基于响应面模型的广义空间切削稳定性研究  

Research on cutting stability of generalized manufacturing space based on response surface mode

作　　者：黄华[1,2] 张树有[1] 刘晓健[1] 何再兴[1] 

机构地区：[1]浙江大学流体传动及控制国家重点实验室,浙江杭州310027 [2]兰州理工大学机电工程学院,甘肃兰州730050

出　　处：《浙江大学学报（工学版）》2015年第7期1215-1223,共9页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金资助项目(51275458);浙江省博士后科研资助项目(BSH1401013);国家科技重大专项课资助项目(2015ZX04014021)

摘　　要：提出以机床立柱和主轴箱不同位置的组合为对象,采用试验设计结合响应面模型的方法研究机床在整个加工空间内的切削稳定性分布规律的方法.选择立柱和主轴箱在移动轨迹上的关键位置的组合作为计算样本点,在ANSYS仿真软件中对样本点的机床动力学特性进行分析.计算每个样本点的最小临界切削深度,建立反映位置特征与最小临界切削深度数值的二次多项式响应面模型,模拟在整个空间内的稳定性切削极限深度近似值,对该响应面模型的质量进行评价.以一台卧式高速加工中心为例,说明了机床立柱位置的变化对切削稳定性有较大影响,为结构和工艺的优化设计提供了理论依据.A method of combining the response surface mode（RSM）and experimental design was presented based on the combination of different positions in the moving trajectory of the machine tool spindle box and the column in order to analyze the cutting stability in the whole processing spatial distribution.A combination at key position was selected as samples,and the dynamics property of the samples was calculated via ANSYS.The limit critical cutting depth of each sample was calculated,and the quadratic polynomial RSM reflecting the relation between position and stability of limit critical cutting depth was established.The limit critical cutting depth in the entire space approximation was calculated,and the quality of RSM was further evaluated.The great influence of position changes of moving parts on the stability of cutting was shown with a high speed horizontal machining center（MC）as an example,providing some theoretical support for optimization of machining process and structure design.

关 键 词：切削稳定性 最小临界切削深度 广义加工空间 响应面模型(RSM) 

分 类 号：TG502[金属学及工艺—金属切削加工及机床] TP391[自动化与计算机技术—计算机应用技术]