一、引言对于如凿岩机和冲击破碎机等一类靠冲击作用工作的机械,其主要工作方式是冲击锤以一定速度打击在工具(如钻杆、镐钎等)上,产生足够高的弹性应力波作用于工作介质(如岩石),以达到如钻孔、破碎等工作目的。关于这些应力波在冲击式钻孔中的发生和传播,以及能量传递等关系,Lundberg已作了详细的研究和讨论。本文是着重讨论当工作介质的阻力 I. INTRODUCTION For machines that work by impact, such as rock drills and impact crushers, the main method of operation is that the impact hammer strikes a tool (such as drill pipe, boring bar, etc.) at a certain speed to produce a sufficiently high elastic stress. The wave acts on the working medium (such as rock) to achieve work purposes such as drilling and crushing. With regard to the occurrence and propagation of these stress waves in impact drilling, as well as energy transfer, Lundberg has conducted detailed studies and discussions. This article focuses on the resistance of working media