在攻丝过程中,往往会产生丝锥折断现象,要取出断在工件内的丝锥是非常困难的。取出断在工件孔内的丝锥,有多种方法,但多数方法都会使工件的螺纹孔受到损坏。下面介绍一种既简单、而又能在工件不受损坏的条件下取出断丝锥的工具。取出断丝锥的方法如图1所示,这是一种反向旋转退出折断丝锥的方法。图2则为取M12断丝锥工具的结构。制作工具时,要以丝锥的内径(图2中为φ10.5毫米)和排屑沟的公切圆(图2中为φ6.7毫米)为基准。应用这种工具取 In the tapping process, tend to produce tap breakage, to remove the tap broken in the workpiece is very difficult. There are several ways to remove a tap tapped in a workpiece hole, but most methods can damage the tapped hole of the workpiece. Here is a simple and easy way to remove the tap while it is not damaged. Remove the broken tap method shown in Figure 1, which is a reverse rotation out of the broken tap method. Figure 2 is taken M12 broken tap tool structure. When making the tool, take the inner diameter of the tap (φ10.5 mm in Figure 2) and the common tangent of the chip evacuation groove (φ6.7 mm in Figure 2) as a reference. Use this tool to take