Better land solved numerical control machine tool batches complex, nicety, small, changeful spare parts machines a problem, be a kind agile, the automation machine tool of tall efficiency, occupy machining gross to making an appointment with especially the sheet of 80% , the treatment of small lot spare parts, more show its peculiar flexibility. Wraparound rise, use numerical control machine tool to have the profit of the following respects: ① raises treatment precision, rose to approve the consistency that the spare parts machines together especially, make product quality stable; ② improves manufacturing efficiency, raise efficiency 3-5 about commonly times, machine tool of center of use CNC Machining can raise productivity 5-10 times; ③ can machine the part with complex form; ④ reduced labor intensity, improved labor condition; ⑤ is helpful for manufacturing management and machining the development of integrated automation CNC Milling