Title:
HIGHLY DYNAMIC WIDE-RANGE ANY-CONTOUR-ERROR MONOCULAR SIX-DIMENSIONAL MEASUREMENT METHOD FOR NUMERICAL CONTROL MACHINE TOOL
Document Type and Number:
WIPO Patent Application WO/2019/090487
Kind Code:
A1
Abstract:
Disclosed is a highly dynamic wide-range any-contour-error monocular six-dimensional measurement method for a numerical control machine tool (4), which belongs to the field of machine tool dynamic error detection, and relates to a highly dynamic wide-range any-contour-error six-dimensional measurement method for the numerical control machine tool (4), the monocular vision measurement technology thereof cooperating with short-time stroboscopic illumination and a prior standard plate (7). In the method, a measurement tool and a measurement system are designed, and a monocular vision pose algorithm is used for combination with prior knowledge to increase the dimensionality and range of a machine tool interpolation contour capable of being measured by vision. Combined with an error distribution principle, a small measurement view field (21) is utilized for improving the view field measurement precision of coding elements (8); an actual six-dimensional motion contour of the machine tool can be obtained by carrying out traversal photography on each frame of image; and in comparison with a nominal motion contour of the machine tool, six-dimensional errors generated by the interpolation contour of the numerical control machine tool (4) can be resolved. By combining the monocular vision pose algorithm with a reference conversion method, the dimensionality of the machine tool interpolation contour measured by vision is improved; and wide-range any-contour-error six-dimensional measurement of the numerical control machine tool (4) in the small view field is achieved.
Inventors:
LIU WEI (CN)
JIA ZHENYUAN (CN)
LI XIAO (CN)
PAN YI (CN)
MA XIN (CN)
MA JIANWEI (CN)
JIA ZHENYUAN (CN)
LI XIAO (CN)
PAN YI (CN)
MA XIN (CN)
MA JIANWEI (CN)
Application Number:
PCT/CN2017/109782
Publication Date:
May 16, 2019
Filing Date:
November 07, 2017
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
B23Q17/24
Foreign References:
| CN107971831A | 2018-05-01 | |||
| CN105798704A | 2016-07-27 | |||
| CN105252341A | 2016-01-20 | |||
| CN105043259A | 2015-11-11 | |||
| CN101329164A | 2008-12-24 | |||
| US5956253A | 1999-09-21 | |||
| JP2016040531A | 2016-03-24 |
Other References:
See also references of EP 3511122A4
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