一体式气动夹具的优化设计与研究

发布时间：2018-05-18 00:16

本文选题：拓扑优化 + 机构优化设计　；参考：《合肥工业大学》2015年硕士论文

【摘要】：本文是对一体式气动夹具进行机构和结构的优化设计：完成了一体式气动夹具连杆机构的设计,同时对其工作特性进行了分析,为一体式气动夹具在白车身焊装领域的广泛应用提供理论依据及为近似机构的设计和性能分析提供参考；完成了对夹臂元件的轻量化设计,并比较了优化前后的性能差异,为一体式气动夹具其它零部件设计提供参考；完成了气缸部分的流场分析,为气口位置及活塞结构设计提出了合理的建议。本文通过使用Matlab软件完成了对一体式气动夹具连杆机构的设计及其工作特性的分析,分析得到了连杆和遥杆的合理长度,夹臂打开角度可调,且在最大夹紧力矩下,夹具具有可靠性较高的自锁功能。使用ANSYS软件对夹臂进行拓扑优化设计、应力分析和变形分析,通过软件中拓扑优化模块分析得到了在满足一定约束的条件下,最优结构的夹臂模型,同时运用软件中应力分析模块,比较了优化前后夹臂模型的应力分布和位移分布情况,从而提出了更优化夹臂模型。使用GAMBIT软件对简化后的气缸模型进行了网格划分,使用流体动力学FLUENT软件,对其进行了流体仿真分析,分析出了流体内部活塞附近的流场分布以及活塞的受力情况；最后对一体式气动夹具进行了研究展望,指出了一体式气动夹具还有待发展的方面。全文都是围绕着一体式气动夹具进行研究分析,对提高我国焊装夹具的自动化和柔性化以及促进我国汽车工艺装备的自主研发水平具有相当重要的意义。
[Abstract]:In this paper, the optimization design of the mechanism and structure of the integrated pneumatic fixture is carried out: the design of the linkage mechanism of the integrated pneumatic fixture is completed, and the working characteristics of the mechanism are analyzed. It provides the theoretical basis for the wide application of the integrated pneumatic fixture in the field of welding and assembling of the white body, and provides a reference for the design and performance analysis of the approximate mechanism, completes the lightweight design of the clamping arm element, and compares the performance differences before and after the optimization. This paper provides a reference for the design of other parts of the integrated pneumatic fixture, completes the flow field analysis of the cylinder part, and puts forward some reasonable suggestions for the position of the air port and the design of the piston structure. In this paper, by using Matlab software, the design and working characteristics of the integrated pneumatic fixture linkage mechanism are analyzed. The reasonable length of the connecting rod and the remote rod, the adjustable opening angle of the clamping arm and the maximum clamping moment are obtained. Fixture has high reliability of self-locking function. By using ANSYS software to carry on topology optimization design, stress analysis and deformation analysis, through the analysis of topology optimization module in the software, the optimal structure of the clip arm model is obtained under the condition of satisfying certain constraints. At the same time, the stress distribution and displacement distribution of the pre-and post-optimization sandwich arm model are compared by using the stress analysis module in the software, and a more optimized sandwich arm model is proposed. The simplified cylinder model is meshed with GAMBIT software, and the fluid simulation analysis is carried out by using FLUENT software of fluid dynamics, and the flow field distribution near the piston in the fluid and the force acting on the piston are analyzed. Finally, the research prospect of integrated pneumatic fixture is discussed, and the development of integrated pneumatic fixture is pointed out. This paper is focused on the research and analysis of integrated pneumatic fixture, which is of great significance to improve the automation and flexibility of welding fixture in China and to promote the independent R & D level of automobile process equipment in China.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TG756

【参考文献】