US 11,772,203 B2
Laser processing system and method
Seong Ho Bae, Daejeon (KR)
Assigned to NPS CO., LTD., Cheongju-si (KR)
Filed by NPS CO., LTD., Cheongju-si (KR)
Filed on Feb. 17, 2021, as Appl. No. 17/178,097.
Claims priority of application No. 10-2020-0018738 (KR), filed on Feb. 17, 2020; and application No. 10-2020-0056878 (KR), filed on May 13, 2020.
Prior Publication US 2021/0252647 A1, Aug. 19, 2021
Int. Cl. G05B 19/418 (2006.01); B23K 26/70 (2014.01)
CPC B23K 26/70 (2015.10) [G05B 19/41875 (2013.01); G05B 2219/32368 (2013.01); G05B 2219/33198 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A laser processing method, wherein laser processing is performed on a processing target using a processing machine according to a processing design, the method comprising:
(a) preparing, according to predetermined setting criteria, a processing recipe comprising a plurality of set values for testing of processing parameters for controlling a quality value of a predetermined quality item; wherein the plurality of set values comprises one of power, frequency, pulse width, duty ratio or focal length of a laser beam,
(b) repeatedly performing first test processing for the processing target in multiple implementation rounds by driving the processing machine by selectively using any one of the set values for testing as a set value of the processing parameters according to a predetermined order;
(c) analyzing each of results of the first test processing and individually measuring a quality value of each of the results of the first test processing; and
(d) selecting, among the set values for testing, a set value for testing used in a specific implementation round of the first test processing, at which a quality value that most satisfies predetermined reference quality is measured, as a set value for manufacturing a product from the processing target of the processing parameters, wherein the manufacturing is controlled based on the set value for manufacturing the product;
wherein the processing design is provided to have a processing shape corresponding to a shape of the product, and
wherein the processing shape is defined by a pattern to be processed, which comprises at least one of a line and a dot,
in step (a), the pattern to be processed includes a plurality of sections each having different shapes, the pattern to be processed is divided into a plurality of processing units each including one of the plurality of sections and the processing recipe for each of the processing units is individually prepared; and
in step (b), first test processing for each of the processing units is individually performed, wherein, first test processing for a specific processing unit among the processing units is performed by selectively using one of the set values for testing in the processing recipe for the specific processing unit based on a shape of a corresponding section of the specific processing unit.