ARRAYED GRINDING METHOD BASED ON ACTIVE PRESSURE MODULATION - NANJING INSTITUTE OF ASTRONOMICAL OPTICS & TECH NATIONAL ASTRONOMICAL OBSERVATORIES CAS

Title:

ARRAYED GRINDING METHOD BASED ON ACTIVE PRESSURE MODULATION

Document Type and Number:

WIPO Patent Application WO/2022/198739

Kind Code:

A1

Abstract:

An arrayed grinding method based on active pressure modulation, the method comprising: preparing grinding tools; performing measurement to obtain error distribution of a mirror to be processed, and calculating a residence time of a single grinding disk (28) according to grinding characteristics of the grinding tools under standard operating conditions; according to a spatial layout of the grinding tools, dividing a residence time table into sub-residence time tables without gaps in between, each grinding tool being responsible for processing a sub-region according to the sub-residence time table; generating, according to the sub-residence time tables, a path file for scanning sub-regions, and converting the residence time into residence pressure so as to generate a pressure control list; and putting the path file into a mirror scanning device for operation, and putting the pressure control list into a control system of the grinding tool for synchronous operation. By means of the method, small-diameter grinding tools are densely arranged so as to increase the effective grinding area; quantitative grinding is realized by means of active pressure modulation; and a mirror is divided into several sub-regions so as to increase processing parallelism, thereby improving processing efficiency.

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Inventors:

ZHENG YI (CN)
LIANG BIN (CN)
LI YING (CN)

Application Number:

PCT/CN2021/089558

Publication Date:

September 29, 2022

Filing Date:

April 25, 2021

Export Citation:

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Assignee:

NANJING INSTITUTE OF ASTRONOMICAL OPTICS & TECH NATIONAL ASTRONOMICAL OBSERVATORIES CAS (CN)

International Classes:

B24B13/00; B24B27/00; B24B49/00; B24B49/16

Foreign References:

CN110948380A	2020-04-03
CN111753409A	2020-10-09
CN109866104A	2019-06-11
CN108555729A	2018-09-21
CN108356693A	2018-08-03
US4523409A	1985-06-18

Attorney, Agent or Firm:

NANJING ZHISHI LAW FIRM OF INTELLECTUAL PROPERTY (CN)

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