基于可补偿误差项的机床几何误差建模与补偿技术

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英文篇名：Modeling and Compensation Technology Based on Compensable Geometrical Errors of Machine Tool 作者：何春燕 ; 李为民 英文作者：HE Chunyan;LI Weimin;College of Mechanical and Equipment Engineering,Hebei University of Engineering;School of Mechanical Engineering,Hebei University of Technology; 关键词：机床技术 ; 误差补偿 ; 几何误差 ; 数控系统 英文关键词：Machine tool;;Error compensation;;Geometric error;;CNC system 中文刊名：JCYY 英文刊名：Machine Tool & Hydraulics 机构：河北工程大学机械与装备工程学院;河北工业大学机械工程学院; 出版日期：2019-06-15 出版单位：机床与液压 年：2019 期：v.47;No.485 基金：“高档数控机床与基础制造装备”重大专项(2009ZX04014-021) 语种：中文; 页：JCYY201911039 页数：5 CN：11 ISSN：44-1259/TH 分类号：168-171+176

摘要

提出一种可分离数控机床刀具与工件之间可补偿与不可补偿几何误差源的方法;依据可补偿误差项建立误差补偿模型;采用激光干涉仪+直角镜的垂直度直接辨识方法检测出几何误差,导出补偿量计算式,选用西门子840DNC的几何误差补偿模块进行补偿实验,其中8项指标补偿后的几何误差减小比例在16.5%～92%,补偿效果显著。实践证明本文作者所提出的机床可补偿几何误差的建模与补偿方法是有效和可行的,其补偿方法同样可以用于不同类型的机床。
        A method is presented for separable compensable and un-compensable geometrical error sources between the tool and work-piece of computer numerical control(CNC) machine tool. According to compensable errors, the compensation model was built. The compensable geometrical errors was measured by squareness errors direct identification using laser interferometer and prism square. The calculation formula for compensation quantity was derived. The compensation experiment was carried out on geometrical errors compensation module of SIEMENS 840 DNC system. The decrease rates of 8 indexes of geometrical errors were 16.5%～92% after compensation. The compensation effect was satisfied. The results show that the technology of modeling and compensation for compensable geometrical errors of machine tools is effective and feasible, which is suitable for different types of machine tools.

引文

[1]李圣怡,戴一帆,尹自强,等.精密和超精密机床精度建模技术[M].长沙:国防科技大学出版社,2007.
    [2]LEETE D L.Automatic Compensation of Alignment Errors in Machine Tools[J].International Journal of Machine Tools Design & Research,1961,1(4):293-324.
    [3]SCHULTSCHIK R.The Components of Volumetric Accuracy[J].CIRP Annals-Manufacturing Technology,1977,25(1):223-228.
    [4]ZHANG G,VEALE R,CHARLTON T,et al.Error Compensation of Coordinate Measuring Machines[J].CIRP Annals-Manufacturing Technology,1995,34(1),445-448.
    [5]凡志磊,杨建国,李中华.一种数控机床几何误差多项式模型的阶数选择方法[J].机床与液压,2009,37(10):49-50.FAN Z L,YANG J G,LI Z H.The Polynomial Order Selection for the Geometric Errors Modeling of NC Machine Tool[J].Machine Tool & Hydraulics,2009,37(10):49-50.
    [6]赵强强,洪军,刘志刚,等.任意拓扑结构机床运动轴误差传递链建模方法[J].机械工程学报,2016,52(21):130-137.ZHAO Q Q,HONG J,LIU Z G,et al.Modeling Method on Motive Axes Error Transfer Chain for Machine Tool of Arbitrary Topological Structure[J].Journal of Mechanical Engineering,2016,52(21):130-137.
    [7]DONMEZ M A,BLOMQUIST D S,HOCKEN R J,et al.A General Methodology for Machine Tool Accuracy Enhancement by Error Compensation[J].Precision Engineering,1986,8(4):187-196.
    [8]刘海涛.少自由度机器人机构一体化建模理论、方法及工程应用[D].天津:天津大学,2010.
    [9]张虎,周云飞,唐小琦,等.基于激光干涉仪的数控机床运动误差识别与补偿[J].中国机械工程,2002,13(21):1838-1841.ZHANG H,ZHOU Y F,TANG X Q,et al.Measurement Using Laser Interferometer and Software Compensation of Volumetric errors of Three-axis CNC Machining Centeres[J].China Mechanical Engineering,2002,13(21):1838-1841.
    [10]钟伟弘,田美丽.双频激光干涉在数控机床定位误差补偿系统中的应用[J].机床与液压,2003(3):103-104.
    [11]SINUMERIK.Extended Functions (Part 2) Sinumerik 840D/840Di/810D (CCU2)[OL].Available at:www.ad.siemens.de.Accessed,2009-11-15.