|
摘要：
|
|
为了准确的反映板材成形过程中摩擦系数的真实情况,构建板材冲压成形摩擦系数实时测量系统,通过改变凸模圆角半径、凸模拱高和模面曲率半径、拉深筋圆角半径等几何参数,利用有限元软件计算不同模具模面下板材冲压及胀形过程中材料流动的变化情况,得到了材料流动量随各种参数变化的规律曲线,并以此优化设计了板材拉深及胀形模具模面,确定了组合式特征传感器的安装位置,为板材成形摩擦系数实时测量平台的建立提供了指导依据。
|
|
In order to reflect the real friction coefficient in the process of forming exactly and develop a real-time measure system of forming,the geometry parameters, such as punch profile radius,the arch rise and radius of curvature,the draw bead profile radius etc.were changed and the displacement in the process of stamping and bulging were analyzed by the finite element software.The curves of the displacement and other parameters were found,by which the punch surface would be optimized and the installed positions of the combined specificity sensor were confirmed.It would be the directive gist for founding the real-time measure system for friction coefficient of sheet metal forming.
|
|
基金项目：
|
|
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]徐树成,王先进.板成形中摩擦系数测定的研究进展[J].塑性工程学报,2000,6(7):40-43.
[2]郭正华,李志刚,黄重九,等.塑性成形过程摩擦测试的研究进展[J].塑性工程学报,2004,11(3):1-6.
[3]王东哲,何丹农,娄臻亮,等.ST14钢板冲压成形摩擦特性研究[J].机械工程材料,2001,25(6):10-11.
[4]Emmems W C.The influence of surface rougheness on fric-tion[A].Proceedings of the 15th IDDRG(InternationalDeep Drawing Research Group)[C].Dearborn,USA,1988.
[5]池浩.L型引拔試驗表面處理鋼板性檢討[J].塑性と加工,1994,35:145-151.
[6]Liu Y J,Tieu A K,Wang D D,et al.Friction measurementin cold rolling[J].Journal of Materials Processing Technolo-gy,2001,111(1-3):142-145.
[7]李双义,张连洪,阎勇,等.覆盖件模具的摩擦因数和实际拉延筋拉延阻力的测定[J].汽车技术,2003,(12):40-42.
[8]朱伟,张质良,娄臻亮,等.一种测量板料拉深摩擦因数的传感器设计[J].机械工程材料,2005,9(29):24-27.
[9]刘长丽,周贤宾,陈劼实.板料拉伸破裂厚度分布及成形极限预测[J].锻压技术,2006,31(5):147-150.
|
|
服务与反馈：
|
|
【本网站尚未开通全文下载服务】【加入收藏】
|
|
|
|
