This paper proposes a bi-directional laser sequential step diagonal measuring method for three-axis vertical machining centers. Different measure paths are particularly designed for positive and negative directions, and corresponding error decoupling models are established. Based on the laser measuring data along these bi-directional paths, 18 geometric errors can be identified simultaneously, including 6 angular errors, 3 positioning errors, 6 straightness errors and 3 squareness errors. Compared with single directional step diagonal measurements, the proposed bi-directional mothed is more efficient and can identify more error items, namely 6 angular errors. Experimental tests were conducted on a three-axis vertical machining center. Decoupled error items obtained by the proposed bi-direction measurements coincide with those from direct measurements via a laser Doppler displacement meter, which verified the feasibility of the proposed method. Finally, the position error of the machine whole workspace was predicted by building volumetric error model and the machine accuracy was improved.
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ASME 2018 13th International Manufacturing Science and Engineering Conference
June 18–22, 2018
College Station, Texas, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5137-1
PROCEEDINGS PAPER
Measuring and Modeling of Volumetric Errors for Vertical Machining Centers Based on Bi-Directional Laser Sequential Step Diagonal Measurement
Huimin Li,
Huimin Li
Shanghai Jiao Tong University, Shanghai, China
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Sitong Xiang,
Sitong Xiang
Ningbo University, Ningbo, China
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Ming Deng,
Ming Deng
Shanghai Jiao Tong University, Shanghai, China
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Mengrui Zhu,
Mengrui Zhu
Shanghai Jiao Tong University, Shanghai, China
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Zhengchun Du,
Zhengchun Du
Shanghai Jiao Tong University, Shanghai, China
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Jianguo Yang
Jianguo Yang
Shanghai Jiao Tong University, Shanghai, China
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Huimin Li
Shanghai Jiao Tong University, Shanghai, China
Sitong Xiang
Ningbo University, Ningbo, China
Ming Deng
Shanghai Jiao Tong University, Shanghai, China
Mengrui Zhu
Shanghai Jiao Tong University, Shanghai, China
Zhengchun Du
Shanghai Jiao Tong University, Shanghai, China
Jianguo Yang
Shanghai Jiao Tong University, Shanghai, China
Paper No:
MSEC2018-6579, V003T02A022; 9 pages
Published Online:
September 24, 2018
Citation
Li, H, Xiang, S, Deng, M, Zhu, M, Du, Z, & Yang, J. "Measuring and Modeling of Volumetric Errors for Vertical Machining Centers Based on Bi-Directional Laser Sequential Step Diagonal Measurement." Proceedings of the ASME 2018 13th International Manufacturing Science and Engineering Conference. Volume 3: Manufacturing Equipment and Systems. College Station, Texas, USA. June 18–22, 2018. V003T02A022. ASME. https://doi.org/10.1115/MSEC2018-6579
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