Magnetic current changing polishing device for large caliber aspheric surface optical part

Abstract

The invention discloses a magnetorheological finishing device for large-caliber aspheric optical parts. The magnetorheological finishing device comprises a machine tool, a finishing device, a magnetorheological finishing liquid circulating system for providing the finishing liquid with stable performance, and a control system connected with the components described above. The machine tool has four or more than four degrees of freedom. The finishing device is fixed on the machine tool and is positioned over the workpiece on the machine tool to be processed. The device has the advantages of simple and compact structure, low cost, simple control, wide range of application, and strong processing capacity, and is used for large-caliber aspheric optical parts.

Description

technical field [0001] The invention mainly relates to the technical field of magnetorheological polishing, in particular to a magnetorheological polishing device for large-diameter aspherical optical parts. Background technique [0002] The polishing of large-size aspheric optical parts is a key technical problem in the field of ultra-precision machining. Aspherical optical elements have the advantages of correcting aberrations to obtain higher imaging quality than spherical elements, simplifying the optical system structure, reducing system weight, improving system stability, and reducing costs, especially in satellite reconnaissance telescopes, laser weapons, and space probes. In large-scale optical systems such as , large-scale high-precision optical aspheric elements play an extremely important role. Modern space optical systems put forward higher and higher requirements for the size and precision of aspheric optical components. Above 1:2. Accuracy requirements: surf...

AI Technical Summary

Problems solved by technology

Since the magnetorheological polishing fluid cannot be recycled in this device, it cannot be guaranteed that the composition of the magnetorheological polishing fluid will not change for a long time, that is, the "polishing mold" will not change, and the processing time of large-scale optical parts Very long, so the system is not suitable for the processing of large-sized optical parts

Chinese patent application number: 200610043079.1, invention name: magnetorheological flexible fine grinding and polishing equipment and method, this invention can not solve the problem of large-diameter optical parts processing

To sum up, due to the limitations of the processing methods used or some technical problems that have not been solved, there is no method and equipment for magnetorheological polishing of large-size aspheric optical parts in China.

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