Holes are to be drilled on the circumference of a circle with regular angular spacing. If a CNC machine is used it should essentially
Have one indexing head mounted on the machine table
Have a CNC rotary axis of motion to rotate the table, about Z-axis (inaddition to X, Y and Z axes of rotation)
Be a CNC milling machine with contouring control
none of the above
(D) none of the above
Explanation: