关键词: 开放式数控系统, 动态辨识, 刀具磨损, 偏最小二乘回归

Abstract: The structure and functions of open NC system are investigated based on the industrial PC with the motor control card and the data acquisition card. In the machining process, the vibration signals of the tools can be gathered by the data acquisition card, and then the turning tools wear monitoring model is built after the signals are filtered through the method of multivariate statistical analysis. The monitoring modules for different objectives in the machining processes can be configured conveniently. The technology of monitoring turning tools wear based on open NC system is realized, so that guarantees the stability and reliability of the machining process.

Key words: open NC system, dynamical identification, tool wear, partial least-squares regression