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二十三、液动冲击回转钴进是怎样破碎岩石的？答：冲击回转钻进时，钻头上的硬质合金切削具同时作用着两个力：一个是回转方向的回转力；另一个是轴向的冲击力。因此，它具有回转钻进破碎岩石和冲击钻进破碎岩石的两种特性。目前在分析冲击回转钻进岩石破碎机理问题上，存在着两种不同的观点：一种观点认为，岩石的破碎主要是由冲击载荷引起的，钻具的回转只是移动切削具的位置，以便将破碎了的岩石切剪掉；另一种观点则认为，岩石的破碎仍然是以回转作用为主的，冲击
Twenty-three, hydraulic impact swing cobalt into the rock is broken? A: Impact rotary drilling, the bit carbide cutting tool at the same time the role of two forces: one is the turning direction of the rotary force; the other is the axial impact. Therefore, it has two characteristics of rotary drilling crushed rock and impact drilling broken rock. At present, there are two different viewpoints on the analysis of rock crushing mechanism of impact rotary drilling: one view is that the rock crushing is mainly caused by impact load, and the rotation of the drilling tool only moves the position of the cutting tool, so that Broken rock cut off; the other view is that the rock is still broken mainly by the role of rotation, the impact