Jixie chuandong (Feb 2022)
Influence and Analysis of Trapped-oil on Output Characteristic of Gear Motor
Abstract
To clarify characteristics of trapped-oil of gear motor and its influence on output torque and output speed， in terms of meshing and oil trapping process of motor gear pair， the medium pressure distribution on the tooth flanks and the solution model of oil trapping， the coupling calculation formulas of output torque， output speed and trapped oil pressure are established. The example calculation and result analysis are also conducted. The results show that characteristics of the connection between the expanded trapped oil and the injection medium， the compressed trapped oil and the release medium through the unloading groove determine that the trapped oil phenomenon of the gear motor is lighter than that of the gear pump， and the conventional symmetrical double rectangular unloading groove can meet the unloading requirements of trapped oil. Trapped oil can effectively suppresses torque ripple. The more sufficient the unloading area is， the better is the connection through the unloading groove， and the more obvious is the suppression effect， but the less obvious is the suppression effect of speed ripple. The research results provide a certain theoretical basis for further research and development of high-quality gear motor.
