Measuring Vertical Error of the Rotating Laser

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Measuring Vertical Error of the Rotating Laser

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[1]ZHANG Weidong,ZHAO Fengxia,SU Qinglei,et al.Measuring Vertical Error of the Rotating Laser[J].Journal of Zhengzhou University (Engineering Science),2023,44(01):77-82.[doi:10.13705/j.issn.1671-6833.2023.01.005]

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Journal of Zhengzhou University (Engineering Science)[ISSN 1671-6833/CN 41-1339/T] Volume: 44卷 Number of periods: 2023 01 Page number: 77-82 Column: Public date: 2022-12-06

Title:: Measuring Vertical Error of the Rotating Laser

Author(s):: ZHANG Weidong¹; ZHAO Fengxia²; SU Qinglei¹; CHENG Pengli¹; NIE Jinling¹; 1.Henan Institute of Metrology, Zhengzhou 450000, China; 2.School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou 450001, China

Keywords:: rotating laser; vertical error; deflective deviation; total deviation of the rotating axis from the axis; spherical triangle

CLC:: TB922；O43

DOI:: 10.13705/j.issn.1671-6833.2023.01.005

Abstract:: In order to test the vertical accuracy of the vertical level plane about the rotating laser, the vertical level error of the laser level was analyzed. Using the sine and cosine theorems of spherical triangles, the calculation formula of total deviation of the rotating axis from the axis of the rotating laser was deduced. The mathematical model of the deflective deviation with the total deviation of the rotating axis from the axis was established. A special test device with double light pipes based on horizontal axis symmetry was built, and a scheme was designed to first measure the error component separately and then synthesize the vertical error, and experiments were carried out to verify it. The results showed that the maximum difference was no more than 6.3" obtained in our scheme in different instrument poses, which was better than the maximum difference of 16.5" in the traditional scheme, which proved that the designed scheme was technically feasible, and the mathematical model was accurate and reliable.

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