盆形钻模(图27)盆形钻模通常专门用于钻图示的工件,即在圆柱体的凸缘上钻孔。工件放入到“盆”中后,将钻模板放上(用定位销定位),把开口垫圈转入螺栓上,再旋紧夹紧螺母。然后可用普通的方式进行钻削加工。可以看到在“盆”的凸缘上开有缺口,使切屑可以落入空隙中。已考虑切屑可能落入“盆”内,因此在盆内下面钻有四个大孔,允许切屑由孔落下,不 Basin-shaped Drills (Figure 27) Basin-shaped drills are often used exclusively for drilling the illustrated work pieces, ie drilling holes in the flange of the cylinder. After the work piece is placed in the “basin,” place the drill template (with the dowel pin), turn the open washer onto the bolt, and tighten the clamping nut. Then you can drill in the usual way. It can be seen that there is a notch in the flange of the “pot” so that the chips can fall into the void. It has been considered that chips may fall into the “basin,” thus drilling four large holes below the basin to allow chips to fall from the holes, not