螺孔加工采用图 1所示的攻丝倒角复合工具 ,可实现先攻丝 ,后倒角 ,使工序集中 ,效率提高 ,可适用于单件和批量生产中的机动攻丝和倒角 ,且其倒角大小可以调整。图 1　攻丝倒角复合刀具结构图攻丝倒角复合刀具工作时 ,刀具正转并轴向进给 ,进行攻丝 ;当倒角刀碰到工件端面时 ,? Screw hole machining using tapping chamfering composite tools shown in Figure 1, can be achieved after the first tapping, chamfering, so that processes focus on efficiency, applicable to single-piece and mass production of mobile tapping and chamfering, and The chamfer size can be adjusted. Figure 1 tapping chamfer composite tool structure Tapping chamfering composite tool work, the tool is forward and axial feed, tapping; when the chamfering knife hit the workpiece end face,