In a turning operation on stainless steel with a hardness of 200 HB, the cutting speed is 200 m/min, feed is 0.25 mm/rev, and depth of cut is 7.5 mm. How much power will the lathe draw in performing this operation if its mechanical efficiency, E, is 90%. The specific energy value for the material is known to be 2.8 N-m/mm3

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?