Simulation Studies On System And On-line Monitoring Of Cutting Chatter Of Machine Tool

This paper analysed the mechanism model of machine tool's cutting chatter, by using numeric simulation technology the stochastic process and its parameter characteristic of machine tool's cutting chatter was studied. Then through two three-direction acceleration instrument and the INV306DM intelligence signal automatic gathering processing analysis system composition a chatter on-line monitoring system, which was applied on a CAK6150 numerical control lathe to monitor the vibration of machine tool's cutting process and gathered three kinds' data of the lathe cutting process , idling,steadily and occurs chatter , research the three signals' characteristic by using signal processing in time domain and frequency domain. Based on the characteristic of the signals in time domain and frequency domain, this article proposed a judging function of machine tool's cutting chatter by the variance and the mutual correlation coefficient synthetically judging, it was discovered that the judge functiong has a good distinction ability by simulation using the chatter signals that gatherd from the experiment.