Aface milling operation is performed on a rectangular cast iron workpiece that is 300 mm long by 40 mm wide by 58 mm thick, using 4-teeth 50-mm diameter high-speed steel milling cutter. the milling operation reduces the thickness of the piece to 50 mm in one pass. the cutting speed is 0.60 m/s and chip load is 0.22 mm per tooth. calculate the following: a. the rotational speed (rpm) of the cutter b. the machining time (mm) c. the metal removal rate (mm^3/min) a peripheral milling operation is performed on the top surface of a rectangular workpart, which is 400 mm long times 60 mm wide. the milling cutter, which is 80 mm in diameter and has five teeth, overhangs the width of the part on both sides. cutting speed = 70 m/min, chip load 0.25= mm/tooth, and depth of cut = 5.0 mm. determine: a. the actual machining time to make one pass across the surface and. b. the maximum material removal rate during the cut. in a machine shop, there is only one drill press available. five holes (12 mm diameter) need to be drilled in a 50 mm thick steel plate. three holes are blind and arc 30 mm deep. the remaining two holes arc through holes. at the moment there is only one drill available in the machine shop with a diameter of 12 mm and point angle of 118 degree. the drill can achieve a tool life of 1 minute at a cutting speed of 16 m/min (vt^0.25 = c). the used cutting speed is 15 m/min and feed of 0.2 mm/rev, the used drill press has a rated power of 450watts with an efficiency of 90%. if the specific energy of steel plate is 2.0 w-s/mm^3, then provide detailed analysis for the following question. a. can this operation be performed using the available drill press? b. can the available tool drill all the 5 holes?