Numerical control machine tool is the numerical control machine tool (Computer numerical control machine tools) abbreviation, is one kind has the procedure control system the automated machine tool. The control system is capable of logically processing a program with control codes or other symbolic instructions and translating it into a digitized representation of the code which is input to the numerical control device via the information carrier. After the operation processing by the numerical control device sends out each kind of control signal, controls the engine bed the movement, according to the drawing request shape and the size, automatically processes the part. CNC machine tools to solve the complex, sophisticated, small batch, multi-species of parts processing, is a flexible, high-performance automated machine tools, on behalf of the modern machine tool control technology development, is a typical mechatronics Of products.