Milling fixes the blank and uses a high-speed rotating cutter to advance the blank and cut out the desired shape and features. Traditional milling is more used for simple contour features such as milling contours and slots, and CNC milling machines can perform complex shapes and features.
Milling cutters are rotary tools with one or more teeth for milling. Each knife tooth intermittently cuts the surplus of the work piece in turn. Milling cutters are mainly used for machining planes, steps, grooves, forming surfaces and cutting off workpieces on milling machines.
Milling machining is a common cold metal machining method. The difference between turning and milling is that in milling, the tool rotates at high speed under the drive of the spindle, and the workpiece being machined is relatively stationary.