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Title:
NUMERICAL CONTROL MILLING AND GRINDING FORMING METHOD AND DEVICE FOR LARGE-DIAMETER ASPHERICAL MIRROR, AND NUMERICAL CONTROL POLISHING METHOD AND DEVICE FOR LARGE-DIAMETER ASPHERICAL MIRROR
Document Type and Number:
WIPO Patent Application WO/2021/128844
Kind Code:
A1
Abstract:
Disclosed are a numerical control milling and grinding forming method and device for a large-diameter aspherical mirror, and a numerical control polishing method and device for a large-diameter aspherical mirror. An aspherical surface is discretized into a series of annular zones with different radii, and each annular zone is sequentially subjected to generating by means of an annular grinding wheel cutter; the annular zones are arranged at equal intervals, and the total number of the annular zones is N; and the width of any annular zone is jointly determined by an Nth annular zone, an (N-1)th annular zone, the positioning precision and a generatrix equation of an aspherical mirror, and the aspherical surface is formed by a plurality of annular zones in an enveloping manner. The diameter of the cutter for machining is larger than the semi-diameter of the aspherical surface, and the cutter makes contact with the surface of a workpiece in the form of an annular zone; therefore, the service life of the annular cutter is prolonged. The interval between the annular zones is far larger than a traditional machining screw pitch; therefore, the machining efficiency is obviously improved.

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Inventors:
GUO PEIJI (CN)
CHEN XI (CN)
DAI ZHUOCHENG (CN)
ZHU YONGXIANG (CN)
LI CHENCHAO (CN)
Application Number:
PCT/CN2020/105663
Publication Date:
July 01, 2021
Filing Date:
July 30, 2020
Export Citation:
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Assignee:
UNIV SOOCHOW (CN)
International Classes:
B24B13/00; B24B13/01
Foreign References:
CN111376142A2020-07-07
US3492764A1970-02-03
US4768308A1988-09-06
CN110076680A2019-08-02
CN103056731A2013-04-24
Attorney, Agent or Firm:
SUZHOU ZHIPIN PARTNERS (CN)
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