The machinability of aluminum alloy turning parts is a general term for aluminum-based alloys. By adding alloying elements such as Cu, Si, Mg, Zn, Mn, etc., while maintaining the advantages of pure aluminum and light weight, its alloy is greatly improved. "Strength", some types can approach or exceed high-quality steel, and become an ideal structural material, which is widely used in machinery manufacturing, transportation machinery, power machinery and aviation industry.