摘要
接头类零件广泛存在于航空结构件中,其具复杂多面结构。现普遍使用立卧转换机床进行加工,采用从上往下的方式将零件结构一次性加工出来,零件底部保留片状凸台连接结构,即反拉方案。在反拉方案中往往存在凸台连接设置不确定的问题,凸台连接数量过多、尺寸太厚均会增加钳工打磨工作量,凸台连接数量太少、尺寸太薄易导致零件加工不稳定。对接头类零件反拉方案中凸台连接展开了研究,首先建立了凸台连接力学模型,通过理论分析计算其受力情况,并将推导结论应用于实际加工中,确定了某接头零件的反拉方案,通过合理设置凸台连接的位置和数量,形成了凸台连接的优解方案,有效平衡了零件加工风险和钳工工作量。该优化方法具有广泛适用性,可推广应用至其他具有类似结构的飞机结构件中。
Joint parts are widely found in structural parts of aviation,with complex and multi-faced structures.Nowadays,vertical-horizontal conversion machine tools are generally used to process parts from top to bottom at one time,and the flaky boss connection structure remains at the bottom of the part.In the anti-pull scheme,generally,there are problems with the boss connection setting.Too many boss connections or too thick dimensions will increase the fitter’s workload.Too few boss connections or too thin dimensions can easily lead to unstable processing.In this article,the boss connection of joint parts is explored,and the mechanical model of boss connection is set up.The force of the boss connection is calculated,and the conclusion is applied to the actual processing,so the anti-pull scheme of joint parts is worked out.By setting the position and quantity of the boss connection reasonably,an optimal solution for the boss connection is formed.This optimization method balances the processing risk of the parts and the fitter’s workload effectively.It,with wide applicability,can be used for craft structural parts with similar structures.
作者
毛一砚
杨洋
周文昌
陈建波
周进
龚清洪
MAO Yi-yan;YANG Yang;ZHOU Wen-chang;CHEN Jian-bo;ZHOU Jin;GONG Qing-hong(AVIC Chengdu Aircraft Industrial(Group)Co.,Ltd.,Chengdu 610091;Institute of Materials,China Academy of Engineering Physics,Jiangyou 621700)
出处
《机械设计》
CSCD
北大核心
2022年第10期114-118,共5页
Journal of Machine Design
基金
国防基础科研项目(JCKY2018205B014)。
