Effect of Shift in Speed Turning on Machined Surface Quality

Abstract

This article describes the evaluation of machined material roughness in speed turning on a machining centre Doosan Puma 700 LY. The machined surface of semi-finished products from steel 14 260 was compared at selected cutting conditions. A half of compared samples from steel 14 260 was in the original, thermally untreated condition (mild steel), and the second half of samples was thermally treated (hardened steel, with a hardness of samples 50 HRC). The experiment focused on turning the selected samples in order to evaluate the roughness of machined surfaces. Cutting tool shift was variable during individual measurements. This experiment contributes to a quick orientation in the given issue and points out to optimisation of cutting conditions.