CN106346141B - A kind of metal-cutting device based on recombination laser beam - Google Patents
A kind of metal-cutting device based on recombination laser beam Download PDFInfo
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- CN106346141B CN106346141B CN201610806170.8A CN201610806170A CN106346141B CN 106346141 B CN106346141 B CN 106346141B CN 201610806170 A CN201610806170 A CN 201610806170A CN 106346141 B CN106346141 B CN 106346141B
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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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- 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
- B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
- B23K26/0608—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams in the same heat affected zone [HAZ]
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
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- 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 kind of metal-cutting devices based on recombination laser beam, module occurs including first laser, module occurs for second laser, swash combiner module and auxiliary gas module, module output, which occurs, for first laser can make the laser of metal melt metal melt, the laser that metal melt can be discharged in module output occurs for second laser, swash combiner module module occurs to export sharp combiner to be recombination laser beam by first laser generation module output laser and second laser, gas module output action of high-speed airflow is assisted to generate the first recoil strength in metal melt, recombination laser beam acts on metal, it is metal melt that module output laser, which occurs, for first laser by metal melt in recombination laser beam, module output laser occurs for second laser in the second recoil strength of metal surface generation in recombination laser beam, by the first recoil strength and second Metal melt is discharged in recoil strength jointly, and Accelerating Removal speed, reduces re cast layer and residue is formed, and improves laser cutting efficiency and quality.
Description
Technical field
The invention belongs to photoelectron technical fields, and in particular to a kind of metal-cutting device based on recombination laser beam.
Background technique
Since proposing that blow oxygen carries out metal laser cutting, laser cutting technique is because its cutting speed is fast, contactless property, hot shadow
It rings that region is small, thermal deformation is small, extensive adaptability and flexibility, becomes the important modern advanced machining technology of industrial circle.Mesh
Preceding laser cutting technique can be divided into vaporization cutting, anaerobic fusing cutting, the cutting of oxygen fluxingization and controlled fracturing blasting cutting.Laser is cut
The principle for cutting technology is laser action in rapidoprint, and laser energy melts rapidoprint, is discharged by high-speed flow molten
Melt object.Since the fusant velocity of discharge is slower, laser cutting efficiency cannot be improved, easily formation re cast layer, in addition, relying primarily on
High-speed flow is glutinous overleaf the easy slag that causes of fusant is discharged, and forms residue burr, the wind of high-speed flow at the material back side
Speed and direction are very big on the influence of the dynamic accuracy of cutting, and high-speed flow is bigger, influence on dynamic accuracy bigger.
Therefore, laser cutting technique is low in the prevalence of the speed of service at present, dynamic accuracy is poor and cutting section quality
It is not easy the problems such as guaranteeing, in order to further increase product quality and productivity, reduces operating cost, the new pattern laser for needing to propose
Cutter device, to meet growing production needs.
Summary of the invention
The present invention provides a kind of metal-cutting device based on recombination laser beam in view of the foregoing drawbacks, it is intended to solve existing sharp
Light cutter device leads to compared with slow that cutting efficiency is low, the ropy technology of cutting section is asked due to the speed of air-flow discharge fusant
Topic.
To achieve the above object, the present invention provides a kind of metal-cutting device based on recombination laser beam, including first swashs
Module occurs for light, module occurs for second laser, swashs combiner module and auxiliary gas module；Module output occurs for first laser
End is connect with sharp one input terminal of combiner module, and module output end occurs for second laser and another input terminal of sharp combiner module connects
It connects；
Module occurs for the first laser, for exporting the laser that can make metal melt metal melt；
Module occurs for the second laser, for exporting the laser that can exclude metal melt；
The sharp combiner module, for that will can make the laser of metal melt metal melt and metal melting can be excluded
The sharp combiner of object is recombination laser beam；
The auxiliary gas module is used for outbound course high-speed flow identical with recombination laser Shu Fangxiang.
Module output, which occurs, by first laser can make the laser of metal melt metal melt, and mould occurs by second laser
Block exports the laser that can exclude metal melt, and module output laser and second is occurred for first laser by swashing combiner module
Module occurs for laser export sharp combiner to be recombination laser beam, and recombination laser beam acts on metal, first in recombination laser beam
Laser occurs under module output laser action, and metal surface is molten into metal melt, and metal melt is gradually to material internal
Extend, the liquefaction evaporation of small part metal melt, most of metal melt occurs module output laser in second laser and formed
Recoil strength and high-speed flow formed recoil strength collective effect under, in liquid form sputtering discharge, rapidly in metal surface
Hole is formed, after metal surface forms hole, along the direction of cutting, metal phase transports recombination laser and high-speed flow
It is dynamic, form joint-cutting.
Further, further include laser focus module, for recombination laser beam to be focused, swash combiner module output end with
The connection of laser focus module input terminal can promote the power density of recombination laser beam by focusing recombination laser beam, be conducive to
Improve cutting efficiency and quality.
Further, module output mean power occurs for the first laser in 5MW/cm2~50MW/cm2Laser, should
Laser under mean power can cut common metal, such as stainless steel, copper and carbon steel etc..
Further, it is the long pulse impulse of continuous wave laser or pulse width in Millisecond that module, which occurs, for the first laser
Light device.
Further, the second laser generation module output peak power reaches 5000W and pulse width is microsecond
Grade or less laser, can produce bigger recoil strength, be conducive to that metal melt is discharged, improve cutting efficiency and quality.
Further, it is pulse width in Microsecond grade pulse laser below that module, which occurs, for the second laser.
Further, the sharp combiner module is optical-fiber bundling device, the first laser occur module by optical fiber with
The optical-fiber bundling device is connected, and the second laser occurs module and is connected by optical fiber with the optical-fiber bundling device, optical-fiber bundling
Device integrated level is high, and stability is good.
Further, the sharp combiner module is polarization beam combiner, and first laser occurs module output polarization laser and penetrates
Onto polarization bundling device, second laser occurs module output polarization laser and is mapped on polarization beam combiner, and mould occurs for first laser
It is orthogonal with second laser generation module output polarization laser polarization state that block exports polarization laser polarization state.
Further, the sharp combiner module is space bundling device, and first laser occurs module output laser and is mapped to sky
Between on bundling device, second laser occurs module output laser and is mapped on the bundling device of space, and module output occurs for first laser
Laser is vertical with the laser that module output occurs for second laser, and space bundling device is easy to operate, Yi Shixian.
Contemplated above technical scheme through the invention, compared with prior art, obtain it is following the utility model has the advantages that
1, it is made of the laser that module output occurs for the laser and second laser of first laser generation module output compound
Laser beam cuts metal, and the laser that module output occurs for first laser in recombination laser melts metal and forms metal melt,
The laser that module output occurs for second laser can achieve very high surface temperature and form recoil strength, and module occurs by second laser
Under the recoil strength collective effect that the laser-formed recoil strength and high-speed flow of output are formed, make metal melt quickly with liquid
The mode of sputtering is discharged, and reduces the formation of re cast layer and material residues, keeps processing Metal Surface Roughness small, improves laser cutting
The quality of metal, and significantly improve cutting efficiency.
2, using first laser module output laser occurs for the present invention and module output laser composition occurs for second laser
Recombination laser beam cuts metal, reduces the requirement to laser, and reach better cutting effect, significantly reduces the present invention
Cost.
Detailed description of the invention
Fig. 1 the structural representation of present invention；
The structural schematic diagram of Fig. 2 another embodiment of the present invention；
The structural schematic diagram of Fig. 3 another embodiment of the present invention；
The structural schematic diagram of Fig. 4 another embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, the metal-cutting device provided by the invention based on recombination laser beam includes that mould occurs for first laser
Block can melt the laser that metal is metal melt for exporting, and module occurs for second laser, and for exporting, that metal can be discharged is molten
Melt the laser of object, swash combiner module, for module output laser will to occur by first laser and module occurs by second laser
It exporting and swashs combiner for recombination laser beam, first laser occurs module output end and connect with an input terminal of sharp combiner module,
Second laser occurs module output end and connect with another input terminal of sharp combiner module.
Recombination laser beam acts on metal, under the action of module output laser occurs for first laser in recombination laser,
Metal surface is molten into metal melt first, and metal melt gradually extends to material internal, small part metal melt
Liquefaction evaporation, most of metal melt are total in the recoil strength that the laser-formed recoil strength of high-peak power and high-speed flow are formed
Under same-action, sputtering discharge in liquid form, recombination laser beam forms hole in metal surface rapidly, and metal is along cutting
Direction is moved relative to recombination laser and high-speed flow, forms joint-cutting.
Under the recoil strength collective effect formed by the laser-formed recoil strength of high-peak power and high-speed flow, make Jin Jin
Belong to fusant to sputter away in liquid form, reduces the formation of the re cast layer and material residues in cutting process, reduce processing
Material surface roughness improves the quality of laser cut metal material, in addition, mould occurs using by first laser in the present embodiment
The recombination laser beam cutting metal that the laser that module exports forms occurs for the laser of block output and second, and laser is wanted in reduction
It asks, and reaches better cutting effect, significantly reduce cost of the invention.
As another embodiment provided by the invention, the metal-cutting device based on recombination laser beam further includes that laser is poly-
Burnt module forms the recombination laser beam of high power density, swashs the output end of combiner module and swash for focusing recombination laser
The input terminal of light focus module connects, and the recombination laser beam of high power density acts on metal, keeps metal melt metal molten
The rate for melting object improves, and enables to generate bigger recoil strength by second laser generation module output laser, is conducive to faster
Speed discharge metal melt, reduces re cast layer and is formed with material residues, improve Metal Cutting quality.
As another embodiment provided by the invention, the mean power that module output laser occurs for first laser is 5MW/
Cm2~50MW/cm2Laser, the laser under the power can cut common metal, such as stainless steel, copper and carbon steel etc..
As another embodiment provided by the invention, second laser occur module output peak power reach 5000W with
And pulse width is the following laser of Microsecond grade, can produce bigger recoil strength, is conducive to that metal melt is discharged, reduces double teeming
Layer is formed with material residues, improves cutting efficiency and quality.
As shown in Fig. 2, another kind embodiment provided by the invention, continuous wave laser 1 can make to melt metal for exporting
The continuous laser of financial fusant, and continuous wave laser 1 can export high laser energy, be conducive to promote cutting speed and cut
Cut quality, for exporting metal melt can be discharged and pulse width laser below in the micron-scale in pulse laser 2, continuous to swash
Light device 1 is connected by optical fiber with optical-fiber bundling device 3, and pulse laser 2 is connected by optical fiber with optical-fiber bundling device 3, utilizes optical fiber
Bundling device realizes laser beam, is easily installed, and optical-fiber bundling device stability is good, the continuous laser and arteries and veins that continuous wave laser 1 exports
It is recombination laser beam 4 that the pulse laser for rushing the output of laser 2, which closes beam by optical-fiber bundling device 3, and recombination laser beam 4 passes through reflecting mirror
After 5 reflections, direction changes, and the conjunction beam laser beam 4 after direction changes is focused by condenser lens 6, obtains answering for high power density
Laser beam 9 is closed, recombination laser beam 9 acts on metal 10 through protective glass 7, in closing beam laser beam 9 under the action of continuous laser,
Heating metal simultaneously melts metal, forms metal melt, and metal melt gradually extends to material internal, assists gas device 8
The high-speed flow with 9 same direction of recombination laser beam is generated, is formed and is recoiled with pulse laser in the recoil strength that high-speed flow is formed
Under the collective effect of power, so that metal melt sputters discharge in liquid form, hole is quickly formed, after forming hole, gold
Category is moved along the direction of cutting relative to recombination laser and high-speed flow, joint-cutting is formed, in the recombination laser of high power density
Under the action of beam and high-speed flow, accelerate the formation of metal melt, and metal melt is made to sputter discharge in liquid form, subtracts
The formation of few re cast layer and material residues is conducive to promote rate of cutting and quality.
As shown in figure 3, another kind embodiment provided by the invention, polarization continuous wave laser 1, for exporting the continuous of polarization
Laser, polarized pulses laser 2, the pulse laser of the orthogonal polarization of continuous laser polarization state for exporting with polarizing, and arteries and veins
Impulse light impulse length is in the micron-scale hereinafter, be mapped to polarization light combination mirror by the continuous laser of continuous polarization laser 1 output polarization
On 12, it is mapped on polarization light combination mirror 12 by the pulse laser of the output polarization of pulse polarization laser 2, is closed by polarization light combination mirror 12
Beam is recombination laser beam 4, and after the reflection of reflecting mirror 5, direction changes recombination laser beam 4,4 beam of conjunction Shu Jiguang after the change of direction
It is focused using condenser lens 6, obtains the recombination laser 9 of high power density, composite light beam 9 acts on metal through protective glass 7
10, in closing Shu Jiguang 9 under the action of the continuous laser of polarization, heats metal and melt metal, form metal melt, metal
Fusant gradually extends to material internal, and auxiliary gas device 8 generates the high-speed flow with the recombination laser beam same direction, in height
The pulse laser of recoil strength and polarization that fast air-flow is formed is formed under the collective effect of recoil strength, so that metal melt is with liquid
Form sputtering discharge, quickly forms hole, after forming hole, metal is along the direction of cutting relative to recombination laser and high speed
Air motion forms joint-cutting, under the action of the recombination laser beam and high-speed flow of high power density, accelerates the shape of metal melt
At, and metal melt is made to sputter discharge in liquid form, the formation of re cast layer and material residues is reduced, is conducive to promote cutting
Rate and quality.
As shown in figure 4, another kind embodiment provided by the invention, long-pulse laser 1 can melt metal and are for exporting
The Long Pulse LASER of metal melt, Long Pulse LASER are easily achieved, and can reduce the cost of the present embodiment, and Long Pulse LASER is beaten
Onto beam cementing prism 13, pulse laser 2 swashs for exporting the pulse that can be discharged under the pulsewidth length micron order of metal melt
Light, and pulse laser direction is vertical with Long Pulse LASER direction, pulse laser is got on beam cementing prism 13, Long Pulse LASER and arteries and veins
It is recombination laser beam 4 that impulse light, which closes beam by beam cementing prism 13, is realized using beam cementing prism 13 and swashs combiner, easy to operate, easily
It realizes and closes beam, after the reflection of reflecting mirror 5, direction changes laser beam 4, and 4 beam of conjunction Shu Jiguang after the change of direction is using focusing
Lens 6 focus, and obtain the recombination laser 9 of high power density, and composite light beam 9 acts on metal 10 through protective glass 7, are closing Shu Ji
In light 9 under the action of Long Pulse LASER, heats metal and melt metal, form metal melt, metal melt is gradually to material
Expect that internal stretch, auxiliary gas device 8 generate the high-speed flow with the recombination laser beam same direction, is formed in high-speed flow anti-
Impulse force and pulse laser are formed under the collective effect of recoil strength, so that metal melt sputters discharge, quick shape in liquid form
At hole, along the direction of cutting, metal phase moves recombination laser and high-speed flow, forms joint-cutting, high power density
Under the action of recombination laser beam and high-speed flow, the quick formation of metal melt, and splash metal melt in liquid form
Discharge is penetrated, the formation of re cast layer and material residues is reduced, is conducive to promote rate of cutting and quality.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (6)
1. a kind of metal-cutting device based on recombination laser beam characterized by comprising module, second occur for first laser
Laser occurs module, swashs combiner module and auxiliary gas module；Module output end and sharp combiner mould occur for first laser
The connection of one input terminal of block, second laser occur module output end and connect with sharp another input terminal of combiner module；
Module occurs for the first laser, for exporting the laser that can make metal melt metal melt；The first laser
Module output mean power occurs in 5MW/cm2~50MW/cm2Laser；It is continuous wave laser that module, which occurs, for the first laser
Or pulse width is in the long-pulse laser of Millisecond；
Module occurs for the second laser, for exporting the laser that can exclude metal melt；Module occurs for the second laser
Output peak power reaches 5000W and pulse width is the following laser of Microsecond grade；
The sharp combiner module, for that will can make the laser of metal melt metal melt and metal melt can be excluded
Swashing combiner is recombination laser beam；
The auxiliary gas module is used for outbound course high-speed flow identical with recombination laser Shu Fangxiang；It is sent out by second laser
Under the recoil strength collective effect that the laser-formed recoil strength and high-speed flow of raw module output are formed, keep metal melt quick
It is discharged in a manner of liquid sputtering.
2. metal-cutting device according to claim 1, which is characterized in that further include laser focus module, for focusing
Recombination laser beam, the sharp combiner module output end and the input of laser focus module connect.
3. metal-cutting device according to claim 1, which is characterized in that it is that pulse is wide that module, which occurs, for the second laser
Degree is in Microsecond grade pulse laser below.
4. metal-cutting device according to claim 1-3, which is characterized in that the sharp combiner module is light
Fine bundling device, the first laser occur module and are connected by optical fiber with the optical-fiber bundling device, and mould occurs for the second laser
Block is connected by optical fiber with the optical-fiber bundling device.
5. metal-cutting device according to any one of claims 1 to 3, which is characterized in that the sharp combiner module is
Polarization beam combiner, first laser occur module output polarization laser and are mapped on polarization beam combiner, and module output occurs for second laser
Polarization laser is mapped on polarization beam combiner, and module output polarization laser polarization state occurs for first laser and mould occurs for second laser
It is orthogonal that block exports polarization laser polarization state.
6. metal-cutting device according to any one of claims 1 to 3, which is characterized in that the sharp combiner module is
Space bundling device, first laser occur module output laser and are mapped on the bundling device of space, and second laser occurs module and exports laser
It is mapped on the bundling device of space, and the laser that the laser of module output occurs for first laser and module output occurs for second laser hangs down
Directly.
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| CN106862758A (en) * | 2017-03-23 | 2017-06-20 | 天津东方锐镭科技有限责任公司 | A kind of compound standard laser-processing system |
| EP3685954B1 (en) * | 2019-01-22 | 2024-01-24 | Synova S.A. | Method for cutting a workpiece with a complex fluid-jet-guided laser beam |
| CN109894737B (en) * | 2019-04-17 | 2021-02-09 | 深圳信息职业技术学院 | Laser polishing device and method for metal curved surface |
| CN110303257B (en) * | 2019-07-30 | 2024-02-02 | 华中科技大学 | Method and device for separating transparent brittle material by laser composite cutting |
| CN110293326B (en) * | 2019-07-30 | 2021-04-13 | 长沙理工大学 | Method for cutting thick plate by double-beam laser |
| CN112008236A (en) * | 2020-09-09 | 2020-12-01 | 大族激光科技产业集团股份有限公司 | Laser cutting method and laser cutting equipment for ferrite |
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| JP3292021B2 (en) * | 1996-01-30 | 2002-06-17 | 三菱電機株式会社 | Laser processing method and laser processing apparatus |
| JP3522654B2 (en) * | 2000-06-09 | 2004-04-26 | 住友重機械工業株式会社 | Laser processing apparatus and processing method |
| US6664498B2 (en) * | 2001-12-04 | 2003-12-16 | General Atomics | Method and apparatus for increasing the material removal rate in laser machining |
| CN102962585A (en) * | 2012-11-26 | 2013-03-13 | 中国科学院长春光学精密机械与物理研究所 | Semiconductor laser processing machine with light-feedback-proof device |
| EP3110592B1 (en) * | 2014-02-28 | 2020-01-15 | IPG Photonics Corporation | Multple-laser distinct wavelengths and pulse durations processing |
| CN104858551A (en) * | 2015-06-08 | 2015-08-26 | 苏州向隆塑胶有限公司 | Manufacturing method of optical microstructure, machine table and light guide plate of machine table |
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