Cutting Characteristics in Micro-turning Processes

Cutting Force and Surface Roughness

Abstract

In this study, we examined the cutting characteristics (micro-cutting force and surface roughness) of micro-turning using a micro-turning apparatus (micro-lathe) and a micro-cutting force measurement device that we developed. Workpieces made from aluminum alloy (A5056), copper alloy (C3604) and stainless steel (SUS303) were used for the turning experiments. In the turning processes, the cutting characteristics were measured at different cutting speeds and different depths of cuts. From these experimental results, it has been made clear that the cutting force depends on the area of chip section, the cutting speed and the workpiece materials. When the area of chip section was 0.1mm2 or less and the cutting force was minute, the surface roughness of aluminum alloy and copper alloy were Ra30-50nm.