盲孔攻丝安全丝锥夹头吴建龙 昆山专用汽车制造厂 盲孔攻丝中,由于丝锥扭矩异常增大(如丝锥碰到孔底或其它异物卡住)导致丝锥扭断,又难于取出。为此笔者设计了附图所示的安全丝锥夹头,其结构原理及使用方法如下: 钻床主轴带动顶针1,经螺钉3再带动传动套2旋转。在传动套2的一端, Blind hole tapping safety tap chuck Wu Jianlong Kunshan Special Purpose Vehicle Manufacturing Blind hole tapping, due to an abnormal increase in torque tap (such as the tap hit the bottom of the hole or other foreign objects stuck) lead to the tap twist, but also difficult to remove. For this reason, the author designed the safety tap chuck as shown in the accompanying drawings. The principle and usage of the tap chuck are as follows: The drill spindle drives the thimble 1, and the screw 3 drives the transmission sleeve 2 to rotate. At one end of the drive sleeve 2,