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航空发动机静子支点作为转子的支撑部位,由于制造工艺、装配误差和长时间工作的影响,较易出现支点不同心的现象。基于形状和位置公差理论,建立了一种发动机支点同心度的计算模型,并对某发动机的支点同心度分布进行了仿真计算。通过分析影响支点同心度的关键结构参数和测量支点同心度试验,提出了同心度的控制方法。结果表明:采用本文所述理论计算和控制方法,可准确地判断出发动机支点同心度是否符合标准,以便有针对性地选择调整措施,进而提高了发动机的装配质量,有效避免转、静子不同轴引起的碰摩问题,减小了发动机整机振动出现的几率。
Aero-engine stator fulcrum as the rotor’s support site, due to manufacturing processes, assembly errors and long hours of work, the more likely to have the phenomenon of different points of the heart. Based on the shape and position tolerance theory, a calculation model of the concentric degree of the engine fulcrum was established, and the concentric distribution of the fulcrum of the engine was simulated. By analyzing the key structural parameters that affect the concentricity of the fulcrum and the concentricity test of the fulcrum, the concentricity control method is proposed. The results show that the theoretical calculation and control method described in this paper can accurately determine whether the concentricity of the engine fulcrum meets the standard so as to select the adjustment measures in a targeted manner and improve the assembly quality of the engine so as to effectively avoid the difference of rotation and stator Rub impact caused by the shaft, reducing the chance of engine vibration.