Title: Evaluating the capability of laser scanning to measure an automotive artefact: a comparison study of touch trigger probe and laser-scanning

Authors: Ercihan Kiraci; Glen A. Turley; Alex Attridge; Alan Olifent; Mark A. Williams

Addresses: Warwick Manufacturing Group, The University of Warwick, Coventry, CV4 7AL, UK ' Warwick Manufacturing Group, The University of Warwick, Coventry, CV4 7AL, UK ' Warwick Manufacturing Group, The University of Warwick, Coventry, CV4 7AL, UK ' Advanced Manufacturing Engineering, Jaguar Land-Rover Ltd, Birmingham, B35 7RA, UK ' Warwick Manufacturing Group, The University of Warwick, Coventry, CV4 7AL, UK

Abstract: In the automotive industry dimensional quality control is an important part of the production process, often carried out using coordinate measuring machines (CMMs). However, CMMs used in conjunction with touch probes have a relatively low measurement speed. There is also a close link between the cost of measurement and the number of discrete points captured, leading to a trade-off between the number of points that can be measured and the measurement time. Laser scanners offer a faster alternative to touch probe measurement, but have certain limitations. A number of studies have considered the accuracy of laser scanning using small artefacts; however, little work has been done on the verification of on-CMM laser scanning systems for large volume, industry-relevant measurement applications. In this research, a nominal representation of a vehicle body was used and 104 standard features were measured. The results show that the laser scanning sensor and CMM used in this study would, for the majority of measurements, provide a level of accuracy and repeatability better than which is typically required by automotive manufacturers for body shell quality inspection applications.

Keywords: coordinate measuring machines; CMMs; measurement system assessment; laser scanning; touch-trigger probes; automotive artefacts; automobile industry; dimensional quality control; automotive manufacturing; vehicle body shell inspection.

DOI: 10.1504/IJPQM.2016.077776

International Journal of Productivity and Quality Management, 2016 Vol.18 No.4, pp.440 - 455

Available online: 15 Jul 2016 *

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