Drilling , tapping, chamfer, bearing, milling face thread, handle and tower. The product is X, Y, Z three-axis servo direct control semi-closed loop vertical machining center, xyZ axis are ball rolling linear guide, guide load is large, wide span, high accuracy, XYZ direction is 25MM heavy load. The structure and size are compact and reasonable. The main shaft is driven by servo motor through synchronous belt. Can achieve a variety of disc, plate, shell, CAM, mold and other complex parts once clamping, can complete drilling, milling, boring, expanding, reaming, rigid tapping and other processes processing, suitable for the production of many varieties, small and medium-sized batch products, can meet the processing of complex, high-precision parts. It can be equipped with a fourth rotating shaft to meet the processing requirements of special parts. Second, the main structural characteristics