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Electromagnetic forming device and method of fillet of cylindrical part

A technology of electromagnetic forming and fillet forming, which is applied in the field of plastic forming of materials, can solve the problems that the plastic flow of materials around the fillet cannot be realized, and achieve the effects of large wall thickness reduction rate, improved performance and reduced performance

Active Publication Date: 2017-09-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process cannot achieve the plastic flow of the material around the fillet

Method used

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  • Electromagnetic forming device and method of fillet of cylindrical part
  • Electromagnetic forming device and method of fillet of cylindrical part
  • Electromagnetic forming device and method of fillet of cylindrical part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 , figure 2 and image 3 As shown, an electromagnetic forming device for rounded corners of cylindrical parts of the present invention, the electromagnetic forming device mainly includes a bulging punch 1, a blank holder 2 and a die 3, and the bulging punch 1 matches the die 3 , the binder ring 2 is movably arranged above the die 3, and is used to press the sheet material 9 to be formed on the die 3. The lower side of the binder ring 2 is embedded with an upper booster coil 4, and the die 3 The lower booster coil 5 is embedded at the position corresponding to the upper booster coil 4 on the upper side of the upper side, and the bulging coil 6 is embedded at the bottom fillet of the bulging punch 1, and the bulging coil 6 is embedded along the The rounded corners of the bottom are arranged in an arc shape, and the electromagnetic forming device also includes at least one power supply module for supplying power to the upper booster coil 4 , the lower bo...

Embodiment 2

[0058] Such as Figure 4 , Figure 5 and Figure 6 As shown, an electromagnetic forming device for rounded corners of cylindrical parts of the present invention, the electromagnetic forming device mainly includes a bulging punch 1, a blank holder 2 and a die 3, and the bulging punch 1 matches the die 3 , the binder ring 2 is movably arranged above the die 3, and is used to press the sheet material 9 to be formed on the die 3. The lower side of the binder ring 2 is embedded with an upper booster coil 4, and the die 3 The lower booster coil 5 is embedded at the position corresponding to the upper booster coil 4 on the upper side of the upper side, and the bulging coil 6 is embedded at the bottom fillet of the bulging punch 1, and the bulging coil 6 is embedded along the The rounded corners of the bottom are arranged in an arc shape, and the electromagnetic forming device also includes at least one power supply module for supplying power to the upper booster coil 4 , the lower ...

Embodiment 3

[0063] Such as Figure 7 to Figure 11 As shown, an electromagnetic forming device for rounded corners of cylindrical parts of the present invention, the electromagnetic forming device mainly includes a bulging punch 1, a blank holder 2 and a die 3, and the bulging punch 1 matches the die 3 , the binder ring 2 is movably arranged above the die 3, and is used to press the sheet material 9 to be formed on the die 3. The lower side of the binder ring 2 is embedded with an upper booster coil 4, and the die 3 The lower booster coil 5 is embedded at the position corresponding to the upper booster coil 4 on the upper side of the upper side, and the bulging coil 6 is embedded at the bottom fillet of the bulging punch 1, and the bulging coil 6 is embedded along the The rounded corners of the bottom are arranged in an arc shape, and the electromagnetic forming device also includes at least one power supply module for supplying power to the upper booster coil 4 , the lower booster coil 5 ...

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Abstract

The invention discloses an electromagnetic forming device and method of a fillet of a cylindrical part. The electromagnetic forming device comprises a bulging male die, a blank holder and a female die. The bulging male die is matched with the female die. The blank holder is movably arranged on the upper side of the female die and used for tightly pressing a plate material to be formed to the female die. Upper push assisting coils are embedded into the lower side of the blank holder. Lower push assisting coils are embedded on the upper side of the female die and located at the positions corresponding to the positions of the upper push assisting coils. Bulging coils are embedded into a bottom fillet of the bulging male die and is in an arc shape along the bottom fillet of the bulging male die. The electromagnetic forming device further comprises at least one power module supplying power to the upper push assisting coils, the lower push assisting coils and the bulging coils. The electromagnetic forming device can reduce the wall thickness reduction rate of the fillet area of the part, improve the forming performance of the difficult-to-form portion of the part and achieve small-fillet-radius formation of the cylindrical part.

Description

technical field [0001] The invention relates to the technical field of plastic forming of materials, in particular to an electromagnetic forming device and a forming method for rounded corners of cylindrical parts. Background technique [0002] In traditional stamping forming, the deformation performance of aluminum alloy is poor, which is mainly manifested in two aspects: 1) metal flow is uneven during stamping forming, and defects such as wrinkling and cracking are prone to occur. This results in that the forming limit of aluminum alloy obtained by traditional stamping process is much lower than that of steel; 2) the elastic modulus of aluminum alloy is only 1 / 3 of that of steel. This leads to the springback of the part after unloading is much larger than that of steel, and it is difficult to control the forming accuracy. [0003] In order to improve the formability of aluminum alloy parts, there are currently two main methods: 1) warm forming. Metal materials tend to sh...

Claims

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Application Information

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IPC IPC(8): B21D26/14B21D22/22B21D22/28B21D24/04
CPCB21D22/22B21D22/28B21D24/04B21D26/14
Inventor 崔晓辉喻海良王青山
Owner CENT SOUTH UNIV
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