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A thin-walled plate magnetorheological fluid flexible support method

A magnetorheological fluid and support method technology, which is applied in the direction of support, manufacturing tools, workpiece clamping devices, etc., can solve the problems that have not been mentioned about the flexible support method of thin-walled plate magnetorheological fluid, and achieve good clamping flexibility, Suppresses processing deformation and has good magnetic field uniformity

Active Publication Date: 2019-01-01
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] None of the above methods and devices mentions a flexible support method for thin-walled flat magnetorheological fluids based on extrusion mode

Method used

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  • A thin-walled plate magnetorheological fluid flexible support method
  • A thin-walled plate magnetorheological fluid flexible support method
  • A thin-walled plate magnetorheological fluid flexible support method

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Embodiment Construction

[0028] The embodiments of the present invention will be described in detail in conjunction with the drawings and technical solutions.

[0029] The thin-walled flat plate 3 used in this embodiment is made of aluminum alloy, the surface shape error after roll forming is 0.1-0.2mm, the thickness is 1mm, and the size is 1000mm×1000mm; the excitation unit array is 10×10; figure 1 , 2 shown. Carbonyl iron powder magnetorheological fluid is made of 40% volume fraction of carbonyl iron powder and 60% volume fraction of silicone oil, with a density of 3.55g / ml. The milling force is 100N, the diameter of the milling cutter is 8mm, the maximum thickness of the magnetorheological fluid is 4mm, the viscosity of the magnetorheological fluid is 0.69Pa·s, the extrusion speed is 1mm / s, and the coefficient C related to the medium of the magnetorheological fluid is 0.95. The particle volume fraction is 0.40, and the relative magnetic permeability of magnetorheological fluid is 17.

[0030]In ...

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Abstract

The invention provides a magnetorheological fluid flexible support method for a thin-wall slab, which belongs to the technical field of clamping of thin-wall parts, and relates to the magnetorheological fluid flexible support method for a thin-wall slab. The method comprises firstly clamping the thin-wall slab on an array type controllable excitation clamp, and reliably sealing the thin-wall slab; then vacuumizing to construct a vacuum negative pressure environment between the thin-wall slab and the clamp body, and under set external pressure, performing automatic filling of magnetorheological fluid; and finally, by array type excitation units of which the location coding is controlled by a multi-way switch, performing excitation phase change of the magnetorheological fluid and finishing curing support of an excitation region. In the method, the magnetorheological fluid works in an extrusion mode in an excitation manner, an elasticity modulus is higher, and support rigidity is ensured; a magnetic field control module is formed by the array type excitation units, and by the location coding on the excitation units, multi-mode excitation requirements on units, partitions and the integrity can be realized; and flexible clamping of the thin-wall slab can be realized.

Description

technical field [0001] The invention belongs to the technical field of clamping of thin-walled parts, and relates to a method for flexible supporting of thin-walled plate magnetorheological fluid. Background technique [0002] Thin-walled parts are typical parts of high-end aerospace equipment, and their reliable clamping is the core link to ensure efficient material removal and final machining geometric accuracy of parts. Most of the large thin-walled parts with a relatively gentle shape, especially those similar to thin-walled flat plates, are mostly clamped by profiling. However, there is a large surface error in the formed blank, which causes the part and the tire mold to not fit together, and there is a clamping gap; and the complex stress deformation generated during processing, such as the bulging of the part, exacerbates this problem. Even a large area of ​​"void" phenomenon. In the processing of thin-walled parts, auxiliary means such as large pressure plates and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/08B25B11/00
CPCB23Q3/065B23Q3/086B25B11/00
Inventor 刘海波罗祺毋健雄王永青薄其乐康仁科
Owner DALIAN UNIV OF TECH
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