一般镗杆的刀头孔是制成方形或扁方形的,用螺钉直接距紧刀头而进行镗削。方孔和扁方孔及刀头在制造时都不够方便,而且在使用时对刀也比较困难。我们针对上述情况设计成圆柱式可调镗杆(见图1),经使用证明,效果良好。刀头的调整靠转动螺钉6来实现。通过螺钉5传动滑块2、3,夹紧或松开刀头。为调整操作方便设计了专用的扳手工具(见图2)。 General boring bar head hole is made of square or flat square, with a screw directly from the tight head and boring. Square hole and flat square hole and the head are not easy to manufacture, and the use of the knife is also more difficult. We designed for the above-mentioned cylindrical adjustable boring bar (see Figure 1), the use of proven good results. Adjust the cutter head by turning the screw 6 to achieve. Drive the slider 2, 3 with the screw 5 and clamp or release the tip. Designed to facilitate the operation of a special wrench tool (see Figure 2).