1. Assembly quality review
The internal vibration of the accessory drive gearbox of the engine in the factory test run is high. Disassemble the engine, and no abnormality is found. After being transferred to work for repair, the test run performance after the second final assembly is qualified and delivered, and the relevant assembly data of the driving bevel gear is qualified.
2. Recheck the machining quality of the bevel drive gear
Recheck the heat treatment process and physical and chemical test results of the bevel drive gear under the inclined transmission of the faulty engine, which meet the requirements of the process specification; The relevant procedures of surface treatment have inspection records, and the results are all qualified; The burn test and magnetic particle test were carried out according to the requirements of the process procedure, and the results were all qualified; The final inspection process was inspected according to the requirements of the process specification, and all dimensions and characteristics were qualified.
3. Quality review of faulty bearing
The production process quality of the inner and outer rings, cages, steel balls and rivets of the same batch of bearings and the production of finished products were checked. The dimensional accuracy and appearance were qualified, the manufacturing process was normal, and all indicators met the standard.