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Replication of prismatic microstructures by electromagnetic embossing (2015)

Langstädtler, L.; Schönemann, L.; Bloem, A.; Schenck, C.; Kuhfuß, B.

Proceedings of the 4M/ICOMM2015 International Conference on Micromanufacturing, 31st March-2nd April, 2015, Milano (Italy), ISBN 978-981-09-4609-8, Tagungsband S. 219-222


Electromagnetic forming is a high speed forming process that is already established in the macro world. Due to its advantages like high deformation rate and cheaper tools it is introduced to micro forming. In this research the replication of prismatic optical microstructures is investigated. EN AW-1050A (Al99.5) micro metal sheets with a thickness of 50 μm and 300 μm are electromagnetically micro embossed. The microstructures of the embossing tool are generated by Diamond Micro Chiseling (DMC), a new machining process to generate discontinuous microstructures like miniaturized cube corner retro reflectors and V-shaped grooves with defined endings. For the replication, electromagnetic body forces are used. With this technique, it is possible to successfully replicate triangular cross-section micro V-grooves of 86.6 μm in width and 24.1 μm in depth.