本文提出了评价气动凿岩机性能优劣的综合评价指标——目标函数。在总结前人的设计经验数据后,确定了设计时应满足的条件——约束条件。从而,建立了气动凿岩机结构参数优化数学模型。采用复合形法对所加工的两个凿岩机模型进行了结构参数的优化计算。结果表明,优化计算的结果是可信的,优化计算的效果是显著的。 This paper presents a comprehensive evaluation index—objective function—for evaluating the performance of pneumatic rock drills. After summarizing the predecessors’ design experience data, the conditions that should be met in the design—constraint conditions—are determined. Thus, a mathematical model for optimizing the structural parameters of a pneumatic rock drill was established. The complex parameters method was used to optimize the structural parameters of the two rock drill models. The results show that the result of the optimization calculation is credible and the effect of the optimization calculation is significant.