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Improvement of location and orientation tolerances propagation control in cylindrical components assembly using stack-build assembly technique

机译：使用堆栈构建装配技术改进圆柱零件装配中位置和方向公差的传播控制

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Purpose - This paper aims to provide an assembly method to improve cylindrical components assembly quality. The proposed method not only could be applied to tolerance allocation, but also could guide the assembly of cylindrical components. Design/methodology/approach - The paper claims to provide a stack-build assembly method using a connective assembly model to take the location and orientation tolerances of a rotor stage into account. Through the separate analysis of the location and orientation tolerances propagation process in the assembly, the quality of the final assembly of the rotationally symmetric cylindrical components assembly could be improved by properly selecting component orientations to minimize the eccentric deviation in the assembly. Findings - The effectiveness of the proposed stack-build assembly technique in improving the tolerance propagation in the assembly of cylindrical components was verified through experiments run with a measuring machine. A real aero-engine rotor was assembly using the proposed method; compared to the direct-build assembly technique, which had the component orientations without consideration, the stack-build assembly technique could be used to reduce the eccentric deviation in cylindrical components assembly by nearly 50 per cent. Originality/value - Different with the old methods, the new method defined the tolerances in detail, such as perpendicularity and angle of the lowest point, and could guide the assembly by the features of surfaces on different components. Through measuring the special tolerances of surfaces on the components, the best assembly angle for each component could be obtained.
机译：目的-本文旨在提供一种提高圆柱零件装配质量的装配方法。所提出的方法不仅可以应用于公差分配，而且可以指导圆柱零件的组装。设计/方法/方法-本文声称要提供一种使用连接装配模型的堆栈构建装配方法，以考虑转子台的位置和方向公差。通过对组件中位置和方向公差传播过程的单独分析，可以通过适当选择组件方向以使组件中的偏心偏差最小化，来提高旋转对称圆柱组件的最终组件的质量。发现-通过使用测量机进行的实验验证了所提出的堆栈构建装配技术在改善圆柱零件装配中的公差传递方面的有效性。使用提出的方法组装了真正的航空发动机转子。与不考虑零件方向的直接装配装配技术相比，可以使用堆栈装配装配技术将圆柱形零件装配的偏心偏差减小近50％。独创性/价值-与旧方法不同，新方法详细定义了公差，例如最低点的垂直度和角度，并且可以通过不同组件上的曲面特征来引导装配。通过测量零件表面的特殊公差，可以获得每个零件的最佳装配角度。

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