RU2016114822A - Способ контроля плотности энергии лазерного пучка посредством анализа изображения и соответствующее устройство - Google Patents
Способ контроля плотности энергии лазерного пучка посредством анализа изображения и соответствующее устройство Download PDFInfo
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- 238000000034 method Methods 0.000 title claims 11
- 238000012544 monitoring process Methods 0.000 title 1
- 239000000758 substrate Substances 0.000 claims 13
- 229910000838 Al alloy Inorganic materials 0.000 claims 4
- 238000005259 measurement Methods 0.000 claims 2
- 238000012935 Averaging Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/264—Arrangements for irradiation
- B29C64/286—Optical filters, e.g. masks
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- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
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- B23K2103/00—Materials to be soldered, welded or cut
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- B33—ADDITIVE MANUFACTURING TECHNOLOGY
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- B33Y10/00—Processes of additive manufacturing
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Claims (30)
1. Способ (S) контроля плотности энергии лазерного пучка (3) на основании по меньшей мере двух параметров лазерного пучка (3), содержащий этапы, на которых:
- лазерным пучком (3) регулярно воздействуют на контрольную подложку (7) и при каждом воздействии измеряют (S4) интенсивность света, получаемую на этой контрольной подложке,
- выявляют (S6,S7,S8) изменение интенсивности света на контрольной подложке (7) по меньшей мере между двумя измерениями, и
- если изменение интенсивности света превышает заданный порог, определяют нестабильный параметр или нестабильные параметры плотности энергии лазерного пучка (3) (S8).
2. Способ (S) контроля по п. 1, в котором плотность энергии лазерного пучка (3) контролируют на основании трех параметров, в частности, мощности, скорости и размера лазерного пучка (3).
3. Способ (S) контроля по п. 1, в котором этап воздействия и регулярного измерения интенсивности света на контрольной подложке (7) включает в себя подэтапы, на которых:
(i) воздействуют лазерным пучком (3) на контрольную подложку и получают изображение лазерного пучка (3) на указанной контрольной подложке (S2) для получения опорного изображения,
(ii) определяют интенсивность света в точке воздействия лазерного пучка (3) в опорном изображении (S3), и
(iii) регулярно воздействуют лазерным пучком (3) на контрольную подложку (7) и получают изображение лазерного пучка (3) на указанной контрольной подложке (7) для получения контрольного изображения (S4) и определяют интенсивность света на контрольной подложке (7) в точке воздействия лазерного пучка (3) в контрольном изображении (S5), а
этап выявления изменения интенсивности света включает в себя подэтапы, на которых:
(iv) сравнивают интенсивность света в полученном таким образом контрольном изображении с интенсивностью света в опорном изображении (S6), и
(v) на основании указанного сравнения делают вывод об изменении плотности энергии лазерного пучка (3) (S7,S8).
4. Способ (S) контроля по п. 3, в котором интенсивность света определяют путем измерения оттенков серого в опорном изображении и в контрольном изображении (S3,S5).
5. Способ (S) контроля по п. 4, в котором оттенки серого в опорном изображении и в контрольном изображении измеряют в нескольких точках, чтобы определить интенсивность света путем усреднения профиля интенсивности света в каждой точке каждого изображения.
6. Способ (S) контроля по п. 3, дополнительно содержащий, перед воздействием лазерным пучком (3) на контрольную поверхность для получения опорного изображения (S2), первоначальный этап (S1), во время которого определяют первоначальное значение параметров и, если изменение интенсивности света превышает заданный порог, указанный способ (S) дополнительно содержит подэтапы, на которых:
- определяют значение параметров лазерного пучка (3) и сравнивают его с первоначальным значением указанных параметров, чтобы выявить нестабильный параметр или нестабильные параметры, и
- модифицируют лазер (2), с тем чтобы восстановить стабильность указанного(ых) нестабильного(ых) параметра(ов) (S9).
7. Способ (S) контроля по п. 6, в котором этапы (i)-(iii) повторяют с модифицированным лазерным пучком (3) для определения нового опорного изображения.
8. Способ (S) контроля по п. 7, в котором повторяют также первоначальный этап (S1).
9. Устройство (1) контроля плотности энергии лазерного пучка (3) на основании по меньшей мере двух параметров лазерного пучка (3), при этом указанными параметрами являются мощность, скорость и/или размер лазерного пучка (3), характеризующееся тем, что выполнено с возможностью контроля плотности энергии лазерного пучка (3) при помощи способа по одному из пп. 1-6, и содержит:
- систему (4) получения изображений, выполненную с возможностью получения изображений лазерного пучка (3) на контрольной подложке (7), и
- систему (5) обработки изображений, выполненную с возможностью сравнения интенсивности света в различных изображениях, снятых системой (5) получения изображений, и выявления изменения интенсивности света на контрольной подложке (7) по меньшей мере между двумя измерениями, и
- средства (6) обработки данных, выполненные с возможностью определения на основании изменения интенсивности света, является ли нестабильным по меньшей мере один из параметров лазерного пучка (3).
10. Устройство контроля (1) по п. 9, в котором контрольная подложка (7) содержит
однородное покрытие.
11. Устройство контроля (1) по п. 9 или 10, в.котором контрольная подложка (7) содержит пластину из алюминиевого сплава.
12. Устройство контроля (1) по п. 11, в котором пластина из алюминиевого сплава является анодированной и содержит анодированный слой.
13. Устройство контроля (1) по п. 12, в котором анодированный слой имеет черный цвет.
14. Устройство контроля (1) по п. 12 или 13, в котором анодированный слой имеет толщину от 0,5% до 3% толщины пластины (7) из алюминиевого сплава, предпочтительно около 1%.
15. Устройство контроля (1) по п. 14, в котором толщина пластины (7) из алюминиевого сплава составляет примерно 1 мм, а толщина анодированного слоя составляет примерно 0,01 мм.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR1358963 | 2013-09-18 | ||
FR1358963A FR3010785B1 (fr) | 2013-09-18 | 2013-09-18 | Procede de controle de la densite d'energie d'un faisceau laser par analyse d'image et dispositif correspondant |
PCT/FR2014/052312 WO2015040327A1 (fr) | 2013-09-18 | 2014-09-17 | Procédé de contrôle de la densité d'énergie d'un faisceau laser par analyse d'image et dispositif correspondant |
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RU2016114822A true RU2016114822A (ru) | 2017-10-20 |
RU2016114822A3 RU2016114822A3 (ru) | 2018-06-28 |
RU2675185C2 RU2675185C2 (ru) | 2018-12-17 |
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US (1) | US10434598B2 (ru) |
EP (1) | EP3046703B1 (ru) |
JP (1) | JP6533789B2 (ru) |
CN (1) | CN105555444B (ru) |
BR (1) | BR112016005829B8 (ru) |
CA (1) | CA2923846C (ru) |
FR (1) | FR3010785B1 (ru) |
RU (1) | RU2675185C2 (ru) |
WO (1) | WO2015040327A1 (ru) |
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CA2952633C (en) | 2014-06-20 | 2018-03-06 | Velo3D, Inc. | Apparatuses, systems and methods for three-dimensional printing |
WO2016081651A1 (en) | 2014-11-18 | 2016-05-26 | Sigma Labs, Inc. | Multi-sensor quality inference and control for additive manufacturing processes |
US10207489B2 (en) * | 2015-09-30 | 2019-02-19 | Sigma Labs, Inc. | Systems and methods for additive manufacturing operations |
US10843266B2 (en) * | 2015-10-30 | 2020-11-24 | Seurat Technologies, Inc. | Chamber systems for additive manufacturing |
US10065270B2 (en) | 2015-11-06 | 2018-09-04 | Velo3D, Inc. | Three-dimensional printing in real time |
JP2017088992A (ja) * | 2015-11-17 | 2017-05-25 | 住友電工焼結合金株式会社 | 3d造形用のベースプレート |
DE102015015353A1 (de) * | 2015-12-01 | 2017-06-01 | Voxeljet Ag | Verfahren und Vorrichtung zur Herstellung von dreidimensionalen Bauteilen mittels Überschussmengensensor |
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BR112016005829A2 (ru) | 2017-08-01 |
BR112016005829B1 (pt) | 2021-09-08 |
EP3046703A1 (fr) | 2016-07-27 |
EP3046703B1 (fr) | 2019-07-17 |
CN105555444A (zh) | 2016-05-04 |
FR3010785B1 (fr) | 2015-08-21 |
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