Size Determination of Abrasive Particles that Penetrate into the Wedge-Shaped Gap of Gear Teeth
Abstract
In this paper, we consider the movement of abrasive particles located in the wedge-shaped gap of gear teeth. These particles penetrate into the wedge-shaped gap between friction surfaces. In the event that the friction force between the abrasive particle and the friction surfaces is greater than the forces that prevent the penetration of the abrasive particle, which arises from the normal force, the abrasive particles are pressed against the friction surfaces. It was found that the largest size of abrasive particles that penetrate into the wedge-shaped gap of the gear teeth with an increase in the friction coefficient from 0.01 to 0.07 increases by more than 20 times while an increase in the meshing modulus from 0.001 to 0.025 m doubles in the presence of lubrication. It is proposed to consider the wear of gears as a process that occurs with the active and passive participation of abrasive particles. The wear of the gear teeth with the active participation of abrasive particles occurs in the wedge-shaped gap between the gear teeth at the frictional force of the surfaces before they are crushed. Wear with the passive participation of abrasive particles occurs in the contact zone of the gear teeth after crushing of abrasive particles due to the force interaction of the protrusions of the roughness of the friction surfaces.