Fashioned screw cutter of one -step refining

The utility model discloses a fashioned screw cutter of one -step refining, including sword tail and several pedestal, installation several blade on the pedestal, the several pedestal includes the chamfer seat, the bottom installation chamfering blade of chamfer seat, the below of chamfer seat is the countersunk seat, the bottom installation countersunk head blade of countersunk seat, the below of chamfer seat is the screw seat, the bottom installation screw blade of screw seat. It has the gas thread to open among the sword tail, the gas thread is the internal thread, and this boring cutter passes through gas thread and the spiro union installation of handle of a knife mechanism. The utility model has the advantages of three kinds of blades are installed jointly on the blade holder, when feeding along with the blade holder, can realize three kinds of processing mode one shot forming of screw hole, counter sink and chamfer, can effectively put forward high pressure heater work efficiency rate. 本实用新型公开了种次加工成型的螺