3. Consider a drilling operation in which a 0.5-inch diameter hole is drilled in an aluminum plate that is1.2 inches thick. The drill is rotating at 400 RPM, and the feed is 0.012 in/rev. The specific energy of thismaterial is 0.3 hp-min/in³. Find the power required to complete this operation.

Given data:Hole diameter d=0.5inchesPlate thickness t=1.2inchesDrill speed (RPM) ω=400rpmFeed rate…

Answered: 3. Consider a drilling operation in…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A motorised metal guillotine machine is required to cut 45 mm diameter hole in a plate of 20 mm thickness at rate of 35 holes per minute. It requires a torque of 7 Nm for an area of hole in mm². If the cutting takes 1/10 of a second and the speed of it's flywheel varies from 165 rpm to 145 rpm, calculate 4.1)Energy required to cut a hole 4.2)Energy required for cutting work per second. 4.3)Maximum fluctuation of energy of the flywheel 4.4)Mass of the flywheel having radius of gyrations of 1,5 m
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3. Consider a drilling operation in which a 0.5-inch diameter hole is drilled in an aluminum plate that is 1.2 inches thick. The drill is rotating at 400 RPM, and the feed is 0.012 in/rev. The specific energy of this material is 0.3 hp-min/in³. Find the power required to complete this operation.