为了以金刚石出刃高度不同的观点来定性的确定金剐石和岩石相互作用的过程,以及为了明确证实载荷增加时接触点数增加的假说,进行了下列工作。摩擦技术中使用的压痕法是试验的基础。把钻头轮廓画在有机玻璃板上。对置于此玻璃板上的钻头施加5—20kgf,此后使有机玻璃板在回转方向上移动0.5—1.0mm。然后, In order to qualitatively determine the interaction between gneiss and rock from the point of view of the height of the diamond exit edge and the hypothesis of a clear increase in the number of contacts when loading is increased, the following work was done. The indentation method used in the friction technique is the basis of the experiment. Draw the outline of the drill on the plexiglass plate. 5-20 kgf was applied to the drill bit placed on the glass plate, after which the plexiglass plate was moved 0.5-1.0 mm in the rotation direction. then,