Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways
The straightness error of guideways is one of the key indicators of an ultra-precision machine, which plays an important role in the machining accuracy of a workpiece. In order to measure the straightness error of a long-distance ultra-precision guideway accurately, a splicing measurement for the st...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/9/1670 |
| _version_ | 1797578830370570240 |
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| author | Lian Zhou Nan Zheng Jie Li Zhigang Yuan Jian Wang Fei Fang Qiao Xu |
| author_facet | Lian Zhou Nan Zheng Jie Li Zhigang Yuan Jian Wang Fei Fang Qiao Xu |
| author_sort | Lian Zhou |
| collection | DOAJ |
| description | The straightness error of guideways is one of the key indicators of an ultra-precision machine, which plays an important role in the machining accuracy of a workpiece. In order to measure the straightness error of a long-distance ultra-precision guideway accurately, a splicing measurement for the straightness error of a guideway using a high-precision flat mirror and displacement sensor was proposed in this paper, and the data splicing processing algorithm based on coordinate transformation was studied. Then, comparative experiments on a splicing measurement and direct measurement of the straightness error were carried out on a hydrostatic guideway grinder. The maximum difference between the two measurements was 0.3 μm, which was far less than the straightness error of 5.8 μm. The experiment demonstrated the correctness of the proposed splicing measurement method and data processing algorithm. To suppress the influence of the straightness error on machining accuracy, a straightness error compensation algorithm based on error rotation transformation and vertical axis position correction was proposed, and the grinding experiment of a plane optics with a size of 1400 mm × 500 mm was carried out. Without error compensation grinding, the flatness error of the element was 7.54 μm. After error compensation grinding, the flatness error was significantly reduced to 2.98 μm, which was less than the straightness errors of the guideways. These results demonstrated that the straightness error of the grinding machine had been well suppressed. |
| first_indexed | 2024-03-10T22:27:20Z |
| format | Article |
| id | doaj.art-b0eb76c0c3f540538b1e7da39145e62c |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T22:27:20Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-b0eb76c0c3f540538b1e7da39145e62c2023-11-19T11:59:00ZengMDPI AGMicromachines2072-666X2023-08-01149167010.3390/mi14091670Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision GuidewaysLian Zhou0Nan Zheng1Jie Li2Zhigang Yuan3Jian Wang4Fei Fang5Qiao Xu6Research Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaResearch Center of Laser Fusion, China Academy of Engineering Physics, Chengdu 610093, ChinaThe straightness error of guideways is one of the key indicators of an ultra-precision machine, which plays an important role in the machining accuracy of a workpiece. In order to measure the straightness error of a long-distance ultra-precision guideway accurately, a splicing measurement for the straightness error of a guideway using a high-precision flat mirror and displacement sensor was proposed in this paper, and the data splicing processing algorithm based on coordinate transformation was studied. Then, comparative experiments on a splicing measurement and direct measurement of the straightness error were carried out on a hydrostatic guideway grinder. The maximum difference between the two measurements was 0.3 μm, which was far less than the straightness error of 5.8 μm. The experiment demonstrated the correctness of the proposed splicing measurement method and data processing algorithm. To suppress the influence of the straightness error on machining accuracy, a straightness error compensation algorithm based on error rotation transformation and vertical axis position correction was proposed, and the grinding experiment of a plane optics with a size of 1400 mm × 500 mm was carried out. Without error compensation grinding, the flatness error of the element was 7.54 μm. After error compensation grinding, the flatness error was significantly reduced to 2.98 μm, which was less than the straightness errors of the guideways. These results demonstrated that the straightness error of the grinding machine had been well suppressed.https://www.mdpi.com/2072-666X/14/9/1670straightness errorultra-precision guidewaysplitting measurementerror compensationflatness error |
| spellingShingle | Lian Zhou Nan Zheng Jie Li Zhigang Yuan Jian Wang Fei Fang Qiao Xu Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways Micromachines straightness error ultra-precision guideway splitting measurement error compensation flatness error |
| title | Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways |
| title_full | Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways |
| title_fullStr | Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways |
| title_full_unstemmed | Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways |
| title_short | Splicing Measurement and Compensation of Straightness Errors for Ultra-Precision Guideways |
| title_sort | splicing measurement and compensation of straightness errors for ultra precision guideways |
| topic | straightness error ultra-precision guideway splitting measurement error compensation flatness error |
| url | https://www.mdpi.com/2072-666X/14/9/1670 |
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