COMPARATIVE ANALYSIS OF STRUCTURE PERFORMANCE OF PDC CUTTER TOOTH SURFACE AND INTERFACE MATCHING PAIR

With the improvement of research on the tooth surface and interface, the rock breaking technology of a polycrystalline diamond compact (PDC) bit has witnessed significant advancements and widespread applications in various domains. However, the current research on the tooth surface and interface is largely independent of each other, lacking integration between the two. This study aims to explore the influence of the connection between the tooth surface and interface on cutting efficiency and failure mechanisms during PDC bit cutting operations. Six different mating structures are selected for analysis, and the cutting process is simulated using Abaqus software in a consistent environment. The study examined the crushing specific energy, stress distribution, cutting force and temperature rise effect of different mating structures. Comparative analysis revealed that the efficiency and failure mechanism of the cutter are influenced by the interface shape, both within the same tooth shape and across different tooth shapes. Among the selected mating structures, the saddle -tooth surface with a radial interface exhibited superior performance in all aspects and demonstrated significant improvements. The findings provide a theoretical foundation for the study of the mechanism behind PDC cutter mating structures.