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New trends in sheet metal forming analysis and optimization trough the use of optical measurement technology to control springback

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Abstract

The use of optical measurement equipment and software based on photogrammetry is becoming more affordable and is increasing their reliability in presenting results on surfaces topography as well as strain distribution. The question is, how feasible can their support be to the process/product development engineer in the choice of the right auto body-in-white (BIW) component design; how can they influence blank and tool geometries, process parameters and moreover the right material selection, in order to reduce the springback of such materials on drawing, reaching the required quality standards for the part. This paper describes some industrial cases on how these new techniques can be applied to lay out industrial deep drawing processes, accomplished by the use of optical measurement, improving design and process issues.

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Abbreviations

B:

Image plane

C:

Principle distance

R :

Rotation Matrix

dx, dy :

Lens distortions

x,y:

Image coordinate system

xH :

Image coordinates of the principle point

xP ,yP :

Image coordinate of projected object point P

X,Y,Z:

Object coordinate system

X*,Y*,Z*:

Support coordinate systems

XO,YO,ZO :

Object coordinates of the projection centre O

XP,YP,ZP :

Object coordinates of the observed object point P

X P ,*,Y P ,*,Z P * :

Support coordinates of the object point P

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Acknowledgements

The authors gratefully acknowledge Mr. Vicente Massaroti (ROBTEC-Brazil/GOM GmbH) and Fiat SPA for the support.

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Authors and Affiliations

  1. Laboratory of Manufacturing Engineering, Department of Mechatronics & Mechanical Systems Engineering, Escola Politecnica—University of Sao Paulo, Av. Prof. Mello Moraes, 2231, CEP 05508.970, Sao Paulo, SP, Brazil

    G. L. Damoulis, E. Gomes & G. F. Batalha

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  1. G. L. Damoulis
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  2. E. Gomes
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  3. G. F. Batalha
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Correspondence to G. L. Damoulis.

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Damoulis, G.L., Gomes, E. & Batalha, G.F. New trends in sheet metal forming analysis and optimization trough the use of optical measurement technology to control springback. Int J Mater Form 3, 29–39 (2010). https://doi.org/10.1007/s12289-009-0413-0

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