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Reducing pipe fitting magneto-rheological elastic material soft die forming device and method

A magneto-rheological elastic and diameter-reducing pipe technology, which is applied in the field of pipe forming, can solve the problems of limited degree of diameter reduction, large wall thickness reduction at the apex of the pipe blank diameter reduction area, etc., to reduce springback and improve filling capacity and tube billet molding force, avoiding the effect of excessive thinning of wall thickness

Active Publication Date: 2021-03-26
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a magneto-rheological elastic material soft mold forming device and method for reducing pipe fittings, which is used to solve the problem that the wall thickness at the apex of the reducing area of ​​the tube blank is too thin and becomes large when the existing method is used to form reducing pipe fittings. The problem of limited diameter

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  • Reducing pipe fitting magneto-rheological elastic material soft die forming device and method
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  • Reducing pipe fitting magneto-rheological elastic material soft die forming device and method

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Embodiment Construction

[0028] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Device example:

[0030] This embodiment provides a flexible mold forming device for magnetorheological elastic materials of variable diameter pipe fittings (soft mold forming device for short), such as figure 1 As shown, the device includes an upper mold 3, a coil 4, a lower mold 7 and a plunger 8; the outer side of the upper mold 3 and the lower mold 7 is arranged with a coil 4, and a cavity is formed between the upper mold 3 and the lower mold 7, and the cavity The inside is used to place the tube blank 2. The tube blank 2 is filled with a non-homogeneous magneto-rheological soft mold. The heterogeneous magneto-rheological soft mold is divided into an upper part, a middle part and a lower part. The upper and lower parts of the ...

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Abstract

The invention provides a reducing pipe fitting magneto-rheological elastic material soft die forming device and method, and belongs to the field of pipe forming. The device comprises an upper die (3),a coil (4), a lower die (7) and a plunger (8), the coil (4) is arranged on the outer side of the upper die (3) and the outer side of the lower die (7), a cavity is formed between the upper die (3) and the lower die (7) and used for placing a pipe blank (2), the pipe blank (2) is filled with a heterogeneous magneto-rheological soft die which is divided into an upper portion, a middle portion and alower portion, the middle portion corresponds to a reducing portion of the pipe blank (2), the upper portion and the lower portion are made of an I-type magneto-rheological elastic material (5), themiddle portion is made of an II-type magneto-rheological elastic material (6), and the flow stress of the I-type magneto-rheological elastic material (5) is smaller than that of the II-type magneto-rheological elastic material (6) under the action of an external magnetic field. The method solves the problems that when a reducing pipe fitting is formed, the wall thickness of the vertex position ofthe reducing area of the pipe blank is reduced too much, and the reducing degree is limited.

Description

technical field [0001] The invention relates to a magneto-rheological elastic material soft mold forming device and method for variable-diameter pipe fittings, and belongs to the technical field of pipe forming. Background technique [0002] The shell part with a large diameter change per unit length is a typical part widely used in the fields of aviation, aerospace and automobiles. The usual forming method for this type of part is separate forming and then combined welding. The dimensional accuracy of the part is affected by each Influenced by a separate forming process, quality control is difficult. At the same time, the weld seam seriously affects the quality and performance of the parts, which increases the manufacturing cost. As the requirements for dimensional accuracy, surface quality and manufacturing efficiency of variable diameter parts are getting higher and higher, the existing forming methods have been unable to adapt; For parts with relatively large diameters,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/14
CPCB21D26/14
Inventor 相楠郭俊卿赵一博皇涛王朋义宋亚虎
Owner HENAN UNIV OF SCI & TECH
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