Warm electromagnetic forming device and method of skin piece

A technology for electromagnetic forming and skin parts, which is applied in the field of sheet metal forming, can solve problems such as the forming of skin parts that are not suitable for double curvature or multi-curvature, and achieves less energy required for equipment, high forming efficiency, and good forming accuracy. Effect

Active Publication Date: 2018-11-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent is aimed at rotating parts, and is not suitable for forming skin parts with double or multiple curvatures.

Method used

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  • Warm electromagnetic forming device and method of skin piece
  • Warm electromagnetic forming device and method of skin piece
  • Warm electromagnetic forming device and method of skin piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 1 to Figure 7 As shown, the warm electromagnetic forming device for skin parts of this embodiment includes a base plate 1, a mold 2, a sheet material 3 and a splint assembly 4 for fixing and clamping the sheet material 3. The splint assembly 4 is arranged on the base plate 1, The plate 3 is fixedly clamped between the splint components 4, and also includes a discharge coil 5 and a heating element 6 for heating the plate 3, the discharge coil 5 is arranged above the plate 3, and the heating element 6 is arranged on the plate 3 sides. The combination of stretching and electromagnetic forming does not require the complex stretching structure and complicated process required by traditional stretching, and can reduce the requirements of equipment for discharge energy and coil strength. The heating element can increase the local temperature of the sheet metal, which is conducive to plastic deformation. , not easy to rebound, easy to control the forming accura...

Embodiment 2

[0054] Such as Figure 8 As shown, the warm electromagnetic forming device of the skin part of this embodiment is basically the same as that of Embodiment 1, the main difference is that in this embodiment, the mold 2 is a concave mold with a single curved surface, and during the forming process, The blank 3 flows into the die and adheres to the forming surface of the die.

[0055] In other embodiments, the forming surface of the mold 2 may be multi-curved.

[0056] In other embodiments, the heating element 6 can also be a thermal radiation heating device or an electromagnetic induction heating device.

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Abstract

The invention discloses a warm electromagnetic forming device of a skin piece. The warm electromagnetic forming device comprises a base plate, a die, a plate material and clamping plate assemblies used for fixedly clamping the plate material, the clamping plate assemblies are arranged on the base plate, the plate material is fixedly clamped between the clamping plate assemblies, the warm electromagnetic forming device further comprises a discharge coil and heating pieces used for heating the plate material, the discharge coil is arranged above the plate material, and the heating pieces are arranged on the two sides of the plate material. The invention further discloses a warm electromagnetic forming method which comprises the steps of plate material fixing, plate material stretch forming,plate material heating, electromagnetic forming and the like; and complete attachment of the plate material and a forming face of a mold is achieved by repeatedly executing plate material stretch forming, heating and electromagnetic forming. The warm electromagnetic forming device has the advantages that the forming accuracy is high, the forming quality is good, the forming efficiency is high, andthe requirement of the equipment for the discharge energy and the coil strengthen is low.

Description

technical field [0001] The invention belongs to the technical field of sheet metal forming, and in particular relates to a thermal electromagnetic forming device and method for skin parts. Background technique [0002] The skin is a key part of the aerodynamic shape of the aircraft, and its forming quality is directly related to the aerodynamic performance and service life of the aircraft. The skin is mainly manufactured by stretch forming process. On the CNC skin stretching machine, tension and bending moment are applied to the jaws at both ends, so that the sheet slowly fits the mold surface. In the skin stretch forming method, the tension is mainly provided by the downward movement of the material clamping frame, so that the skin wool wraps a large area of ​​the lower model surface tightly. After that, in order to reduce springback after forming, continue to apply a small amount of supplementary pull. Therefore, the process parameters of the whole forming process are co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/14B21D37/16
CPCB21D26/14B21D37/16
Inventor 崔晓辉张志武喻海良
Owner CENT SOUTH UNIV
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