牛孝霞,龙 洋,卢文彪.基于基准控制的低压涡轮转静子装测一体化方法[J].航空发动机,2024,50(3):122-127
基于基准控制的低压涡轮转静子装测一体化方法
Integrated Assembly and Measurement Method for LPT Rotor and Stator Based on Datum Control
  
DOI:
中文关键词:  低压涡轮转子同心度  高精度测量  装测一体化  基准控制  装配精度  航空发动机
英文关键词:concentricity of LPT rotor  high-precision measurement  integration of assembly and measurement  datum control  assembling precision  aeroengine
基金项目:航空动力基础研究项目资助
作者单位
牛孝霞,龙 洋,卢文彪 中国航发沈阳发动机研究所沈阳 110015 
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中文摘要:
      为进行大涵道比航空发动机低压涡轮转子同心度的精确测量与控制,根据其多级耦合的结构特点和0.05 mm转子同心 度的控制需求,开展了基于基准控制的低压涡轮转静子高精度装测一体化方法研究。通过基准调节方法实现测量基准与回转轴 线重合,消除了定位误差;通过基准保持方法避免了装配操作对基准的影响,保证了测量基准姿态的一致性;结合质心对转子不平 衡量的影响,搭建了专用测试系统,实现对低压涡轮转子同心度的装配结果管控。将该方法应用于发动机低压涡轮转静子装配, 结果表明:实现了0.0125 mm转子跳动的精确测量,有效避免了低压涡轮转子初始不平衡量超差,减少了重复装分工作,提高了装 配质量和效率,对多级部件同心度的高精度测量具有工程指导意义。
英文摘要:
      In order to accurately measure and control the concentricity of the LPT (Low-Pressure Turbine) rotor of a high bypass ratio engine. Research on high-precision integrated assembly and measurement methods for LPT stator and rotor based on datum control was conducted according to the structural characteristics of multistage coupling and the requirement of 0.05mm rotor concentricity. Positioning errors were eliminated by adjusting the measuring datum to coincide with the rotating axis. The influence of assembly opera? tions on the datum was avoided, and the attitude of the measuring datum was kept consistent by the datum holding technique. By analyzing the influence of centroid on rotor unbalance, a dedicated testing system was built to control the assembly results of concentricity of the LPT rotor. This method was successfully applied to the assembly of the LPT rotor and stator, and the results show that the proposed method can accurately measure the rotor runout of 0.0125mm, effectively avoid the out of tolerance of the LPT rotor initial unbalance, reduce repeti? tive assembly and disassembly work, and improve assembling quality and efficiency, providing engineering guidance for high-precision concentricity measurement of multi-stage component.
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