Abstract

The applications of a new cut-off tool equipped with a grooved rake face are discussed in relation to the cutting performance compared with that of the conventional (flat rake face) cut-off tool. The experimental results indicate the following: 1) cutting surface roughness and chip disposal are improved, and cutting forces are decreased; 2) cutting forces and their fluctuations are markedly decreased as the oxygenjet is supplied to the tool edge at the range of cutting speed that the built-up edges grow; 3) the ceramic cut-off tool is capable of grooving steel work, as the cut-off tool has a grooved rake face and the oxygenjet is supplied to the tool edge.

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