Using on-line monitoring during the CNC grinding process,the hazard case such as the crushing of grinding wheel and various safety accidents could be avoided,and the optimum time for dressing and replacing grinding wh...Using on-line monitoring during the CNC grinding process,the hazard case such as the crushing of grinding wheel and various safety accidents could be avoided,and the optimum time for dressing and replacing grinding wheel could also be determined,and hence,the service life of the grinding wheel could be prolonged and grinding quality could be improved. To overcome the limitation of some traditional techniques in which some parameters including the grinding power and force,torque and so on were monitored,the acoustic emission (AE) technique,which provides high sensitivity and responding speed,were developed in the present paper. The mechanism of AE during grinding was reviewed. Moreover,a virtual AE monitoring system,which could monitor the grinding state under different working conditions during the grinding,has been developed based on the Virtual Instruments technique. Some experiments were also performed on the internal grinder. The results showed that the AE signals became stronger with increasing the main shaft speed and grinding depth or decreasing the distance between the AE sensor and grinding area.展开更多
研究通过网络实现计算机远程控制和远程在线监测的方法 .利用虚拟仪器技术和网络通讯技术 ,使用TCP/IP通讯协议组和 L ab VIEW中通讯功能模块 ,在 L ab VIEW工具平台上用 G编程语言搭建计算机远程监控系统 .结合实例阐明了这种方法的可...研究通过网络实现计算机远程控制和远程在线监测的方法 .利用虚拟仪器技术和网络通讯技术 ,使用TCP/IP通讯协议组和 L ab VIEW中通讯功能模块 ,在 L ab VIEW工具平台上用 G编程语言搭建计算机远程监控系统 .结合实例阐明了这种方法的可行性及实用性强的特点 .应用该方法可方便地建立计算机远程在线监控系统 ,可充分利用已有的网络资源 ,虚拟仪器技术和 G语言编程使得系统变得灵活 。展开更多
基金Supported by fund of National Key Laboratory for Remanufacturing(9140C85030106JS9102)
文摘Using on-line monitoring during the CNC grinding process,the hazard case such as the crushing of grinding wheel and various safety accidents could be avoided,and the optimum time for dressing and replacing grinding wheel could also be determined,and hence,the service life of the grinding wheel could be prolonged and grinding quality could be improved. To overcome the limitation of some traditional techniques in which some parameters including the grinding power and force,torque and so on were monitored,the acoustic emission (AE) technique,which provides high sensitivity and responding speed,were developed in the present paper. The mechanism of AE during grinding was reviewed. Moreover,a virtual AE monitoring system,which could monitor the grinding state under different working conditions during the grinding,has been developed based on the Virtual Instruments technique. Some experiments were also performed on the internal grinder. The results showed that the AE signals became stronger with increasing the main shaft speed and grinding depth or decreasing the distance between the AE sensor and grinding area.
文摘研究通过网络实现计算机远程控制和远程在线监测的方法 .利用虚拟仪器技术和网络通讯技术 ,使用TCP/IP通讯协议组和 L ab VIEW中通讯功能模块 ,在 L ab VIEW工具平台上用 G编程语言搭建计算机远程监控系统 .结合实例阐明了这种方法的可行性及实用性强的特点 .应用该方法可方便地建立计算机远程在线监控系统 ,可充分利用已有的网络资源 ,虚拟仪器技术和 G语言编程使得系统变得灵活 。
