Wear Numerical Simulation and Life Prediction of Microstructure Surface Unfolding Wheel for Steel Ball Inspection

摘要

Wear is the main failure form of unfolding wheel for bearing steel ball. When the wheel wear reaches a certain level, the unfolding effect to the surface of the steel ball is invalid. Aiming at the life prediction problem for the unfolding wheel, according to analysis the wear profile and wear mechanism of the unfolding wheel drive surface, the main wear type of the unfolding wheel drive surface is determined as adhesive wear. A discrete Archard adhesion wear model is established based on the classical Archard adhesion wear model combined with the finite element method. Using the ANSYS software to simulate the wear of smooth surface unfolding wheel and microstructure surface unfolding wheel respectively, obtaining the relationship between wear depth and number of wear. Then establish the critical failure condition of the unfolding wheel according to the unfolding wheel structure and the unfolding principle. And based on the above theory, establish the wear life prediction model of the unfolding wheel. Finally, the effectiveness of the life prediction model is verified by an example. It is also found that the wear life of the microstructure surface unfolding wheel is about 10% higher than that of the smooth surface unfolding wheel. It provides a theoretical basis for the practical application of the surface microstructure of the unfolding wheel for steel ball inspection.