【摘要】 介绍了一种螺杆铣削过程刀具磨损建模的方法。该方法针对螺杆加工中变切削参数的工况,提取了振动信号和功率信号的刀具磨损特征值,并建立了信号特征值与刀具磨损量之间的映射关系,从而得到刀具磨损模型。实验证明,由此建立的刀具磨损模型,能够排除切削参数变化的干扰,可以较好地反映加工中刀具磨损状态。同时也为具有时变切削参数特性的加工过程刀具磨损状态监控提供更多还原

【Abstract】 Tool wear modeling method for spiral rod milling is presented. Firstly the variable cutting parameters of spiral rod milling are analyzed to extract the eigenvalue of vibration and power signals. Then the mapping between the signal eigenvalue and the tool wear value is established. Thereby the tool wear and breakage model is obtained. Experimental results have proved the effectiveness of the method proposed to reflect the actual tool condition during the milling process in spite of the varying cutting parameters. Moreover, it provides a new approach for tool condition monitoring of other milling processes with time-varying cutting parameters.更多还原