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Magnetorheological porous soft mold and plate forming device

A magnetorheological and soft mold technology, applied in the field of magnetorheological porous soft molds and sheet metal forming devices, can solve problems such as inhomogeneous forming, increase or decrease the inflow of materials, large adjustable range, and improve deformation. The effect of uniformity

Active Publication Date: 2021-10-19
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a magnetorheological porous soft mold to solve the problem that the elastic modulus of the magnetorheological elastomer in the prior art is the same everywhere, and the Parts with different cavity depths sometimes lead to the technical problem of uneven forming; the purpose of the present invention is also to provide a plate forming device using the magnetorheological porous soft mold

Method used

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  • Magnetorheological porous soft mold and plate forming device
  • Magnetorheological porous soft mold and plate forming device
  • Magnetorheological porous soft mold and plate forming device

Examples

Experimental program
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Effect test

Embodiment 1

[0063] Such as figure 1 As shown, the plate forming device includes a die 3, a coil 4, a magneto-rheological porous soft die 6, a container frame 7, and a plunger 8. The die 3 is located above the frame 7, and the die 3 is directly opposite to the frame 7. Set so that the die cavity of the die 3 and the inner cavity of the container frame 7 are arranged facing each other. When forming, the plate blank 5 is positioned and installed between the die 3 and the frame 7; the magnetorheological porous soft mold 6 and the plunger The head of 8 is located in the inner cavity of the container frame 7, the coil 4 is set on the outer wall of the container frame 7 and the die 3, and the coil 4 is connected to the DC power supply 2 through the current regulator 1. Wherein, the container frame 7 is a ring structure, and the coil 4 is a copper coil.

[0064] In this embodiment, the magnetorheological porous soft mold 6 includes an elastic matrix and magnetic particles 10, the elastic matrix ...

Embodiment 2

[0084] The difference between this embodiment and Embodiment 1 is that in Embodiment 1, the sizes of the pores 11 in the left forming section are the same, the dimensions of the pores 11 in the right forming section are the same, and the porosity in the left forming section is greater than that in the right forming section. Porosity in the forming section. In this example, if Figure 5 As shown, the sizes of the pores in the left forming section are not exactly the same, and the sizes of the pores in the right forming section are not exactly the same, as long as the porosity in the left forming section is greater than that in the right forming section.

Embodiment 3

[0086]The difference between this embodiment and Embodiment 1 is that in Embodiment 1, pores 11 are provided in both the left forming section and the right forming section, and the porosity in the left forming section is greater than that in the right forming section, so that the left The modulus of elasticity of the forming section is smaller than that of the right forming section. In this embodiment, there are pores in the left forming section, and no pores are provided in the right forming section, so that the elastic modulus of the left forming section is smaller than that of the right forming section.

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Abstract

The invention relates to a magnetorheological porous soft mold and a plate forming device. The magnetorheological porous soft mold comprises an elastic base body with pores; and magnetic particles integrally formed in the elastic base body, wherein the magnetic particles are distributed in the elastic base body in a dispersed mode and located outside the pores. The elastic base body comprises at least two forming sections; all the forming sections are internally provided with the pores, and the porosity of at least one forming section is larger than that of the other forming sections, so that the elastic modulus of the forming sections with the large porosity is smaller than that of the forming sections with the small porosity; or at least one forming section is internally provided with the pores and at least one forming section is not internally provided with the pores, so that the elastic modulus of the forming sections with the pores is smaller than that of the forming sections without the pores. Through the design of the structure, when a blank is in complete contact with a special-shaped female mold, the stress of the whole blank is uniform, and the situation that the blank is broken due to the fact that the forming force is too large when a deeper part is formed is avoided.

Description

technical field [0001] The invention relates to a magnetorheological porous soft mold and a plate forming device. Background technique [0002] Special-shaped thin-walled shell parts are a type of plate parts commonly used in fields such as aviation, aerospace, and automobiles that have an urgent need for lightweight equipment. At present, the commonly used methods for processing such parts include rigid convex and concave die stamping forming, soft die forming and so on. Since the forming method of the soft mold is relatively simple compared with the stamping forming method of the rigid punch and die, and can avoid the problem of cracking defects in the forming of the rigid punch and die, it is widely used at present. [0003] The Chinese invention patent with the authorized notification number CN103273644B discloses a sheet material soft mold forming device based on magnetorheological elastomer, including plunger, coil, container frame, magnetorheological elastomer and di...

Claims

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Application Information

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IPC IPC(8): B21D26/14
CPCB21D26/14Y02P10/25
Inventor 相楠田轩赫孙依露李银柱皇涛陈拂晓
Owner HENAN UNIV OF SCI & TECH
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