An egg-shaped pressure shell manufacturing device and manufacturing method

Abstract

The invention discloses an egg-shaped pressure-resisting shell manufacturing device and method. The device comprises a supporting device, a pressing die mechanism and a bottom die mechanism. The pressing die mechanism is fixedly installed on the supporting device. The end of the pressing die mechanism is connected with a male die stamping a round plate. The bottom die mechanism comprises a worktable, a die base installed on the worktable and a pair of plate locating mechanisms. The round plate is fixed to the upper surface of the die base through the plate locating mechanisms. The two plate locating mechanisms are located on the two sides of the round plate. A female die is installed below the round plate and is located in the die base. According to the egg-shaped pressure-resisting shell manufacturing device and method, a ball is added in a ring-shaped groove in the opened end of the female die and a flexible jacking mechanism is arranged in the bottom of the female groove so that the quality of the surface of the stamped egg-shaped pressure-resisting shell can be good, and curvature distribution can be even.

Description

technical field [0001] The invention relates to an egg-shaped pressure-resistant shell manufacturing device and a manufacturing method, belonging to the field of pressure-resistant device manufacturing. Background technique [0002] As an important piece of equipment for deep-sea submersibles, pressure hulls play an important role in ensuring the safety of internal personnel and equipment. However, traditional pressure hulls in active service cannot coordinate strength, stability, space utilization, and streamlined indicators at the same time. The invention patent with application number 201510073803.4 proposed a conceptual egg-shaped bionic pressure-resistant shell, and pointed out that the egg-shaped bionic shell can comprehensively coordinate strength, stability, space utilization, streamlined and other functions, and is an excellent bionic shell. Prototype, but does not involve the manufacturing device and method of the egg-shaped pressure shell. As an excellent new typ...

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Problems solved by technology

As an excellent new type of deep-sea pressure-resistant equipment, the engineering application prospect of the egg-shaped pressure hull is broad, but because the large end and the small end of the egg-shaped curve are not completely symmetrical, the conventional single mold pressing method has great limitations

[0003] At present, most molds on the market are divided into convex mold (upper mold) and concave mold (lower mold). Generally, round chamfers or cylindrical rolling bars are placed on the opening end of the concave mold (suitable for flat plate pressing with simple shape) , in order to reduce the unnecessary wear of the metal sheet due to friction during the pressing process, which affects the quality of the sheet after stamping; and a small number of dies are equipped with a rigid and flexible ejector at the bottom. Extruded parts after molding, but only suitable for pressed parts with low surface requirements

The strength and stability of the egg-shaped pressure shell are more sensitive to its own curvature radius. Although the setting of circular chamfers can reduce friction, the sheet still has sliding friction with the die during the stamping process, which will affect the egg-shaped pressure shell. Surface curvature and thickness distribution; rigid flexible ejector mechanism will destroy the radius of curvature and surface quality of the bottom of the egg-shaped pressure shell

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