Superalloys are widely used in aerospace and other fields

and are a kind of typical difficult-to-cut material. PCBN is a kind of superhard tool material

which has excellent performance in processing superalloys

but there are some phenomenon such as tool wear and serious damage in cutting process. High-pressure cooling is a new cooling method

which can effectively reduce the mechanical impact and affect the stress distribution of cutting tools. Therefore

it is important to study the stress distribution of cutting tools under high-pressure cooling. Firstly

tool stress model under high-pressure cooling is established to provide theoretical basis for tool stress variation law under high-pressure cooling; Secondly

the finite element method is used to simulate the stress distribution of cutting tools under different cooling conditions

cutting parameters and cooling pressures

and the influence law of different cutting conditions on the stress of cutting tools is obtained; Finally

the high-pressure cooling test is carried out to analyze the cutting force

stress distribution of tool and tool breakage

which provides a certain technical basis for efficient processing of superalloys and tool optimization under high-pressure cooling.