基于Matlab的减振镗杆动态特性分析

机床切削过程中产生的颤振会降低机械加工质量和切削效率，严重影响车床和刀具的使用寿命，产生的环境噪声同时影响工人的身体健康。在影响刀具颤振产生的众多因素中，切削参数（包括切削速度、进给量、背吃刀量）起着不可或缺的作用。为了抑制振动，建立减振镗杆非线性系统的动力学数学模型，加载正弦切削力；采用单因素影响分析方法，研究3种切削参数分别对减振镗杆及减振块最大幅值的影响，绘制不同切削参数下的减振镗杆幅频特性曲线；综合所得仿真结果，分析切削参数对减振镗杆振动影响的规律。所得规律为振动控制策略提供理论依据。

Research on Dynamic Characteristics of Damping Boring Bar Based on Matlab

The flutter in the cutting process lowers quality of machining and cutting efficiency and highly influences the service life of the lathe and turning tool, and affects the health of workers at the same time. Among the factors producing flutter, cutting coefficients including speed of cutting, amount of feed and cutting depth have important effects. To curb vibration, a dynamic math model of nonlinear damping boring bar system and load sine cutting force is establish. With the method of analysis of single factor, it begins with researching the influence of each of the three coefficients on flutter amplitude of damping boring bar and block, and Amplitude Frequency curve of damping boring bar in different cutting coefficients are plotted. The rule of flutter of damping boring bar with different cutting coefficient is summarized from analysis, which provides theoretical basis for vibration control strategy.