Keyway-Milling Machine

a metal-cutting machine tool for cutting sunk keyways of uniform cross section or Woodruff keyways in shafts. When an end cutter is used to mill a sunk keyway of uniform cross section, the machine’s spindle carriage undergoes a reciprocating motion, thus providing longitudinal feed, while the tail spindle feeds to the cutting depth. Circular grooving cutters are used for Woodruff keyways. Some machines use both types of cutters to cut two keyways simultaneously.