Device for assembling thin film check ring of aero-engine thrust augmentation fuel distributor

Abstract

The invention relates to the technical field of aero-engine thrust augmentation fuel distributor assembling, in particular to a device for assembling a thin film check ring of an aero-engine thrust augmentation fuel distributor. According to the device, a traditional mandrel is replaced with the screw-in pressing of threads, and a fixing base and the shell thread match and are fastened, so that the stability and smoothness of the whole assembly process are realized, the application of a threaded pressing rod is realized, the traditional manual pressing is converted into light torque, and the difficulty of manual direct pressing is solved. Through the application of the device, the one-time assembly success rate of each group of stop rings in the prior art is improved to 100% from less than 30%, the damage of the split shell, a sealing ring and a stop rings is avoided, the rejection rate is reduced to 0, and the production operation efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of assembling an afterburner fuel distributor of an aero-engine, in particular to a device for assembling a diaphragm stop ring of an afterburner fuel distributor of an aero-engine. Background technique [0002] Afterburner fuel distributor is a control accessory widely used on turbofan engines with afterburner, referred to as "plus points". There are three sets of film stop rings for each extra point, which are installed at the bottom of the film module to limit the film module. Generally, the traditional mandrel is used for assembly by pressing with bare hands. The structure of the traditional mandrel press is as follows: figure 1 shown. [0003] In the assembly process of the film stop ring, there are many problems in the assembly process of the traditional mandrel. Since the stop ring is equipped with a sealing ring, the tightness and resistance are large when it is matched with the shell, which makes i...

AI Technical Summary

Problems solved by technology

According to incomplete calculations, the pressure required for each pressing is about 500N ~ 600N, which is close to the equivalent gravity of the weight of an ordinary adult. In the process of pressing with bare hands, it is difficult to ensure the verticality of the stop ring. Pressed into the shell, or the stop ring is crooked and the shell and sealing ring are damaged, resulting in product damage. Once the stop ring is crooked, use a special puller to pull it out, and check the stop ring, rubber ring and shell For the three sets of stop rings, it is time-consuming and labor-intensive to repeatedly perform manual press assembly, and it will also affect the assembly quality of the product and eventually lead to engine failure

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