The purpose of function compounding is to further improve the production efficiency of the machine tool and minimize the time used for non machining assistance. Through the combination of functions, the use scope of the machine tool can be expanded, the efficiency can be improved, and one machine can be used for multiple purposes and one machine can have multiple functions. That is, a CNC lathe can realize both turning and milling functions; Or in the milling machine tool can also achieve grinding.

A lathe is a machine tool that mainly uses turning tools to turn rotating workpieces. Lathe is the most important cutting machine tool in metal cutting machine tools. In general machine manufacturing plants, the number of lathes is the largest, also known as machine tools.