CN107931830A - Method for laser welding, aluminium sheet and laser welding apparatus - Google Patents
Method for laser welding, aluminium sheet and laser welding apparatus Download PDFInfo
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- CN107931830A CN107931830A CN201711134183.6A CN201711134183A CN107931830A CN 107931830 A CN107931830 A CN 107931830A CN 201711134183 A CN201711134183 A CN 201711134183A CN 107931830 A CN107931830 A CN 107931830A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
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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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
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Abstract
The present invention relates to a kind of method for laser welding, aluminium sheet and laser welding apparatus.Above-mentioned method for laser welding is used for welding aluminum sheets, and method for laser welding includes：Aluminium sheet is clamped on workbench；The curved surface of aluminium sheet is scanned, obtains the cloud data of curved surface；The cloud data of curved surface is divided into multiple curved surface data units；Multiple curved surface data units are handled respectively, obtain the corresponding path of welding curve of multiple curved surface data units；The path of welding curve of two neighboring curve data unit is spliced respectively, obtains the path of welding of aluminium sheet；Laser welding head is controlled to weld aluminium sheet according to path of welding.The path of welding curve of the aluminium sheet so obtained differs smaller with the path of welding of actual aluminium sheet, so accurately laser welding head is controlled to weld aluminium sheet according to path of welding, so that the welding precision of aluminium sheet is higher, solve the problems, such as that the precision that method for laser welding welds aluminium sheet is relatively low.
Description
Technical field
The present invention relates to the technical field of aluminium sheet processing, more particularly to a kind of method for laser welding, aluminium sheet and Laser Welding
Connect equipment.
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 mobile phone shell in field of mobile phones.
The precision that traditional method for laser welding welds aluminium sheet is relatively low, i.e., laser welding head acts on the weldering of aluminium sheet
The deviation of seam is larger, especially for the welding of the curved surface of curved aluminium sheet.
The content of the invention
Based on this, it is necessary to the problem of precision welded to aluminium sheet for method for laser welding is relatively low, there is provided a kind of
Method for laser welding, aluminium sheet and laser welding apparatus.
A kind of method for laser welding, for welding aluminum sheets, the method for laser welding includes：
The aluminium sheet is clamped on workbench；
The curved surface of the aluminium sheet is scanned, obtains the cloud data of the curved surface, wherein, the curved surface is S-type；
The cloud data of the curved surface is divided into multiple curved surface data units；
Multiple curved surface data units are handled respectively, multiple curved surface data units is obtained and welds accordingly
Path curve；
The path of welding curve of the two neighboring curve data unit is spliced respectively, obtains the weldering of the aluminium sheet
Connect path；
Laser welding head is controlled to weld the aluminium sheet according to the path of welding.
In one of the embodiments, the aluminium sheet is scanned along the extending direction of the curved surface.
In one of the embodiments, the step of curved surface for scanning the aluminium sheet is specially：
The curved surface of the aluminium sheet is scanned by vision system, to obtain the cloud data of curved surface.
In one of the embodiments, the step of handling respectively multiple curved surface data units includes：
Denoising is carried out to multiple curved surface data units respectively, in case the noise in multiple curved surface data units is to obtaining
Path of welding curve interfere；
Each curved surface data unit after denoising is spliced；
Spliced each curved surface data unit is fitted, the curved surface data unit is obtained and welds accordingly
Path curve.
In one of the embodiments, laser welding head is being controlled to weld the aluminium sheet according to the path of welding
Before, and after splicing respectively to the path of welding curve of the two neighboring curve data unit, step is further included
Suddenly：
The path of welding curve of the two neighboring curve data unit is smoothed respectively, makes two neighboring song
The connection of the path of welding curve of line data cell is more gentle.
In one of the embodiments, the step aluminium sheet being clamped on workbench is specially：
The aluminium sheet is clamped with the workbench, avoiding aluminium sheet from being improved relative to movable workbench by fixture
The welding precision of aluminium sheet.
In one of the embodiments, the step of cloud data of the curved surface being divided into multiple curved surface data units has
Body is：
The cloud data of the curved surface is divided into multiple curved surface data units along the extending direction of the curved surface.
In one of the embodiments, the extension length of the extending direction along the curved surface of multiple curved surface data units
Spend equal.
A kind of aluminium sheet, is welded to obtain using the method for laser welding described in any of the above-described embodiment.
A kind of laser welding apparatus, the method for laser welding according to any of the above-described embodiment weld the aluminium sheet
Connect.
Aluminium sheet, is clamped on workbench, avoids aluminium by above-mentioned method for laser welding, aluminium sheet and laser welding apparatus first
Plate improves the welding precision of aluminium sheet relative to movable workbench；Then the curved surface of aluminium sheet is scanned, obtains the point cloud number of curved surface
According to；Then the cloud data of curved surface is divided into multiple curved surface data units；Then multiple curved surface data units are carried out respectively
Processing, obtains the corresponding path of welding curve of multiple curved surface data units；Then respectively to two neighboring curve data unit
Path of welding curve is spliced, and the path of welding curve for obtaining aluminium sheet is spliced, since the cloud data of curved surface being drawn
It is divided into multiple curved surface data units, and multiple curved surface data units is handled respectively, obtains multiple curved surface data unit phases
The path of welding curve answered, the path of welding curve of the aluminium sheet so obtained differ smaller with the path of welding of actual aluminium sheet, this
Sample accurately controls laser welding head to weld aluminium sheet according to path of welding, so that the welding precision of aluminium sheet is higher, solves
The problem of precision that method for laser welding welds aluminium sheet is relatively low.
Brief description of the drawings
Fig. 1 is the flow chart of the method for laser welding of an embodiment；
Fig. 2 is the flow chart of the step S107 of the method for laser welding shown in Fig. 1；
Fig. 3 is another flow chart of method for laser welding shown in Fig. 1.
Embodiment
For the ease of understanding the present invention, method for laser welding, aluminium sheet and laser welding are set below with reference to relevant drawings
It is standby to be described more fully.The preferred embodiment of method for laser welding, aluminium sheet and laser welding apparatus is given in attached drawing.But
It is that method for laser welding, aluminium sheet and laser welding apparatus can be realized in many different forms, however it is not limited to retouched herein
The embodiment stated.On the contrary, the purpose for providing these embodiments makes to method for laser welding, aluminium sheet and laser welding apparatus
Disclosure 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 specification of method for laser welding, aluminium sheet and laser welding apparatus
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 for laser welding is used for welding aluminum sheets；For example, the method for laser welding includes：By the aluminium
Board clamping is on workbench；For example, scanning the curved surface of the aluminium sheet, the cloud data of the curved surface is obtained, wherein, the curved surface
It is S-type；For example, the cloud data of the curved surface is divided into multiple curved surface data units；For example, respectively to multiple curved surfaces
Data cell is handled, and obtains multiple corresponding path of welding curves of the curved surface data unit；For example, respectively to adjacent two
The path of welding curve of a curve data unit is spliced, and obtains the path of welding of the aluminium sheet；For example, according to described
Path of welding control laser welding head welds the aluminium sheet.For example, a kind of method for laser welding is used for welding aluminum sheets, institute
Stating method for laser welding includes：The aluminium sheet is clamped on workbench；The curved surface of the aluminium sheet is scanned, obtains the curved surface
Cloud data, wherein, the curved surface is S-type；The cloud data of the curved surface is divided into multiple curved surface data units；It is right respectively
Multiple curved surface data units are handled, and obtain multiple corresponding path of welding curves of the curved surface data unit；Respectively
The path of welding curve of the two neighboring curve data unit is spliced, obtains the path of welding of the aluminium sheet；According to
The path of welding control laser welding head welds the aluminium sheet.
As shown in Figure 1, the method for laser welding of an embodiment is used for welding aluminum sheets, the method for laser welding includes：
S101, the aluminium sheet is clamped on workbench；
S103, scans the curved surface of the aluminium sheet, obtains the cloud data of the curved surface, wherein, the curved surface is S-type, point
Cloud data are that the profile of curved surface is formed in the form of point data；
S105, multiple curved surface data units are divided into by the cloud data of the curved surface, and the cloud data of curved surface is drawn
Manage office；
S107, is respectively handled multiple curved surface data units, and it is corresponding to obtain multiple curved surface data units
Path of welding curve, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surfaces
Data cell is handled, and division processing is carried out to the cloud data of curved surface can improve the processing accuracy of cloud data of curved surface
And processing speed；
S109, respectively splices the path of welding curve of the two neighboring curve data unit, obtains the aluminium
The path of welding of plate, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface numbers
Handled according to unit, obtain the corresponding path of welding curve of multiple curved surface data units, the welding road of the aluminium sheet so obtained
Diametal curve differs smaller with the path of welding of actual aluminium sheet；
S111, controls laser welding head to weld the aluminium sheet, due to the welding of aluminium sheet according to the path of welding
Path curve differs smaller with the path of welding of actual aluminium sheet, and laser welding head is so accurately controlled according to path of welding to aluminium sheet
Welded, so that the welding precision of aluminium sheet is higher, it is relatively low to solve the precision that method for laser welding welds aluminium sheet
The problem of.
In one of the embodiments, the aluminium sheet is scanned along the extending direction of the curved surface, greatly reduced
The scanning difficulty of the curved surface of aluminium sheet, and the obtained cloud data of curved surface of scanning and the true form of curved surface are adapted.
In one of the embodiments, the step S103 for scanning the curved surface of the aluminium sheet is specially：
The curved surface of the aluminium sheet is scanned by vision system, to obtain the cloud data of curved surface, obtains scanning
Curved surface cloud data precision it is higher.
As shown in Fig. 2, in one of the embodiments, the step of processing respectively multiple curved surface data units
S107 includes：
Multiple curved surface data units are carried out denoising by S107A respectively, in order to avoid the noise in multiple curved surface data units
Obtained path of welding curve is interfered, makes the precision of path of welding curve higher；
S107B, splices each curved surface data unit after denoising, is conducive to improve curved surface data unit
It is fitted speed；
S107C, is fitted spliced each curved surface data unit, it is corresponding to obtain the curved surface data unit
Path of welding curve.
As shown in figure 3, in one of the embodiments, laser welding head is being controlled to the aluminium according to the path of welding
Before plate is welded, and respectively the path of welding curve of the two neighboring curve data unit is being carried out splicing it
Afterwards, step is further included：
S110, is respectively smoothed the path of welding curve of the two neighboring curve data unit, makes adjacent
The connection of the path of welding curve of two curve data units is more gentle.For example, the method for laser welding includes：S101,
The aluminium sheet is clamped on workbench；S103, scans the curved surface of the aluminium sheet, obtains the cloud data of the curved surface；S105,
The cloud data of the curved surface is divided into multiple curved surface data units, the cloud data division of curved surface is handled；S107, point
It is other that multiple curved surface data units are handled, multiple corresponding path of welding curves of the curved surface data unit are obtained,
Since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface data units at
Reason, division processing is carried out to the cloud data of curved surface can improve the processing accuracy and processing speed of cloud data of curved surface；
S109, respectively splices the path of welding curve of the two neighboring curve data unit, obtains the welding of the aluminium sheet
Path, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface data units into
Row processing, obtains the corresponding path of welding curve of multiple curved surface data units, the path of welding curve of the aluminium sheet so obtained with
The path of welding difference of actual aluminium sheet is smaller；S110, respectively to the path of welding curve of the two neighboring curve data unit
It is smoothed, makes the connection of the path of welding curve of two neighboring curve data unit more gentle.S111, according to described
Path of welding control laser welding head welds the aluminium sheet, due to the weldering of the path of welding curve and actual aluminium sheet of aluminium sheet
It is smaller to connect path difference, so accurately controls laser welding head to weld aluminium sheet according to path of welding, so that aluminium sheet
Welding precision is higher, solves the problems, such as that the precision that method for laser welding welds aluminium sheet is relatively low.
In one of the embodiments, it is specially by the step S101 that the aluminium sheet is clamped on workbench：
The aluminium sheet is clamped with the workbench, avoiding aluminium sheet from being improved relative to movable workbench by fixture
The welding precision of aluminium sheet.For example, the method for laser welding includes：The aluminium sheet is clamped and the workbench by fixture
On, aluminium sheet is avoided relative to movable workbench, improves the welding precision of aluminium sheet；The curved surface of the aluminium sheet is scanned, is obtained described
The cloud data of curved surface；The cloud data of the curved surface is divided into multiple curved surface data units, by the cloud data of curved surface
Division is handled；Multiple curved surface data units are handled respectively, multiple curved surface data units is obtained and welds accordingly
Path curve is connect, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface datas
Unit is handled, the cloud data of curved surface is carried out division processing can improve curved surface cloud data processing accuracy and place
Manage speed；The path of welding curve of the two neighboring curve data unit is spliced respectively, obtains the weldering of the aluminium sheet
Path is connect, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface data units
Handled, obtain the corresponding path of welding curve of multiple curved surface data units, the path of welding curve of the aluminium sheet so obtained
Differ smaller with the path of welding of actual aluminium sheet；The path of welding curve of the two neighboring curve data unit is carried out respectively
Smoothing processing, makes the connection of the path of welding curve of two neighboring curve data unit more gentle.According to the path of welding
Control laser welding head welds the aluminium sheet, due to the path of welding phase of the path of welding curve and actual aluminium sheet of aluminium sheet
Difference is smaller, so accurately controls laser welding head to weld aluminium sheet according to path of welding, so that the welding precision of aluminium sheet
It is higher, solve the problems, such as that the precision that method for laser welding welds aluminium sheet is relatively low.
In one of the embodiments, the step of cloud data of the curved surface being divided into multiple curved surface data units
S105 is specially：
The cloud data of the curved surface is divided into multiple curved surface data units along the extending direction of the curved surface.For example,
The method for laser welding includes：The aluminium sheet is clamped with the workbench, avoiding aluminium sheet relative to work by fixture
Platform moves, and improves the welding precision of aluminium sheet；The curved surface of the aluminium sheet is scanned, obtains the cloud data of the curved surface；Described in
The cloud data of the curved surface is divided into multiple curved surface data units by the extending direction of curved surface, and the cloud data of curved surface is drawn
Manage office；Multiple curved surface data units are handled respectively, multiple curved surface data units is obtained and welds accordingly
Path curve, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface data lists
Member is handled, the cloud data of curved surface is carried out division processing can improve curved surface cloud data processing accuracy and processing
Speed；The path of welding curve of the two neighboring curve data unit is spliced respectively, obtains the welding of the aluminium sheet
Path, since the cloud data of curved surface is divided into multiple curved surface data units, and respectively to multiple curved surface data units into
Row processing, obtains the corresponding path of welding curve of multiple curved surface data units, the path of welding curve of the aluminium sheet so obtained with
The path of welding difference of actual aluminium sheet is smaller；The path of welding curve of the two neighboring curve data unit is put down respectively
Sliding processing, makes the connection of the path of welding curve of two neighboring curve data unit more gentle.According to the path of welding control
Laser welding head processed welds the aluminium sheet, since the path of welding curve of aluminium sheet is differed with the path of welding of actual aluminium sheet
It is smaller, so accurately control laser welding head to weld aluminium sheet according to path of welding so that the welding precision of aluminium sheet compared with
Height, solves the problems, such as that the precision that method for laser welding welds aluminium sheet is relatively low.
In one of the embodiments, the extension length of the extending direction along the curved surface of multiple curved surface data units
Spend it is equal, make curved surface cloud data divide processing it is relatively simple, and handle needed for time it is shorter.
The present invention also provides a kind of aluminium sheet, using the method for laser welding described in any of the above-described embodiment weld
Arrive.
The present invention also provides a kind of laser welding apparatus, and the method for laser welding according to any of the above-described embodiment is to institute
Aluminium sheet is stated to be welded.
For example, laser welding apparatus includes pedestal, welding stage, moving mechanism, laser welding head, camera system and controller；
The welding stage is connected on pedestal, and the welding stage is used to carry aluminium sheet；The moving mechanism is arranged on pedestal, the laser welding
On the power output end of the moving mechanism, the power output end of moving mechanism is used to drive for head and the camera system
The laser welding head and the camera system are moved relative to the welding stage；Laser welding head is used to produce laser beam；It is described
Camera system is used to shoot the aluminium sheet, obtains the path of welding data of aluminium sheet；The controller respectively with the camera system,
The control terminal of the moving mechanism and the communication connection of the control terminal of the laser welding head；The controller is adopted according to camera system
The data control moving mechanism of collection and laser welding head action, make moving mechanism's driving laser welding head be moved relative to aluminium sheet,
And laser welding head at the same time welds the weld seam of aluminium sheet.
And for example, laser welding head 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 head is preferable；Above-mentioned laser welding head rule
Traditional water-cooled type of cooling has been kept away, has made the small volume of laser welding head 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 head
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 head 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 head
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 head more compact.In one of the embodiments, the thickness of the radiating fin is
1mm~2mm.In the present embodiment, the thickness of the radiating fin is 1mm.Further, interval opens up on the radiating fin
There are some V-shaped grooves being arranged side by side, the V-shaped groove has V-type or triangular cross section, and the extending direction of each V-shaped groove
Extending direction with the glass tube in this case, is formd into 82~88 degree of angles, such as 85 or 86 degree of angles in micro
The larger near vertical of some specific surface areas but be not vertical a large amount of trickle air passages so that air is for each radiating fin
For not only there is larger exchange specific surface area, and can receive oblique pull to power-assisted with lifted cross-ventilation heat dissipation effect
Fruit, the heat dissipation effect more perpendicular than the extending direction of the V-shaped groove and the extending direction of the glass tube can about lift 8%
~11%.
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 for laser welding, for welding aluminum sheets, it is characterised in that including：The aluminium sheet is clamped on workbench；The curved surface of the aluminium sheet is scanned, obtains the cloud data of the curved surface, wherein, the curved surface is S-type；The cloud data of the curved surface is divided into multiple curved surface data units；Multiple curved surface data units are handled respectively, obtain multiple corresponding path of welding of curved surface data unit Curve；The path of welding curve of the two neighboring curve data unit is spliced respectively, obtains the welding road of the aluminium sheet Footpath；Laser welding head is controlled to weld the aluminium sheet according to the path of welding.
- 2. method for laser welding according to claim 1, it is characterised in that along the extending direction of the curved surface to the aluminium Plate is scanned.
- 3. method for laser welding according to claim 1, it is characterised in that the step of scanning the curved surface of the aluminium sheet is specific For：The curved surface of the aluminium sheet is scanned by vision system.
- 4. method for laser welding according to claim 1, it is characterised in that respectively to multiple curved surface data units into The step of row processing, includes：Denoising is carried out to multiple curved surface data units respectively；Each curved surface data unit after denoising is spliced；Spliced each curved surface data unit is fitted, obtains the corresponding path of welding of curved surface data unit Curve.
- 5. method for laser welding according to claim 1, it is characterised in that Laser Welding is being controlled according to the path of welding Before connector welds the aluminium sheet, and respectively to the path of welding curve of the two neighboring curve data unit After being spliced, step is further included：The path of welding curve of the two neighboring curve data unit is smoothed respectively.
- 6. method for laser welding according to claim 1, it is characterised in that the step being clamped in the aluminium sheet on workbench It is rapid to be specially：By fixture by aluminium sheet clamping and the workbench.
- 7. method for laser welding according to claim 1, it is characterised in that be divided into the cloud data of the curved surface more The step of a curved surface data unit is specially：The cloud data of the curved surface is divided into multiple curved surface data units along the extending direction of the curved surface.
- 8. method for laser welding according to claim 7, it is characterised in that multiple curved surface data units along described The development length of the extending direction of curved surface is equal.
- 9. a kind of aluminium sheet, it is characterised in that welded using method for laser welding described in any item of the claim 1 to 8 Obtain.
- A kind of 10. laser welding apparatus, it is characterised in that method for laser welding according to any one of claim 1 to 8 The aluminium sheet is welded.
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| CN201711134183.6A CN107931830A (en) | 2017-11-16 | 2017-11-16 | Method for laser welding, aluminium sheet and laser welding apparatus |
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| CN201711134183.6A CN107931830A (en) | 2017-11-16 | 2017-11-16 | Method for laser welding, aluminium sheet and laser welding apparatus |
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| CN201711134183.6A Withdrawn CN107931830A (en) | 2017-11-16 | 2017-11-16 | Method for laser welding, aluminium sheet and laser welding apparatus |
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| CN109514133A (en) * | 2018-11-08 | 2019-03-26 | 东南大学 | A kind of autonomous teaching method of welding robot 3D curved welding seam based on line-structured light perception |
| CN110315249A (en) * | 2019-06-28 | 2019-10-11 | 中国地质大学（武汉） | Space right-angle weld seams shaped zigzag line based on line laser structured light is fitted system |
| WO2020076922A1 (en) * | 2018-10-12 | 2020-04-16 | Teradyne, Inc. | System and method for weld path generation |
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