In-process shape and roundness measurements at turning machines using a novel laser Doppler profile sensor

Thorsten Pfister; Lars Buettner; Juergen Czarske

doi:10.1117/12.611600

14 February 2005 In-process shape and roundness measurements at turning machines using a novel laser Doppler profile sensor

Thorsten Pfister, Lars Buettner, Juergen Czarske

Author Affiliations +

Proceedings Volume 5776, Eighth International Symposium on Laser Metrology; (2005) https://doi.org/10.1117/12.611600
Event: Eighth International Conference on Laser Metrology, 2005, Merida, Mexico

Abstract

We have investigated the application of a laser Doppler profile sensor for in-process shape and roundness measurements at turning machines. This sensor is an extension of a conventional laser Doppler velocimeter (LDV), where two interference fringe systems with contrary fringe spacing gradients are generated inside the same measuring volume using wavelength division multiplexing. Scattering objects passing the measuring volume generate scattered light signals with two different Doppler frequencies, from which the velocity as well as the position of the objects can be determined via a proper calibration function. Hence, the radius and the tangential velocity and, thus, the shape of rotating work pieces and components, e.g. turbine blades or turning parts, can be measured absolutely and with only one single sensor. Two-dimensional and three-dimensional measurements of shape, excentricity, and roundness on quickly rotating cylinders inside a turning machine are presented. The results are compared with tactile measurements conducted with a coordinate measuring machine.

Citation Download Citation

Thorsten Pfister, Lars Buettner, and Juergen Czarske "In-process shape and roundness measurements at turning machines using a novel laser Doppler profile sensor", Proc. SPIE 5776, Eighth International Symposium on Laser Metrology, (14 February 2005); https://doi.org/10.1117/12.611600

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