Abstract
In order to enhance drilling efficiency, a conventional machine tool and conventional drills are used in the drilling of aluminum alloys A2017–T3 and A6061–T6 with TiN coated SKH56 drills at high feed rates of 0.5 mm/rev and 1.0 mm/rev and the following cutting variables, cutting forces, drill life, drill wear, chip shape, burr shape, heat generation, and chip temperature are examined. Results show that satisfactory results in tool strength, drill life, and wear can also be obtained even with conventional drills at high feed rates. Besides, heat generation during high-feed drilling is lower than in normal drilling as made evident by the high chip disposal rate due to the dissipation effect of cutting temperature. It is clear from the results that high-feed drilling is possible with conventional drills.
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