If customers want to get machined parts, they will make full use of rotating and moving tools to fix the correct workpiece.Milling refers to the use of rotating multi-edge tools to cut the workpiece, is a high efficiency machining method. When working, the tool rotates (for main motion) and the workpiece moves (for feed motion) . The workpiece can also be fixed, but the rotary tool must also be moved (both the main motion and the feed motion are accomplished) . Milling machine tools are horizontal or vertical milling machine, as well as large door-type milling machine. These machine tools can be either conventional or CNC. Use a rotary milling cutter as a cutting tool. Milling is generally carried out on a milling or boring machine suitable for machining flat surfaces, grooves, various shaping surfaces (such as splines, gears and threads) and special shapes of dies.