风动凿岩机是一种自由活塞式冲击机器。配气阀与活塞以气力联系,阀的结构、型式以及阀与活塞匹配所实现的压气工作循环的方式,对凿岩机的性能有很大的影响。因此,研究凿岩机配气阀和气缸结合部主要参数与性能的关系,探讨凿岩机内部工作过程的规律,对于进一步提高现有生产机器的性能,建立凿岩机内部工作循环的理论,是 Pneumatic rock drill is a free-piston impact machine. The manner in which the gas distribution valve and the piston are in pneumatic contact with each other, the structure and type of the valve, and the pressure working cycle achieved by matching the valve with the piston have a significant impact on the performance of the rock drill. Therefore, the relationship between the main parameters and performance of the valve and the cylinder joint of rock driller is studied, and the law of the working process inside the rock drill is discussed. The theory of further improving the performance of the existing production machine and establishing the working circulation inside the rock drill is