大型薄壁封头具有大径厚比、弱刚性的特点,利用传统旋压加工方法易出现起皱等失稳现象。依据中心约束旋压法的成形缺陷,从能量法及金属塑性变形理论方面提出了多约束旋压新工艺方案,分析表明:多约束多道次配合作用能够增加工件成形的约束能,有效抑制法兰外缘起皱现象,成形件径厚比大,表面光洁度良好。通过逆行工程软件Poly Works进行模型重构,得到实际加工样件母线方向的壁厚数据,其壁厚分布规律表现为两端欠减薄,中间部分过减薄,旋压终端由于约束作用,壁厚增厚明显。正负壁厚偏差比稳定在15%以内,壁厚均匀性良好。 Large thin-walled head with large diameter ratio, the characteristics of weak rigidity, the use of traditional spinning process prone to instability such as wrinkles. According to the forming constraint of the central constrained spinning method, a new multi-constrained spinning process was proposed based on the energy method and the theory of metal plastic deformation. The analysis shows that the multi-constrained multi-pass cooperation can increase the restraining energy of the workpiece forming and the effective restraining method Blue rim wrinkling phenomenon, forming a large diameter and thickness ratio, good surface finish. Through the reconstruction of the model by PolyWorks, a retrograde engineering software, the wall thickness data of the actual machining samples in the direction of the generatrix is ​​obtained. The wall thickness distribution law of the model shows that the thickness is reduced at both ends, the middle part is too thin, the spinning terminal is restrained, Thick thickening obvious. Positive and negative wall thickness deviation is stable at less than 15%, good wall thickness uniformity.