如图所示的攻丝倒角复合工具,可在一次安装下同时完成攻丝与倒角两个工步,既提高了工效又保证了产品质量。该工具是由丝锥1、倒角刀2、弹簧3、档圈4和紧固螺钉5组成。工作时是按以下顺序进行的: (1)工具接触工件并开始攻丝工作; (2)丝锥进行攻丝工作,并使弹簧压缩; (3)丝锥反转并逐渐退出工 As shown tapping chamfering composite tools, in one installation at the same time to complete the tapping and chamfering two steps, both to improve work efficiency and ensure product quality. The tool is composed of tap 1, chamfering knife 2, spring 3, retaining ring 4 and fastening screw 5. Work is performed in the following sequence: (1) the tool touches the workpiece and starts tapping work; (2) the tapping takes place and the spring is compressed; (3) the taper is reversed and is gradually withdrawn