CNC machine for H beam has following specification: 1) H-beam size (web height × flange width): Max. 1000 × 500mm Min. 150 × 75mm 2) Workpiece length (m):Automatic feed ≥3000mm Manual feed≥690mm 3) Max. workpiece weight (Kg): 5000kg 4) Max. drilling dia. (mm): Vertical drilling: Φ12 Φ33.5 Left and right drilling: Φ12 Φ26.5 5) Spindles number: one spindle on three sides (top, left and right) Total: 3 spindles Rotation spindle speed: 180650r/min (stepless speed adjustment) Morse taper: 2#, 3#, 4# Max. Feeding stroke (mm): Left and right spindle 140mm; Vertical spindle: 325mm Feeding speed: 20 300mm/min 6) Moving distance of spindle: All spindles along the length of the workpiece: 520mm; Left and right spindle along the up an down direction, from the under side of the workpiece30 470mm; Up spindle on the width of the workpiece, from the benchmark side: 45 910mm 7) Drilling head cooling way: compressed air + atomized drilling fluid Air Pressure: 0.6Mpa 8) Processing precision: allowance of neighbor holes distance <±0.5mm In length of 10m, allowance of any holes distance <±1mm 9) Total power (kW):27