The process characteristics of CNC five axis machining centers are determined by the power head produced, mainly suitable for various machining types such as drilling, tapping, boring, chamfering, milling, grinding, etc., to meet the machining needs of most customers. The power head has strong applicability and can be easily adjusted for different sizes of cutting tools of the same model according to the type of tool used. The main spindle of the power head has the characteristics of high rotational accuracy, good rigidity, no mechanical wear, and vibration absorption. It is suitable for cast iron, steel, and non-ferrous metal materials. With high processing accuracy, it can be combined with the stroke control of the sliding table to control the movement process of the power head, meeting the process characteristics of various shapes of workpieces. The guide rail and bed of the CNC milling and boring machine are integrated casting parts, and then the guide rail is processed on that basis, and then processed into a guide rail through quenching and grinding.