基于突变论的刀具寿命建模与预报的研究

STUDY ON CATASTROPHE THEORY-BASED MODELING AND PREDICTION OF TOOL LIFE

介绍了基于突变论的方法建立刀具磨损与破损失效寿命模型的可行性的研究结果。借助于最小二乘回归，建立了变参数三次多项式车／立铣刀具磨／破损融合模型。利用这一模型完成了一种车／立铣监视系统。实验结果表明，监视刀具磨损和破损的成功率≥９５％，刀具磨损值的预报误差≤１０％。

The Paper Presents a feasible study of modeling on tool life for the failure modes of tool wear and fracture based on methods of catastrophe theory. By means of least square regression, the fusion model of tool wear/fracture in turning/endmilling using 3-degree Polynome with veriable coefficients has been established. Using the model,a monitoring system of the turning and end-milling Processes is completed.The results of experiment have shown that the rate of success of monitoring tool wear and fracture is more than 95%, and the predicting error value of tool wear is less than 100%.