Laser-assisted micro sheet forming

Jens Holtkamp; Arnold Gillner

doi:10.1117/12.786985

15 January 2008 Laser-assisted micro sheet forming

Jens Holtkamp, Arnold Gillner

Proceedings Volume 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies; 69850I (2008) https://doi.org/10.1117/12.786985
Event: Fundamentals of Laser Assisted Micro- and Nanotechnologies, 2007, St. Petersburg, Russian Federation

Abstract

The fast growing market for micro technical products requires parts with increasing complexity. While sheet metal forming enables low cost mass production with short cycle times, it is limited by the maximum degree of deformation and the quality of the cut edge. The technology of warm forming partially eliminates these deficiencies. This operation takes place at elevated temperatures before structural transformation is initiated. It combines characteristic advantages of traditional cold and hot forming processes. Lasers as heat sources provide a high, selective and controllable energy input. The general difficulty of a uniform temperature distribution during the heating process can be reached by using an Axicon which generates an annulus on the sheet metal surface. The temperature of the workpiece, measured by a pyrometer, is tuned by a PI-Controller. A tool incorporating a multistage operation die is used for the manufacturing of up to three parts at the same time. The tool is integrated into a hydraulical press. A gearwheel made of the magnesium alloy AZ31 is chosen as metal demonstrator. The quality of these punched parts could be significantly improved at elevated temperatures

Citation Download Citation

Jens Holtkamp and Arnold Gillner "Laser-assisted micro sheet forming", Proc. SPIE 6985, Fundamentals of Laser Assisted Micro- and Nanotechnologies, 69850I (15 January 2008); https://doi.org/10.1117/12.786985

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