Assembling and positioning structure of main combustion hole bush on flame tube

Abstract

The invention discloses an assembling and positioning structure of a main combustion hole bush on a flame tube. The assembling and positioning structure involves the main combustion hole bush and theflame tube, wherein a circle of hole is formed in the side surface of the flame tube, the main combustion hole bush is arranged in the hole, the main combustion hole bush is C-shaped, an inner clamping plate and an outer clamping plate of a positioning clamp clamping part are clamped on the inner wall surface and the outer wall surface of the flame tube respectively, the outer clamping plate is provided with a positioning pin extending to the hole, the width of the positioning pin is the same as the width of a C-shaped notch of the main combustion hole bush, and the axis of the positioning pinand the axis of the flame tube are located on the same plane. The self-made assembling and positioning device is simple and practical. The axial position A of the notch of the main combustion hole bush is extracted, and the axial position A of the bush notch is ensured to be perpendicular to the large-head end surface B of the part during assembly. The angle position of the main combustion hole bush notch is fixed, the assembly is stable, the assembly consistency is high, the assembly welding quality of the part is improved, and the machining quality is stabilized.

Description

technical field [0001] The invention belongs to the field of assembly and processing, and in particular relates to an assembly and positioning device for a main combustion hole bush on a sheet metal part with complex profiles. Background technique [0002] Such as figure 1 As shown, in the process of processing the flame tube of a certain type of aero-engine, it is necessary to assemble and weld the main combustion hole liner on its part 1. When assembling the main combustion hole bushing, it is necessary to ensure that the notch of the bushing is axially consistent with the big end of the part. More than 20 main combustion hole bushings need to be welded on the circumference of part 1. The assembly quantity is large and the processing cycle is long. The assembly accuracy of the main combustion hole liner will affect the flow rate and flow stability of the gas flow in the combustion process of the aeroengine, as well as the consistency of the state of each liner on the circ...

AI Technical Summary

Problems solved by technology

Considering the quality of assembly and processing, manual scribing is used for assembly processing, the parts are complex and irregular, and the error of manual scribing is large. If manual assembly is used, visual inspection and scribing position will cause secondary assembly errors. , the assembly error of the slot position of the part is large, which will cause more than 20 bushings to be assembled and welded, the position of the bushing slot deviates greatly, and the axial consistency of the slot is poor

From the perspective of processing efficiency, due to the large number of bushes that need to be assembled and welded, the workload is very large, resulting in a very long processing cycle. According to the on-site processing conditions, it takes more than 8 hours to assemble and weld the main combustion hole bushing of a flame tube , a sheet metal worker is needed for scribing, assembly and correction, and a welder is needed for positioning

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