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Forming method of pipe fitting with local large characteristic

A technology for local features and pipe fittings, which is applied in the field of forming pipe fittings with local large features, and can solve the problems of uneven wall thickness reduction, cracking, and insufficient flow of pipe fitting materials.

Pending Publication Date: 2022-04-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing processing of specific local large features of pipe fittings, the method of liquid-filled tube expansion is usually used, and the forming mold is designed according to the shape of specific local features; Insufficient material flow of the rear pipe fittings, uneven overall wall thickness reduction or even cracking, low forming quality and forming accuracy

Method used

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  • Forming method of pipe fitting with local large characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The invention provides a method for forming a pipe with local large features, which specifically includes the steps of:

[0029] S1: Select or prefabricate the sheet;

[0030] S2: determining the shape and size of the first local feature to be formed on the sheet;

[0031] S3: Stamping the sheet material to form a stamped transition plate with the first partial feature;

[0032] S4: Bending the stamped transition plate so that opposite ends on both sides approach and join each other to form a final solid formed pipe with both ends open and hollow with local large features; the local large features are formed by the first A local feature is at least deformed to accommodate the bending of the stamped transition plate.

[0033] The first partial feature is formed by pre-stamping in the sheet material, and then the stamped transition plate is bent to join the opposite ends of the stamped transition plate to form a final solid formed pipe with local large features, and the...

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Abstract

The invention relates to the technical field of metal pipe fitting forming, and particularly discloses a forming method of a pipe fitting with local large characteristics. Comprising the steps that S1, plate materials are selected or prefabricated; s2, determining the shape and size of a first local feature to be formed on the plate; s3, the plate is stamped to form a stamped transition plate with a first local feature; s4, the stamping transition plate is bent so that the two opposite side ends can be close to each other and connected to form a hollow final solid forming pipe with the two open ends and the local large characteristic; and the local large feature is formed by deformation of the first local feature at least adapting to bending of the stamping transition plate. According to the forming method for the pipe fitting with the local large characteristic, the forming quality of the pipe fitting with the local large characteristic is improved.

Description

technical field [0001] The invention relates to the technical field of forming metal pipe fittings, in particular to a forming method for pipe fittings with local large features. Background technique [0002] In the existing processing of specific local large features of pipe fittings, the method of liquid-filled tube expansion is usually used, and the forming mold is designed according to the shape of specific local features; Insufficient material flow of the rear pipe fittings, uneven overall wall thickness reduction or even cracking, low forming quality and forming accuracy. Contents of the invention [0003] The purpose of the present invention is to provide a forming method for pipe fittings with local large features, so as to solve the above-mentioned problems in the prior art, and improve the forming quality and forming accuracy of pipe parts with local large features. [0004] To achieve the above object, the present invention provides the following scheme: [00...

Claims

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Application Information

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IPC IPC(8): B21D51/10B21D35/00B21D39/00
Inventor 郎利辉矫志辉
Owner BEIHANG UNIV
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