BV series adopt CNC system from specialized company, all theaxes and spindle are driven by  servo motor ,3 axes or 4 axescoordinated , capable of drilling ,boring ,milling ,rigid threadingetc, realizing digital positioning ,suitable for large whorl andmulti curve manufacture ,and several steps process can be done byone clip , at the same time ,several cycling manufacture programwas equipped in CNC system . Such as drilling, cooling liquidsupply, tool changing can be done by preprogramming, spindle centerblowing during tool change to keep spindle tape clean .Chips frommanufacture process can be rushed, then conveyed to chipscollector, or by hand.