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.
作者
贺全智
李辉
赵利鼎
He Quanzhi;Li Hui;Zhao Liding(Department of Mining Engineering,Luliang University,Lyuliang 033000,China)
出处
《锻压技术》
CAS
CSCD
北大核心
2018年第9期108-112,共5页
Forging & Stamping Technology
基金
吕梁学院科研基金项目(ZRON201605)
关键词
多道次变薄拉深
尺寸精度
摩擦系数
实际外径
壁厚偏差
multi-step ironing
dimensional accuracy
friction coefficient
actual outside diameters
wall thickness deviation
