The difference between the heart and the milling machine, I feel like almost! Is not the diameter of the processing machine to be smaller?
Of course, walking machine is more suitable for small diameter turning, is the processing of different ways.
This is not directly related to the diameter of the work.
Turning and milling machining center is the turret drive tool movement, the spindle and the workpiece does not move or just rotate.
Simply speaking, take the heart of the lathe tool does not move, the spindle with the workpiece to do interpolation movement.