A device for forming local features of a large curved surface shell and a forming method thereof

Abstract

The invention discloses a large curved surface shell local feature forming device. The large curved surface shell local feature forming device comprises a flexible platform, guide rail fixing seats, asteel channel welding flexible frame, a lifting stand column, a die and an electromagnetic forming mechanism. The large curved surface shell local feature forming device implements large curved surface shell local feature forming through cooperation of electromagnetic forming and a flexible tool. The working procedures of traditional large curved surface shell local feature forming are substantially simplified. The time period cost is reduced, and the die machining cost is greatly reduced. Through the large curved surface shell local feature forming device and forming method, the forming limit of a material can be improved, the working procedures can be simplified, and the machining purpose can be achieved through one-time forming. The forming tool can be simplified. A large press machineis not needed. Only the single-face die corresponding to the local features is needed, and a male die is not needed. The surface quality of a formed part is good without scratches, and the rate of finished products is high.

Description

technical field [0001] The invention relates to the technical field of plastic forming and manufacturing of metal sheets, in particular to a large-scale curved surface shell local feature forming device and a forming method thereof. Background technique [0002] In aerospace vehicles, there are generally forming features such as local bulging, partial turning, and local punching on the parts of large curved shells. The traditional method of forming local features of large curved shells needs to process a set of large Forming tooling, for curved surface parts, the tooling is more complicated, the cost will be higher, and a special press is required. From the perspective of forming results, when the local features that need to be formed are difficult to form, it may not be possible to achieve one-time forming and multiple formings are required. At this time, multiple sets of molds are required to make the forming process more complicated. At the same time, the parts will come...

AI Technical Summary

Problems solved by technology

[0002] In aerospace vehicles, there are generally forming features such as local bulging, partial turning, and local punching on the parts of large curved shells. The traditional method of forming local features of large curved shells needs to process a set of large Forming tooling, for curved surface parts, the tooling is more complicated, the cost will be higher, and a special press is required

From the perspective of forming results, when the local features that need to be formed are difficult to form, it may not be possible to achieve one-time forming and multiple formings are required. At this time, multiple sets of molds are required to make the forming process more complicated.

At the same time, the parts will come into contact with the mold during the forming process, and it is difficult for parts with high surface quality requirements to meet the forming requirements, resulting in low production efficiency, high scrap rate, high cost, and high labor intensity for workers

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