超大空间温度变化对飞机装配协调精度的影响规律

飞机大型构件一般由多材料、多尺寸零/组件按照一定工艺装配而成,大尺寸装配空间场内的温度变化会引起零/组件在装配过程中产生较大且不一致的热变形,进而影响飞机产品装配协调精度。本文基于百万立方米全域作业空间内的飞机大型复材构件的高精度装配需求,研究了温度变化对工装及产品在不同材料组合方式的热变形影响。以某型飞机典型复材翼盒构件装配为分析对象,结果表明当温度变化5℃时,影响装配协调精度偏差约0.1~0.2mm。因此,在装配工艺设计过程中,需要考虑±5℃的温度变化对产品装配热变形的误差补偿,对提高飞机装配协调精度具有重要意义。

Thousands of cubic meters of work space The temperature changes in the interaction of the coordination of aircraft assembly affect the law of the law

Large aircraft components are generally assembled by multi-material and multi-size components according to a certain process. The temperature change in the large-size assembly space will cause large and inconsistent thermal deformation of components during assembly, which will further affect the assembly coordination accuracy of aircraft products. In this paper, based on the requirement of high-precision assembly of large-scale composite components of aircraft in a million cubic meters of global working space, the influence of temperature change on the thermal deformation of tooling and products in different material combinations is studied. Taking the assembly of a typical composite wing box component of an aircraft as the analysis object, the results show that when the temperature changes by 5℃, the assembly coordination accuracy will be affected by about 0.1 ~ 0.2 mm. Therefore, in the process of assembly process design, it is necessary to consider the compensation problem of thermal deformation error of product assembly caused by temperature change of 5℃, which is of great significance to improve the coordination accuracy of aircraft assembly.