Question: a workpiece of 200 mm length and 50 mm diameter...
A workpiece of 200 mm length and 50 mm diameter must be machined to a diameter of 40 mm. The workpiece rotates at 600 rpm, feed is 0.35 mm/rev for roughing and 0.1 mm/rev for finishing. The allowable depth of cut is 2.2 mm. Assume time taken to return the tool to the beginning of cut 10s and time taken to load and unload the workpiece is 20s. The specific cutting coefficient of the material is 3000 N/mm^2.
A) Time required to finish 500 workpieces
B) Metal removal rate for the finish operation
C) Cutting power required for finish operation