机电工程技术2025，Vol.54Issue(21)：61-66,82,7.DOI:10.3969/j.issn.1009-9492.2025.21.011
三坐标测量薄壁异形件过程中的误差影响因素
Factors Influencing Errors in the Process of Three Coordinate Measurement of Thin-walled Irregular Parts
摘要
Abstract
Thin-walled irregular parts have high flexibility and complex geometric shapes,so they are affected by probe contact force and surrounding environment during three-dimensional measurement,resulting in low measurement accuracy.Traditional error analysis methods cannot fully identify the source of errors and provide targeted compensation.A multivariate coupled error model combining wall thickness,scanning speed,and temperature is proposed,error model is established and error correction is performed.Hexagon SDL07.1.07 three-coordinate measuring machine is used as the experimental platform,and multiple experimental data are obtained through response surface optimization design,and finite element simulation technology is used to deeply understand the deformation of the measured object in various local areas under the action of the probe.A three-dimensional error distribution prediction model is established based on the relationship between the deformation field and spatial error to accurately compensate for the actual measurement error.The results show that wall thickness,as the core variable,has a significant impact on measurement errors.When the wall thickness is reduced from 2.0 mm to 0.5 mm,the error amplification exceeds 2.5µm.If the speed measurement is increased to 5 mm/s,the error amplification reaches almost 50%,and there is an environmental temperature interaction effect.To address these issues,a method of implementing error compensation based on wall thickness is proposed,improving both speed and temperature parameters,and creating a staged error correction model.After this method of correction,the maximum error decreases from the initial 12.3 µm to 8.1 µm,and the average error is basically maintained at around 3.6 µm.This not only significantly improves the measurement accuracy of thin-walled structures,but also provides valuable engineering application reference for multi-source error modeling under complex working conditions.关键词
薄壁异形件/体积误差/误差建模/误差补偿Key words
thin-walled irregular part/volume error/error modeling/error compensation分类
矿业与冶金引用本文复制引用
余雁波,鲍磊,陈宇..三坐标测量薄壁异形件过程中的误差影响因素[J].机电工程技术,2025,54(21):61-66,82,7.基金项目
云南省教育厅科学研究基金项目(2025J1449) （2025J1449）
