CN108296639A - A kind of laser impact intensified processing unit of trailing type - Google Patents
A kind of laser impact intensified processing unit of trailing type Download PDFInfo
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- CN108296639A CN108296639A CN201611260752.7A CN201611260752A CN108296639A CN 108296639 A CN108296639 A CN 108296639A CN 201611260752 A CN201611260752 A CN 201611260752A CN 108296639 A CN108296639 A CN 108296639A
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/356—Working by laser beam, e.g. welding, cutting or boring for surface treatment by shock processing
-
- 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
-
- 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
- B23K26/03—Observing, e.g. monitoring, the 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—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
-
- 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
- B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
Abstract
This application discloses a kind of laser impact intensified devices of trailing type, which is characterized in that described device includes light path input module, send band module, focusing module, water spray module；One end of the light path input module connects and introduces light source, and the other end is connect with the focusing module and light path communicates；The other end of the focusing module is connect with the water spray module；Described send with module includes motor, transmission mechanism and absorption band, and the motor drives the absorption band to move by transmission mechanism, and the absorption band passes through the water column that the water spray module sprays.Which employs the absorption band mode of movement of trailing type, and the advantage of laser impact intensified processing is carried out with high order, high efficiency.
Description
Technical field
The invention belongs to material processing fields, are related to reiforcing laser impact technology, specifically a kind of for various multiple
The laser impact intensified processing system of trailing type that miscellaneous shape workpiece surface carries out.
Background technology
Reiforcing laser impact technology (Laser Shocking Peening, LSP) is to utilize high-energy density (GW/cm2Amount
Grade), short pulse (10~30ns magnitudes) pulse laser impact material generates strong laser induced plasma in material surface
Body.The GPa grade shock waves that its explosion generates are propagated in material surface and internally, make to generate in material surface certain area
Plastic deformation and complicated dislocation structure, form very big residual compressive stress, improve the fatigue strength and resistance to corrosion of part.Mesh
This preceding technology is widely used in all trades and professions such as mechanical manufacturing engineering, aerospace, microelectronics, national defence, medical treatment.Laser
Shock peening technology is that a kind of high pressure shock wave generating light laser carries out laser impact intensified processing for workpiece surface
Technology.Currently, reiforcing laser impact technology is widely applied in fields such as aviation, ship, mechanical engineerings, especially
It is the antifatigue processing for aircraft engine blade.
The existing laser impact intensified device for workpiece surface includes laser generating unit, is located at the suction of workpiece surface
Protective layer is received, and positioned at the restraint layer for absorbing protective layer.The function of restraint layer is that laser energy is allowed to pass through and act on
Reaction force when absorbing protective layer, while also providing Cathode plasma explosion as much as possible improves shock wave coupling efficiency.
Generally use the solid materials such as optical glass as restraint layer at present, or using flexible materials such as moisture films as transparent constraint
Layer.The main function for absorbing protective layer is to protect workpiece not burnt by laser and enhance the absorption to laser energy.It is universal at present
Using paint, flexible tape or certain thickness metal foil etc. as absorption protective layer.
It during laser impact intensified, in order to inhibit the free diffusing of plasma, is more concentrated, when longer effect
Between shock wave, it will usually laser processing area add one layer of restraint layer.Common constrained layer material has quartz, glass, soft
Property film and water etc., wherein water because it is at low cost, flexible, residue will not be generated because of fragmentation, is suitable to the piece surface of complicated shape
The advantages that Ying Xingqiang, has obtained widest use, but primary disadvantage is that the insufficient rigidity of water layer there are one it, it is difficult to provide
Stable restraint layer.Conventional laser impact intensified processing is utilized in workpiece surface and sticks metal foil or black belt or painting
The extraordinary forms such as pitch-dark are covered, it is good to various Irregular Boundary Surface stickiness to coat pitch-dark advantage, the disadvantage is that needing after spray coating
Its drying is waited for, then can just apply restraint layer and carry out shock peening, production efficiency is low；According to aluminium foil paste layer, then
It is bad to chamfering, the stickiness of Irregular Boundary Surface, it influences to strengthen quality.After workpiece processing, it is also necessary to removal workpiece table of trying every possible means
Face paillon or adhesive tape or coated by special are pitch-dark, time-consuming and laborious, it is difficult to realize extensive, high efficiency production application, hinder industry
Change process.
Development direction is to develop water soluble paint at present, and (pre-treatment) can be immediately without drying after spray-on coating
Shock peening is carried out, removing coating (post-processing) can be removed using high pressure water after having handled, equally exist processing efficiency deficiency and ask
Topic.
Invention content
According to the one side of the application, a kind of laser impact intensified device of the trailing type of light-water coaxial and side are provided
Method, which employs the absorption band mode of movement of trailing type, and the water of certain pressure is sprayed by module of spraying water, absorption band is close to work
Part, with the rotation of motor, laser-impact conveys absorption band while processing, you can completes the laser-impact for workpiece surface
Intensive treatment process.Since the absorption band that uses of the present invention is not attached at workpiece surface, and any surface finish and without other dirts, because
This need not carry out post-processing and laser impact intensified processing can be completed, and there is high order, high efficiency to carry out laser impact intensified
The advantage of processing.
Described device includes light path input module, send band module, focusing module, water spray module；
One end of the light path input module connects and introduces light source, and the other end is connect with the focusing module and light path phase
It is logical；The other end of the focusing module is connect with the water spray module；Described send with module includes motor, transmission mechanism and absorption
Band, the motor drive the absorption band to move by transmission mechanism, and the absorption band passes through the water that the water spray module sprays
Column.
Preferably, the motor is synchronous motor, the step frequency of the synchronous motor and the trailing type laser-impact
The shock peening working frequency of intensifying device is consistent.Described device often carries out a laser pulse, and the synchronous motor drives
The absorption band moves a distance.The distance of each laser pulse movement of absorption band, those skilled in the art can basis
The hot spot ablation range of laser irradiation determines during the process requirements and laser-impact of workpiece to be processed.
Preferably, described send with module includes absorption band fixed structure, and the absorption band fixed structure is fixedly connected on institute
The water spray exit of water spray module is stated, the moving direction of the absorption band is fixed on the water spray by the absorption band fixed structure
The water column center that module sprays.It is further preferred that the absorption band fixed structure is that sprinkler head goes out in the water spray module
The part at the mouth of a river.As a specific embodiment, the absorption band fixed structure is spray of spraying water in the water spray module
The absorption band restraining structure of head water outlet part.Further specifically, the absorption band fixed structure is in the water spray module
Two gaps that sprinkler head water outlet partial sidewall is oppositely arranged form absorption band restraining structure.The absorption band is from wherein one
A gap is pierced by after penetrating and passing through the water column that the water spray module sprays from another gap；The absorption band fixed structure will
The moving direction of the absorption band is fixed on the water column center that the water spray module sprays.
Preferably, the absorption band can be selected color it is relatively deep, without sticky glue-line, the smooth pliable film strips being not easily broken.
The absorption band can be selected color it is relatively deep, without sticky glue-line, the smooth pliable film strips being not easily broken.
Preferably, the thickness of the absorption band is the flexible membrane belt of 0.01mm to 0.5mm.
It is preferably carried out mode as one, the absorption tape thickness is 0.1mm.
As a kind of embodiment of the application, the absorption band be to 10640nm, 1064nm, 800nm, 532nm,
The absorptivity of the laser of at least one wavelength is not less than 95% in 517nm, 355nm.
As a kind of embodiment of the application, the absorption band is the absorption to the laser of wavelength 355nm to 10640nm
Rate is not less than 95%.
As a kind of embodiment of the application, the absorption band be to 10640nm, 1064nm, 800nm, 532nm,
The absorptivity of the laser of at least one wavelength is 95% to 99.99% in 517nm, 355nm.
Preferably, the absorption band tensile strength is more than 30N/cm.
It is further preferred that the absorption band tensile strength scope 30N/cm to 3000N/cm.
It is further preferred that the thickness of the absorption band tensile strength scope 30N/cm to 300N/cm be 0.01mm extremely
The flexible membrane belt of 0.5mm.
Preferably, the thickness of the absorption band is 0.01mm to 0.2mm.
Preferably, the absorption belt surface is free of sticky glue-line.
It is further preferred that the wavelength of the pulse laser be 10640nm, 1064nm, 800nm, 532nm, 517nm and/
Or 355nm
Preferably, the transmission mechanism includes at least one delivery wheel and at least one expansion tightening wheel.
Preferably, the transmission mechanism includes the first delivery wheel, the first expansion tightening wheel, the second conveying of described device side
Wheel and third delivery wheel, the second expansion tightening wheel, the 4th delivery wheel of the described device other side；The absorption band is in the motor
Drive under sequentially pass through the first delivery wheel, the first expansion tightening wheel, the second delivery wheel, the spray outlet end of the water spray module, the
Three delivery wheels, the second expansion tightening wheel, the 4th delivery wheel.
It is further preferred that the delivery wheel or expansion tightening wheel can be fixed wheel or driving wheel or other smooth components etc..
Preferably, the focusing module can be by knob mode, will through bevel gear set mechanism, cam mechanism or other forms
Convert rotational motion is to move along a straight line up and down, can ensure that focus lamp Precision trimming acts on.
Preferably, under the premise of not influencing processing quality, the impact head can be arranged thin and grow, and can reach conventional sharp
The concealment part that light impact processing can not reach carries out surface Hardening Treatment.
Preferably, the light path input module includes connecting plate, positioning pin, light path adjustment block, elastic adjusting sleeve and reflection
Mirror；Laser or optical fiber are connected to by the positioning pin in the elastic adjusting sleeve by the connecting plate, the elasticity adjustment
Set is resiliently attached to the light path adjustment block, and the light path adjustment block is connect with described device, and the speculum is fixed on described
On device and reflect the light that the laser or the optical fiber are sent out；Light path input module adjustment output light path with it is described
The water column that module of spraying water sprays is coaxial.
The focusing module includes knob, self lubrication bearing, shell, branch sleeve, focus lamp and focuses mirror holder；It is described poly-
The focus lamp is fixed on the self lubrication bearing by burnt mirror holder；The self lubrication bearing is outside the drive lower edge of the knob
Shell slides axially to focus to light.
Preferably, described device includes image-forming module, and the image-forming module includes ccd image sensor and installation sleeve,
The ccd image sensor can be connected to the anti-of the light path input module by the installation sleeve along what light moved axially
Penetrate mirror upper end；Side light transmission of the mirror surface to the ccd image sensor, the mirror surface to the laser or
The side of the optical fiber is reflective.In the application, the CCD refers to charge coupled cell (full name in English：Charge-coupled
Device)。
Preferably, the water spray module includes nozzle, and the water outlet side wall of the nozzle has two seams being oppositely arranged
For gap to form absorption band fixed structure, the absorption band penetrates from one of gap and passes through the water that the water spray module sprays
It is pierced by from another gap after column；The moving direction of the absorption band is fixed on the water spray mould by the absorption band fixed structure
The water column center that block sprays.
In the application, the moving direction of the absorption band is fixed on the water spray module and sprayed by the absorption band fixed structure
The water column center gone out, refers to the center that the hot spot of laser and the central axes of coaxial water column can point at the absorption band.
Preferably, the water spray module includes protection eyeglass, water spray sleeve, intakes and take over, install nut set, nozzle；
Described water spray sleeve one end is fixed with the protection eyeglass and is connect with the beam projecting direction of the focusing module,
The water spray sleeve other end is covered by the installation nut to be threadedly coupled with the nozzle；The protection eyeglass is by the water spray mould
The space of block and the focusing module separates；
The side wall of the water spray sleeve is equipped with the water inlet and takes over.
Preferably, described device includes anticollision module, and the anticollision module is set to focusing module and the water spray module
Between, the anticollision module includes protection lantern ring, installation nut set and nut pressure ring；The protection lantern ring elastically deformable leads to
It crosses the installation nut set and nut pressure ring is installed between the focusing module and the water spray module and buffers the water spray
The shock and vibration that module is subject to.
Preferably, described device includes controller, and the controller is electrically connected with the light source, the synchronous motor, institute
The shock peening for stating step frequency and the laser impact intensified device of the trailing type that controller controls the synchronous motor works
Frequency is consistent.
Preferably, described device includes pressurized tank, water pump and gas generator, the controller and the water pump and gas
Generator is electrically connected, and the pressurized tank is connect with the water spray module water route, and the controller passes through water pump and gas generator
To control the hydraulic pressure in the pressurized tank.
The advantageous effect that the application can generate includes：The laser impact intensified device of trailing type provided herein uses
The metal foil or black tape of trailing type as absorbed layer, can accomplish while shock treatment, while tape transport, due to absorbing at not pasting
Workpiece surface is invested, workpiece surface need not be post-processed without other materials, and there is high order, high efficiency to carry out laser punching
Hit the advantage of intensive treatment.
Description of the drawings
Fig. 1 is a kind of sectional view of the laser impact intensified device front view of embodiment trailing type of the application.
Fig. 2 is a kind of sectional view of the laser impact intensified device left view of embodiment trailing type of the application.
Fig. 3 is a kind of laser impact intensified device front view of embodiment trailing type of the application.
Fig. 4 is a kind of laser impact intensified device left view of embodiment trailing type of the application.
Fig. 5 is a kind of laser impact intensified device right view of embodiment trailing type of the application.
Fig. 6 is a kind of laser impact intensified device vertical view of embodiment trailing type of the application.
Fig. 7 is a kind of laser impact intensified device upward view of embodiment trailing type of the application.
Fig. 8 is a kind of laser impact intensified device stereogram of embodiment trailing type of the application.
Fig. 9 is a kind of laser impact intensified device stereogram of embodiment trailing type of the application.
Figure 10 is a kind of embodiment nozzle partial enlarged view of the application.
Figure 11 is a kind of embodiment nozzle partial enlargement tri-dimensional picture of the application.
Figure 12 is a kind of embodiment nozzle partial enlarged view of the application.
Figure 13 is a kind of laser impact intensified apparatus system connection figure of embodiment trailing type of the application.
Component and reference numerals list：
Specific implementation mode
The application is described in detail with reference to embodiment, but the application is not limited to these embodiments.
As depicted in figs. 1 and 2, in the specific implementation mode of the application, the laser impact intensified device of trailing type includes
Light path input module 2 send band module 4, focusing module 6, anticollision module 7, image-forming module 8 and water spray module 9.Light path input module
2 one end (the light path arrival end of Fig. 1) connects and introduces light source, the other end (lower end of the reflective mirror 28 of Fig. 1) and focusing module 6
It connects and light path communicates.The other end of focusing module 6 is connect (as shown in Figure 2) by anticollision module 7 with water spray module 9.Imaging
Module 8 is located at device top, and light path can pass through the hot spot situation that reflective mirror 28 observes bottom of device.
Specifically, referring to Fig. 1, light path input module 2 includes connecting plate 20, positioning pin 22, light path adjustment block 24, bullet
Property adjusting sleeve 26 and speculum 28.Being located by connecting in elastic adjusting sleeve by positioning pin 22 by laser or optical fiber of connecting plate 20
26, elastic adjusting sleeve 26 is resiliently attached to light path adjustment block 24, the company of can adjust between light path adjustment block 24 and shown device connection
It connects, Fig. 8 can be please referred to adjust light path by two dimensional motion in the vertical plane of optical axis.Speculum 28 is fixed on light path input
In module 2 and reflect the light that the laser or the optical fiber are sent out.Light path input module 2 can adjust the light path of its output
It is coaxial with the water column sprayed with the water spray module 9.
Referring to Fig. 2, focusing module 6 includes knob 60, self lubrication bearing 62, shell 63, slip ring 64, focus lamp 66, connects
Female connector cylinder 67 focuses mirror holder 68 and positioning pin 69.It focuses mirror holder 68 focus lamp 68 is fixed on self lubrication bearing 62, self-lubricating
Axle sleeve 62 slides axially along shell 62 to focus to light under the drive of knob 60.The application moves focus lamp by knob 60
66 change focused laser spot point position, adjust fine and flexibly, adjustable extent 10mm~20mm, precision 0.05mm.
Referring to Fig. 2, water spray module 9 includes protection eyeglass 90, water inlet take over 92, installation nut set 94, nozzle 96 and spray
Water mantle 98.The upper end of water spray sleeve 98 is fixed with protection eyeglass 90 and is connect with the branch sleeve of focusing module 6 67, and light goes out
It penetrates direction and passes through protection eyeglass 90, protect eyeglass 90 by upper optical path segment space shown in Fig. 2 and lower water chamber part
Space separates.The lower end of water spray sleeve 98 is threadedly coupled by installation nut set 94 with nozzle 96.It sprays water on the side wall of sleeve 98
Equipped with water inlet take over 92, for connecting water source.
As shown in Figure 3 and Figure 4, the water outlet side wall of nozzle 96 has two gaps being oppositely arranged, and forms and send band mould
The absorption band fixed structure 46 of block 4, enlarged drawing are shown in that Figure 11 and Figure 12, absorption band 44 are penetrated from one of gap and passed through described
It is pierced by (profile of absorption band fixed structure 46 is shown in Figure 10) from another gap after the water column that water spray module sprays so that
Absorption band 44 can only be along the route one-dimensional movement that gap limits, therefore absorption band fixed structure 46 can be in the movement of absorption band 44
When the moment be maintained at nozzle 96 ejection water column center, the three-dimensional partial enlargement picture of nozzle 96 and absorption band fixed structure 46
As shown in Figure 10.Coordinate Fig. 7 simultaneously, Fig. 7 is the upward view of the laser impact intensified device of trailing type, it is seen that absorption band is from fixed knot
The gap of structure 46 is threaded in and out.
Please continue to refer to Fig. 2, described device includes anticollision module 7, and anticollision module 7 is set to focusing module 6 and water spray mould
Between block 9, anticollision module 7 includes protection lantern ring 70, installation nut set 72 and nut pressure ring 74.Protect lantern ring 70 can elastic shape
Become, is installed between the branch sleeve 67 of focusing module 6 and water spray module 9 simultaneously by installing nut set 72 and nut pressure ring 74
The shock and vibration that the water spray module is subject to are buffered, in addition to playing cushioning effect in accident collision, additionally it is possible to avoid described
The lasting working impact and conduct vibrations that device light path part in laser shocking processing workpiece fabrication is subject to light path part,
And then the precision of light path part can be kept not reduce always, kept for the longer working time without frequently adjusting light path.
Protection lantern ring 70 is made of elastic material, and typically stretchy nylon plastics are made.
Referring to Fig. 1, sending the driver formed including 40, four delivery wheels of synchronous motor and two expansion tightening wheels with module 4
Structure 42 (being delivery wheel 420, delivery wheel 422, delivery wheel 424, delivery wheel 426, expansion tightening wheel 428 and expansion tightening wheel 429 in Fig. 1) and suction
Take-up 44, synchronous motor 40 drive absorption band 44 to move by delivery wheel in transmission mechanism 42 and expansion tightening wheel, and absorption band 44 is worn
Cross the gap absorption band fixed structure 46 formed of nozzle 96 in water spray module 9 and the water column sprayed across nozzle 96.It send
Concrete structure with module 4 please refers to Fig. 3, Fig. 4 and Fig. 5.The step frequency of synchronous motor 40 and the trailing type laser-impact
The shock peening working frequency of intensifying device is consistent.Described device often carries out a laser pulse, and synchronous motor 40, which drives, to be inhaled
The part of the absorption band 44 of laser irradiation, is removed the center of nozzle 96 by 44 advance a distance of take-up, and by new one
Section absorption band 44 moves to the center of nozzle 96 to prepare to receive the irradiation of next laser pulse.44 each laser pulse of absorption band moves
Dynamic distance can be determined according to spot size that laser during laser-impact irradiates on the absorption band, ablation range.
Absorption band 44 can be selected from aluminium foil strip and other metallic foils, be also selected from the deeper organic polymer of color
Band is preferably free of the black belt of sticky glue-line, typically the black PVC of 0.15mm thickness.The width of absorption band 44 is no more than
The outer diameter of nozzle 96 and gap (absorption band fixed structure 46) that can be on nozzle 96.
Please continue to refer to Fig. 1, described device includes image-forming module 8, and image-forming module 8 includes ccd image sensor 80 and peace
Sleeved 82, ccd image sensor 80 by installation sleeve 82 can up and down adjustment the speculum for being connected to light path input module 2
28 upper end, as shown in Figure 6.80 height of ccd image sensor is adjustable, and positioning accuracy can be improved, and observation is convenient.Speculum 28 is
Another transmission, the side light-permeable towards ccd image sensor 80, to observe hot spot and coordinate light path defeated are reflected on one side
Enter module 2 and adjusts position and the cooperation focusing of focusing module 6.Side of the speculum 28 towards the laser or the optical fiber is anti-
Penetrate the water column that light and coaxial directive nozzle 96 spray.
Above compact-sized, modularized design to switch different processing methods very flexible.
The system connection figure of the laser impact intensified device of trailing type of the application is as shown in figure 13, and described device further includes meter
Calculation machine, controller, pressurized tank, water pump, gas generator, pressure gauge, flowmeter, it is the controller and the laser, described
Synchronous motor, water pump and gas generator electrical connection, the pressurized tank are connect with 92 water route of water inlet take over, the pressure gauge and stream
Gauge is located on the pressurized tank and 92 direct water pipe of water inlet take over.The controller and the water pump and gas generator electricity
Connection, controller control described in the controller is under the program control of the computer, by water pump and gas generator, with
Control the hydraulic pressure in the pressurized tank.Under the program control of the computer, control is described to synchronize electricity for the controller control
The step frequency of machine is consistent with the shock peening working frequency of the laser impact intensified device of the trailing type.
When the laser impact intensified device of trailing type of the application works, which utilizes short laser pulse
(generally within 50 nanoseconds), high power density (GW/cm2Rank) laser pass through transparent restraint layer (the application is water), make
Absorption band 44 for workpiece surface.Absorbing protective layer --- absorption band 44 gasifies rapidly after absorbing laser energy, is formed thick
Close high temperature, high pressure plasma, the plasma continue steep temperature rise after absorbing laser energy and expand, and form shock wave, punching
Intensity of wave is hit up to several GPa (109Pa) magnitude is far above the yield strength of many workpiece materials；The shock wave, which passes through, to be absorbed
Protective layer acts on workpiece surface and to its internal communication, so that workpiece surface is generated plastic deformation and residual compressive stress field, cause
The plastic deformation of skin-material, dislocation density increase, and lead to crystal grain refinement, compression and hardness increase, to significantly improve material
Antifatigue, the wear-resistant and corrosion resistance of material.
The laser impact intensified operating procedure of the laser impact intensified device of trailing type of the application is as follows：
A) water, which enters, forms water cavity in water spray unit, and the head of the nozzle of water spray unit sprays, and absorption band is rushed water column
It hits under pressure and is close to workpiece surface；
B) laser beam is by protecting eyeglass coaxially through the water column directive of water cavity and nozzle ejection in water spray unit
Step a) the absorption bands for being close to workpiece surface carry out primary laser impact intensified；
C) described device relatively moves to next impact site with the workpiece, while the motor drives the absorption
With the mobile distance more than laser facula, the laser impact intensified process of step b) is repeated.
Specifically, when the laser impact intensified device work of the trailing type of the application, deionized water by intake take over 92 into
The sleeve 98 that enters to spray water is interior to form water cavity, and is sprayed by the outlet of 96 bottom of sprinkler head.Laser is connected to institute by connecting plate 20
It states on device, laser beam is radiated at focus lamp 66 via light path input module 2 and through its adjustment after being reflected by reflective mirror 28
On, light beam after the focusing of focus lamp 66, by protect 90 coaxial directive of eyeglass spray water sleeve 98 in formed water cavity and
The water column that nozzle 96 sprays then passes through total reflection and is limited in the region of water column constraint.When laser impact intensified technique needs
Want water column diameter 0.5mm~1.5mm, water column length (processing plane to protect eyeglass 90 the distance between lower surface) be
When 15mm~20mm, laser can realize multiple reflections in water column, and then realize the control of the equal field and spot size of light beam.
Synchronous motor 40 is consistent with shock peening working frequency, and impact is primary, and synchronous motor pulls absorption band 44 to walk.Such as Fig. 9 institutes
Show, 40 upper end of stepper motor is set there are one Work-feeding means.It is equipped among Work-feeding means and send band gear, band gear and supply roll is sent to hold
Connection fixes Work-feeding means into band edge part fixing nut, and the Work-feeding means one end side is equipped with forward (FWD) mouth, described that band is sent to fill
It sets other end side and is equipped with band outlet, as shown in Figure 1.This send band system structure simple, easy to use, adjustable to send the elastic of band
Degree send band edge part extruding spring to reload as long as hand is pinned, and flexible structure alterability is strong, can be according to oneself needs
Make proximal end feed device into.Gear is acted on by elastomeric element and limit guide block, and absorption band 44 is close to roll by gear extrusion
Dynamic bearing.Due to being sliding friction between absorption band 44 and rolling bearing, when gear rotates, drive band in gear and bearing
Between move.The step frequency of synchronous motor 40 and pulse laser shock peening working frequency are set to consistent again, it is final real
Existing pulse laser impact is primary, and synchronous motor pulls the effect of one section of the advance of absorption band 44.
When the laser impact intensified device work of the trailing type of the application, the connecting plate 20 of light path input module 2 can also be with
Optical fiber laser be adapted to, can be widely applied for a variety of materials, various complex contours workpiece surface carry out it is laser impact intensified
Processing extends workpiece service life, is a kind of high full production division product of cost performance.
The laser impact intensified device of trailing type of the application is reduced existing water constraint layer by way of light-water coaxial and applied
Parameter fluctuation caused by mode improves stability and the flexibility of processing.Total reflection when injecting air from the water surface using light beam
Realize the constraint and shaping of laser beam.Reinforce the binding effect of water constraint layer using the kinetic energy of water.By being carried in terms of above three
High laser impact intensified effect reduces its difficulty implemented that dynamicization, be factory produced.
The technical solution of the application reduces parameter caused by existing water constraint layer applying mode by way of light-water coaxial
Fluctuation, improves stability and the flexibility of processing.Meanwhile laser beam is realized in total reflection when injecting air from the water surface using light beam
Constraint and shaping.Finally, reinforce the binding effect of water constraint layer using the kinetic energy of water.By improving laser in terms of above three
The effect of shock peening reduces its difficulty implemented automation, be factory produced.The technical solution of the application by using with
The metal foil or black tape of dynamic formula as absorbed layer, can accomplish while shock treatment, while tape transport, due to absorbing at not being attached at
Workpiece surface, workpiece surface need not be post-processed without other materials, have high order, high efficiency progress laser-impact strong
Change the advantage of processing.
The above is only several embodiments of the application, not does any type of limitation to the application, although this Shen
Please disclosed as above with preferred embodiment, however not to limit the application, any person skilled in the art is not taking off
In the range of technical scheme, makes a little variation using the technology contents of the disclosure above or modification is equal to
Case study on implementation is imitated, is belonged in technical proposal scope.
Claims (10)
1. a kind of laser impact intensified device of trailing type, which is characterized in that described device includes light path input module, send band mould
Block, focusing module, water spray module；
One end of the light path input module connects and introduces light source, and the other end is connect with the focusing module and light path communicates；
The other end of the focusing module is connect with the water spray module；It is described that send band module include motor, transmission mechanism and absorption band,
The motor drives the absorption band to move by transmission mechanism, and the absorption band passes through the water column that the water spray module sprays.
2. the laser impact intensified device of trailing type according to claim 1, which is characterized in that the motor is to synchronize electricity
Machine, the step frequency of the synchronous motor are consistent with the shock peening working frequency of the laser impact intensified device of the trailing type；
Preferably, the laser impact intensified device of the trailing type includes controller, the controller and the light source, described synchronous
Motor is electrically connected, and the controller controls the step frequency and the laser impact intensified device of the trailing type of the synchronous motor
Shock peening working frequency is consistent；
Preferably, the laser impact intensified device of the trailing type includes pressurized tank, water pump and gas generator, the controller with
The water pump and gas generator electrical connection, the pressurized tank are connect with the water spray module water route, and the controller passes through water
Pump and gas generator are to control the hydraulic pressure in the pressurized tank.
3. the laser impact intensified device of trailing type according to claim 1, which is characterized in that described to send band module including inhaling
Take-up fixed structure, the absorption band fixed structure are fixedly connected on the water spray exit of the water spray module, the absorption band
The moving direction of the absorption band is fixed on the water column center that the water spray module sprays by fixed structure；
Preferably, the absorption band tensile strength scope is 30N/cm to 300N/cm；
Preferably, the absorption band is at least one wavelength in 10640nm, 1064nm, 800nm, 532nm, 517nm, 355nm
Laser absorptivity be not less than 95%；
Preferably, the thickness of the absorption band is 0.01mm~0.2mm.
4. the laser impact intensified device of trailing type according to claim 1, which is characterized in that the transmission mechanism includes extremely
A few delivery wheel and at least one expansion tightening wheel；
Preferably, the transmission mechanism includes the first delivery wheel, the first expansion tightening wheel, the second delivery wheel of described device side, with
And third delivery wheel, the second expansion tightening wheel, the 4th delivery wheel of the described device other side；
The absorption band sequentially passes through the first delivery wheel, the first expansion tightening wheel, the second delivery wheel, described under the drive of the motor
The spray outlet end for module of spraying water, third delivery wheel, the second expansion tightening wheel, the 4th delivery wheel.
5. the laser impact intensified device of trailing type according to claim 1, which is characterized in that the light path input module packet
Include connecting plate, positioning pin, light path adjustment block, elastic adjusting sleeve and speculum；
Laser or optical fiber are connected to by the positioning pin in the elastic adjusting sleeve by the connecting plate, the elasticity adjustment
Set is resiliently attached to the light path adjustment block, and connection, the speculum are can adjust between the light path adjustment block and described device
It is fixed in described device and reflects the light that the laser or the optical fiber are sent out；The light path input module adjustment output
Light path and the water column that the water spray module sprays are coaxial.
6. the laser impact intensified device of trailing type according to claim 5, which is characterized in that described device includes imaging mould
Block, the image-forming module include ccd image sensor and installation sleeve；
The ccd image sensor can be connected to the light path input module by the installation sleeve along what light moved axially
Speculum upper end；Side light transmission of the mirror surface to the ccd image sensor, the mirror surface is to the laser
The side of device or the optical fiber is reflective.
7. the laser impact intensified device of trailing type according to claim 1, which is characterized in that the focusing module includes rotation
Button, self lubrication bearing, shell, branch sleeve, focus lamp and focusing mirror holder；
The focus lamp is fixed on the self lubrication bearing by the focusing mirror holder；The self lubrication bearing is in the knob
It is slid axially along shell to focus to light under drive.
8. the laser impact intensified device of trailing type according to claim 1, which is characterized in that the water spray module includes spray
The water outlet side wall of head, the nozzle has two gaps being oppositely arranged to form absorption band fixed structure；
The absorption band is worn after the water column that one of gap penetrates and pass through the water spray module to spray from another gap
Go out；The moving direction of the absorption band is fixed on the water column center that the water spray module sprays by the absorption band fixed structure.
9. the laser impact intensified device of trailing type according to claim 1, which is characterized in that the water spray module includes protecting
Protecting lens, water spray sleeve, water inlet take over, install nut set, nozzle；
Described water spray sleeve one end is fixed with the protection eyeglass and is connect with the beam projecting direction of the focusing module, described
The water spray sleeve other end is covered by the installation nut to be threadedly coupled with the nozzle；The protection eyeglass by the water spray module with
The space of the focusing module separates；
The side wall of the water spray sleeve is equipped with the water inlet and takes over.
10. the laser impact intensified device of trailing type according to claim 1, which is characterized in that described device includes anticollision
Module, the anticollision module are set between focusing module and the water spray module, and the anticollision module includes protection lantern ring, peace
Loading nut covers and nut pressure ring；
The protection lantern ring elastically deformable is installed on the focusing module and institute by installation nut set and nut pressure ring
State between spraying water module and buffer the shock and vibration that the water spray module is subject to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260752.7A CN108296639B (en) | 2016-12-30 | 2016-12-30 | Follow-up laser shock peening device |
| PCT/CN2017/073493 WO2018120361A1 (en) | 2016-12-30 | 2017-02-14 | Follow-up-type device for laser shock peening treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260752.7A CN108296639B (en) | 2016-12-30 | 2016-12-30 | Follow-up laser shock peening device |
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| CN108296639A true CN108296639A (en) | 2018-07-20 |
| CN108296639B CN108296639B (en) | 2023-10-24 |
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| WO (1) | WO2018120361A1 (en) |
Cited By (2)
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| CN110275267A (en) * | 2019-01-11 | 2019-09-24 | 广东镭奔激光科技有限公司 | The focus lamp of laser impact intensified fixed optical path prevents damaging device and method |
| CN111906438A (en) * | 2020-06-19 | 2020-11-10 | 宁波大艾激光科技有限公司 | Follow-up laser shock peening device and method |
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Also Published As
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| CN108296639B (en) | 2023-10-24 |
| WO2018120361A1 (en) | 2018-07-05 |
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