The thesis presents a review of the literature on sheet metal forming process, describing the technology and theory behind it. Elastic springback effect that is causing many problems when we want to achieve desired product shape is explained. Furthermore, factors that are influencing the springback effect are analysed and presented. The main focus is on the bending speed effect on springback. In addition, eccentric press and Amsler press are presented and described. Several different experiments were conducted during this analysis. We tested five materials at two predefined bending speeds. Materials used in the experiments were: AW-1050A, AW-5754, DC01, AISI 304 and S355. After tests were conducted, we compared springback angles between materials at different speed. We found out that material DC01 had the smallest springback effect at higher bending speed and material AW-1050A had the biggest springback effect. Materials with higher yield strength that are not Aluminum alloys are experiencing bigger springback effect (tests were conducted on Amsler press). On the other hand, higher hardening coefficient results in lower springback effect. With some experiments we didn't receive sufficient results, therefore we couldn't get to any conclusion.
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