Multi-wave tube hydraulic bulging forming method

Abstract

The invention provides a multi-wave tube hydraulic bulging forming device and method, comprising a forming cylinder (1), a forming flange (2), a water injection die sealing ring (3), a water injection die head (4), and a piston sealing ring (5), mold body, stepping cylinder piston rod (7), gasket (8); the forming cylinder (1) is connected to the forming flange (2), and the forming flange (2) is connected to one end of the mold body , the other end of the die body is connected to the gasket (8), one end of the water injection die (4) is connected to the forming cylinder (1), the other end of the water injection die (4) is connected to the stepping cylinder piston rod (7), and the water injection die ( 4) A piston sealing ring (5) is provided at the connection with the stepping cylinder piston rod (7), the water injection die head (4) and the stepping cylinder piston rod (7) are located in the cavity of the mold body, and the water injection mold The head (4) is circumferentially connected with the sealing ring (3) of the water injection die head. The invention can realize integral forming of multiple corrugations, improves the forming quality of the multi-wave tube, and reduces the development cost.

Description

technical field [0001] The invention relates to the hydroforming technology of metal materials, in particular to a multi-wave tube hydraulic bulging forming device and method. Background technique [0002] With the progress of aerospace industry processing and manufacturing level, aerospace products are gradually developing in the direction of reducing the weight of parts and improving product reliability. In the rocket body structure of the Long March launch vehicle tanks, variable cross-section special-shaped components are often used. Among them, the multi-wave tubes in the launch vehicle tanks are composed of multi-section corrugated tubes and flanges, which mainly serve to transport oxidants and isolate The role of the fuel agent, because the part bears the internal pressure inside the storage tank during the flight of the launch vehicle and affects the sealing of the storage tank, it plays a very critical role in the rocket flight process. [0003] As aerospace vehicl...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of high labor intensity and difficulty in ensuring quality consistency in the corrugated tube forming process, the present invention designs a multi-wave tube hydraulic bulging forming device, thereby improving the forming quality of the multi-wave tube, achieving stable process quality, and effectively reducing the number of operators. Labor intensity, the purpose of improving the product pass rate

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