CNC machine tools are metal cutting machine tool manufacturing. Modern machinery manufacturing methods of processing machinery parts Many CNC machine tools are metal cutting machine tool manufacturing. In addition to cutting, there are casting, forging, welding, stamping, extrusion, etc., but those who require high precision and surface roughness requirements of the smaller parts, generally need to be in the processing of mechanical parts, Machine tool with the cutting method for the final processing. The metal cutting machine is a cutting method of metal blanks into machine parts of the machine. In the machine data show that in 2010, CNC metal cutting machine tool growth, production increased 66.71% year on year growth rate increased 67.17 percentage points over the previous year. In the past 10 years, China's CNC metal cutting machine tool production compound annual growth rate of only 31.93%. 2010 growth data means that the development of CNC metal cutting machine tools have entered a new stage.