Cutting of Cemented Carbide with Diamond Coated Carbide End Mill

—Fundamental Study on Cutting Mechanism under Fine Feed Rate—

Abstract

This paper deals with the cutting mechanism against cemented carbide by using a diamond coated carbide end mill. The influence of tool wear, cutting force, and machined groove integrity on the cutting of cemented carbide was investigated experimentally. The ball end mill with a diameter of 6mm was applied under the condition of air-blow supply. As results, the coated diamond film on the rake face was immediately flaked when the grooving length was less than 20mm. However, the cutting force was decreased by flaking the coated film, and the stable cutting was achieved without any damage to the base material of ball end mill until the grooving length was 800mm.