In grinding process,it is important to monitor the dressing and grinding conditions.The grinding process is affected by many factors,such as the selection of the grinding wheel,the dressing condition and the grinding ...In grinding process,it is important to monitor the dressing and grinding conditions.The grinding process is affected by many factors,such as the selection of the grinding wheel,the dressing condition and the grinding condition.In order to achieve the required result,the acoustic emission(AE)signal is applied to the monitoring of the above processes.The dressing process is monitored to produce a grinding wheel surface of constant quality.The tool life of the grinding wheel can be determined by monitoring the change of the amplitude of the AE signal.The contact between the grinding wheel and the workpiece can also be detected with the AE signal.展开更多
The risk of fracture is higher in the case of small diameter drills than that with any other cutting tools Analysis of cutting forces or motor current is fundamentally unsuitable for practical applications to the dete...The risk of fracture is higher in the case of small diameter drills than that with any other cutting tools Analysis of cutting forces or motor current is fundamentally unsuitable for practical applications to the detection of small drlls, owing to the low sensitivity and less parameter variation involved[1] Suitably located AE (Acoustic Emission )sensor can, however, be used to obtain signals which allow tool fracture to be monitored. The monitoring system developed in this study employs a new conducting medium and a signal processing method in a suitable frequence band,which not only solves the installation problem of AE sensor, but also largely improves the reliability of the tool fracture monitoring system.展开更多
文摘In grinding process,it is important to monitor the dressing and grinding conditions.The grinding process is affected by many factors,such as the selection of the grinding wheel,the dressing condition and the grinding condition.In order to achieve the required result,the acoustic emission(AE)signal is applied to the monitoring of the above processes.The dressing process is monitored to produce a grinding wheel surface of constant quality.The tool life of the grinding wheel can be determined by monitoring the change of the amplitude of the AE signal.The contact between the grinding wheel and the workpiece can also be detected with the AE signal.
文摘The risk of fracture is higher in the case of small diameter drills than that with any other cutting tools Analysis of cutting forces or motor current is fundamentally unsuitable for practical applications to the detection of small drlls, owing to the low sensitivity and less parameter variation involved[1] Suitably located AE (Acoustic Emission )sensor can, however, be used to obtain signals which allow tool fracture to be monitored. The monitoring system developed in this study employs a new conducting medium and a signal processing method in a suitable frequence band,which not only solves the installation problem of AE sensor, but also largely improves the reliability of the tool fracture monitoring system.