CBN 볼 엔드밀의 최적 절삭조건에 관한 연구- I

A Study on the Optimum Cutting Conditions of CBN Ball Endmill- I

The needs to machine hardened steels with high productivity and good surface integrity have been increased in the dies ＆ molds industry. This paper presents some experimental results on the CBN ball endmilling for hardened tool steel. This investigation concerns on the effects of cutting speed and cutting fluids on the cutting performance such as cutting forces, tool wear, and surface finish. The wear of CBN ball endmill for each cutting conditions were also examined through the microscopic observation. It has been found out that the higher cutting speeds with cutting fluids result in better cutting performance.