五轴数控机床旋转轴综合误差测量与辨识  

Measurement and Identification of Comprehensive Error of Rotating Shaft of Five-Axis CNC Machine Tool

作　　者：杨桂娟[1] 张岩 赵红美[1] YANG Gui-juan;ZHANG Yan;ZHAO Hong-mei(Department of Mechanical Engineering,Tangshan Polytechnic College,Hebei Tangshan 063299,China;School of Mechanical Engineering,Hebei University of Science and Technology,Hebei Shijiazhuang 050018,China)

机构地区：[1]唐山工业职业技术学院机械工程系,河北唐山063299 [2]河北科技大学机械工程学院,河北石家庄050018

出　　处：《机械设计与制造》2024年第2期193-197,共5页Machinery Design & Manufacture

基　　金：河北省高等学校科学研究计划项目(QN2019342)。

摘　　要：针对五轴数控机床旋转轴的运动误差和几何误差的综合评估问题,在不考虑直线轴运动误差影响的情况下,提出了一种采用R-test测量仪的测量及其辨识方法。首先,测量过程按照参考球的两种不同高度设置进行,仅移动旋转轴,而不移动直线轴。其次,利用R-test测量仪对旋转轴的运动精度进行了测量。此外,假设旋转轴位置几何误差和工作台上参考球的设置误差是影响测量结果的因素,并通过最小二乘法对这些因素进行分离。采用IBS公司的R-test测量仪,对米克朗公司UCP800Duro立式五轴加工中心C轴的运动误差和几何误差进行了测量实验。研究结果表明,该方法能够正确识别旋转轴的运动误差和几何误差,可以有效地综合评估旋转轴的运动精度,并有助于进一步提高旋转工作台的精度。Aiming at the comprehensive evaluation of the motion error and geometric error of the rotating shaft of five-axisNC machine tools,a measurement and identification method using R-test measuring instrument is proposed without considering the influence of the motion error of linear axis.Firstly,the measurement process is carried out according to two different height settings of the reference sphere,and only the rotating axis is moved,but not the straight axis.Secondly,the motion accuracy of the rotating shaft is measured by using the R-test measuring instrument.In addition,it is assumed that the geometric error of the rotating shaft position and the setting error of the reference ball on the worktable are the factors that affect the measurement results,and these factors are separated by the least square method.The motion error and geometric error of C axis of UCP800Duro vertical fiveaxis machining center of Miquelao company were measured by using the R-test measuring instrument of IBS company.The research results show that this method can correctly identify the motion error and geometric error of the rotating shaft,effectively evaluate the motion accuracy of the rotating shaft,and help to further improve the accuracy of the rotating table.

关 键 词：五轴数控机床 旋转轴 运动误差 几何误差 R-test测量仪 

分 类 号：TH16[机械工程—机械制造及自动化] TH744.3[金属学及工艺—金属切削加工及机床] TG659