AUTHORS: János Kundrák, Angelos P. Markopoulos, Tamás Makkai, Antal Nagy

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ABSTRACT: In this paper, the influence of feed per tooth and cutting speed on cutting forces is investigated. More specifically, various values of the ratio of depth of cut to feed per tooth, namely chip ratio, are investigated, at 200, 300 and 400 m/min and the cutting forces at a coordination system attached to the workpiece are measured. These are translated into a coordination system attached to the tool edge and then, specific cutting forces are calculated for each case. It is of special interest the area where chip ratio receives values lower than 1, in the so-called inverse cutting area. The results indicate that under these circumstances machining efficiency is increased and at the same time load on cutting tools is decreased

KEYWORDS: Face milling, chip ratio, surface rate, machining efficiency, specific cutting forces, inverse cutting

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