%0 Conference Paper %1 Schenek2023-tn %A Schenek, A %A Senn, S %A Liewald, M %B Production at the Leading Edge of Technology %C Cham %D 2023 %E Liewald, Mathias %E Verl, Alexander %E Bauernhansl, Thomas %E Möhring, Hans-Christian %I Springer International Publishing %K imported AS ML SS %P 179--188 %R 10.1007/978-3-031-18318-8_19 %T Numerical and Experimental Investigations to Increase Cutting Surface Quality by an Optimized Punch Design %U https://doi.org/10.1007/978-3-031-18318-8_19 %X Punching is one of the most commonly used production processes in sheet metal working industry. Here, major criterion for the quality of cutting surfaces is a high clean cut proportion. However, the disadvantage of conventional punching processes is that they can only produce clean cut proportions up to 20--50\% of the sheet thickness. Until today, more complex processes such as fine blanking are therefore required for a higher cutting surface quality. The content of this paper is a numerical and experimental investigation for a new tool design called ``concave punch nose design''. The idea of the concave punch nose design is to optimize the cutting edge geometry of conventional punches in order to enlarge clean-cut proportion along the cutting surface despite a process sequence similar to conventional shear cutting. The numerical and experimental investigations presented in this contribution show, that the concave punch nose design increases compressive stresses in the shear-affected zone and therefore significantly raises the cutting surface quality. Compared to conventional punching, concave punch nose design increases clean cut proportions by more than 100\%. %@ 978-3-031-18318-8

@inproceedings{Schenek2023-tn, abstract = {Punching is one of the most commonly used production processes in sheet metal working industry. Here, major criterion for the quality of cutting surfaces is a high clean cut proportion. However, the disadvantage of conventional punching processes is that they can only produce clean cut proportions up to 20--50{\%} of the sheet thickness. Until today, more complex processes such as fine blanking are therefore required for a higher cutting surface quality. The content of this paper is a numerical and experimental investigation for a new tool design called ``concave punch nose design''. The idea of the concave punch nose design is to optimize the cutting edge geometry of conventional punches in order to enlarge clean-cut proportion along the cutting surface despite a process sequence similar to conventional shear cutting. The numerical and experimental investigations presented in this contribution show, that the concave punch nose design increases compressive stresses in the shear-affected zone and therefore significantly raises the cutting surface quality. Compared to conventional punching, concave punch nose design increases clean cut proportions by more than 100{\%}.}, added-at = {2024-07-30T10:55:03.000+0200}, address = {Cham}, author = {Schenek, A and Senn, S and Liewald, M}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2769505427df576fccce68e32f9033477/ifu}, booktitle = {Production at the Leading Edge of Technology}, copyright = {https://www.springernature.com/gp/researchers/text-and-data-mining}, doi = {10.1007/978-3-031-18318-8_19}, editor = {Liewald, Mathias and Verl, Alexander and Bauernhansl, Thomas and M{\"o}hring, Hans-Christian}, interhash = {3b96778cc321a8bd61024c861925f94e}, intrahash = {769505427df576fccce68e32f9033477}, isbn = {978-3-031-18318-8}, keywords = {imported AS ML SS}, pages = {179--188}, publisher = {Springer International Publishing}, timestamp = {2024-07-30T10:55:03.000+0200}, title = {Numerical and Experimental Investigations to Increase Cutting Surface Quality by an Optimized Punch Design}, url = {https://doi.org/10.1007/978-3-031-18318-8_19}, year = 2023 }