The Effect of Pick Profile on the Cutting Performance of Point Attack Picks

摘要

Tungsten carbide tipped pointed attack picks is widely used in mechanical machinery such as roadheaders, continuous miners and longwall shearers. Great efforts have been made to investigate the interaction between point attack pick and rock. However, the research on the investigation of pick profile on the cutting performance is still a subject little investigated by the scientific community. In this study, the rock fragmentation process is simulated using a 2D discrete element code, PFC~(2D). In the simulations, four types of pick tip geometries (mushroom insert, bullet insert, conical insert, and cap) were employed to investigate the effect of pick profile on the cutting performance of point attack picks. The forces acting on the pick and crack propagation process were continuously monitored during the simulations. The preliminary results of cutting performance of the picks under different cutting scenarios were analyzed.