目的论述自动化刀具切削状态监控仪原理及组成结构．方法在流体声发射和电机电流传感方案的基础上，讨论以不同切削负载为条件的监控原理，论述其硬件和软件的组成和结构．结果该监控仪可通过并行接口与机床控制系统通讯，实现刀具切削状态监控的自动化．结论大量实验和应用表明，此监控仪具有很高的监测成功率和可靠性，已进入实用化阶段． Aim To discuss the principle and structure of automatic cutter cutting condition monitor. Methods On the basis of fluid acoustic emission and motor current sensing scheme, the principle of monitoring with different cutting loads is discussed, and the composition and structure of the hardware and software are discussed. Result The monitor can communicate with the machine control system via the parallel interface to automate the cutting status monitoring of the tool. Conclusion A large number of experiments and applications show that this monitor has a high monitoring success rate and reliability, has entered the practical stage.