Aluminum alloys have a number of excellent physical properties that place specific demands on machining. First of all, aluminum alloy has good heat dissipation and can dissipate heat faster than most materials during machining. when CNC machining, the tool cuts the material at high speed and generates a large amount of heat, while the good heat dissipation performance of aluminum alloy can effectively reduce the temperature of the spindle and reduce the damage to the motor and other equipment. Secondly, the density of aluminum alloy is low, the resistance of tool cutting material is low, the machining process is faster and consumes less energy. Therefore, it is possible to machine aluminum alloy workpieces with high-speed machining, while still obtaining a better surface finish. In addition, aluminum alloys have light weight, moderate strength, high toughness, and are easy to color, coat, and oxidize, making them widely used in transportation fields such as airplanes, trains, and automobiles, as well as in electronics, packaging, and other fields.