The Design and Implementation of a High-Precision Positioner Fixture

In this paper, a novel positioner fixture with a high repeated positioning accuracy and a high stiffness is proposed and investigated. A high-precision end-toothed disc is used to achieve the high repeated positioning accuracy of the designed positioner fixture. The mathematical models of the cumula...

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Autores principales: Zhao, Xuesen, Tan, Rongkai, Wang, Zhe, Zou, Xicong, Hu, Zhenjiang, Sun, Tao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8540473/
https://www.ncbi.nlm.nih.gov/pubmed/34683278
http://dx.doi.org/10.3390/mi12101227
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author Zhao, Xuesen
Tan, Rongkai
Wang, Zhe
Zou, Xicong
Hu, Zhenjiang
Sun, Tao
author_facet Zhao, Xuesen
Tan, Rongkai
Wang, Zhe
Zou, Xicong
Hu, Zhenjiang
Sun, Tao
author_sort Zhao, Xuesen
collection PubMed
description In this paper, a novel positioner fixture with a high repeated positioning accuracy and a high stiffness is proposed and investigated. A high-precision end-toothed disc is used to achieve the high repeated positioning accuracy of the designed positioner fixture. The mathematical models of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are analyzed. The allowable tolerance values of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are given. According to the theoretical calculation results, a prototype positioner fixture is fabricated and its repeated positioning accuracy and stiffness are tested. The test results indicate that the stiffness of the proposed positioner fixture is 1050.5 N/μm, which is larger than the previous positioner fixtures of the same type. The repeated positioning accuracy of the proposed positioner fixture in the x, y and z directions are ±0.48 μm, ±0.45 μm and ±0.49 μm, respectively, which is significantly higher than the previous positioner fixtures.
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spelling pubmed-85404732021-10-24 The Design and Implementation of a High-Precision Positioner Fixture Zhao, Xuesen Tan, Rongkai Wang, Zhe Zou, Xicong Hu, Zhenjiang Sun, Tao Micromachines (Basel) Article In this paper, a novel positioner fixture with a high repeated positioning accuracy and a high stiffness is proposed and investigated. A high-precision end-toothed disc is used to achieve the high repeated positioning accuracy of the designed positioner fixture. The mathematical models of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are analyzed. The allowable tolerance values of the cumulative error of the tooth pitch, the tooth alignment error and the error of the tooth profile half-angle of the end-toothed disc are given. According to the theoretical calculation results, a prototype positioner fixture is fabricated and its repeated positioning accuracy and stiffness are tested. The test results indicate that the stiffness of the proposed positioner fixture is 1050.5 N/μm, which is larger than the previous positioner fixtures of the same type. The repeated positioning accuracy of the proposed positioner fixture in the x, y and z directions are ±0.48 μm, ±0.45 μm and ±0.49 μm, respectively, which is significantly higher than the previous positioner fixtures. MDPI 2021-10-08 /pmc/articles/PMC8540473/ /pubmed/34683278 http://dx.doi.org/10.3390/mi12101227 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhao, Xuesen
Tan, Rongkai
Wang, Zhe
Zou, Xicong
Hu, Zhenjiang
Sun, Tao
The Design and Implementation of a High-Precision Positioner Fixture
title The Design and Implementation of a High-Precision Positioner Fixture
title_full The Design and Implementation of a High-Precision Positioner Fixture
title_fullStr The Design and Implementation of a High-Precision Positioner Fixture
title_full_unstemmed The Design and Implementation of a High-Precision Positioner Fixture
title_short The Design and Implementation of a High-Precision Positioner Fixture
title_sort design and implementation of a high-precision positioner fixture
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8540473/
https://www.ncbi.nlm.nih.gov/pubmed/34683278
http://dx.doi.org/10.3390/mi12101227
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