锻压技术

基于数值模拟的汽车冲压模具轻量化研究

英文标题：Research on lightweight of automobile stamping die based on numerical simulation

作者：王辉刘莉滋王海宝周杰卓芳

单位：1.重庆三峡学院机械工程学院重庆404130 2.重庆市轻合金材料与加工工程技术研究中心重庆 404130 3.重庆大学材料科学与工程学院重庆 400044

分类号：TG386

出版年,卷(期):页码：2019,44(5):116-120

摘要：

针对汽车覆盖件铸造基体的冲压模具，研究了汽车冲压模具轻量化优化方法。以汽车后地板为研究对象，借助数值模拟软件,对拉延成形工序进行数值模拟，得到模具成形过程所受载荷。将分析得到的凸模最大载荷映射到划分网格的模具型面上，建立静力分析有限元模型，得到原模具的最大变形位移为0.0324 mm。采用汽车冲压模具轻量化优化方法，对后地板模具的凸模进行结构优化，得到优化后凸模的质量为2772 kg，优化后的模具最大变形位移为0.0297 mm。与原模具相比，优化后模具质量降低20%，最大变形位移减小。数值模拟结果表明，本方法在保证模具刚度的前提下，可以有效地降低模具的质量。

For the stamping die of casting base for automobile cover part, the lightweight optimization method of automobile stamping die was studied by numerical simulation. Taking the automobile rear floor as the research object, the drawing process was simulated by numerical simulation software, and the load in the drawing process was obtained. Then, the maximum load of punch was mapped to the die surface divided by the meshes, the finite element model with the static analysis was established, and the maximum deformation displacement of original punch was 0.0324 mm. Furthermore, the structure of the punch was optimized according to the lightweight optimization method, the weight of the optimized punch was 2772 kg, and the maximum deformation displacement was 0.0297 mm. Compared with the original punch, the weight of punch is reduced by 20% and the maximum deformation displacement is reduced after optimization. The numerical simulation results show that the method can effectively reduce the weight of die on the premise of ensuring the rigidity of die.

基金项目：

重庆市教委科学技术研究项目（KJQN201801228）；重庆市高校工程研究中心基金（2019yjzx0101）

作者简介：王辉(1989-)，男，博士，讲师 Email：wanghui@sanxiau.edu.cn

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