为了提高弧齿锥齿轮加工精度和切齿效率 ,提出弧齿锥齿轮铣齿机切削系统的时序分时建模系统辨识方法。通过对 Y2 2 5 0型铣齿机工件主轴垂直和水平方向的振动测试 ,应用研制开发的时间序列分时建模程序包 ,得出该机床固定安装法的切削系统模型 ,并进行了模态分析及时序谱分析。噪声方差很小 ,辨识结果具有较高的可信度 In order to improve the machining accuracy and cutting efficiency of the spiral bevel gear, a time division modeling method of the spiral bevel gear milling machine cutting system is proposed. Through the vertical and horizontal vibration tests on the workpiece spindle of Y2 250 type gear milling machine, the time-series time-division modeling package developed by the author is used to obtain the cutting system model of the fixed installation method of the machine tool and the modal Analysis and timing analysis. The variance of noise is small, and the identification result has high credibility