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Patent Searching and Data


Title:
METHOD FOR PROCESSING SUPERFINE BLADE EDGE USING FEMTOSECOND LASER
Document Type and Number:
WIPO Patent Application WO/2020/111411
Kind Code:
A1
Abstract:
The present invention relates to a method for processing a superfine blade edge using a femtosecond laser, the method comprising: a step for primarily grinding a blade edge portion by using a grinding wheel; and a step for secondarily grinding at least a part of the blade edge portion by radiating a femtosecond laser in the lengthwise direction of the ground blade edge portion. The secondary grinding step comprises: a step for oscillating the femtosecond laser; a step for modifying energy distribution of the femtosecond laser; a step for increasing the size of the energy distribution of the femtosecond laser; a step for aligning the central portion of the energy distribution of the femtosecond laser to an end portion of the blade edge portion; a step for changing the proceeding direction of the femtosecond laser and radiating the femtosecond laser to the blade edge portion via a focusing lens; and a step for radiating the femtosecond laser after moving, in the lengthwise direction of the blade, a stage on which the blade is placed.

Inventors:
KIM SUNG HWAN (KR)
Application Number:
PCT/KR2019/006105
Publication Date:
June 04, 2020
Filing Date:
May 22, 2019
Export Citation:
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Assignee:
21TH CENTURY CO LTD (KR)
International Classes:
B23P15/40; B23K26/0622; B23K26/064; B23K26/362; B23P17/02; B24B3/36; B24B49/12
Foreign References:
JPH11285924A1999-10-19
KR20120043850A2012-05-07
JP2018126788A2018-08-16
JP2011000667A2011-01-06
KR20150121340A2015-10-29
KR100917140B12009-09-15
KR100762074B12007-10-01
KR101478048B12014-12-31
Other References:
See also references of EP 3791996A4
Attorney, Agent or Firm:
OH, Jong Hwan (KR)
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