Milling is a high-efficiency machining method that uses a rotating multi-blade tool to cut a workpiece. During work, the tool rotation is the main movement, and the workpiece movement is the feed movement. In some processing operations, the workpiece can also be fixed, but at this time the rotating tool must move. Milling is generally suitable for machining planes, grooves, and workpieces with various forming surfaces. The high-efficiency processing ability with complex and different surfaces is the embodiment of the good operating performance of the machining center.

           Turning is another common processing procedure in CNC machining. It is mainly completed with a lathe. Turning is used to process rotary parts. The parts are clamped on the spindle of the machine tool through a three-grip chuck and rotated at a high speed. The busbar goes through the knife to cut out the appearance of the product. The inner hole and thread can also be processed on the lathe, and the latter two are low-speed processing.