Thermodynamic performance of plastic helical gear and steel worm transmission

Abstract:

According to the gear engagement theory, the gearing equation between plastic helical gear and steel worm was carried out. The bulk temperature field of the gear pair was established based on MSC.Patran/Nastran. Use FEM to analyze and gain the inherent relationship between load、buck temperature and environmental temperature in the process of heat balance . By means of Hertz contact theory the correctness was verified on finite element analysis. As was turned out: in the transmission process，heat from the meshing gear tooth surface gradually spread to face and non-working tooth surface, when heat was balanced the highest temperature was around the central pitch circle of the meshing gear tooth and the lowest was on the end gear.