Details
Originalsprache | Englisch |
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Titel des Sammelwerks | Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022 |
Herausgeber/-innen | Gabriela Vincze, Frédéric Barlat |
Seiten | 1211-1220 |
Seitenumfang | 10 |
Publikationsstatus | Veröffentlicht - 2022 |
Veranstaltung | 25th International Conference on Material Forming, ESAFORM 2022 - Braga, Portugal Dauer: 27 Apr. 2022 → 29 Apr. 2022 |
Publikationsreihe
Name | Key Engineering Materials |
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Band | 926 KEM |
ISSN (Print) | 1013-9826 |
ISSN (elektronisch) | 1662-9795 |
Abstract
According to the current state of the art, wear conditions of forging dies are assessed visually in the dismantled state, as there is no measuring procedure available for inline wear measurement of hot forging dies. This paper introduces a handling concept for automated loading and in-situ tool inspection for a hot forging process. An industrial robot with a quick-change system mounted on its endeffector is utilized to integrate both, a high-temperature gripper and an endoscopic 3D-measurement sensor. By adapting the measuring method of fringe projection to an endoscopic design, the measuring system can be navigated into the difficult-to-access geometry of the forge and take high-precision 3D-measurements of the forging die. The ambient air heated by the forming process creates an inhomogeneous refractive index field around the measuring system and the hot die, which deflects the light during the measurement and deteriorates the overall accuracy of the reconstructed point cloud. This can lead to strong deviations in the reconstructed point clouds and the functional geometries calculated from them. Using a compressed air actuator, the measuring system can be protected from the heat effects of the measuring object, as well as from dirt. Furthermore, the effect of the inhomogeneous refractive index field can be significantly reduced. With this approach the in-situ wear measurement at highly stressed regions using the example of the mandrel radius and the flash radius will be demonstrated. These functional elements are of particular interest, as the thermal stress is high and large material flow takes place. For the wear determination, the functional elements of the tool are examined in detail by fitting geometrical features into the reconstructed point clouds and determining the deviations from a reference geometry. In addition, the measurement data is validated with the aid of a commercially available state-of-the-art measurement system.
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Ingenieurwesen (insg.)
- Maschinenbau
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Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022. Hrsg. / Gabriela Vincze; Frédéric Barlat. 2022. S. 1211-1220 (Key Engineering Materials; Band 926 KEM).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - In-Situ Wear Measurement of Hot Forging Dies Using Robot Aided Endoscopic Fringe Projection
AU - Middendorf, Philipp
AU - Rothgänger, Marcel
AU - Peddinghaus, Julius
AU - Brunotte, Kai
AU - Uhe, Johanna
AU - Behrens, Bernd Arno
AU - Quentin, Lorenz
AU - Kästner, Markus
AU - Reithmeier, Eduard
N1 - Funding Information: This conference contribution was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – SFB 871/3 – 119193472; SFB 1153/2 - 252662854.
PY - 2022
Y1 - 2022
N2 - According to the current state of the art, wear conditions of forging dies are assessed visually in the dismantled state, as there is no measuring procedure available for inline wear measurement of hot forging dies. This paper introduces a handling concept for automated loading and in-situ tool inspection for a hot forging process. An industrial robot with a quick-change system mounted on its endeffector is utilized to integrate both, a high-temperature gripper and an endoscopic 3D-measurement sensor. By adapting the measuring method of fringe projection to an endoscopic design, the measuring system can be navigated into the difficult-to-access geometry of the forge and take high-precision 3D-measurements of the forging die. The ambient air heated by the forming process creates an inhomogeneous refractive index field around the measuring system and the hot die, which deflects the light during the measurement and deteriorates the overall accuracy of the reconstructed point cloud. This can lead to strong deviations in the reconstructed point clouds and the functional geometries calculated from them. Using a compressed air actuator, the measuring system can be protected from the heat effects of the measuring object, as well as from dirt. Furthermore, the effect of the inhomogeneous refractive index field can be significantly reduced. With this approach the in-situ wear measurement at highly stressed regions using the example of the mandrel radius and the flash radius will be demonstrated. These functional elements are of particular interest, as the thermal stress is high and large material flow takes place. For the wear determination, the functional elements of the tool are examined in detail by fitting geometrical features into the reconstructed point clouds and determining the deviations from a reference geometry. In addition, the measurement data is validated with the aid of a commercially available state-of-the-art measurement system.
AB - According to the current state of the art, wear conditions of forging dies are assessed visually in the dismantled state, as there is no measuring procedure available for inline wear measurement of hot forging dies. This paper introduces a handling concept for automated loading and in-situ tool inspection for a hot forging process. An industrial robot with a quick-change system mounted on its endeffector is utilized to integrate both, a high-temperature gripper and an endoscopic 3D-measurement sensor. By adapting the measuring method of fringe projection to an endoscopic design, the measuring system can be navigated into the difficult-to-access geometry of the forge and take high-precision 3D-measurements of the forging die. The ambient air heated by the forming process creates an inhomogeneous refractive index field around the measuring system and the hot die, which deflects the light during the measurement and deteriorates the overall accuracy of the reconstructed point cloud. This can lead to strong deviations in the reconstructed point clouds and the functional geometries calculated from them. Using a compressed air actuator, the measuring system can be protected from the heat effects of the measuring object, as well as from dirt. Furthermore, the effect of the inhomogeneous refractive index field can be significantly reduced. With this approach the in-situ wear measurement at highly stressed regions using the example of the mandrel radius and the flash radius will be demonstrated. These functional elements are of particular interest, as the thermal stress is high and large material flow takes place. For the wear determination, the functional elements of the tool are examined in detail by fitting geometrical features into the reconstructed point clouds and determining the deviations from a reference geometry. In addition, the measurement data is validated with the aid of a commercially available state-of-the-art measurement system.
KW - Endoscopic Inspection
KW - Fringe Projection
KW - Hot Forging Dies
KW - Wear Monitoring
UR - http://www.scopus.com/inward/record.url?scp=85140469611&partnerID=8YFLogxK
U2 - 10.4028/p-k81788
DO - 10.4028/p-k81788
M3 - Conference contribution
AN - SCOPUS:85140469611
SN - 9783035717594
T3 - Key Engineering Materials
SP - 1211
EP - 1220
BT - Achievements and Trends in Material Forming- Peer-reviewed extended papers selected from the 25th International Conference on Material Forming, ESAFORM 2022
A2 - Vincze, Gabriela
A2 - Barlat, Frédéric
T2 - 25th International Conference on Material Forming, ESAFORM 2022
Y2 - 27 April 2022 through 29 April 2022
ER -