一、前言由于无阀独立回转凿岩机存在压气膨胀过程,压力变化较复杂,加之其它因素的影响,目前尚无理论公式简单地计算冲击能、频率、耗气量等性能参数。工程上仍然采用一般凿岩机的简化计算法来确定这些参数,这种方法所取的经验常数较多,甚至在无样机的情况下根本无法计算。在设计新凿岩机时,一些主要尺寸还是通过样机实验调试来确定。显然,设计费用较高。目前,由于计算机的推广应用,在国内 I. INTRODUCTION Due to the existence of the pressure expansion process in the valveless independent rotary rock drill, the pressure change is complicated, and in addition to other factors, there is currently no theoretical formula to simply calculate the performance parameters such as impact energy, frequency, and air consumption. In engineering, simplified parameters of general rock drills are still used to determine these parameters. This method takes more empirical constants and cannot even be calculated without a prototype. When designing a new rock drill, some of the major dimensions are still determined by prototype test commissioning. Obviously, the design cost is higher. At present, due to the popularization and application of computers, in the country