Engineering, 02.12.2019 20:31 shakira11harvey6
Agundrilling operation is used to drill a 9/64-in diameter hole to a certain depth. it takes 4.5 minutes to perform the drilling operation using high pressure fluid delivery of coolant to the drill point. the current spindle speed = 4000 rev/min, and feed = 0.0017 in/rev. in order to improve the
surface finish in the hole, it has been decided to increase the speed by 20% and decrease the feed
by 25%. how long will it take to perform the operation at the new cutting conditions?
Answers: 1
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Agundrilling operation is used to drill a 9/64-in diameter hole to a certain depth. it takes 4.5 min...
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