随机振动过程螺钉松脱原因判定方法
Method of determining the cause of screw detachment during random vibration
摘 要
在对电子产品进行振动筛选时，其紧固螺钉经常出现松动、松脱等故障。对螺钉松脱的原因进行分析，明确了影响螺纹联接松脱的3个因素的排查方法和排除条件，建立了螺钉松脱原因判定方法，并在实践案例中进行了应用，结果可为提高产品的可靠性提供理论支持。
螺钉
预紧力
松脱
原因判定
thread connection
screw
pre tightening force
detachment
cause determination
Abstract
When electronic products undergo vibration screening, their fastening screws often experience malfunctions such as looseness and detachment. An analysis was conducted on the causes of screw detachment, and the investigation methods and exclusion conditions for the three factors affecting thread connection detachment were clarified. A method for determining the causes of screw detachment was established and applied in practical cases. The results could provide theoretical support for improving product reliability.
中图分类号 TB30 DOI 10.11973/lhjy-wl202305004
所属栏目 试验技术与方法
基金项目
收稿日期 2022/8/22
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备注俞华(1984-),男,本科,工程师,主要从事电子设备装配可靠性、电子设备装配工艺的研究工作,yuhua313@163.com
引用该论文: YU Hua,ZHU Jinglei,FENG Weiwei. Method of determining the cause of screw detachment during random vibration[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2023, 59(5): 16～19
俞华,朱景磊,冯卫炜. 随机振动过程螺钉松脱原因判定方法[J]. 理化检验－物理分册, 2023, 59(5): 16～19
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参考文献
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【3】苏东伟,王学志.船舶常用螺栓预紧力和拧紧力矩的确定[J].船海工程,2019,48(2):127-130.
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