WO2014125597A1 - レーザ加工装置、加工制御装置およびパルス周波数制御方法 - Google Patents
レーザ加工装置、加工制御装置およびパルス周波数制御方法 Download PDFInfo
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- WO2014125597A1 WO2014125597A1 PCT/JP2013/053512 JP2013053512W WO2014125597A1 WO 2014125597 A1 WO2014125597 A1 WO 2014125597A1 JP 2013053512 W JP2013053512 W JP 2013053512W WO 2014125597 A1 WO2014125597 A1 WO 2014125597A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/105—Scanning systems with one or more pivoting mirrors or galvano-mirrors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- 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
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- 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
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10038—Amplitude control
- H01S3/10046—Pulse repetition rate control
Definitions
- the present invention relates to a laser processing apparatus, a processing control apparatus, and a pulse frequency control method that perform drilling by irradiating a workpiece with pulsed laser light.
- a laser processing apparatus microwave laser processing machine
- the pulse laser oscillator outputs pulsed laser light based on a laser output command sent from the processing control apparatus.
- the pulse laser oscillator may approach the capacity limit of the power supply (oscillator power supply panel) when the repetition frequency of the output pulse laser light increases.
- the conventional laser processing equipment performs processing such as outputting an alarm and stopping it, or applying a protective function to the pulse laser oscillator to reduce the power (decreasing the pulse laser output). It was.
- the gas laser oscillator described in Patent Document 1 stops the pulse command value when the power source approaches the capacity limit, and sets the pulse command value based on the upper limit allowable value of the power supplied to the discharge tube.
- the present invention has been made in view of the above, and performs laser processing on a workpiece without reducing processing quality and processing efficiency even when the power supply of an oscillator approaches a capacity limit. It is an object of the present invention to obtain a laser processing apparatus, a processing control apparatus, and a pulse frequency control method capable of performing the above.
- a laser processing apparatus of the present invention includes a resonator that outputs pulsed laser light according to supplied power, and a power source that supplies the power to the resonator.
- a pulse laser oscillator having a galvano scan mirror that positions the irradiation position of the pulse laser beam in a galvano area and irradiates the workpiece, and the pulse laser beam is synchronized with the operation of the galvano scan mirror.
- a processing control device that controls the pulse laser oscillator and the galvano scan mirror to output, and an amount of electric power supplied from the power source to the resonator, and the power source has a capacity based on the power amount
- a power determination unit that determines whether or not the limit has been approached, and the machining control device includes the power source from the power determination unit to a capacity limit.
- FIG. 1 is a diagram illustrating a configuration of a laser processing apparatus according to the first embodiment.
- FIG. 2 is a flowchart illustrating an operation processing procedure of the laser processing apparatus according to the embodiment.
- FIG. 3 is a diagram showing the relationship between the repetition frequency of the pulse laser beam and the power supply amount of the pulse laser oscillator.
- FIG. 4 is a diagram for explaining the repetition frequency of the pulse laser beam.
- FIG. 5 is a diagram showing the configuration of the laser processing apparatus according to the second embodiment.
- FIG. 1 is a diagram illustrating a configuration of a laser processing apparatus according to the first embodiment.
- the laser processing apparatus 100A is an apparatus that performs a drilling process such as a through hole on a work (workpiece) 7 such as a printed wiring board.
- 100 A of laser processing apparatuses of this Embodiment are controlled so that electric power may not become higher than a capacity
- the laser processing apparatus 100A includes a pulse laser oscillator 1A, a galvano scan mirror 3, and a processing control apparatus 2A.
- the pulse laser oscillator 1A is a device that outputs pulse laser light and sends it to the workpiece 7 side.
- the pulse laser oscillator 1A outputs pulse laser light in response to a command from the processing control device 2A.
- the pulse laser oscillator 1A includes a resonator 11, a power source 12, and a power determination unit 13A.
- the resonator 11 outputs pulsed laser light based on the power (current and voltage) sent from the power source 12.
- the power supply 12 supplies power to the resonator 11 in accordance with an instruction from the processing control device 2A.
- the power determination unit 13A detects the power amount (energy amount) of the power source 12 accompanying the output of the pulse laser beam based on the current value supplied from the power source 12 to the resonator 11. In other words, the power determination unit 13 ⁇ / b> A detects the magnitude (power amount) of power supplied from the power supply 12 to the resonator 11. The power determination unit 13A detects the amount of power that the power source 12 supplies to the resonator 11 during a predetermined time (for example, 0.1 to 0.2 seconds).
- the power determination unit 13A determines whether the power source 12 has approached the capacity limit based on the detected power amount. The power determination unit 13A determines that the power supply 12 has approached the capacity limit when the power supply 12 exceeds a predetermined threshold (first threshold). When the power determination unit 13A determines that the power source 12 has approached the capacity limit, the power determination unit 13A outputs a signal (clamp signal) indicating that the power source 12 has approached the capacity limit to the machining control device 2A.
- a predetermined threshold first threshold
- the machining control device 2A controls the pulse laser oscillator 1A and the galvano scan mirror 3 so that the pulse laser beam is output in synchronization with the operation of the galvano scan mirror 3.
- the processing control device 2A outputs a laser output command to the pulse laser oscillator 1A and outputs a positioning command (command for specifying a processing position) to the galvano scan mirror 3.
- the processing control apparatus 2A of the present embodiment controls the repetitive pulse frequency of the pulse laser beam output from the pulse laser oscillator 1A based on the amount of power output from the power supply 12.
- the processing control device 2A irradiates the workpiece 7 by suppressing the operating speed of the galvano scan mirror 3 when the hole position of the workpiece 7 (the position of the processing hole) is high density and the repetition frequency of the pulse laser light to be irradiated becomes high.
- the repetition frequency of the pulsed laser beam is reduced.
- the machining control device 2A prevents the power source 12 from reaching the capacity limit.
- a stable pulse laser output can always be obtained with the maximum capability of the pulse laser oscillator 1A. Therefore, productivity is improved and processing quality is improved.
- the laser processing apparatus 100A includes a mask 4 and an f ⁇ lens 6 constituting an image transfer optical system for the output pulsed laser light.
- the pulse laser beam emitted from the pulse laser oscillator 1 A is sent to the galvano scan mirror 3 through the mask 4 and reflected by the galvano scan mirror 3.
- the galvano scan mirror 3 is a mirror for positioning the irradiation position of the pulse laser beam in the galvano area.
- the galvano scan mirror 3 irradiates the laser processing position on the workpiece 7 with the laser beam via the f ⁇ lens 6 by scanning the pulse laser beam.
- the emission timing of the pulse laser beam output from the pulse laser oscillator 1A and the positioning process of the galvano scan mirror 3 are performed by the machining control device 2A based on the machining program so that the pulsed laser beam can be irradiated to a desired drilling position. Be controlled.
- FIG. 2 is a flowchart illustrating an operation processing procedure of the laser processing apparatus according to the embodiment.
- the processing control apparatus 2A sends a pulse laser output value, a repetition frequency of the pulse laser light, a pulse laser on time, and the like to the power supply 12.
- the power supply 12 supplies current and voltage to the resonator 11 based on the pulse laser output value, the repetition frequency of the pulse laser beam, the pulse laser on time, and the like.
- the current and voltage supplied from the power source 12 to the resonator 11 are for outputting pulsed laser light.
- the power determination unit 13 ⁇ / b> A detects the amount of power of the power supply 12 accompanying the output of the pulsed laser light based on the current and voltage supplied from the power supply 12 to the resonator 11. Then, the power determination unit 13A determines whether or not the power supply 12 has approached the capacity limit based on the detected power amount (step S1).
- the power determination unit 13A determines that the power source 12 has approached the capacity limit when the power source 12 exceeds a predetermined threshold (step S1, Yes), and processes a clamp signal indicating that the power source 12 has approached the capacity limit. Output to the control device 2A.
- the processing control device 2A suppresses the positioning speed of the galvano scan mirror 3 and continues laser processing (step S2). For example, the processing control device 2A continues laser processing while controlling the galvano scan mirror 3 so as not to be faster than the current positioning speed. Thereby, in the laser processing apparatus 100A, laser processing on the workpiece 7 is continued without stopping the pulse command value sent from the processing control apparatus 2A to the pulse laser oscillator 1A.
- the power determination unit 13A determines that the power source 12 is not approaching the capacity limit (No in step S1) and does not send a clamp signal to the machining control device 2A. Thereby, in the laser processing apparatus 100A, laser processing on the workpiece 7 is continued without stopping the pulse command value sent from the processing control apparatus 2A to the pulse laser oscillator 1A.
- an irradiation position of a pulse laser beam is determined based on a wiring pattern and hole position data of a printed wiring board that is a workpiece, and the repetition frequency of the pulse laser beam changes depending on the density of the irradiation position.
- a of pulse laser oscillators of this Embodiment are equipped with the electric power determination part 13A, and when the electric power of the power supply 12 approaches the capacity limit, the electric power determination part 13A notifies that the capacity limit of the power supply 12 has been approached.
- a clamp signal is output to the machining control device 2A.
- the clamp signal is output from the pulse laser oscillator 1A to the machining control device 2A. Is done. Then, the processing control device 2A controls a control signal (pulse laser irradiation positioning signal) output to the galvano scan mirror 3 so that the irradiation positioning speed of the galvano scan mirror 3 does not become higher than the current speed.
- a control signal pulse laser irradiation positioning signal
- the pulse laser beam output in synchronization with the galvano scan mirror 3 is suppressed, and the power source 12 can be prevented from reaching the capacity limit.
- a stable pulsed laser beam is always output at the maximum capacity (maximum processing speed) of the laser processing apparatus 100A for all processing conditions (substrate material, processing hole diameter, hole depth, etc.). Can do. Therefore, it is possible to prevent the productivity from being lowered and to prevent the processing quality from being lowered.
- FIG. 3 is a diagram showing the relationship between the repetition frequency of the pulse laser beam and the power source energy of the pulse laser oscillator.
- the horizontal axis in FIG. 3 is the repetition frequency of the pulse laser beam, and the vertical axis is the amount of power of the power source 12 provided in the pulse laser oscillator 1A.
- the repetition frequency of the pulse laser beam increases, the amount of power of the power source 12 provided in the pulse laser oscillator 1A also increases.
- the power determination unit 13A of the present embodiment detects that the power of the power source 12 has approached the capacity limit 21 and outputs a clamp signal notifying that the capacity limit 21 has been approached to the machining control device 2A. Then, the processing control device 2A controls the galvano scan mirror 3 and the pulse laser oscillator 1A so that the electric energy of the power source 12 does not reach the capacity limit 21 by suppressing the irradiation positioning speed of the galvano scan mirror 3.
- FIG. 4 is a diagram for explaining the repetition frequency of the pulse laser beam.
- the processing control apparatus 2A performs the second operation from the first processing position.
- the movement time 32 for moving the machining position to the machining position is suppressed.
- the power determination unit 13A is disposed in the pulse laser oscillator 1A.
- the power determination unit 13A is not necessarily disposed in the pulse laser oscillator 1A.
- the processing control device 2A suppresses the amount of power of the power supply 12
- the positioning speed of the galvano scan mirror 3 may be maintained at the current speed or may be slower than the current speed.
- the processing control device 2 ⁇ / b> A suppresses the positioning speed of the galvano scan mirror 3 by setting the positioning speed of the galvano scan mirror 3 to be equal to or lower than the current value, thereby suppressing the amount of power of the power source 12.
- processing control device 2A may switch whether the positioning speed of the galvano scan mirror 3 is maintained at the current speed or slower than the current speed based on the history of the electric energy detected by the power determination unit 13A. Good.
- the processing control device 2 ⁇ / b> A may release the suppression after suppressing the positioning speed of the galvano scan mirror 3 for a predetermined time, or the power amount may be a predetermined threshold value ( You may cancel
- the power determination unit 13A assumes that the voltage supplied from the power source 12 to the resonator 11 is a constant value, and determines the power amount of the power source 12 based on the current supplied from the power source 12 to the resonator 11. It may be detected.
- the power determination unit 13A may detect the amount of power of the power source 12 based on the repetition frequency sent from the processing control device 2A to the power source 12. Further, the power determination unit 13 ⁇ / b> A may detect the amount of power of the power source 12 based on the pulse laser beam output from the resonator 11.
- the power determination unit 13A determines the amount of power of the power supply 12, and the positioning speed of the galvano scan mirror 3 is reduced based on the determination result. Even when the value approaches the capacity limit, it is possible to perform laser processing on the workpiece 7 without stopping the pulse command value. Therefore, it is possible to perform laser processing on the workpiece 7 without lowering the processing quality and processing efficiency.
- FIG. 5 is a diagram showing the configuration of the laser processing apparatus according to the second embodiment.
- the laser processing apparatus 100B has the same function as the laser processing apparatus 100A.
- the laser processing apparatus 100B includes a processing control apparatus 2B instead of the processing control apparatus 2A and a pulse laser oscillator 1B instead of the pulse laser oscillator 1A, as compared with the laser processing apparatus 100A.
- the machining control device 2B includes a control unit 20 and a power determination unit 13B.
- the control unit 20 is connected to the pulse laser oscillator 1B and the galvano scan mirror 3, and performs the same processing as the processing control device 2A.
- the power determination unit 13B is connected to the resonator 11, the power source 12, and the control unit 20, and performs the same processing as the power determination unit 13A.
- the pulse laser oscillator 1B has a resonator 11 and a power source 12.
- the power determination unit 13B determines whether or not the power source 12 has approached the capacity limit.
- the control unit 20 determines the operating speed of the galvano scan mirror 3. Suppress.
- the power determination unit 13B determines the amount of power of the power source 12 and reduces the positioning speed of the galvano scan mirror 3 based on the determination result. Even when the value approaches the capacity limit, it is possible to perform laser processing on the workpiece 7 without stopping the pulse command value.
- the laser processing apparatus, the processing control apparatus, and the pulse frequency control method according to the present invention are suitable for drilling a workpiece using pulsed laser light.
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Abstract
Description
図1は、実施の形態1に係るレーザ加工装置の構成を示す図である。レーザ加工装置100Aは、プリント配線基板などのワーク(被加工物)7にスルーホールなどの穴あけ加工を行う装置である。本実施の形態のレーザ加工装置100Aは、パルスレーザ発振器1Aの電源12が容量限界に近づいた場合に、ガルバノスキャンミラー3の動作速度を抑制することによって電力が容量限界以上に高くならないよう制御する。
つぎに、図5を用いてこの発明の実施の形態2について説明する。実施の形態2では、電力判定部を、加工制御装置内に配置しておく。図5は、実施の形態2に係るレーザ加工装置の構成を示す図である。レーザ加工装置100Bは、レーザ加工装置100Aと同様の機能を有している。
Claims (7)
- 供給された電力に応じたパルスレーザ光を出力する共振器と、前記共振器に前記電力を供給する電源とを有したパルスレーザ発振器と、
ガルバノエリア内で前記パルスレーザ光の照射位置を位置決めして被加工物上に照射するガルバノスキャンミラーと、
前記ガルバノスキャンミラーの動作と同期して前記パルスレーザ光が出力されるよう前記パルスレーザ発振器および前記ガルバノスキャンミラーを制御する加工制御装置と、
前記電源から前記共振器に供給される電力の電力量を検出するとともに、前記電力量に基づいて前記電源が容量限界に近付いたか否かを判定する電力判定部と、
を備え、
前記加工制御装置は、
前記電力判定部から前記電源が容量限界に近付いたことを示す信号を受信すると、前記電力量の上昇が抑制されるよう前記ガルバノスキャンミラーの位置決め速度を抑制したうえで、前記被加工物へのレーザ加工を継続することを特徴とするレーザ加工装置。 - 前記電力判定部は、前記電源から前記共振器に供給される電流の電流値に基づいて、前記電源の電力量を検出することを特徴とする請求項1に記載のレーザ加工装置。
- 前記加工制御装置は、前記位置決め速度を現在値以下に設定することによって前記位置決め速度を抑制することを特徴とする請求項1または2に記載のレーザ加工装置。
- 前記加工制御装置は、前記電源の電力量を抑制する際には、所定時間だけ前記位置決め速度を抑制した後に、前記位置決め速度の抑制を解除することを特徴とする請求項1~3のいずれか1つに記載のレーザ加工装置。
- 前記加工制御装置は、前記電源の電力量を抑制する際には、前記電力量が所定値まで下がった後に、前記位置決め速度の抑制を解除することを特徴とする請求項1~3のいずれか1つに記載のレーザ加工装置。
- 供給された電力に応じたパルスレーザ光を出力する共振器と前記共振器に前記電力を供給する電源とを有したパルスレーザ発振器と、ガルバノエリア内で前記パルスレーザ光の照射位置を位置決めして被加工物上に照射するガルバノスキャンミラーと、を制御する制御部と、
前記電源が前記共振器に供給する電力の電力量を検出するとともに、前記電力量に基づいて前記電源が容量限界に近付いたか否かを判定する電力判定部と、
を備え、
前記制御部は、前記ガルバノスキャンミラーの動作と同期して前記パルスレーザ光が出力されるよう前記パルスレーザ発振器および前記ガルバノスキャンミラーを制御するとともに、
前記電力判定部から前記電源が容量限界に近付いたことを示す信号を受信すると、前記電力量の上昇が抑制されるよう前記ガルバノスキャンミラーの位置決め速度を抑制したうえで、前記被加工物へのレーザ加工を継続する加工制御装置。 - 供給された電力に応じたパルスレーザ光を出力する共振器と前記共振器に前記電力を供給する電源とを有したパルスレーザ発振器と、ガルバノエリア内で前記パルスレーザ光の照射位置を位置決めして被加工物上に照射するガルバノスキャンミラーと、を制御する制御ステップと、
前記電源が前記共振器に供給する電力の電力量を検出するとともに、前記電力量に基づいて前記電源が容量限界に近付いたか否かを判定する電力判定ステップと、
を含み、
前記制御ステップでは、前記ガルバノスキャンミラーの動作と同期して前記パルスレーザ光が出力されるよう前記パルスレーザ発振器および前記ガルバノスキャンミラーを制御するとともに、
前記電源が容量限界に近付いた場合には、前記電力量の上昇が抑制されるよう前記ガルバノスキャンミラーの位置決め速度を抑制したうえで前記被加工物へのレーザ加工を継続することによって、前記パルスレーザ光の出力周波数を制御することを特徴とするパルス周波数制御方法。
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CN201380002115.8A CN104105568B (zh) | 2013-02-14 | 2013-02-14 | 激光加工装置、加工控制装置及脉冲频率控制方法 |
PCT/JP2013/053512 WO2014125597A1 (ja) | 2013-02-14 | 2013-02-14 | レーザ加工装置、加工制御装置およびパルス周波数制御方法 |
KR1020137035138A KR101425337B1 (ko) | 2013-02-14 | 2013-02-14 | 레이저 가공 장치, 가공 제어 장치 및 펄스 주파수 제어 방법 |
JP2013534509A JP5465363B1 (ja) | 2013-02-14 | 2013-02-14 | レーザ加工装置、加工制御装置およびパルス周波数制御方法 |
TW102123945A TWI530349B (zh) | 2013-02-14 | 2013-07-04 | 雷射加工裝置、加工控制裝置及脈波頻率控制方法 |
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WO2023053932A1 (ja) * | 2021-09-30 | 2023-04-06 | ブラザー工業株式会社 | レーザ加工装置及びレーザ加工方法 |
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- 2013-02-14 KR KR1020137035138A patent/KR101425337B1/ko active IP Right Grant
- 2013-02-14 JP JP2013534509A patent/JP5465363B1/ja active Active
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JP2021098214A (ja) * | 2019-12-23 | 2021-07-01 | 住友重機械工業株式会社 | レーザ加工機の制御装置及びレーザ加工方法 |
JP7339879B2 (ja) | 2019-12-23 | 2023-09-06 | 住友重機械工業株式会社 | レーザ加工機の制御装置及びレーザ加工方法 |
WO2023053932A1 (ja) * | 2021-09-30 | 2023-04-06 | ブラザー工業株式会社 | レーザ加工装置及びレーザ加工方法 |
Also Published As
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JP5465363B1 (ja) | 2014-04-09 |
JPWO2014125597A1 (ja) | 2017-02-02 |
KR101425337B1 (ko) | 2014-08-04 |
CN104105568A (zh) | 2014-10-15 |
TWI530349B (zh) | 2016-04-21 |
CN104105568B (zh) | 2015-10-21 |
TW201431633A (zh) | 2014-08-16 |
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