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STUDY OF CONTACT AND NON-CONTACT MEASUREMENT TECHNIQUES APPLIED TO REVERSE ENGINEERING OF COMPLEX FREEFORM PARTS

Abstract : This work addresses the problem concerning the reverse engineering of physical parts having complex freeform surfaces, starting from the shape measurement, data processing and part machining. The study was carried out with a small model of a sports car in scale 1:18. The model was measured using a Coordinate Measuring Arm (CMA) with contact probe and a three-dimensional laser scanner. Data was processed using a Computer-Aided Design (CAD) software and Non-Uniform Rational B-Splines (NURBS) curves and surfaces were fitted. The generated CAD model was adopted as reference to create a Computer-Aided Manufacturing (CAM) program for the reconstruction of a prototype of the original part. Aluminum and wood were used as materials to produce the prototypes in a numerically controlled (NC) machining center. The produced part was measured following the same methodology initially applied with original model and a comparison of produced and original model was carried out. The prototypes obtained by different techniques of measurement, non-contact (laser scanner) and contact (CMA), were also compared to determine the most efficient method concerning the accuracy, repeatability and costs. It was found that both measurement techniques are complementary and fusion of data obtained would be desirable in order to increase the accuracy and reduce the cost.
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https://hal.archives-ouvertes.fr/hal-01094272
Contributor : Nabil Anwer Connect in order to contact the contributor
Submitted on : Friday, December 12, 2014 - 2:10:00 AM
Last modification on : Monday, February 15, 2021 - 10:48:15 AM
Long-term archiving on: : Saturday, April 15, 2017 - 8:10:32 AM

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  • HAL Id : hal-01094272, version 1

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Antonio Piratelli-Filho, Pedro Henrique Jobim Souza, Rosenda Valdés Arencibia, Nabil Anwer. STUDY OF CONTACT AND NON-CONTACT MEASUREMENT TECHNIQUES APPLIED TO REVERSE ENGINEERING OF COMPLEX FREEFORM PARTS. International Journal of Mechanical Engineering and Automation, Ethan Publishing Company, 2014, pp.10. ⟨hal-01094272⟩

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