Troubleshooting method of aero-engine rolling rod bearing skidding

Abstract

The invention provides a troubleshooting method of aero-engine rolling rod bearing skidding, which comprises the steps that the mechanism of an aero-engine rolling rod bearing skidding trouble is analyzed to determine that the aero-engine rolling rod bearing skidding trouble needs removal when the bearing is under light load and at high speed; the aero-engine rolling rod bearing skidding troubleshooting mode is further determined, including bearing selection and bearing assembly control; the bearing is a non-circular rolling bearing, and the bearing assembly control is inner and outer ring eccentric assembly; the bearing assembly is completed according to the troubleshooting mode; and the aero-engine rolling rod bearing skidding troubleshooting is realized. The troubleshooting method provided by the invention has the advantage that the skidding troubleshooting is realized by controlling the surface quality, the assembly quality, the operating load, the auxiliary materials and the cleanliness of the bearing, thereby greatly reducing the mechanical skidding trouble rate to effectively control skidding troubles.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for troubleshooting the slippage of a stick bearing of an aero-engine. Background technique [0002] Aeroengine rolling rod bearing slipping failure refers to the phenomenon of slipping and scratching on the working surface of the bearing after the test run of the aeroengine factory or additional test run. Generally, the fault of the inner ring of the bearing is serious, and the corresponding part of the rolling body changes color, usually showing brown or brown. Such as figure 1 , for bearings with ribs on the inner ring: figure 1 Among them, 1 and 4 are the bearing ribs, 2 is the sliding part, and 3 is the normal raceway; for bearings without ribs in the inner ring: figure 2 Among them, 5 and 8 are bearing slopes, 6 is the sliding part, and 7 is the normal raceway; the sliding position is not fixed, some are close to the middle part of the ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the production process of aero-engines, the problem of slippage of roller bearings has always been difficult to solve due to its complex mechanism, and the failure rate has always been high

[0014] Since the mass-produced aero-engines are all products that have been finalized, the possibility of major structural improvements is small, and the conventional troubleshooting methods can greatly improve the engine and bearings, so the conventional troubleshooting methods are basically not suitable for solving existing problems. Aeroengine bearing slip failure

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