Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement
As incrementally formed sheets show large geometric deviations resulting from the deflection of the forming tool, an in-process measurement of the tool tip position is required. In order to cover a measuring volume of 2.0 m × 1.0 m × 0.2 m and to achieve measuring uncertainties of less than 50 µm, a...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-10-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/23/20/8593 |
| _version_ | 1827719863665164288 |
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| author | Marina Terlau Axel von Freyberg Dirk Stöbener Andreas Fischer |
| author_facet | Marina Terlau Axel von Freyberg Dirk Stöbener Andreas Fischer |
| author_sort | Marina Terlau |
| collection | DOAJ |
| description | As incrementally formed sheets show large geometric deviations resulting from the deflection of the forming tool, an in-process measurement of the tool tip position is required. In order to cover a measuring volume of 2.0 m × 1.0 m × 0.2 m and to achieve measuring uncertainties of less than 50 µm, a multi-sensor system based on triangulation is realized. Each shadow imaging sensor in the multi-sensor system evaluates the direction vector to an LED attached to the tool, and the three-dimensional position of the LED is then determined from the combination of two sensors. Experimental results show that the angle of view from the sensor to the LED limits both the measurement range and the measurement uncertainty. The measurement uncertainty is dominated by systematic deviations, but these can be compensated, so that the measurement uncertainty required for measuring the tool tip position in the ISF is achieved. |
| first_indexed | 2024-03-10T20:53:41Z |
| format | Article |
| id | doaj.art-70806c0e071f49db9467e8c1047bb7c9 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T20:53:41Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-70806c0e071f49db9467e8c1047bb7c92023-11-19T18:05:18ZengMDPI AGSensors1424-82202023-10-012320859310.3390/s23208593Shadow-Imaging-Based Triangulation Approach for Tool Deflection MeasurementMarina Terlau0Axel von Freyberg1Dirk Stöbener2Andreas Fischer3University of Bremen, Bremen Institute for Metrology, Automation and Quality Science, Linzer Straße 13, D-28359 Bremen, GermanyUniversity of Bremen, Bremen Institute for Metrology, Automation and Quality Science, Linzer Straße 13, D-28359 Bremen, GermanyUniversity of Bremen, Bremen Institute for Metrology, Automation and Quality Science, Linzer Straße 13, D-28359 Bremen, GermanyUniversity of Bremen, Bremen Institute for Metrology, Automation and Quality Science, Linzer Straße 13, D-28359 Bremen, GermanyAs incrementally formed sheets show large geometric deviations resulting from the deflection of the forming tool, an in-process measurement of the tool tip position is required. In order to cover a measuring volume of 2.0 m × 1.0 m × 0.2 m and to achieve measuring uncertainties of less than 50 µm, a multi-sensor system based on triangulation is realized. Each shadow imaging sensor in the multi-sensor system evaluates the direction vector to an LED attached to the tool, and the three-dimensional position of the LED is then determined from the combination of two sensors. Experimental results show that the angle of view from the sensor to the LED limits both the measurement range and the measurement uncertainty. The measurement uncertainty is dominated by systematic deviations, but these can be compensated, so that the measurement uncertainty required for measuring the tool tip position in the ISF is achieved.https://www.mdpi.com/1424-8220/23/20/8593incremental sheet formingtriangulationshadow imagingthree-dimensional position measurement |
| spellingShingle | Marina Terlau Axel von Freyberg Dirk Stöbener Andreas Fischer Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement Sensors incremental sheet forming triangulation shadow imaging three-dimensional position measurement |
| title | Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement |
| title_full | Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement |
| title_fullStr | Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement |
| title_full_unstemmed | Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement |
| title_short | Shadow-Imaging-Based Triangulation Approach for Tool Deflection Measurement |
| title_sort | shadow imaging based triangulation approach for tool deflection measurement |
| topic | incremental sheet forming triangulation shadow imaging three-dimensional position measurement |
| url | https://www.mdpi.com/1424-8220/23/20/8593 |
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