FINISH MACHINING OF THE CUTTING INSERTS FROM CUBIC BORINE NITRIDE BL GROUP COMPOSITE

Finishing methods of machining superhard composite’s working elements based on cubic boron nitride BL group are considered. The results the microgeometry formation research cutting inserts’ surfaces during by free powders synthetic diamond, grinding wheels and a method vibro-magnetic-abrasive (VMAM) presented. It is shown that VMAM friction between abrasive particles result in microremoval material, which reduces roughness surfaces. established additional fine with 14/10 mkm diamond powder provides absence defects left pre-machining. high-quality rounding edges inserts less an increase strength wear resistance metal-cutting tools high-speed under conditions significant loads.