锻压技术

基于Simufact的多道次变薄拉深尺寸精度研究

英文标题：Research on dimensional accuracy of multi-step ironing based on Simufact

作者：贺全智李辉赵利鼎

单位：吕梁学院

分类号：TG376

出版年,卷(期):页码：2018,43(9):108-112

摘要：

为了探究多道次变薄拉深中摩擦系数对工件成形后尺寸精度的影响，通过对多道次变薄拉深过程进行有限元仿真，在Simufact.forming有限元仿真软件中选取C15-c低碳钢为试验材料，以摩擦系数为试验参数，进行3道次变薄拉深数值模拟。以3道次变薄拉深成形后筒形件的实际外径与壁厚偏差为评价指标，探究多道次变薄拉深中摩擦系数对工件成形质量的影响。结果表明：经多道次变薄拉深后，工件的实际外径与壁厚皆小于理论值，随着摩擦系数的增大，工件外径呈现先增大后减小的趋势，壁厚偏差呈现先减小后增大的趋势，当摩擦系数取0.12时，工件实际外径最接近理论外径，壁厚偏差最小。

In order to explore the influence of friction coefficient on the dimensional accuracy of workpiece in multi-step ironing, the finite element simulation of multi-step ironing process was carried out. Then, in the finite element simulation software Simufact.forming, low carbon steel C15-c was selected as the test material, and the friction coefficient was taken as the test parameter to carry out three-step ironing numerical simulation. Furthermore, the influence of friction coefficient on the forming quality of workpiece in multi-step ironing was studied by taking the actual outside diameter and wall thickness deviation of cylindrical part after three-step ironing as the evaluation indexes. The results show that the actual outside diameter and wall thickness of workpiece are smaller than theoretical values after multi-step ironing. With the increasing of friction coefficient, the outside diameter of workpiece increases first and then decreases, while the wall thickness deviation decreases first and then increases. When the friction coefficient is 0.12, the actual outside diameter of workpiece is the closest to theoretical outside diameter, and the wall thickness deviation of workpiece is the smallest.

基金项目：

吕梁学院科研基金项目（ZRON201605）

贺全智（1964-），男，学生，副教授 E-mail：djq1652@163.com

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