CNC Milling processing mainly depends on the rotation of the cutting tools. Milling is divided into horizontal and vertical milling; the plane is formed by the blade on the edge outside the milling cutter. Vertical milling is formed by the end face blade of the milling cutter. Getting higher cutting speed and higher productivity can increase the milling speed. However, due to the milling cutter tooth cutting, cutting out, forming an impact, the cutting process is easy to produce vibration, thus limiting the improvement of the surface quality.