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Optical Engineering • Open Access

Coordinate measuring method with two operation modes based on the adjustable articulated arms
Author(s): Lianqing Zhu; Weixian Li; Zhikang Pan; Yangkuan Guo; Qingshan Chen

Paper Abstract

A coordinate measuring method with two operation modes, based on the adjustable articulated arms, is proposed to keep measurement capability in global space and improve the measurement precision in local space. The adjustable articulated arm coordinate measuring machine (AACMM) with an electromagnetic locking device can automatically switch between the all-free articulated arms operation mode and the partially bound articulated arms operation mode. In the former mode, three arms and six articulations can freely move and measure the coordinates of any point in global space. In the latter mode, the front two articulations are locked to improve the measurement precision by decreasing the importation of angle errors in the local space. A prototype of the adjustable AACMM has also been designed and developed. A mathematical model for the adjustable AACMM has been built. Theoretical analysis and numerical simulation show that the partially bound AACMM performed much better than the all-free AACMM in single point repeatability and length measurement precision in the local space. Therefore, the proposed coordinate measuring method based on the adjustable articulated arms is verified as being effective.

Paper Details

Date Published: 25 June 2014
PDF: 6 pages
Opt. Eng. 53(12) 122407 doi: 10.1117/1.OE.53.12.122407
Published in: Optical Engineering Volume 53, Issue 12
Show Author Affiliations
Lianqing Zhu, Beijing Information Science & Technology Univ. (China)
Beijing Engineering Research Ctr. of Optoelectronic Information and Instrument (China)
Weixian Li, Beijing Information Science & Technology Univ. (China)
Beijing Engineering Research Ctr. of Optoelectronic Information and Instrument (China)
Zhikang Pan, Beijing Information Science & Technology Univ. (China)
Beijing Engineering Research Ctr. of Optoelectronic Information and Instrument (China)
Yangkuan Guo, Beijing Information Science & Technology Univ. (China)
Beijing Engineering Research Ctr. of Optoelectronic Information and Instrument (China)
Qingshan Chen, Beijing Information Science & Technology Univ. (China)
Beijing Engineering Research Ctr. of Optoelectronic Information and Instrument (China)


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