摘要
为解决氮气弹簧装配过程中零件损伤,实现零件的无损装配,设计了一种基于手动冲床原理的压装机构。该机构用于氮气弹簧缸体、柱塞杆的压装动作。为使操作时力的使用效率更高,根据控制变量法设计了两组试验。通过试验结果分析两因素对机构效率的影响,并根据试验数据对两因素进行合理组合以优化压装机构。对优化后的机构进行有限元分析,确定机构各零件和整体强度合格,最后对应力较大的零件进行疲劳分析。该机构既减轻了工人劳动强度、提高了效率,又提高了零件装配的质量。
In this article,in order to eliminate damage and realize non-destructive assembly of parts in the process of nitrogen-spring assembly,a press-assembly mechanism based on the principle of manual operation is developed.The mechanism is used for press and assembly of the nitrogen spring’s cylinder block and plunger rod.In order to make the force utilization more efficient in operation,two groups of experiment are carried out according to the principle of variable control.The experiment results are adopted to analyze the influence of two factors on mechanism efficiency,and they are combined reasonably so as to optimize the press-assembly mechanism.The optimized mechanism is analyzed by means of the finite-element method;as a result,each part and the whole mechanism are qualified in strength.Finally,the fatigue analysis is conducted on those parts with large stress.The mechanism not only reduces labor intensity and ensures higher efficiency,but also improves the quality of part assembly.
作者
包贺
方素平
BAO He;FANG Su-ping(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009)
出处
《机械设计》
CSCD
北大核心
2020年第5期27-31,共5页
Journal of Machine Design
基金
宣城市科技计划资助项目(XC2015XKKJ01)。
关键词
氮气弹簧
压装机构
有限元分析
疲劳计算
nitrogen spring
press-assembly mechanism
finite-element analysis
fatigue calculation*
