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New low cost sensing head and taut wire method for automated straightness measurement of machine tool axes

Borisov, Oleg, Fletcher, Simon, Longstaff, Andrew P. and Myers, Alan (2013) New low cost sensing head and taut wire method for automated straightness measurement of machine tool axes. Optics and lasers in engineering, 51 (8). pp. 978-985. ISSN 0143-8166

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This paper describes a novel method to measure straightness error of an axis of motion with a system utilizing taut wire, optical sensor and reference error cancellation technique. In contrast to commonly used taut wire, straightedge or laser-based methods it combines simplicity of setup and low cost with high levels of automation, accuracy and repeatability. An error cancellation technique based on two-point method is applied for the first time to a versatile reference object which can be mounted at any place of machine’s working volume allowing direct measurement of motion straightness of a tool point. Experimental results on a typical machine tool validate performance of the proposed taut wire system with a commercial laser interferometer operating in the same conditions is used as a reference. The proposed method shows highly repeatable results of better than ±0.25μm over the range of 0.48m and measurement accuracy comparable to the interferometer of ±0.5μm.

Item Type: Article
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Schools: School of Computing and Engineering
School of Computing and Engineering > Centre for Precision Technologies > EPSRC Centre for Innovative Manufacturing in Advanced Metrology
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Depositing User: Sharon Beastall
Date Deposited: 07 Mar 2013 09:20
Last Modified: 28 Aug 2021 20:07


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