薄壁卷圆管自定心夹具结构优化设计  

Structural Optimization Design of Self-centering Fixture for Thin-walled Coil Tube

作　　者：戴彬 钱应平[1] 薛杭 车沈炀 DAI Bin;QIAN Yingping;XUE Hang;CHE Shenyang(School of Mechanical Engineering,Hubei Univ.of Tech.,Wuhan,Hubei 430068,China)

机构地区：[1]湖北工业大学机械工程学院,湖北武汉430068

出　　处：《湖北工业大学学报》2024年第2期43-48,共6页Journal of Hubei University of Technology

基　　金：湖北省科技厅重大专项(2020BAB037)。

摘　　要：为满足不同直径、长度、厚度规格的圆筒类工件焊接过程中的装夹需要并减轻其夹具的质量。通过自定心夹具的结构设计及受力分析,建立夹具结构的有限元模型,并使用有限元分析获得夹具的静态特性。在此基础上利用尺寸优化的设计方法,对其进行了以减轻质量为目标的优化设计,最终完成了对V型夹具的轻量化设计。将优化后的V型夹具与优化前进行比较,结果显示:在夹具最大变形量小于0.5 mm且最大应力值小于156 MPa的情况下,单个V型块的质量由初始设计时的33.854 kg减小到了14.954 kg,减轻了55.83%。通过尺寸优化设计,减轻了夹具质量,提高了夹具的工作性能,该研究结果可对圆管直缝焊接设备的夹具相关研究提供参考。In order to meet the clamping needs in the welding process of cylindrical workpieces with different diameters,lengths and thicknesses,and reduce the quality of the fixtures,through the structural design and force analysis of the self-centering fixture,the finite element model of the fixture structure was established,and the static characteristics of the fixture were obtained by finite element analysis.On this basis,the design method of size optimization was used to optimize the design aiming at reducing the mass,and finally the lightweight design of the V-shaped fixture was completed.Comparing the optimized V-shaped clamp with that before optimization,the results show that when the maximum deformation of the clamp is less than 0.5 mm and the maximum stress value is less than 156 MPa,the mass of a single V-shaped block was reduced from the original design of 33.854 kg to14.954 kg,reduced by 55.83%.Through the size optimization design,the quality of the fixture was reduced and the working performance of the fixture was improved.The research results can provide a reference for the related research on the fixture of the straight seam welding equipment.

关 键 词：自动定心夹具 受力分析 V型夹具 优化设计 

分 类 号：TH122[机械工程—机械设计及理论]