垂直度误差对五轴数控机床误差建模精度和复杂度的影响  

Influence of Perpendicularity Error of Five Axis NC Machine Tool on Error Modeling Accuracy and Complexity

作　　者：王秀山[1] 李智广[1] 王永田[1] 杨建国[2] 

机构地区：[1]河南农业大学机电工程学院,河南郑州450002 [2]上海交通大学机械与动力工程学院,上海200240

出　　处：《机械设计与制造》2015年第11期171-173,177,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金(U1204524);河南省基础与前沿技术研究计划(132300410356);2014年国家级大学生创新创业训练计划(201410466040);郑州市普通科技攻关(131PPTGG413-1)

摘　　要：通过理论推导,证明了垂直度误差在作为平移误差元素建模和作为转角误差元素建模时对误差模型的精度和建模复杂度的不同影响。研究结果表明,对于误差建模过程的复杂度,作为平动误差的建模复杂度小于作为转角误差建模,垂直度误差增多时,复杂度的区分更加明显,主要表现在建模矩阵中附加了转角误差矩阵;对于补偿精度,只需要位移补偿的机床,两种建模结果的补偿效果相同,但对于需要角度补偿的多轴机床,作为转角误差建模获得的补偿矩阵的精度要高于作为平动位移。因此,提出在进行五轴机床误差综合建模时把垂直度误差作为平移误差建模的理论。It proved on the relationships between the error precision of the model and the modeling complexity, the perpendicularity error as the translation error element modeling and as the angle error element modeling. From the complexity of angle error modeling pracess for multi axis machine tools, the modeling complexity is less than the translational error as the angle error modeling. Complexity of perpendicularity error is more obvious far the additional angle error matrix in modeling the matrix. Compensation from the point of view, it showed that, for only needing displacement compensation of the machine tool, the compensation effect of two kinds of modeling results are the same, but for multi axis machine tool needing angle compensation, compensation matrix as the angle error modeling accuracy obtained is higher than that of as translational displacement. So comprehensive analysis, it puts forward in multi axis machine tool error synthesis modeling priority when the verticality error as a translation error modeling.

关 键 词：垂直度误差 多轴机床 建模 补偿 实时性 热变形 

分 类 号：TH16[机械工程—机械制造及自动化] TH161