CN107378240A - A kind of galvanometer laser stitch welding technique - Google Patents
A kind of galvanometer laser stitch welding technique Download PDFInfo
- Publication number
- CN107378240A CN107378240A CN201710596474.0A CN201710596474A CN107378240A CN 107378240 A CN107378240 A CN 107378240A CN 201710596474 A CN201710596474 A CN 201710596474A CN 107378240 A CN107378240 A CN 107378240A
- Authority
- CN
- China
- Prior art keywords
- laser
- galvanometer
- welding technique
- stitch welding
- air
- 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
- B23K26/20—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
- B23K26/02—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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
Abstract
The present invention relates to a kind of galvanometer laser stitch welding technique; technical points are; optical fiber laser injection laser is projected after laser vibration mirror reflected; the laser that laser galvanometer projects penetrates from the lens on protection device of air; finally penetrate on metalwork to be processed; protection device of air is filled with protective gas, and laser galvanometer control laser is threadingly advanced on the machined surface of metalwork to be processed, and described laser has overlapping processing district in being threadingly advanced.Present invention process step is simple, and welding is fine, and welding quality is good.
Description
【Technical field】
The present invention relates to a kind of laser welding process.
【Background technology】
For laser welding in welding field extensive application, existing laser is usually to use laser rays galley proof in welding
Formula is processed, such as straight line, curve etc..Adopt when welding in such a way, corresponding retrofit, it is difficult to meet small weld seam,
The high material of the requirement of high weld strength, particularly reflectivity, when laser reaches machined surface, easily produce reflection, such as thin aluminium
Piece or copper sheet, such welded seam is thick, and heat affecting is serious.
【The content of the invention】
The purpose of the present invention is overcome the deficiencies in the prior art, there is provided the galvanometer that a kind of welding is fine, welding quality is good swashs
Light stitch welding technique.
In order to solve the above problems, the present invention uses following technical scheme：
A kind of galvanometer laser stitch welding technique, it is characterised in that：Optical fiber laser injection laser is passed through into laser vibration mirror reflected
After project, laser galvanometer project laser from protection device of air on lens penetrate, finally penetrate on metalwork to be processed, it is described
Protection device of air be filled with protective gas, described laser galvanometer controls laser on the machined surface of metalwork to be processed before spiral
Enter, described laser has overlapping processing district in being threadingly advanced.
A kind of galvanometer laser stitch welding technique as described above, it is characterised in that：The core diameter of described optical fiber laser
For 8 to 15 μm.
A kind of galvanometer laser stitch welding technique as described above, it is characterised in that：The protection that described protection device of air is filled with
Gas is argon gas.
A kind of galvanometer laser stitch welding technique as described above, it is characterised in that：What described laser spiral path was formed
The radius r of helix is less than or equal to spot diameter D when laser reaches workpiece surface.
A kind of galvanometer laser stitch welding technique as described above, it is characterised in that：The gas outlet of described protection device of air with
Workpiece surface distance is less than or equal to 15mm.
A kind of galvanometer laser stitch welding technique as described above, it is characterised in that：Laser on laser projection to workpieces processing
Spot diameter is less than or equal to 0.15mm.
A kind of galvanometer laser stitch welding technique as described above, it is characterised in that：, it is necessary to adjust adjustment laser galvanometer before processing
Position cause on laser galvanometer for laser project lens plane it is parallel with plane to be processed.
Beneficial effects of the present invention have：Welding hot spot using single-mode laser (direct 15 μm of fibre core) compression laser is straight
Footpath, the energy density of processing is improved, while Laser Processing is that running orbit advances for helix, when laser helical rotation is turn-taked,
There is certain overlay region between two adjacent circles, the hot spot of laser beam projects to workpiece surface inherently has certain diameter, this
Sample just has the overlay region of processing in processing, just have during processing in overlay region and process again, and one avoids laser spots same
Position is burnt for a long time expands heat affected area, and the path of welding of spiral can increase weld seam base contact surface product, two protections to flow slowly
Gas can uniformly completely cut off the external air of machining area, avoid welding bead from aoxidizing, and suppress heat affected area diffusion, and new technology can obtain
Ensure the firmness of welding on the premise of fine welding bead, while be provided with the welding bead surface of metallic luster, especially suitable for fine
Processing.
【Brief description of the drawings】
Fig. 1 is the stereogram of the process equipment of the present invention；
Fig. 2 is the explosive view of the process equipment of the present invention；
Fig. 3 is the exploded view of the protection device of air of the present invention；
Fig. 4 is the fundamental diagram of the laser galvanometer of the present invention；
Fig. 5 is the schematic diagram of the laser running orbit of the present invention.
【Embodiment】
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
As shown in Figures 1 to 5, a kind of galvanometer laser stitch welding technique, equipment adjustment installation is first carried out, by optical fiber laser 1
Laser galvanometer 2, protection device of air 3 are arranged on pedestal 10, and optical fiber laser 1 is by fiber optic conduction, by laser conduction to laser
Galvanometer 2, laser galvanometer 2 are arranged on lifting platform 6, and lifting platform 6 is provided with the horizontal panel 61 for being used for installing laser galvanometer 2, water
Surface plate 61 is provided with horizontal adjustment plate 62, and laser galvanometer 2 is fixed on horizontal adjustment plate 62, and horizontal adjustment plate 62 is provided with spiral shell
Pit 63, interior be provided with of screwed hole 63 can push up horizontal panel 61 and adjust the jackscrew 64 of the levelness of horizontal adjustment plate 62.Before processing, need
The position for adjusting adjustment laser galvanometer 2 to put down with to be processed for the 25 horizontal minute surface of camera lens that laser projects on laser galvanometer 2
Face is parallel, compensates the issuable horizontal error of machined piece processing and installation, tightens the locked current Working position of fixed screw.
Optical fiber laser 1 is projected into laser after laser galvanometer 2 reflects to project, the core diameter of optical fiber laser 1 is 8 to 15 μm,
Belong to tiny optical fiber, be processed to delicate workpieces, laser galvanometer 2 is High Power Laser Welding galvanometer, its operation principle
As shown it has horizontal mirror (Y-axis galvanometer 22) and horizontal mirror (X-axis galvanometer 21), two speculums lead to respectively
Cross motor (23,24) control to rotate, the reflection of laser is so controlled by the compound of both direction, so as to control laser to run
Path.Laser after the internal reflection of laser galvanometer 2 by condenser lens optically focused after project, the laser that laser galvanometer 2 projects is from guarantor
Lens 31 on shield device of air 3 are penetrated, and laser is finally penetrated on metalwork to be processed, the laser on laser projection to workpieces processing
Spot diameter is less than or equal to 0.15mm.Protection device of air 3 is filled with protective gas, and protection gas cavity 30 is set in protection device of air 3,
Entered by inlet gas 35, silencer 34 can be set in air inlet 35, its face work stage 4 of gas outlet 32, workpiece to be processed
It is located in work stage 4, protection gas is inert gas, and preferred scheme is argon gas, and gas outlet 32 is less than or equal to workpiece surface distance
15mm, the anti-oxidation of command range.Laser galvanometer 2 controls laser to be threadingly advanced on the machined surface of metalwork to be processed, laser
There is overlapping processing district 5, laser beam moves in workpiece surface spiral, when helical rotation is to a circle, is rotated further by being threadingly advanced
During next circle, there is an overlay region, the i.e. overlay region of two adjacent rings, the radius r for the helix that laser spiral path is formed
Spot diameter D when reaching workpiece surface less than or equal to laser, such overlay region area can account for more than the 60% of a circle area, by
Hot spot has certain diameter when laser reaches workpiece surface, so means that laser is processed again in overlay region, from
And weld strength is improved, welding quality is improved, within the panel thickness that is particularly suitable for use in 0.15-0.5mm, weld width 0.3mm
Workpiece.
Claims (7)
- A kind of 1. galvanometer laser stitch welding technique, it is characterised in that：Optical fiber laser (1) injection laser is passed through into laser galvanometer (2) Projected after reflection, the laser that laser galvanometer (2) projects penetrates from the lens (31) on protection device of air (3), finally penetrates to be added On work metalwork, described protection device of air (3) is filled with protective gas, and described laser galvanometer (2) controls laser to be processed It is threadingly advanced on the machined surface of metalwork, described laser has overlapping processing district (5) in being threadingly advanced.
- A kind of 2. galvanometer laser stitch welding technique according to claim 1, it is characterised in that：Described optical fiber laser (1) Core diameter be 8 to 15 μm.
- A kind of 3. galvanometer laser stitch welding technique according to claim 1, it is characterised in that：Described protection device of air (3) The protective gas being filled with is argon gas.
- A kind of 4. galvanometer laser stitch welding technique according to claim 1, it is characterised in that：Described laser spiral path institute The radius r of the helix of formation is less than or equal to spot diameter D when laser reaches workpiece surface.
- A kind of 5. galvanometer laser stitch welding technique according to claim 1, it is characterised in that：Described protection device of air (3) Gas outlet (32) and workpiece surface distance be less than or equal to 15mm.
- A kind of 6. galvanometer laser stitch welding technique according to claim 1, it is characterised in that：Laser projection is in workpieces processing Laser spot diameter be less than or equal to 0.15mm.
- A kind of 7. galvanometer laser stitch welding technique according to claim 1, it is characterised in that：, it is necessary to adjust adjustment before processing The position of laser galvanometer (2) causes parallel with plane to be processed for camera lens (25) minute surface of laser injection on laser galvanometer (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710596474.0A CN107378240A (en) | 2017-07-20 | 2017-07-20 | A kind of galvanometer laser stitch welding technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710596474.0A CN107378240A (en) | 2017-07-20 | 2017-07-20 | A kind of galvanometer laser stitch welding technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107378240A true CN107378240A (en) | 2017-11-24 |
Family
ID=60337249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710596474.0A Pending CN107378240A (en) | 2017-07-20 | 2017-07-20 | A kind of galvanometer laser stitch welding technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107378240A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877454A (en) * | 2019-04-11 | 2019-06-14 | 武汉华工激光工程有限责任公司 | The method for laser welding of thin film solar cell electrode |
| CN110238522A (en) * | 2019-07-01 | 2019-09-17 | 深圳市通发激光设备有限公司 | The galvanometer welding system positioned using coaxial vision |
| CN110253146A (en) * | 2019-07-03 | 2019-09-20 | 湖南科技大学 | A kind of high-strength copper Al dissimilar materials double helix welding procedure |
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|---|---|---|---|---|
| US6066830A (en) * | 1998-06-04 | 2000-05-23 | Astronics Corporation | Laser etching of electroluminescent lamp electrode structures, and electroluminescent lamps produced thereby |
| CN201186371Y (en) * | 2008-05-06 | 2009-01-28 | 中国科学院上海光学精密机械研究所 | Numerical control radiator laser stitch welding machine |
| CN103286444A (en) * | 2012-02-22 | 2013-09-11 | 沈阳新松机器人自动化股份有限公司 | Laser butt welding method of silicon steel sheet |
| CN104999179A (en) * | 2015-08-04 | 2015-10-28 | 大族激光科技产业集团股份有限公司 | Laser welding method for large-gap weld |
| CN105149778A (en) * | 2015-07-30 | 2015-12-16 | 江苏大学 | Device and method for eliminating aluminum-steel dissimilar metal laser welding cracks and gas holes |
| CN106495454A (en) * | 2016-12-19 | 2017-03-15 | 华南师范大学 | Picosecond laser glass solder system and method |
| CN106660171A (en) * | 2014-08-08 | 2017-05-10 | 本田技研工业株式会社 | Laser welding device and laser welding method |
-
2017
- 2017-07-20 CN CN201710596474.0A patent/CN107378240A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6066830A (en) * | 1998-06-04 | 2000-05-23 | Astronics Corporation | Laser etching of electroluminescent lamp electrode structures, and electroluminescent lamps produced thereby |
| CN201186371Y (en) * | 2008-05-06 | 2009-01-28 | 中国科学院上海光学精密机械研究所 | Numerical control radiator laser stitch welding machine |
| CN103286444A (en) * | 2012-02-22 | 2013-09-11 | 沈阳新松机器人自动化股份有限公司 | Laser butt welding method of silicon steel sheet |
| CN106660171A (en) * | 2014-08-08 | 2017-05-10 | 本田技研工业株式会社 | Laser welding device and laser welding method |
| CN105149778A (en) * | 2015-07-30 | 2015-12-16 | 江苏大学 | Device and method for eliminating aluminum-steel dissimilar metal laser welding cracks and gas holes |
| CN104999179A (en) * | 2015-08-04 | 2015-10-28 | 大族激光科技产业集团股份有限公司 | Laser welding method for large-gap weld |
| CN106495454A (en) * | 2016-12-19 | 2017-03-15 | 华南师范大学 | Picosecond laser glass solder system and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109877454A (en) * | 2019-04-11 | 2019-06-14 | 武汉华工激光工程有限责任公司 | The method for laser welding of thin film solar cell electrode |
| CN109877454B (en) * | 2019-04-11 | 2021-02-09 | 武汉华工激光工程有限责任公司 | Laser welding method for thin-film solar cell electrode |
| CN110238522A (en) * | 2019-07-01 | 2019-09-17 | 深圳市通发激光设备有限公司 | The galvanometer welding system positioned using coaxial vision |
| CN110253146A (en) * | 2019-07-03 | 2019-09-20 | 湖南科技大学 | A kind of high-strength copper Al dissimilar materials double helix welding procedure |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171124 |
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| RJ01 | Rejection of invention patent application after publication |