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

A thin-walled shell and internal high-pressure forming technology, which is applied in the field of internal high-pressure shaping, can solve the problems of hollow components that cannot be used, large cross-section differences, etc., and achieve the effects of expanding the range, solving deformation, and high dimensional accuracy

Active Publication Date: 2013-03-13
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 parts manufactured by the existing internal high pressure forming technology have hollow components with large cross-sectional differences, which cannot be manufactured by the internal high pressure forming technology using pipes as blanks, and further provide a thin-walled welded shell. internal high pressure shaping method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0025] Specific implementation mode 1: In this implementation mode, a special internal high-pressure shaping method for a thin-walled welded shell, the specific method is as follows:

[0026] Step 1, unloading,

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

[0028] Step two, blank making,

[0029] The cut sheets or pipes are manufactured into shell blanks or pipe fitting blanks to be shaped respectively by rolling or stamping forming process, and the manufactured shell blanks or pipe fitting blanks to be shaped have a shape close to The local shape of the final formed part;

[0030] Step 3, assembly and welding,

[0031] Welding each shell blank or pipe fitting blank to be shaped made in step 2 into a complete shell or pipe fitting to be shaped by welding process;

[0032] Step 4. Clamp the mold and apply the initial clamping for...

specific Embodiment approach 2

[0044] Specific embodiment two: the shell to be shaped or the shell to be shaped after welding in step three of this embodiment is a completely closed polyhedron, spherical shell, a semi-closed shell with one side port, and a shell with two ports. Tubular housing with side ports or multiple side ports. With such a setting, it can be used in a wide range. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0045] Embodiment 3: The sealing device in step 5 of this embodiment is a sealing device driven by an oil cylinder or a sealing device constrained by an end. Such setting effectively ensures that various types of shells form a closed space and avoids leakage of liquid medium. Other components and connections are the same as those 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-walled welded shell. Background technique [0002] For thin-walled welded shells or hollow components with large cross-section differences used in aerospace, such as air intakes, fuel tanks, cabins and other products of aircraft, the process of forming first and then welding is generally adopted. The basic process is: (1) blanking; (2) molding; (3) precise forming; (4) assembly and welding. Due to the way of forming first and then welding, it is easy to have welding deformation defects such as wrinkles during the welding process, and it is not easy to eliminate after welding. How to accurately form thin-walled welded shells and large-section differential hollow members, not only to avoid wrinkling defects during the welding process, but also to effectively ensure the accuracy of the formed parts, is the main pr...

Claims

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Application Information

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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