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Overforming straight flange wiper bending operations in metal stampings through inside bend radius and height configuration on punches.

机译:通过冲压机的内部弯曲半径和高度配置,对金属冲压件中的直法兰刮水器弯曲操作进行改进。

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摘要

Springback in metal stamping bending has been a problem for metal stamping manufacturers. A progressive die was built and run on a mechanical press through bending on a 304 Stainless Steel material to see if this radius and height are a factor to the springback value.; This experiment attempted to overbend by using radius ratios of 1.5 and 2.0 radius ratio of the traditional method with 10 different heights to see the effect on the response of the angle being how far it is from 90 degrees. For validation purposes the radius ratios of 1.75 and 2.25 with three different heights were used to see if the tendency shown is accurate. The experiment found that the bigger the radius and the lower the height the closer the parts would reach the target bend of 90 degrees. The experiment did not produce the perfect 90 degree bend but it was improved from a 1.478 degree angle (average) by traditional methods to a .6049 degree angle (average) with the 2.25 radius ratio and the smaller height, by overbending to accommodate for that springback. By seeing the tendencies shown in the experiment, with an even bigger radius and a smaller height, the target should be reached.; This is beneficial because a low cost tool will exist since this geometry is already ground into the punches that will be performing the wiper bending in the progressive metal stamping industry, the only difference would be the size of the radius.
机译:金属冲压弯曲中的回弹一直是金属冲压制造商的问题。制作了一个渐进模,并在机械压力机上通过在304不锈钢材料上弯曲来观察该半径和高度是否是回弹值的因素。该实验尝试通过使用传统方法的半径比为1.5和2.0的半径比(具有10种不同的高度)来过度弯曲,以查看角度响应距离90度有多远的影响。为了进行验证,使用三个不同高度的半径比1.75和2.25来查看所示趋势是否准确。实验发现,半径越大,高度越低,零件越接近90度目标弯曲。该实验无法产生理想的90度弯曲,但通过传统方法将其从传统方法的1.478度角(平均)提高到具有2.25半径比和较小高度的0.649度角(平均),以适应这种情况。弹回。通过观察实验中显示的趋势,即更大的半径和更小的高度,应该可以达到目标。这是有利的,因为将存在一种低成本的工具,因为这种几何形状已经被磨入冲压机中,该冲压机将在渐进式金属冲压行业中进行刮水器弯曲,唯一的区别是半径的大小。

著录项

  • 作者

    Robles, Salvador.;

  • 作者单位

    The University of Texas at El Paso.;

  • 授予单位 The University of Texas at El Paso.;
  • 学科 Engineering Mechanical.
  • 学位 M.S.
  • 年度 2004
  • 页码 91 p.
  • 总页数 91
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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