我厂有很多产品及自用的輔助工具,都須要用細長的鏜孔車刀来加工。原来的鏜孔车刀,是用硬質合金刀片焊成,或用高速鋼对焊成(如图1)。由于这种車刀的刀头尺寸很小,容易磨損,所以刀具材料的消耗量很大。并且这种車刀制造相当困难。因此我們改进了一种机械裝卡式的镗孔車刀,如图2所示。刀条是直徑8公厘、長140公厘的高速钢圆条,头部磨出刃口,尾部加工成平面, I plant a lot of products and their own aids, all need to use slender boring tool to process. The original boring tool, is a carbide blade welded into, or welded with high-speed steel (Figure 1). Due to the small tool head size, easy to wear, so the tool material consumption is large. And this turning tool is quite difficult to make. Therefore, we have improved a mechanical chuck type boring tool, as shown in Figure 2. Blade is 8 mm in diameter and 140 mm in length of high-speed steel bar, head grinding out of the blade, tail processed into a flat,