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In a single pass drillingoperation - a through hole of15 mm diameter is to bedrilled in a steel plate of 50mm thickness. Drill spindlespeed is 500 rpm - feed is 0.2mm/rev and drill point angleis 118o. Assuming 2 mmclearance at approach andexit - the total drill time inseconds is

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In a single pass drillingoperation - a through hole of15 mm diameter is to bedrilled in a steel plate of 50mm thickness. Drill spindlespeed is 500 rpm - feed is 0.2mm/rev and drill point angleis 118o. Assuming 2 mmclearance at approach andexit - the total drill time inseconds is






 
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