声发射刀具失效监控系统研究

通过对钻、车、镗削刀具失效过程中产生的声发射信号的分析,获得了信号的频谱特性,建立了描述刀具破损、磨损状态的数学模型。依据分析及实验结果,设计了一个智能化的刀具状态监控系统。刀具破损面积的分辨率为0.01mm~2,刀具破损的响应时间小于0.1ms,漏报率及误报率小于5％。

INVESTIGATION OF MONITORING AND CONTROL SYSTEM FOR ACOUSTIC EMISSION TOOL FAILURE

Following ihe securing of spectrum characteristics of signals by analyzing the signals of acoustic emissions produced during the process of tool failure in drilling, turning, and boring operations. this paper establishes the mathematical model describing the form of tool breakage and wear. Based on analysis and experimental results, an intelligent monitor system has been designed for the tool conditions. The resolution of area of tool breakage is 0.01mm2. The response time of tool breakage is less than 0.1ms. Percentage of escapes and mistakes on report is less than 5%. After tests in experimental and production environments this system is proved practical and advanced.