Electromagnetic pulse forming device of plate type part and forming method thereof

Abstract

The invention discloses an electromagnetic pulse forming device of a plate type part. The electromagnetic pulse forming device comprises a supporting frame, a male die, a lifting mechanism, clamping mechanisms and an electromagnetic pulse element, wherein the male die is arranged on the supporting frame, the upper portion of the lifting mechanism is connected with the lower portion of the male die, the number of the clamping mechanisms is two, the clamping mechanisms are symmetrically distributed on the two sides of the male die respectively, clamping elements are arranged at the top ends of the clamping mechanisms, the electromagnetic pulse element is located above the male die, a gap is formed between the electromagnetic pulse element and the male die, and the gap is used for containingplate materials to be formed. The invention further provides a forming method adopting the same. The electromagnetic pulse forming device can effectively reduce the size of the die, is beneficial to reducing the manufacturing cost of the die, and high in forming precision and facilitates accurate forming of large-size plate materials.

Description

technical field [0001] The invention relates to the field of plastic forming of materials, in particular to an electromagnetic pulse forming device for plate-shaped parts and a forming method thereof. Background technique [0002] With the rapid development of high-tech industries such as aerospace, there is an urgent need to use large-scale plate-shaped parts with very significant structural benefits in advanced aircraft, spacecraft, rockets, and missiles to reduce weight, improve the load-carrying capacity limit and range of the carrier, etc. performance. Parts with large size, thin wall, light weight, high precision, high strength, and good fatigue resistance are typical representatives. For example: large storage tank heads of spacecraft, cabin sections of cruise missiles, aircraft and spacecraft hoods, auxiliary fuel tanks and engine casings, etc. [0003] The plastic forming methods of large-size plate-shaped parts mainly include: (1) Using giant presses for strong m...

AI Technical Summary

Problems solved by technology

However, in the process of single-point incremental forming, there are also the following disadvantages: (1) The contact area between the tool head and the sheet is small, and the surrounding materials of the tool head are difficult to flow, so that the sheet shows an overall thinning and deformation process, which limits the forming of the sheet Height; (2) The size of the tool head is small and the rigidity is poor, which is difficult to be suitable for the precise forming of high-hardness and large-thickness sheets; (3) There are obvious scratches on the surface of the sheet, and the sheet forming accuracy is poor

Moreover, in the above-mentioned patents and papers, multiple oil cylinders are used to stretch the sheet metal, but in actual use, the movements of multiple oil cylinders tend to be out of sync.

When the size of the sheet is larger, this out-of-synchronization will cause the sheet to be more inclined after being drawn, which will eventually affect the forming accuracy

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