Mechanical rotating type pulse magnetic field generator used for magneto-rheological polishing

A magnetorheological polishing and pulsed magnetic field technology, which is applied in the field of ultra-precision machining, can solve the problems of low polishing efficiency, difficult to guarantee the machining shape accuracy, and a lot of time, so as to prolong the service life, stabilize the material removal efficiency and accelerate the contact frequency. Effect

Pending Publication Date: 2018-05-01
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0005] The disadvantage of the magnetorheological polishing method in the above-mentioned prior art is: when the magnetorheological fluid moves with the polishing disc to the vicinity of the concave space formed by the workpiece and the polishing disc, a flexible raised "polishing ribbon" is formed, but the "polishing satin" The belt” and the surface of the workpiece bel...

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  • Mechanical rotating type pulse magnetic field generator used for magneto-rheological polishing
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  • Mechanical rotating type pulse magnetic field generator used for magneto-rheological polishing

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a mechanical rotating type pulse magnetic field generator used for magneto-rheological polishing. The mechanical rotating type pulse magnetic field generator mainly comprises amagnet disc rotating mechanism and a magnet disc vertical direction adjusting mechanism. The magnet disc rotating mechanism comprises a driving motor, a rotating shaft, a motor support, a magnet discand a permanent magnet cluster. The permanent magnet cluster is fixedly installed on the magnet disc and generates a magnetic field required for polishing; the magnet disc is fixedly connected with the rotating shaft; the driving motor drives the rotating shaft to rotate, and the rotating shaft drives the magnet disc to rotate; and the magnet disc vertical direction adjusting mechanism is fixedlyconnected with the magnet disc and drives the magnet disc to move up and down. According to the mechanical rotating type pulse magnetic field generator, large-area polishing areas can be evenly formed; by rotating the magnet disc, the static magnetic field is converted into a dynamic pulse magnetic field; and a magnetic chain in a flexible polishing head can be forced to be rearranged so as to achieve rapid regenerating of abrasive particles, the contact frequency of the abrasive particles and the surface of a workpiece is increased, the abrasion speed of the abrasive particles is reduced, andthe polishing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of ultra-precision machining, in particular to a mechanical rotary pulse magnetic field generator for magnetorheological polishing. Background technique [0002] The magnetorheological polishing technology uses the rheological properties of the magnetorheological polishing fluid in a magnetic field for polishing. The magnetorheological polishing fluid will undergo a rheological phenomenon in a gradient magnetic field to form a viscoplastic Bingham (Bingham) flexible protrusion. , when the flexible protrusion is in contact with the surface of the workpiece to be processed and moves relatively, a large shear force will be generated on the surface of the workpiece, and the shear force will remove the material under the action of abrasive particles in the magnetorheological polishing fluid. [0003] Magnetorheological polishing technology is a new type of optical surface processing method proposed by Kordonski a...

Claims

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Application Information

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IPC IPC(8): B24B1/00
CPCB24B1/005
Inventor 聂蒙李建勇朱朋哲曹建国刘月明傅茂辉
Owner BEIJING JIAOTONG UNIV
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