In order to improve the machining performance and machining efficiency of ordinary machine tools, by analyzing the working principle of the numerical control reconstruction unit, the paper puts forward the universally applicable idea of numerical control transformation, and successfully realizes the numerical control transformation of general machine tools. The results show that the modified machine tool improves the performance and efficiency of the machine tool, expands the range of machine tool use, reduces the labor intensity of the workers, and has a higher cost performance and practicality.