Residual Stress In Sheet Metal Parts Made By Incremental Forming Process
Residual Stress In Sheet Metal Parts Made By Incremental Forming Process
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DOI：
10.1063/1.2740904
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发表时间：
2007-05
期刊：
影响因子：
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通讯作者：
S. Tanaka;Tamotsu Nakamura;K. Hayakawa;Hideo Nakamura;K. Motomura
中科院分区：
文献类型：
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作者：
S. Tanaka;Tamotsu Nakamura;K. Hayakawa;Hideo Nakamura;K. Motomura
板料渐进成形是一种新型的柔性成形工艺，它采用数控成形触针，不需要使用昂贵的模具。我们已经将渐进成形工艺应用于牙科修复体。然而，这一新的进程带来了困难的问题。移除增量成形钣金零件的外部后，内部零件会变形。本文研究了金属板料增量正向拉伸成形过程中的残余应力。对实体单元进行了数值模拟。当刚性小球以一定的垂直进给量在金属薄板上滑动时，薄板上层产生拉应力，下层产生压应力。然后，当外部部分被移除时，整个板的合成力矩会导致负回弹。本文对这一行为进行了系统的研究。所考虑的参数包括刀具半径和垂直刀具进给速率。The tip radius o.
Incremental sheet metal forming, which uses a CNC forming stylus, is new flexible forming process not requiring the use of any expensive dies. We have applied the incremental forming process to dental prosthesis. This new process, however, posed difficult problems. After removing the outer portion of the incremental formed sheet metal part, the inner part is distorted. In this paper, the residual stress in the sheet metal part obtained by incremental forward stretch forming operations has been examined. Numerical simulations were conducted for solid elements. When small rigid ball slides on the metal sheet with a certain vertical feed, tension residual stress is produced in the upper layer of the sheet and compression stress in the lower. Then, the resultant moments throughout the sheet cause negative spring‐back when the outer portion is removed. A systematic study of the behavior was conducted in this paper. Parameters considered included the tool radius and the vertical tool feed rate. The tip radius o...