CN103898281B - Blisk covers the laser impact intensified laser head in position - Google Patents
Blisk covers the laser impact intensified laser head in position Download PDFInfo
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- CN103898281B CN103898281B CN201210568009.3A CN201210568009A CN103898281B CN 103898281 B CN103898281 B CN 103898281B CN 201210568009 A CN201210568009 A CN 201210568009A CN 103898281 B CN103898281 B CN 103898281B
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Abstract
The invention discloses a kind of blisk and cover the laser impact intensified laser head in position, belong to the laser impact intensified process field of aircraft engine blisk, this laser head comprises numerical control rotating platform, swing arm, laser head end, large condensing lens, little condensing lens, small reflector and small reflector microscope base; One end of swing arm is fixedly mounted on numerical control rotating platform; The other end of swing arm is connected with laser head end, and small reflector microscope base is fixed on the end of laser head end, and small reflector is embedded in the groove of small reflector microscope base, and little condensing lens is fixed on the light-emitting window place of laser head end.When there being beam diameter < 27mm, wavelength is 1064nm, the laser beam of angle of divergence < 3mrad enters laser head and forms circular light spot at blade surface, thus it is laser impact intensified to realize covering position to blisk.The present invention makes position blisk of engine being difficult to process and can not process become and can process, and ensure that homogeneity and the stability of laser impact intensified quality.
Description
Technical field
The invention belongs to aircraft engine integrated impeller blade intensive treatment field, specifically a kind of blisk for aircraft engine covers the laser impact intensified laser head in position.
Background technology
Blisk is designed to a part blade and wheel disc, replaces usual blade tenon tooth and wheel disc chase mortise to add the syndeton of locking plate again, improves the pneumatic efficiency of engine, has an high regard for when reliability.Traditional intensifying technology of individual blade is shot peening strengthening, and shot peening strengthening effects on surface irregular component performance difficulty, easily causes the distortion of thin-wall part, and effects on surface roughness and size may have an impact.The laser impact intensified deficiency that can overcome shot peening strengthening, is particularly useful for the blisk of structural shape complexity.
Reiforcing laser impact technology is the plasma shockwave utilizing intense laser beam to produce, and improves the antifatigue of metallic substance, a kind of new and high technology of wear-resistant and resistance to corrosion.Due to it with existing cold extrusion, shot-peening etc. metal material surface strengthen compared with means, the outstanding advantages such as have noncontact, strong and strengthening effect is remarkable without heat affected zone, controllability, just obtains from produce and pays close attention to widely and study.
But, what require along with aero-engine performance improves constantly, also more harsh to the structural requirement of aircraft engine blisk, in order to raise the efficiency further and thrust-weight ratio, leaf curling is increasing, blade is more and more intensive, three grades of leaf dishes of 1m are about for diameter, lobe numbers reaches more than 40, thus make laser beam cannot enter interlobate small space, making to cover position cannot carry out laser impact intensified, for the laser impact intensified Problems existing of current blisk, the aircraft engine blisk of the present invention's exploitation covers the laser impact intensified laser head in position, solve aircraft engine blisk and cover the problem that position cannot process, the laser impact intensified efficiency of aircraft engine blisk and the anti-fatigue performance of aircraft engine blisk can be increased substantially.
Summary of the invention
The object of the present invention is to provide the laser impact intensified laser head of a kind of blisk.What laser beam can be introduced aircraft engine blisk by this aircraft engine blisk laser impact intensified laser head effectively covers position, solution aircraft engine blisk covers the problem that position cannot process, the performance index such as the antifatigue of raising aircraft engine leaf dish and stress corrosion resistant.
The object of the invention is to be achieved through the following technical solutions:
A kind of blisk covers the laser impact intensified laser head in position, and this laser head comprises numerical control rotating platform, swing arm, laser head end, large condensing lens, little condensing lens, small reflector and small reflector microscope base; Wherein: numerical control rotating platform and large condensing lens are arranged on optical table respectively by screw and mirror holder, one end of swing arm is fixedly mounted on numerical control rotating platform; The other end of swing arm is connected with laser head end, small reflector microscope base is fixed on the end of laser head end, small reflector is embedded in the groove of small reflector microscope base, and the end sides of laser head end arranges light-emitting window, and little condensing lens is fixed on the light-emitting window place of laser head end; The position that small reflector microscope base and light-emitting window are arranged makes to be irradiated to incident light on small reflector and between the reflected light reflected by small reflector, angle is 30-34 °.
Described swing arm is made up of web plate, pipe connecting and light pipe; Wherein: fixed by screw between web plate and numerical control rotating platform; Located by the shaft shoulder between web plate and pipe connecting, and fixed by locking screw; Located by the shaft shoulder between light pipe and pipe connecting, and fixed by locking screw.
Described web plate and numerical control rotating platform pad one deck rubber cushion in-between before fixing and ensure swing arm level; Before described light pipe is connected with pipe connecting, in pipe connecting, rotate light pipe, for adjusting the direction of the light-emitting window place Output of laser of laser head end, and then tighten screw and be fixed.
Located by the shaft shoulder between the light pipe of described swing arm and laser head end, and fastening by lock screw A.
Numerical control rotating platform is provided with balancing weight by screw, and for the weight of balance oscillating arm, swing arm, laser head end and small reflector microscope base all adopt aluminum alloy materials, and balancing weight adopts stainless material.
Described small reflector microscope base is fixed on the end of laser head end by the screw with flat head of M3; Wherein: small reflector microscope base adopts counter sink structure design; Before tightening screw with flat head, at screw thread place, the bonding surface place of the end of small reflector microscope base and laser head end is coated with one deck ultra-violet curing glue, after tightening screw, puts into ultra-violet curing case and solidifies 30s, seal bonding surface.
Described small reflector plating highly reflecting films, reflectance coating R > 99.81064nm, reflectance coating damage threshold is pulse 25J/cm
2, 10ns, 2Hz; Input angle is α=16 ± 2 °, and wavelength 532nm and 1064nm laser 16 ± 2 ° of corner reflection rates thereon reach more than 99.5%.
Described little condensing lens is fixed on the light-emitting window place of the end of laser head by lock screw B, adopt the mode of shaft shoulder location to position; Wherein: before tightening lock screw B, at lock screw B screw thread place, the bonding surface place at little condensing lens edge and laser head end light-emitting window place is coated with one deck ultra-violet curing glue, after tightening lock screw B, put into ultra-violet curing case and solidify 30s, bonding surface is sealed.
The lens damage threshold value of described little condensing lens: pulse 25J/cm
2, 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon reach more than 99.5%.
4 dimension adjustment mechanisms are all adopted, the lens damage threshold value of large condensing lens: pulse 25J/cm for its regulating mechanism of mirror holder be fixed on by large condensing lens on optical table
2, 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon reach more than 99.5%.
Above-mentioned laser head in use, first makes numerical control rotating platform rotary work by the mode of automatic control or Non-follow control, swing arm and laser head end is entered working position, namely allows laser head enter working position.When there being beam diameter < 27mm, wavelength is 1064nm, it is 50mm that the laser beam of angle of divergence < 3mrad impinges perpendicularly on diameter, when focal length is on the large condensing lens of 1300mm, large condensing lens focuses of the light beam on the small reflector that size is 10mm × 9mm × 2mm, by the reflection of small reflector, laser beam being entered diameter is 10mm, focal length is in the little condensing lens of 10mm, by little condensing lens, light beam is focused on blade surface, blade pitch eyeglass outside surface is 2mm, form diameter at blade surface and be about 3mm, the circular light spot of flat-top distribution.Thus realize covering the laser impact intensified of position to blisk.
Advantage of the present invention and positively effect are:
1. the present invention can be covered position to aircraft engine blisk and carried out laser impact intensified, solves aircraft engine blisk and covers the difficult problem that position can not be processed.
2. compact structure of the present invention, safe and reliable, and Working position is easy to adjust.
3. the laser beam homogeneous of the present invention's output, ensure that the evenly reliable of processing quality.
4. the present invention is easy to use, working (machining) efficiency is high.
Accompanying drawing explanation
Fig. 1 is the light path system of installation laser head of the present invention;
Fig. 2 is the laser head be installed in equipment of the present invention;
Fig. 3 is light path schematic diagram of the present invention;
Fig. 4 is laser head end structure;
Fig. 5 is small reflector microscope base.
Wherein: 1 is laser apparatus, 2 is optical table, and 3 is light pipe, 4 is large condensing lens, and 5 is numerical control rotating platform, and 6 is swing arm, 7 is laser head end, and 8 is light pipe, and 9 is pipe connecting, 10 is web plate, and 11 is balancing weight, and 12 is little condensing lens, 13 is lock screw B, and 14 is small reflector, and 15 is screw with flat head, 16 is lock screw A, and 17 is small reflector microscope base, and 18 is light-emitting window.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Blisk of the present invention covers the laser impact intensified laser head structure in position as Figure 1-5, and this laser head comprises numerical control rotating platform 5, swing arm 6, laser head end 7, large condensing lens 4, little condensing lens 12, small reflector 14 and small reflector microscope base 17; Wherein: numerical control rotating platform 5 and large condensing lens 4 are arranged on optical table 2 respectively by screw and mirror holder, one end of swing arm 6 is fixedly mounted on numerical control rotating platform 5, and manually or automatically mode can make swing arm 6 enter working position and leave working position; The other end of swing arm 6 is connected with laser head end 7, small reflector microscope base 17 is fixed on the end of laser head end 7, small reflector 14 is embedded in the groove of small reflector microscope base 17, the end sides of laser head end 7 is arranged light-emitting window 18, little condensing lens 12 is fixed on light-emitting window 18 place of laser head end 7; The position that small reflector microscope base 17 and light-emitting window 18 are arranged makes to be irradiated to incident light on small reflector 14 and between the reflected light reflected by small reflector 14, angle is 30-34 °.
Described swing arm 6 is made up of web plate 10, pipe connecting 9 and light pipe 8; Wherein: fixed by screw between web plate 10 and numerical control rotating platform 5, swing arm level is ensured by padding one deck rubber cushion between web plate 10 and numerical control rotating platform 5; Located by the shaft shoulder between web plate 10 and pipe connecting 9, and fixed by locking screw; Located by the shaft shoulder between light pipe 8 and pipe connecting 9, and fixed by locking screw; Before light pipe 8 is connected with pipe connecting 9, light pipe 8 can be rotated in advance in pipe connecting 9, the direction of adjustment laser head end 7 Output of laser is be used for ensureing that laser level direction, light-emitting window place exports by rotating light pipe 8 in the present invention, and then tightens screw and be fixed and prevent from rotating.
Located by the shaft shoulder between the light pipe 8 of described swing arm 6 and laser head end 7, and fastening by lock screw A16.
Numerical control rotating platform 5 is provided with balancing weight 11 by screw, for the weight of balance oscillating arm 6, ensure that numerical control rotating platform 5 normally works, simultaneously in order to alleviate the weight of swing arm 6, swing arm 6, laser head end 7 and small reflector microscope base 17 all adopt aluminum alloy materials, balancing weight 11 adopts stainless material, while guarantee weight, prevents from getting rusty in damp atmosphere.
Described small reflector microscope base 17 is fixed on the afterbody of laser head end 7 by the screw with flat head 15 of M3; Wherein: small reflector microscope base 17 adopts counter sink structure design; Before tightening screw with flat head 15, at screw with flat head 15 screw thread place, small reflector microscope base 17 is coated with one deck ultra-violet curing glue with the bonding surface place of the afterbody of laser head end 7, after tightening screw, put into ultra-violet curing case and solidify 30s, bonding surface is sealed, prevent in the laser impact intensified course of processing, have water to enter laser head internal breakdown eyeglass.
Size is that to be embedded in size on small reflector microscope base 17 be in the groove of 10mm × 9mm × 2mm to the small reflector 14 of 10mm × 9mm × 2mm.Wherein, small reflector: plating highly reflecting films, reflectance coating R > 99.81064nm, damage threshold is pulse 25J/cm
2, 10ns, 2Hz; Input angle is α=16 ± 2 °, and wavelength 532nm and 1064nm laser reflectivity thereon all can reach more than 99.5%.
Little condensing lens 12 is fixed on light-emitting window 18 place of the end 7 of laser head by lock screw B13, adopt the mode of shaft shoulder location to position; Wherein: before tightening lock screw B13, at lock screw B13 screw thread place, the bonding surface place at little condensing lens 12 edge and laser head end 7 light-emitting window 18 place is coated with one deck ultra-violet curing glue, after tightening lock screw B13, put into ultra-violet curing case and solidify 30s, bonding surface is sealed, prevent in the laser impact intensified course of processing, have water to enter laser head internal breakdown eyeglass; The lens damage threshold value of little condensing lens 12: pulse 25J/cm
2, 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon all can reach more than 99.5%.
Large condensing lens 4 is fixed on optical table 2 by mirror holder.Wherein: for by large condensing lens 4, its regulating mechanism of mirror holder be fixed on optical table 2 all adopts 4 dimension adjustment mechanisms, there is locking function, moving horizontally and the rotation of both direction of both direction can be realized, thus laser beam can be adjusted just in time pass at the vertical center from large condensing lens; The lens damage threshold value of large condensing lens 4: pulse 25J/cm
2, 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon all can reach more than 99.5%.
The diameter of little condensing lens 12 is 10mm, and focal length is 10mm, and thickness is 7mm.
The diameter of large condensing lens 4 is 50mm, and focal length is 1300mm, and thickness is 4mm.
Swing arm 6 is arranged on numerical control rotating platform 5, and by automatically to control or manual mode controls numerical control rotating platform and rotates within the scope of 90 °, laser head can be cut working position and leave working position.
The size of laser head end 7 end is 23 × 21 × 19mm, ensures that it moves freely between blade, and blade collisionless.
When there being beam diameter < 27mm, wavelength is 1064nm, angle of divergence < 3mrad, pulsewidth 8-25ns, frequency 0-5Hz laser beam enter laser head, forming the circular light spot that diameter is being about 3mm, flat-top distributes apart from laser head light hole 2mm place.
Above-mentioned laser head in use, first makes numerical control rotating platform 5 rotary work by the mode of automatic control or Non-follow control, swing arm 6 and laser head end 7 is entered working position, namely allows laser head enter working position.When there being beam diameter < 27mm, wavelength is 1064nm, it is 50mm that the laser beam of angle of divergence < 3mrad impinges perpendicularly on diameter, when focal length is on the large condensing lens of 1300mm, large condensing lens focuses of the light beam on the small reflector that size is 10mm × 9mm × 2mm, by the reflection of small reflector, laser beam being entered diameter is 10mm, focal length is in the little condensing lens of 10mm, by little condensing lens, light beam is focused on blade surface, blade pitch eyeglass outside surface is 2mm, form diameter at blade surface and be about 3mm, the circular light spot of flat-top distribution, thus realize laser-impact shock peening blisk being covered to position.
Claims (9)
1. blisk covers the laser impact intensified laser head in position, it is characterized in that: this laser head comprises numerical control rotating platform (5), swing arm (6), laser head end (7), large condensing lens (4), little condensing lens (12), small reflector (14) and small reflector microscope base (17); Wherein: numerical control rotating platform (5) and large condensing lens (4) are arranged on optical table (2) respectively by screw and mirror holder, one end of swing arm (6) is fixedly mounted on numerical control rotating platform (5); The other end of swing arm (6) is connected with laser head end (7), small reflector microscope base (17) is fixed on the end of laser head end (7), small reflector (14) is embedded in the groove of small reflector microscope base (17), the end sides of laser head end (7) is arranged light-emitting window (18), little condensing lens (12) is fixed on light-emitting window (18) place of laser head end (7); The position that small reflector microscope base (17) and light-emitting window (18) are arranged makes to be irradiated to incident light on small reflector (14) and between the reflected light reflected by small reflector (14), angle is 30-34 °;
Described small reflector microscope base (17) is fixed on the end of laser head end (7) by the screw with flat head (15) of M3; Wherein: small reflector microscope base (17) adopts counter sink structure design; Before tightening screw with flat head (15), at screw (15) screw thread place, the bonding surface place of the end of small reflector microscope base (17) and laser head end (7) is coated with one deck ultra-violet curing glue, after tightening screw, put into ultra-violet curing case and solidify 30s, bonding surface is sealed.
2. cover the laser impact intensified laser head in position by blisk according to claim 1, it is characterized in that: described swing arm (6) is made up of web plate (10), pipe connecting (9) and light pipe (8); Wherein: fixed by screw between web plate (10) and numerical control rotating platform (5); Located by the shaft shoulder between web plate (10) and pipe connecting (9), and fixed by locking screw; Located by the shaft shoulder between light pipe (8) and pipe connecting (9), and fixed by locking screw.
3. cover the laser impact intensified laser head in position by blisk according to claim 2, it is characterized in that: pad one deck rubber cushion in-between before described web plate (10) is fixing with numerical control rotating platform (5) and ensure swing arm level; Before described light pipe (8) is connected with pipe connecting (9), light pipe (8) is rotated in pipe connecting (9), for adjusting the direction of light-emitting window (18) the place Output of laser of laser head end (7), and then tighten screw and be fixed.
4. cover the laser impact intensified laser head in position by blisk according to claim 2, it is characterized in that: located by the shaft shoulder between the light pipe (8) of described swing arm (6) and laser head end (7), and fastening by lock screw A (16).
5. cover the laser impact intensified laser head in position by the blisk described in claim 1 or 2, it is characterized in that: on numerical control rotating platform (5), by screw, balancing weight (11) is installed, for the weight of balance oscillating arm (6), swing arm (6), laser head end (7) and small reflector microscope base (17) all adopt aluminum alloy materials, and balancing weight (11) adopts stainless material.
6. cover the laser impact intensified laser head in position by blisk according to claim 1, it is characterized in that: described small reflector (14) plating highly reflecting films, R > 99.81064nm; Damage threshold is pulse 25J/cm
2, 10ns, 2Hz, input angle is α=16 ± 2 °, and wavelength 532nm and 1064nm laser 16 ± 2 ° of corner reflection rates thereon reach more than 99.5%.
7. cover the laser impact intensified laser head in position by blisk according to claim 1, it is characterized in that: described little condensing lens (12) is fixed on light-emitting window (18) place of the end (7) of laser head by lock screw B (13), adopt the mode of shaft shoulder location to position; Wherein: before tightening lock screw B (13), at lock screw B (13) screw thread place, the bonding surface place at little condensing lens (12) edge and laser head end (7) light-emitting window (18) place is coated with one deck ultra-violet curing glue, after tightening lock screw B (13), put into ultra-violet curing case and solidify 30s, bonding surface is sealed.
8. cover the laser impact intensified laser head in position by blisk according to claim 1, it is characterized in that: the lens damage threshold value of described little condensing lens (12): pulse 25J/cm
2, 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon reach more than 99.5%.
9. cover the laser impact intensified laser head in position by blisk according to claim 1, it is characterized in that: for by large condensing lens (4), its regulating mechanism of mirror holder be fixed on optical table (2) all adopts 4 dimension adjustment mechanisms, the lens damage threshold value of large condensing lens (4): pulse 25J/cm
2, 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon reach more than 99.5%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210568009.3A CN103898281B (en) | 2012-12-24 | 2012-12-24 | Blisk covers the laser impact intensified laser head in position |
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| CN201210568009.3A CN103898281B (en) | 2012-12-24 | 2012-12-24 | Blisk covers the laser impact intensified laser head in position |
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| CN103898281B true CN103898281B (en) | 2016-01-13 |
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| CN108517400B (en) * | 2018-05-18 | 2019-11-26 | 广东工业大学 | A kind of energy compensating constant power density laser oblique impact method |
| CN109590148B (en) * | 2019-01-23 | 2023-08-22 | 山东交通学院 | Robot for rust removal and maintenance of track fasteners and working method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201296870Y (en) * | 2008-08-17 | 2009-08-26 | 陈培康 | High-efficiency laser machine head |
| CN203007324U (en) * | 2012-12-24 | 2013-06-19 | 中国科学院沈阳自动化研究所 | Leaser head for strengthening laser shock for shielding parts of blisk |
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| KR101217485B1 (en) * | 2010-05-03 | 2013-01-02 | 서진산업 주식회사 | Local Heat Treatment System of the Automatic Borrowing Body Parts which uses Diode Laser having High Compressed Air Injection Cooling Device and the Heat Treatment Method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201296870Y (en) * | 2008-08-17 | 2009-08-26 | 陈培康 | High-efficiency laser machine head |
| CN203007324U (en) * | 2012-12-24 | 2013-06-19 | 中国科学院沈阳自动化研究所 | Leaser head for strengthening laser shock for shielding parts of blisk |
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