车削刀具三向振动多参数回归模型的试验研究  

Experimental Study on Multi-parameters Regression Model of Three Dimensional Vibration of Turning Tool

作　　者：袁志敏 邵明辉[1] 李顺才[1,2] Слатин Вадим Иосифович Yuan Zhimin;Shao Minghui;Li Shuncai;Слатин Вадим Иосифович(School of Mechanical and Electrical Engineering,Jiangsu Normal University,Xuzhou,Jiangsu 221116,China)

机构地区：[1]江苏师范大学机电学院,江苏省徐州市221116 [2]江苏师范大学江苏圣理工学院 [3]圣彼得堡彼得大帝理工大学先进制造技术学院

出　　处：《工具技术》2020年第2期12-16,共5页Tool Engineering

基　　金：国家自然科学基金(51675250);徐州市科技计划项目(KH17002);江苏省大学生实践创新训练计划项目(201810320024Z)

摘　　要：设计了64组车削参数对7075铝合金进行车削试验,利用测振仪、三向加速度传感器采集刀尖处沿工件径向、轴向及切向的三向振动信号,得到了相应的三向振动时域曲线及自功率谱曲线。研究车削振动与车削参数的相关性,基于最小二乘法建立了三向车削振动加速度关于车削参数的多元回归模型。结果表明:随着车削参数的变化,三向振动加速度均方根值a RMS的变化规律基本一致,径向a RMS最大,切向a RMS最小;车削参数与切向振动的相关性最高,与轴向振动的相关性最低,平均相关性系数为0.813。Turning test of 7075 aluminum alloy based on 64 turning parameters.By three-way turning vibration signals collected at the turning tool tip along the radial,axial and tangential directions of work-piece by the vibration measurer and the three-way accelerometer,the time domain curves of three-dimensional turning vibration and the curves of self-power spectrum under the given turning parameters is obtained.In order to study the correlation of the turning vibration with the cutting parameters,the multivariate regression models of three-way turning vibration acceleration with respect to turning parameters are established based on least square method.The research shows:With the change of turning parameters,the change rule of root mean square value a RMS of three-dimensional vibration acceleration is basically the same,and the a RMS of radial direction is the largest while the a RMS of the tangential direction is the smallest.The tangential vibration has a highest correlation with the turning parameters while the axial vibration has a lowest correlation with the turning parameters and the mean correlation coefficient is 0.813.

关 键 词：7075铝合金 三向车削振动 车削参数 回归模型 最小二乘法 

分 类 号：TG712[金属学及工艺—刀具与模具] TH161[机械工程—机械制造及自动化]