CN106392314A - Laser cladding feeding device - Google Patents
Laser cladding feeding device Download PDFInfo
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- CN106392314A CN106392314A CN201610937029.1A CN201610937029A CN106392314A CN 106392314 A CN106392314 A CN 106392314A CN 201610937029 A CN201610937029 A CN 201610937029A CN 106392314 A CN106392314 A CN 106392314A
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- Prior art keywords
- nozzle
- light
- protective gas
- gas passage
- laser melting
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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
- B23K26/02—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
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- 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
- B23K26/1462—Nozzles; Features related to nozzles
- B23K26/1464—Supply to, or discharge from, nozzles of media, e.g. gas, powder, wire
- B23K26/1476—Features inside the nozzle for feeding the fluid stream through the nozzle
-
- 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
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- 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
- B23K26/703—Cooling arrangements
-
- 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
- B23K26/704—Beam dispersers, e.g. beam wells
Abstract
The invention relates to a laser cladding feeding device and belongs to the field of laser machining. The laser cladding feeding device receives an incident light beam and converts the incident light beam into a focused light beam so that a focus point can be formed on a base material. The laser cladding feeding device comprises a support, a spectroscope, a reflection focus lens and a nozzle, wherein the spectroscope and the reflection focus lens are arranged on the support, and the nozzle is located below the focus lens. The spectroscope divides the incident light beam into at least two reflected light beams, then, the at least two reflected light beams are focused by the reflection focus lens into at least two focused light beams, and the at least two focused light beams form a hollow dark region and a focus. A light path cooking system for enabling a cooling medium to circularly flow so that the support, the spectroscope and the reflection focus lens can be cooled is formed in the laser cladding feeding device, a good cooling effect can be achieved, and then the service life of the support, the service life of the spectroscope and the service life of the reflection focus lens can be prolonged.
Description
Technical field
The present invention relates to a kind of laser melting coating pay-off, belong to field of laser processing.
Background technology
In advanced laser machining forming manufacturing technology, there is a key technology, will laser pass with being melt synchronous material
Transport to and shape position, and so that metal material continuously, accurately, is equably put into and make scanning fortune by desired trajectory on machined surface
In dynamic focal beam spot, realize light material and accurately couple.Material carries out conversion, instant melting the shape of luminous energy and heat energy in light beam
Become molten bath, complete the metallurgical process of the rapid melting solidification of material.The feeding method of domestic and foreign current can be divided into the outer wire feed of light
With wire feed in light.
The structure of the outer wire feed of light as shown in figure 1, it adopts unilateral wire feed, in existing Laser Overlaying cladding or welding method
In, the laser beam 11 launched by laser instrument is focused mirror 110 and is focused into cone-shaped beam 12, but, due to wire-feeding pipe and spinneret 13
Relatively an angle installation can only be tilted by cone-shaped beam 12, the silk material 14 sent by spinneret can only be inclined by sending into laser beam, institute
Adjustment silk material is needed to make it in facula position and beam intersection (list of references before processing to generally require：Wang Zhiyao edits. China
Material engineering grand ceremony volume 25. Beijing：Chemical Industry Press, 2006；2nd, Zuo Tiechuan edits the advanced manufacture in .21 century and swashs
Light technology and engineering. Beijing, Science Press, 2007,5；3、Waheed UI Haq Syed,Lin Li.Effects of
wire feeding direction and location in multiple layer diode laser direct
metal deposition.Applied Surface Science,24March 2005).Can be seen that one side by above-mentioned
The greatest drawback that wire feed brings is exactly silk material is to be tilted into molten bath, and suffered light beam irradiates, molten bath conduction of heat and the hot of radiation are made
With asymmetric, uneven, especially work as and directional change inevitably occurs in cladding, that is, in processing, laser beam is relative to machined surface
Make different directions scanning motion when, just there are different orientation and attitude in light beam and silk material relative scanning motion direction, silk material
The heat effect in melting and molten bath and power mechanism effect will change, so that solidification Hou Rong road size, pattern, surface
Roughness etc. all can occur large change, or even causes melting process off and on.For common one direction in unilateral wire feed
There is not beam-shaping effect in the single or multiple lift cladding built-up welding of scanning, will not change because it is sent into orientation angles, and to complexity
For surface build-up welding particularly three-dimensional directly rapid shaping etc. technique, because scanning track and direction are being continually changing, its impact is just
Very prominent, the seriality of cladding or molten road quality all it is difficult to ensure that.Additionally, during cladding silk material send into point must surface of the work with
The intersecting therewith coincidence of beam focal location, its intersection point is again because being limited in the region of next very little on weld pool surface, but if adding
In work, this intersection point has positional fluctuation and change (unavoidable, especially in multilamellar accumulation), silk up and down relative to finished surface (or molten bath)
The heat effect of material will change again, and the fusion process of silk material may be made discontinuously to carry out, and silk material leading portion bends, and light and silk are discontinuously right
Standard and dislocation, so make the minor variations of relative position between the seriality of cladding process and molten road quality focusing and machined surface
All very sensitive.Additionally, laser cladding process often needs to convey inert protective gas around molten bath, produced with blow pressure cladding
Hot flame, slag etc., thus protecting, cylinder lumen eyeglass is not contaminated, molten bath is not oxidized simultaneously.In the lateral wire feed of prior art
In device, because structure limits, protective gas also can only laterally blow, and it is uneven to the blow pressure power in molten bath, air turbulence, protects
Shield effect is poor.
In feeding method laser light as disclosed in Chinese Patent No. CN101386111A in light, wire feeding cladding method adopts
Wire feeder in light, has light inlet above the cylinder using wire feeder in light for the wire feeding cladding method in this laser light, lower section has
Light-emitting window, light inlet is coaxial with light-emitting window.Three ribs of body centre uniform Design are connected with cylinder inboard wall, and rib secures
One conscope, the conical mirror of conscope is facing to light inlet and co-axial line.Incoming laser beam is cut, reflects by conscope
It is transformed to annular beam.Also it has been co-axially mounted an annular reflection focus lamp with conscope, its minute surface is towards institute on cylinder inboard wall
State conscope.The annular beam of conscope reflection incides on annular reflection focus lamp, more poly- by the reflection of annular reflection focus lamp
Burnt cyclization cone focused beams, form a tapered hollow no light zone and focus in ring cone focused beams, focus light-emitting window it
Outward.The insertion outside cylinder of single wire-feeding pipe, the space through conscope and annular reflection focus lamp, reach the conscope back of the body
Switch to behind face with ring cone-shaped beam coaxial line so that the spinneret of wire feed tube end is placed in the tapered hollow of described ring cone-shaped beam
In no light zone, and with ring cone-shaped beam coaxial line.Spinneret exit position is near the focus of ring cone-shaped beam.Silk material is from wire-feeding pipe
Middle feeding, by the spinneret output of wire-feeding pipe lower end, irradiates being surrounded by described ring cone-shaped beam bottom close to focal point, so
Afterwards under the collective effect of the molten bath conduction of heat of illumination and substrate surface, heat radiation etc. heated and continuous melting and vertically into
Molten bath, treats that the substrate surface of cladding is adjusted to described near focal point, fuses into the silk material in molten bath and the base material Surface sheet of part fusing
Material is collectively forming molten bath, the melt in molten bath with light beam and base material relative movement and continuous solidification forms molten road.Above rib
Side to light apply be coated with light absorbent, be provided with cooling water channel inside rib.Met by being arranged to bead structures and being effectively reduced
Light area, reduces illumination loss.The side to light that described wire-feeding pipe is in cylinder applies and is coated with light absorbent, and inside is provided with cooling
Water channel.
Although wire feeder has the effect that in this light：
Hollow ring focus on light beam is obtained by light chopper, makes wire-feeding pipe be placed in focus on light beam hollow part and light beam
Coaxial line, in processing, silk material and focus on light beam are coaxially sent into spot center by positive, and silk material is always by annular beam symmetrically
Surround.In the cladding course of processing, no matter how silk material changes relative to the direction of relative movement of machined surface (or molten bath) with light beam, such as
In three-dimensional cladding processing when light beam scanning direction arbitrarily changes, the orientation in light beam and silk material relative scanning motion direction and appearance
State is identical, and the melting of silk material and the heat effect in molten bath and power mechanism do not change in theory, completely eliminate and sweep
Retouch the impact that directivity is brought.On the other hand, when light beam fluctuates up and down relative to molten bath and produces out of focus, silk material can be directed at hot spot all the time
With the center in molten bath, hot spot and silk material will not misplace.So, silk material and molten bath are kept constant by the mode of heat effect, make heat work
With keeping uniform, stable.Active force under the influence of scanning light beam is relative to the change of machined surface three-dimensional position, between silk material and molten bath
Permanent for forward direction, silk material does not cause skewed, is conducive to molten bath driving force equilibrium and melt flows symmetrical.Meanwhile, silk material hypomere and plus
Work surface, all the time by the heat effect of laser irradiation symmetrically and molten bath, is uniformly heated and process of setting is greatly improved
Molten road quality.
But still exist not enough as follows：
Three gussets being had on cylinder due to incident illumination, can bring following defect：
1st, light passes through three gussets, has energy loss, reduces effective cladding energy；
Although applying on the side to light of 2 ribs and being coated with light absorbent, but if technology stability is bad, still have light anti-
It is mapped to condenser lenss, easily make it cross cause thermal damage, so, coating light absorbent technology difficulty is required higher；
3rd, there is scale error due to when conscope and focus lamp assembling, lead to focusing illumination to be mapped to the light on three gussets
The position dimension that bundle area is different or light beam is on gusset is different, therefore it is inconsistent to be easily caused three gussets deformation, is easily caused
In cladding process, the coaxial precision of hot spot and silk material is not high, thus leading to cladding Quality Down；
4th, cooling water channel is provided only on inside rib, so, cooling-down effect is inconspicuous；Spinneret exit position is far from cladding area
Domain is closer, and silk material can communicate the temperature on spinneret, and spinneret, due to the presence of high temperature, is not only easily deformed and leads to hot spot
With the coaxial deterioration in accuracy of silk material, and be easily caused shower nozzle damage.Due to the space very little between Ring-beam and wire feeding mouth,
Cannot arrange that water route cools down, more lead to spinneret to be easily damaged；
5th, light also passes through wire-feeding pipe, not only increased energy loss, and due to part illumination being only had on whole piece wire-feeding pipe
It is mapped to its surface, uneven due to being heated, also result in wire-feeding pipe deformation, lead to wire-feeder resistance to increase, ultimately result in wire feed mistake
Journey medium velocity changes, and affects cladding layer form accuracy.
Content of the invention
It is an object of the invention to provide a kind of laser melting coating pay-off realizing good cooling-down effect.
For reaching above-mentioned purpose, the present invention provides following technical scheme：A kind of laser melting coating pay-off, accepts incident illumination
Described incident beam is simultaneously converted into focus on light beam to form focus on base material by bundle, and described laser melting coating pay-off includes propping up
Support, the spectroscope being arranged on support frame as described above and reflection focus lamp and the nozzle below described reflection focus lamp, institute
State spectroscope and incident beam is divided at least two bundle the reflected beams, then by reflecting focus lamp, at least two bundle the reflected beams are focused on
Become at least two bundle focus on light beams, the described focus on light beam of at least two bundles forms hollow no light zone and focus, described laser melting coating feeding
It is formed with the light path cooling to lower the temperature for cooling medium circulation flowing to support frame as described above, spectroscope, reflection focus lamp in device
System.
Further：The confession cooling medium that described smooth line cooling system includes being opened in support frame as described above pass through first
The second cooling duct that cooling duct, the confession cooling medium being opened in described spectroscope pass through and be opened in described reflection and focus on
The 3rd cooling duct that confession cooling medium in mirror passes through, described first cooling duct is cold respectively at the second cooling duct and the 3rd
But channel connection.
Further：It is formed with described laser melting coating pay-off for cooling medium circulation flowing with to described nozzle fall
The nozzle cooling system of temperature.
Further：Nozzle overcoat is arranged with described nozzle, described nozzle overcoat includes base portion, runs through described base portion
Nozzle installation through-hole and the coldplate muscle protruding out formation in base portion is towards described nozzle installation through-hole, described nozzle overcoat passes through institute
State nozzle installation through-hole to cover on described nozzle, in described base portion, be formed with center-aisle, described coldplate muscle is located at centre
Between passage and described nozzle, and it is posted by described nozzle, described base portion is further opened with cold with described center-aisle UNICOM
But medium entrance and cooling medium outlet, described nozzle cooling system is by described center-aisle, cooling medium inlet, cooling medium
Outlet and coldplate muscle composition, described cooling medium flows through cooling medium inlet, center-aisle and cooling medium outlet successively.
Further：Described nozzle overcoat is located in described hollow no light zone.
Further：Described laser melting coating pay-off also includes jackshaft, and support frame as described above includes lower bracing frame, described
Jackshaft is arranged in described lower bracing frame, and described jackshaft is located at described spectroscope and the lower section of reflection focus lamp, described spray
Mouth is arranged on described jackshaft, and is located in described hollow no light zone, is provided with the first feeding channel in described lower bracing frame,
The feeding entrance being run through described lower bracing frame side by described first feeding channel, described centre are provided with described lower bracing frame
It is provided with feeding guide groove in axle, in described nozzle, be provided through the second feeding channel of described nozzle, described feeding guide groove
One end is connected with the first feeding channel, and the other end is connected with the second feeding channel.
Further：The first protective gas passage is set, setting the second shielding gas in described jackshaft in described lower bracing frame
Body passage, is provided with the 3rd protective gas passage, one end of described second protective gas passage and the first protection in described nozzle
Gas passage docks, and the other end is docked with the 3rd protective gas passage.
Further：Nozzle overcoat is provided with described nozzle, is formed through outside described nozzle in described nozzle overcoat
4th protective gas passage of set, the two ends of described 3rd protective gas passage are respectively at the second protective gas passage, the 4th guarantor
Shield gas passage docking, described 4th protective gas passage, the second feeding channel and hollow no light zone, focus are coaxial.
Further：Described laser melting coating pay-off also includes jackshaft, and support frame as described above includes lower bracing frame, described
Jackshaft is arranged in described lower bracing frame, and described jackshaft is located at described spectroscope and the lower section of reflection focus lamp, described spray
Mouth is arranged on described jackshaft, and is located in described hollow no light zone, sets the first protective gas passage in described lower bracing frame,
Setting the second protective gas passage in described jackshaft, is provided with the 3rd protective gas passage, described second guarantor in described nozzle
One end of shield gas passage is docked with the first protective gas passage, and the other end is docked with the 3rd protective gas passage.
Further：Described spectroscope is coaxial with reflection focus lamp, and described spectroscope includes two light splitting minute surfaces, described point
Light minute surface is plane or arc shaped surface；Described reflection focus lamp has the focusing minute surface towards light splitting minute surface, and described focusing minute surface is
One camber minute surface, or, described focusing minute surface is made up of multiple camber minute surfaces.
The beneficial effects of the present invention is：By being formed with this laser melting coating pay-off for cooling medium circulation stream
The dynamic light line cooling system to lower the temperature to support frame as described above, spectroscope, reflection focus lamp, thus bracing frame, light splitting can be given simultaneously
Mirror, reflection focus lamp cooling, realize good cooling-down effect, and then can improve bracing frame, spectroscope, the use longevity of reflection focus lamp
Life.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description
Fig. 1 is the schematic diagram of the outer feeding method of existing laser melting and coating technique light；
Fig. 2 is the sectional view of the laser melting coating pay-off shown in a preferred embodiment of the present invention, illustrates containing light path；
Fig. 3 is spectroscopical structural representation in Fig. 2；
Fig. 4 is structural representation on other direction for the spectroscope shown in Fig. 3；
Fig. 5 is the structural representation of lower bracing frame in Fig. 2；
Fig. 6 is structural representation on other direction for the lower bracing frame shown in Fig. 5；
Fig. 7 is part-structure schematic diagram in Fig. 2；
Fig. 8 is sectional view on other direction for the laser melting coating pay-off shown in Fig. 2, without light path；
Fig. 9 is the enlarged drawing of the part-structure in Fig. 8；
Figure 10 is the assembling figure of part-structure in Fig. 2；
Figure 11 is the enlarged drawing of the part-structure in Fig. 2；
Figure 12 is the structural representation of nozzle overcoat in Fig. 2；
Figure 13 is that the nozzle shown in Figure 12 is coated at the structural representation on other direction；
Figure 14 is the structural representation of the light cladding pay-off shown in another embodiment of the present invention；
Figure 15 is structural representation on another visual angle for the light cladding pay-off shown in Figure 14.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Hereinafter implement
Example is used for the present invention is described, but is not limited to the scope of the present invention.
Refer to Fig. 2 and Fig. 7, the laser melting coating pay-off shown in embodiment one is in order to accept incident beam 20 and by institute
State incident beam 20 and be converted into focus on light beam 30 so that focus 40 to be formed on base material 80.Described laser melting coating pay-off includes propping up
Support 21, the spectroscope 22 being arranged on support frame as described above 21 and reflection focus lamp 23, be located at described reflection focus lamp 23 below
Nozzle 24 and be arranged on jackshaft 25 on support frame as described above 21, incident beam 20 is divided into two bundles reflections by described spectroscope 22
Light beam 50, then by reflecting focus lamp 23, two bundle the reflected beams 50 are focused into two bundle focus on light beams 30, the two described focusing light of bundle
Bundle 30 forms hollow no light zone 60 and focus 40.In Fig. 2, black shaded area indication is light path part, and this light path part includes
Incident beam 20, the reflected beams 50, focus on light beam 30 and the focus 40 being formed on base material 80.Incorporated by reference to Fig. 2, Fig. 5 and figure
6, support frame as described above 21 includes lower bracing frame 211 and the upper support frame 212 being fixed in described lower bracing frame 211, described lower
Support 211 includes the upper support frame installation portion 2111 of ringwise structure, protrudes out upwards on described upper support frame installation portion 2111
The reflection focus lamp installation portion 2112 being formed, the fixture 2113 being located in the hollow of described upper support frame installation portion 2111 and company
Connect the bearing rib 2114 of fixture 2113 and upper support frame installation portion 2111, described reflection focus lamp installation portion 2112 is in ring
Shape, the outside diameter of described upper support frame installation portion 2111 is more than the outside diameter of reflection focus lamp installation portion 2112.On described
Bracing frame 212 is arranged on described upper support frame installation portion 2111, and described reflection focus lamp 23 is arranged on described reflection focus lamp
On installation portion 2112, described fixture 2113 includes the spectroscope installed surface 2115 being disposed opposite to each other and jackshaft installed surface 2116,
Described spectroscope 22 is fixed on spectroscope installed surface 2115.Described jackshaft 25 is fixed on described jackshaft installed surface 2116
On, this jackshaft 25 is located at below spectroscope 22, and described nozzle 24 is arranged on this jackshaft 25.Described fixture 2113 with upper
Bracing frame installation portion 2111 does not connect, and is formed with the annular hollow 2117 passing through for focus on light beam 30 between the two.Described support
The projection of gusset 2114 is located in described annular hollow 2117, and described bearing rib 2117 and focus on light beam 30 stagger.In this reality
Apply in example, this bearing rib 2114 is located in annular hollow 2117, and annular hollow 2117 is divided into by this bearing rib 2114
Two arcuate segments passing through for two bundle focus on light beams 30.In the present embodiment, this described nozzle 24 is located in hollow no light zone 60,
In the present embodiment, because nozzle 24 is arranged on jackshaft 25, and it is located in hollow no light zone 60, so the present embodiment is sharp
Light cladding pay-off adopts feeding in light.Described upper support frame 212 and lower bracing frame 211 are enclosed and are set formation one cavity and (do not mark
Number), described reflection focus lamp 23, spectroscope 22 are located in described cavity, and the top of described upper support frame 212 is provided with incident illumination
Bundle opening 2121.Refer to Fig. 2 and Fig. 7, support frame as described above 21 and incident beam 20, the reflected beams 50, the equal mistake of focus on light beam 30
Open up and put, specifically：Described incident beam 20, the reflected beams 50, focus on light beam 30 are all staggered with bearing rib 2114 setting, should
Focus on light beam 30 passes through in annular hollow 2117.By by bracing frame 21 and incident beam 20, the reflected beams 50, focus on light beam
30 all stagger setting, so that this bracing frame 21 is not all interfered with incident beam 20, the reflected beams 50, focus on light beam 30, reduce
The energy loss of light path, improves capacity usage ratio, in addition, by this kind of design, it is to avoid in light path process in prior art
Region coating light absorbent, thus contributing to reducing technology difficulty, contributes to reduces cost.Incorporated by reference to Fig. 3, described spectroscope 22
Including two light splitting minute surfaces 221, described light splitting minute surface 221 is plane or arc shaped surface.Incorporated by reference to Fig. 4, described reflection focus lamp 23
For hollow circular cylinder structure, described reflection focus lamp 23 has the focusing minute surface 231 towards light splitting minute surface 221, described focus lamp
Face 231 is a camber minute surface, or, described focusing minute surface 231 is made up of multiple camber minute surfaces.Refer to Fig. 2, described spectroscope
22 is coaxial with reflection focus lamp 23.
It is formed with described laser melting coating pay-off and flow with to support frame as described above 21, spectroscope for cooling medium circulation
22nd, the light line cooling system of reflection focus lamp 23 cooling and the nozzle flowing to lower the temperature to described nozzle 24 for cooling medium circulation
24 cooling systems.Really, in other embodiments, this light line cooling system and nozzle 24 cooling system can select a presence.
Refer to Fig. 8, described smooth line cooling system include being opened in support frame as described above 21 and for cooling medium pass through first cold
But passage 213, be opened in described spectroscope 22 and the second cooling duct 222 of passing through for cooling medium and be opened in described
The 3rd cooling duct 232 that is in reflection focus lamp 23 and passing through for cooling medium.Described first cooling duct 213 is respectively at
Two cooling ducts 222 connect with the 3rd cooling duct 232.Refer to Fig. 2 and Fig. 9, and combine Figure 12 and Figure 13, described nozzle 24
On be arranged with nozzle overcoat 70, described nozzle overcoat 70 include base portion 71, the nozzle installation through-hole 72 running through described base portion 71 and
Protrude out the coldplate muscle 73 of formation in base portion 71 is towards described nozzle installation through-hole 72, described nozzle overcoat 70 passes through described nozzle
To on described nozzle 24, being formed with center-aisle 74 in described base portion 71, described coldplate muscle 73 is located at 72 sets of installation through-hole
Between center-aisle 74 and described nozzle 24, and it is posted by described nozzle 24.It is further opened with and described centre on described base portion 71
The cooling medium inlet 75 of passage 74 UNICOM and cooling medium outlet 76.Described base portion has the outer of opposite coldplate muscle 73 setting
Side 711, this cooling medium inlet 75 and cooling medium outlet 76 run through the lateral surface 711 of base portion 71.Described cooling medium according to
Secondary cooling medium inlet 75, center-aisle 74 and the cooling medium of flowing through exports 76, and described nozzle cooling system is led to by above-mentioned centre
Road 74, cooling medium inlet 75, cooling medium outlet 76 and coldplate muscle 73 form.Because nozzle overcoat 70 passes through coldplate muscle
73 with nozzle 24 directly contact, such that it is able to reduce the temperature of nozzle 24, to provide the service life of nozzle 24.Incorporated by reference to Fig. 2,
In the present embodiment, described nozzle overcoat 70 is located in described hollow no light zone 60, by by nozzle overcoat 70 as hollow no
In light area 60, can interfere thus preventing nozzle overcoat 70 from being formed with focus on light beam 30, it is to avoid light path is irradiated to thus affecting cold
But effect, and also contribute to, to reduce the energy loss of light path, improve capacity usage ratio.
Refer to Fig. 9 and combine Fig. 5, in described lower bracing frame 211, be provided with the first feeding channel 214, this first feeding
Passage 214 is specially opened in bearing rib 2114.It is provided with by described first feeding channel in described lower bracing frame 211
The 214 feeding entrances 215 running through described lower bracing frame 211 side, described feeding entrance 215 is located at reflection focus lamp installation portion
On 2112 circle end face 2118.It is provided with feeding guide groove 251 in described jackshaft 25, in described nozzle 24, be provided through institute
State the second feeding channel 241 of nozzle 24, one end of described feeding guide groove 251 is connected with the first feeding channel 214, the other end with
Second feeding channel 241 connects.Feeding is formed by this first feeding channel 214, feeding guide groove 251, the second feeding channel 241
Channel system.First feeding channel 214 is entered by feeding entrance 215 by melt material, and passes through feeding guide groove 251 and second
Feeding channel 241 enters the cladding region that focus 40 is located, directly right by this feeding guide groove 251 and the second feeding channel 241
Connect, thus convenient smooth by the flowing of melt material, leave after nozzle 24 in theory can be completely coaxial by melt material and light path,
Leave and be introduced into hollow no light zone 60 by melt material after nozzle 24, at focus 40 by under described two bundle focus on light beams 30
Portion surrounds to be irradiated, and is then heated under the collective effect of the molten bath conduction of heat on illumination and base material 80 surface, heat radiation etc. and connects
Continuous fusing and vertically into molten bath, treat that base material 80 surface of cladding is adjusted near described focus 40, fuse into the material in molten bath with
Base material 80 skin-material of part fusing is collectively forming molten bath, and the melt in molten bath is with the relative movement of two light beams and base material 80
And continuous solidification forms molten road.
Refer to Fig. 8, in described lower bracing frame 211, set the first protective gas passage 216, setting the in described jackshaft 25
Two protective gas passages 252, are provided with the 3rd protective gas passage 242, described second protective gas passage in described nozzle 24
252 one end is docked with the first protective gas passage 216, and the other end is docked with the 3rd protective gas passage 242.Due to this enforcement
It is provided with nozzle overcoat 70 in example, so, in the present embodiment, in described nozzle overcoat 70, it is formed through described nozzle overcoat
70 the 4th protective gas passage 77, the 4th protective gas passage 77 part is that the inner fovea part 771 being formed on base portion 71 (is asked for an interview
Figure 12), it is formed with coldplate muscle 73 by base portion 71, and described base portion 71 is provided with annular slab 78, and the 4th protective gas leads to
The another part in road 77 is located on described annular slab 78, and this another part the 4th protective gas passage 77 is straight along annular slab 78
Footpath direction extends the groove 772 being formed, and the inner face 781 of this groove 772 insertion annular slab 78 and bottom face 782 (ask for an interview figure
13).The two ends of described 3rd protective gas passage 242 are respectively at the second protective gas passage 252, the 4th protective gas passage 77
Docking, described 4th protective gas passage 77, the second feeding channel 241 and hollow no light zone 60, focus 40 are coaxial.
Refer to Figure 14 and Figure 15, the laser melting coating pay-off shown in the present embodiment two and the laser shown in embodiment one
The structure of cladding pay-off is roughly the same, and distinctive points are：First, in the present embodiment, described focus on light beam 30 ' is three beams；2nd,
Nozzle overcoat is not provided with nozzle 24 ' in the present embodiment.Focus on light beam 30 ' is realized especially by following structure for three beams：Adopted
Spectroscope 22 ' includes three light splitting minute surfaces, and described light splitting minute surface is similarly plane or arc shaped surface, and the reflection being adopted focuses on
, with embodiment one, described spectroscope 22 ' is coaxial with reflection focus lamp, because spectroscope 22 ' has three points for mirror (not shown)
Light minute surface, so incident beam 20 ' is divided into three beams the reflected beams 50 ' by this spectroscope 22 ', reflection focus lamp 23 ' is anti-by three beams
Irradiating light beam 50 ' is focused into three beams focus on light beam 30 ', and focus on light beam 30 ' described in three beams forms hollow no light zone (non-label) and Jiao
Point (non-label).Described fixture 2113 ' is not equally connected with upper support frame installation portion 2111 ', and is formed with confession between the two
The annular hollow 2117 ' that focus on light beam 30 ' passes through, annular hollow 2117 ' is divided into and gathers for three beams by described bearing rib 2114 '
Three arcuate segments that defocused laser beam 30 ' passes through.By being to be changed into three beams by focus on light beam 30 ', focus on light with two bundles in embodiment one
Bundle is compared and is more uniformly stressed it is not easy to deform so that reflecting focus lamp 23 ', and is easier to ensure that cladding precision and reliability.
Really, in other embodiments, the nozzle in the laser melting coating pay-off with three light beam focus on light beams
On with embodiment one, equally nozzle overcoat is set, or, this focus on light beam can be arranged to other quantity.
In sum：Above-mentioned laser melting coating pay-off has the advantage that：
1st, pass through be formed with this laser melting coating pay-off for cooling medium circulation flowing to support frame as described above 21,
Spectroscope 22 (22 '), the light line cooling system of reflection focus lamp 23 cooling, thus bracing frame 21, spectroscope 22 can be given simultaneously
(22 '), reflection focus lamp 23 are lowered the temperature, and realize good cooling-down effect, and then can improve bracing frame 21, spectroscope 22 (22 '), reflection
The service life of focus lamp 23.
2nd, pass through in setting nozzle overcoat 70, and arrange in nozzle overcoat 70 to the nozzle cooling system of nozzle 24 cooling
System, to reduce the temperature of nozzle 24, improves the life-span of nozzle 24；Nozzle overcoat 70 is arranged on hollow no light zone 60 simultaneously, makes
Nozzle cooling system is staggered completely with light path, it is to avoid illumination is mapped to thus affecting cooling effect.
3rd, pass through bracing frame 21 and incident beam 20 (20 '), the reflected beams 50 (50 '), focus on light beam all stagger setting,
So that this bracing frame 21 is not all interfered with incident beam 20 (20 '), the reflected beams 50 (50 '), focus on light beam, reduce light beam
Energy loss, improves capacity usage ratio, in addition, by this kind of design, it is to avoid the region painting passed through in light beam in prior art
Plating light absorbent, thus contributing to reducing technology difficulty, contributes to reduces cost.
4th, because light path is without feeding channel system, light path will not be subject to by melt material and by melt material relevant range
Illumination effect, thus feeding channel system unobstructed has been effectively ensured, reduce feeding speed change, improve cladding layer shape
Precision.
Each technical characteristic of embodiment described above can arbitrarily be combined, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic applied in example is all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope of this specification record.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of laser melting coating pay-off, accepts incident beam and described incident beam is converted into focus on light beam with base material
Upper formation focus, it is poly- that described laser melting coating pay-off includes bracing frame, the spectroscope being arranged on support frame as described above and reflection
Burnt mirror and the nozzle below described reflection focus lamp, incident beam is divided at least two bundle the reflected beams by described spectroscope,
By reflecting focus lamp, at least two bundle the reflected beams are focused at least two bundle focus on light beams, at least two described focus on light beams of bundle again
Form hollow no light zone and focus it is characterised in that being formed with described laser melting coating pay-off for cooling medium circulation stream
The dynamic light line cooling system to lower the temperature to support frame as described above, spectroscope, reflection focus lamp.
2. laser melting coating pay-off as claimed in claim 1 is it is characterised in that described smooth line cooling system includes being opened in
The first cooling duct that confession cooling medium in support frame as described above passes through, the confession cooling medium being opened in described spectroscope pass through
The second cooling duct and be opened in the 3rd cooling duct passed through of confession cooling medium in described reflection focus lamp, described first
Cooling duct connects with the 3rd cooling duct respectively at the second cooling duct.
3. laser melting coating pay-off as claimed in claim 1 or 2 is it is characterised in that in described laser melting coating pay-off
It is formed with the nozzle cooling system to lower the temperature for cooling medium circulation flowing to described nozzle.
4. laser melting coating pay-off as claimed in claim 3 is it is characterised in that be arranged with nozzle overcoat on described nozzle,
Described nozzle overcoat include base portion, the nozzle installation through-hole running through described base portion and in base portion towards described nozzle installation through-hole convex
Stretch the coldplate muscle of formation, described nozzle overcoat is covered on described nozzle by described nozzle installation through-hole, in described base portion
It is formed with center-aisle, described coldplate muscle is located between center-aisle and described nozzle, and is posted by described nozzle, described base
Cooling medium inlet with described center-aisle UNICOM and cooling medium outlet are further opened with portion, described nozzle cooling system by
Described center-aisle, cooling medium inlet, cooling medium outlet and coldplate muscle composition, described cooling medium flows through cooling successively
Medium entrance, center-aisle and cooling medium outlet.
5. laser melting coating pay-off as claimed in claim 4 is it is characterised in that described nozzle overcoat is located at described hollow no
In light area.
6. laser melting coating pay-off as claimed in claim 4 is it is characterised in that described laser melting coating pay-off also includes
Jackshaft, support frame as described above includes lower bracing frame, and described jackshaft is arranged in described lower bracing frame, and described jackshaft is located at institute
State spectroscope and the lower section of reflection focus lamp, described nozzle is arranged on described jackshaft, and is located in described hollow no light zone,
It is provided with the first feeding channel in described lower bracing frame, described lower bracing frame is provided with institute is run through by described first feeding channel
State the feeding entrance of lower bracing frame side, in described jackshaft, be provided with feeding guide groove, be provided through described in described nozzle
Second feeding channel of nozzle, one end of described feeding guide groove is connected with the first feeding channel, the other end and the second feeding channel
Connection.
7. laser melting coating pay-off as claimed in claim 6 is it is characterised in that set the first shielding gas in described lower bracing frame
Body passage, in described jackshaft, setting the second protective gas passage, is provided with the 3rd protective gas passage in described nozzle, described
One end of second protective gas passage is docked with the first protective gas passage, and the other end is docked with the 3rd protective gas passage.
8. laser melting coating pay-off as claimed in claim 7 is it is characterised in that be provided with nozzle overcoat on described nozzle,
It is formed through the 4th protective gas passage of described nozzle overcoat in described nozzle overcoat, described 3rd protective gas passage
Two ends are respectively at the second protective gas passage, the 4th protective gas passage docking, described 4th protective gas passage, the second feeding
Passage and hollow no light zone, focus are coaxial.
9. laser melting coating pay-off as claimed in claim 1 is it is characterised in that described laser melting coating pay-off also includes
Jackshaft, support frame as described above includes lower bracing frame, and described jackshaft is arranged in described lower bracing frame, and described jackshaft is located at institute
State spectroscope and the lower section of reflection focus lamp, described nozzle is arranged on described jackshaft, and is located in described hollow no light zone,
The first protective gas passage is set, setting the second protective gas passage in described jackshaft, in described nozzle in described lower bracing frame
It is provided with the 3rd protective gas passage, one end of described second protective gas passage is docked with the first protective gas passage, another
End is docked with the 3rd protective gas passage.
10. laser melting coating pay-off as claimed in claim 1 is it is characterised in that described spectroscope is same with reflection focus lamp
Axle, described spectroscope includes two light splitting minute surfaces, and described light splitting minute surface is plane or arc shaped surface；Described reflection focus lamp has court
To the focusing minute surface of light splitting minute surface, described focusing minute surface is a camber minute surface, or, described focusing minute surface is by multiple camber minute surfaces
Constitute.
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