Abstract
The laser projector based on the laser galvanometer scanning system enables the projection of CAD-based laser images onto geometrical objects. Furthermore, the system can perform a scan of components in order to control proper positioning (e.g., welded structures). We decided to conduct research aimed at determining the suitability of such systems for length measurements and assess their accuracy. These systems are commonly calibrated with the use of flat calibration boards, although their capability of projecting and scanning 3D objects. For this reason, a new method based on ISO 10360 has been proposed. Analysis of the system’s ability to perform length measurements, selection of a reference standard, and the tested device accuracy were the main objectives of the study. A ball-bar with a nominal length of 3000 mm was chosen as a reference standard. Positions of the reference element in the workspace were determined, and three series of five measured deviations were performed in each setting. The obtained values of measurement errors prove that it is possible to use ball-bar standards to assess the accuracy of the described systems, which is defined by the equation MPE(E0) = ±0.5 mm. The proposed method could be adapted to perform more complex analyzes in this area.
Highlights
IntroductionAcademic Editors: Frank Walther and Valentino Paolo Berardi
We found no publications on the use of CMM-typical standards for the accuracy testing of galvanometer laser scanners
Scanning Systems are capable of performing simple coordinate measurements refer to a CAD model
Summary
Academic Editors: Frank Walther and Valentino Paolo Berardi. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Performing measurements with the use of laser technology has been known for many years. Laser interferometers have been used in the field of metrology, mainly as systems for setting and checking coordinate measuring machines. The rapid advancement of computers and laser techniques has resulted in the development of modern distance sensors, which allowed for the use of such technology to perform scans of 3D objects in various industries. It was possible to develop Terrestrial Laser
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