Wing docking tolerance allocation based on key measurement features

doi:10.3785/j.issn.1006-754X.2022.00.034

Chin J Eng Design

2022, Vol. 29

Issue (3): 300-308 DOI: 10.3785/j.issn.1006-754X.2022.00.034

Design for Quality

Wing docking tolerance allocation based on key measurement features

Yong-de ZHANG¹(

),Qing WANG²(

),Wei-feng YANG²

^1.AVIC Xi'an Aircraft Industry Croup Company Ltd. , Xi'an 710089, China
^2.Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province, Zhejiang University, Hangzhou 310027, China

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Abstract

Aiming at the problem that it is difficult to ensure the accuracy of wing docking during aircraft assembly, which affects the aerodynamic contour and flight stability of the aircraft, a tolerance allocation model based on the node which was measured data of key measurement features was established.Based on measurement aided assembly technology, the key measurement features of aircraft in assembly process were defined.The geometric relationship between key measurement features in wing docking was analyzed, and the measurement uncertainty of on-site measurement equipment was considered. On this basis, a tolerance allocation model with the measured data of key measurement features as nodes was established.The test results showed that the quality and efficiency of aircraft assembly could be significantly improved by using the tolerance allocation model to allocate the tolerances of installation angle, top inverse angle and symmetry of wing, and integrating the allocated tolerance information into the digital assembly system.The research results can provide certain theoretical guidance for the assembly feature definition and tolerance allocation in the docking process of aircraft wings.

Key words： wing docking horizontal measurement key feature measurement uncertainty tolerance modeling tolerance allocation

Received: 18 January 2021 Published: 05 July 2022

CLC:

V 262.4

Corresponding Authors: Qing WANG E-mail: zhangyongde_2007@163.com;wqing@zju.edu.cn

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Cite this article:

Yong-de ZHANG,Qing WANG,Wei-feng YANG. Wing docking tolerance allocation based on key measurement features. Chin J Eng Design, 2022, 29(3): 300-308.

URL:

https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2022.00.034 OR https://www.zjujournals.com/gcsjxb/Y2022/V29/I3/300

基于关键测量特征的机翼对接容差分配

针对在飞机装配过程中机翼对接准确度难以保证而影响飞机的气动外形和飞行平稳性的问题，建立了一种以关键测量特征的测量数据为节点的容差分配模型。基于测量辅助装配技术，对装配过程中飞机的关键测量特征进行定义。分析了机翼对接中关键测量特征间的几何关系，考虑了现场测量设备的测量不确定度，在此基础上建立了以关键测量特征的测量数据为节点的容差分配模型。试验结果表明，利用容差分配模型对机翼的安装角、上反角和对称性等进行容差分配，将分配的容差信息融入数字化装配系统，可以显著提高飞机装配的质量和效率。研究结果可以为飞机机翼对接过程中装配特征的定义和容差分配提供一定的理论指导。

关键词： 机翼对接, 水平测量, 关键特征, 测量不确定度, 容差建模, 容差分配

Fig.1 Technical route for digital defining of key measurement features

Fig.2 Component feature extraction interface

Fig.3 Implementation effect schematic of mathemat ical model lightweight

Fig.4 Measurement schematic of T-Probe detector and laser tracker

Fig.5 Distribution schematic of horizontal measurement points on wing

Fig.6 Schematic of wing longitudinal deviation

Fig.7 Schematic of wing lateral deviation

Fig.8 Schematic of wing twist deviation

站位编号	$x$	$y$	$z$
1	-1 591.958	10 399.660	-1 395.025
2	-321.784	10 399.730	-1 394.734
3	-3 678.300	10 037.150	-1 394.889
4	-2 433.808	9 771.595	-1 393.915
5	-3 431.695	9 905.397	-1 393.931
6	-3 589.971	9 940.106	-1 394.707
7	-836.109	10 536.925	-1 393.979
8	-1 916.283	9 467.790	-1 393.652
9	-2 628.691	12 182.489	-1 395.553
10	-2 819.153	12 120.803	-1 395.294

Table 1 Measured value of the first ERS point at 10 stations

Table 2 Horizontal measurement requirements in the process of wing docking of an aircraft


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