WO1990015699A1 - Procede destine a empecher la projection erronee du faisceau laser dans un robot a laser - Google Patents
Procede destine a empecher la projection erronee du faisceau laser dans un robot a laser Download PDFInfo
- Publication number
- WO1990015699A1 WO1990015699A1 PCT/JP1990/000681 JP9000681W WO9015699A1 WO 1990015699 A1 WO1990015699 A1 WO 1990015699A1 JP 9000681 W JP9000681 W JP 9000681W WO 9015699 A1 WO9015699 A1 WO 9015699A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser
- robot
- laser beam
- angle
- irradiation
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J19/00—Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
-
- 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
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
- B23K26/0884—Devices involving movement of the laser head in at least one axial direction in at least two axial directions in at least in three axial directions, e.g. manipulators, robots
-
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
- G05B19/4063—Monitoring general control system
-
- 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
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/104—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
Definitions
- the present invention relates to a robot that irradiates a laser beam to a work to perform laser processing such as cutting and welding of the work, and more particularly, to a laser beam erroneous irradiation that can improve the safety of this type of laser robot. Prevention methods.
- An apparatus that irradiates a laser beam to a work to perform various laser processing such as cutting and welding of the work is known. If the laser beam to be radiated toward the work is erroneously radiated from the laser beam machine to the human body or peripheral devices, there is a possibility that the human body may be harmed.
- a portal laser machine equipped with a laser nozzle that can move in the horizontal plane and that can move in the vertical direction the laser beam is emitted vertically from the laser nozzle. Light is not erroneously irradiated far away. Therefore, generally, there is no danger caused by erroneous irradiation of the laser beam in the portal type laser beam machine.
- the laser beam may be erroneously irradiated to a distant place, which is dangerous.
- An object of the present invention is to provide a method for preventing erroneous irradiation of laser light, which can improve the safety of a laser ⁇ -bot.
- the present invention provides The prevention method is applied to a laser robot equipped with a laser beam irradiating section at the end of the arm, and the axis of the laser beam irradiating section is determined based on the joint angle of each joint of the laser robot. Detecting the angle from the horizontal plane (a), comparing the detected angle with a predetermined angle (b), and detecting the laser beam from the laser beam irradiator when the detected angle is smaller than the predetermined angle. (C) prohibiting the irradiation of the light.
- the laser beam irradiating section mounted on the arm of the laser robot and the horizontal plane is smaller than the predetermined angle, the laser beam Since the laser irradiation is prohibited, the laser beam is not accidentally erroneously irradiated to a distant place, and does not harm the human body and peripheral devices. Therefore, the safety of the laser robot can be improved.
- FIG. 1 is a schematic perspective view of a 5-axis laser robot to which a method according to an embodiment of the present invention is applied, partially shown as a block, and FIG. 2 is a robot control of FIG.
- FIG. 3 is a schematic block diagram showing a main part of the apparatus, and FIG. 3 is a front view showing a laser beam erroneous irradiation prevention process executed by a processor of the robot control apparatus.
- a five-axis laser robot to which the method for preventing erroneous irradiation of laser light according to one embodiment of the present invention is applied includes a robot main body 1.
- Robot body 1 is on the floor It has a fixed base 2, a main body 3 slidably disposed on the base 2, and an arm 4 composed of first and second links 5 and 6.
- a laser beam irradiator (laser nozzle in this embodiment) 8 is attached to the tip of the second link 6 via a support 7.
- the laser robot further includes a robot control device 10 and a laser oscillator 30 that is connected to the laser nozzle 8 and generates laser light, and is controlled under the control of the control device 10.
- the robot body 1 is driven to control the position and orientation of the laser nozzle 8 in the robot installation space, and is controlled by an optical cable (not shown) arranged along the arm 4. Then, a laser beam guided from the laser oscillator 30 to the laser nozzle 8 is irradiated from the laser nozzle 8 toward a work (not shown), and laser processing such as cutting of the work is performed. ing.
- the main body 3 is connected to the base 2 via a first joint (not shown) that can rotate integrally with the main body 3, and the first joint is connected to a first servomotor (not shown).
- first joint (not shown) that can rotate integrally with the main body 3, and the first joint is connected to a first servomotor (not shown).
- first servomotor (not shown)
- the first link 5 whose base end is connected to the upper surface of the main body 3 via the second joint 5a, rotates the second joint 5a by a second servomotor (not shown). At this time, it rotates around the axis of the second joint together with the second joint 5 a and swings with respect to the main body 3.
- the second link 6 whose base end is connected to the distal end of the first link 5 via the third joint 6a is connected to the third joint 6a by a third servomotor (not shown).
- the distal end 6 'of the second link 6 is connected to the distal end of the proximal end 6 "of the second link 6 via a fourth joint (not shown), and is connected to a fourth servomotor (not shown).
- a fourth joint not shown
- the nozzle is connected via the fifth joint 7a.
- the laser nozzle 8 connected to the support part 7 is configured to rotate around the axis of the fifth joint when the fifth joint is driven to rotate by a fifth servomotor (not shown).
- the reference numerals 0, W, U, r, ⁇ and the arrows related thereto indicate the joint angles of the first to fifth joints (hereinafter referred to as the first to fifth joint angles) and the rotation directions. Respectively.
- Reference numeral 5 denotes an angle between the axis 8a of the laser nozzle 8 and a horizontal plane (XY plane) (hereinafter, referred to as a laser nozzle angle).
- the robot body 1 is provided with sensors (not shown) for detecting the first to fifth joint angles 0, W, U, r, and ⁇ , respectively (in the present embodiment, the first to fifth servomotors respectively attached to the first to fifth servomotors).
- ⁇ 5th Absolute Encoder the first to fifth joint angles
- the mouth bot control device 10 includes a processor (hereinafter, referred to as a CPU) 11 and a reel storing a control program executed by the CPU.
- a processor hereinafter, referred to as a CPU
- Random memory (ROM) 12 and random access memory for temporarily storing various operation results and various data by CPU 11 (RAM) 13 and a nonvolatile memory 14 for storing a predetermined value 5 ref of a laser nozzle angle ⁇ used in a teaching program and a laser beam erroneous irradiation prevention process described later.
- the memory 14 includes a CM0S memory or a bubble memory backed up by a battery.
- the control device 10 includes an operation panel 15 for performing a teaching operation and various data inputs, and a floppy disk (not shown) storing a teaching program and the like.
- a controller 16 an axis controller 17, a servo circuit 18 connected to the axis controller for driving and controlling each axis servo motor of the robot body 1, and an It further comprises a face 19.
- the teaching program stored in the floppy disk can be transferred to the nonvolatile memory 14 under the control of the disk controller 16 and the CPU 11. ing.
- the elements 12 to 17 and 19 are connected to the CPU 11 via the bus 20.
- the interface 19 is connected to a laser oscillator 30 and an absolute encoder for detecting the first to fifth joint angles, respectively.
- a predetermined value ⁇ ref of the laser nozzle angle 5 is stored in a predetermined storage area of the nonvolatile memory 14 of the laser robot in advance.
- This predetermined value ⁇ 5 ref is at an arbitrary position in the robot installation space as long as the laser nozzle angle ⁇ 5 is less than the predetermined value (ref).
- the laser light is set to a suitable value (for example, 45 degrees) so that the human body and peripheral devices are not harmed by the laser light.
- the laser robot When the power is turned on, the laser robot periodically executes the laser beam erroneous irradiation prevention processing shown in FIG.
- This erroneous irradiation prevention process is performed regardless of the robot operation mode (driving stop mode, teaching mode, regeneration operation mode, manual operation mode). If it is set, it will be executed even if the robot is in operation stop state.
- the CPU 11 corresponds to each of the second to fifth absolute encoders and registers (in FIG. ),
- the stored values representing the current second to fifth joint angles W, U, r and) S are read out (step S 1), and the joint angles W, U, r are obtained by the coordinate conversion process.
- the current laser nozzle angle ⁇ is calculated (step S 2).
- the laser nozzle angle 5 does not depend on the first joint angle 0.
- the CPU 11 compares the calculated laser nozzle angle ⁇ with the predetermined value ⁇ ref to determine whether the nozzle angle ⁇ is equal to or smaller than the predetermined value ⁇ ref (step S 3).
- the nozzle angle ⁇ 5 is larger than the predetermined value 5 ref
- the height direction position (Z-axis position) and the height position determined in accordance with the second and third joint angles W and U are determined. It is determined that laser beams emitted from a laser nozzle 8 that assumes a posture determined by the fourth and fifth joint angles r and ⁇ will not harm the human body.
- the CPU 11 operates to allow laser light irradiation.
- the CPU 11 resets the interlock signal sent from the CPU to the laser oscillator 30 via the interface 19 (step S 4).
- the laser oscillator 30 is set to a state capable of laser oscillation, and if the laser oscillator 30 is already in a laser oscillation state, the laser oscillation state of the oscillator 30 is maintained.
- the power of the laser oscillator 30 can be turned on. When the power is on, the power on state is maintained.
- step S 3 the nozzle angle 5 is equal to or smaller than the predetermined value ⁇ 5 ref, and therefore, the position and posture determined according to the second to fourth joint angles.
- the CPU 11 sets an interlock signal (step S5).
- laser oscillator 30 is set to a state in which laser oscillation is disabled. In this embodiment, the power of the laser oscillator 30 is turned off.
- the laser nozzle 8 irradiates the laser beam from the laser nozzle, it may cause harm to the human body, etc., due to a defect in the teaching program or an erroneous operation of the operator during manual operation. Laser irradiation is automatically prohibited when the position and posture are set so that there is a possibility of causing the laser beam.
- one predetermined laser nozzle angle 5 rei is fixedly set, but the horizontal distance between the laser nozzle 8 and the laser light arrival site changes according to the height position of the laser nozzle 8.
- the predetermined value ⁇ 5 ref may be changed according to the position of the laser nozzle in the height direction.
- a predetermined value of the laser nozzle angle suitable for each of the laser nozzle height direction position areas is stored in the lookup table in advance, and step S2 in FIG. 3 and step S2 are performed.
- the tip S3 the height direction position of the laser nozzle (generally, the tool center point) is calculated by a coordinate conversion process, and a predetermined value corresponding to the calculated height direction position is checked. Read from the table.
- the power supply of the laser oscillator 30 is turned off as necessary.
- the irradiation of the laser beam from the laser nozzle 8 is substantially prohibited by other appropriate methods. Is also good.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Robotics (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Laser Beam Processing (AREA)
- Manipulator (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE90907493T DE69005592T2 (de) | 1989-06-14 | 1990-05-28 | Verfahren zum verhindern einer falschen projektion eines laserstrahles in einem laserroboter. |
KR1019900702511A KR970001661B1 (ko) | 1989-06-14 | 1990-05-28 | 레이저 로봇에 있어서의 레이저광 오조사 방지 방법 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1149353A JPH0319789A (ja) | 1989-06-14 | 1989-06-14 | レーザロボットの制御方式 |
JP1/149353 | 1989-06-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990015699A1 true WO1990015699A1 (fr) | 1990-12-27 |
Family
ID=15473274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1990/000681 WO1990015699A1 (fr) | 1989-06-14 | 1990-05-28 | Procede destine a empecher la projection erronee du faisceau laser dans un robot a laser |
Country Status (7)
Country | Link |
---|---|
US (1) | US5093552A (ja) |
EP (1) | EP0428748B1 (ja) |
JP (1) | JPH0319789A (ja) |
KR (1) | KR970001661B1 (ja) |
CA (1) | CA2032524A1 (ja) |
DE (1) | DE69005592T2 (ja) |
WO (1) | WO1990015699A1 (ja) |
Cited By (1)
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---|---|---|---|---|
CN101341008B (zh) * | 2005-12-21 | 2015-08-19 | Abb股份有限公司 | 对机械手工具的位置进行对准和控制的系统和方法 |
Families Citing this family (23)
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US5643714A (en) * | 1986-12-31 | 1997-07-01 | Genelabs Technologies, Inc. | Method and assay for HTLV |
JP2741094B2 (ja) * | 1990-06-26 | 1998-04-15 | 松下電器産業株式会社 | 多関節ロボットの制御方法 |
US5217653A (en) * | 1991-02-18 | 1993-06-08 | Leonid Mashinsky | Method and apparatus for producing a stepless 3-dimensional object by stereolithography |
CA2166804A1 (en) * | 1993-07-09 | 1995-01-19 | B. Edward Ramey | Memory control device for an assay apparatus |
JP2002538971A (ja) * | 1998-09-09 | 2002-11-19 | ジーエスアイ ルモニクス | ロボット的に動作するレーザ・ヘッド |
JP2002224866A (ja) * | 2001-02-06 | 2002-08-13 | Ishikawajima Harima Heavy Ind Co Ltd | レーザ出射停止システム |
DE10160624B4 (de) * | 2001-12-11 | 2011-06-09 | Precitec Kg | Verfahren zur Überwachung der Austrittslage eines Arbeitslaserstrahls bei einem handgeführten Laserbearbeitungsgerät sowie handgeführtes Laserbearbeitungsgerät |
DE10163392B4 (de) * | 2001-12-21 | 2007-06-28 | Audi Ag | Bewegungsgesteuertes Werkzeug mit Sicherheitsabschaltung |
DE10245188B3 (de) * | 2002-09-26 | 2004-09-09 | Elan Schaltelemente Gmbh & Co. Kg | Verfahren zur Überwachung einer eine Energiequelle führenden Vorrichtung insbesondere eines Handhabungsgerätes |
JP2006055954A (ja) * | 2004-08-20 | 2006-03-02 | Fanuc Ltd | レーザ加工用ロボット及びロボットシステム |
DE202005007140U1 (de) * | 2005-05-02 | 2006-09-28 | Kuka Schweissanlagen Gmbh | Sicherheitseinrichtung für Strahleinrichtungen |
SE532695C2 (sv) * | 2008-02-25 | 2010-03-16 | Igems Software Ab | Verktygshållare |
DE202008003143U1 (de) | 2008-03-05 | 2009-07-16 | Kuka Systems Gmbh | Laserbearbeitungseinrichtung |
DE102008030774B4 (de) * | 2008-06-28 | 2013-03-07 | Sikora Gmbh | Verfahren und Vorrichtung zum sicherheitsgerichteten Steuern einer Materialbearbeitungsvorrichtung |
JP6559425B2 (ja) * | 2015-01-06 | 2019-08-14 | 株式会社ダイヘン | レーザ照射制御装置 |
DE102015219369A1 (de) * | 2015-10-07 | 2017-04-13 | Bayerische Motoren Werke Aktiengesellschaft | Sicherheitseinrichtung für eine Strahlbearbeitungsvorrichtung und Verfahren |
US10493544B2 (en) * | 2016-02-05 | 2019-12-03 | Textron Innovations, Inc. | System and method for cutting composite materials |
JP6382901B2 (ja) * | 2016-09-29 | 2018-08-29 | ファナック株式会社 | レーザー加工システム |
CN108415281A (zh) * | 2018-03-16 | 2018-08-17 | 深圳中广核沃尔辐照技术有限公司 | 一种辐照安全联锁控制系统 |
CN111086017B (zh) | 2018-10-24 | 2024-09-13 | 发那科株式会社 | 机器人系统 |
DE102021123783A1 (de) | 2021-09-14 | 2023-03-16 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Verfahren zum Überprüfen eines Laserbearbeitungsvorgangs und zugehörige Laserbearbeitungsmaschine |
WO2023170761A1 (ja) * | 2022-03-07 | 2023-09-14 | ファナック株式会社 | レーザ加工システム、及びレーザ加工方法 |
DE102023106968A1 (de) * | 2023-03-20 | 2024-09-26 | TRUMPF Laser- und Systemtechnik SE | Steuereinheit zur Erteilung einer Laserstrahlfreigabe in einem Lasersystem |
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JPS59134682A (ja) * | 1983-01-24 | 1984-08-02 | ウエスチングハウス エレクトリツク コ−ポレ−シヨン | マニピュレ−タ装置 |
JPS60166483U (ja) * | 1984-04-06 | 1985-11-05 | 児玉化学工業株式会社 | レ−ザロボツトのノズル |
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JPS6448694A (en) * | 1987-08-17 | 1989-02-23 | Mitsubishi Electric Corp | Three dimensional laser machine |
JPH01245988A (ja) * | 1988-03-28 | 1989-10-02 | Nissan Motor Co Ltd | レーザー溶断方法 |
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US4028524A (en) * | 1971-08-06 | 1977-06-07 | The Singer Company | Balancing system for a rotating mass |
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1989
- 1989-06-14 JP JP1149353A patent/JPH0319789A/ja active Pending
-
1990
- 1990-05-28 EP EP90907493A patent/EP0428748B1/en not_active Expired - Lifetime
- 1990-05-28 WO PCT/JP1990/000681 patent/WO1990015699A1/ja active IP Right Grant
- 1990-05-28 US US07/635,492 patent/US5093552A/en not_active Expired - Lifetime
- 1990-05-28 DE DE90907493T patent/DE69005592T2/de not_active Expired - Fee Related
- 1990-05-28 KR KR1019900702511A patent/KR970001661B1/ko active IP Right Grant
- 1990-05-28 CA CA002032524A patent/CA2032524A1/en not_active Abandoned
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JPS59134682A (ja) * | 1983-01-24 | 1984-08-02 | ウエスチングハウス エレクトリツク コ−ポレ−シヨン | マニピュレ−タ装置 |
JPS617086A (ja) * | 1984-03-12 | 1986-01-13 | シンシナテイ・ミラクロン・インコ−ポレ−テツド | レ−ザ−光遮蔽装置 |
JPS60166483U (ja) * | 1984-04-06 | 1985-11-05 | 児玉化学工業株式会社 | レ−ザロボツトのノズル |
JPS63144890A (ja) * | 1986-12-10 | 1988-06-17 | Mitsubishi Heavy Ind Ltd | レ−ザ加工装置 |
JPS63256390A (ja) * | 1987-04-13 | 1988-10-24 | 株式会社東芝 | レ−ザ加工ロボツトの安全装置 |
JPS6448694A (en) * | 1987-08-17 | 1989-02-23 | Mitsubishi Electric Corp | Three dimensional laser machine |
JPH01245988A (ja) * | 1988-03-28 | 1989-10-02 | Nissan Motor Co Ltd | レーザー溶断方法 |
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CN101341008B (zh) * | 2005-12-21 | 2015-08-19 | Abb股份有限公司 | 对机械手工具的位置进行对准和控制的系统和方法 |
Also Published As
Publication number | Publication date |
---|---|
US5093552A (en) | 1992-03-03 |
CA2032524A1 (en) | 1990-12-15 |
KR970001661B1 (ko) | 1997-02-13 |
KR920700095A (ko) | 1992-02-19 |
EP0428748A1 (en) | 1991-05-29 |
DE69005592D1 (de) | 1994-02-10 |
JPH0319789A (ja) | 1991-01-28 |
EP0428748A4 (en) | 1991-12-27 |
EP0428748B1 (en) | 1993-12-29 |
DE69005592T2 (de) | 1994-04-28 |
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