Flexible positioning device for assembling and welding pipelines

Abstract

The invention relates to a flexible positioning device for assembling and welding pipelines and belongs to the technical field of assembling and welding of pipe parts. A flange positioning assembly, a pipe joint positioning assembly, a pipe fitting bearing assembly and a telescope-feed positioning assembly are all arranged on a foundation plate, and adapting seats of the assemblies are connected with one another through positioning keys and T-shaped grooves. According to the flexible positioning device for assembling and welding the pipelines, by means of matching of the assemblies, accuracy of assembling and welding pipe fittings is improved, shape correction of the pipe fittings during assembling is reduced, manufacture qualities and reliabilities of the pipe fittings are improved, the assemblies can be adjusted, and requirements for assembling and welding the pipe fittings with different sizes and shapes can be well met by adjusting positions and heights of the assemblies when users are confronted with the pipe fittings with different sizes and shapes, so that the applicability of the flexible positioning device is greatly enhanced; the flexible positioning device can be continuously recycled and greatly reduce usage and manufacture costs; defects that medium frames in prior art are low in positioning accuracy, poor in rigidity, easy to deform during using, and long in manufacture period can be overcome.

Description

technical field [0001] The invention belongs to the technical field of assembly and welding of pipe parts, in particular to a flexible positioning device for assembly and welding of pipelines. Background technique [0002] Pipeline components (pipe fittings) play an important role in aero-engines, and are usually welded by branch pipes, pipe joints and flanges. The relative position between them is difficult to express directly with data. [0003] At present, aero-engine ducts still need the help of metal prototypes and jigs to determine the final tube shape, and jigs are still the main tooling for domestic duct manufacturing applications. Since a set of jigs can only be used for one assembly object, it has led to difficulties in the preparation of duct production. In the process, a large number of assembly jigs need to be manufactured; however, the existing jigs have many disadvantages, such as low positioning accuracy, poor rigidity, and easy deformation during use, which...

AI Technical Summary

Problems solved by technology

[0003] At present, aero-engine ducts still need the help of metal prototypes and jigs to determine the final tube shape, and jigs are still the main tooling for domestic duct manufacturing applications. Since a set of jigs can only be used for one assembly object, it has led to difficulties in the preparation of duct production. In the process, a large number of assembly jigs need to be manufactured; however, the existing jigs have many disadvantages, such as low positioning accuracy, poor rigidity, and easy deformation during use, which are increasingly unsuitable for the digitalization and high-precision development of engines. Need, and its manufacturing cycle is long, the manufacturing cost is high, and the workload on storage, storage and maintenance is heavy

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