Detail publikace

Multi-view camera system for measurement of heavy forgings

HURNÍK, J. ZATOČILOVÁ, A. KONEČNÁ, T. ŠTARHA, P. KOUTNÝ, D.

Anglický název

Multi-view camera system for measurement of heavy forgings

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

Open-die forging is used to manufacture heavy durable parts such as shafts. In-process measurements are required for shape correction. The passive 3D measurement method is based on forging silhouettes in images and has demonstrated its advantages in this application. However, when using two cameras, only four tangents are available to determine the cross-section. In this paper, we propose a novel multi-camera multi-observation method for forging measurements; it increases the number of tangent lines used to determine the forging cross-section. The results suggest a decrease in measurement error proportional to the square root of the observation number. The six-observation precision is +/- 0.5 mm in a measurement volume of 6 x 6 x 2 m for axis straightness and diameter measurements (95% confidence interval). However, many outliers remain in case of diameter measurement. In addition, the forging circularity can be measured. The proposed system shows good agreement with the laser scanning measurement method. Overall, the system has considerable potential for forging manufacturing applications.

Anglický abstrakt

Open-die forging is used to manufacture heavy durable parts such as shafts. In-process measurements are required for shape correction. The passive 3D measurement method is based on forging silhouettes in images and has demonstrated its advantages in this application. However, when using two cameras, only four tangents are available to determine the cross-section. In this paper, we propose a novel multi-camera multi-observation method for forging measurements; it increases the number of tangent lines used to determine the forging cross-section. The results suggest a decrease in measurement error proportional to the square root of the observation number. The six-observation precision is +/- 0.5 mm in a measurement volume of 6 x 6 x 2 m for axis straightness and diameter measurements (95% confidence interval). However, many outliers remain in case of diameter measurement. In addition, the forging circularity can be measured. The proposed system shows good agreement with the laser scanning measurement method. Overall, the system has considerable potential for forging manufacturing applications.

Klíčová slova anglicky

Axis; Diameter; Edge detection; Forging; Measurement; Laser scanner; Silhouettes

Vydáno

27.07.2022

Nakladatel

SPRINGER LONDON LTD

Místo

LONDON

ISSN

0268-3768

Ročník

121

Číslo

11-12

Strany od–do

7295–7310

Počet stran

16

BIBTEX


@article{BUT178695,
  author="Jakub {Hurník} and Aneta {Zatočilová} and Tereza {Konečná} and Pavel {Štarha} and Daniel {Koutný},
  title="Multi-view camera system for measurement of heavy forgings",
  year="2022",
  volume="121",
  number="11-12",
  month="July",
  pages="7295--7310",
  publisher="SPRINGER LONDON LTD",
  address="LONDON",
  issn="0268-3768"
}