Plate magneto-rheological soft die differential pressure forming device and method
A magnetorheological and magnetorheological elastic technology, which is applied in the field of plate magnetorheological soft mold differential pressure forming devices, can solve problems such as cracking and excessive local wall thickness reduction, and avoid excessive local wall thickness reduction or cracking Effect
Active Publication Date: 2021-03-26
HENAN UNIV OF SCI & TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a plate magnetorheological soft mold differential pressure forming device and method to solve the problem of excessive thinning of local wall thickness when forming thin-walled and locally small curvature radius parts in the existing soft mold forming method or broken problems
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[0031] 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.
[0032] Device example:
[0033] Such as figure 1As shown, the present embodiment provides a plate magnetorheological soft mold differential pressure forming device, which includes a plunger 3, a container frame 4, a coil 5 (such as a copper coil), a sealing ring 8 (such as a rubber sealing ring), A medium bin 9, a partition 11, an elastic body 12 (such as a spring or a piston) and a base 13; the container frame 4 and the media bin 9 are set up and down correspondingly; The bottom is provided with an overflow port, and the overflow port is connected with an overflow chamber with variable volume; wherein, the inner cavity of the medium chamber 9 is filled with type I magnetorheological viscoplastic material 10, and the inner cavity of the c...
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The invention provides a plate magneto-rheological soft die differential pressure forming device and method, and belongs to the field of plate forming. The device comprises an accommodating frame (4),a coil (5) and a medium bin (9), the accommodating frame (4) and the medium bin (9) are vertically and correspondingly arranged, the coil (5) is arranged on the outer side of the accommodating frame(4) and the outer side of the medium bin (9), and an overflow port is formed in the bottom of the medium bin (9) and connected with an overflow cavity with the variable volume; and an inner cavity ofthe medium bin (9) is filled with a I-type magneto-rheological viscoplastic material, an inner cavity of the accommodating frame (4) is filled with a magneto-rheological elastic material or a II-typemagneto-rheological viscoplastic material, and the increasing amplitude of flowing stress of the I-type magneto-rheological viscoplastic material under an external magnetic field is larger than that of the II-type magneto-rheological viscoplastic material. The device can effectively prevent a part of a plate from being excessively reduced in wall thickness or broken when a thin-wall part with thelocal small curvature radius is formed.
Description
technical field [0001] The invention relates to a plate magnetorheological soft mold differential pressure forming device and method, belonging to the technical field of plate forming. Background technique [0002] Thin-walled shell parts with complex shapes have structural features such as thin walls and small local curvature radii. Such parts can realize special part functions, improve the lightweight level of equipment, and improve equipment performance. They are widely used in aviation, aerospace, and automobile manufacturing. . However, when the local small curvature radius profile is formed, the local deformation resistance of the plate is greatly increased, resulting in stress concentration, which is easy to cause local excessive thinning or cracking, which seriously affects the performance of such parts. [0003] The soft molding method can form complex shapes, and can form a uniformly distributed pressure on the surface of the plate, which is conducive to improving...
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Login to View More IPC IPC(8): B21D26/14
CPCB21D26/14
Inventor 相楠皇涛郭俊卿赵一博王朋义宋亚虎
Owner HENAN UNIV OF SCI & TECH