Abstract
Bending of sheet metal by laser-induced thermal stresses (laser bending) can be used for rapid prototyping and other bending tasks that demand a high flexibility of the process. Experimental investigations on laser bending in the range of the temperature gradient mechanism showed an acceptable reproducibility of the bending angle and the bending radius for a wide range of bending actions. A comparison of different irradiation strategies enabled an analysis of the efficiency of the process. In order to realise a specific bending angle a closed loop system was built, making precision bending to within an accuracy of ± 0.2° possible. The basis of the system consists of different strategies for the calculation of the single irradiation steps which are based on theoretical considerations concerning the working accuracy.
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