Abstract
In this study, the effect of nozzle traverse speed on the geometric tolerances in the drilling of AA 7075 aluminum alloy by abrasive water jet was investigated. Holes were drilled with a diameter of 10 mm using 10 different nozzle traverse speeds (10, 16, 24, 34, 45, 55, 65, 75, 90 and 110 mm/min) and the other parameters were kept constant. Circularity and cylindricity deviation of the holes drilled using different nozzle traverse speeds was measured using a CMM. It was found that the increase in nozzle traverse speed results in increased deviation values from circularity and cylindricity. As a result, increased nozzle traverse speed reduces the amount of abrasive contacting the unit surface and the cutting process does not occur in accordance with the desired geometry. 
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