Comparison of Different Method of Measurement Geometry Using CMM, Optical Scanner and Computed Tomography 3D

Gapiński, Bartosz; Wieczorowski, Michał; Marciniak-Podsadna, Lidia; Dybała, Bogdan; Ziółkowski, Grzegorz

doi:10.1016/j.proeng.2014.02.230

Cited by 71 publications

(54 citation statements)

References 8 publications

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“…Application of computed tomography X-ray 3D allows non-contact measurement of geometrical features inside the material, which was not possible previously [19]. The main drawbacks of 3D tomography are the limited size of the measured object and the high price of measuring instruments.…”

Section: Methods Of Roundness and Waviness Measurementmentioning

confidence: 99%

Identification and analysis of optimal method parameters of the V-block waviness measurements

Adamczak¹,

Zmarzły²,

Stępień³

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. At the Kielce University of Technology, a new method of waviness measurement of cylindrical surfaces has been developed. The article deals with the research conducted to find the optimal V-block method parameters that can be used in a measuring device applied to waviness measurement of cylindrical surfaces. In order to keep high measuring accuracy of V-block method, all detectability coefficients which are function of V-block method parameters should not be negative. For this purpose computations were carried out in order to find such angular parameters that can be easily applied in measuring device and allow for obtaining positive detectability coefficients. Results of the study presented in this paper make it possible to modify the design of the measuring device. According to the authors, it will result in increasing the accuracy of V-block waviness measurement of cylindrical parts.Key words: V-block method, waviness measurement, detectability coefficient. Identification and analysis of optimal method parameters of the V-block waviness measurementsS. ADAMCZAK, P. ZMARZŁY* and K. STĘPIEŃFaculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, 7 1000-lecia P. P. Ave., PL-25314 Kielce, Poland ments can also be used to measure cylindricity using different measuring strategy [8,9]. Most of them are suitable for measuring form deviations of small cylindrical elements under laboratory conditions [10]. The growing demands of heavy industry require developing measuring methods that can be performed in-situ, for example, directly on machine tool. For such measurements the V-block method can be used. The first person to conduct research related to the V-block method was a German scientist Georg von Berndt at the beginning of the twentieth century. Boerdijk used harmonic analysis based on trigonometric Fourier series for evaluation of roundness profile measured by the V-block method. An interesting measuring system was developed by Witzke [11]. The measuring device proposed consisted of two V-blocks and an inductive probe. Furthermore, Witzke also carried out computer simulations of the V-block angles. At that time research on the change of the sensor position relative to the axis of the V-block was carried out, which resulted in the introduction of non-symmetric three-point method. In consequence, a number of mathematical models used to complex analysis and to increase V-block method accuracy were developed. Interesting in-situ roundness measuring mechanism based on V-block method was described in [12]. The measuring device is composed of a V-block and an adaptive telescopic support and can be used to measure roundness deviation of crankshaft pin journals directly on grinding machine. Research work related with the application of the V-block method for roundness measurement was also carried out in USA [13].Above mentioned research works have been related with the application of the V-block method to assess roundness measurement only, not to assess waviness, which is more difficult ta...

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Section: Methods Of Roundness and Waviness Measurementmentioning

confidence: 99%

Identification and analysis of optimal method parameters of the V-block waviness measurements

Adamczak¹,

Zmarzły²,

Stępień³

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Computed tomography method is known for over 40 years when it was first implemented in field of medicine, and later from 1980s in field of material analysis [9]. Idea for applying computed tomography for dimensional measurements emerged at the beginning of 1990s when first dimensional measurement was done.…”

Section: Usage Of Computed Tomography In Dimensional Measurementsmentioning

confidence: 99%

Influence of Geometrical Magnification on Computed Tomography Dimensional Measurements

Horvatic¹,

Runje²,

Butkovic³

2016

Proceedings of the 27th International DAAAM Symposium 2016

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Computed tomography is a widely used method in the field of dimensional measurements. It is a non-contact, non-destructive measurement method that enables insight into both external and internal geometry of measured part which allows measurement of characteristics otherwise unreachable with tactile measurement methods. The biggest problem with computed tomography measurements is lack of metrological traceability. Because of the fact that a lot of parameters influence the whole measurement system, measurement uncertainty is still not evaluated. In this paper, influence of one of the influencing parameters, geometrical magnification, on results of dimensional and geometrical measurement characteristics was observed. Besides experimental research, simulations of computed tomography scanning were done. Measurement results obtained from both scanned and simulated models were compared and observed with regard to reference values. Results obtained from scanned model showed predictable behaviour compared to results obtained from simulated model.

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“…Przedmiot mierzony jest oświetlany wiązką promieniowania rentgenowskiego generowanego przez lampę, natomiast detekcja obrazu odbywa się na matrycy detektora w określonych położeniach kątowych badanego przedmiotu. Otrzymane obrazy są przetwarzane za pomocą specjalistycznego oprogramowania, dzięki czemu uzyskuje się trójwymiarowy model mierzonego elementu [1,4,5,8].…”

Section: Idea Pomiarów Tomograficznychunclassified

Gauges for accuracy tests of industrial CT scanners and examples of their application

Kowaluk¹,

Ratajczyk

2015

Mechanik

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Opisano metody sprawdzania dokładności pomiarów geometrycznych wykonywanych przemysłowymi tomografami komputerowymi, zgodnie z wytycznymi VDI/VDE 2630. Blatt 1.3. "Computertomografie in der dimensionellen Messtechnik", oraz zaprezentowano wzorce do wyznaczania dokładności tych pomiarów. Przedstawiono przykładowe wyniki kalibracji tomografu METRO-TOM 800 firmy Carl Zeiss za pomocą wzorca przestrzennego z elementami kulistymi oraz wzorca w postaci cylindrycznego stożka stopniowego. Wyznaczono wartości błędu pomiaru dłu-gości E oraz wartości niektórych parametrów charakteryzujących własności wymiarowo-materiałowe: GS, GF i GG. SŁOWA KLUCZOWE: przemysłowy tomograf komputerowy, wzorce do badania tomografów, błąd pomiaru długości, parametry wymiarowo-materiałowe

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Comparison of Different Method of Measurement Geometry Using CMM, Optical Scanner and Computed Tomography 3D

Cited by 71 publications

References 8 publications

Identification and analysis of optimal method parameters of the V-block waviness measurements

Identification and analysis of optimal method parameters of the V-block waviness measurements

Influence of Geometrical Magnification on Computed Tomography Dimensional Measurements

Gauges for accuracy tests of industrial CT scanners and examples of their application

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