The stiffness of the shaft of transmission has an important influence on the meshing quality of gear pair. Taking the 1st helical gears and shaft of an automatic transmission as the research object, two rigid-flexible coupling models for gearbox with different supporting span were presented, and the accuracy of the models was verified by comparing the contact pattern results of experiment and simulation. Based on this, the meshing misalignment and transmission error of the gear pair were calculated, and the influence laws of supporting stiffness on meshing characteristics of helical gear were analyzed under different torques and speeds. It is shown that when the supporting span is large, the meshing misalignment and transmission error are more sensitive to the change of torque. The thickness of the oil film on the meshing tooth surface is larger when the stiffness of the shaft is smaller. However, the meshing misalignment, transmission error and sliding velocity increase. Further more, the distribution uniformity of load along the direction of tooth width is even worse, and the contact temperature of tooth surface increases. By reasonably increasing the supporting stiffness of the shaft, the stability and reliability of the gear pair can be effectively improved.
Effects of Supporting Stiffness on Meshing Characteristics of Helical Gear Under Multiple Load Cases
Lect. Notes Electrical Eng.
2020-11-05
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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