Design of a computer aided quick-stop device for study of dead metal zone formation

the 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.