CN105983781A - Control system capable of increasing YAG laser welding quality - Google Patents
Control system capable of increasing YAG laser welding quality Download PDFInfo
- Publication number
- CN105983781A CN105983781A CN201510394614.7A CN201510394614A CN105983781A CN 105983781 A CN105983781 A CN 105983781A CN 201510394614 A CN201510394614 A CN 201510394614A CN 105983781 A CN105983781 A CN 105983781A
- Authority
- CN
- China
- Prior art keywords
- voice coil
- expanding lens
- beam expanding
- coil motor
- control system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B23K26/073—Shaping the laser spot
-
- 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
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a control system capable of increasing the YAG laser welding quality. An MCU is unidirectionally and electrically connected with a voice coil motor driver through D/A conversion, the voice coil motor driver is unidirectionally and electrically connected with a voice coil motor, the voice coil motor is unidirectionally and electrically connected with a beam expander, the beam expander is unidirectionally and electrically connected with the voice coil driver through position feedback, a light spot correction interpolation table is solidified in an EEPROM in the MCU, an xenon lamp is arranged right above a laser crystal, a reflector is arranged on the right side of the beam expander in the inclined angle of 45 degrees, a composite condensing lens is arranged right below the reflector, and a workpiece is arranged right below the composite condensing lens. The control system dynamically adjusts the beam expander through controlling of the voice coil motor, so that the light spot of each welding point can be controlled, the size of the welding light spots can be kept constant during the whole period; meanwhile the control system cooperates with an automatic two-dimensional worktable to dynamically adjust the beam expander to achieve three-dimensional welding in a certain range. The control system can be integrated in a YAG laser welding power supply control system and also can be used as an independent control system to cooperate with the YAG laser welding power supply control system.
Description
Technical field
The invention belongs to Laser applications in industry technical field, be specifically related to a kind of control system improving YAG Laser Welding Quality
System.
Background technology
The YAG laser-beam welding machine applied on the market at present all also exists a kind of universal shortcoming: when laser welding is in higher welding
When working under frequency and higher laser power, owing to xenon lamp exists internal resistance, substantial amounts of heat when big electric current flows through xenon lamp, can be produced
Amount, owing to the response of refrigeration system relatively lags behind, it is impossible to the temperature keeping laser cavity is temperature constant state, and laser crystal will be through
Crossing from cold conditions to a hot process, laser crystal can produce the problem expanded with heat and contract with cold, thus causes laser welding hot spot to produce
Raw significantly change, produces serious influence to the welding quality of workpiece.
The regulation of present laser bonding machine beam expanding lens has manually regulation and drives the semi-automatic regulative mode of beam expanding lens with stepper motor,
Although both modes can regulate the size of weld pads hot spot, but can't resolve caused by the fuel factor of laser crystal
The phenomenon changed from small to big such as Fig. 1 solder joint hot spot；Stepper motor is driven beam expanding lens, on-line tuning solution can be carried out in theory
The certainly uniformity of hot spot, but when welding frequency is higher, owing to stepper motor acceleration-deceleration is relatively slow, do not respond high-frequency
Online high speed that is lower and that carry out regulates beam expanding lens.
Content of the invention
It is an object of the invention to provide a kind of control system improving YAG Laser Welding Quality, to solve above-mentioned background technology
The problem of middle proposition.
For achieving the above object, the present invention provides following technical scheme: a kind of control system improving YAG Laser Welding Quality
System, including MCU, voice coil motor driver, voice coil motor, beam expanding lens, facula correction interpolation table, front-reflection eyeglass,
Back reflection eyeglass, xenon lamp, speculum, complex focusing mirror and workpiece, described MCU passes through D/A and voice coil motor driver
Unidirectional electric connection, described voice coil motor driver and the unidirectional electric connection of voice coil motor, described voice coil motor and beam expanding lens list
Electrotropism connects, and described beam expanding lens drives the unidirectional electric connection of electrical equipment, described facula correction interpolation by position feedback and voice coil loudspeaker voice coil
Table is for being solidificated in the internal EEPROM of MCU, and described back reflection eyeglass and front-reflection eyeglass are in vertically be arrangeding in parallel, described
Laser crystals setting is between back reflection eyeglass and front-reflection eyeglass, and described xenon lamp is arranged on the surface of laser crystal, described
Beam expanding lens is arranged on the right of front-reflection eyeglass, and described speculum is 45 ° is arranged on the right of beam expanding lens, described complex focusing
Mirror is arranged on the underface of speculum, and described workpiece setting is in the underface of complex focusing mirror.
Preferably, described beam expanding lens includes beam expanding lens input mirror and beam expanding lens outgoing mirror, and described beam expanding lens input mirror is arranged on a left side
Side, described beam expanding lens outgoing mirror is arranged on right.
The technique effect of the present invention and advantage: the control system of this raising YAG Laser Welding Quality is by control voice coil motor
Dynamic regulation beam expanding lens such that it is able to control the hot spot of each solder joint so that the size of welding hot spot keeps one from start to finish
Cause；Two dimension automatic worktable can also be coordinated simultaneously, realize a range of three-dimensional welding by dynamic regulation beam expanding lens.
This control system can be incorporated in YAG laser welding power control system or swash with YAG as independent control system
Photocoagulation power control system collaborative work.
Brief description
Fig. 1 is present configuration schematic diagram；
Fig. 2 is effective structure schematic diagram of the present invention；
Fig. 3 is the Control system architecture schematic diagram of tradition YAG Laser Welding Quality；
Fig. 4 is present configuration block diagram；
Fig. 5 welds hot spot pictorial diagram before improving；
Fig. 6 welds hot spot pictorial diagram after improving.
In figure: 1 focus, 2 beam expanding lens, 3 speculums, 4 complex focusing mirrors, 5 output beams, 6 workpiece, 7 move
Focus, 8 xenon lamps, 9 laser crystals, 10 beam expanding lens input mirrors, 11 beam expanding lens outgoing mirrors, 12 back reflection eyeglasses, before 13
Reflecting optics, 14 MCU, 15 voice coil motor driver, 16 voice coil motors, 17 facula correction interpolation tables.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of not making creative work
Execute example, broadly fall into the scope of protection of the invention.
The invention provides a kind of control system improving YAG Laser Welding Quality as shown in Figure 1, including MCU is the 14th,
Voice coil motor driver the 15th, voice coil motor the 16th, beam expanding lens the 17th, facula correction interpolation table the 18th, front-reflection eyeglass is the 13rd, anti-afterwards
Penetrate eyeglass the 12nd, xenon lamp the 8th, speculum the 3rd, complex focusing mirror 4 and workpiece 6, it is characterised in that: described MCU 14 passes through
D/A conversion and the unidirectional electric connection of voice coil motor driver 15, described voice coil motor driver 15 is unidirectional with voice coil motor 16
Being electrically connected with, described voice coil motor 16 and the unidirectional electric connection of beam expanding lens 2, described beam expanding lens 2 is fed back and sound by position
Circle drives the unidirectional electric connection of electrical equipment 15, and described facula correction interpolation table 18 is for being solidificated in the internal EEPROM of MCU 14
In, described back reflection eyeglass 12 and front-reflection eyeglass 13 are in vertically be arrangeding in parallel, and described laser crystal 9 is arranged on back reflection
Between eyeglass 12 and front-reflection eyeglass 13, described xenon lamp 8 is arranged on the surface of laser crystal 9, and described beam expanding lens 2 sets
Putting the right at front-reflection eyeglass 13, described beam expanding lens 2 includes beam expanding lens input mirror 10 and beam expanding lens outgoing mirror 11, described
Beam expanding lens input mirror 10 is arranged on left, and described beam expanding lens outgoing mirror 11 is arranged on right, and described speculum 3 is in 45 ° of settings
In the right of beam expanding lens 2, described complex focusing mirror 4 is arranged on the underface of speculum 3, and described workpiece 6 is arranged on compound
The underface of focus lamp 4.
General YAG laser welding in order to obtain preferable lasing efficiency, commonly used shorter laser resonance light path, as
Shown in Fig. 3: focus after complex focusing mirror 4 for the laser beam 1, xenon lamp 8, laser crystal 9, back reflection eyeglass 12,
Front-reflection eyeglass 13, output beam 5 after resonator for the laser, through beam expanding lens 2, (beam expanding lens inputs output beam 5
Mirror 10, beam expanding lens outgoing mirror 11) beam-expanding collimation, after speculum 3, complex focusing mirror 4, focus on workpiece 6,
Focused spot 1.When laser crystal is under cold conditions, output beam 5 beam waist diameter is relatively big, adjusts beam expanding lens input mirror 10,
Moving left and right focus 7 just on workpiece 6, now whole energy of laser all focus on workpiece；When in welding process,
Laser crystal will be by cold conditions to hot transformation, due to the fuel factor of laser crystal so that the beam waist diameter of output beam 5 diminishes,
After beam-expanding collimation focuses on, its focused spot moves up, and solder joint hot spot becomes big accordingly, laser thermal effect change such as figure
Shown in 1, welding solder joint hot spot out is as shown in Figure 5.
Owing to using voice coil motor 16, its output torque is big, and fast response time can be adjusted under high-frequency welded condition online
Joint beam expanding lens 2 adjusts the uniformity of welding hot spot.Being known by Fig. 3, due to the fuel factor of laser crystal, laser welding is burnt
Point can produce mobile upper shifting, thus produce welding hot spot and change from small to big, in order to be welded hot spot uniformly, when welding starts
Can make to move in focus with voice coil motor 16 on-line control beam expanding lens 2, make welding hot spot become larger, often weld one later
Individual, all regulate beam expanding lens 2 and allow welding focus move down, allow welding hot spot diminish a bit, thus can ensure that in whole weldering
Termination process is welded the uniformity of hot spot.Adjusting during beam expanding lens, needing on earth to turn left or toward moving right beam expanding lens
The input many distance of mirror, this is accomplished by off-line and produces a facula correction interpolation table 17, the frequency according to each welding, pulse
Width and welding current size, off-line is tested repeatedly, produces the three-dimensional correction table of a corresponding welding spot size, this
The input parameter opening table is welding frequency, pulse width and three parameters of welding current, and output is exactly that corresponding welding hot spot is big
The distance of little needs movement.Operationally just input parameter online query by welding frequency, pulse width and welding current to look into
Look for table and carry out three-dimensional interpolation computing, obtaining the distance of mobile beam expanding lens input mirror 10 required for each solder joint, and then reach
The purpose of correction.Its operation principle is as shown in Figure 4: master board MCU 14 enters through searching facula correction interpolation table 17
Row interpolation computing, calculating beam expanding lens 2 needs the distance of movement, produces position signalling through D/A conversion and drives to voice coil motor
Device 15, is then driven voice coil motor 16 to drive beam expanding lens 2 to be adjusted on focused spot moving down by voice coil motor driver 15
Dynamic, thus reach the purpose of the size of regulation welding hot spot.Enter the welding hot spot after overcorrect as shown in Figure 6.
According to above solution, if coordinating two Dimensional XY automatic worktable again, move beam expanding lens by voice coil motor 16 defeated
Enter mirror 10 to move up and down to adjust focused spot at Z axis, it is possible to realize the three-dimensional automatic welding in expanding adjusted scope
Connecing, some are had the surface of the work of small change to carry out welding on Z axis by this can obtain a comparatively ideal welding effect.
It finally it is noted that the foregoing is only the preferred embodiments of the present invention, is not limited to the present invention, to the greatest extent
The present invention has been described in detail by pipe with reference to previous embodiment, and for a person skilled in the art, it is still permissible
Technical scheme described in foregoing embodiments is modified, or carries out equivalent to wherein portion of techniques feature, all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's
Within protection domain.
Claims (2)
1. improve a control system for YAG Laser Welding Quality, including MCU (14), voice coil motor driver (15),
Voice coil motor (16), beam expanding lens (17), facula correction interpolation table (18), front-reflection eyeglass (13), back mirror
Piece (12), xenon lamp (8), speculum (3), complex focusing mirror (4) and workpiece (6), it is characterised in that: described
MCU (14) is by D/A conversion and the unidirectional electric connection of voice coil motor driver (15), described voice coil motor driver
(15) with the unidirectional electric connection of voice coil motor (16), described voice coil motor (16) is unidirectional with beam expanding lens (2) electrically to be connected
Connecing, described beam expanding lens (2) drives the unidirectional electric connection of electrical equipment (15), described facula correction by position feedback and voice coil loudspeaker voice coil
Interpolation table (18) for being solidificated in the internal EEPROM of MCU (14), described back reflection eyeglass (12) and front mirror
Piece (13) is in vertically be arrangeding in parallel, and described laser crystal (9) is arranged on back reflection eyeglass (12) and front-reflection eyeglass (13)
Between, described xenon lamp (8) is arranged on the surface of laser crystal (9), and described beam expanding lens (2) is arranged on front mirror
The right of piece (13), described speculum (3) is in 45 ° of rights being arranged on beam expanding lens (2), described complex focusing mirror (4)
Be arranged on speculum (3) away from lower section, described workpiece (6) is arranged on the underface of complex focusing mirror (4).
2. a kind of control system improving YAG Laser Welding Quality according to claim 1, it is characterised in that: institute
State beam expanding lens (2) and include beam expanding lens input mirror (10) and beam expanding lens outgoing mirror (11), described beam expanding lens input mirror (10)
Being arranged on left, described beam expanding lens outgoing mirror (11) is arranged on right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510394614.7A CN105983781A (en) | 2015-07-08 | 2015-07-08 | Control system capable of increasing YAG laser welding quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510394614.7A CN105983781A (en) | 2015-07-08 | 2015-07-08 | Control system capable of increasing YAG laser welding quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105983781A true CN105983781A (en) | 2016-10-05 |
Family
ID=57040275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510394614.7A Pending CN105983781A (en) | 2015-07-08 | 2015-07-08 | Control system capable of increasing YAG laser welding quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105983781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305423A (en) * | 2021-06-18 | 2021-08-27 | 大匠激光科技(苏州)有限公司 | Three-dimensional galvanometer welding head device |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030039920A (en) * | 2001-11-16 | 2003-05-22 | 엘지전자 주식회사 | Apparatus optical pick-up of super thin film form |
| CN101324694A (en) * | 2008-07-28 | 2008-12-17 | 重庆大学 | Flight light path mechanism for automatically regulating focusing parameter |
| CN201205636Y (en) * | 2008-05-26 | 2009-03-11 | 上海市激光技术研究所 | Apparatus for welding tubular heat exchanger by laser scanning |
| CN101439441A (en) * | 2008-12-29 | 2009-05-27 | 广州瑞通千里激光设备有限公司 | Optical fiber laser dynamic focusing vibration mirror scanning type spot welding system and welding method thereof |
| CN201257572Y (en) * | 2008-08-15 | 2009-06-17 | 深圳市华德激光技术有限公司 | Focus position adjustment mechanism of laser template cutting tool |
| CN202963783U (en) * | 2012-12-19 | 2013-06-05 | 温州联迪激光科技有限公司 | Auto-zoom laser head |
| CN203380512U (en) * | 2013-01-22 | 2014-01-08 | 深圳市通发激光设备有限公司 | Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser |
| CN203418239U (en) * | 2013-07-31 | 2014-02-05 | 武汉高能激光设备制造有限公司 | Metal laser cutter |
| CN103779774A (en) * | 2014-01-28 | 2014-05-07 | 工业和信息化部电子第五研究所 | Semiconductor laser stack end pump solid-state laser device |
| CN104275550A (en) * | 2013-07-10 | 2015-01-14 | 星云电脑股份有限公司 | Laser cutting machine capable of maintaining equal light beam size |
| CN205218290U (en) * | 2015-07-08 | 2016-05-11 | 深圳市普达镭射科技有限公司 | Qualities of YAG laser welding are improved control system |
-
2015
- 2015-07-08 CN CN201510394614.7A patent/CN105983781A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030039920A (en) * | 2001-11-16 | 2003-05-22 | 엘지전자 주식회사 | Apparatus optical pick-up of super thin film form |
| CN201205636Y (en) * | 2008-05-26 | 2009-03-11 | 上海市激光技术研究所 | Apparatus for welding tubular heat exchanger by laser scanning |
| CN101324694A (en) * | 2008-07-28 | 2008-12-17 | 重庆大学 | Flight light path mechanism for automatically regulating focusing parameter |
| CN201257572Y (en) * | 2008-08-15 | 2009-06-17 | 深圳市华德激光技术有限公司 | Focus position adjustment mechanism of laser template cutting tool |
| CN101439441A (en) * | 2008-12-29 | 2009-05-27 | 广州瑞通千里激光设备有限公司 | Optical fiber laser dynamic focusing vibration mirror scanning type spot welding system and welding method thereof |
| CN202963783U (en) * | 2012-12-19 | 2013-06-05 | 温州联迪激光科技有限公司 | Auto-zoom laser head |
| CN203380512U (en) * | 2013-01-22 | 2014-01-08 | 深圳市通发激光设备有限公司 | Laser welding machine provided with device automatically eliminating thermal lens effect of solid state laser |
| CN104275550A (en) * | 2013-07-10 | 2015-01-14 | 星云电脑股份有限公司 | Laser cutting machine capable of maintaining equal light beam size |
| CN203418239U (en) * | 2013-07-31 | 2014-02-05 | 武汉高能激光设备制造有限公司 | Metal laser cutter |
| CN103779774A (en) * | 2014-01-28 | 2014-05-07 | 工业和信息化部电子第五研究所 | Semiconductor laser stack end pump solid-state laser device |
| CN205218290U (en) * | 2015-07-08 | 2016-05-11 | 深圳市普达镭射科技有限公司 | Qualities of YAG laser welding are improved control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305423A (en) * | 2021-06-18 | 2021-08-27 | 大匠激光科技(苏州)有限公司 | Three-dimensional galvanometer welding head device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106498387B (en) | Laser cladding apparatus based on the pre- hot-working slow cooling power of liquid crystal modulation | |
| CN107414293A (en) | A kind of periodic oscillations method for laser welding and weld assembly | |
| CN1267238C (en) | Laser-high frequency induction composite welder and its method | |
| CN105772939A (en) | Laser double-beam welding device and method | |
| CN206717293U (en) | A kind of glass-cutting Optical devices of new type auto change hot spot length and width | |
| KR101416411B1 (en) | Laser welder | |
| CN112518109A (en) | High-frequency laser pulse method applied to dissimilar metal composite heat source welding | |
| CN206204424U (en) | A kind of laser cladding equipment that pre- hot-working slow cooling power is modulated based on polarization compensator | |
| CN109926719B (en) | Method and device for welding copper and copper alloy materials | |
| CN114012111A (en) | Blue light and infrared dual-wavelength coaxial composite laser additive manufacturing device and method | |
| CN103495803A (en) | Laser welding method capable of achieving oval welding spots | |
| CN111168241B (en) | Method for double-beam pulse laser time-sharing induction MAG electric arc directional swinging surfacing | |
| CN205218290U (en) | Qualities of YAG laser welding are improved control system | |
| CN104625350A (en) | Aluminum alloy TIG (tungsten inert gas) welding method | |
| CN208680769U (en) | Multistation lamp pumping laser welding apparatus | |
| CN109909601A (en) | A kind of laser-processing system and method | |
| CN105983781A (en) | Control system capable of increasing YAG laser welding quality | |
| CN109175691A (en) | A kind of welding method of galvanized steel | |
| CN203184843U (en) | Swing laser beam laser and electric arc combined welding head | |
| CN110125502A (en) | A kind of temperature automatically controlled automatic positioning solder system of laser galvanometer and method | |
| CN108161225B (en) | A kind of method for laser welding and compressor | |
| CN216758172U (en) | Blue light infrared dual-wavelength coaxial composite laser additive manufacturing device | |
| CN104942437A (en) | Laser welding machine | |
| CN205852060U (en) | A kind of laser welding system | |
| CN101428521B (en) | Energy compensation process for laser inside-carving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
|
| WD01 | Invention patent application deemed withdrawn after publication |