锻压技术

多道次变薄拉深速度对筒形件尺寸精度的影响

英文标题：Influence of multipass ironing speed on dimension accuracy of cylindrical parts

作者：宋要斌李辉赵登峰

单位：吕梁学院

分类号：TG376

出版年,卷(期):页码：2018,43(7):165-169

摘要：

多道次变薄拉深过程中，拉深速度对整个筒形件的成形质量有着重要影响。为了探究多道次变薄拉深时拉深速度对工件成形后尺寸精度的影响，针对多道次变薄拉深过程中不同的拉深速度，采用有限元数值模拟的方法进行研究，以多道次变薄拉深过程中工件的实际外径与壁厚偏差作为性能指标，探究多道次变薄拉深时拉深速度对筒形件成形后尺寸精度的影响。结果表明：经多道次变薄拉深后，工件的实际外径与壁厚偏差皆小于理论值，随着拉深速度的增大，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，当拉深速度为15 mm·s-1时，工件实际外径最接近理论外径，壁厚偏差最小。

The ironing speed has an important effect on the forming quality of the whole cylindrical part in the multi-pass ironing process. In order to investigate the influence of ironing speed on the dimension accuracy of formed part, the different ironing speeds in the multi-pass ironing process were studied by the finite element numerical simulation method, and the influences of ironing speed on the dimension accuracy of formed cylindrical part were investigated by taking the actual external diameter and wall thickness deviation of part in the multi-pass ironing process as the performance indexes. The results show that the actual external diameter and wall thickness deviation of part are smaller than the theoretical values after the multi-pass ironing, and with the increasing of ironing speed, the external diameter of part increases first and then decreases, on the contrary, the wall thickness deviation of part decreases first and then increases. When the ironing speed is 15 mm·s-1, the actual external diameter of part is the closest to the theoretical diameter, and the wall thickness deviation of part is the smallest.

基金项目：

吕梁学院科研基金项目（ZRON201605）

宋要斌（1967-），男，学士，副教授，E-mail：syb63501@126.com；通讯简介：李辉(1985-)，男，硕士，讲师，E-mail：464956946@qq.com

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