The machine body adoptes optical computerized structure design with the features of wide body and column, precise casting, good stability, strong shock absorption and rigid structure; 3-axis rectangle guuide rail adopted the design of triangle supporting with super HF quenching treatment and fine peripheral grinding; Big precise guiding ball screw equipped with precise angle ball bearing with tightening installation, boasting accurate feeding and strong loading; Turcite-B wearing bit and other friction, parts which touch with rectangle guide rail has good abradability; 3-axis guide rail uses airtight protection, cover, which has character of good chip collection function; Equipped with pneumatic tool replacement device, it is quick and convenient to change the tools, ensuring the high efficient production.