钻进过程中，硬合金掉入孔内，或在钻粒钻进换用合金钻进（孔内钻粒较多）时，都必须进行捞取（或采用完全消灭的办法），以免继续发生合金崩双或夹钻事故。最近我们根据螺旋肋骨钻头的原理设计了一种构造简单、操作方便的硬合金碎块捞取器。经实验效果良好，可以在短时间内全部捞出孔内的合金碎块（或钻粒）。现将其构造及操作方法介绍如下。 During the drilling process, the hard alloy should fall into the hole or must be harvested (or completely eliminated) when drilling the drilling alloy for drilling (more holes are drilled in the hole) to prevent the alloy from continuing Collapsing double or folder accident. Recently, we designed a simple and easy-to-use hard alloy chipper based on the principle of helical rib drill. The experimental results are good, you can get out of the hole in a short time the alloy fragments (or drill). Now the structure and operation method is as follows.