Investigation of best parameters’ combinations for coordinate measuring technique

Magdziak, Marek; Ratnayake, R. M. Chandima

doi:10.1016/j.procir.2018.08.173

Cited by 8 publications

(9 citation statements)

References 8 publications

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“…The effectiveness of contact coordinate measurements depends on the accuracy of the measurements and the duration of a given measurement task. The accuracy of contact coordinate measurements is influenced by a number of factors, including for instance, the environmental conditions prevailing in a measurement laboratory where a coordinate measuring machine is located, the accuracy of the coordinate measuring system and the applied measurement strategy [ 11 ]. Depending on the type of a coordinate measuring system, a measurement strategy may include various elements.…”

Section: Introductionmentioning

confidence: 99%

“…Depending on the type of a coordinate measuring system, a measurement strategy may include various elements. For example, in the case of a coordinate measuring machine equipped with a contact measuring probe, the elements of a measurement strategy may include the scanning speed, the number of measurement points and their distribution on the surface of a measured product, the probe radius correction method adopted for calculating corrected measurement points based on the indicated measurement points, the filtration parameters of the measurement results, the methods of calculating associated elements, the ways of mounting a measured product on a CMM and determining a coordinate system of the workpiece under investigation, the settings regarding the removal of outliers and the use of a rotary table [ 11 , 12 , 13 ]. An overview of the factors determining the final coordinate measurement results is presented in Figure 1 , which also includes examples of the elements that are part of the coordinate measurement strategy.…”

Section: Introductionmentioning

confidence: 99%

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Estimating Time of Coordinate Measurements Based on the Adopted Measurement Strategy

Magdziak

2022

Sensors

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This article concerns coordinate metrology and contact coordinate measurements which are conducted using a coordinate measuring machine. The paper presents the results of experimental investigations, based on which a model to calculate the time needed to conduct coordinate measurements to determine the flatness deviation of a selected surface of a machined product was developed. The time taken and the accuracy of the coordinate measurements influence the effectiveness of coordinate measurements of geometrical quantities of products and the productivity of the entire manufacturing process. Therefore, when planning a strategy for the coordinate measurement process, apart from considering the measurement uncertainty, the duration of individual measurement tasks should also be taken into account. A coordinate measurement time model was developed by use of response surface methodology (RSM). Experimental research was carried out using an ACCURA II coordinate measuring machine equipped with a VAST XXT measuring probe and cooperating with Calypso inspection software. The coordinate measurement time model which was developed was implemented in the selected metrology software of the coordinate measuring machine. The purpose of the implementation was to enable application of the mathematical model created into industrial practice.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimating Time of Coordinate Measurements Based on the Adopted Measurement Strategy

Magdziak

2022

Sensors

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“…Other factors that affect the accuracy of coordinate measurements are, among others, environmental conditions prevailing in a measurement laboratory, the accuracy of applied measuring probes and the level of training of persons performing coordinate measurements. The detailed review of the factors determining the final results of coordinate measurements and measurement uncertainty is presented in the work [3].…”

Section: Introductionmentioning

confidence: 99%

“…In the coordinate measuring technique different measurement strategies may be applied at different stages of coordinate measurements of products. Therefore, the strategy of contact coordinate measurements may include a lot of elements, e.g., applied algorithms of the probe radius correction process [4], scanning velocity [3], the methods of data processing [5], a number of measurement points and their distribution on measured surfaces of analyzed products [6].…”

Section: Introductionmentioning

confidence: 99%

Selection of the Best Model of Distribution of Measurement Points in Contact Coordinate Measurements of Free-Form Surfaces of Products

Magdziak

2019

Sensors

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The article presents a new method for determining the distribution of measurement points, which can be used in the case of contact coordinate measurements of curvilinear surfaces of products. The developed method is based on multi-criteria decision analysis. In the case of the new method, the selection of the distribution of measurement points on free-form surfaces is carried out based on the analysis of five different criteria. The selection of the best model of the distribution of measurement points results from the accuracy of coordinate measurements, the time needed to complete measurement tasks, the number of measurement points, the accuracy of the substitute surface representing the measured free-form surface and the area where measurement points are located. The purpose of using the developed method of the distribution of measurement points is to increase the performance of coordinate measurements primarily by increasing the automation of strategy planning of measurements of curvilinear surfaces and improving the accuracy of measurements of free-form surfaces of products. The new method takes into account various aspects of coordinate measurements to determine the final model of the distribution of measurement points on measured surfaces of products, thereby increasing the probability of the proper determination (i.e., identifying the highest deviations of a product) of the location of measurement points on the surfaces of a measured object. The paper presents an example of the application of the created method, which concerns the selection of the best model of the distribution of measurement points on a selected free-form surface. This example is based on, among others, the results of experimental investigations, which were carried out by using the ACCURA II coordinate measuring machine equipped with the VAST XXT measuring probe and the Calypso measurement software. The results of investigations indicate a significant reduction in time of coordinate measurements of products when using the new method for determining the distribution of measurement points. However, shortening the time of coordinate measurements does not reduce their accuracy.

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“…Zhao et al [7] presents a B-spline curve based method while Magdziak and Chamdima Ratnayake [8] use a fuzzy inference system in order to determine the number and the distribution of measure points. In case of scan type measuring, the process parameter should be optimized [9] considering the error of the measure and evaluation.…”

Section: Introductionmentioning

confidence: 99%

The Effect of the Feed Direction on the Micro- and Macro Accuracy of 3D Ball-end Milling of Chromium-Molybdenum Alloy Steel

2019

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The machining of free form surfaces is one of the most challenging problems in the field of metal cutting technology. The produced part and machining process should satisfy the working, accuracy, and financial requirements. The accuracy can describe dimensional, geometrical, and surface roughness parameters. In the current article, three of them are investigated in the case of the ball-end milling of a convex and concave cylindrical surface form 42CrMo4 steel alloy. The effect of the tool path direction is investigated and the other cutting parameters are constant. The surface roughness and the geometric error are measured by contact methods. Based on the results, the surface roughness, dimensional error, and the geometrical error mean different aspects of the accuracy, but they are not independent from each other. The investigated input parameters have a similar effect on them. The regression analyses result a very good liner regression for geometric errors and shows the importance of surface roughness.

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Investigation of best parameters’ combinations for coordinate measuring technique

Cited by 8 publications

References 8 publications

Estimating Time of Coordinate Measurements Based on the Adopted Measurement Strategy

Estimating Time of Coordinate Measurements Based on the Adopted Measurement Strategy

Selection of the Best Model of Distribution of Measurement Points in Contact Coordinate Measurements of Free-Form Surfaces of Products

The Effect of the Feed Direction on the Micro- and Macro Accuracy of 3D Ball-end Milling of Chromium-Molybdenum Alloy Steel

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