Acta Univ. Agric. Silvic. Mendelianae Brun. 2017, 65, 135-143
Published online 2017-02-28

Effect of Shift in Speed Turning on Machined Surface Quality

Pavel Polák1, Petr Dostál2, Katarína Kollárová1

1Department of Quality and Engineering Technologies, Faculty of Engineering, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovak Republic
2Department of Technology and Automobile Transport, Faculty of Agronomy, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

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.


The work described in this paper was supported by the KEGA project no. 035SPU-4/2014 ‘Integration of innovative trends of metal cutting, metrology and quality management into university study’.


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