A coordination method for high-precision assembly and interface detection of lifting lugs

Abstract

The invention relates to a lifting lug high-precision assembly and connector detecting and coordinating method. The front end of a machining interstage section is connected with a locating pin hole ofa secondary engine and a locating pin hole of a primary engine. A front lifting lug is installed on a rear skirt of the secondary engine. A rear lifting lug is welded to a front skirt of the primaryengine. The primary engine is in butt joint with the interstage section, and the interstage section is in butt joint with the secondary engine. The position degrees of the front lifting lug and the rear lifting lug are detected. If the position degrees do not meet the requirement, the position of the front lifting lug is adjusted until the installing requirement is met. According to the method, bymeans of the front lifting lug high-precision assembly technology, the multi-connector standard unified coordination technology, the front and rear end face locating pin hole high-precision torsionalangle control technology, and the two-lifting-lug accurate measurement and adaptation technology study, a set of technology methods for ensuring lifting lug assembly and connector detection coordination is made systematically. The problems that existing bin striding section high-precision assembly is difficult, the efficiency is low, and the product quality is instable are solved. The superiorityof bin striding high-precision assembly of the method is further reflected.

Description

technical field [0001] The invention relates to a coordination method for high-precision assembly and interface detection of lifting lugs, belonging to the field of mechanical processing. Background technique [0002] The products launched based on the aircraft platform are connected to the aircraft through the hanger, and the aircraft grabs the front and rear lifting lugs of the drop through the hanger. The front lifting lugs are installed on the front lifting points, and the front lifting points and front stop area are located on the rear skirt of the secondary engine. The rear lifting point and the rear stop area are located on the first-stage engine and welded together with the engine, and the positional relationship is guaranteed by machining after welding. The positional relationship between the front lifting lug and the rear lifting lug is guaranteed by assembly accuracy. The assembly accuracy of the two lifting lugs determines whether the drop and the aircraft can ...

AI Technical Summary

Problems solved by technology

However, at present, there is no corresponding process assurance method for this kind of high-precision cross-cabin assembly at home and abroad, and related similar assembly process schemes do not meet the actual requirements

As a result, the dropped object cannot be successfully hung on the hanger

The general cross-cabin lifting lug assembly process method has a series of problems such as poor product quality and high use cost due to irrational overall thinking, inconsistent benchmark coordination, poor machining accuracy of both ends of the cabin, and improper selection of measuring tools. Therefore, it is urgent to provide a new assembly method to solve the existing problems such as difficulty in high-precision assembly across cabins, low efficiency, and unstable product quality.

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