Monitoring of Grinding Process with Acoustic Emission Signals

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.

声发射监测技术在磨削加工中的应用

在磨削加工中,砂轮的工作状况是不断变化的,因此,对砂轮的修整及磨削过程进行监测是非常必要的。本文将声发射(AE)信号应用到对磨削过程的监测上,通过监测砂轮修整过程可以得到一致的砂轮表面质量。通过监测AE信号的幅值和频谱特征即可确定砂轮的寿命。用AE信号可以成功地检测出砂轮和工件的初始接触时间,为砂轮向工件进给时的准确对刀及高精度表面质量的获得提供了有效的方法。

砂轮磨钝监测及修整

利用声发射(AE)信号归原处理法对砂轮磨钝程度进行监测,在此基础上开发了砂轮磨钝监测及自动修整系统。该系统可以对小批量、多品种工件磨削过程中砂轮钝化进行有效的监测,采用的CNC砂轮自动修整器能够解决多种类型成型砂轮的修整,具有一定的通用性和实用性,能实现磨削砂轮监测、修整过程的自动化和智能化。