Abstract
Experiments were conducted with the main objective of improving the precision of drilling small-diameter, deep holes in austenite stainless steel (JIS SUS304). In the experiments, the step feed amount, rotation speed, and feed rate were varied and the thrust force and cutting temperature were measured to investigate the effect of cutting conditions on hole properties in drilling small-diameter deep holes. The results show that a combination of step feed amount and feed rate can reduce thrust force and drilling time, and that making the step feed small can suppress the cutting temperature.
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