本文利用工程故障诊断理论的故障树分析法,首先建立合理的系统故障树,然后根据由故障树得到的结构函数进行定性和定量分析,从而获得最佳诊断决策,对一计算机控制的锻压机床进行了有效的故障诊断. In this paper, the fault tree analysis method of engineering fault diagnosis theory is used to establish a reasonable system fault tree and then make qualitative and quantitative analysis based on the structure function obtained from the fault tree to get the best diagnosis decision. For a computer-controlled forging machine tool Effective troubleshooting.