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Stretch-electromagnetic composite forming device and method for multi-curvature skin parts

An electromagnetic composite and multi-curvature technology, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of increasing the complexity of the forming process and low forming efficiency, so as to avoid wrinkling, reduce discharge energy, and improve forming extreme effect

Active Publication Date: 2021-05-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the repeated forming process needs to constantly adjust the process parameters and the position of the coil, resulting in low forming efficiency, and after each layer of sheet material is drawn, the distance between the sheet material and the mold is large, and the discharge must be precisely controlled parameters to achieve the precise fit of the sheet metal and the mold, which also increases the complexity of the forming process

Method used

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  • Stretch-electromagnetic composite forming device and method for multi-curvature skin parts
  • Stretch-electromagnetic composite forming device and method for multi-curvature skin parts
  • Stretch-electromagnetic composite forming device and method for multi-curvature skin parts

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Embodiment 1

[0040] Such as figure 2 , 3 , 5 and 6, the embodiment of the present invention first discloses a tension-electromagnetic composite forming device for multi-curvature skin parts, including a base plate 1, a mold 2 and a The electromagnetic coil formed by the sheet material 6, the mold 2 is installed on the base plate 1, the electromagnetic coil is arranged above the mold 2, and also includes a vertical oil cylinder 5, a tangential oil cylinder 4 and a chuck 10 for clamping the edge of the sheet material 6. One end of the tangential oil cylinder 4 for tangentially stretching the sheet material 6 is hinged with the base plate 1, and the other end is hinged with the chuck 10, and one end of the vertical oil cylinder 5 for vertically stretching the sheet material 6 is hinged with the base plate 1, and the other end is hinged with the base plate 1. One end is hinged with the chuck 10, so that the sheet material 6 can be covered on the forming surface of the mold 2 through the vert...

Embodiment 2

[0051] In this example, if Figure 4 As shown, the compound forming device is basically the same as the embodiment, the difference is that the electromagnetic coil is composed of a plurality of discrete electromagnetic coils 8 that can be moved along the upper surface of the sheet material 6, and the lower surface of the discrete electromagnetic coil 8 is a plane or is in line with The molding surface of the mold 2 matches the curved surface structure. Therefore, in specific use, it can be completed by discrete electromagnetic coils, thereby avoiding the current problem of manufacturing multiple sets of coils arranged according to the shape, thereby greatly reducing the cost of coil manufacturing.

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Abstract

The invention discloses a stretch-electromagnetic composite forming device and method for multi-curvature skin parts, including a bottom plate, a mold and an electromagnetic coil for forming a sheet on the mold, and the mold is installed on the bottom plate Above, the electromagnetic coil is arranged above the mold, and it is characterized in that it also includes a vertical oil cylinder, a tangential oil cylinder, and a chuck for clamping the edge of the sheet material, and is used for tangentially stretching the sheet material One end of the tangential oil cylinder is hinged to the bottom plate, and the other end is hinged to the chuck. One end of the vertical oil cylinder for vertically stretching the sheet is hinged to the bottom plate, and the other end is hinged to the chuck. hinged. The present invention adopts the composite process of stretching + discharge, and stretching has overcome a certain springback problem, and then eliminates the remaining springback through electromagnetic force, so that the thinning of the sheet can meet the design requirements, and at the same time can greatly reduce the impact on the Electromagnetic forming energy requirements.

Description

technical field [0001] The invention relates to the technical field of plate forming, in particular to a stretch-electromagnetic composite forming device and method for multi-curvature skin parts. Background technique [0002] With the rapid development of high-tech industries such as aerospace, advanced aircraft, spacecraft, rockets, and missiles urgently need to adopt multi-curvature skin components with very significant structural benefits to reduce weight, improve the load-carrying capacity limit and range of the vehicle, etc. performance. In multi-curvature skin parts, different regions of the sheet often experience stress states in different directions. When the tensile stress is too high, the parts will be excessively thinned or even cracked, and when the compressive stress is too high, wrinkles will appear. And skin parts often have obvious springback problems. [0003] At present, high-strength and lightweight materials such as aluminum alloys and titanium alloys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/14B21D37/16
CPCB21D26/14B21D37/16
Inventor 崔晓辉夏雯桢喻海良颜子钦杜志浩肖昂
Owner CENT SOUTH UNIV
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