A novel laboratory blanking apparatus for the experimental identification of blanking parameters |
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| Affiliation: | 1. University of Ljubljana, Faculty of Mechanical Engineering, Aškerčeva 6, 1000 Ljubljana, Slovenia;2. Hidria Rotomatika, Spodnja Kanomlja 23, 5281 Idrija, Slovenia;3. Hidria AET, Poljubinj 89a, 5220 Tolmin, Slovenia;1. Hubei Key Laboratory of Advanced Technology of Automotive Components, Wuhan University of Technology, Wuhan 430070, China;2. School of Material Science and Engineering, Wuhuan University of Technology, Wuhan 430070, China;1. School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China;2. Central Iron & Steel Research Institute(CISRI), Beijing 100081, China;1. LAMPA Laboratory (EA 1427), Arts et Métiers ParisTech, 2 Bd du Ronceray, 49000 Angers, France;2. DEVILLE ASC, ZI de Beauregard, 49150 Baugé, France;1. Institute of Metal Forming and Casting, Technical University of Munich, Garching, D-85748 Germany;2. Institute of Electrical Machines, RWTH Aachen University, Aachen, D-52062 Germany |
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| Abstract: | High-quality blanking depends on several blanking parameters that are difficult to investigate with industrial blanking presses. In this research, a novel laboratory blanking apparatus that allows quasi-static and dynamic blanking at different blanking speeds is presented. With a clear focus on the dynamics of the blanking process, the inertial correction of the punch force, the surface velocity and the surface temperature of sheet-metal are researched. In addition, measurements of the punch–die misalignment and the punch–die inclination-angle are discussed. The apparatus is also able to perform a partial penetration of the punch to a selected depth with an accuracy of better than 10 μm. The apparatus was shown to offer us a new insight into the blanking process that can increase our understanding and therefore result in better numerical models and better products. |
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| Keywords: | Blanking apparatus Dynamic blanking Partial blanking Blanking temperature Sheet-metal vibrations |
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