* T-shaped casting of cylinder and bed structure and improving the competence, even in the long run, to maintain a stable precision. Spindle head on the inside of the *Y axis, cylinder 8 sides can make a difference, so cutting is maintained with high precision. * In order to reduce the friction of z-Rails, a "half-float like sliding way", during a long position, and can be a long time maintain repeated level. * Be transferred around the medial separation of lubricating oil recovery and recycling. *X/Y/Z shaft of ball screw lubricated, adopt the cooling effect of the Oil-Air method to suppress thermal displacement, thereby increasing precision.