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发明公开
CN105478619A 高强钣金件拉延成型工艺中消除额外噪音的方法 无效 - 撤回

高强钣金件拉延成型工艺中消除额外噪音的方法
摘要：
本发明公开了一种高强钣金件拉延成型工艺中消除额外噪音的方法，该钣金件通过拉延工艺进行翻边，翻边形成的R角小于100o，且钣金件厚度大于5mm。在通过拉延工艺对钣金件进行加工前，先在钣金件与翻边对应侧的边缘预先加工出金属流动导向缺口，以引导钣金件在拉延加工时金属朝该缺口方向流动，然后再通过拉延工艺加工成型。本方法可以提高钣金件材料加工过程中的流动性，材料在加工时更容易向缺口方向流动，流动阻力减小，消除因为流动受阻产生的噪音。
摘要（英）：

The invention discloses a method for eliminating extra noises in a high-strength sheet metal part drawing forming process. The method comprises the following steps: flanging is carried out on a sheet metal part through a drawing process, wherein an R angle formed by flanging is smaller than 100 degrees, and in addition, the thickness of the sheet metal part is larger than 5 mm; and before the sheet metal part is processed through the drawing process, a metal flowing guide notch is processed in the edge, on the side corresponding to flanging, of the sheet metal part in advance so as to guide metal to flow towards the direction of the notch when drawing processing is carried out on the sheet metal part, and then processing forming is carried out through the drawing process. With the adoption of the method, the mobility of a sheet metal part material in the processing process can be improved, the material more easily flows towards the direction of the notch during processing, the flowing resistance is reduced, and the noises caused by blocked flowing are eliminated.

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