Study on the Temperature Distribution in the Workpiece during Metal Cutting (1st Report) Experimental Approach Keiji OKUSHIMA, Yoshiaki KAKINO Cutting temperature distribution in the workpiece was investigated. From the temperature distribution measured by the thermocouple constructed with work-material and the inserted constantan wire (0.08mm dia.), the following conclusions were drawn Maximum temperature in the workpiece was observed around the cutting edge and it was proportional to the 1/2

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... ower of the cutting speed. Isothermal lines far beyond the cutting edge were almost parallel to the shear plane, while those far behind the cutting edge were parallel to the machined surface. At a higher cutting speed the temperature of the surface layer in the instance of cutting was higher, but that of inner layer was lower than at a lower cutting speed.