In manufacturing processes, milling is a material-removal method in which a rotating multi-point cutter generates geometrical surfaces (flat, helical, contoured, or surfaces of revolution) through the combined rotary motion of the cutter and the translational feed motion of the workpiece; the direction relationship between cutter rotation and feed defines up milling (cutting force tends to lift the workpiece) versus down milling (cutting force tends to pull the workpiece into the cutter, requiring backlash-free feed mechanisms). Milling cutters are classified by their action into profile-sharpened cutters, which always produce flat surfaces regardless of tooth shape, and form-relief cutters, whose cutting-edge profile is itself a replica of the desired job profile and which are resharpened only on the rake face.
In manufacturing processes, milling is a material-removal method in which a rotating multi-point cutter generates geometrical surfaces (flat, helical, contoured, or surfaces of revolution) through th…