Effective forming strategy for double-sided incremental forming considering in-plane curvature and tool direction

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• 作者：Newell Moser^a ; ¹ ; Zixuan Zhang^a ; ¹ ; Huaqing Ren^a ; Huan Zhang^a ; ^b ; Yi Shi^a ; Ebot E. Ndip-Agbor^a ; Bin Lu^b ; Jun Chen^b ; Kornel F. Ehmann^a ; Jian Cao^a ; ^{jcao@northwestern.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Incremental sheet forming ; Process control ; Toolpath
• 刊名：CIRP Annals - Manufacturing Technology
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：65
• 期：1
• 页码：265-268
• 全文大小：1530 K

文摘

The success of a toolpath in double-sided incremental forming (DSIF) is strongly related to the specified tool gap. It is hypothesized in this work that maintained contact between tools and the sheet can improve the distribution of sheet thickness and hence, improve material formability and prevent premature fracture. Simulation and experimental studies reveal that thickness prediction models solely dependent on the local wall angle are inadequate for general part geometries. A ‘Shamrock’ geometry is proposed leading to the development of a novel improved thickness correction model that incorporates wall angle, in-plane curvature, and tool direction.