直径43毫米一字形钎头,是7655型、YT—30型、01—30型凿岩机必用的工具。如何多快好省,低成本,高质量造出来,是矿山机械工人的一项重要任务。一九七○年以来,我们结合本工段设备少,钎头需用量大的特点,进行了以下三部分工艺的改进:钎头内圆锥孔的切削;钎头的模锻成型;硬质合金片的焊接。以下仅介绍钎头内圆锥孔的切削。 直径43毫米一字形钎头形状如图1,当钎头模锻成型后,就要切削出直径20.4毫 Drum diameter of 43 mm bit, is 7655, YT-30, 01-30 type rock drill necessary tools. How to be quicker and cheaper, cheaper and of a higher quality is an important task for mine mechanics. Since 1970, combining with the characteristics of less equipment and large amount of drill bits required for this section, we have made improvements in the following three parts: cutting the taper hole in the drill bit, swaging the drill bit, forming the hard alloy plate Welding. The following describes only the cutting taper hole inside the drill head. Diameter 43 mm A-shaped drill bit shape shown in Figure 1, when the drill bit forging, it is necessary to cut a diameter of 20.4 milliliters