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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12629794 B1

PDFFull Text
Date of Patent:
May. 19, 2026

Filed:

Mar. 06, 2025

Spiral magnetorheological polishing method for mid-spatial-frequency error control

Applicant:

National University of Defense Technology, Changsha, CN;

Inventors:

Feng Shi, Changsha, CN;

Bo Wang, Changsha, CN;

Ci Song, Changsha, CN;

Guipeng Tie, Changsha, CN;

Xing Peng, Changsha, CN;

Shuo Qiao, Changsha, CN;

Baoqi Gong, Changsha, CN;

Assignee:

NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY, Changsha, CN;

Attorney:

Thomas | Horsetemeyer, LLP

Primary Examiner:

Makena S Markman

Int. Cl.
CPC ...
B24B 49/02 (2006.01); B24B 1/00 (2006.01); B24B 13/01 (2006.01); B24B 31/112 (2006.01); B24B 49/12 (2006.01); B24B 51/00 (2006.01);
U.S. Cl.
CPC ...
B24B 49/02 (2013.01); B24B 13/012 (2013.01); B24B 31/112 (2013.01); B24B 49/12 (2013.01); B24B 51/00 (2013.01); B24B 1/005 (2013.01);
Abstract

A spiral magnetorheological polishing method for mid-frequency error control is provided, relating to the technical field of optical polishing. The method includes: scanning along a polishing path by using a magnetorheological polishing method, and removing a material in a spiral manner with a polishing tool to achieve spiral magnetorheological polishing of a workpiece. An angle between a scanning direction and a workpiece material removal direction is changed in real time during scanning, to alter a spatial posture of a removal function on a polishing surface in a spiral manner, thereby reducing mid-frequency errors. The method further includes: during scanning, randomly changing a processing line spacing in real time to further achieve suppression of mid-frequency ripple errors. A scanning strategy employs raster scanning processing; when the scanning strategy employs raster scanning processing, the processing line spacing is a raster scanning spacing.

Find Patent Forward Citations

Shi, Feng. (2026). Spiral magnetorheological polishing method for mid-spatial-frequency error control (U.S. Patent No. 12629794). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12629794

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