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中文摘要：
以便提高弄弯的部分的尺寸精确，先进弯曲技术最近被请求。(RSB ) 旋转的段弯曲是一种合适的技术认识到弄弯的部分的高精确。处理参数的效果，也就是方面压力和拉长的力量，在铝侧面 RSB 的尺寸精确上，部分被有限元素方法学习。U 字形的铝侧面 RSB 的数字模拟被执行，并且模拟的有效性被检查。而节失真的弯曲增加的springback back 和弯曲的springback back 与增加拉长的力量减少，U字形的侧面 LY12M 的节失真弄弯的参量的分析表演与增加方面压力分开减少，而且，弄弯的部分的弯曲的一致性清楚地与增加拉长的力量被提高。上面的结果证明 RSB 技术罐头更好改进铝侧面偏好部分的尺寸精确。
英文摘要：
In order to enhance the dimension precision of bent part, advanced bending technologies is requested recently. Rotary stretch bending（RSB） is a suitable technology to realize high precision of bent part. The effect of processing parameters, namely the side pressure and the stretching force, on the dimension precision of aluminium profile RSB part was studied by finite element method. The numerical simulation of the U-shaped aluminium profile RSB was carried out, and the validity of the simulation was checked. Parametric analysis shows that the section distortion of the U-shaped profile LY 12M bent part decreases with the increasing of the side pressure, whereas the springback of curvature increases, and that both of the section distortion and the springback of curvature decrease with the increasing of the stretching force, moreover, the uniformity of curvature of the bent part is clearly enhanced with the increasing of the stretching force. The results above prove that RSB technology can better improve the dimension precision of aluminium profile bent part.
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