Correlation of Plastic Deformation During Metal Cutting With Tensile Properties of the Work Material

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Abstract
An experimental correlation of plastic deformation occurring during metal cutting with the plastic deformation in tension of the work material; an analysis permitting comparison of these two states of strain is presented. Orthogonal cutting of seamless steel tubing was employed for feeds of 0.0025–0.0085 in. per revolution (ipr), and positive rake angles of 25–45 deg. Deformation and forces of cutting were obtained from chip measurement and from a tool dynamometer employing resistance strain gages. The agreement obtained indicates that the tensile properties of the work material may offer a useful index to metal-cutting performance.