Theoretical and experimental research of edge inclination angle effect on minimum uncut chip thickness in oblique cutting of C45 steel

Abstract The minimum uncut chip thickness (MUCT) is an important phenomenon observed both in orthogonal and oblique cutting. Rounding the cutting edge influences initiation of process formation. In a previous study, authors presented theoretical analysis experimental validation on effect inclination angle ? s range 0° to 60° h min radial-free turning C45 steel. current work investigated MUCT steel, for extremely high value . this research, special technique based milling tool machine using sample presented. Enabled model tests unprecedented angles not used research date. samples were machined speed v c = 0.063 m/min. Vertical feed f was determined by association applied slope ( ? 0.60–0.85 mm/m) as 37.8—53.5 ?m/min. parameter measured compensation effects deformation, profilogram analysis. machining experiments carried out with r n 185 ?m. It found that 50° ? 85°, decreases from 12 ?m 4 85°. Increasing 35° resulted up threefold reduction MUCT. results studied confirmed previously reported theory extreme values optimization procedure LSM, flow coefficient k 0.75 critical rake ? cf -64.8°. This feature provides prediction great accuracy value. findings study opens possibility developing new tools finishing operations field angle. addition, introduce area improving surface quality lowering roughness explaining some aspects related wear friction process.