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given-diameter-25mm-half-of-the-drill-point-angle-60-cutting-velocity-44000mm-minute-length-60mm-feedrate-0-25mm-revolution-determine-the-time-needed-to-drill-a-through-hole-




Question Number 63682 by Annmuema last updated on 07/Jul/19
given diameter 25mm  half of the drill point angle =60  cutting velocity=44000mm/minute  length=60mm  feedrate=0.25mm/revolution  determine the time needed to drill a through hole
$${given}\:{diameter}\:\mathrm{25}{mm} \\ $$$${half}\:{of}\:{the}\:{drill}\:{point}\:{angle}\:=\mathrm{60} \\ $$$${cutting}\:{velocity}=\mathrm{44000}{mm}/{minute} \\ $$$${length}=\mathrm{60}{mm} \\ $$$${feedrate}=\mathrm{0}.\mathrm{25}{mm}/{revolution} \\ $$$${determine}\:{the}\:{time}\:{needed}\:{to}\:{drill}\:{a}\:{through}\:{hole} \\ $$

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