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Method and mould arrangement for explosion forming

A technology of forming molds and explosive forming, applied in metal processing equipment and other directions, can solve problems such as expensive and time-consuming

Active Publication Date: 2010-01-06
COSMA ENG EURO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method is expensive and time-consuming

Method used

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  • Method and mould arrangement for explosion forming
  • Method and mould arrangement for explosion forming
  • Method and mould arrangement for explosion forming

Examples

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Embodiment Construction

[0034] figure 1 Shown is a perspective view of a mold arrangement 1 according to a first embodiment of the invention. In this exemplary embodiment, the tool arrangement 1 has a shaping tool 2 and an ignition mechanism 3 .

[0035] The molding die 2 is composed of several parts. It consists of a plurality of mold blocks 4 which can be combined to form a forming mold 2 . In the closed state, that is to say when all the forming tool pieces 4 are combined, a tool cavity 14 is formed inside the forming tool 2 which shows the contour of the finished workpiece. In addition, in the contour of forming die 2, there may also be trimming or separating edge 29 and punching die 30, so that the workpiece is cut while explosively forming, as Figures 3 to 5 shown. The tool cavity 14 is at the same time a receiving space 15 for the forming tool 2 . According to the invention the receiving space 15 is at least partially filled with a liquid, as described below Figure 3 to Figure 5 descri...

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Abstract

The invention is intended to improve a mould arrangement (1) and a method for the explosion forming of a workpiece (12) by means of gas explosion, in which the workpiece is arranged in a receiving space (15) of a forming mould (2), the receiving space being filled at least partially with liquid (26) and the explosion being triggered by igniting an explosive gas mixture (23), to the extent that the mould arrangement and the method are simplified and suitable for mass production. This object is achieved by a mould arrangement and a method for the explosion forming of a workpiece by means of gas explosion in which the workpiece is arranged in a receiving space of a forming mould (2), wherein the receiving space is at least partially filled with liquid and the explosion is triggered by igniting an explosive gas mixture in which the exposive gas mixture is at least partially provided over the surface of the liquid (22) before the ignition.

Description

technical field [0001] The invention relates to a method of explosive forming having the features of the preamble of claim 1 and a mold arrangement for explosive forming having the features of the preamble of claim 13 . Background technique [0002] In a method of the type described in CH 409 831, the workpiece to be formed, such as a pipe, is placed in a mold and filled with water. A device comprising multiple electrodes for generating and igniting oxyhydrogen detonation gas is housed in a flexible container, such as a plastic bag. The plastic bag is placed inside the workpiece and submerged in water until the bag is completely submerged. By activating two electrodes, a hydrogen-oxygen detonation gas is generated underwater, which collects in a bag surrounding the gas. By igniting the oxyhydrogen detonation gas produced in the bag by means of a spark plug or a glowing filament, a pressure wave is created underwater which presses the workpiece into the mold. But this meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/08
CPCB21D26/08Y10S72/706
Inventor 亚历山大·扎克西塔拉玛·科塔吉里安德烈亚斯·施特兰茨菲利普·施特格尔
Owner COSMA ENG EURO AG
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