Project Status: finished
Laser bending, a flexible forming process, can be used for the correction of warpage. Varying properties of semi-finished products and the lack of forming tool technology, however, lead to an insufficient reproducibility. To antagonise this problem a closed loop control system consisting of a pre-processor and the actual closed loop control system is developed. The pre-processor transforms the nominal geometry into a suitable format and creates several forming stages which incrementally transform the actual geometry into the target geometry. Within the closed loop the workpiece is digitised by a 3D sensor. Now several features are extracted to realise the actual/nominal value comparison. The use of form features speeds up the geometrical data processing. After that the NC-Code for the warpage correction is gen-erated automatically.
Hagenah, H.; Geißdörfer, S.:
System for the automatic correction of sheet metal bending angles by means of laser beam forming.
In: Juster, N.; Rosochowski, A (Edt.): The 9th International Conference on Metal Forming ESAFORM, (2006), Krakow, Polen: Publishing House Akapit, pp. 235-238
Geiger, M.; Hagenah, H.; Hutterer, A.:
Task Specific Registration Algorithms Within the Closed Loop Control of Laser Forming Processes.
In: Production Engineering. Annals of the German Academic Society for Production Engineering WGP, XII(2005)2, pp. 125-130