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Electrohydraulic forming method for formed sheet metal blank

A technology for forming blanks and blanks, which is applied in the field of electro-hydraulic forming of formed sheet metal blanks, and can solve problems such as increased blank thickness, insufficient formability, and difficulty in welding and forming panels

Inactive Publication Date: 2009-11-11
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insufficient formability makes it difficult to weld formed panels from several parts or increases the thickness of the stock used to form panels

Method used

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  • Electrohydraulic forming method for formed sheet metal blank
  • Electrohydraulic forming method for formed sheet metal blank
  • Electrohydraulic forming method for formed sheet metal blank

Examples

Experimental program
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Embodiment Construction

[0013] figure 1 An electrohydraulic forming (EHF) tool in accordance with one non-limiting aspect of the invention is shown. The tool 10 may include a container 12 provided with a cavity 14 . At least one pair of electrodes 16 , 18 may extend into cavity 14 . The cavity 14 may contain a liquid such as but not limited to water. The electrodes 16, 18 may generate an electrical potential sufficient to cause a shock wave. The shock wave can propagate through the liquid and deliver a pressure pulse to the blank 20 . Preferably, the shock wave generates a force sufficient to deform the blank 20 against the forming surface 22 formed by the cavity within the mold 24 .

[0014] A binder 26 forming a binder cavity 28 may optionally be included between the mold 24 and the container 12 . Blanket 26 may be configured to facilitate placement and orientation of blank 20 relative to container 12 and mold 24 . Corresponding sealing grooves 36 may be provided between the container 12 , bi...

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PUM

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Abstract

The invention discloses an electrohydraulic forming method for formed sheet metal blank. The method includes pressing against the die blank by pressure generated from the liquid filled container; eliminating the pressure from the tool; generating a shockwave within the fluid for force generation so that the blank abuts against the die.

Description

technical field [0001] The invention relates to an electro-hydraulic forming method for forming a sheet metal blank by an electro-hydraulic forming (EHF) operation. Background technique [0002] Aluminum alloys and ultra-high-strength steels are becoming more common as materials used in automotive body structures. A major obstacle to expanding the use of these materials is the inherent lack of formability of these materials relative to mild steel. The introduction of lightweight materials such as ultra-high-strength steel (AHSS) and aluminum alloys (AA) into mass-produced automotive applications (high-volume automotive) is critical to reducing vehicle weight and leading to improved fuel economy and reduced tailpipe emissions . One of the most important obstacles in introducing lightweight materials into high-volume production (g) is the stamping problem and the lack of material formability of AHSS and AA itself. [0003] The application of AHSS and AA in automotive produc...

Claims

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Application Information

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IPC IPC(8): B21D26/06B21D26/12
CPCB21D26/027B21D26/00B21D26/12B21D26/021Y10T29/49806Y10T29/49803
Inventor 谢尔盖·费多罗维奇·高洛瓦申科艾伦·约翰·吉拉德道格拉斯·皮卡尔安德烈·M·伊里尼奇
Owner FORD GLOBAL TECH LLC
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