适用于三段大部件对接的柔性装配平台设计与优化

Design and optimization of flexible assembly platform used for three sections joint

针对飞机数字化装配系统要求具有充分柔性的问题,提出一种能同时满足3种不同机型的柔性装配平台,主要内容包括:根据3种不同机型工艺接头的安装位置,采用六块机身移动平台进行支撑的布局方案,并优化移动平台的外形尺寸;对移动平台进行结构设计,并采用有限元分析得到平台的应力分布、承载变形和振动模态;使用拓扑优化工具找寻与移动平台载荷匹配的加强筋分布,通过对比分析得到一种新的加强筋分布形式.该平台通过简单的配置可以适用于结构尺寸相近的不同飞机共平台装配,且工作稳定可靠,具有充分的柔性.

A novel flexible assembly system was presented for the aircraft final assembly of three aircraft models to satisfy the requirement of flexibility in digital assembly for aircraft. Firstly, according to the technically supporting position on three aircrafts, a layout including six the movable-platforms was proposed. Dimension optimization of the movable-platforms was followed. Secondly, the mechanical structure of the movable-platforms was designed, and the mechanical analysis of the platforms was carried out by using FEA method, including strength analysis, stiffness analysis and modal analysis. Finally, aimed at the situation of loads applied on the movable-platforms, a reasonable layout of inner ribs was searched based on the topology optimization theory. Then, a new shape of ribs was recommended after comparing and, analyzing. The above design for assembly platform can configure to the assembly of almost all fighter planes with similar structure and size, and is reliable, efficient and flexible.