Method for machining bolt holes in hanging subassembly of aircraft engine by using numerical control equipment
An aircraft engine and numerical control equipment technology, which is applied in the field of numerical control machining method preparation, can solve the problems of difficult drilling of connecting bolt holes, high labor intensity, low assembly efficiency, etc. The effect of improving the degree of assembly automation
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[0037] It is applied to the IPS engine suspension of C919 large passenger aircraft.
[0038] The method of the invention is adopted for the engine suspension of the C919 large passenger aircraft, so that the engine duct has better aerodynamic characteristics, can effectively reduce the fuel consumption of the engine, and serves as the biggest bright spot of the C919 aircraft. But also because of this feature, the central box section integrates the engine nacelle anti-thrust slide rail, which makes the box section structure more complex, and the part size is thicker. The average thickness is 25mm, and the local position reaches 45mm. It is difficult to process with traditional assembly methods, and the assembly cycle is long, which cannot meet the delivery needs of customers.
[0039] After adopting this method on the first IPS box section test piece, the cycle of hole making is shortened by half, and the processing quality is stable and reliable.
[0040] This method is also ...
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