CN104772569B - The laser-impact micro-forming device and its microsecond delay technique of a kind of medical titanium alloy plate - Google Patents
The laser-impact micro-forming device and its microsecond delay technique of a kind of medical titanium alloy plate Download PDFInfo
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- CN104772569B CN104772569B CN201510155990.0A CN201510155990A CN104772569B CN 104772569 B CN104772569 B CN 104772569B CN 201510155990 A CN201510155990 A CN 201510155990A CN 104772569 B CN104772569 B CN 104772569B
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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
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0652—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising 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
- B23K26/352—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
Abstract
The invention discloses a kind of laser-impact micro-forming device of medical titanium alloy plate and its microsecond delay technique, its device part, by the basis of existing laser-impact micro-forming device, being used as restraint layer by setting up transparent material plate, setting up detecting system；In its microsecond delay technique, it is used as the technological means such as absorbed layer by spraying pitch-dark layer on the titanium alloy sheet for treat microsecond delay, it is set to be applied to the micro-forming of medical titanium alloy plate, and the microsecond delay of the micron order even submicron order of titanium alloy sheet is realized, the reliable and stable of its microsecond delay quality, precision are high；And the wearability, corrosion resistance and the ability of antifatigue damage on the titanium alloy sheet surface after microsecond delay can be greatly improved, and then the service life of medical titanium alloy plate microsecond delay finished product can be greatly improved.
Description
Technical field
The present invention relates to a kind of laser-impact micro-forming device of metal material and its microsecond delay technique, more particularly to one kind
Laser-impact micro-forming device and its microsecond delay technique suitable for medical titanium alloy plate.
Background technology
In recent years, various biomedical materials have obtained extensive development and application, and particularly titanium alloy is in biomedicine
Research in field and using showed increased.Titanium alloy has higher intensity and toughness, reparation suitable for sclerous tissues and solid
It is fixed.Wherein, Titanium alloy Ti-6Al-4V (TC4) because its have superior corrosion resistance, high specific strength and good biocompatibility,
The features such as being suitable for implantation into and be widely used in biomedical sector.
But its case hardness of titanium alloy material in itself is low, wears no resistance.Once the moreover, corrosion resistant of titanium alloy product
Corrosion can not be high, the titanium alloy after excessive erosion, and its vanadium contained will enter human body in the form of an ion, and then trigger inflammation.Cause
This, generally requires by means of technological means such as surface modifications, to improve the decay resistance of its product, to meet medical domain
Using needs.
Chinese patent application CN1128689C discloses a kind of laser-impact accurate forming method and device, and it utilizes strong arteries and veins
Laser beam strikes workpiece surface flexible lamina, the gasification of its top layer is set to ionize and form shock wave, due to caused impact wave pressure
Power peak value exceedes the dynamic yield strength of material, so that workpiece material is plastically deformed.
Above-mentioned technical proposal provides a good technical thought for metal forming, but its there is also it is many not
Foot part, such as：
1st, in its Laser Shock Forming Process, impulsive force is in Gaussian Profile, inevitably, will cause to shape it is uneven,
And then influence the machining accuracy and uniformity of material surface；
2nd, in fact, in Laser Shock Forming Process, the material deflection of each shock point position certainly exists certain journey
The difference of degree, and in the Laser Shock Forming Process of above-mentioned technical proposal, its laser intensity is constant all the time, and this is further constrained
The reliability and stability of its forming accuracy.
The content of the invention
An object of the present invention is to provide one kind and shaped suitable for medical titanium alloy plate micron order, shapes quality
It is reliable and stable, the laser-impact microsecond delay for the medical titanium alloy plate that the titanium alloy surface wearability after being processed into can be improved
Device.
The technical scheme that the present invention uses to achieve the above object is a kind of laser-impact microsecond delay of medical titanium alloy plate
Device, including computer, numerical control table, NC table, laser, light path guiding system and cavity plate assembly；Wherein：
Numerical control table, NC table is arranged on the workbench of forcing press, is arranged on press bench into slidable connection, edge
Slide rail on press bench is moved, and fixture is additionally provided with numerical control table, NC table；
The cavity plate assembly includes edge-pressing board and cavity plate body；
The light path guiding system includes prism, collimater, laser-impact head and focus lamp；
The laser is arranged on the surface of the cavity plate body, and for launching laser beam, the laser beam enters light path
Guiding system, successively enter laser-impact head, the second prism in laser-impact head through the first prism, collimater
Incoming laser beam is reflected, line focus mirror focusing again, injected in cavity plate, for laser-impact microsecond delay；Wherein, laser-impact head
Orientation can surround the cavity plate carry out any regulation with upper and lower orientation all around；
The computer is the control centre of laser-impact micro-forming device, for the laser beam for controlling laser to be launched
The size and control laser-impact head and numerical control movable workbench of power density；
Characterized in that, also including a detecting system, the detecting system includes synchrotron radiation light source, detection
Device, pulse amplifier, pulse-height analyzer and counter；
The first from left right side of synchrotron radiation optical light source and detector one is separately positioned on the top of the cavity plate body both sides
Opening position, respectively as the emitter and reception device of detection laser；
Pulse amplifier, pulse-height analyzer, counter are connected in series by the detector successively by data wire, and
Finally it is connected with the computer communication；
By the computer by conveying the signal come progress operational analysis to the detecting system, and according to operational analysis
As a result the laser beam power density size launched laser enters Mobile state adjustment in good time, so that the work of laser-impact microsecond delay
Make state and be in perfect condition all the time；
During above-mentioned laser-impact micro-forming device work, treat that the titanium alloy sheet of microsecond delay is placed on the cavity plate, it is described
It is 30-60 μm pitch-dark that a layer thickness is coated with the face to be processed of titanium alloy sheet, and upward, it is capped the pitch-dark layer again above
Plate made of the transparent material as restraint layer thick one piece of 1.5-2mm；The size of the plate is more than or equal to described
The size of titanium alloy sheet, the plate integrally cover in the face to be processed of the titanium alloy sheet；
Above-mentioned titanium alloy sheet and restraint layer are pushed down by the edge-pressing board, the cavity plate assembly are assembled, what is assembled is recessed
Mould assembly is clamped by fixture, is fixed on the numerical control table, NC table.
The technical effect directly brought by the technical proposal is that pass through the laser-impact micro-forming device base in prior art
On plinth, by increasing detecting system, pitch-dark layer (being used as absorbed layer) being sprayed on the titanium alloy sheet for treat microsecond delay, and treat it is micro-
Plate made of layer of transparent material is capped on the titanium alloy sheet of shaping, as the series technique means such as absorbed layer, is applied to it
The micro-forming of medical titanium alloy plate, and the microsecond delay of the micron order even submicron order of titanium alloy sheet is realized, its is micro-
The stabilization of forming quality, reliable, precision is high.
To more fully understand above-mentioned technical characterstic, existing brief analysis, illustrate it is as follows：
1st, in above-mentioned technical proposal, one layer of 30-60 micron is formed by being sprayed on the titanium alloy sheet surface for treat microsecond delay
Thick pitch-dark layer, absorbed layer be used as by the use of the pitch-dark layer so that laser blast wave is in plasma caused by absorbed layer, with to sharp
Photo-thermal effect is shielded, and so as to effectively prevent the fire damage to processing work face, and can increase the pressure of shock wave
Peak value.
2nd, the purpose for setting up restraint layer is that foregoing absorbed layer is produced the plasma of HTHP by induced with laser
Body, plasma, which drastically expands blast, will produce strong shock wave, and plasma can drastically be expanded to blast by the restraint layer
Caused strong shock wave stops, formed reverse impact ripple, produce be up to the GPa orders of magnitude pressure, the reverse impact wave pressure to
Workpiece surface and interior tissue (when pressure caused by the reverse impact ripple exceedes the dynamic yield stress value of workpiece, Jiu Hui
Material surface produces plastic deformation)；
What is more important, it is this to integrate titanium alloy sheet microsecond delay and the combined shaping to titanium alloy sheet surface peening
Technology, the quality of microsecond delay is not only ensure that, and titanium alloy sheet material surface energy enough forms residual compressive stress after microsecond delay
Layer, and cause surface microscopic even tissue and the refinement of titanium alloy sheet, so as to greatly improve the titanium alloy sheet surface after microsecond delay
Wearability, corrosion resistance and fatigue life.
It is not difficult to find out, above-mentioned 1 and 2, is exactly of the invention on the basis of prior-art devices, realizes to medical titanium alloy
The key problem in technology of plate microsecond delay.
3rd, in above-mentioned technical proposal, by setting up detecting system and the fortune of this technological means being connected with computer communication
With so that laser-impact micro-forming device is during microsecond delay, by computer by detecting system is conveyed come signal enter
Row operational analysis, and the laser beam power density size launched according to operational analysis laser enters Mobile state adjustment in good time,
So that the working condition of laser-impact microsecond delay is in perfect condition all the time, so as to ensure that the steady of laser-impact microsecond delay quality
It is fixed and reliable.Specific detection process under computer control with being dynamically adjusted in good time：
During point-by-point impact shapes, incoming laser beam that detecting system is sent by synchrotron radiation light source
Project on the surface of titanium alloy sheet, reflection laser is received by detector, and be converted to electric pulse, electric pulse is put by amplifier
Enter after big in pulse-height analyzer, and be converted to signal pulse, after signal pulse is sent into counter, be re-fed into calculating
The operational analysis of error and parameters revision is carried out in machine；Through computer operational analysis result, by workpiece surface incident laser point
Analysis result is compared with this theory deformation value, and according to comparison result, analysis draws the institute for processing the position next time
Laser-impact energy value is needed, and controls laser to process the laser beam energy value sent needed for next position, meanwhile, calculate
Machine controls numerical control table, NC table and laser-impact head to be moved to next shock point position, carries out the impact forging of the point.
As can be seen that above-mentioned 3, it is ensured that the Stability and dependability of the micro-forming quality of medical titanium alloy plate.
Preferably, plate made of above-mentioned transparent material is lucite or quartz glass plate.
What the optimal technical scheme was directly brought has the technical effect that, convenient material drawing, and cost is cheap.In theory, can also adopt
The container of the hexahedral shape produced with transparent material, container is interior to be substituted full of distilled water, but similar this mode, its
Process is complicated, high expensive.
Further preferably, the thickness of above-mentioned pitch-dark layer is 50 μm.
What the optimal technical scheme was directly brought has the technical effect that, actual use experience have shown that, the thickness of pitch-dark layer is 50 μ
It is best to the shield effectiveness of laser thermal effect during m.
The second object of the present invention is to provide a kind of shaping of the laser-impact micro-forming device of above-mentioned medical titanium alloy plate
Technique, it has, and easy to operate, forming accuracy is high, and can improve shaping after titanium alloy sheet surface wearability the features such as.
The present invention is to achieve the above object the technical scheme adopted is that a kind of swashing using above-mentioned medical titanium alloy plate
Light impacts the microsecond delay technique of micro-forming device, it is characterised in that comprises the following steps：
The first step, the medical titanium alloy plate blank material that thickness is 30~60 μm is cut to less than or equal to cavity plate body
Size, through polishing, mirror-finishing, to surface roughness≤0.06 μm, then after alignment, the titanium alloy for treating microsecond delay is made
Plate；
Even application is pitch-dark, dries in the air naturally on a surface on one of two surfaces up and down of above-mentioned titanium alloy sheet
It is dry, pitch-dark, naturally dry again is sprayed again；The above-mentioned spraying of repetition is pitch-dark to be operated with naturally dry, until titanium alloy sheet upper table
The thickness of the pitch-dark layer in face reaches 30-60 μm；
The titanium alloy sheet for being coated with pitch-dark layer is placed on cavity plate, by be coated with pitch-dark layer that up, thereon
It is used as plate made of the transparent material of restraint layer in the capping of face, then is pushed down with edge-pressing board, cavity plate assembly is assembled, assembled
Cavity plate assembly clamp and be fixed on the numerical control table, NC table by fixture；
Second step, start laser, be 5ns~15ns by laser beam pulses width modulated caused by laser, make laser
Beam is by light path guiding system irradiation to the surface for treating microsecond delay for the titanium alloy sheet for treating microsecond delay；
3rd step, under control of the computer, the position of numerical control table, NC table and laser-impact head is adjusted, to laser-impact head
It is directed at the source location set for treating required impact forging on the surface of microsecond delay of titanium alloy sheet；
Laser is adjusted, to produce power density more than 108W/cm2Intense pulse laser bcam, by laser-impact head using should
Intense pulse laser bcam impacts the source location set for treating required impact forging on the surface of microsecond delay of titanium alloy sheet, makes titanium alloy sheet
It is plastically deformed, completes the impact forging of the location point；
Under control of the computer, by the shock point position distribution of program setting, numerical control table, NC table is constantly adjusted in order
With the position of laser-impact head, successively laser-impact head alignment titanium alloy sheet treat required impact forging on the surface of microsecond delay
Next location point, carry out point-by-point impact and shape, until terminating；
4th step, laser is closed, fixture is unclamped and takes out the titanium alloy sheet of machined shaping, is placed in acetone soln and soaks
Bubble, to remove the pitch-dark of residual；Then, cleaned with absolute ethyl alcohol.
The technical effect directly brought by the technical proposal is that forming accuracy, which is micron order, is even up to submicron order,
In summary, the present invention has the advantages that relative to prior art：
1st, it is simple in construction, easy to operate；
2nd, the quality stability of medical titanium alloy plate microsecond delay is good, reliability is high；
3rd, the wearability, corrosion resistance and the energy of antifatigue damage on the titanium alloy sheet surface after microsecond delay can be greatly improved
Power, and then greatly improve the service life of medical titanium alloy board finished product.
Brief description of the drawings
Fig. 1 is the aufbauprinciple schematic diagram of the present invention；
Fig. 2 is the operation principle schematic diagram of the present invention.
Description of reference numerals：1- synchrotron radiation light sources, 2- lasers, 3- collimaters, the prisms of 4- second, 5- are focused on
Mirror, 6- detectors, 7- amplifiers, 8- pulse-height analyzers, 9- counters, 10- edge-pressing boards, 11- restraint layers, the pitch-dark layers of 12-
(absorbed layer), 13- titanium alloy sheets, 14- plasma stock waves, 15- numerical control table, NC tables, 16- cavity plate bodies, 17- computers,
18- fixtures, 19- laser-impact heads, the prisms of 20- first, 21- pulse laser beams, 22- plates (restraint layer), 23- plasmas
Body.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, the laser-impact micro-forming device of medical titanium alloy plate of the invention, including computer (figure
Middle omission is not shown), numerical control table, NC table 15, laser 2, light path guiding system and cavity plate assembly；Wherein：
Numerical control table, NC table 15 is arranged on the workbench of forcing press, with press bench into slidable connection, along setting
Slide rail on press bench is moved, and fixture 18 is additionally provided with numerical control table, NC table；
Above-mentioned cavity plate assembly includes edge-pressing board 10 and cavity plate body 16；
Above-mentioned light path guiding system includes the first prism 20, collimater 3, laser-impact first 19 and focus lamp 5；
Above-mentioned laser 2 is arranged on the surface of cavity plate body 16, and for launching laser beam, the laser beam draws into light path
Guiding systems, successively enter laser-impact the first 19, the in laser-impact head the 2nd 3 through the first prism 20, collimater 3
Prism 4 reflects incoming laser beam, line focus mirror 5 focuses on again, forms pulse laser beam 21 and injects in cavity plate body 16, for swashing
Light impacts microsecond delay；Wherein, the orientation of above-mentioned laser-impact head can surround cavity plate body carry out all around with upper and lower orientation
Any regulation；
Above computer is the control centre of laser-impact micro-forming device, for the laser beam for controlling laser to be launched
The size and control laser-impact head and numerical control movable workbench of power density；
The laser-impact micro-forming device of above-mentioned medical titanium alloy plate, also includes a detecting system, said detecting system
Including synchrotron radiation light source 1, detector 6, pulse amplifier 7, pulse-height analyzer 8 and counter 9；
Above-mentioned synchrotron radiation light source 1 is separately positioned on the upper of above-mentioned cavity plate body both sides with the first from left right side of detector 6 one
Square opening position, respectively as the emitter and reception device of detection laser；
Above-mentioned detector 6 is by data wire successively by pulse amplifier 7, pulse-height analyzer 8, the company of series connection of counter 9
Connect, and finally communicate and connect with above computer；
By above computer by said detecting system is conveyed come signal carry out operational analysis, and according to operational analysis
The laser beam power density size launched laser enters Mobile state adjustment in good time, so that the work shape of laser-impact microsecond delay
State is in perfect condition all the time；
During above-mentioned laser-impact micro-forming device work, treat that the titanium alloy sheet 13 of microsecond delay is placed on above-mentioned cavity plate body 16
On, it is 30-60 μm pitch-dark that a layer thickness is coated with the face to be processed of above-mentioned titanium alloy sheet 13, the pitch-dark layer 12 upward, its
It is capped plate 11 made of the thick transparent materials as restraint layer of lastblock 1.5-2mm again above；
The size of above-mentioned plate is more than or equal to the size of above-mentioned titanium alloy sheet, and the plate 11 is by the to be added of titanium alloy sheet
Work face integrally covers；
Above-mentioned titanium alloy sheet and plate 11 are pushed down by above-mentioned edge-pressing board, above-mentioned cavity plate assembly are assembled, what is assembled is recessed
Mould assembly is clamped by fixture, is fixed on above-mentioned numerical control table, NC table.
Plate made of above-mentioned transparent material is preferably lucite plate or quartz glass plate.
The thickness of above-mentioned pitch-dark layer is preferably 50 μm.
To more fully understand the present invention, now it is further described using such as the above-mentioned medical titanium alloy plate of claim 1
Laser-impact micro-forming device forming technology.
Its microsecond delay processing step is as follows：
The first step, the medical titanium alloy plate blank material that thickness is 30~60 μm is cut to less than or equal to cavity plate body
Size, through polishing, mirror-finishing, to surface roughness≤0.06 μm, then after alignment, the titanium alloy for treating microsecond delay is made
Plate；
Even application is pitch-dark, dries in the air naturally on a surface on one of two surfaces up and down of above-mentioned titanium alloy sheet
It is dry, pitch-dark, naturally dry again is sprayed again；The above-mentioned spraying of repetition is pitch-dark to be operated with naturally dry, until titanium alloy sheet upper table
The thickness of the pitch-dark layer 12 in face reaches 30-60 μm；
The titanium alloy sheet for being coated with pitch-dark layer is placed on cavity plate body 16, that for being coated with pitch-dark layer is faced
On, it is used as plate 11 made of the transparent material of restraint layer above in capping, then is pushed down with edge-pressing board, and cavity plate assembly is assembled
Good, the cavity plate assembly assembled is clamped and is fixed on above-mentioned numerical control table, NC table 15 by fixture；
Second step, start laser, be 5ns~15ns by laser beam pulses width modulated caused by laser, make laser
Beam is by light path guiding system irradiation to the surface for treating microsecond delay of titanium alloy sheet 13 for treating microsecond delay；
3rd step, under control of the computer, the position of numerical control table, NC table 15 and laser-impact first 19 is adjusted, rushed to laser
Tap the head the source location sets for treating required impact forging on the surface of microsecond delay of 19 alignment titanium alloy sheets 13；
Laser is adjusted, to produce power density more than 108W/cm2Intense pulse laser bcam, utilized by laser-impact first 19
The intense pulse laser bcam impacts the source location set for treating required impact forging on the surface of microsecond delay of titanium alloy sheet 13, closes titanium
Golden plate is plastically deformed, and completes the impact forging of the location point；
Under control of the computer, by the shock point position distribution of program setting, numerical control table, NC table is constantly adjusted in order
15 and the position of laser-impact first 19, successively laser-impact first 19 alignment titanium alloy sheet 13 treat required punching on the surface of microsecond delay
Next location point of shaping is hit, point-by-point impact is carried out and shapes, until terminating；
4th step, laser is closed, fixture is unclamped and takes out the titanium alloy sheet of machined shaping, is placed in acetone soln and soaks
Bubble, to remove the pitch-dark of residual；Then, cleaned with absolute ethyl alcohol.
As shown in Fig. 2 the operation principle of the laser-impact micro-forming device of above-mentioned medical titanium alloy plate is：
Pulse laser beam 21 after the focusing of focus lamp 5 is radiated on pitch-dark layer 12 (absorbed layer), will send out absorbed layer
Raw explosive gas, and plasma stock wave is formed, now the restraint layer 11 above absorbed layer will constrain plasma 23
Diffusion, and stopped and to form reverse plasma stock wave 14, the pressure for being up to the GPa orders of magnitude is produced, when pressure exceedes
During the dynamic yield stress value of titanium alloy sheet 13, the surface of titanium alloy material will produce plastic deformation, so as in the effect of concave template
Under realize microsecond delay.
Claims (3)
1. a kind of microsecond delay technique of the laser-impact micro-forming device of medical titanium alloy plate, the laser-impact micro-forming device
Including computer, numerical control table, NC table, laser, light path guiding system and cavity plate assembly；Wherein：
Numerical control table, NC table is arranged on the workbench of forcing press, and pressure is arranged on into slidable connection, edge with press bench
Slide rail on machine worktable is moved, and fixture is additionally provided with numerical control table, NC table；
The cavity plate assembly includes edge-pressing board and cavity plate body；
The light path guiding system includes prism, collimater, laser-impact head and focus lamp；
The laser is arranged on the surface of the cavity plate body, and for launching laser beam, the laser beam guides into light path
System, successively enter laser-impact head through the first prism, collimater, the second prism in laser-impact head will enter
Laser beam reflection, the again focusing of line focus mirror are penetrated, is injected in cavity plate, for laser-impact microsecond delay；Wherein, the side of laser-impact head
Position can surround the cavity plate and carry out any regulation with upper and lower orientation all around；
The computer is the control centre of laser-impact micro-forming device, for the laser beam power for controlling laser to be launched
The size and control laser-impact head and numerical control movable workbench of density；
Characterized in that, the laser-impact micro-forming device also includes a detecting system, the detecting system includes synchronous
Accelerate radiating light source, detector, pulse amplifier, pulse-height analyzer and counter；
The first from left right side of synchrotron radiation optical light source and detector one is separately positioned on the top position of the cavity plate body both sides
Place, respectively as the emitter and reception device of detection laser；
Pulse amplifier, pulse-height analyzer, counter are connected in series by the detector successively by data wire, and finally
It is connected with the computer communication；
By the computer by conveying the signal come progress operational analysis to the detecting system, and according to operational analysis result
The laser beam power density size launched laser enters Mobile state adjustment in good time, so that the work shape of laser-impact microsecond delay
State is in perfect condition all the time；
During above-mentioned laser-impact micro-forming device work, treat that the titanium alloy sheet of microsecond delay is placed on the cavity plate, the titanium closes
It is 30-60 μm pitch-dark that a layer thickness is coated with the face to be processed of golden plate, and upward, it is capped lastblock to the pitch-dark layer again above
Plate made of the transparent material as restraint layer thick 1.5-2mm；The size of the plate is closed more than or equal to the titanium
The size of golden plate, the plate integrally cover in the face to be processed of the titanium alloy sheet；
Above-mentioned titanium alloy sheet and restraint layer are pushed down by the edge-pressing board, the cavity plate assembly are assembled, the cavity plate assembled is total
Into being clamped, be fixed on the numerical control table, NC table by fixture；
The microsecond delay technique of the laser-impact micro-forming device of above-mentioned medical titanium alloy plate, comprises the following steps：
The first step, the medical titanium alloy plate blank material that thickness is 30~60 μm is cut to the size less than or equal to cavity plate body
Size, through polishing, mirror-finishing, to surface roughness≤0.06 μm, then after alignment, the titanium alloy sheet for treating microsecond delay is made；
Even application is pitch-dark on a surface on one of two surfaces up and down of above-mentioned titanium alloy sheet, naturally dry, then
Secondary spraying is pitch-dark, naturally dry again；The above-mentioned spraying of repetition is pitch-dark to be operated with naturally dry, until titanium alloy sheet upper surface is black
The thickness of enamelled coating reaches 30-60 μm；
The titanium alloy sheet for being coated with pitch-dark layer is placed on cavity plate, by be coated with pitch-dark layer that up, its above plus
Plate made of the transparent material as restraint layer is covered, then is pushed down with edge-pressing board, cavity plate assembly is assembled, what is assembled is recessed
Mould assembly is clamped and is fixed on the numerical control table, NC table by fixture；
Second step, start laser, be 5ns~15ns by laser beam pulses width modulated caused by laser, pass through laser beam
Light path guiding system irradiation is crossed to the surface for treating microsecond delay for the titanium alloy sheet for treating microsecond delay；
3rd step, under control of the computer, the position of numerical control table, NC table and laser-impact head is adjusted, be aligned to laser-impact head
The source location set for treating required impact forging on the surface of microsecond delay of titanium alloy sheet；
Laser is adjusted, to produce power density more than 108W/cm2Intense pulse laser bcam, the strong arteries and veins is utilized by laser-impact head
The source location set for treating required impact forging on the surface of microsecond delay of laser beam strikes titanium alloy sheet, makes titanium alloy sheet
Plastic deformation, complete the impact forging of the location point；
Under control of the computer, by the shock point position distribution of program setting, numerical control table, NC table is constantly adjusted in order and is swashed
The position of light impact head, successively laser-impact head alignment titanium alloy sheet treat the next of required impact forging on the surface of microsecond delay
Individual location point, carry out point-by-point impact and shape, until terminating；
4th step, laser is closed, fixture is unclamped and takes out the titanium alloy sheet of machined shaping, is placed in acetone soln and soaks,
To remove the pitch-dark of residual；Then, cleaned with absolute ethyl alcohol.
2. the forming technology of the laser-impact micro-forming device of medical titanium alloy plate according to claim 1, its feature exist
In plate made of the transparent material is lucite plate or quartz glass plate.
3. the forming technology of the laser-impact micro-forming device of medical titanium alloy plate according to claim 1, its feature exist
In the thickness of the pitch-dark layer is 50 μm.
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| CN201510155990.0A CN104772569B (en) | 2015-04-03 | 2015-04-03 | The laser-impact micro-forming device and its microsecond delay technique of a kind of medical titanium alloy plate |
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| CN201510155990.0A CN104772569B (en) | 2015-04-03 | 2015-04-03 | The laser-impact micro-forming device and its microsecond delay technique of a kind of medical titanium alloy plate |
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| CN104772569B true CN104772569B (en) | 2017-11-14 |
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| JP6363660B2 (en) * | 2016-07-13 | 2018-07-25 | ファナック株式会社 | Laser processing apparatus and laser processing system |
| CN107042254B (en) * | 2017-06-23 | 2019-03-05 | 安徽工业大学 | Metal sheet forming method and device based on laser blast wave and vibrotechnique |
| CN109773328A (en) * | 2019-04-02 | 2019-05-21 | 苏州大学 | A kind of foil surface continuously prepares the method and device of nano-pattern |
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