Abstract:
Polycrystalline cubic boron nitride (PCBN) tool is another kind of superhard tool after polycrystalline diamond tool. It is known as the green environmental protection tool in the 21st century for its unique advanced cutting methods such as turning instead of grinding, hard machining and dry cutting. PCBN tools are is widely used in metal cutting, which is mainly used for processing various kinds of hardened steel, wear-resistant cast iron and other iron-based materials. This paper introduces the influences of tool composition, tool geometry and cutting parameters on the cutting performance of PCBN tools. On this basis, the main wear mechanism of cutting tools in machining different materials are analyzed, and the cutting performance differences between cemented carbide and PCBN tools are also briefly compared.