预制孔式无铆连接尺寸关系对铆接质量的影响研究
Study on the effect of dimensional relationship on riveting quality of preformed hole type rivetless joints
刘石 1赵永强 2王大海 1梅苗园 1侯红玲 2李结绿1
作者信息
- 1. 陕西理工大学 机械工程学院,陕西 汉中 723000
- 2. 陕西理工大学 机械工程学院,陕西 汉中 723000;陕西省工业自动化重点实验室,陕西 汉中 723000
- 折叠
摘要
为了研究预制孔无铆连接的工艺参数对铆接质量的影响,设计了预制孔无铆连接模型,以板厚、冲头半径、预制孔半径、倒角尺寸等为变量,分析得到了无铆连接中一种变量组合对应的该种组合下预制孔尺寸的最佳取值.建立了预制孔无铆连接的有限元模型,通过DEFORM-2D软件模拟预制孔无铆连接过程,控制铆接成形后的铆接头底厚值为 0.2 mm,在预制孔半径范围计算公式所确定的范围内选取预制孔最佳尺寸参数,研究了预制孔倒角尺寸对铆接头成形质量的影响.结果表明,预制孔的半径、倒角尺寸等直接影响铆接头质量,上、下板材厚度均为2 mm,预制孔半径选用4.01 mm,倒角尺寸为1.2×45°时,铆接质量最好;铆接速度影响铆接头的颈厚值,铆接速度越大,颈厚值越小.
Abstract
In order to study the influence of process parameters on riveting quality of rivetless connec-tion,a model of rivetless connection of prefabricated holes was designed to analyze and obtain the optimal val-ues of prefabricated hole dimensions under one combination of variables corresponding to the combination of plate thickness,punch radius,prefabricated hole radius,and chamfering dimensions,etc,with plate thick-ness,punch radius,prefabricated hole radius,and chamfering dimensions as variables in the rivetless connec-tion.A finite element model of rivetless connection with preformed holes was established,and the software DEFORM-2D was used to simulate the process of rivetless connection with prefabricated holes.The bottom thickness of the riveted joint was controlled at 0.2 mm.The optimal size parameters for the prefabricated holes were selected within the range determined by the calculation formula for the radius of the prefabricated holes.The influence of the chamfer size of the prefabricated holes on the forming quality of the riveted joint was stud-ied.The results show that the radius of the preformed hole,chamfer size,etc.directly affect the quality of the riveted head,the upper and lower plate thickness of 2 mm,preformed hole radius selection of 4.01 mm,chamfer size of 1.2×45°,the best riveting quality;riveting speed affects the riveted head of the neck thick-ness value,and the larger the riveting speed,the smaller the neck thickness value.
关键词
预制孔无铆连接/模具尺寸关系/数值模拟/铆接质量Key words
preformed hole rivetless riveting/mold size relationship/numerical simulation/riveting quality引用本文复制引用
基金项目
陕西省自然科学基础研究计划(2023-JC-YB-452)
出版年
2024
NETL
NSTL
维普
万方数据