The Experimental Study on the Relationship between Tooth Surface Roughness and Damage of Spur Gears

Abstract

Since gears transmit motion by meshing teeth, it is hard to avoid problems which wear and damage to the tooth surface. Because Tooth surface wear is difficult to predict, the approach to the wear problem still often relies on empirical rules and symptomatic measures. If the undermining by wear can be predicted by mathematical formulas, it may allow engineers to solve wear issues in model-based development, or to consider wear resistance from the design state. Therefore, the development of wear prediction formulas seemed like a very valuable goal, so the authors decided to work on it. In this paper, as the first step for the final goal, the gear driving test was conducted using multiple gears with different tooth surface roughness. Then relationship between tooth surface roughness and wear, or other surface damages, was investigated.