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首页> 外文会议>The 2001 North American Manufacturing Research Conference (NAMRC), May 22-25, 2001, Gainesville, Florida >ENHANCEMENT OF SHEET METAL FORMABILITY VIA LOCAL ADAPTIVE CONTROLLERS
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ENHANCEMENT OF SHEET METAL FORMABILITY VIA LOCAL ADAPTIVE CONTROLLERS

机译：通过局部自适应控制器增强金属板的塑性

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摘要

Tailor welded blanks (TWBs) offer an excellent opportunity to reduce manufacturing costs, decrease vehicle weight, and improve the quality of sheet metal stampings. However, tearing near the weld seam and wrinkling in the die addendum often occurs when a traditional forming process is used to fabricate this type of blank. Cao and Kinsey (1999) proposed a modification to the deep drawing process where a segmented die with local adaptive controllers clamps adjacent to the weld line during the forming process thereby increasing the material draw-in of the thicker and/or stronger material from under the binder ring. This in turn reduces the strain in the weaker and/or thinner material near the weld seam and thus alleviates the potential of tearing failure. In this paper, details are given for the experimental implementation of the advanced forming process on a non-symmetric test panel. Notable improvements were obtained compared to a traditional forming process. Also, a systematic approach for determining the local adaptive controller locations is proposed and verified as being effective through the experiments.
机译：定制焊接毛坯（TWB）为降低制造成本，减轻车辆重量并提高钣金冲压件的质量提供了绝佳的机会。但是，当使用传统的成型工艺来制造这种类型的毛坯时，经常会发生焊缝附近的撕裂和模具齿顶的起皱。 Cao和Kinsey（1999）提出了对深冲工艺的一种改进，其中在成型过程中，带有局部自适应控制器的分段模具在焊接线附近夹紧了焊缝，从而增加了较厚和/或更坚固的材料从材料下方的材料引入。活页夹环。这继而减小了在焊缝附近的较弱和/或更薄的材料中的应变，从而减轻了撕裂失败的可能性。在本文中，详细介绍了在非对称测试板上进行高级成型过程的实验实现。与传统的成型工艺相比，获得了显着的改进。此外，提出了一种确定本地自适应控制器位置的系统方法，并通过实验验证了该方法的有效性。

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