Question 4:A motorised metal guillotine machine is required to cut 45 mm diameter hole ina 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 mm?. If the cutting takes 1/10 of a second andthe speed of its 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 gyration of 1.5 m.

Given data: dh=45 mmt=20 mmn=35 holes/nimE=7 N.m/mm2tc=110sec Need to determine the energy required…

Answered: Question 4: A motorised metal…

Question 4: 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

Precision Machining Technology (MindTap Course List)

2nd Edition

ISBN:9781285444543

Author:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Publisher:Peter J. Hoffman, Eric S. Hopewell, Brian Janes

Chapter5: Turning

Section5.3: Machining Operations On The Lathe

Problem 5RQ: Calculate spindle RPM and machining time for cutting a 1.5" diameter 4" long at 225 SFPM using a...

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of 7 Nm for an area of hole in mm?. If the cutting takes 1/10 of a second and
the speed of its 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 gyration of 1.5 m.

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