Friction Property of DLC Coated Tool Rake Face in Intermittent Cutting of Aluminum Alloy

Abstract

In this study, orthogonal intermittent cutting test for aluminum alloy was conducted under dry condition, and friction properties of tool rake face were evaluated for DLC coated tool and non-coated carbide tool. The initial friction coefficients of tool rake face were around 0.8 for both DLC coated tool and non-coated carbide tool. However, as increasing cutting distance, the friction coefficient of DLC coated tool remarkably decreased to a lower value of 0.3, even though that of non-coated carbide tool was maintained the higher value.