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In-line quality control utilizing close-range photogrammetry and a CAD-model
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-7566-3656
Viospatia AB, Artillerigatan 33, 621 38 Visby, Sweden.ORCID iD: 0000-0001-8486-3054
Viospatia AB, Artillerigatan 33, 621 38 Visby, Sweden.
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2021 (English)In: Engineering Research Express, E-ISSN 2631-8695, Vol. 3, no 3, article id 035029Article in journal (Refereed) Published
Abstract [en]

This paper presents an overview of a measurement system that is designed for in-line shape inspection of metal sheet components in real-time utilizing pre-calibrated close-range photogrammetry and a CAD-model. The system is currently designed to measure parts thrown out on a conveyor belt that moves at about 1 m s−1 at a frequency of 0.5 Hz or less without fixturing. Detected features on the components in the camera images are used to align the CAD-model, describing the nominal shape, to the images from which required deviations are computed using photogrammetry. The measurement volume of the current system is 500 × 800 × 200 mm3 and absolute measurements are performed with an accuracy in the order of 0.1 mm. The in-line functionalities of the system have been verified at several real production sites in Sweden. In this paper, the basic components of the system are described together with a few results from real tests.

Place, publisher, year, edition, pages
Institute of Physics (IOP), 2021. Vol. 3, no 3, article id 035029
Keywords [en]
close-range photogrammetry, in-line metrology, shape verification, automatic geometry control
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-86563DOI: 10.1088/2631-8695/ac0ff1ISI: 000970115700001Scopus ID: 2-s2.0-85114192884OAI: oai:DiVA.org:ltu-86563DiVA, id: diva2:1584427
Funder
Vinnova
Note

Validerad;2021;Nivå 2;2021-12-06 (marisr)

Available from: 2021-08-12 Created: 2021-08-12 Last updated: 2026-03-30Bibliographically approved

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Sjödahl, MikaelBergström, Per

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