Öztürk, SabriAltan, Erhan2021-06-232021-06-2320121678-58781806-3691https://doi.org/10.1590/S1678-58782012000400011https://hdl.handle.net/20.500.12491/7106The use of quick-stop device allows observing a sequence of frozen images focused on the chip formation area when machining in orthogonal turning tests. This work records the development of a quick-stop device employing a servo motor. The present invention relates generally to a quick stop device, for combination with a cutting machine that is able to abruptly interrupt the cutting process between a cutting tool and the surface being cut. A dead metal zone is clearly seen when using rounded-edge cutting tools. In this study, variation of the dead metal zone is examined with the computer aided quick-stop device (CAQSD). It is clear from the experimental photomicrographs that as the cutting edge radius increases, dead metal zone increases.eninfo:eu-repo/semantics/openAccessDead RegionRounded-edge ToolComputer Aided Quick-stop DeviceArticle10.1590/S1678-587820120004000113445015052-s2.0-84874682524Q2WOS:000314930100011Q4