Studies on Frictional Loss, Temperature Rise and Limiting Load for Scoring of Spur Gear

Abstract

By means of the FZG spur gear testing machine the frictional loss of engagement of gears, the temperature rise of tooth, and the limiting load for scoring were investigated using commonly used mineral oils. The modules of test gears were changed widely from module 2 to module 6 and the coefficient of addendum modification was also changed widely, i.e. the position of the path of contact on the line of contact was very widely changed, that is, from an extremely eccentrical position to the standard position. The formula for calculation of the limiting load for scoring, the frictional loss, and the temperature rise of tooth was found and the relationships between them was clarified.