Magnetorheological polishing device suitable for ultra-large aperture optical processing

Abstract

The invention relates to a magneto-rheological polishing device suitable for ultra-large aperture optical processing, comprising: a magneto-rheological fluid polishing device, which includes a magnet device capable of providing a magnetic field; a horizontal protruding section is provided at the lower end of the magnet device; The variable fluid circulation device can make the magneto-rheological fluid circulate through the horizontal protrusion section, and form ribbon protrusions under the action of a magnetic field perpendicular to the flow direction. The invention provides a magneto-rheological polishing device suitable for ultra-large-diameter optical processing, which can be rebuilt on a polishing machine tool, and can replace the polishing head of the polishing machine tool, such as a stress plate, a small grinding head, etc., without changing the original mechanical structure of the machine tool. The magnetorheological polishing device of the present invention not only reduces the volume of the system, simplifies the mechanical structure, but also increases the material removal efficiency, thereby solving the problems of low removal efficiency and long processing cycle of the current large-diameter aspheric surface.

Description

technical field [0001] The invention belongs to the technical field of precision optical polishing, and in particular relates to a magnetorheological polishing device suitable for ultra-large-diameter optical processing. Background technique [0002] Large-aperture optical systems can effectively improve spatial angular resolution and energy collection capabilities, and are widely used in space telescopes and high-precision ground imaging. However, large-diameter mirrors need to remove more materials during the grinding and polishing process, so as to improve processing efficiency and shorten the processing cycle without reducing the processing accuracy. [0003] Magneto-rheological polishing technology began in the 1970s. In 1974, W.I.Kordonski of the Institute of Heat and Mass Transfer in the former Soviet Union used magnetorheological fluids in mechanical processing. By the early 1990s, W.I.Kordonski cooperated with the Optical Manufacturing Center of the University of R...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of low material removal efficiency of existing magnetorheological polishing devices, and to provide a magnetic flux that can be applied to high-efficiency and high-precision processing of large-diameter optical elements and is suitable for ultra-large-diameter optical processing. Variable polishing device

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