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A plate forming device and forming method based on multi-stage electromagnetic force sequential loading

An electromagnetic force and timing technology, applied in the field of metal forming manufacturing, can solve the problems of difficult continuous loading, complex forming process, and decrease in electromagnetic force, and achieve the effect of short total time, high forming rate and good mold fit.

Active Publication Date: 2020-09-18
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcoming of this method is that it is difficult to realize the continuous coordinated loading of the quasi-static stamping force (the action time is usually on the order of seconds) and the pulse electromagnetic force (the action time is usually on the order of microseconds or milliseconds), and the two forming methods need to be combined Intermittent loading on the workpiece, resulting in complex forming process and long time-consuming
However, in this method, when the punch is far away from the driving coil, the electromagnetic force it receives will be significantly reduced. In order to achieve a larger forming depth, the driving coil needs to approach the punch downward after one discharge cycle, and then proceed to the next step. discharge cycle, so the entire deep forming process requires multiple discharge cycles to complete, and the overall time required is longer

Method used

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  • A plate forming device and forming method based on multi-stage electromagnetic force sequential loading
  • A plate forming device and forming method based on multi-stage electromagnetic force sequential loading
  • A plate forming device and forming method based on multi-stage electromagnetic force sequential loading

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Embodiment 1

[0041] like figure 1 As shown, a panel forming device based on multi-level electromagnetic force sequential loading includes a die 2 located below the panel 1 to be formed, and a punch 3 located above the panel 1 to be formed and matched with the die 2, A blank holder 4 is provided above the plate to be formed 1, and a first channel 5 for the movement of the punch 3 is provided inside the blank holder 4. The punch 3 includes a punch 6 that cooperates with the die 2 and is fixed on the punch 6. The upper driving piece 7, the driving piece 7 is a reverse concave structure, the driving piece 7 is covered on the punch 6, and the side wall of the first channel 5 in the blank holder 4 is sequentially provided with three driving strong magnetic fields from top to bottom. The driving coils 8 for the downward movement of the sheet 7, each driving coil 8 is connected with a pulse power supply 9 independent of each other, and the pulse power supply 9 is connected with the charging and di...

Embodiment 2

[0049] like Figure 5 As shown, a panel forming device based on multi-level electromagnetic force sequential loading includes a die 2 located below the panel 1 to be formed, and a punch 3 located above the panel 1 to be formed and matched with the die 2, A blank holder 4 is provided above the plate to be formed 1, and a first channel 5 for the movement of the punch 3 is provided inside the blank holder 4. The punch 3 includes a punch 6 that cooperates with the die 2 and is fixed on the punch 6. The upper driving piece 7, the driving piece 7 is a reverse concave structure, the driving piece 7 is covered on the punch 6, and the side wall of the first channel 5 in the blank holder 4 is sequentially provided with two drivers that generate a driving strong magnetic field from top to bottom. The driving coil 8 that the driving piece 7 moves downward, one of the driving coils 8 is located on the upper end surface of the inner side of the binder ring 4, and the other driving coil 8 is...

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Abstract

The invention relates to the field of metal forming manufacturing, discloses a plate forming device based on multistage electromagnetic timing sequence loading, and further discloses a forming methodof the plate forming device based on multistage electromagnetic timing sequence loading. The plate forming device comprises a female die located on the lower part of a to-be-formed plate, and furthercomprises a male die which is located on the upper part of the to-be-formed plate and matched with the female die; a blank holder is arranged on the upper part of the to-be-formed plate; a first channel allowing the male die to move is arranged in the blank holder; the male die comprises a punch matched with the female die and a driving sheet fixed to the upper part of the punch; and two or more driving coils which generate a driving strong magnetic field to drive the driving sheet to downwards move are sequentially arranged on the side wall of the first channel in the blank holder from top tobottom. According to the plate forming device based on multistage electromagnetic timing sequence loading, and the forming method, electromagnetic forming has the characteristics of high forming rate, short total forming time, more types of formed metal materials, large forming depth and good fittability.

Description

technical field [0001] The invention relates to the field of metal forming and manufacturing, in particular to a plate forming device and forming method based on multi-stage electromagnetic force sequential loading. Background technique [0002] Electromagnetic forming is a forming processing method that uses the eddy current induced by the metal workpiece to be formed in the alternating magnetic field to interact with the magnetic field to generate electromagnetic force to act on the workpiece to deform the workpiece. Compared with the traditional quasi-static forming method, electromagnetic forming has the characteristics of high forming rate, which can significantly improve the forming performance of materials and increase the forming limit. Therefore, electromagnetic forming technology has broad application prospects in the fields of automobile and aerospace manufacturing. [0003] The traditional electromagnetic forming method is the electromagnetic direct forming meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/14B21D19/08
CPCB21D19/08B21D26/14
Inventor 张骁马霁旻王晓光赵云
Owner HUBEI UNIV OF TECH