在板料冲压件的螺孔结构中,广泛应用变薄翻边工艺方法。通过变薄翻过,一方面增加了螺纹的接触长度,有利于零件的紧固性能,另一方面在同样螺纹接触长度的情况下,又节省了材料减轻了零件重量。 目前,由于有关变薄翻边孔几何尺寸的比较全面的资料较少,且不同的资料介绍其数据又各不一致,以致形成产品设计之间与 In the sheet metal stamping parts of the screw hole structure, widely used thin flange method. Through the thinning turned over, on the one hand increases the contact length of the thread is conducive to the fastening performance of the parts, on the other hand the same thread contact length, but also saves material and reduce the weight of the parts. At present, due to the fact that there is less comprehensive data on the geometrical dimensions of thinned flanged holes and different data sets introduce inconsistent data, the relationship between product design and