Metrological performance of optical coordinate measuring machines under industrial conditions

Carmignato, Simone; Voltan, A.; Savio, Enrico

doi:10.1016/j.cirp.2010.03.128

Cited by 39 publications

(17 citation statements)

References 7 publications

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“…The dimensions verified in this work piece are the following: The diameter (D) of each of the buttons, the height (A) of button 1, and the length (L) of each of the sides (LA, LB, LC, and LD). The nominal values of each dimension are the following: D = 5.0 mm, A = 1.7 mm, LA and LB = 31.0 mm, and LB and LD = 16.0 mm ( Figure 5 f) [ 23 ].…”

Section: Methodsmentioning

confidence: 99%

Analysis of Surface Extraction Methods Based on Gradient Operators for Computed Tomography in Metrology Applications

et al. 2018

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Among the multiple factors influencing the accuracy of Computed Tomography measurements, the surface extraction process is a significant contributor. The location of the surface for metrological applications is generally based on the definition of a gray value as a characteristic of similarity to define the regions of interest. A different approach is to perform the detection or location of the surface based on the discontinuity or gradient. In this paper, an adapted 3D Deriche algorithm based on gradient information is presented and compared with a previously developed adapted Canny algorithm for different surface types. Both algorithms have been applied to nine calibrated workpieces with different geometries and materials. Both the systematic error and measurement uncertainty have been determined. The results show a significant reduction of the deviations obtained with the Deriche-based algorithm in the dimensions defined by flat surfaces.

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Section: Methodsmentioning

confidence: 99%

Analysis of Surface Extraction Methods Based on Gradient Operators for Computed Tomography in Metrology Applications

et al. 2018

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“…The idea of this artifact is that there exists a single mismatch position of the calottes, allowing five different parallel length measurement distances as required by the ISO 10360-8 standard. Similar to sphere cube calottes, PTB [10] also developed a sphere plate calotte artifact (Fig. 2c).…”

Section: Performance Verification Of Microscalementioning

confidence: 99%

“…Moreover, a simple design is important to facilitate the verification procedure [9], making it short enough, including both set-up and execution of the procedure, so that it is compatible with industrial requirements. Many studies have been conducted regarding procedures and artifacts for performance evaluation of optical distance sensor (non-contact) metrology instruments in macroscale metrology [10], [11], [12].…”

Section: Performance Verification Of Microscalementioning

confidence: 99%

Performance Verification of a 4-Axis Focus Variation Co-Ordinate Measuring System

Moroni

Syam

Petrò

2017

IEEE Trans. Instrum. Meas.

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Abstract-Performance verification of a coordinate measuring system (CMS) is important for instrument acceptance, reverification, comparability as well as measurement traceability to the definition of the meter. State-of-the-art ISO 10360 standard series is the reference text about the procedure of verification for CMS. Specifically, ISO 10360-8 considers optical distance sensor based CMSs. This article proposes procedures and artifacts for performance verification of focus variation-based CMS for a simultaneous 4-axis measuring mode. The proposal is inspired by, but goes beyond, the ISO 10360 standard, proposing an original solution for simultaneous linear and rotational axes verification.

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“…Authors found that the influences of an extraneous light and reflections are the reasons for the higher uncertainty values. In [ 8 ], Carmignato presented an industrial comparison of CMMs equipped with optical sensors, performed in Europe through 1.5-year time period. Participants were chosen mainly from small-medium size industrial companies.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Background Illumination Influence on Accuracy of Measurements Performed on Optical Coordinate Measuring Machine Equipped with Video Probe

Harmatys

Gąska

et al. 2021

Sensors

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Currently the Coordinate Measuring Technique is facing new challenges both in terms of used methodology and a speed of measurement. More and more often modern optical systems or multisensor systems replace classic solutions. Measurement performed using the optical system is more vulnerable to incorrect points acquisition due to such factors as an inadequate focus or parameters of applied illumination. This article examines the effect of an increasing illumination on the measurement result. A glass reference plate with marked circles and a hole plate standard were used for the measurements performed on a multi-sensor machine Zeiss O’ Inspect 442. The experiment consisted of measurements of standard objects with different values of the backlight at the maximum magnification. Such approach allows to assess the influence of controlled parameter on errors of diameter and form measurements as well as an uncertainty of measurements by determination of ellipses of point repeatability. The analysis of the obtained results shows that increasing backlight mainly affects the result of the diameter measurement.

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Metrological performance of optical coordinate measuring machines under industrial conditions

Cited by 39 publications

References 7 publications

Analysis of Surface Extraction Methods Based on Gradient Operators for Computed Tomography in Metrology Applications

Analysis of Surface Extraction Methods Based on Gradient Operators for Computed Tomography in Metrology Applications

Performance Verification of a 4-Axis Focus Variation Co-Ordinate Measuring System

Assessment of Background Illumination Influence on Accuracy of Measurements Performed on Optical Coordinate Measuring Machine Equipped with Video Probe

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