Original scientific paper

Part dimensional errors in free upsetting due to the elastic springback

Mladomir Milutinović orcid.org/0000-0002-2023-1215 ; Faculty of technical sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Dragiša Vilotić ; Faculty of technical sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Tomaž Pepelnjak ; Faculty of Mechanical Engineering, Aškerčeva 6, 1000 Ljubljana, Slovenia

Abstract

Elastic springback of workpiece material which occurs in any forming process has been recognized as one of most relevant factors regarding part dimensional accuracy. Therefore, in order to manufacture component in accordance with the geometrical specifications engineers must have a good understanding of this phenomenon and take it into account during the design tool and forming process. Unfortunately, this knowledge is often insufficient and therefore the prediction of elastic springback is sometimes a very tough task. The paper presents a general approach for the calculation of elastic recovery. Given analytical equations can be applied for different forming processes under the condition that values of the principal stresses at the very end of forming process are known. By using this approach elastic strains and amplitude of elastic springback of workpiece in case of free upsetting of cylindrical billet were calculated. Obtained results were verified by FEM analysis.

Keywords

dimensional accuracy; elastic springback; free upsetting

Hrčak ID:

116585

URI

https://hrcak.srce.hr/116585

Publication date:

21.2.2014.

Article data in other languages: croatian

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