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Forming method of hollow component

A hollow component and final forming technology, which is applied in the forming field of hollow components to ensure the uniformity of wall thickness, dense organization and reliable operation.

Inactive Publication Date: 2016-12-14
李明
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned defects in the prior art, to provide a method for forming a hollow member. By setting an anti-deformation mechanism in the mold, the repeated and cumulative utilization of the petal shape can be realized. While eliminating the constant rolling effect of friction, It reduces the forming pressure, avoids the occurrence of cracking defects, and improves the uniformity of wall thickness to meet the high-precision requirements for shape accuracy and wall thickness uniformity of such components in aerospace and other fields

Method used

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Embodiment Construction

[0041] A method for forming a hollow member, the technical solution of which is to include the following steps:

[0042] Step 1: Die preparation, first design the lower die 2, the upper die 5, the left punch 4 and the right punch 7 according to the needs of the shape of the components. The lower die 2 is connected to the lower table 1 of the press, the upper die 5 is connected to the upper slider 6 of the press, and a check valve 17 is installed between the left punch 4 and the high pressure source 16;

[0043] Step 2: Set up anti-deformation mechanism A (9), anti-deformation mechanism B (11), anti-deformation mechanism C (13), and anti-deformation mechanism D (15) on the mold. One end of the anti-deformation mechanism faces the mold cavity, and one end extends. Out of the mold cavity, and connected with the ejector mechanism 8, 10, 12, 14 of the press. The main point is the width of the anti-deformation mechanism a 1 about 0.1 a ~0.3 a ,high b 1 about 0.1b ~0.3 b ,...

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Abstract

The invention relates to a forming method of a hollow component. According to the technical scheme, the forming method of the hollow component comprises the following steps: step one, preparing a die, adding four anti-deformation structures on the die, and mounting a one-way valve on a punch; step two, placing an initial tube blank in a cavity of the die, closing the die and sealing ends; step three, filling a fluid medium inside the tube blank; step four, enabling the anti-deformation structures to move oppositely; and step five, retracting the anti-deformation structures to initial positions, repeating the step four and the step five to form a component in the required shape, relieving internal fluid pressure, opening the die, and taking out a part. The anti-deformation structures are arranged in the die, so that a petal shape is repeatedly and accumulatively used, while the rolling effect of friction is eliminated, forming pressure is reduced, the breakage defect is avoided, and uniformity of the wall thickness is improved.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a forming method of a hollow member. Background technique [0002] At present, hollow members with rectangular cross-section are the ideal load-bearing structure. For bending and torsional loads, the hollow members with rectangular cross-section have the least failure mode, which can effectively balance the failure problems of strength and stability, and then obtain the maximum ultimate bending and shear resistance. Bearing capacity, therefore, hollow members with rectangular section are important structural forms of aviation, aerospace and automotive equipment. [0003] In the current manufacturing process of hollow components with rectangular cross-section, they are generally formed by means of stamping-welding and internal high-pressure direct forming. The first method introduces two longitudinal welds, which destroy the structural integrity and cause welding thermal de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/033B21D26/047
CPCB21D26/033B21D26/047
Inventor 不公告发明人
Owner 李明
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