CN108907461A - A kind of laser welding system and welding method - Google Patents
A kind of laser welding system and welding method Download PDFInfo
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- CN108907461A CN108907461A CN201810792959.1A CN201810792959A CN108907461A CN 108907461 A CN108907461 A CN 108907461A CN 201810792959 A CN201810792959 A CN 201810792959A CN 108907461 A CN108907461 A CN 108907461A
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- welding
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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
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a kind of laser welding system and welding method, laser welding system includes laser welder, laser beam welding workstation, ultrasonic detection system and control system composition；Laser welder includes manipulator and laser welding head, manipulator connects laser welding head, laser beam welding workstation includes welding table top, stabilizer blade and detection platform, ultrasonic detection system is located at detection platform, when use, workpiece to be welded is fixed on welding table top, laser welder welding above workpiece to be welded, control system control ultrasonic detection system and laser welder move synchronously, real-time detection while welding, and will test data and reach control system, control system adjusts welding parameter in real time according to testing result, improves welding quality.
Description
Technical field
The present invention relates to laser welding field and field of ultrasonic nondestructive detection, more particularly, to a kind of laser welding system
System and welding method.
Background technique
Laser Welding is a kind of novel welding procedure, and there is energy to concentrate, and is splashed small, and appearance of weld is beautiful, it is easy to accomplish
The advantages such as automation, are widely applied in the industrial production.But during Laser Welding longtime running, due to mechanical system
Resetting leads to error accumulation, the thermal deformation occurred in the welding process, and weld before assembling process there are the problem of, can make
It obtains laser welded seam and various defects occurs, therefore laser welded seam is carried out non-destructive testing.
Ultrasonic phased array technology is a kind of novel ultrasonic non-destructive testing technology risen in recent years, is obtained in recent years
The great attention of domestic and foreign scholars, quickly grows.Ultrasonic phased array technology originates from the electromagnetic wave phased-array technique of radar, utilizes
Multichannel instrument is accurately motivated and is received respectively delay control to each array element of array energy transducer, realizes that the angle of acoustic beam is inclined
Turn, focus variations and electron scanning, and then effectively increases defect detection ability and detection efficiency.
Currently, conventional ultrasound detection, which detects laser welded seam, mainly carries out offline inspection, this method in postwelding
Welding workpiece need to be transferred on detection workbench from welding bench, ressemble, detected, taken time and effort.And it welds
Detection can not obtain weldquality information in real time in the welding process afterwards, it is difficult in time according to weldquality problem welding parameters
It adjusts.
Summary of the invention
It is an object of the invention to overcome drawbacks described above of the existing technology, a kind of laser welding system and welding are provided
Method carries out by the way that control system control welding is synchronous with detection, obtains testing result in real time, and adjust in real time according to testing result
Whole welding parameter.Specifically, detection device realizes laser welded seam on-line checking by ultrasonic phased array technology.
To achieve the above object, technical scheme is as follows：
A kind of laser welding system, which is characterized in that including laser welder, laser beam welding workstation, ultrasonic detection system
It is formed with control system；
The laser welder includes manipulator and laser welding head, and manipulator connects laser welding head, and manipulator is by control system
The signal of transmission controls；
The laser beam welding workstation includes welding table top, stabilizer blade and detection platform, and detection platform is located under welding table top
Side is simultaneously parallel to welding table top, and laser beam welding workstation through welding table top and detection platform and is fixed on ground by stabilizer blade；
The ultrasonic detection system includes ultrasonic phase array detection device and ultrasonic phase array detection device kinematic system；
The ultrasonic detection system is located at the detection platform；
The data transmission of the phased array detection device detection is into control system；
The kinematic parameter of the manipulator of the control system control laser welder and welding parameter, the ultrasonic phase of laser welding head
The kinematic parameter of battle array detection device kinematic system is controlled, and receives the detection data of ultrasonic phase array detection device transmission, and according to
Testing result adjusts the kinematic parameter of the manipulator of laser welder and the welding parameter of laser welding head in real time.
Preferably, the ultrasonic phase array detection device kinematic system is three-dimensional motion system, can be transported along tri- axis of X, Y, Z
It is dynamic.
Preferably, the ultrasonic phase array detection device includes ultrasonic phased array transducer and probe medium chamber, and pop one's head in matchmaker
It is situated between intracavitary equipped with medium, ultrasonic phased array transducer is fixedly attached together by coupling liquid and probe medium chamber.
Preferably, ultrasonic phased array transducer is self-focusing linear array transducer.
Preferably, the intracavitary medium being equipped with of the probe medium is water.
Preferably, the fortune of the kinematic parameter of the manipulator of the laser welder and ultrasonic phase array detection device kinematic system
Dynamic parameter is consistent.
Preferably, the manipulator is six axis robot.
Preferably, it welds on table top and locking device is installed, can be used for locking workpiece to be welded.
It is a kind of that the above-mentioned laser welding system is used to carry out method for laser welding, which is characterized in that including with
Lower step：
Step1：Workpiece to be welded is required to be fixed on welding table top according to technique；
Step2：Control system controls robot movement to specified welding position, starts to weld, in the welding process, mechanical
Hand-motion laser welding head is moved above workpiece, and is welded according to the welding parameter that control system is sent；It is same with this
When, control system controls ultrasonic phase array detection device kinematic system and ultrasonic phase array detection device is brought to weld seam,
Ultrasound detection is carried out, and receives the ultrasound detection signal returned, ultrasonic phase array detection device is made to synchronize detection to weld seam；
Step3：After control system receives ultrasound detection signal, real-time analysis processing is carried out, and judges whether to need to adjust
New welding parameter is passed to laser welder, is welded by whole welding condition if you need to adjust.
It can be seen from the above technical proposal that the present invention passes through the ultrasonic detection system butt welding being mounted below welding table top
The state for connecing workpiece is monitored on-line and is fed back in real time, and guarantees the synchronism of welding and detection by control system, can
The purpose realizing synchronous detection, adjusting in time.Therefore, the present invention, which has, improves working efficiency and quality, reduces the amount of doing over again and inspection
Survey the distinguishing feature of time.
Detailed description of the invention
Fig. 1 is the action principle schematic block diagram of the laser welding system in a specific embodiment of the invention；
Fig. 2 is the structural schematic diagram of the laser welding system of a specific embodiment of the invention；
Fig. 3 is the main view of the ultrasonic detection system in laser welding system shown in Fig. 2；
Fig. 4 is the left side view of ultrasonic detection system shown in Fig. 3；
Fig. 5 is the schematic diagram of the cantilever and probe in ultrasonic detection system shown in Fig. 3；
Fig. 6 is the main view of the probe in ultrasonic detection system shown in Fig. 3.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in further detail.
It should be noted that in following specific embodiments, when describing embodiments of the invention in detail, in order to clear
Ground indicates structure of the invention in order to illustrate, spy does not draw to the structure in attached drawing according to general proportion, and has carried out part
Amplification, deformation and simplified processing, therefore, should be avoided in this, as limitation of the invention to understand.
In specific embodiment of the invention below, referring to Fig. 1, and combining Fig. 2.As shown, of the invention swashs
Flush weld welding system, including laser welder 1, laser beam welding workstation 2, ultrasonic detection system 3 and control system composition：
Laser welder includes manipulator 11 and laser welding head 12, and manipulator connects laser welding head, and manipulator is by control system
The signal of transmission controls.Preferably, manipulator 11 is six axis robot, can be carried out to any position of the workpiece of arbitrary shape
Position welding.
Laser beam welding workstation includes welding table top 21, stabilizer blade 22 and detection platform, in the present embodiment, monitor station mask
Body is detection cantilever load table top 23 shown in Fig. 2, welds and is equipped with locking device on table top, can be used for locking to welder
Part, detection cantilever load table top 23 are located at below welding table top and are parallel to welding table top 21, and stabilizer blade 22 is through welding table top 21
Table top 23 is loaded with detection cantilever and laser beam welding workstation 2 is fixed on ground.
In the present embodiment, locking device is the fixed device of profile, workpiece can be pressed on weldering by multiple plum blossom handles 24
On consecutive face.
Ultrasonic detection system includes ultrasonic phase array detection device and ultrasonic phase array detection device kinematic system, preferably
Ground, ultrasonic phase array detection device kinematic system are three-dimensional motion system, can be along X, Y, Z three-axis moving, when detection, ultrasonic phase
Control battle array detection device kinematic system drives ultrasonic phase array detection device to move along Z axis, rises to below workpiece to be welded, and by X,
The movement of Y-axis drives ultrasonic phase array detection device to move horizontally with laser welder.
It is the specific structure of a specific embodiment of ultrasonic detection system with reference to Fig. 3~6.In this embodiment, surpass
Sound phased array detection device kinematic system is three axle suspension arm systems 31, and three axle suspension arm systems are mounted on detection cantilever load table top
On, including cantilever 311, with the parallel horizontal slide rail 1 of detection cantilever load table top, it is vertical with horizontal slide rail one and with inspection
Survey cantilever load table top parallel horizontal slide rail 2 313, vertical slide rail 314 and servo motor 1,2 316 and of servo motor
Servo motor 3 317, cantilever 311 are mounted on horizontal slide rail 1 and can be sliding in the driving lower edge level of servo motor 1
Rail 1 moves back and forth, and horizontal slide rail 1 is mounted on horizontal slide rail 2 313 and can under the driving of servo motor 2 316
It is moved back and forth along horizontal slide rail 2 313, horizontal slide rail 2 313 is mounted in vertical slide rail 314 and can be in servo motor 3 317
It is moved back and forth under driving along vertical slide rail 314.
In the present embodiment, ultrasonic phase array detection device is detection probe 32, is mounted on 31 end of cantilever, including ultrasound
Phase array transducer 321 and probe medium chamber 322, probe medium is intracavitary to be equipped with medium, and ultrasonic phased array transducer 321 passes through coupling
Liquid is closed to be fixedly attached together with probe medium chamber 322；The data transmission that ultrasonic detection system 3 detects is into control system.
In the present embodiment, the probe intracavitary medium being equipped with of medium is water.Because the aerial decaying of sound wave is very big,
Sound wave is difficult to the water cavity by not filling the water.Probe water cavity and workpiece to be detected are fitted closely, guarantees that sound wave can reach weld seam
Position is normally carried out detection.Due to may cause the spilling of water in cantilever moving process, pacify below probe medium chamber
Equipped with drip tray 323.
The movement of the control system control laser welder 1 and the kinematic parameter of welding parameter, ultrasonic detection system 3, and
Receive the detection data of the transmission of ultrasonic detection system 3, and the movement and welding ginseng of adjustment laser welder 1 in real time according to testing result
Number.
In the present embodiment, the kinematic parameter of laser welder 1 and the kinematic parameter of ultrasonic detection system 3 are consistent, and are realized
Welding parameter is analyzed in real time and adjusted in real time to real-time welding, at real-time detection, improves welding quality.
The method for carrying out laser welding using above-mentioned laser welding system, includes the following steps,
Step1：Workpiece to be welded is required to be fixed on welding table top according to technique using locking device；
Step2：Control system controls robot movement to specified welding position, starts to weld, in the welding process, mechanical
Hand-motion laser welding head is moved above workpiece, and is welded according to the welding parameter that control system is sent；It is same with this
When, control system controls ultrasonic phase array detection device kinematic system and ultrasonic phase array detection device is brought to weld seam,
Ultrasound detection is carried out, and receives the ultrasound detection signal returned, ultrasonic phase array detection device is made to synchronize detection to weld seam；
Step3：After control system receives ultrasound detection signal, real-time analysis processing is carried out, and judges whether to need to adjust
New welding parameter is passed to laser welder, is welded by whole welding condition if you need to adjust.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of laser welding system, which is characterized in that including laser welder, laser beam welding workstation, ultrasonic detection system and
Control system composition；
The laser welder includes manipulator and laser welding head, and manipulator connects laser welding head, and manipulator is transmitted by control system
Signal control；
The laser beam welding workstation includes welding table top, stabilizer blade and detection platform, and detection platform is located at below welding table top simultaneously
It is parallel to welding table top, laser beam welding workstation through welding table top and detection platform and is fixed on ground by stabilizer blade；
The ultrasonic detection system includes ultrasonic phase array detection device and ultrasonic phase array detection device kinematic system；
The ultrasonic detection system is located at the detection platform；
The data transmission of the phased array detection device detection is into control system；
The kinematic parameter of the manipulator of the control system control laser welder and welding parameter, the ultrasonic phase array of laser welding head
The kinematic parameter of detection device kinematic system, and receive the detection data of ultrasonic phase array detection device transmission, and according to detection
The kinematic parameter of the manipulator of laser welder and the welding parameter of laser welding head are adjusted when fructufy.
2. laser welding system according to claim 1, which is characterized in that the ultrasonic phase array detection device kinetic system
System is three-dimensional motion system, can be along X, Y, Z three-axis moving.
3. laser welding system according to claim 1, which is characterized in that the ultrasonic phase array detection device includes super
Sound phase array transducer and probe medium chamber, probe medium it is intracavitary be equipped with medium, ultrasonic phased array transducer by coupling liquid with
Probe medium chamber is fixedly attached together.
4. laser welding system according to claim 3, which is characterized in that ultrasonic phased array transducer is self-focusing linear array
Energy converter.
5. laser welding system according to claim 3, which is characterized in that the intracavitary medium being equipped with of the probe medium is
Water.
6. laser welding system according to claim 1, which is characterized in that the movement of the manipulator of the laser welder is joined
Several and ultrasonic phase array detection device kinematic system kinematic parameter is consistent.
7. laser welding system according to claim 1, which is characterized in that the manipulator is six axis robot.
8. laser welding system according to claim 1, which is characterized in that locking device is installed on welding table top, it can
For locking workpiece to be welded.
9. a kind of carry out method for laser welding using any laser welding system of claim 1~8, which is characterized in that
Include the following steps：
Step1：Workpiece to be welded is required to be fixed on welding table top according to technique；
Step2：Control system controls robot movement to specified welding position, starts to weld, in the welding process, manipulator band
Dynamic laser welding head is moved above workpiece, and is welded according to the welding parameter that control system is sent；At the same time, it controls
System control ultrasonic phase array detection device kinematic system processed brings ultrasonic phase array detection device to weld seam, is surpassed
Sound detection, and receive the ultrasound detection signal returned, so that ultrasonic phase array detection device is synchronized detection to weld seam；
Step3：After control system receives ultrasound detection signal, real-time analysis processing is carried out, and judges whether to need to adjust weldering
Technological parameter is connect, if you need to adjust, new welding parameter is passed into laser welder, is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810792959.1A CN108907461A (en) | 2018-07-18 | 2018-07-18 | A kind of laser welding system and welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810792959.1A CN108907461A (en) | 2018-07-18 | 2018-07-18 | A kind of laser welding system and welding method |
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| CN108907461A true CN108907461A (en) | 2018-11-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794660A (en) * | 2018-12-28 | 2019-05-24 | 太仓新思成模具钢有限公司 | A kind of high-precision driving device and its driving method for mould steel |
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| CN105562929A (en) * | 2016-02-23 | 2016-05-11 | 江苏拓平密封科技有限公司 | Brush type seal robot welding system based on ultrasonic detection technology |
| CN106064282A (en) * | 2016-07-13 | 2016-11-02 | 吉林大学 | Joint for resistance spot welding quality ultrasound ripple online monitoring system and method |
| CN106312397A (en) * | 2016-10-12 | 2017-01-11 | 华南理工大学 | Laser vision guided automatic welding track tracking system and method |
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2018
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10326377B3 (en) * | 2003-06-12 | 2004-12-16 | Thyssenkrupp Drauz Gmbh | Laser welding sheet part to profile cross-section with concealed seam(s) involves welding seam along detected path, cooling seam(s), stimulating/heating profile, testing with sensors along test path |
| CN102759570A (en) * | 2012-07-04 | 2012-10-31 | 北京理工大学 | Single-manipulator automatic ultrasonic non-destructive detection device |
| CN103018341A (en) * | 2012-11-29 | 2013-04-03 | 北京理工大学 | High-rigidity three-coordinate scanning frame for scanning sound field of ultrasonic phased array transducer |
| CN105562929A (en) * | 2016-02-23 | 2016-05-11 | 江苏拓平密封科技有限公司 | Brush type seal robot welding system based on ultrasonic detection technology |
| CN106064282A (en) * | 2016-07-13 | 2016-11-02 | 吉林大学 | Joint for resistance spot welding quality ultrasound ripple online monitoring system and method |
| CN106312397A (en) * | 2016-10-12 | 2017-01-11 | 华南理工大学 | Laser vision guided automatic welding track tracking system and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109794660A (en) * | 2018-12-28 | 2019-05-24 | 太仓新思成模具钢有限公司 | A kind of high-precision driving device and its driving method for mould steel |
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