一种超长悬臂零挠度机械结构设计  

Design of a Mechanical Structure with Ultra-Long Cantilever and Zero Deflection

作　　者：邓明萌[1] 连克难[1] 何朝晖[1] 朱建平[1] DENG Ming-meng;LIAN Ke-nan;HE Zhao-hui;ZHU Jian-ping(Institute of Mechanical Manufacturing Technology of CAEP,Sichuan Mianyang 621900,China)

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621900

出　　处：《机械设计与制造》2020年第9期248-251,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(51177155)。

摘　　要：在某大型实验装置中,需要设计零挠度的超长悬臂筒体作为其核心部件。该部件通过端部支架支撑,完全独立悬臂。为实现该结构的零挠度,通过研究“预上翘挠度补偿”原理,确定了预上翘角度理论计算及采用双楔形垫片调节预上翘角度的方法。并根据该部件的材料参数,对构件的挠度、调节角度和双楔形垫片旋转角度进行了具体的分析设计,结构优化及仿真分析。设计出中心轴线直线度优于2mm、悬臂结构末端挠度为零、总长度达20.2m的悬臂筒体,并实现了工程应用。As a core component of a large experimental device,an ultra-long cantilever tube with zero deflection is needed。The component is shored up by the end bracket and is completely independent of the cantilever.In order to realize the zero deflection of the structure,by studying the principle of“pre-warping deflection compensation”,the theoretical calculation of the pre-warping angle and the method of adjusting the pre-warping angle by double wedge-shaped gasket are chosen.According to the material parameters of the component,the detail analysis design of the deflection,adjustment angle and double wedge shape rotation angle of the component are carried out.And the structure optimization and simulation analysis arefulfilled too.Based on the pre-research.the cantilever tube with the central axis straightness less than 2mm.zero deflection and 20.2m in total length is designed and realized.

关 键 词：零挠度 悬臂筒体 双楔形垫片 直线度 

分 类 号：TH16[机械工程—机械制造及自动化] TH122