Prediction of Heat Generation of Crossed Axis Gearbox

摘要

Thermal stability of a gearbox with crossed axis like crossed helical drives or worm drives is one of the specific topics of these gearboxes comparing with other drives like gearboxes with bevel or cylindrical gears. Their operation is followed by high power losses of the transmission and occurrence of scuffing. The main cause for overheating is heat generated inside the gearbox due to friction of bearings, frictions in sealing and above all friction between tooth flanks in contact. By application of finite element method, the thermal stability of gearbox was predicted, and this method is verified on the case of crossed helical drive with axial distance of 30 mm. Also, it is shown a possible case of estimation of temperature distribution by changing material of gearbox housing. Based on performed numerical research a new method for prediction of heat generation was proposed.