%0 Conference Paper %1 1742-6596-1063-1-012181 %A Senn, S %A Liewald, M %B Journal of Physics: Conference Series %D 2018 %K imported from:jmueller test %N 1 %P 12181 %T Numerical investigation of a new sheet metal shear cutting tool design to increase the part quality by superposed compression stress %U http://stacks.iop.org/1742-6596/1063/i=1/a=012181 %V 1063 %X Nowadays, a major criterion for the quality of shear cut workpieces is characterised by a smooth final cutting surface. Normally, this surface only can be manufactured by using fine cutting or trimming technology. Major disadvantage of these processes is the complex tooling design caused by a double-acting press and corresponding tool layout. Content of this numerical study is to investigate the impact of a new sheet metal cutting tool design to increase the clean-cut portion in conventional shear cutting of high strength steel (DP600). Using FEA-Software DEFORM 2D, the models of fine cutting, conventional cutting and cutting with new tool design were mapped by comparing cutting surface results and stress distribution in the shearing zone. The main criterion of the optimization of tool design focuses on an enlarged clean-cut area along the cutting surface compared to conventional shear cutting. This study is based on the design of experiments (DOE) using Latin-Hypercube-Variation of the factors cutting clearance, die radius, punch radius, punch velocity, part holder force and special geometry designs to identify and to optimise new tool geometry. New tool design shows a significant increase of clear-cut surface up to 73% compared to conventional cutting surfaces disclosing 35% when using tools according to standard design rules. Using this new punch design, it is possible to shear high strength steels revealing a noticeably performed shearing surface quality.

@inproceedings{1742-6596-1063-1-012181, abstract = {Nowadays, a major criterion for the quality of shear cut workpieces is characterised by a smooth final cutting surface. Normally, this surface only can be manufactured by using fine cutting or trimming technology. Major disadvantage of these processes is the complex tooling design caused by a double-acting press and corresponding tool layout. Content of this numerical study is to investigate the impact of a new sheet metal cutting tool design to increase the clean-cut portion in conventional shear cutting of high strength steel (DP600). Using FEA-Software DEFORM 2D, the models of fine cutting, conventional cutting and cutting with new tool design were mapped by comparing cutting surface results and stress distribution in the shearing zone. The main criterion of the optimization of tool design focuses on an enlarged clean-cut area along the cutting surface compared to conventional shear cutting. This study is based on the design of experiments (DOE) using Latin-Hypercube-Variation of the factors cutting clearance, die radius, punch radius, punch velocity, part holder force and special geometry designs to identify and to optimise new tool geometry. New tool design shows a significant increase of clear-cut surface up to 73% compared to conventional cutting surfaces disclosing 35% when using tools according to standard design rules. Using this new punch design, it is possible to shear high strength steels revealing a noticeably performed shearing surface quality.}, added-at = {2022-03-04T14:47:12.000+0100}, author = {Senn, S and Liewald, M}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/250011ecc6747f41e47a578b83f5b47f6/schulung}, booktitle = {Journal of Physics: Conference Series}, interhash = {e232e7c61b643956c2fd7ddd8933247d}, intrahash = {50011ecc6747f41e47a578b83f5b47f6}, keywords = {imported from:jmueller test}, number = 1, pages = 12181, timestamp = {2022-03-04T13:47:12.000+0100}, title = {Numerical investigation of a new sheet metal shear cutting tool design to increase the part quality by superposed compression stress}, url = {http://stacks.iop.org/1742-6596/1063/i=1/a=012181}, volume = 1063, year = 2018 }