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    • 42. 发明公开
    • WORKING SYSTEM, CONTACT DETECTING METHOD, AND AE CONTACT DETECTING DEVICE
    • ARBEITSSYSTEM,KONTAKTERFASSUNGSVERFAHREN UND AE-KONTAKTERFASSUNGSVORRICHTUNG
    • EP1977857A1
    • 2008-10-08
    • EP06823214.9
    • 2006-11-01
    • TOKYO SEIMITSU CO., LTD.
    • MEKI, Kazuo
    • B24B49/10B23Q17/22B24B47/22
    • B23Q17/22B24B47/22B24B49/003B24B49/10
    • The object is to aim at the reduction in the influence of noises in an output of an AE sensor in a working machine. In a working system comprising a working device for working a work W by causing a tool 14 to come into contact work W, an AE sensor 21, and an AE signal processing section 22 for processing an AE signal output from the AE sensor, AE signal processing section 22 comprises an A/D converter 33 for converting an AE signal into a digital signal, a frequency analysis section 34 for calculating the frequency characteristics of a digital AE signal, storage sections 35, 37 for storing the frequency characteristics when the tool is not in contact with the work or tool dresser as non-contact frequency characteristics, and a difference calculation section 35 for calculating a difference between the frequency characteristics of the detected digital AE signal and the non-contact frequency characteristics.
    • 目的在于减少工作机中AE传感器的输出中的噪声的影响。 在包括用于通过使工具14接触工件W来工作工作W的工作装置,AE传感器21和用于处理从AE传感器输出的AE信号的AE信号处理部分22的AE信号 处理部分22包括用于将AE信号转换成数字信号的A / D转换器33,用于计算数字AE信号的频率特性的频率分析部分34,用于存储当工具是频率特性时存储频率特性的存储部分35,37 不与作业或工具修整器接触作为非接触频率特性;以及差分计算部35,用于计算检测到的数字AE信号的频率特性与非接触频率特性之间的差异。