CN108655569A - A kind of impact of underwater laser is without mold progressive molding device and method - Google Patents
A kind of impact of underwater laser is without mold progressive molding device and method Download PDFInfo
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- CN108655569A CN108655569A CN201810331740.1A CN201810331740A CN108655569A CN 108655569 A CN108655569 A CN 108655569A CN 201810331740 A CN201810331740 A CN 201810331740A CN 108655569 A CN108655569 A CN 108655569A
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- laser
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- progressive molding
- molding device
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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
- B23K26/352—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
- 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
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
- B23K26/1224—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in vacuum
-
- 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
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Abstract
The present invention provides a kind of impacts of underwater laser without mold progressive molding device and method, including computer, laser transmitting system, laser ranging system, workpiece carrying system, the laser beam that femto-second laser emits in laser transmitting system reflexes to beam splitter through plane mirror, then after line focus lens focus be located at workpiece surface top the positions H, the laser beam of femto-second laser transmitting reflexes to beam splitter through plane mirror, then focus is located at the positions H after line focus lens, computer receive laser range finder feedback signal after be calculated and be shown condenser lens go out luminous point to the positions H distance, and the positions computer control H are maintained at 1~1.5mm of top of workpiece surface.The present invention makes water not only make restraint layer, but also make absorbed layer using femtosecond laser breakdown water induction shock wave as power source using transparent medium to the non-linear absorption properties of focusing ultrafast laser, i.e., restraint layer is integrated with absorbed layer, realizes workpiece progressive molding.
Description
Technical field
The present invention relates to laser impact forming and progressive molding fields more particularly to a kind of underwater laser to impact without mold gradually
Into building mortion and method.
Background technology
Micro-plasticity forming is the important technology for manufacturing minute metallic part, new in industrial sensor, MEMS, microrobot etc.
Emerging strategy field plays increasingly important role.But conventional micro-plasticity forming needs small mold, not only increases and is manufactured into
Originally, extend product development cycle, and the stringent centering of the friction, minute asperities mould between mold-material requires and forming
Demoulding is difficult afterwards, all becomes the technology barrier that limitation has mold micro-plasticity forming to develop.Progressive molding, gained target part size and
Performance depends mainly on active force and relative motion between tool and material.Due to have concurrently " no mold ", " Quick-forming " with
And it is easily achieved the advantage of intelligence manufacture, which attracts great attention in recent years.However, progressive molding technology is imitated in forming
Fold and rupture easily occurs during deficiency and foil forming complicated shape in terms of rate, geometric accuracy, quality control on the surface
The problems such as, seriously affect the extensive use of the technology.Scholars propose many novel progressive molding technologies, more potential
Include：Laser assisted progressive molding, two-sided progressive molding, electromagnetism auxiliary progressive molding, electric heating auxiliary progressive molding etc., and on
It is to shape the physical property of process in which materials itself by change to improve geometric accuracy and surface quality to state method mostly.In recent years
Come, with the development of laser technology, laser impact forming receives universal concern, and laser impact forming is to utilize induced with laser
The stress effect that shock wave generates realizes the plastic deformation of metal foil, which can effectively overcome in foil forming process
Rebound problem, while the fatigue strength after material forming can be improved.
Chinese patent CN1751837A discloses a kind of method of underwater laser shock formation, and this method is arranged in front of workpiece
Elastomeric film is as absorbed layer, and after laser irradiation, absorbed layer partial gasification ionizes and formed shock wave, and shock wave transmits in water
Workpiece surface is acted on after a distance to cause to be plastically deformed.This method in workpiece surface although it is contemplated that directly apply absorbed layer
Inconvenience, but due to the attenuation of medium water, the shock wave pressure for being transferred to workpiece surface reduces, and elastomeric film itself
Shock wave pressure peak also has certain attenuation, and therefore, forming effect slackens significantly.
Invention content
In response to the deficiencies in the existing technology, the present invention provides a kind of impacts of underwater laser without mold progressive molding device
And method, using femtosecond laser breakdown water induction shock wave as power source, using transparent medium to focusing the non-thread of ultrafast laser
Property absorption characteristic, so that water had not only been made restraint layer, but also make absorbed layer, i.e., it is restraint layer is integrated with absorbed layer, realize workpiece it is progressive at
Shape.
The present invention achieves the above technical objects by the following technical means.
A kind of impact of underwater laser is without mold progressive molding device, including computer, laser transmitting system, laser ranging system
System, workpiece carrying system；
The workpiece carrying system includes for accommodating the sink of water, carrying fixture, three-dimensional mobile platform and three-dimensional movement
Platform controller；Workpiece is installed on by carrying fixture in sink, and positioned at the lower section of water layer upper surface, and the sink is installed on
In three-dimensional mobile platform, the three-dimensional mobile platform controller is electrically connected with computer and three-dimensional mobile platform to be pressed with controlling workpiece
According to machining locus on three-dimensional accurate movement；
The laser transmitting system includes optimal control device, femto-second laser, plane mirror, beam splitter and focusing
Lens, the femto-second laser controller are electrically connected with computer and femto-second laser, and the first of the femto-second laser transmitting
Laser beam reflexes to beam splitter through plane mirror, and then focus is located at the positions H after line focus lens, and the positions H are located at workpiece table
The top in face；
The laser ranging system includes Controller for Laser Ranging and laser range finder, the laser range finder and laser
The second laser beam of rangefinder controller and calculating mechatronics, the laser range finder transmitting passes through beam splitter and condenser lens
It is back to laser range finder by original optical path after arrival workpiece surface, computer calculates simultaneously after receiving the signal that laser range finder is fed back
Display condenser lens go out luminous point arrive the positions H distance, and computer control three-dimensional mobile platform movement make focus institute
The positions H be maintained at 1~1.5mm of top of workpiece surface.
Preferably, the distance between water layer upper surface in the upper surface and sink of the workpiece is not less than 5mm.
Preferably, the carrying fixture includes two supporting blocks, and two supporting blocks are equipped with compact heap, and the two of the workpiece
End is respectively placed in two supporting blocks, and is compressed respectively by compact heap.
Preferably, the carrying fixture includes two supporting blocks, and vee-block group is equipped on the opposite side wall of two supporting blocks
Part, the vee-block component include upper holder block and lower lock block, and the upper surface of the lower lock block is equipped with V-shaped groove, the upper holder block
Lower surface be equipped with the matched protrusion of the V-shaped groove, the upper surface of the lower lock block can be close with the lower surface of upper holder block
Fitting, the both ends of the workpiece are respectively placed between the upper holder block and lower lock block of two vee-block components, the upper holder block (801)
It is equipped with threaded hole with the both ends of lower lock block, and is bolted to connection.
Preferably, the workpiece carrying system further includes poly (methyl methacrylate) plate, and the poly (methyl methacrylate) plate both ends are placed in compact heap
On, control the water layer fluctuation above workpiece.
Preferably, the poly (methyl methacrylate) plate is equipped with multiple gas vents.
Preferably, the first laser beam of the femto-second laser transmitting is horizontal direction, the plane mirror and level
The angle in direction is 45 °, and the beam splitter is arranged in the underface of plane mirror, the minute surface and plane reflection of the beam splitter
The minute surface of mirror is mutually perpendicular to, and the condenser lens is horizontally placed at the lower section of beam splitter.
It is a kind of to impact the progressive molding method without mold progressive molding device using underwater laser, include the following steps：
Step 1：It with alcohol or acetone cleaning workpiece surface, degreases and impurity, it is ensured that workpiece enters water rear surface will not
Adsorb bubble；
Step 2：Workpiece both ends are clamped on carrying fixture, ensure that the upper surface of workpiece is horizontally disposed；
Step 3：Inject water into sink, be put into poly (methyl methacrylate) plate, water layer upper surface apart from the upper surface of workpiece at least
5mm；
Step 4：Laser range finder sends out first time testing laser, and Controller for Laser Ranging receives defeated after signal is fed back
Enter computer, computer be calculated and be shown condenser lens go out luminous point to the positions H distance；
Step 5：Computer controls three-dimensional mobile platform and starts, and workpiece is moved to initial manufacture position, it is ensured that laser beam
Focus is located above workpiece surface at 1~1.5mm；
Step 6：Start femto-second laser, carries out the first Secondary Shocks, workpiece is plastically deformed after the completion of impact；
Step 7：Step 4 is repeated to six, three-dimensional mobile platform is controlled by computer and is moved according to the track of setting, warp
After crossing repeat impact, induction workpiece realizes accurately progressive molding.
Beneficial effects of the present invention：
1) present invention can be as short as femtosecond magnitude in time-domain, can focus on micron amount in spatial domain using ultrafast laser
The performance of grade, can effectively improve the precision and controllability of no mold microplasticity progressive molding；
2) it replaces tool heads as power source using ultrafast laser, metal foil progressive molding, the degree of automation may be implemented
It is high；
3) relative to conventional laser impact forging, by keeping the laser beam line focus that femto-second laser is sent out saturating in the present invention
Mirror back focus position is maintained at 1~1.5mm above workpiece surface so that water had not only made absorbed layer but also made restraint layer, saves coating and inhales
The inconvenience of layer and online updating absorbed layer is received, while effectively improving the precision and controllability of no mold microplasticity progressive molding.
Description of the drawings
Fig. 1 is that a kind of underwater laser of the present invention impacts the structural schematic diagram without mold progressive molding device.
Fig. 2 is that femtosecond laser of the present invention impacts progressive molding principle schematic.
Fig. 3 is the structural schematic diagram of carrying fixture of the present invention.
Fig. 4 is the vertical view of vee-block component of the present invention.
Fig. 5 is the experiment effect figure of the specific embodiment of the invention.
In figure：1- femto-second lasers, 2- light pipes, 3- plane mirrors, 4- beam splitters, 5- condenser lenses, 6- Laser Measurings
Distance meter, 7- Controller for Laser Ranging, 8- carry fixture, 801- upper holder blocks, 802- lower lock blocks, 9- three-dimensional mobile platforms, 10- works
Part, 11- sinks, 12- three-dimensional mobile platform controllers, 13- computers, 14- femto-second laser controllers, 15- first laser beams,
16- plasmas, 17- shock waves, 18- poly (methyl methacrylate) plates, 19- second laser beams.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment the present invention is further illustrated, but protection scope of the present invention is simultaneously
It is without being limited thereto.
As shown in Figure 1, a kind of underwater laser impact of the present invention is without mold progressive molding device, including computer
13, laser transmitting system, laser ranging system, workpiece carrying system.
As shown in Figure 1, workpiece carrying system include for accommodate the sink 11 of water, carrying fixture 8, three-dimensional mobile platform 9,
Poly (methyl methacrylate) plate 18 and three-dimensional mobile platform controller 12；Carrying fixture 8 is located in sink 11, including two supporting blocks, two
Supporting block is equipped with compact heap, and the both ends of workpiece 10 are respectively placed in two supporting blocks, and are compressed respectively by compact heap, and
Lower section positioned at water layer upper surface, the distance between the upper surface of workpiece 10 and the water layer upper surface in sink 11 are not less than 5mm.
18 both ends of poly (methyl methacrylate) plate are placed on compact heap, the water layer fluctuation of 10 top of control workpiece.Poly (methyl methacrylate) plate 18 is equipped with multiple
Gas vent.Sink 11 is installed in three-dimensional mobile platform 9, the three-dimensional mobile platform controller 12 and computer 13 and three-dimensional shifting
Moving platform 9 electrical connection with control workpiece 10 according to machining locus the accurate movement on three-dimensional.
Preferably, if Fig. 3 and Fig. 4 carrying fixtures 8 include two supporting blocks, it is all provided on the opposite side wall of two supporting blocks
It includes upper holder block 801 and lower lock block 802 to have vee-block component, the vee-block component, and the upper surface of the lower lock block 802 is equipped with
The lower surface of V-shaped groove, the upper holder block 801 is equipped with and the matched protrusion of the V-shaped groove, the upper table of the lower lock block 802
Face can be fitted closely with the lower surface of upper holder block 801, and the both ends of the workpiece 10 are respectively placed in the upper holder block of two vee-block components
Between 801 and lower lock block 802, the both ends of the upper holder block 801 and lower lock block 802 are equipped with threaded hole, and are bolted
Connection.By two vee-block components, prevent foil from deforming.
The laser transmitting system include optimal control device 14, light pipe 2, femto-second laser 1, plane mirror 3,
Beam splitter 4 and condenser lens 5, the femto-second laser controller 14 are electrically connected with computer 13 and femto-second laser 1, described to fly
The first laser beam 15 that second laser 1 emits is horizontal direction, and the plane mirror 3 and the angle of horizontal direction are 45 °, institute
Beam splitter 4 to be stated to be arranged in the underface of plane mirror 3,4 minute surface of the beam splitter is mutually perpendicular to 3 minute surface of plane mirror,
The condenser lens 5 is horizontally placed at the lower section of beam splitter 4.The first laser beam 15 that the femto-second laser 1 emits passes through leaded light
Cylinder 2 reflexes to beam splitter 4 through plane mirror 3, then after line focus lens 5 focus converge at 10 surface 1 of workpiece~
1.5mm place..
Laser ranging system includes Controller for Laser Ranging 7 and laser range finder 6, the laser range finder 6 and laser
Rangefinder controller 7 and computer 13 are electrically connected, and the laser range finder 6 emits second laser beam 19 by beam splitter 4 and gathers
It is back to laser range finder 6 by original optical path behind 10 surface of the arrival workpiece of focus lens 5, computer 13 receives the feedback of laser range finder 6
Signal after be calculated and be shown condenser lens 5 go out luminous point to the positions H distance, and computer 13 control three-dimensional mobile platform
12 movement is so that focal position is maintained at the 1~1.5mm of top on 10 surface of workpiece.
Underwater laser of the present invention impacts the progressive molding method without mold progressive molding device, including following step
Suddenly：
Step 1：It with 10 surface of alcohol or acetone cleaning workpiece, degreases and impurity, it is ensured that workpiece 10 enters water rear surface
Bubble will not be adsorbed；
Step 2：Workpiece 10 is flattened, both ends are clamped on carrying fixture 8, ensure that the upper surface of workpiece 10 is horizontally disposed；
Step 3：Water is injected into sink 11, is put into poly (methyl methacrylate) plate 18, water layer upper surface is apart from the upper surface of workpiece 10
At least 5mm；
Step 4：Laser range finder 6 sends out first time testing laser, after Controller for Laser Ranging 7 receives signal feedback
Input computer 13, computer 13 be calculated and be shown condenser lens 5 go out luminous point to the positions H distance；
Step 5：Computer 13 controls three-dimensional mobile platform 9 and starts, and workpiece 10 is moved to initial manufacture position, it is ensured that swashs
Light beam focus is located at 10 1~1.5mm of surface of workpiece；
Step 6：Start femto-second laser 1, carries out the first Secondary Shocks, workpiece 10 is plastically deformed after the completion of impact；
Step 7：Step 4 is repeated to six, three-dimensional mobile platform 9 is controlled by computer 13 and is moved according to the track of setting
Dynamic, after repeat impact, induction workpiece 10 realizes accurately progressive molding.
The operation principle of the present invention：As shown in Fig. 2, when femto-second laser 1 sends out first laser beam 15, medium water is by wink
Between puncture, formed high-temperature plasma 16, while to surrounding medium formed ultrahigh peak pressure compression shock wave 17, impacting
Under the action of wave 17, workpiece 10 is plastically deformed.
In the present embodiment, femtosecond laser centre wavelength is 800nm, and ceiling capacity is 500 μ J, and pulsewidth is from 80fs to 800fs
Adjustable, for repetition rate from 1Hz to 1kHz, the spot diameter for the first laser beam 15 that femto-second laser 1 exports is 6mm, is focused saturating
The focal length of mirror 5 is 1000mm, and sample is 20 μ m-thick aluminium foils.Fig. 5 is that 15 line focus of first laser beam that femto-second laser 1 exports is saturating
When the distance between focus and foil surface after mirror 5 are respectively 1mm, 1.5mm, 2mm, 2.5mm, the pit pattern on foil
Figure is corresponding in turn to from top to bottom as defocus 1-2.5mm, it is evident that when defocus 1mm and 1.5mm, pit is more apparent.
The embodiment is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above, not
Away from the present invention substantive content in the case of, those skilled in the art can make it is any it is conspicuously improved, replace
Or modification all belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of underwater laser impact is without mold progressive molding device, which is characterized in that including computer (13), Laser emission system
System, laser ranging system, workpiece carrying system；
The workpiece carrying system includes for accommodating the sink of water (11), carrying fixture (8), three-dimensional mobile platform (9) and three
Tie up mobile platform controller (12)；Workpiece (10) is installed on by carrying fixture (8) in sink (11), and is located at water layer upper surface
Lower section, the sink (11) is installed in three-dimensional mobile platform (9), the three-dimensional mobile platform controller (12) and computer
(13) and three-dimensional mobile platform (9) electrical connection with control workpiece (10) according to machining locus the accurate movement on three-dimensional；
The laser transmitting system includes optimal control device (14), femto-second laser (1), plane mirror (3), beam splitter
(4) it is electrically connected with computer (13) and femto-second laser (1) with condenser lens (5), the femto-second laser controller (14), institute
The first laser beam (15) for stating femto-second laser (1) transmitting reflexes to beam splitter (4), then line focus through plane mirror (3)
Focus is located at the positions H to lens (5) afterwards, and the positions H are located at the top on workpiece (10) surface；
The laser ranging system includes Controller for Laser Ranging (7) and laser range finder (6), the laser range finder (6)
It is electrically connected with Controller for Laser Ranging (7) and computer (13), the second laser beam (19) of laser range finder (6) transmitting
By being back to laser range finder (6) by original optical path after beam splitter (4) and condenser lens (5) arrival workpiece (10) surface, calculate
Machine (13) receive laser range finder (6) feedback signal after be calculated and be shown condenser lens (5) go out luminous point to the positions H away from
From, and the movement of computer (13) control three-dimensional mobile platform (9) is so that the positions H where focus are maintained at workpiece (10) table
At the 1~1.5mm of top in face.
2. underwater laser impact according to claim 1 is without mold progressive molding device, which is characterized in that the workpiece
(10) upper surface is not less than 5mm with the distance between the water layer upper surface in sink (11).
3. underwater laser impact according to claim 1 is without mold progressive molding device, which is characterized in that the carrying folder
It includes two supporting blocks to have (8), and two supporting blocks are equipped with compact heap, and the both ends of the workpiece (10) are respectively placed in two branch
On bracer, and compressed respectively by compact heap.
4. underwater laser impact according to claim 1 is without mold progressive molding device, which is characterized in that the carrying folder
It includes two supporting blocks to have (8), is equipped with vee-block component on the opposite side wall of two supporting blocks, the vee-block component includes upper
Briquetting (801) and lower lock block (802), the upper surface of the lower lock block (802) are equipped with V-shaped groove, under the upper holder block (801)
Surface be equipped with the matched protrusion of the V-shaped groove, the upper surface of the lower lock block (802) can under upper holder block (801)
Surface fits closely, and the both ends of the workpiece (10) are respectively placed in the upper holder block (801) and lower lock block of two vee-block components
(802) between, the both ends of the upper holder block (801) and lower lock block (802) are equipped with threaded hole, and are bolted to connection.
5. underwater laser impact according to claim 3 is without mold progressive molding device, which is characterized in that the workpiece is held
Loading system further includes poly (methyl methacrylate) plate (18), and poly (methyl methacrylate) plate (18) both ends are placed on compact heap, on control workpiece (10)
The water layer fluctuation of side.
6. underwater laser impact according to claim 5 is without mold progressive molding device, which is characterized in that organic glass
Glass plate (18) is equipped with multiple gas vents.
7. underwater laser impact according to claim 1 is without mold progressive molding device, which is characterized in that the femtosecond swashs
The first laser beam (15) of light device (1) transmitting is horizontal direction, and the plane mirror (3) and the angle of horizontal direction are 45 °,
Beam splitter (4) setting is in the underface of plane mirror (3), minute surface and the plane mirror (3) of the beam splitter (4)
Minute surface is mutually perpendicular to, and the condenser lens (5) is horizontally placed at the lower section of beam splitter (4).
8. a kind of underwater laser using described in claim 1~7 any one is impacted without the progressive of mold progressive molding device
Manufacturing process, which is characterized in that include the following steps：
Step 1：It with alcohol or acetone cleaning workpiece (10) surface, degreases and impurity, it is ensured that workpiece (10) enters water rear surface
Bubble will not be adsorbed；
Step 2：Workpiece (10) both ends are clamped on carrying fixture (8), ensure that the upper surface of workpiece (10) is horizontally disposed；
Step 3：To water is injected in sink (11), it is put into poly (methyl methacrylate) plate (18), upper table of the water layer upper surface apart from workpiece (10)
Face at least 5mm；
Step 4：Laser range finder (6) sends out first time testing laser, after Controller for Laser Ranging (7) receives signal feedback
Input computer (13), computer (13) be calculated and be shown condenser lens (5) go out luminous point to the positions H distance；
Step 5：Computer (13) controls three-dimensional mobile platform (9) and starts, and workpiece (10) is moved to initial manufacture position, it is ensured that
Laser beam focal is located at workpiece (10) 1~1.5mm of surface；
Step 6：Start femto-second laser (1), carries out the first Secondary Shocks, workpiece (10) is plastically deformed after the completion of impact；
Step 7：Step 4 is repeated to six, three-dimensional mobile platform (9) is controlled by computer (13) and is moved according to the track of setting
Dynamic, after repeat impact, induction workpiece (10) realizes accurately progressive molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810331740.1A CN108655569B (en) | 2018-04-13 | 2018-04-13 | Underwater laser impact die-free incremental forming device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810331740.1A CN108655569B (en) | 2018-04-13 | 2018-04-13 | Underwater laser impact die-free incremental forming device and method |
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| Publication Number | Publication Date |
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| CN108655569A true CN108655569A (en) | 2018-10-16 |
| CN108655569B CN108655569B (en) | 2020-06-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482750A (en) * | 2018-12-24 | 2019-03-19 | 广东工业大学 | A kind of micro- riveting set of no rivet |
| CN109604416A (en) * | 2018-12-14 | 2019-04-12 | 安徽工业大学 | A kind of metal blank shock wave manufacturing process and device |
| CN110614429A (en) * | 2019-08-23 | 2019-12-27 | 江苏大学 | Laser-induced cavitation forming device and method |
| CN113584297A (en) * | 2021-07-30 | 2021-11-02 | 山东大学 | Method for improving underwater femtosecond laser shock processing strength |
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| CN109604416A (en) * | 2018-12-14 | 2019-04-12 | 安徽工业大学 | A kind of metal blank shock wave manufacturing process and device |
| CN109482750A (en) * | 2018-12-24 | 2019-03-19 | 广东工业大学 | A kind of micro- riveting set of no rivet |
| CN110614429A (en) * | 2019-08-23 | 2019-12-27 | 江苏大学 | Laser-induced cavitation forming device and method |
| CN110614429B (en) * | 2019-08-23 | 2021-09-10 | 江苏大学 | Laser-induced cavitation forming device and method |
| CN113584297A (en) * | 2021-07-30 | 2021-11-02 | 山东大学 | Method for improving underwater femtosecond laser shock processing strength |
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