Reaming honing cutter brazed with cubic boron nitride superhard abrasives for processing holes in materials difficult to process

The invention discloses a brazed cubic boron nitride superhard abrasive reaming and honing tool for hole machining of difficult-to-machine materials, comprising: a cutter bar and a cutter base; a processing part and a guide part are arranged on the cutter base, wherein the The processing department is composed of cutting part, finishing part and retracting part. The present invention adopts the cubic boron nitride abrasive sequence arranged in a blade shape and brazed with the tool matrix, which improves the holding strength of the bonding agent on the abrasive grains, prevents the abrasive from falling off prematurely, prolongs the tool life, and improves the tool life at the same time. The designability of the blade structure; the use of upper/lower linear cutting edges and spirally distributed chip removal grooves enhances cooling, lubrication and chip removal, which can effectively reduce the grinding force and temperature, suppress the generation of surface defects, and prevent tool surface clogging, further extending tool life.