The degrees of freedom� of a machine refer to the number of independent axis along or about one can obtain relative motion between the tool and the workpiece.� Obviously one can achieve this either by moving the tool or moving the workpiece.� DOF does not include the spindle rotation or tool translation which is responsible for the cutting action.� (Instead is concerned with the motions which bring the workpiece into the cutter, or which determine the positions between the workpiece and the cutter.)
	Drill press generally just has 1 DOF- move drill bit up and down into workpiece
	Lathe will generally have two-- move along the center axis of workpiece, and move in and out radially.
	3 DOF let one move the tool to any point on the workpiece (within limits of machine, and interference limits-- ie a 3 DOF mill can�t mill on the bottom surface).
	2 1/2 DOF = RDPL DynaMyte
	More than 3 DOF generally allow one to rotate table or workpiece to achieve correct angular relationship between workpiece and cutter.�� This can help to reduce the number of separate fixturing steps and achieve smoother contours.
	5 DOF machines generally more common than 4 DOF machines.
	Past 5 DOF is redundant- but sometimes occurs.� It lets you move around obstacles.