Research on Tool Wear Modeling of Special Spiral Rod Milling

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.