研究了用切削温度为控制信号来检测刀具破损.用热电偶作为温度传感器,采用8098单片机为微处理器进行切削温度信号实时分析处理,编制出一系列控制软件和实时工作软件来实现监控.当刀具破损或严重磨损时,监控仪可发出声光报警信号,并操纵车床横向退刀,其报警成功率在90%以上. The cutting temperature was used as the control signal to detect the tool breakage.The thermocouple was used as the temperature sensor and the 8098 single chip was used as the microprocessor to process the cutting temperature signal in real time and to compile a series of control software and real time working software to realize the monitoring. When the tool is damaged or severely worn, the monitor can send audible and visual alarm signals and manipulate lathe horizontal retraction, the alarm success rate is over 90%.