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精密镗床旋转轴几何误差完备性测量与辨识

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  • 国家科技期刊平台
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针对四轴卧式镗床旋转轴需测几何误差的数目不统一与完备性缺失的问题,提出了基于形状创成函数的四轴卧式镗床旋转轴PIGEs形成机理分析方法与旋转轴完备几何误差测量辨识方法.基于形状创成机理构建了卧式镗床几何误差创成函数,确定了旋转轴可通过误差补偿进行调整的最少与位置无关的几何误差(Position-independent geometric error,PIGEs)数目.建立了卧式镗床旋转轴4项PIGEs、6项与位置有关的几何误差(Position-dependent geometric error,PDGEs)、6 项安装误差(Setup error,SEs)与球杆仪(Double ball bar,DBB)测量轨迹半径之间的完备性函数模型,设计了基于DBB的四轴联动Viviani曲线测量轨迹,构建了旋转轴6项PDGEs的NURBS表征与PIGEs、SEs辨识方法.开展了误差补偿对比实验验证,结果表明,利用几何误差完备性测量与辨识结果进行误差补偿,较仅单一补偿6项PDGEs可提升圆轨迹测量精度40.69％.
Completeness Measurement and Identification of Geometric Error of Rotary Axis of Boring Machine
To address the problem that the number of geometric errors were inconsistent and incompleteness which needed to be measured for the rotary axis of four axis horizontal boring machine,an analyzing methodology of PIGEs formation mechanism based on the shape generation function and a method of the completeness measuring,identifying geometric errors of the rotary axis were proposed for a four axis horizontal boring machine.Firstly,the generation function of PIGEs of horizontal boring machines was constructed based on the shape generation mechanism,and the minimum number of position-independent geometric error(PIGEs)that the rotary axis can be adjusted through error compensation was determined.Secondly,the completeness function model was established consisted of four terms PIGEs,six terms position-dependent geometric error(PDGEs),six terms setup error(SEs)and DBB measurement track radius length of the rotary axis of horizontal boring machine,the Viviani curve measurement track based on DBB was designed based four-axis synchronized motion,and the NURBS characterization of six item PDGEs,identification methods of PIGEs,and SEs of the rotary axis were constructed.Finally,the comparative experiment by error compensating was carried out.The results showed that the error compensation using the geometric error completeness measurement and identification results included four terms PIGEs,six terms PDGEs,and six terms SEs can improve the measurement accuracy of circular trajectory by 40.69％compared with that of compensate six PDGEs simply.

horizontal boring machinegeometric errorformation mechanismrotary axiscompleteness measurement and identification

郭世杰、丁强强、邹云鹤、萨日娜、唐术锋

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内蒙古工业大学机械工程学院,呼和浩特 010051

内蒙古自治区特殊服役机器人重点实验室,呼和浩特 010051

卧式镗床 几何误差 创成机理 旋转轴 完备性测量与辨识

国家自然科学基金项目国家自然科学基金项目国家自然科学基金项目内蒙古关键技术攻关项目内蒙古自治区高等学校创新团队发展计划支持项目内蒙古自治区直属高校基本科研业务费项目内蒙古自治区直属高校基本科研业务费项目内蒙古自治区高等学校青年科技英才支持计划项目内蒙古自然科学基金项目内蒙古自然科学基金项目

5206505352365058523650642021GG0255NMGIRT2213ZTY2023005JY20230043NJYT230432023LHMS050182023LHMS05017

2024

10.6041/j.issn.1000-1298.2024.01.043

农业机械学报
中国农业机械学会 中国农业机械化科学研究院

农业机械学报

CSTPCD北大核心
影响因子：1.904
ISSN：1000-1298
年,卷(期)：2024.55(1)
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