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Assembly error propagation modeling and coordination error chain construction for aircraft

机译：飞机装配误差传播建模与协调误差链构建

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PurposeManufacturing errors, which will propagate along the assembly process, are inevitable and difficult to analyze for complex products, such as aircraft. To realize the goal of precise assembly for an aircraft, with revealing the nonlinear transfer mechanism of assembly error, a set of analytical methods with response to the assembly error propagation process are developed. The purpose of this study is to solve the error problems by modeling and constructing the coordination dimension chain to control the consistency of accumulated assembly errors for different assemblies.Design/methodology/approachFirst, with the modeling of basic error sources, mutual interaction relationship of matting error and deformation error is analyzed, and influence matrix is formed. Second, by defining coordination datum transformation process, practical establishing error of assembly coordinate system is studied, and the position of assembly features is modified with actual relocation error considering datum changing. Third, considering the progressive assembly process, error propagation for a single assembly station and multi assembly stations is precisely modeled to gain coordination error chain for different assemblies, and the final coordination error is optimized by controlling the direction and value of accumulated error range.FindingsBased on the proposed methodology, coordination error chain, which has a direct influence on the property of stealthy and reliability for modern aircrafts, is successfully constructed for the assembly work of the jointing between leading edge flap component and wing component at different assembly stations.Originality/valuePrecise assembly work at different assembly stations is completed to verify methodologys feasibility. With analyzing the main comprised error items and some optimized solutions, benefit results for the practical engineering application showing that the maximum value of the practical flush of the profiles between the two components is only 0.681 mm, the minimum value is only 0.021 mm, and the average flush of the entire wing component is 0.358 mm, which are in accordance with theoretical calculation results and can successfully fit the assembly requirement. The potential user can be the engineers for manufacturing the complex products.
机译：目的制造错误会在装配过程中传播，这是不可避免的，并且很难对飞机等复杂产品进行分析。为了实现飞机的精确装配目标，通过揭示装配误差的非线性传递机理，开发了一套响应装配误差传播过程的分析方法。本研究的目的是通过建模和构造协调尺寸链来控制不同组件的累积装配误差的一致性来解决误差问题。设计/方法/方法首先，通过基本误差源的建模，消光的相互关系分析误差和变形误差，形成影响矩阵。其次，通过定义坐标基准转换过程，研究了装配坐标系的实际建立误差，并通过考虑基准面变化的实际重定位误差来修改装配特征的位置。第三，考虑到渐进式装配过程，对单个装配工位和多个装配工位的误差传播进行精确建模，以获得不同装配的协调误差链，并通过控制累积误差范围的方向和值来优化最终的协调误差。根据提出的方法，成功构建了对现代飞机的隐身性和可靠性有直接影响的协调误差链，以在不同的装配工位进行前襟翼组件与机翼组件之间的接合的装配工作。价值在不同组装站的精确组装工作已经完成，以验证方法学的可行性。通过分析主要的误差项和一些优化的解决方案，对实际工程应用的有益结果表明，两个组件之间的轮廓实际平齐的最大值仅为0.681 mm，最小值仅为0.021 mm，并且整个机翼组件的平均平齐度为0.358毫米，符合理论计算结果，可以成功满足装配要求。潜在的用户可以是制造复杂产品的工程师。

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