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Proceedings Paper

3D shape measurements with a single interferometric sensor for in-situ lathe monitoring
Author(s): R. Kuschmierz; Y. Huang; J. Czarske; S. Metschke; F. Löffler; A. Fischer
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Paper Abstract

Temperature drifts, tool deterioration, unknown vibrations as well as spindle play are major effects which decrease the achievable precision of computerized numerically controlled (CNC) lathes and lead to shape deviations between the processed work pieces. Since currently no measurement system exist for fast, precise and in-situ 3d shape monitoring with keyhole access, much effort has to be made to simulate and compensate these effects. Therefore we introduce an optical interferometric sensor for absolute 3d shape measurements, which was integrated into a working lathe. According to the spindle rotational speed, a measurement rate of 2,500 Hz was achieved. In-situ absolute shape, surface profile and vibration measurements are presented. While thermal drifts of the sensor led to errors of several mµm for the absolute shape, reference measurements with a coordinate machine show, that the surface profile could be measured with an uncertainty below one micron. Additionally, the spindle play of 0.8 µm was measured with the sensor.

Paper Details

Date Published: 21 June 2015
PDF: 7 pages
Proc. SPIE 9525, Optical Measurement Systems for Industrial Inspection IX, 95251U (21 June 2015); doi: 10.1117/12.2184813
Show Author Affiliations
R. Kuschmierz, Technische Univ. Dresden (Germany)
Y. Huang, Technische Univ. Dresden (Germany)
J. Czarske, Technische Univ. Dresden (Germany)
S. Metschke, Physikalisch-Technische Bundesanstalt (Germany)
F. Löffler, Physikalisch-Technische Bundesanstalt (Germany)
A. Fischer, Technische Univ. Dresden (Germany)


Published in SPIE Proceedings Vol. 9525:
Optical Measurement Systems for Industrial Inspection IX
Peter Lehmann; Wolfgang Osten; Armando Albertazzi Gonçalves, Editor(s)

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