有一批 ( 1 3 0只 )圆柱形工件的加工任务 ,要求在 2 2 mm厚的板材上钻出直径为 1 3 1 mm的孔。因不打算用传统的通过几次钻孔、扩孔的方法加工 ,而制作了一把类似环钻的刀具 ,使切削一次性完成。如图 ,在一块矩形钢坯上开了两条宽为 8mm的槽与标准的平面切槽刀相配 ,槽的间距 A group of (130) cylindrical workpieces were machined to drill holes of 1331 mm in diameter on 2 2 mm thick plates. Because it does not intend to use the traditional method of drilling through a few times, reaming method and the production of a diamond-like tool, so that cutting a one-time finish. As shown in the figure, on a rectangular billet, two grooves with a width of 8 mm are opened to match with a standard plane grooving cutter. The groove pitch