基于机床稳定性的铣削力系数的研究

Research on the milling force coefficient based on the stability of machine tool

在高速高精度切削加工过程中,机床颤振问题严重影响加工质量,并制约着生产效率的提高.为提高机床加工性能、保证切削过程的稳定需要对切削颤振进行预测分析,最常用的方法是通过绘制稳定性叶瓣图对机床不同加工条件下的稳定性进行预测分析.本文以解析法确定叶瓣图为基础,通过试验与数值分析确定数控加工中心径向力系数与切向力系数两个重要参数,并通过仿真模型验证其准确性,为绘制机床稳定性叶瓣图提供重要依据.

During the high speed and high precision machining,the machine tool chatter has a serious impact on the machining quality and the improvement of production efficiency. In order to improve the machining performance of machine tools and ensure the stability of cutting process,the most common method is to predict the stability lobe diagram of the machine tool with different working conditions. In this paper,based on the analysis method,the two important parameters of radial force coefficient and tangential force coefficient are determined by experiment and numerical analysis,and the accuracy of the model is verified by simulation model.To use for drawing the machining tool stability lobe diagram.