctuations. The tooth contact primarily occurs on the inner side of the gear surface. The specially designed pitch curve of the CFG reduces peak elastic deformation of the driven gear and leads to a more uniform distribution of contact force and pressure.
NETL
NSTL
Springer Nature