Forming method of special-shaped pipe end and special-shaped clamping mold used

Abstract

The invention discloses a special pipe end forming method. The special pipe end forming method orderly comprises the steps of: (1) bending a to-be-processed end of a pipeline piece into a required shape; (2) putting the bent end into a special clamping mould with a pipeline chamber to be clamped; and (3) carrying out the pipe end forming processing on the end with the pipe end forming method. According to the pipe end forming method disclosed by the invention, the end part of the pipeline piece is firstly bent, is then clamped by the special clamping mould, and is finally formed by a pipe end forming machine. The pipe end forming method has the advantages of high percent of pass, and high efficiency. Meanwhile, the invention further discloses the special clamping mould used by the pipe end forming method. The special clamping mould can realize the pipe end forming of the special pipeline pieces with angles, and has the requirement on the length of an expanding section of the pipeline that the length is larger than 50mm as compared with the existing pipe end forming requirement that the length of a linear section is larger than 90mm, so that the pipeline piece processing scope is greatly enhanced. In addition, the special clamping mould also has the advantages of low design and manufacture cost and easiness in operation.

Description

technical field [0001] The invention relates to the processing of metal pipes, in particular to a molding method of special-shaped pipe ends and the used special-shaped clamping mold. Background technique [0002] Pipe end forming refers to the use of forming machines to perform forming processes such as flaring, shrinking, positioning points, positioning rings, and flared mouths on the ends of pipe fittings. The molding method is as follows: first clamp the pipe end to be processed with the clamping mold on the molding machine, and then use the expansion and contraction mold to expand the pipe end, shrink the mouth, punch the positioning point, locate the ring, expand the bell mouth and other molding processes. Since the existing clamping molds are only suitable for forming the pipe ends of straight pipe fittings, and the length of the clamped straight line must be greater than 70 mm, the processing range is small, which cannot meet the requirements for pipe end molding of ...

AI Technical Summary

Problems solved by technology

However, since the pipe end is first formed and then bent, the length of the straight line is required to be greater than 90mm, and the pipe end is easily damaged during bending, which cannot meet the accuracy requirements and the pass rate is low

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