US Patent 7398717 CNC central cutting and turning machine

The present invention provides a CNC central cutting and turning machine includes a holding head, wherein the rear end of the holding head has a holder, which can turn, mounted thereon, and the holder has at least three claws mounted thereon for jointly holding an object to turn; and a cutter holder for cutting the object, wherein the cutter holder has circular shape and is pivoted on a rear seat for turning, a central hole of the cutter holder is capable of accommodating the object therein, and the front side of the cutter holder has a lathe tool installed thereon. Through turning the object and also the lathe tool circling around the object, the speed for cutting the object can be significantly increased and also the cutting efficiency.