摘要
针对平模无铆冲压连接工艺的接头力学性能较低的问题,提出一种利用压边圈移动控制材料流动的压边圈随动无铆冲压连接工艺。利用DEFORM-2D对Al5052板材的压边圈随动无铆冲压连接过程进行数值模拟,分析压边圈压力和压边圈限位位置对接头结构参数和材料流动的影响。然后基于田口试验方法优化冲头直径、冲头圆角半径、冲头速度、压边力以及压边圈限位位置等工艺参数,并利用极差分析得到影响接头嵌入量的主次要素。研究结果表明:影响接头质量的主要因素为压边圈压力和限位位置;接头嵌入量随压边力的增加及压边圈限位位置的升高均为先增加后减小;合理的压边圈限位位置能够促进嵌入量的增加,从而提高接头的机械性能。
To solve the problem of poor mechanical properties of the joint formed by flat-clinching,a movable blank holder clinching technique utilizing the movement of the blank holder to control the material flow was proposed.Numerical simulations of the movable blank holder clinching process of Al5052 sheets were carried out by DEFORM-2D to analyze the influence of the blank holder pressure and its limit position on joint structure parameters and the material flow.Afterwards Taguchi method was used to optimize the process parameters including punch diameter,punch fillet radius,punch speed,blank holder pressure and limit position.Range analysis was also used to obtain the primary and secondary elements affecting the joint interlocks.The results show that the main factors affecting the quality of the clinched joint are blank holder pressure and blank holder limit position.Interlock increases initially and decreases afterwards with the increase of the blank holder pressure and the limit position.A suitable limit position of blank holder can promote the increase of interlock and thus improve the mechanical properties of the joint.
作者
韩善灵
王化楠
王志勇
王建松
李勇
HAN Shanling;WANG Huanan;WANG Zhiyong;WANG Jiansong;LI Yong(College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;College of Transportation,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2021年第2期103-110,共8页
Journal of Shandong University of Science and Technology(Natural Science)
基金
山东省自然科学基金项目(ZR2018MEE024)
山东省高等学校科技计划项目(J17KA018)。
