我们把在圆弧面上直接钻孔改为在平面上钻孔。首先找一块方铁,如图中所示,在横向钻一个稍大于工件的孔,工件能转动为宜然后,在上面划线钻孔。若数量多,在方铁的底面沿工件中心线锯开一道口,夹在机用虎钳上钻孔,可在工作中经常要在圆柱体的圆弧面上钻孔,很容易钻溜了而偏离轴心线。为了避免这种现象,提高合格率, Instead of drilling directly on the arc surface, we drill holes in the plane. First find a square iron, as shown in the figure, drill a hole slightly larger than the workpiece, the workpiece can rotate appropriate then, under the crossed drilling. If the number of more, in the bottom of the iron along the workpiece centerline sawing a hole in the machine vise drilling, you can often work in the cylinder arc surface drilling, it is easy to drill slipped Deviation from the axis. In order to avoid this phenomenon, improve the pass rate,