High-strength aluminum alloy scalloped petal side hole electromagnetic flanging device and method

Abstract

The invention discloses a high-strength aluminum alloy scalloped segment side hole electromagnetic flanging device and method.The high-strength aluminum alloy scalloped segment side hole electromagnetic flanging device comprises a lower positioning base, a supporting frame, an upper positioning base, a bottom plate and a scalloped segment side hole flanging die, the lower positioning base comprises a lower positioning stand column, a lining a arranged in a mounting hole of the lower positioning stand column and a lower positioning pin arranged in the lining a; the upper positioning base comprises an upper positioning stand column, a lining b arranged in an upper positioning stand column mounting hole and an upper positioning plug pin arranged in the lining b. The supporting frame, the lower positioning stand column and the upper positioning stand column are arranged on the bottom plate. The invention further discloses a flanging method of the high-strength aluminum alloy scalloped petal side hole electromagnetic flanging device. The electromagnetic forming scalloped segment side hole flanging technical method is adopted to replace traditional large hydraulic system die hole flanging, so that large-table-board and large-tonnage liquid equipment is not used, the equipment, the process and the die are simplified, and the scalloped segment side hole flanging manufacturing quality and efficiency are improved.

Description

technical field [0001] The invention belongs to the field of equipment manufacturing, and relates to a high-strength aluminum alloy melon flap side hole electromagnetic flanging device and method. Background technique [0002] With the development of aerospace industry, higher requirements are put forward for the performance of aerospace vehicles, which brings many new challenges to the manufacturing process. In the rocket propellant storage tank and other components, the bottom of the ellipsoid box is composed of a ring, a fork ring and a top cover, and the ring is welded by eight melon petals. The melon petal is a large thin-walled part with an ellipsoid shape. In order to facilitate the welding between the pipeline and the box body and ensure the welding quality, it is necessary to make a flanging hole on the melon petal. The parts of the melon petals are large and complex, and the axial direction of the turning hole is consistent with the axial direction of the tank. U...

AI Technical Summary

Problems solved by technology

The traditional melon flap side hole flanging process requires complex tooling, which is prone to wrinkles and cracks and other defects. The qualified rate of products is low.

[0003] Chinese patent CN207508048U discloses a Ф3350mm ellipsoid melon petal normal hole convex hole mold, the mold is used to mechanically complete the normal phase convex hole of the side hole of the melon petal, the mechanical convex hole needs to be replaced many times to form the convex hole, the efficiency is low and easy Crack

Using the existing technology, not only the process is complicated, but also multiple sets of tooling and molds are required, and the processing cost is expensive

In order to avoid cracking, it is often necessary to form multiple times in production, and the intermediate process needs to be polished, trimmed and annealed. The manufacturing process is quite complicated, resulting in low production efficiency, high cost and high labor intensity.

In order to meet the flange forming requirements of the melon flap side hole, the overall structural part needs to be formed in the annealed state, leaving enough plastic forming space and time for the forming of the side hole area, and the entire process cannot be optimized. At the same time, the melon flap Assembling and debugging the hydraulic press up and down, resulting in long process flow, time-consuming and high cost

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