带填充块的预制孔平底铆接工艺及参数设计  

Process and parameter design of flat bottom riveting with prefabricated hole and filler block

作　　者：李结绿 何亚银[1,2] 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)

机构地区：[1]陕西理工大学机械工程学院,陕西汉中723001 [2]陕西省工业自动化重点实验室,陕西汉中723001

出　　处：《塑性工程学报》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)。

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.

关 键 词：预制孔平底铆接 板材铆接 无铆钉铆接 铆接接头 

分 类 号：TG389[金属学及工艺—金属压力加工]