First Coordinate Measurements Uncertainty Evaluation Software Fully Consistent with the GPS Philosophy

Jakubiec, Władysław; Płowucha, Wojciech

doi:10.1016/j.procir.2013.08.049

Cited by 10 publications

(8 citation statements)

References 4 publications

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“…The explanation of CMM length measurement error is briefly provided, and a detailed explanation can be found in standards [1,29]. First, measurements were performed with the use of the hole plate in three cross-sections using three points to precisely identify the midpoint of each hole using PC-DMIS.…”

Section: Measurement Resultsmentioning

confidence: 99%

“…One effective way of reducing significantly the correction due to reproducibility is using spectral analysis to identify the best sampling strategy and estimate the changes of the measurement results from the difference between the actual measurement points and the optimal sampling points to evaluate the uncertainty caused by the sampling strategy. Consequently, the influence of last parameter can be ignored when determining the number of optimal sampling points [29].…”

Section: Development Of the Measurement Modelmentioning

confidence: 99%

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Metrology and Measurement Systems

2021

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Reliable measurement uncertainty is a crucial part of the conformance/nonconformance decision-making process in the field of Quality Control in Manufacturing. The conventional GUM-method cannot be applied to CMM measurements primarily because of lack of an analytical relationship between the input quantities and the measurement. This paper presents calibration uncertainty analysis in commercial CMM-based Coordinate Metrology. For the case study, the hole-plate calibrated by the PTB is used as a workpiece. The paper focuses on thermo-mechanical errors which immediately affect the dimensional accuracy of manufactured parts of high-precision manufacturers. Our findings have highlighted some practical issues related to the importance of maintaining thermal equilibrium before the measurement. The authors have concluded that the thermal influence as an uncertainty contributor of CMM measurement result dominates the overall budgets for this example. The improved calibration uncertainty assessment technique considering thermal influence is described in detail for the use of a wide range of CMM users.

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Section: Measurement Resultsmentioning

confidence: 99%

Section: Development Of the Measurement Modelmentioning

confidence: 99%

Metrology and Measurement Systems

2021

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“…Since the 1990s, the evaluation of uncertainties has been the subject of a lot of published work [12][13][14][15][16][17][18][19]. Regarding uncertainties, the main ideas are contained in the documents of the Join Committee for Guides in Metrology, i.e.…”

Section: Introductionmentioning

confidence: 99%

Impact of thermal gradients on the geometry correction of a bridge coordinate measuring machine

Hennebelle¹,

Coorevits²,

Asmai³

et al. 2020

Meas. Sci. Technol.

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If the problems related to the parts and measurement strategy of Coordinate Measuring Machines (CMMs) are not taken into consideration, temperature variations become the main source of measurement uncertainties. Indeed, they may cause variations in geometry as well as reference point drift. The effect of drift is sometimes minimized by CMM users and is not well quantified in general. The aim of this paper is to present a physical method to determine the evolution of CMM geometry and drift which is based directly on CMM temperature variations and construction parameters, i.e. the position of the axes measurement scales and reference points of each axis. The method is applied to a Zeiss CMM Contura G2. The consequences of these CMM evolutions are simulated in the measurement of a sphere generated by a Renishaw Machine Checking Gauge. The proposed method falls within the framework of an uncertainty assessment methodology performed by multi-level Monte Carlo simulation, where the first level corresponds to the characterization of the CMM evolution.

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“…J. Sładek et al have proposed an evaluation method of coordinate measurement uncertainty with the use of a virtual machine model based on the Monte Carlo method [14]. W. Jakubiec et al have discussed the problem of evaluating the CMM measurement uncertainty by Type-B methods and carried out relevant research on CMM uncertainty evaluation based on the GPS specifications [15,16]. P.B.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and Optimization of Task-oriented Measurement Uncertainty for Coordinate Measuring Machines Based on Geometrical Product Specifications

et al. 2018

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Measuring instruments are intended to be intelligent, precise, multi-functional and developing multidirectionally, scientific, and reasonable; the reliable evaluation of measurement uncertainty of precision instruments is also becoming more and more difficult, and the evaluation of the Coordinate Measuring Machines (CMM) measurement uncertainty is among the typical problems. Based on Geometric Product Specification (GPS), this paper has systematically studied the CMM uncertainty for evaluating the size and geometrical errors oriented toward measurement tasks, and thus has realized the rapid and reliable evaluation of the CMM uncertainty for task-oriented measurement. For overestimation of the CMM uncertainty for task-oriented measurements in the initial evaluation, a systematic optimization solution has been proposed. Finally, the feasibility and validity of the evaluation model and the optimization method have been verified by three different types of measurement examples of diameter, flatness and perpendicularity. It is typical and representative to systematically solve the problem of the CMM uncertainty for evaluating the measurement tasks targeted at dimensions and geometric errors, and the research contents can be effectively applied to solve the uncertainty evaluation problems of other precision instruments, which are of great practical significance not only for promoting the combination of modern uncertainty theory and practical applications but also for improving the application values of precision measurement instruments.

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First Coordinate Measurements Uncertainty Evaluation Software Fully Consistent with the GPS Philosophy

Cited by 10 publications

References 4 publications

Metrology and Measurement Systems

Metrology and Measurement Systems

Impact of thermal gradients on the geometry correction of a bridge coordinate measuring machine

Evaluation and Optimization of Task-oriented Measurement Uncertainty for Coordinate Measuring Machines Based on Geometrical Product Specifications

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