Statistical Analysis of Dynamic Loads on Spur Gear Teeth : Experimental Study

Abstract

Some experimental results on the relation between transmission errors and dynamic loads of spur gears are presented. Using a power circulating type gear tester, the dynamic loads on two pairs of gears, i.e. an accurate one and a rough one, were measured and their dependence on gear speed and tooth load was investigated. The dynamic loads on the accurate gear pair showed recurrent time variations over a wide range of gear speeds. On the other hand, significant randomness of dynamic load was observed with an increasing speed in the rough gear set. An analogue computer simulation was also performed under the experimental condition. Good agreement was achieved between the experimental results and the simulation qualitatively; and it seems to show the propriety of the statistical theory on the estimation of dynamic loads which has already been developed in the previous paper.