A fixture for welding a plurality of different angular flanges

By designing a combined structure for welding multiple flange fixtures with different angles, the deformation and accuracy problems caused by thermal stress during the welding process are solved, achieving efficient and low-cost welding accuracy control, which is suitable for positioning welding of multi-angle branch pipes/flange pipes.

CN224526349UActive Publication Date: 2026-07-21BEIJING FUCHUANG PRECISION SEMICON CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING FUCHUANG PRECISION SEMICON CO LTD
Filing Date
2025-07-28
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

During the welding process, due to the shrinkage and deformation of individual parts caused by welding thermal stress, as well as the problem of exceeding the tolerance of dimensions and form and position, traditional tooling has low positioning accuracy and low efficiency, making it difficult to meet the requirements of high-precision welding.

Method used

Design a fixture for welding multiple flanges with different angles, including a positioning base plate, connecting block, limiting post, limiting base plate and pressure plate, which are connected by positioning pins and screws to ensure accurate positioning and fixing of flanges. The fixture uses a combination of AL6061, 304 stainless steel and P20 materials to achieve rapid adjustment and stable support.

Benefits of technology

It improves welding accuracy and efficiency, reduces thermal stress deformation, lowers tooling costs, is suitable for welding branch pipes/flanges of different diameters and angles, reduces the risk of rework, and reduces the labor intensity of workers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of welding, especially a kind of for welding multiple different angular flange jigs, for the size of welding single piece branch pipe and the angle difference of flange end face, and in order to reduce tooling cost, gap fit design is carried out according to the size of thin-walled tube diameter between connecting column short end and flange end face, and the installation of flange pipe and parts is determined by the attachment of connecting block and limiting bottom plate. Positioning pin connection is used between basic positioning bottom plate, limiting bottom plate and parts, and screw locking press plate is pressed. It is ensured that the position and angle of corresponding components are all up to the requirements of part drawing when welding using this jig;And the tooling has the advantages of quick adjustment, stable support, and assembly, inspection and shape correction in one. Through the above-mentioned premise, each accessory is designed and assembled together for use.
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