Static compensation for elastic tool and press deformations during deep drawing
Static compensation for elastic tool and press deformations during deep drawing
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拉深过程中弹性工具和压力机变形的静态补偿
DOI：
10.1007/s11740-010-0216-7
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Kriechenbauer
中科院分区：
文献类型：
--
作者：
Großmann;Wiemer;Hardtmann;Penter;Kriechenbauer
尽管当今的拉深工具是通过计算机辅助设计 (CAD)、有限元 (FE) 模拟和计算机辅助制造 (CAM) 进行彻底设计和计算，但将工具投入生产的操作顺序仍然包含手工和不可重复的劳动。特别是，模具定位是经验性的，几乎完全取决于工具制造商的经验。这种绘图工具的微调会消耗大量的时间。在最大限度地减少手动芯片点样方面，存在着减少时间和成本的巨大潜力。本文介绍了用于创建深拉工具的误差补偿方法，这种方法需要较少的手动模具定位来生产高质量的冲压件。在拉深操作的有限元模拟中，通常的做法是假设刚性工具和冲压机属性。模具和冲头设计基于这些简化的事实可能是经验模具定位仍然势在必行的主要原因之一。因此，作者开发了一种方法来补偿工具面在施加的工艺负载下发生的弹性压力和工具变形的影响。作者通过两个例子演示了静态补偿。第一个显示了由不平衡负载引起的滑枕倾斜的静态补偿，这可能源于不对称零件设计和/或偏心安装工具。第二个示例描述了对由局部和整体偏转引起的弹性模具变形的补偿。在任何一种情况下，补偿后的模具面在施加的工艺负载下都会变形为所需的模具面。这项研究工作展示了弹性工具和冲压变形对冲压件最终形状影响的静态补偿的潜力和局限性。
Although today’s deep drawing tools are thoroughly designed and calculated by means of computer-aided design (CAD), finite element (FE) simulation and computer-aided manufacturing (CAM), the sequence of operations to put a tool into production still encompasses manual and irreproducible labor. In particular, the die spotting is empirical and is almost entirely dependent on the toolmaker’s experience. This fine-tuning of the drawing tool consumes a large amount of time. In minimizing manual die spotting, a large potential to decrease time and costs exists. This article presents error compensation methods to create deep drawing tools, which require less manual die spotting in order to produce sound quality stampings. In FE simulations of deep drawing operations, it is general practice to assume rigid tool and press properties. The fact that die and punch design are based on these simplifications might be one of the main causes that empirical die spotting is still imperative. Therefore, the authors developed a methodology to compensate the tool face for effects of elastic press and tool deformations, which occur under applied process load. The authors demonstrate the static compensation with two examples. The first shows the static compensation for ram tilting caused by an unbalanced load, which can originate from asymmetric part design and/or eccentric mounted tools. The second example describes the compensation for elastic die deformation caused by local and global deflections. In either case, the compensated die face, under applied process load, deformed into the desired die face. This research work shows the potential and limits of a static compensation for effects of elastic tool and press deformations on the final shape of the stamping.
通过先进的成形工艺模拟更快地获得健全的零件 – 先进的成形工艺模型，包括成形压力机和工具的弹性效应
影响因子：
2.2
作者：
Großmann;Wiemer;Hardtmann;Penter
通讯作者：
Penter
使用可编程多点缓冲系统冲压大型汽车车身板件的模具试模研究
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
M. Braedel;H. Palaniswamy;H. Hoffmann;T. Altan;M. Golle;B. Griesbach
通讯作者：
B. Griesbach