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Special internal high pressure shaping method for thin-wall welded shell

A thin-walled shell, internal high-pressure forming technology, applied in the field of internal high-pressure shaping, can solve the problems of inability to eliminate the wrinkling defect of the thin-walled shell and the inability to apply the shell, and achieve the elimination of wrinkling defects and easy wall thickness uniformity. Control and improve the effect of orthopedic function

Active Publication Date: 2014-12-10
哈尔滨工达海卓智能成形科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the shape of the existing internal high pressure forming parts has certain limitations, cannot be applied to thin-walled welded shells, and there is a problem that the wrinkling defect caused by welding of thin-walled shells cannot be eliminated , and then provide a thin-walled welded shell special internal high pressure shaping method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0025] Specific embodiment 1: A special internal high pressure shaping method for thin-wall welded shells of this embodiment, the specific method is:

[0026] Step one, unloading,

[0027] According to the size required by the design, cut multiple pieces of thin-walled shells with appropriate lengths, the thin-walled shells being thin-walled plates or thin-walled pipes;

[0028] Step two, blank making,

[0029] The cut multiple pieces of plates or pipes are respectively manufactured into shell blanks or pipe blanks to be reshaped by rolling or stamping. The shape of the manufactured shell blanks or pipe blanks to be reshaped is close to The partial shape of the final formed part;

[0030] Step three, assembly welding,

[0031] Use a welding process to weld each shell blank or pipe blank to be reshaped made in step 2 into a complete shell to be reshaped or pipe to be reshaped;

[0032] Step four, mold clamping, apply initial clamping force

[0033] Before closing the upper mold, put the sh...

specific Embodiment approach 2

[0044] Specific implementation manner 2: In step 3 of this embodiment, the welded shell to be shaped or the shell of the tube to be shaped is a completely closed polyhedron, spherical shell, a semi-closed shell with a port on one side, and two Tubular housing with side ports or multi-side ports. This setting has a wide range of use. The other components and connection relationships are the same as in the first embodiment.

specific Embodiment approach 3

[0045] Specific embodiment 3: In step 5 of this embodiment, the sealing device is a sealing device driven by an oil cylinder or a sealing device with end restraints. This arrangement effectively ensures that various types of shells form a closed space and avoid leakage of liquid media. The other composition and connection relationship are the same as in the second embodiment.

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PUM

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Abstract

The invention discloses a special internal high pressure shaping method for a thin-wall welded shell, which relates to an internal high pressure shaping method. The invention aims to solve the problem that in existing parts made by an internal high pressure forming technology, large section difference hollow components cannot be made by adopting the internal high pressure forming technology which uses pipes as blanks. The internal high pressure shaping method disclosed by the invention particularly comprises the following steps: step 1, blanking; step 2, making a blank; step 3, assembling and welding; step 4, carrying out die spotting; step 5, applying a pressure into a die; step 6, carrying out internal high pressure formation on the die; step 7, taking a part after internal high pressure formation; and step 8, cutting the formed part. In the special internal high pressure shaping method, the shell or pipe part welded by internal high pressure formation is adopted in the die. Compared with a dieless hydraulic forming technology, the special internal high pressure shaping method has the most obvious advantages of ensuring the shape and accuracy of the formed part by adopting the die, greatly enlarging the range of the formed part and improving accuracy of the formed part. The special internal high pressure shaping method is used for shaping the thin-wall welded shell.

Description

Technical field [0001] The invention relates to an internal high pressure shaping method, in particular to a special internal high pressure shaping method for a thin-wall welded shell. Background technique [0002] For thin-wall welded shells or hollow components with large cross-section differences used in aerospace, such as aircraft air intakes, fuel tanks, cabins and other products, the process of forming first and then welding is generally adopted. The basic procedures are: (1) blanking; (2) compression molding; (3) precise forming; (4) assembly and welding. Due to the method of forming first and then welding, welding deformation defects such as wrinkles are likely to occur during the welding process, and it is not easy to eliminate them after welding. How to accurately form thin-wall welded shells and hollow components with large cross-section differences, not only to avoid wrinkling defects in the welding process, but also to effectively ensure the accuracy of the formed p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/021B21D26/033
Inventor 韩聪苑世剑
Owner 哈尔滨工达海卓智能成形科技有限公司