摘要
为了实现连接板材表面无凸起、无凹陷,提出了一种带填充块的预制孔平底铆接技术。以半径为3 mm,高度为3.7 mm的GCr15填充块,厚度为2 mm的Al5052和45钢板材铆接为例,在下板上预制半径为3.8 mm,锥角为45°的孔进行带填充块的预制孔平底铆接试验研究。通过五因素四水平正交试验,优化了填充块圆角半径R、半锥角α、预制孔圆角半径R0、倒角长度l和冲压速度v等工艺参数;以铆接接头互锁值作为评价标准,获得了最佳几何参数组合为R=0.4 mm,α=5°,R0=0.2 mm,l=1.2 mm和v=0.1 mm·s^(-1)。对比上铝下铝和上铝下钢板材形成的铆接接头质量发现,上铝下钢板材形成的铆接接头互锁值较大,连接质量较好。
To achieve the joint plate without bump and sag on the surface,a flat bottom riveting technology with prefabricated hole and filler block was proposed.Taking GCr15 filler block with radius of 3 mm and height of 3.7 mm,and Al5052 and 45 steel plate with thickness of 2 mm as an examples,the hole with radius of 3.8 mm and cone angle of 45°was prefabricated on lower plate to carry out the study of flat bottom riveting test with prefabricated hole and filler block.The parameters,such as filler block fillet radius R,half-cone angleα,prefabricated hole fillet radius R0,chamfer length l and stamping speed v were optimized by five-factor and four-level orthogonal test.Using the riveted joint interlocking value as the evaluation criterion,the optimal geometric parameter combination is obtained as R=0.4 mm,α=5°,R0=0.2 mm,l=1.2 mm and v=0.1 mm·s-1.By comparing the quality of riveted joints formed by upper aluminumlower aluminum and upper aluminum-lower steel plates,it is found that the interlocking value of riveted joint formed by upper aluminumlower steel plate is larger and the joint quality is better.
作者
李结绿
何亚银
陈礼军
赵永强
LI Jie-lü;HE Ya-yin;CHEN Li-jun;ZHAO Yong-qiang(School of Mechanical Engineering,Shaanxi University of Technology,Hanzhong 723001,China;Shaanxi Key Laboratory of Industrial Automation,Hanzhong 723001,China)
出处
《塑性工程学报》
北大核心
2025年第2期105-111,共7页
Journal of Plasticity Engineering
基金
陕西省自然科学基础研究计划项目(2023-JC-YB-452)。
关键词
预制孔平底铆接
板材铆接
无铆钉铆接
铆接接头
flat bottom riveting with prefabricated hole
plate riveting
riveting without rivet
riveted joint
