In recent years, with the rapid development of CNC machining technology and the widespread use of CNC machine tools. The application of ultra-hard cutting tools that can achieve high efficiency, high stability. And long life processing has become more and more popular, and many advanced cutting concepts have been introduced. Such as high-speed cutting, hard machining, high-stability machining, car grinding, dry cutting, etc. Superhard cutting tools have become an indispensable tool in modern machining.