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某航空发动机装配后,对通过上部减速器机匣对高压转子进行摇转检查时,多次发现低压转子存在跟随转动现象,通过放大高、低压转子之间摩擦副间隙的方法未排除故障,进一步复查发现故障发动机中介轴承外环过盈量偏大导致轴承装配游隙偏下限,分析认为轴承装配时存在较大的负游隙是同转现象出现的原因,该现象对发动机使用质量无明显影响,控制轴承装配游隙后可以排除。
Aeroengine assembly, the upper reducer casing on the high-pressure rotor for rocking inspection, the low-pressure rotor found several times to follow the phenomenon of rotation, by amplifying the high and low pressure friction between the deputy of the gap between the rotor does not rule out the malfunction, and further Review found that the fault occurred in the engine bearing outer ring interference is too large lead to the bearing assembly clearance lower limit analysis of the bearing assembly that there is a large negative clearance is the same phenomenon with the transfer phenomenon, the phenomenon of the quality of the engine had no significant impact , Control of bearing assembly clearance can be ruled out.