Accuracy of roundness assessment using air gauge with the slot-shaped measuring nozzle

Jakubowicz, Michał

doi:10.1016/j.measurement.2020.107558

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…There are some reports, though, demonstrating that in some conditions waviness of the profile Wt can be measured relatively accurately, with relative error of 5% [ 82 ]. Jakubowicz [ 83 ] proposed and investigated a roundness measuring air gauge with slot-shaped measuring nozzle. To assess ability of the as-modified air gauge, the author made a quantitative comparison with a reference method, calculating a relative error δRONt represented by a ratio of the difference between averages of pneumatic and stylus measurement results:

where

and

are roundness deviations calculated according to the standard ISO 12181-2011 for least squares fit of points collected with the tested pneumatic system and reference Hommel-Etamic roundscan 535 system, respectively.…”

Section: Research Directions In Recent Papersmentioning

confidence: 99%

Recent Development of Air Gauging in Industry 4.0 Context

Rucki

2023

Sensors

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The paper presents a review of the research reports published in 2012–2022, dedicated to air gauging. Since most of the results are somehow related to Industry 4.0 concept, the review put the air gauging to the context of fourth industrial revolution. It was found that despite substantial decrease of the number of published papers in recent years, the investigations are still performed to improve air gauges, both in static and in non-steady states. Researchers paid attention to the digitization of the results, models and simulations, uncertainty estimation, calibration, and linearization. Specific applications covered real-time monitoring and in-process control, as well as form and surface topography measurements. Proposed solutions for integration with computer systems seem suitable for the air gauges be included to the sensor networks built according to the Industry 4.0 concept.

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where

and

Section: Research Directions In Recent Papersmentioning

confidence: 99%

Recent Development of Air Gauging in Industry 4.0 Context

Rucki

2023

Sensors

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“…Various authors have dealt with different ways to improve the performance of pneumatic comparators. The influence of the measuring nozzle tip geometry was the subject of [10][11][12][13][14]. It was shown in these papers that fouling of the measuring nozzle head can be reduced by altering the geometry of the nozzle head.…”

Section: Introductionmentioning

confidence: 99%

On some important quantities influencing proper functioning of the differential pneumatic comparator

Burazer¹,

Skoko²,

Novković³

et al. 2022

FME Transactions

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Back-pressure air gauging is an effective and practical way of controlling machine parts in large-scale production. It is a non-contact measuring technique based on the flapper-nozzle effect. The proper functioning of a differential pneumatic comparator depends on several geometric parameters as well as flow conditions inside the device. The main problems of this controlling technique are the fouling of the measuring nozzle head and changes in the accuracy of the comparator. This paper examines the influence of the supply pressure, the diameter of the orifice in the measuring branch, and the axial distance in the flapper-nozzle area on pneumatic comparator performance. In a way, we are trying to optimize the performance of a given pneumatic comparator with respect to the tolerance field for which it is intended. The size, strength, and position of the vacuum in the flapper-nozzle area depend on the supply pressure and the axial distance between the measuring nozzle outlet cross-section and the workpiece surface. For a certain combination of these two parameters, we can influence the vacuum quantities. A pneumatic sensitivity of a comparator can be increased by increasing the supply pressure. The greater accuracy of the back pressure air gauge, the smaller the application range, i.e. the tolerance field that we can control with a given device.

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“…Huang et al propose an asymptotic search method in the paper [9] to obtain the coordinates of the concentric circles of the minimum zone model and calculate the roundness error. Jakubowicz et al discuss application of the slot-shaped nozzles in the air gauges for the roundness assessment in the paper [10]. Huang et al propose an improved method that integrates a bidirectional search of unequal probability and an offset movement mechanism, and the method can quickly and accurately evaluate the roundness.…”

Section: Introductionmentioning

confidence: 99%

A new method of roundness error evaluation based on twin support vector machines

Zheng

Cao

et al. 2021

Meas. Sci. Technol.

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The geometric error determines the product quality and function to a certain extent. Among them, the roundness error is one of the important indicators for evaluating the geometric error of shaft parts. With the increase of industrial requirements, there are higher requirements for the accuracy and efficiency of roundness error evaluation. However, most of the traditional roundness error evaluation models used in the industry can no longer meet the needs of current industrial processing in terms of efficiency and accuracy. This paper proposes a new roundness error evaluation method based on twin support vector machines (TWSVMs). First, according to the roundness error evaluation and the TWSVMs theory, the roundness error evaluation model with the TWSVMs is obtained. Then, experimental research and analysis are carried out, and the accuracy and efficiency of the traditional roundness evaluation method and the new method are compared. The research results show that the new roundness evaluation method based on the TWSVMs proposed in this paper can efficiently and accurately evaluate the roundness error, and can be applied to the online evaluation of the roundness error in industrial processing to improve the processing efficiency.

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Accuracy of roundness assessment using air gauge with the slot-shaped measuring nozzle

Cited by 8 publications

References 19 publications

Recent Development of Air Gauging in Industry 4.0 Context

Recent Development of Air Gauging in Industry 4.0 Context

On some important quantities influencing proper functioning of the differential pneumatic comparator

A new method of roundness error evaluation based on twin support vector machines

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