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提出了一种斜壁盒形件的滚动拉深成形新工艺,该工艺利用凸凹模成形辊相对转动,金属板料从成形辊中间穿过,实现斜壁盒形件的滚动拉深成形,能够提高零件的成形效率,易于实现生产自动化。基于MSC.Marc有限元软件对斜壁盒形件的滚动拉深成形过程进行了有限元模拟,分析了斜壁盒形件滚动拉深成形的变形特点,揭示了成形过程中斜壁盒形件的应力、应变和壁厚分布规律。研究表明:滚动拉深工艺能够较好地成形带有一定斜度的盒形件,成形过程中凸模与板料成形部位始终保持线接触,成形接触区两侧金属处于自由状态,金属流动不均匀且补料较困难。局部区域胀形特征明显,缺陷形式主要以破裂为主。
A new technology of rolling and deep drawing forming of inclined box box is put forward. The process makes use of the relative rotation of forming roll of punch and die, and the metal sheet passes through the middle of forming roll to realize rolling and drawing forming of inclined box box. Improve the forming efficiency of parts, easy to achieve production automation. Based on the MSC.Marc finite element software, the finite element simulation of the rolling drawing process of the inclined wall box is carried out. The deformation characteristics of the rolling wall forming of the inclined wall box are analyzed. The stress, strain and wall thickness distribution. The research shows that rolling deep drawing process can well shape the box with a certain slope. During the forming process, the punch and the forming part of the sheet remain in line contact with each other. The metal on both sides of the forming contact zone is in a free state, and the metal flow is not Uniform and more difficult to feed. Local area bulging characteristics are obvious, the main defect form mainly rupture.