BV series adopt CNC system from specialized company, all the axes and spindle are driven by servo motor, three axes or four axes coordinated, capable of drilling, boring, milling, rigid threading etc, realizing digital position, suitable for large whorl and multi curve manufacture, and several steps process can be done by one clip, at the same time, several cycling manufacture program was equipped in CNC system. Such as drilling, cooling liquid supply, tool changing can be done by preprogramming, spindle center blowing during tool change to keep spindle tape clean. Chips from manufacture process can be ruched, then conveyed to clips collector, or by hand.