PT Journal AU Majerik, J Dubovska, R Baska, I Jambor, J TI Experimental Investigation and Measurement of Surface Roughness and Cutting Forces while Turning AlCu3MgMnPb Aluminium Alloy SO Manufacturing Technology Journal PY 2018 BP 66 EP 71 VL 18 IS 1 DI 10.21062/ujep/55.2018/a/1213-2489/MT/18/1/66 DE Surface Roughness; Tangential Cutting Force; Axial Cutting Force; Dynamometer; Aluminium Alloy AB The main aim of this scientific article is to assess the contribution of surface layers by determining the experimental investigation and practical measurement of surface roughness Ra and selected components of cutting forces while external turning of AlCu3MgMnPb aluminium alloy. In these experimental procedures, a number of turning tests have been carried out by using a universal lathe machine tool and cutting forces and surface roughness scientific measuring devices. These realized measurements have been successively investigated and experimentally verified with the prepared trial samples. These presented experimental measurements describes the authors investigation of cutting forces while turning by the piezoelectric dynamometer Kistler type 5001 and surface roughness Ra with the Talysurf CLI 100 measuring device. This scientific article, together with measured and calculated results, is the fundamental that will help to optimizing the quality and used other technological and cutting parameters of turning technological process. ER