CN107914081A - The method and welder of carbon dioxide laser welding - Google Patents
The method and welder of carbon dioxide laser welding Download PDFInfo
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- CN107914081A CN107914081A CN201711134287.7A CN201711134287A CN107914081A CN 107914081 A CN107914081 A CN 107914081A CN 201711134287 A CN201711134287 A CN 201711134287A CN 107914081 A CN107914081 A CN 107914081A
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- welding
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- carbon dioxide
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Classifications
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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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
-
- 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
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
-
- 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
Abstract
The present invention relates to the method and welder of a kind of welding of carbon dioxide laser.The method of above-mentioned carbon dioxide laser welding is used to weld product.The method of carbon dioxide laser welding includes：By clamping product on welding bench；The weld seam of product is scanned, obtains the path of welding data of product；Welding path data is fitted, obtains the path of welding curve of product；Path of welding curve is divided into multistage path of welding curved unit；Laser head is controlled to carry out carbon dioxide laser welding to weld seam according to multistage path of welding curved unit respectively.Since path of welding curve is divided into multiple shorter path of welding curved units, laser head is set to carry out carbon dioxide laser welding to corresponding weld seam according to every section of welding curved unit, the welding precision of the weld seam of product is substantially increased, solves the problems, such as that the precision that method for laser welding welds product is relatively low.
Description
Technical field
The present invention relates to the technical field of laser welding, method and weldering more particularly to a kind of welding of carbon dioxide laser
Connection device.
Background technology
Laser welding be by the use of high-energy-density laser beam as heat source a kind of high-efficiency and precision welding method.Laser Welding
It is one of importance of Materialbearbeitung mit Laserlicht technology application to connect.It is mainly used for the 1970s welding thin-walled material and low speed
Welding, welding process category heat-conduction-type, i.e. laser emission heated parts surface, surface heat are internally spread by heat transfer,
The parameters such as width, energy, peak power and repetition rate by controlling laser pulse, melt workpiece, are formed specific molten
Pond.Laser welding is applied among industry-by-industry field, such as the manufacture of the product in field of mobile phones.
The precision that traditional method for laser welding welds product is relatively low.
The content of the invention
Based on this, it is necessary to which the problem of precision welded to product for traditional method for laser welding is relatively low, carries
For the method and welder of a kind of welding of carbon dioxide laser.
A kind of method of carbon dioxide laser welding, for being welded to product, the carbon dioxide laser welding
Method includes：
By the clamping product on welding bench；
The weld seam of the product is scanned, obtains the path of welding data of the product；
The path of welding data are fitted, obtain the path of welding curve of the product；
The path of welding curve is divided into multistage path of welding curved unit；
Path of welding curved unit control laser head carries out carbon dioxide laser to the weld seam according to multistage respectively
Welding.
In one of the embodiments, the step of weld seam for scanning the product is specially：
The weld seam of the product is scanned by vision system, to obtain the path of welding data of product.
In one of the embodiments, the number of the path of welding data is multiple, multiple path of welding data
It is spaced apart along the extending direction of the weld seam, makes multiple path of welding data representative；When the number of path of welding data
Mesh is more, and the precision for the path of welding curve being fitted is higher.
In one of the embodiments, before being fitted to the path of welding data, and the production is being scanned
After the weld seam of product, step is further included：
The noise in the path of welding data is removed, avoids the noise in path of welding data from producing interference.
In one of the embodiments, the step of being fitted to the path of welding data be specially：
The path of welding data are fitted according to least square method.
In one of the embodiments, the equal length of adjacent two sections of path of welding curved units.
In one of the embodiments, the path of welding curved unit according to multistage controls the laser head to institute respectively
Stating the step of weld seam carries out carbon dioxide laser welding is specially：
Path of welding curved unit controls the laser head to carry out carbon dioxide to the weld seam according to multistage respectively
Laser welding, while to the weld seam transport of carbon dioxide gas, in order to avoid being aoxidized during laser head welded seam, rise
To protective effect.
In one of the embodiments, the carbon dioxide is blown into the direction of the weld seam and the extension of the weld seam
There are angle between the tangential direction in direction, carbon dioxide is set preferably to be blown into the weld seam of product.
In one of the embodiments, the angle is 30 °~60 °, carbon dioxide is preferably blown into product
In weld seam.
A kind of welder, the method for the carbon dioxide laser welding according to any of the above-described embodiment is to the product
Welded.
The method and welder of above-mentioned carbon dioxide laser welding, during welding product, first by clamping product in weldering
Connect on workbench, product is avoided relative to movable workbench, to ensure the welding precision of product；Then the weld seam of product is scanned,
Obtain the path of welding data of product；Then welding path data is fitted, obtains the path of welding data of product；Then
Path of welding curve is divided into multistage path of welding curved unit, is divided into longer path of welding curve multiple shorter
Path of welding curved unit；Finally curved unit control laser head is welded according to multistage respectively to swash weld seam progress carbon dioxide
Photocoagulation, since path of welding curve is divided into multiple shorter path of welding curved units, makes laser head according to every section of weldering
Connect curved unit and carbon dioxide laser welding is carried out to corresponding weld seam, substantially increase the welding precision of the weld seam of product, solution
The problem of precision that method for laser welding welds product of having determined is relatively low.
Brief description of the drawings
Fig. 1 is the flow chart for the method that the carbon dioxide laser of an embodiment welds；
Fig. 2 is another flow chart of the method for the welding of carbon dioxide laser shown in Fig. 1.
Embodiment
For the ease of understanding the present invention, the method and welding dress welded below with reference to relevant drawings to carbon dioxide laser
Put and be described more fully.The method of carbon dioxide laser welding and the preferred embodiment of welder are given in attached drawing.
But the method and welder of carbon dioxide laser welding can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the method to carbon dioxide laser welding and welding
The disclosure of device more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Herein in the method for carbon dioxide laser welding and the specification of welder
Used term is intended merely to the purpose of description specific embodiment, it is not intended that in the limitation present invention.It is used herein
Term " and/or " include the arbitrary and all combinations of one or more relevant Listed Items.
For example, a kind of method of carbon dioxide laser welding is used to weld product.For example, the carbon dioxide swashs
The method of photocoagulation includes：For example, by the clamping product on welding bench；For example, scanning the weld seam of the product, obtain
To the path of welding data of the product；For example, being fitted to the path of welding data, the welding road of the product is obtained
Diametal curve；For example, the path of welding curve is divided into multistage path of welding curved unit；For example, respectively according to multistage institute
State path of welding curved unit control laser head and carbon dioxide laser welding is carried out to the weld seam.A kind of for example, carbon dioxide
The method of laser welding is used to weld product.The method of the carbon dioxide laser welding includes：By the product clip
Tightly on welding bench；The weld seam of the product is scanned, obtains the path of welding data of the product；To the path of welding
Data are fitted, and obtain the path of welding curve of the product；The path of welding curve is divided into multistage path of welding
Curved unit；Path of welding curved unit control laser head carries out carbon dioxide laser to the weld seam according to multistage respectively
Welding.
As shown in Figure 1, the method for the carbon dioxide laser welding of an embodiment is used to weld product.The dioxy
Changing the method for carbon laser welding includes：
S101, by the clamping product on welding bench, avoiding product relative to movable workbench, to ensure product
Welding precision；For example, product is set to be accurately fixed at welding bench on welding bench clamping product by fixture
On.
S103, scans the weld seam of the product, obtains the path of welding data of the product；
In one of the embodiments, the step S103 for scanning the weld seam of the product is specially：
The weld seam of the product is scanned by vision system, to obtain the path of welding data of product.
In one of the embodiments, the number of the path of welding data is multiple, multiple path of welding data
It is spaced apart along the extending direction of the weld seam, makes multiple path of welding data representative；When the number of path of welding data
Mesh is more, and the precision for the path of welding curve being fitted is higher.For example, scanning the weld seam of the product, step is further included before
Suddenly：Mask plate is set in the product upper cover, the weld seam for making product is in naked state, vision system is only scanned the weld seam of product
Position, so that the path of welding data of product are smaller, improve the fitting speed of path of welding curve, that is, improves the weldering of product
Connect speed；In addition, set mask plate in product upper cover, the situation that dust during laser welding gap splashes injured labour product is reduced, is risen
To protective effect, the welding precision of the weld seam of product is improved.For example, mask plate is pasted on product, mask plate phase is avoided
Moved for product.For example, the step S103 for scanning the weld seam of the product is specially：By vision system to the product
Weld seam is scanned, to obtain the path of welding data of product.The number of the path of welding data is multiple, multiple welderings
Connect path data to be spaced apart along the extending direction of the weld seam, make multiple path of welding data representative；When welding road
The number of footpath data is more, and the precision for the path of welding curve being fitted is higher.
S105, is fitted the path of welding data, obtains the path of welding curve of the product；
Referring also to Fig. 2, in one of the embodiments, before being fitted to the path of welding data, and
After the weld seam of the product is scanned, step is further included：
S104, removes the noise in the path of welding data, avoids the noise in path of welding data from producing interference.Example
Such as, before being fitted to the path of welding data, and after the noise in removing the path of welding data, also
Including step：The path of welding data after denoising are filtered, make path of welding data during fitting less and favourable
In improving Fitting efficiency, the bonding speed of product is improved.
In one of the embodiments, the step S105 being fitted to the path of welding data is specially：
The path of welding data are fitted according to least square method.
S107, multistage path of welding curved unit is divided into by the path of welding curve；
In one of the embodiments, the equal length of adjacent two sections of path of welding curved units, makes every section of path of welding
The length of unit is more uniform.For example, the step S105 being fitted to the path of welding data is specially：According to a most young waiter in a wineshop or an inn
Multiplication is fitted the path of welding data；The equal length of adjacent two sections of path of welding curved units, makes every section of welding
The length of path unit is more uniform.
S109, path of welding curved unit control laser head carries out carbon dioxide to the weld seam according to multistage respectively
Laser welding.
In one of the embodiments, the path of welding curved unit according to multistage controls the laser head to institute respectively
State weld seam carry out carbon dioxide laser welding step S109 be specially：
Path of welding curved unit controls the laser head to carry out carbon dioxide to the weld seam according to multistage respectively
Laser welding, while carbon dioxide is blown to the weld seam, in order to avoid being aoxidized during laser head welded seam, play
Protective effect.For example, the step S105 being fitted to the path of welding data is specially：According to least square method to described
Path of welding data are fitted；The equal length of adjacent two sections of path of welding curved units, makes every section of path of welding unit
Length is more uniform；Path of welding curved unit controls the laser head to carry out dioxy to the weld seam according to multistage respectively
Change carbon laser welding step S109 be specially：Path of welding curved unit controls the laser head pair according to multistage respectively
The weld seam carries out carbon dioxide laser welding, while blows carbon dioxide to the weld seam, in order to avoid laser head welded seam
During aoxidize, play a protective role.
In one of the embodiments, the carbon dioxide is blown into the direction of the weld seam and the extension of the weld seam
There are angle between the tangential direction in direction, carbon dioxide is set preferably to be blown into the weld seam of product.For example, to the weldering
Meeting the step S105 that path data is fitted is specially：The path of welding data are fitted according to least square method；
The equal length of adjacent two sections of path of welding curved units, makes the length of every section of path of welding unit more uniform；Basis respectively
The step of path of welding curved unit described in multistage controls the laser head to carry out carbon dioxide laser welding to the weld seam
S109 is specially：Path of welding curved unit controls the laser head to carry out titanium dioxide to the weld seam according to multistage respectively
Carbon laser welding, while carbon dioxide is blown to the weld seam, in order to avoid being aoxidized during laser head welded seam, rise
To protective effect；The carbon dioxide be blown into the direction of the weld seam and the extending direction of the weld seam tangential direction it
Between there are angle, carbon dioxide is preferably blown into the weld seam of product.
In one of the embodiments, the angle is 30 °~60 °, carbon dioxide is preferably blown into product
In weld seam, so as to preferably protect the weld seam of product.For example, the step S105 being fitted to the path of welding data is specific
For：The path of welding data are fitted according to least square method；The length phase of adjacent two sections of path of welding curved units
Deng making the length of every section of path of welding unit more uniform；Respectively described in the path of welding curved unit control according to multistage
Laser head to the weld seam carry out carbon dioxide laser welding step S109 be specially：The path of welding according to multistage respectively
Curved unit controls the laser head to carry out carbon dioxide laser welding to the weld seam, while blows carbon dioxide to the weld seam
Gas, in order to avoid being aoxidized during laser head welded seam, plays a protective role；The carbon dioxide is blown into described
Angle between the tangential direction of the extending direction of the direction of weld seam and the weld seam is 30 °~60 °, makes carbon dioxide more
It is blown into the weld seam of product well, carbon dioxide is preferably blown into the weld seam of product, so as to preferably protects product
Weld seam.For example, research is found, the carbon dioxide is blown into the direction of the weld seam and the extending direction of the weld seam
When angle between tangential direction is 38.4 °, the situation that the weld seam of product aoxidizes is close to zero, and has the weld seam after welding
There is preferable quality.Further, the carbon dioxide is blown into the direction of the weld seam and the weld seam by predetermined period
Extending direction tangential direction between angle when being 38.4 °, the consumption of carbon dioxide is relatively low and the welding matter of weld seam
Amount is preferable.And for example, research is found, the predetermined period is 3s/ times, and the consumption of carbon dioxide is relatively low and the welding matter of weld seam
Amount is preferable.
The present invention also provides a kind of welder, the side of the carbon dioxide laser welding according to any of the above-described embodiment
Method welds the product.
For example, welding equipment includes rack, welding bench, moving mechanism, laser-welding machine, camera system and control
Device；The welding bench is connected in rack, and the welding bench is used to carry product；The moving mechanism is arranged on rack
On, on the power output end of the moving mechanism, moving mechanism is moved for the laser-welding machine and the camera system
Power output terminal is used to drive the laser-welding machine and the camera system to move relative to the welding bench；Laser welding
Device is used to produce laser beam；The camera system is used to shoot the product, obtains the path of welding data of product；The control
Device is communicated to connect with the control terminal of the camera system, the control terminal of the moving mechanism and the laser-welding machine respectively；Institute
Data control moving mechanism and the laser-welding machine action that controller is gathered according to camera system are stated, moving mechanism is driven laser
Soldering apparatus is moved relative to product, and laser-welding machine carries out carbon dioxide laser welding to the weld seam of product at the same time.
And for example, laser-welding machine includes glass tube, the first resonator frame, output terminal electrode, the second resonator frame, reflection end
Electrode, hot channel, multiple radiating fins and air blower.The glass tube is arranged on the power output end of moving mechanism, institute
State and cavity, the first connecting cavity and the second connecting cavity offered on glass tube, the cavity respectively with first connecting cavity and institute
The connection of the second connecting cavity is stated, and first connecting cavity and second connecting cavity are opened in the both ends of the glass tube respectively；
The first resonator frame is plugged in first connecting cavity；The output terminal electrode be located in first connecting cavity and with institute
State the connection of the first resonator frame；The second resonator frame is plugged in second connecting cavity；The transmitting termination electrode is located at institute
State in the second connecting cavity and be connected with the second resonator frame；The hot channel is surrounded on the outer wall of the glass tube,
And the hot channel is abutted with the glass tube, the hot channel is in the shape of a spiral；Multiple radiating fins are dissipated along described
The extending direction distribution of hot channel；The air blower is arranged on the glass tube, and the air blower is connected with the hot channel,
The air blower is used to extraneous air being pumped into the hot channel.
Cavity is connected with the first connecting cavity and the second connecting cavity respectively, and the first connecting cavity and the second connecting cavity open up respectively
In the both ends of glass tube, the first resonator frame is plugged in the first connecting cavity, and the second resonator frame is plugged in the second connecting cavity,
Output terminal electrode is located in the first connecting cavity and be connected with the first resonator frame, reflection termination electrode be located at the second connecting cavity it is interior and with
Second resonator frame connects, and output terminal electrode and reflection termination electrode are electrically connected with the positive and negative anodes of power supply respectively, the output after energization
Air in termination electrode and reflection end electrode pair cavity produces ionization, to produce carbon dioxide laser beam；Due to hot channel ring
It is around on the outer wall of glass tube, and hot channel is abutted with glass tube, hot channel in the shape of a spiral, conducts the heat of glass tube
To hot channel, air blower is arranged on glass tube, and air blower is connected with hot channel, makes air blower that the external world is opened air
It is pumped into hot channel, air is taken away the heat on hot channel, and the prolonging along hot channel due to multiple radiating fins
Stretch and be distributed on direction, the partial heat on hot channel is carried out heat exchange by radiating fin and extraneous air, improve
The radiating efficiency of hot channel, so that the heat dissipation effect of the glass tube of laser-welding machine is preferable；Above-mentioned laser-welding machine rule
Traditional water-cooled type of cooling has been kept away, has made the small volume of laser-welding machine and is not in the problem of leak is short-circuit.
For example, the first resonator frame and the second resonator frame are removably connected to the both ends of glass tube, make laser-welding machine
Resonator frame can be easy to use with fast assembling-disassembling on glass tube.For example, main ventilation hole and multiple is offered on hot channel
Branched hole, the main ventilation hole are connected with multiple branched holes respectively, and air blower is connected with main ventilation hole, make air blower by the external world
Air pump is become owner of in ventilation hole, since main ventilation hole is connected with multiple branched holes respectively, makes the air portion being pumped into main ventilation hole
Divide and discharged by branched hole, make the heat dissipation effect of hot channel preferable.And for example, multiple branched holes are along between the extending direction of hot channel
Every distribution, the air in main ventilation hole is discharged by multiple branched holes, and the heat everywhere of hot channel is passed through into air
Quick diffusing, improves the radiating efficiency of hot channel.And for example, hot channel includes pipeline body and multiple wind shields, pipeline
Body is abutted with glass tube, and main ventilation hole and multiple branched holes are opened on pipeline body, and multiple wind shields are respectively positioned on main logical
It is connected in air holes and with pipeline body, each wind shield is used for the air in main ventilation hole adjacent to each branched hole, wind shield
Keep off in corresponding branched hole, the air in main ventilation hole is imitated quickly through the heat dissipation in branched hole, improving hot channel
Rate；Multiple radiating fins may be contained within the outer wall of pipeline body, make what the heat part of pipeline body was pumped into by air blower
Air Quick diffusing, partly carries out heat exchange by the air outside radiating fin and pipeline body, makes the heat dissipation of hot channel
Efficiency is higher.
In one of the embodiments, heat-sink shell is provided with the inner wall of the cavity, when making the gas ionization in cavity
The heat of generation is adsorbed on heat-sink shell, can improve the heat transfer efficiency of glass tube.In one of the embodiments, the heat absorption
The thickness of layer is 2mm~3mm, heat-sink shell is had higher heat transfer efficiency.For example, offered on hot channel main ventilation hole and
Multiple branched holes, the main ventilation hole are connected with multiple branched holes respectively, and air blower is connected with main ventilation hole, make air blower outer
The air pump on boundary is become owner of in ventilation hole, since main ventilation hole is connected with multiple branched holes respectively, makes the sky being pumped into main ventilation hole
Gas part is discharged by branched hole, makes the heat dissipation effect of hot channel preferable；Heat-sink shell is provided with the inner wall of the cavity, makes sky
Heat caused by the gas ionization of intracavitary is adsorbed on heat-sink shell, the heat transfer efficiency of glass tube can be improved, due to heat-dissipating pipe
Road is abutted with glass tube, and hot channel has preferable heat dissipation effect, makes the heat on glass tube quick by hot channel
Distribute into air.And for example, multiple branched holes are spaced apart along the extending direction of hot channel, lead to the air in main ventilation hole
Multiple branched hole discharges are crossed, and the heat everywhere of hot channel is improved into dissipating for hot channel by air Quick diffusing
The thermal efficiency.And for example, hot channel includes pipeline body and multiple wind shields, pipeline body and is abutted with glass tube, main ventilation hole with
Multiple branched holes are opened on pipeline body, and multiple wind shields are respectively positioned in main ventilation hole and are connected with pipeline body, each
Adjacent to each branched hole, wind shield is used to keep off the air in main ventilation hole in corresponding branched hole wind shield, makes main ventilation
Air in hole is quickly through the radiating efficiency in branched hole, improving hot channel；Multiple radiating fins may be contained within pipeline
On the outer wall of body, the air Quick diffusing that makes the heat part of pipeline body be pumped into by air blower partly passes through heat radiating fin
Piece carries out heat exchange with the air outside pipeline body, makes the radiating efficiency of hot channel higher.
In one of the embodiments, multiple radiating fins are spaced apart along the extending direction of the hot channel,
Make the heat of each position of hot channel by radiating fin Quick diffusing into air hot channel can be avoided to go out current situation
The situation of portion's overheat.In one of the embodiments, deposited between each radiating fin and the extending direction of the glass tube
In angle, make extending direction reasonable layout of multiple radiating fins along glass tube, so that the structure of laser-welding machine is more tight
Gather.In one of the embodiments, the angle is 30 °~60 °, makes point of multiple radiating fins along the extending direction of glass tube
Cloth is more reasonable.In the present embodiment, the angle is 45 °, makes distribution of multiple radiating fins along the extending direction of glass tube
Preferably.
In one of the embodiments, the hot channel is integrally formed with the glass tube, makes the knot of laser-welding machine
Structure is more compact.In other embodiments, hot channel and glass tube can each self-forming, and by being welded to connect in together.
For example, the hot channel is welded on the outer wall of the glass tube, the outer wall of hot channel and glass tube is in close contact, is carried
Heat-conducting effect between high hot channel and glass tube.
In one of the embodiments, radiating fin shape in a rectangular trapezoid.In other embodiments, radiating fin is also
Can be in leaf shape or other shapes.For example, the radiating fin shape in a rectangular trapezoid；The hot channel and the glass tube
It is integrally formed, makes the structure of laser-welding machine more compact.In one of the embodiments, the thickness of the radiating fin is
3mm~5mm.In the present embodiment, the thickness of the radiating fin is 4mm.
The method and welder of above-mentioned carbon dioxide laser welding, during welding product, first by clamping product in weldering
Connect on workbench, product is avoided relative to movable workbench, to ensure the welding precision of product；Then the weld seam of product is scanned,
Obtain the path of welding data of product；Then welding path data is fitted, obtains the path of welding data of product；Then
Path of welding curve is divided into multistage path of welding curved unit, is divided into longer path of welding curve multiple shorter
Path of welding curved unit；Finally curved unit control laser head is welded according to multistage respectively to swash weld seam progress carbon dioxide
Photocoagulation, since path of welding curve is divided into multiple shorter path of welding curved units, makes laser head according to every section of weldering
Connect curved unit and carbon dioxide laser welding is carried out to corresponding weld seam, substantially increase the welding precision of the weld seam of product, solution
The problem of precision that method for laser welding welds product of having determined is relatively low.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. method of carbon dioxide laser welding, for being welded to product, it is characterised in that the carbon dioxide swashs The method of photocoagulation includes：By the clamping product on welding bench；The weld seam of the product is scanned, obtains the path of welding data of the product；The path of welding data are fitted, obtain the path of welding curve of the product；The path of welding curve is divided into multistage path of welding curved unit；Path of welding curved unit control laser head carries out carbon dioxide laser welding to the weld seam according to multistage respectively.
- 2. the method for carbon dioxide laser welding according to claim 1, it is characterised in that scan the weld seam of the product The step of be specially：The weld seam of the product is scanned by vision system.
- 3. the method for carbon dioxide laser welding according to claim 1, it is characterised in that the path of welding data Number is multiple, and multiple path of welding data are spaced apart along the extending direction of the weld seam.
- 4. the method for carbon dioxide laser welding according to claim 3, it is characterised in that to the path of welding number According to before being fitted, and after the weld seam of the product is scanned, further include step：Remove the noise in the path of welding data.
- 5. the method for carbon dioxide laser welding according to claim 1, it is characterised in that to the path of welding data The step of being fitted be specially：The path of welding data are fitted according to least square method.
- 6. the method for carbon dioxide laser welding according to claim 1, it is characterised in that adjacent two sections of path of welding songs The equal length of line unit.
- 7. the method for carbon dioxide laser welding according to claim 1, it is characterised in that the weldering according to multistage respectively Connecing the step of path curve unit controls the laser head to carry out carbon dioxide laser welding to the weld seam is specially：Path of welding curved unit controls the laser head to carry out carbon dioxide laser to the weld seam according to multistage respectively Welding, while to the weld seam transport of carbon dioxide gas.
- 8. the method for carbon dioxide laser welding according to claim 7, it is characterised in that the carbon dioxide is blown Enter between the tangential direction of the direction of the weld seam and the extending direction of the weld seam that there are angle.
- 9. the method for carbon dioxide laser according to claim 8 welding, it is characterised in that the angle is 30 °~ 60°。
- A kind of 10. welder, it is characterised in that carbon dioxide laser welding according to any one of claim 1 to 9 Method realize.
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Application publication date: 20180417 |