Single-axis driven measurement method to identify position-dependent geometric errors of a rotary table using double ball bar

Ding, Shuang; Wu, Weiwei; Huang, Xiaodiao; Song, Aiping; Zhang, Yifu

doi:10.1007/s00170-018-3086-3

Cited by 17 publications

(2 citation statements)

References 27 publications

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“…Since PIGEs of a rotation axis account for a large part of its geometric errors [26,27], most of the existing studies have focused on PIGEs of rotation axes [1-4, 11, 24, 25, 28-30]. In addition, some of the studies independently explore PDGEs error sources [9,20,22,31]. However, the unrelated identification of one of these two geometric error sources lacks the discussion of the coupling mechanism between PIGEs and PDGEs.…”

Section: Introductionmentioning

confidence: 99%

Vision-based measurement for decoupling identification of geometric errors of rotating axes for five-axis platform

Yin¹,

Zhou²,

Ju³

et al. 2022

Meas. Sci. Technol.

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In this paper, a method for identifying and decoupling geometric errors of rotation axes using vision measurement is proposed. Based on screw theory and exponential product formula, identification equations of position-dependent geometric errors (PDGEs) and position-independent geometric errors (PIGEs) of the rotation axes are established. The mapping relationships between the error twist and geometric errors are established. The error model provides the coupling mechanism of PDGEs and PIGEs. Furthermore, a progressive decoupling method is proposed to separate PDGEs and PIGEs without additional assumptions. The pose parameters, required for solving the identification equations, are obtained by visual measurement. Then, the error terms of PIGEs and PDGEs are determined. Lastly, the error calibration of the rotation axes is investigated, thus providing an average rotary table orientation error reduction of 28.1% compared to the situation before calibration.

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Section: Introductionmentioning

confidence: 99%

Vision-based measurement for decoupling identification of geometric errors of rotating axes for five-axis platform

Yin¹,

Zhou²,

Ju³

et al. 2022

Meas. Sci. Technol.

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show abstract

“…The linear and angular errors were decoupled by two measuring paths in different horizontal planes [7]. Ding et al used a ball bar to identify the position-dependent geometric errors of a single-axis-driven rotary table, and optimized the installation parameters to ensure the measurement stability [8]. The R-test is another indirect measuring instrument used to identify the geometric errors of the rotary axes of five-axis machine tools.…”

Section: Introductionmentioning

confidence: 99%

Analysis and improvement of the positioning accuracy of rotary axes of compound machine tools based on pitch error compensation

Shen

2020

Meas. Sci. Technol.

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A method for pitch error compensation analysis and parameter identification for a rotary axis with special structures is proposed to improve the positioning accuracy of the rotary axes of compound machine tools. The characteristics of the planar linkage mechanism of a rotary axis are analyzed. Then, the error compensation trend is obtained according to the corresponding relationship between the angle and the displacement. An angular positioning error piecewise function is used to represent the ideal effect and actual performance of the pitch error compensation of the rotary axis. The rotation positioning accuracy test of the rotary axis is completed with a laser interferometer and rotary calibration device. By the measured angular positioning error of the non-compensated points, the Levenberg-Marquardt algorithm is used to identify the parameter of the piecewise function, and the optimized linkage parameters of the rotary axis are obtained. By the measured angular positioning error of the integer points of the rotary axis, the pitch error compensation value is modified. The distribution of the calculated and measured angular positioning error of the rotary axis under the pitch error compensation is consistent. The compensation results show that the positioning accuracy of the rotary axis can be greatly improved and that it meets the work requirement of the compound machine. The piecewise function of pitch error compensation, linkage parameter identification and improved method of pitch error compensation proposed in this article offer certain reference and application value. The results can improve the rotation positioning accuracy of the rotary axes of machine tools with planar linkages.

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Geometric accuracy enhancement of five-axis machine tool based on error analysis

Guo

Mei

Jiang

2019

Int J Adv Manuf Technol

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Single-axis driven measurement method to identify position-dependent geometric errors of a rotary table using double ball bar

Cited by 17 publications

References 27 publications

Vision-based measurement for decoupling identification of geometric errors of rotating axes for five-axis platform

Vision-based measurement for decoupling identification of geometric errors of rotating axes for five-axis platform

Analysis and improvement of the positioning accuracy of rotary axes of compound machine tools based on pitch error compensation

Geometric accuracy enhancement of five-axis machine tool based on error analysis

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