CN102465195A - Light-water coaxial laser shock peening head - Google Patents
Light-water coaxial laser shock peening head Download PDFInfo
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- CN102465195A CN102465195A CN2010105455363A CN201010545536A CN102465195A CN 102465195 A CN102465195 A CN 102465195A CN 2010105455363 A CN2010105455363 A CN 2010105455363A CN 201010545536 A CN201010545536 A CN 201010545536A CN 102465195 A CN102465195 A CN 102465195A
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Abstract
The invention belongs to the field of laser shock reinforcement and specifically, relates to a light-water coaxial laser shock peening head. The light-water coaxial laser shock peening head comprises a water nozzle module and a focusing module. One end of the focusing module is connected to a parent module of a laser shock peening system. The other end of the focusing module is connected to one end of the water nozzle module. A water column is ejected from the other end of the water nozzle module. The distance between a focal plane of a focusing mirror and a water nozzle outlet can be adjusted by the focusing module so that the adjustment on water column length is realized to satisfy different technological requirements. The light-water coaxial laser shock peening head has the advantages that 1,through a light-water coaxial mode, parameter fluctuation caused by the existing water restraint layer application mode is reduced, and processing stability and flexibility are improved; 2, through total reflection of a light beam emitted into air from a water surface, constraint and shaping of a laser beam are realized; 3, through water kinetic energy, a constraint effect of a water restraint layer is enhanced; and 4, through the advantages of 1 to 3, laser shock peening effects are improved, and automatic and industrialized production difficulty is reduced.
Description
Technical field
The invention belongs to laser impact intensified field, the co-axial laser impact intensified head of specifically a kind of smooth water.
Background technology
(Laser Shock Peening is to utilize high-energy-density (GW/cm LSP) to reiforcing laser impact technology
2Magnitude), short pulse (ns) pulse laser impact material produces the intensive laser induced plasma at material surface.The GPa level shockwave that its explosion produces acts on material surface and to internal communication, makes in the certain zone of material surface and produce viscous deformation and complicated dislocation structure, forms very big residual compressive stress, improves the fatigue strength and the resistance to corrosion of part.This technology has been widely used in all trades and professions such as mechanical manufacturing engineering, aerospace, microelectronics, national defence, medical treatment at present.
In laser impact intensified process, in order to suppress freely spreading of plasma body, obtain more concentratedly, the shockwave of longer action time usually can add one deck restraint layer in the laser processing zone.Constrained layer material commonly used has quartz, glass, flexible membrane and water etc.; Wherein water because cost low, flexible good, can not be because of cracked generation residue, advantages such as the piece surface flexibility of complicated shape is strong have been obtained using the most widely; But it has a main shortcoming is the insufficient rigidity of water layer, is difficult to the restraint force that provides powerful.
The implementation of existing water constraint layer mainly contains two kinds, and a kind of is that part is placed in the water tank, processes under water; Another kind is to form the mobile water curtain that thickness is about 2-3mm through external water spouting nozzle at piece surface.This dual mode respectively has characteristics, and preceding a kind of mode can obtain comparatively smooth restraint layer interface, and the course of processing is more stable; But system of processing underaction; Work range has received the restriction of water tank size, and needs to wait for that the water surface calms down after each the impact, and working (machining) efficiency is lower.Then a kind of mode is simple, handiness is high; But water layer thickness is wayward, and water curtain is offset to laser beam one side, and its drop point needs certain distance apart from laser beam; Therefore when handling the part of some shape, possibly be difficult to reach the best fit point of laser beam and water curtain.In addition, above-mentioned two kinds of water constraint layers are under the HI high impact frequency, and water layer splashes easily, and the globule and water smoke in the light path form scattering to laser, may be attached on the optical mirror slip when serious, damage optical mirror slip.
Say from the optical angle that in addition normally through defocusing amount estimation spot size, error is bigger for existing shock peening equipment; And usually light beam being lacked constraint, regular meeting causes the laser power profile of finished surface to change, and influences the stability of technology.If the homogeneity that guaranteed power distributes then need be added the beam shaping equipment of more complicated, and this equipment all is very expensive usually.
Summary of the invention
In order to solve the problems referred to above that existing shock peening equipment exists, the object of the present invention is to provide the co-axial laser impact intensified head of a kind of smooth water.
The objective of the invention is to realize through following technical scheme:
The present invention includes water spouting nozzle module and focusing module, wherein an end of focusing module links to each other with laser impact intensified system upper level module, and the other end of focusing module is connected with an end of water spouting nozzle module, and water column is flowed out by the other end of water spouting nozzle module; Said focusing module comprises knob, shell, chock, rotation nut, focuses on microscope base and condensing lens; Shell links to each other, forms the inner hollow structure with chock; The rotation nut is installed in rotation in the internal space that shell and chock connect into; Said focusing microscope base can move back and forth up and down to be connected in the rotation nut, on the focusing microscope base, is provided with condensing lens; Said knob be positioned at shell the outside, through transmission rig with the rotation nut link to each other; Said water spouting nozzle module comprises down protection microscope base, water spouting nozzle, protects eyeglass and water inlet pipe down; Protect an end of microscope base to link to each other with chock in the focusing module down, the other end is provided with down the protection eyeglass, and water spouting nozzle is threaded with protecting microscope base down; Inwall and following protection the at water spouting nozzle form the water cavity of separating with optical cavity between the microscope base the other end; The sidewall of water spouting nozzle is provided with water inlet pipe, and the bottom has outlet, and is coaxial with light beam by the water column of outlet ejection.
Wherein: an end of said shell is connected with water-cooled seat, orienting lug in turn and goes up joint flange, and the other end of shell is connected with an end of chock, and the other end of chock links to each other with the water spouting nozzle module; Said rotation nut is that hollow structure, one of which end are installed in rotation in the chock through bearing, and the inside of the other end is connected with the threaded one end that focuses on microscope base, focuses on the other end and the orienting lug butt of microscope base; Outside surface at the water-cooled seat is provided with 1～4 water-cooled piece; All have keyway on said orienting lug and the focusing microscope base, be provided with restriction in the keyway and focus on the flat key that microscope base rotates; Said going up is provided with the protection eyeglass in the joint flange.
Said transmission rig comprises first gear, second gear, gear shaft and gear shaft block, and wherein gear shaft block is installed on the shell, and an end of gear shaft is provided with knob, and the other end passes gear shaft block, is connected with second gear; Said first gear is installed on the rotation nut, is meshed with second gear; The said gear shaft and second gear radially move back and forth along shell, on the sidewall of shell, have the hole that supplies second gear to move through; Said second gear is provided with spring pressuring plate, between spring pressuring plate and gear shaft block, is provided with spring.
The said eyeglass of protection down is installed in down the other end of protecting microscope base through following protective glass pressure ring, and optical cavity and water cavity are through following protective glass pressure ring and protect eyeglass to separate down; The junction of said protection microscope base down and water spouting nozzle is through the seam location; Reach to protect between microscope base and the water spouting nozzle down between said condensing lens and the focusing microscope base and be respectively equipped with sealing-ring.
Advantage of the present invention and positively effect are:
1. the present invention adopts the co-axial mode of light water, and the plasma body that produces in the impact strengthening process retrains, and processes more flexibly, and flexibility is stronger.
2. the present invention can regulate to the distance between the water spouting nozzle outlet the condensing lens focal plane through focusing module, and then the different processes demand is mated in the adjusting of realization water column length.
3. the present invention can utilize the total reflection constraint and the shaping laser beam of water column through the fluidised form and the focal position of adjustment water.
4. the present invention can utilize the binding effect of the kinetic energy raising article on plasma body of current, improves the efficient of laser-impact.
Description of drawings
Fig. 1 is an external structure synoptic diagram of the present invention;
Fig. 2 is an internal structure sectional view of the present invention;
Fig. 3 is the structural representation of water spouting nozzle module of the present invention;
Fig. 4 is the structural representation of focusing module of the present invention;
Fig. 5 is one of synoptic diagram of total reflection light beam of the present invention shaping;
Fig. 6 is two of the synoptic diagram of total reflection light beam of the present invention shaping;
Fig. 7 is the partial enlarged drawing of Fig. 6;
Wherein: 1 is last joint flange, and 2 is orienting lug, and 3 is the water-cooled seat, and 4 is the water-cooled piece, and 5 is knob, and 6 is shell, and 7 is chock; 8 are following joint flange, and 9 are protection microscope base down, and 10 is water spouting nozzle, and 11 is water inlet pipe, and 12 is threaded pressure ring, and 13 is last protection eyeglass, and 14 is sealing-ring; 15 are the rotation nut, and 16 for focusing on microscope base, and 17 is first gear, and 18 is female for the gear back of the body, and 19 be needle bearing, 20 be under the protective glass pressure ring; 21 for protecting eyeglass down, and 22 are outlet, and 23 is second gear, and 24 is gear shaft block, and 25 is gear shaft, and 26 is spring; 27 is spring pressuring plate, and 28 is the condensing lens threaded pressure ring, and 29 is trim ring, and 30 is condensing lens, and 31 is flat key, and 32 is water column.
Embodiment
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Like Fig. 1, shown in Figure 2; The present invention includes joint flange 1, orienting lug 2, water-cooled seat 3, focusing module, following joint flange 8 and water spouting nozzle module; Focusing module comprises shell 6, chock 7, rotation nut 15, focuses on microscope base 16, condensing lens 30, trim ring 29, condensing lens threaded pressure ring 28, knob 5 and transmission rig, the water spouting nozzle module comprise down protection microscope base 9, water spouting nozzle 10, down protective glass pressure ring 20, protect eyeglass 21 and water inlet pipe 11 down.Wherein go up joint flange 1, orienting lug 2, water-cooled seat 3, shell 6, chock 7, following joint flange 8, protect microscope base 9 to link to each other, also use the location of pinning through screw successively down, form the inner hollow structure, water spouting nozzle 10 is threaded with the following microscope base 9 of protecting; One end and the orienting lug of last joint flange 1 are affixed; The other end links to each other with laser impact intensified system upper level module; On the inwall of last joint flange 1, be shaped on IT; And on stop portion is equipped with, protect eyeglass 13, protection eyeglass 13 is fixing through the threaded pressure ring 12 that is threaded with last joint flange 1 on this, is sealed by sealing-ring 14 between threaded pressure ring 12 and the last protection eyeglass 13.The below of water spouting nozzle 10 is a processing plane.
As shown in Figure 3, an end of following protection microscope base 9 links to each other with chock 7 in the focusing module through joint flange 8 down, and the other end is equipped with down protection eyeglass 21 through protective glass pressure ring 20 down, and following protective glass pressure ring 20 and following the protection between the eyeglass 21 are provided with sealing-ring 14.Protect the other end of microscope base 9 to insert in the water spouting nozzle 10, be threaded with water spouting nozzle 10 down, the junction guarantees centering precision through the seam location, and under protect between microscope base 9 and the water spouting nozzle 10 and seal with sealing-ring 14.Forming water cavity at the inwall of water spouting nozzle 10 and under the other end of protection microscope base 9 reaches down between the protective glass pressure ring, is optical cavity on the following protection eyeglass 21, and water cavity and optical cavity are through protective glass pressure ring 20 and sealing-ring 14 are separated down.The sidewall of water spouting nozzle 10 is provided with water inlet pipe 11, and the bottom has outlet 22, and deionized water gets into water cavity by water inlet pipe 11; Spray along light beam from exporting 22 then; Flow velocity and fluidised form can be regulated through regulating flooding velocity and pressure, guarantee the smooth and easy of water flows, do not have turbulent flow; By the water column 32 of outlet 22 ejections and the light shaft coaxle of light beam.
As shown in Figure 4; Shell 6 and chock 7 connect into the housing of focusing module; Rotation nut 15 is installed in rotation in the internal space that shell 6 and chock 7 connect into through needle bearing 19 for hollow structure, one of which end, and needle bearing 19 can guarantee to rotate the concentricity and the smooth and easy degree of nut 15; The other end of rotation nut 15 is provided with the water-cooled seat 3 that links to each other with shell 6, and the outside surface of water-cooled seat 3 is equipped with 1～4 separate water-cooled piece 4, and guaranteeing to strengthen head can process continuously.Focus on the inside that microscope base 16 is threaded in the rotation nut the other end; The lower end that focuses on microscope base 16 is provided with condensing lens 30; The below of condensing lens 30 is provided with trim ring 29, and condensing lens 30 and trim ring 29 are fixing through the condensing lens threaded pressure ring 28 that is threaded with focusing microscope base 16 lower ends; Between condensing lens 30 and focusing microscope base 16, be provided with sealing-ring 14.The upper end outside surface of condensing lens 30 is provided with orienting lug 2, all has keyway on orienting lug 2 and the focusing microscope base 16, is provided with restriction in the keyway and focuses on the flat key 31 that microscope base 16 rotates.In 15 rotations of rotation nut, focusing on microscope base 16 can be along orienting lug 2 oscilaltion, and orienting lug 2 can guarantee to rotate nut 15 right alignment when rotated.Knob 5 is positioned at the outside of shell 6, links to each other with rotation nut 15 through transmission rig, and makes 15 rotations of rotation nut.Transmission rig comprises female 18, second gear 23 of first gear 17, the gear back of the body, gear shaft 25, gear shaft block 24, spring 26 and spring pressuring plate 27; First gear 17 is fixed on the top that rotates on the nut 15, is positioned at needle bearing 19 through the screw thread pair and the gear back of the body female 18; Have the hole on the sidewall of shell 6; Gear shaft block 24 is fixed on the outside surface of shell 6, with the sealing of said hole; One end of gear shaft 25 is provided with knob 5, and the other end is passed, linked to each other with second gear 23 by gear shaft block 24, and second gear 23 is meshed with first gear 17.The gear shaft 25 and second gear 23 can be along radially the moving back and forth of shell 6, and second gear 23 is provided with spring pressuring plate 27, between spring pressuring plate 27 and gear shaft block 24, is provided with the spring 26 that gear shaft 25 is resetted.
Principle of work of the present invention is:
Shown in Fig. 2 and Fig. 5～7, deionized water gets into water cavity by water inlet pipe 11, and is sprayed by the outlet of water spouting nozzle 10 bottoms; Laser beam is radiated on the condensing lens 30 through last protection eyeglass 13, and light beam is through after the focusing of condensing lens 30, segment beam through under protect eyeglass 21 to be mapped on the water column 32, then be limited in the zone of water column constraint through total reflection.When arts demand water column diameter in 0.5～1.5mm, water column length (distance of processing plane between the water spouting nozzle lower surface) when being 15～20mm, laser can be realized multiple reflection in water column, and then realizes equal and the control of spot size of light beam.For adapting to concrete technology; Can be through regulating the condensing lens focal plane to the distance between the water spouting nozzle outlet; And then regulate suitable water column length; Guarantee that processing can carry out in the best position of streamflow regime, be specially: along shell 6 radially inwardly promote knob 5 and gear shaft 25, second gear 23 and first gear 17 are meshed; Turning knob 5 drives second gear 23 through gear shaft 25 and rotates, and then first gear, 17 driven rotary nuts 15 are rotated; Since the restriction of flat key 31, the focusing microscope base 16 that is threaded with rotation nut 15 oscilaltion in 15 rotations of rotation nut, and the focal plane of adjustment condensing lens 30 is to the distance between the outlet of water spouting nozzle 10.After choosing, the knob 5 and unclamping of stopping operating is through the elastic reset of spring 26.
The outlet of water spouting nozzle can be made different caliber, to adapt to the needs of different process.
The present invention reduces existing water constraint layer through the co-axial mode of light water and applies the parameter fluctuation that mode causes, improves the stability and the handiness of processing.Simultaneously, utilize the total reflection of light beam when the water surface is injected air to realize the constraint and the shaping of laser beam.At last, utilize the binding effect of the kinetic energy reinforcement water constraint layer of water.Improve laser impact intensified effect through above-mentioned three aspects, reduce the difficulty that it implements robotization, batch production production.
Claims (10)
1. co-axial laser impact intensified head of light water; It is characterized in that: comprise water spouting nozzle module and focusing module; Wherein an end of focusing module links to each other with laser impact intensified system upper level module; The other end of focusing module is connected with an end of water spouting nozzle module, and water column (32) is flowed out by the other end of water spouting nozzle module; Said focusing module comprises knob (5), shell (6), chock (7), rotation nut (15), focuses on microscope base (16) and condensing lens (30); Shell (6) links to each other, forms the inner hollow structure with chock (7); Rotation nut (15) is installed in rotation in the internal space that shell (6) and chock (7) connect into; Said focusing microscope base (16) can move back and forth up and down to be connected in the rotation nut (15), on focusing microscope base (16), is provided with condensing lens (30); Said knob (5) be positioned at shell (6) the outside, through transmission rig with rotate nut (15) and link to each other; Said water spouting nozzle module comprises down protection microscope base (9), water spouting nozzle (10), protects eyeglass (21) and water inlet pipe (11) down; Protect an end of microscope base (9) to link to each other down with chock (7) in the focusing module; The other end is provided with down protection eyeglass (21); Water spouting nozzle (10) is threaded with protecting microscope base (9) down, and at the inwall and the following water cavity that forms between microscope base (9) the other end with the optical cavity separation of protecting of water spouting nozzle (10), the sidewall of water spouting nozzle (10) is provided with water inlet pipe (11); The bottom has outlet (22), and is coaxial with light beam by the water column (32) of outlet (22) ejection.
2. by the co-axial laser impact intensified head of the said smooth water of claim 1; It is characterized in that: an end of said shell (6) is connected with water-cooled seat (3), orienting lug (2) in turn and goes up joint flange (1); The other end of shell (6) is connected with an end of chock (7), and the other end of chock (7) links to each other with the water spouting nozzle module; Said rotation nut (15) is that hollow structure, one of which end are installed in rotation in the chock (7) through bearing, and the inside of the other end is connected with the threaded one end that focuses on microscope base (16), focuses on the other end and orienting lug (2) butt of microscope base (16).
3. by the co-axial laser impact intensified head of the said smooth water of claim 2, it is characterized in that: the outside surface of said water-cooled seat (3) is provided with 1～4 water-cooled piece (4).
4. by the co-axial laser impact intensified head of the said smooth water of claim 2, it is characterized in that: all have keyway on said orienting lug (2) and the focusing microscope base (16), be provided with restriction in the keyway and focus on the flat key (31) that microscope base (16) rotates.
5. by the co-axial laser impact intensified head of the said smooth water of claim 2, it is characterized in that: said going up is provided with protection eyeglass (13) in the joint flange (1).
6. by the co-axial laser impact intensified head of the said smooth water of claim 1; It is characterized in that: said transmission rig comprises first gear (17), second gear (23), gear shaft (25) and gear shaft block (24); Wherein gear shaft block (24) is installed on the shell (6); One end of gear shaft (25) is provided with knob (5), and the other end passes gear shaft block (24), is connected with second gear (23); Said first gear (17) is installed in rotation nut (15) and goes up, is meshed with second gear (23).
7. by the co-axial laser impact intensified head of the said smooth water of claim 6; It is characterized in that: said gear shaft (25) and second gear (23) radially move back and forth along shell (6), on the sidewall of shell (6), have the hole that supplies second gear (23) to move through; Said second gear (23) is provided with spring pressuring plate (27), between spring pressuring plate (27) and gear shaft block (24), is provided with spring (26).
8. by the co-axial laser impact intensified head of the said smooth water of claim 1; It is characterized in that: said down protection eyeglass (21) is installed in down the other end of protection microscope base (9) through protective glass pressure ring (20) down, optical cavity and water cavity through under protective glass pressure ring (20) protect eyeglass (21) to separate under reaching.
9. by the co-axial laser impact intensified head of the said smooth water of claim 1, it is characterized in that: said protection microscope base (9) down passes through the seam location with the junction of water spouting nozzle (10).
10. by the co-axial laser impact intensified head of the said smooth water of claim 1, it is characterized in that: be respectively equipped with sealing-ring (14) between protection microscope base (9) and the water spouting nozzle (10) under reaching between said condensing lens (30) and the focusing microscope base (16).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010545536 CN102465195B (en) | 2010-11-16 | 2010-11-16 | Light-water coaxial laser shock reinforcing head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010545536 CN102465195B (en) | 2010-11-16 | 2010-11-16 | Light-water coaxial laser shock reinforcing head |
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| CN102465195A true CN102465195A (en) | 2012-05-23 |
| CN102465195B CN102465195B (en) | 2013-07-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484654A (en) * | 2013-09-22 | 2014-01-01 | 北京航空航天大学 | Light-water coaxial laser shock strengthening spray head |
| WO2018120359A1 (en) * | 2016-12-30 | 2018-07-05 | 宁波大艾激光科技有限公司 | Method and device for follow-up-type laser shock peening treatment |
| CN108588712A (en) * | 2018-08-14 | 2018-09-28 | 辽宁增材制造产业技术研究院有限公司 | A kind of accurate Z axis regulating mechanism of laser head |
| CN111826514A (en) * | 2019-04-22 | 2020-10-27 | 中国科学院沈阳自动化研究所 | Light-water coaxial laser shock peening device |
| CN112518145A (en) * | 2020-12-16 | 2021-03-19 | 普适激光技术(苏州)有限公司 | Novel optical fiber laser cutting head |
| CN113359371A (en) * | 2021-05-31 | 2021-09-07 | 吉林大学 | Resettable locking device suitable for space camera focusing mechanism |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484654A (en) * | 2013-09-22 | 2014-01-01 | 北京航空航天大学 | Light-water coaxial laser shock strengthening spray head |
| WO2018120359A1 (en) * | 2016-12-30 | 2018-07-05 | 宁波大艾激光科技有限公司 | Method and device for follow-up-type laser shock peening treatment |
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| CN108588712A (en) * | 2018-08-14 | 2018-09-28 | 辽宁增材制造产业技术研究院有限公司 | A kind of accurate Z axis regulating mechanism of laser head |
| CN111826514A (en) * | 2019-04-22 | 2020-10-27 | 中国科学院沈阳自动化研究所 | Light-water coaxial laser shock peening device |
| CN111826514B (en) * | 2019-04-22 | 2022-02-11 | 中国科学院沈阳自动化研究所 | Light-water coaxial laser shock peening device |
| CN112518145A (en) * | 2020-12-16 | 2021-03-19 | 普适激光技术(苏州)有限公司 | Novel optical fiber laser cutting head |
| CN113359371A (en) * | 2021-05-31 | 2021-09-07 | 吉林大学 | Resettable locking device suitable for space camera focusing mechanism |
| CN113359371B (en) * | 2021-05-31 | 2023-04-07 | 吉林大学 | Resettable locking device suitable for space camera focusing mechanism |
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