带螺纹的盲孔需将底部不完整牙扣的倾斜薄边除去或倒钝,而实际上刀具难以接近该部位。我们用图示专用刀具能很好地解决此问题,与使用过的其它方法比较,此法相当容易。而且既适合于梯形螺纹又适合三角形螺纹。图示刀具用于直径φ63.5mm。深127mm的肓孔,刀具尺寸可 Threaded blind holes need to be the bottom incomplete buckle oblique thin edge removed or dull, and in fact the tool is difficult to access the site. We use a dedicated tool illustrated can be a good solution to this problem, compared with other methods used, this method is quite easy. And it is suitable for both trapezoidal thread and triangular thread. The illustrated tool is used for diameter φ63.5mm. 127mm deep hole, tool size can be