CN103898297B - A kind of blisk laser shock peening method - Google Patents

A kind of blisk laser shock peening method Download PDF

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Publication number
CN103898297B
CN103898297B CN201210568051.5A CN201210568051A CN103898297B CN 103898297 B CN103898297 B CN 103898297B CN 201210568051 A CN201210568051 A CN 201210568051A CN 103898297 B CN103898297 B CN 103898297B
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light path
light
laser
reflecting mirror
blade
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CN103898297A (en
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乔红超
刘伟军
赵吉宾
于彦凤
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Shenyang Institute of Automation of CAS
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Shenyang Institute of Automation of CAS
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Abstract

The invention discloses a kind of blisk laser shock peening method, first blisk is arranged on the ring flange of track robot end by fixture by the method, then light path system being set as successively, light path three (9) works, light path one (15) works, light path four (10) works, light path two (14) works, light path four (10) work and light path two (14) work, blade back trailing region (3) to integrated impeller blade respectively successively, leaf basin front edge area (6), leaf basin trailing region (4), blade back front edge area (1), leaf basin tip region (5) and blade back tip region (2) carry out laser impact intensified.Laser shock peening method of the present invention is simple, and after leaf dish is laser impact intensified, residual compressive stress is up to more than 300MPa, and dither improves more than about 6～30 times fatigue life, and workpiece deformation is less.

Description

A kind of blisk laser shock peening method
Technical field
The present invention relates to and be applied in aero-engine integrated impeller blade technical field of surface, be specifically related to a kind of blisk laser shock peening method.
Background technology
Reiforcing laser impact technology is the plasma shock wave utilizing intense laser beam to produce, compressive surfaces residual stress can be produced at the degree of depth surface of the work more than 1mm, improve antibody Monoclonal nargin and the fatigue behaviour of blade, strengthen compared with means with the metal material surface such as cold extrusion, shot-peening, there is noncontact, strong without heat affected area, controllability and strengthen the outstanding advantages such as effect is notable.Significantly promoting through anti-foreign object damage ability and the fatigue behaviour of laser impact intensified blade, when even strengthening blade edge breach less than 3mm, its service life is still with intact not strengthen blade suitable.
Blisk is designed as a part blade and wheel disc, replaces usual blade tenon tooth and wheel disc chase mortise to add the attachment structure of locking plate again, improves the pneumatic efficiency of electromotor, has an high regard for when reliability.Traditional reinforcement technique of individual blade is shot peening strengthening, and shot peening strengthening is to surface irregular component performance difficulty, it is easy to cause the deformation of thin-wall part, is likely to surface roughness and size produce impact.
Laser impact intensified have controllability, the region specified on part can be strengthened, the present invention is directed to aero-engine blisk and propose a kind of laser shock peening method, form the performance indications such as compressive stress layer, the resisting fatigue that aero-engine leaf dish can be increased substantially and tension stress corrosion at blade surface.The application of the present invention, for solving aircraft engine blisk FATIGUE FRACTURE PROBLEMS, improving its reliability will be significant.
Summary of the invention
It is an object of the invention to provide a kind of blisk laser shock peening method for aero-engine, this laser shock peening method is simple, and strengthening quality is good, workpiece deformation is less, production efficiency is high.
The technical scheme is that
A kind of blisk laser shock peening method; first blisk is arranged on the ring flange of track robot end by fixture by the method; then light path system being set as successively, light path three works, light path one works, light path four works, light path two works, light path four works and light path two work, respectively the blade back trailing region of integrated impeller blade, leaf basin front edge area, leaf basin trailing region, blade back front edge area, leaf basin tip region and blade back tip region is carried out laser impact intensified successively.Specifically include following steps:
(1) blade back trailing region processing: light path system is switched to light path three work; track robot moves with leaf dish; start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back trailing region; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(2) leaf basin front edge area processing: light path system is switched to light path one work; track robot moves with leaf dish; start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin front edge area; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(3) leaf basin trailing region processing: light path system is switched to light path four work; track robot moves with leaf dish; start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin trailing region; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(4) blade back front edge area processing: light path system is switched to light path two work; track robot moves with leaf dish; start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back front edge area; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(5) leaf basin tip region processing: light path system is switched to light path four work; track robot moves with leaf dish; start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin tip region; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(6) blade back tip region processing: light path system is switched to light path two work; track robot moves with leaf dish; start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back tip region; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining.
Described light path system includes: the light path one being arranged on optical table switches slide unit with light path two, light path three switches slide unit and light-emitting window slide unit with light path four；It is arranged on the nc sliding table for light path switching inside laser instrument；It is arranged on light path three turntable on optical table and light path one turntable；It is arranged on the light path three on optical table and light path four verifies slide unit and light path one verifies slide unit with light path two；It is arranged on the light path two-mirror on optical table, light path four reflecting mirror, reflecting mirror A and reflecting mirror B；It is arranged on light path one focus lamp on optical table, light path three focus lamp, light path two focus lamp and light path four focus lamp, the even smooth eyeglass of light path two being arranged on optical table and the even smooth eyeglass of light path four, described light path two focus lamp and the light path two even smooth eyeglass composition even smooth focus lamp group of light path two, described light path four focus lamp and the light path four even smooth eyeglass composition even smooth focus lamp group of light path four；It is separately mounted to light path one swing arm on light path one turntable and light path three turntable and light path three swing arm；It is separately mounted to light path one small reflector and light path three small reflector of light path one swing arm end and light path three swing arm end；It is separately mounted to light path one and light path two and switches light path one reflecting mirror and light path three reflecting mirror that slide unit and light path three and light path four switch on slide unit；It is arranged on the reflecting mirror C on light-emitting window slide unit and reflecting mirror D；It is arranged on the reflecting mirror E on nc sliding table；It is arranged on the light combination mirror within laser instrument；It is separately mounted to light path three and light path four verify the light path three that slide unit and light path one and light path two verify on slide unit and verify energy meter with light path four and light path one verifies energy meter with light path two；It is arranged on the protective plate on optical table, protective cover and light pipe.
Described reflecting mirror E is under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to slide on nc sliding table；Laser instrument arranges light-emitting window A and light-emitting window B；When reflecting mirror E is in light-emitting window A dead ahead, laser beam A is reflected mirror E and reflexes to light combination mirror, and the laser reflected then through light combination mirror exports by light hole B with laser beam B；When reflecting mirror E is in the position between light-emitting window A and light-emitting window B, laser beam A and laser beam B export from light-emitting window A and light-emitting window B respectively.
nullDescribed light path system is switched to light path three work and refers to: when light path one swing arm is not located at operating position，When reflecting mirror E is in A light-emitting window dead ahead，Laser beam A is reflected mirror E reflection，To light combination mirror，The laser reflected then through light combination mirror exports by light hole B with laser beam B，Simultaneously when reflecting mirror C is in the rear of light hole B，The laser of B light hole output is reflected the reflection of mirror C and can reflex on the reflecting mirror A of reflecting mirror C left，Simultaneously when light path three reflecting mirror is in the dead astern of reflecting mirror A reflected light path，Reflecting mirror A reflection carrys out laser and reflexes on light path three focus lamp through light path three reflecting mirror，When light path three swing arm pendulum is exactly in the front-right of light path three focus lamp output light path to light path three small reflector，Light path three small reflector is by the laser-bounce that exports through light path three focus lamp to surface of the work，Form the circular light spot of the uniform intensity that diameter is 2-5mm，The blade back trailing region of processing aero-engine leaf dish；
nullDescribed light path system is switched to light path one work and refers to: when light path three swing arm is not located at operating position，When reflecting mirror E is in light-emitting window A dead ahead，Laser beam A is reflected mirror E reflection，To light combination mirror，The laser reflected then through light combination mirror exports by light hole B with laser beam B，Simultaneously when reflecting mirror C and reflecting mirror D is in the dead astern of light hole A and light hole B respectively，The laser of light hole B output is reflected the reflective of mirror D to the reflecting mirror B of reflecting mirror D right，Simultaneously when light path one reflecting mirror is in the dead astern of reflecting mirror B reflected light path，Reflecting mirror B reflection carrys out laser and reflexes on light path one focus lamp through light path one reflecting mirror，Simultaneously when the front-left being exactly in light path one focus lamp output light path to light path one small reflector is put in light path one swing arm，Light path one small reflector is by the laser-bounce that exports through light path one focus lamp to surface of the work，Form the circular light spot of the uniform intensity that diameter is 2-5mm，The leaf basin front edge area of processing aero-engine leaf dish；
Described light path system is switched to light path four work and refers to: when light path one swing arm and light path three swing arm are all not located at operating position, when reflecting mirror E is in A light-emitting window dead ahead, laser beam A is reflected mirror E reflection, to light combination mirror, the laser reflected then through light combination mirror exports by light hole B with laser beam B, simultaneously when reflecting mirror C is in the rear of light hole B, the laser of B light hole output is reflected the reflection of mirror C and can reflex on the reflecting mirror A of reflecting mirror C left, simultaneously when light path three reflecting mirror is not at the dead astern of reflecting mirror A reflected light path, reflecting mirror A reflection carrys out laser and reflexes in the even smooth focus lamp group of light path four through light path four reflecting mirror, form the square focus spot of the uniform intensity of length of side 2-5mm, the leaf basin trailing region of processing aero-engine leaf dish and leaf basin tip region；
nullDescribed light path system is switched to light path two work and refers to: when light path one swing arm and light path three swing arm are all not located at operating position，When reflecting mirror E is in light-emitting window A dead ahead，Laser beam A is reflected mirror E reflection，To light combination mirror，The laser reflected then through light combination mirror exports by light hole B with laser beam B，Simultaneously when reflecting mirror C and reflecting mirror D is in the rear of light hole A and light hole B respectively，The laser of B light hole output is reflected the reflective of mirror D to the reflecting mirror B of reflecting mirror D front-right，Simultaneously when light path one reflecting mirror is not at the dead astern of reflecting mirror B reflected light path，Reflecting mirror B reflection carrys out laser and reflexes in the even smooth focus lamp group of light path two through light path two-mirror，Form the square focus spot of the uniform intensity of length of side 2-5mm，The blade back front edge area of processing aero-engine leaf dish and blade back tip region.
Blisk is carried out laser impact intensified before, first the light path three (9) of light path system, light path four (10), light path two (14) and light path one (15) are verified, it is ensured that all can normal operation.
Before blisk regional is processed, first paste on region to be processed thickness be 100 μm, width be the black tape of 14mm as absorbed layer, after this region processing is completed, remove black tape thereon.
In described laser impact intensified process, adopt deionized water as restraint layer；Deionization resistivity of water is 18,000,000, and the thickness of restraint layer is 1-2mm, and thickness is uniform.
Laser beam A and laser beam B are input wavelength to be 1064nm, single pulse energy be 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, described light path three (9) and light path one (15) output single pulse energy 6-10J, pulsewidth 15-20ns, spot diameter are sized to the circular laser beam of 3mm.
Laser beam A and laser beam B are input wavelength to be 1064nm, single pulse energy be 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, described light path four (10) and the square laser bundle that light path two (14) output single pulse energy 7-10J, pulsewidth 15-20ns, spot size are length of side 3mm.
The repetitive positioning accuracy of described track robot is ± 0.09mm.Described laser impact intensified mode adopts track robot to move, and laser-impact mode once is processed, and namely pointwise is processed.
Described laser impact intensified in, the overlapping rate of circular light spot is 20%-30%, and the overlapping rate of square focus spot is 5%-15%.The territory, Laser Shock Processing of described blisk is the region in blade back leading edge 12mm, region in blade back blade tip 12mm, region in blade back trailing edge 12mm, region in leaf basin trailing edge 12mm, the region of leaf basin blade tip 12mm, the region of leaf basin leading edge 12mm, i.e. regional extent in blade periphery 12mm, base region is not processed.
Described desired trajectory refers to: blisk laser impact intensified, machining area for each leading edge and trailing edge, the precedence of shock peening is: first process from blade root direction to blade tip direction in edge, then offset distance to a declared goal to blade interior to process from blade root direction to blade tip direction again, reciprocal 4 times altogether；For the machining area of each blade tip, the precedence of shock peening is: first process from leading edge direction to trailing edge direction at blade tip place, then offsets distance to a declared goal to blade interior and processes from leading edge direction to trailing edge direction, reciprocal 4 times altogether；Described distance to a declared goal refers to that the overlapping rate according to circular light spot or square focus spot offsets to blade interior.
Described blisk laser impact intensified, for the last processing together near blade interior, energy is lower by 20% than the energy used by front 3 roads.
The present invention has the beneficial effect that:
1, square focus spot and circular light spot automatic, quickly switch, the efficiency of shock peening processing is high.
2, the deflection of workpiece is little.
3, leaf dish laser impact intensified after, residual compressive stress is up to more than 300MPa.
4, the leaf dish dither after laser impact intensified process improves more than about 20～30 times fatigue life.
Accompanying drawing explanation
Fig. 1 is the inventive method device therefor overall plan figure；
Fig. 2 is inventive method device therefor schematic layout pattern；
Fig. 3 is water feeding machine device people's system 105 structural representation of partial enlargement in Fig. 2；
Fig. 4 is the structural representation of the light path system 103 of partial enlargement in Fig. 2 and laser head 109；
Fig. 5 is the operating diagram of track robot 106 of the present invention；
Wherein, 107 is leaf dish, and 111 is nozzle, and 115 is laser beam；
Fig. 6 is the structural representation sending water system 101 in device therefor；
Fig. 7 is device therefor hardware composition schematic diagram；
Fig. 8 is the clamp structure schematic diagram of device therefor of the present invention；
Fig. 9 is the top view of fixture adpting flange in device therefor of the present invention；
Figure 10 is the A-A sectional view of Fig. 9；
Figure 11 is the structural representation of fixture cone support member in device therefor of the present invention；
Figure 12 is the structural representation of chucking opening packing in device therefor of the present invention；
Figure 13 is the top view of Figure 12；
Figure 14 is the top view of point cone such as fixture in device therefor of the present invention；
Figure 15 is the A-A sectional view of Figure 14；
Figure 16 is the structural representation of fixture gland in device therefor of the present invention；
Figure 17 is the structural representation of fixture abnormity nut in device therefor of the present invention；
Figure 18 is the top view of Figure 17；
Wherein: 1 is abnormity nut, 2 is screw, and 3 is adpting flange, and 4 is screw, and 5 is cone support member, and 6 is decile cone, and 7 is opening packing, and 8 is leaf dish, and 9 is rubber cushion, and 10 is gland, and 11 is plain cushion, and 12 is pull bar, and 13 is pin, and 14 is connecting plate, and 15 is tapered dowel；
Figure 19 is the light path system structure chart of laser head part in device therefor of the present invention；
Figure 20 is the laser head structure schematic diagram being installed in light path system of the present invention；
Figure 21 is laser head part light path system light path schematic diagram in the present invention；
Figure 22 is laser head end structure schematic diagram；
Figure 23 is small reflector microscope base schematic diagram；
Wherein: 102 is laser instrument, 515 is optical table, and 903 is light pipe A, 511 is big focus lamp, and 905 is numerical control rotating platform, and 906 is swing arm, 907 is laser head end, and 908 is light pipe, and 909 is connecting tube, 910 is connecting plate, and 911 is balancing weight, and 912 is little focus lamp, 913 is lock screw B, and 914 is small reflector, and 915 is flat head screw, 916 is lock screw A, and 917 is small reflector microscope base, and 918 is light-emitting window；
Figure 24 is the equipment fundamental diagram of the present invention；
Figure 25 is the light path system sketch of the present invention;
Figure 26 is the light path system top view of the present invention;
Figure 27 is the light path system axonometric chart of the present invention;
Figure 28 is optical table structure diagram;
Figure 29 is the laser beam design sketch of optic path;
Wherein: 501 switch slide unit for light path one and light path two, 502 is light path two-mirror, 503 is light path one reflecting mirror, 504 is the even smooth focus lamp group of light path two, 505 is light path one focus lamp, 506 is light path one turntable, 507 is light path one small reflector, and 508 is light path three small reflector, and 509 is light path three turntable, 510 is the even smooth focus lamp group of light path four, 511 is light path three focus lamp, and 512 is light path four reflecting mirror, and 513 is light path three reflecting mirror, 514 switch slide unit for light path three and light path four, and 515 is optical table；516 is reflecting mirror A, 517 is light-emitting window slide unit, 518 is reflecting mirror C, 102 is laser instrument, 520 is reflecting mirror E, 521 is nc sliding table, 522 is reflecting mirror D, 523 is reflecting mirror B, 524 is the even smooth eyeglass of light path two, 525 is light path two focus lamp, 526 verify slide unit for light path three and light path four, 527 verify energy meter for light path three and light path four, 528 is light path one swing arm, 529 is light path three swing arm, 530 verify energy meter for light path one and light path two, 531 verify slide unit for light path one and light path two, 532 is light path four focus lamp, 533 is the even smooth eyeglass of light path four, 534 is protective plate, 535 is protective cover, 903 is light pipe A, 537 is light combination mirror.
Figure 30 is territory, blisk Laser Shock Processing of the present invention；Wherein: the convex surface view that figure (a) is integrated impeller blade；The concave surface view that figure (b) is integrated impeller blade；.
Figure 31 is circular light spot of the present invention overlap joint schematic diagram.
Figure 32 is square focus spot of the present invention overlap joint schematic diagram.
Wherein: 401 is blade back front edge area, 402 is blade back tip region, and 403 is blade back trailing region, and 404 is leaf basin trailing region, 405 is leaf basin tip region, and 406 is leaf basin front edge area, and 409 is light path three, 410 is light path four, and 414 is light path two, and 415 is light path one.
Detailed description of the invention
Below in conjunction with drawings and Examples in detail the present invention is described in detail.
Used by laser shock peening method of the present invention, a preferred equipment is as follows:
The structure and layout of this equipment are as in figure 2 it is shown, send water system 101 to be connected with water feeding machine device people's system 110, it is achieved water is delivered to the machining area of leaf dish 107 according to assigned direction and size；The laser beam that laser instrument 102 sends, being transmitted directly to the machining area of leaf dish 107 by being arranged on the light path system 103 of laser instrument 102 dead ahead or be transferred to the machining area of leaf dish 107 by light path system 103 and laser head 109, wherein the light-emitting window of laser instrument 102 aligns with the light inlet of light path system 103；Acoustic pressure Quality Monitoring Control System 316 is arranged on support 105 and with leaf dish 107 machining area with high, for monitoring the crudy of leaf dish；It is arranged on support 105 machining process monitoring system 313 for the running status of monitoring device; leaf dish 107 is arranged on track robot 106 arm end by fixture 108; it is driven to move by track robot; laser instrument 102 is connected with host computer 112 by laser controller 113; water feeding machine device people 110 and track robot are connected with host computer by robot controller 114, and described send water system 101, laser instrument 102, Quality Monitoring Control System 104, water feeding machine device people 110, track robot 106, light path system 103 are uniformly controlled by host computer 112.
As shown in figs. 1-7, device therefor of the present invention includes laser instrument 102, the track robot 106 that clamping leaf dish 107 moves along intended trajectory relative to laser beam, clamping nozzle 111 moves along intended trajectory and water is delivered to the water feeding machine device people 110 of machining area, the restraint layer controlling water yield size and automatic start-stop send water system (including sending water system 101 and water feeding machine device people's system 105), the acoustic pressure Quality Monitoring Control System 104 of real time on-line monitoring crudy, monitor and control the machining process monitoring system 313 that equipment is properly functioning, the laser beam reshaping that sent by laser instrument 102 also transmits the light path system 103 to Working position.
Wherein: laser instrument 102 is for producing the laser of the short pulse punching of pulsewidth 8～25ns, frequency 0～10Hz, beam diameter < 27mm, single pulse energy < 25J, focus on through follow-up light path system, it is possible to produce peak power density (> 109w/cm2) laser, thus between metal targets and restraint layer formed plasma.
Workpiece (leaf dish) is fixed in the end clamp 108 of track robot 106; the drive relying on robot makes workpiece motion s enter processing space; and constantly adjust position and the attitude of workpiece according to strengthening machining locus, thus realizing the laser impact intensified of workpiece diverse location.Meanwhile, the end clamp of robot also realizes the indexed rotational motion of leaf dish, thus realizing the laser impact intensified processing of different leaves on leaf dish.
Nozzle 111 is arranged on the flange of water feeding machine device people 110 end, the drive relying on robot makes nozzle 111 be moved into processing space, and constantly adjust position and the attitude of nozzle according to strengthening machining locus, thus the waterflow stabilization realizing machining area is uniform.
Restraint layer send water system to be made up of water tank 624, water pump 627, electromagnetic valve 618, flow valve 311, liquid level sensor (level sensor) 623, flow transducer (water flow sensing unit) 626, header tank 314 etc..By the moisture storage capacity of the deionized water in liquid level sensor 626 and electromagnetic valve 312 Monitoring and Controlling water tank 624, automatic water supplement during water shortage, when the water yield exceedes setting value, Self-shut electromagnetic valve 312 stops moisturizing；Deionized water is pumped to flow valve 311 by constant voltage water pump 627 from water tank 624 is inner, it is ensured that the constant pressure of flow valve 311 water inlet；The uninterrupted at nozzle 111 place is adjusted by constant voltage water pump 627；Monitor pump outlet by flow transducer 626 to circulate either with or without deionized water；The break-make of current is controlled by the electromagnetic valve 312 before nozzle 111.
Acoustic pressure Quality Monitoring Control System 316 characterizes, by monitoring the shock wave energy of laser-impact, the effect that laser-impact processes, and in the leaf dish course of processing, often impacts processing and once all records corresponding data, and the adjustment for technological parameter provides reference.
The course of processing parameter of laser-impact is monitored pre-control by machining process monitoring system 313 in real time, it is achieved water feeding machine device people and track robot motion monitor in real time, laser instrument 102 running state real-time monitoring, it is achieved unmanned in workshop, remotely monitor.
Laser Transmission to specifying position, and is shaped to the hot spot of required size shape by light path system 103, can realize single two-sided processing any switching laws, circular light spot and square focus spot any switching laws simultaneously.
As Figure 1-5, the laser impact intensified equipment of blisk, including can the laser instrument 102 of outgoing laser beam, with the track robot 106 that movable vane dish moves along intended trajectory relative to laser beam, clamping shower nozzle moves along intended trajectory and water is delivered to water feeding machine device people's system 104 of machining area, the restraint layer controlling water yield size and automatic start-stop send water system 101, the acoustic pressure Quality Monitoring Control System 316 of real time on-line monitoring crudy, monitor and control the machining process monitoring system 313 that equipment is properly functioning, the laser beam reshaping that sent by laser instrument also transmits the light path system 103 to Working position.The laser that laser instrument 102 sends guides to the surface of workpiece by light path system 103, and the light hole of laser instrument 102 and the light well of light path system coordinate, it is ensured that laser beam is completely vertically into light path system 103.Send water system 101 that water is delivered to nozzle 111 place, water feeding machine device people 110 drives nozzle 111, water is sprayed onto the Working position place of workpiece 107, the running status of the monitoring of PMS 313 moment and control system and the method for operation, acoustic pressure Quality Monitoring Control System 316 detects the crudy of workpiece, and feed back to industrial computer, carry out adjusting process parameter so that crudy reaches optimum.The cooperation with software that closely cooperates of above-mentioned each subsystem, forms laser impact intensified equipment, it is achieved the laser impact intensified process of leaf dish, improves the fatigue life of workpiece.
Laser instrument function in device therefor of the present invention is as follows:
The laser instrument 102 of outgoing laser beam can output wavelength be 532nm, diameter be 3mm, and light intensity is 0.1-2mJ/cm2Direct light, for observing the position of laser beam and hot spot, can output wavelength 1064nm, diameter to be 27mm, single pulse energy 25J, frequency be 0-5Hz, pulsewidth be the pulse laser of 8-25nns, for laser impact intensified simultaneously.
The laser beam of the wavelength 532nm of laser instrument 102 output and the laser beam axiality < 0.5mrad of wavelength 1064nm.
The working method of laser instrument 102 be separate unit two-way and can single channel work, namely laser instrument has two light hole A and B, A light holes and the B light hole can Output of laser simultaneously, it is also possible to only from B light hole Output of laser.When selecting A, B light hole to go out light simultaneously, A, B light hole is maximum can output wavelength 1064nm, diameter to be 27mm, single pulse energy 12.5J, frequency be 0-5Hz, pulsewidth be simultaneously the pulse laser of 8-25nns, can output wavelength be 532nm, diameter being simultaneously 3mm, light intensity be 0.1-2mJ/cm2Direct light；Select only from B light hole go out light time, B light hole is maximum can output wavelength 1064nm, diameter to be 27mm, single pulse energy 25J, frequency be 0-5Hz, pulsewidth be simultaneously the pulse laser of 8-25nns, can output wavelength be 532nm, diameter being simultaneously 3mm, light intensity be 0.1-2mJ/cm2Direct light.
The centre-to-centre spacing laser instrument left side edge 250mm that centre-to-centre spacing is 231mm, B light hole of two light hole A and B of laser instrument 102.A and B light hole, in same level, is 895mm from ground level.
On laser instrument 102, A light hole, B light hole go out light simultaneously or only have B light hole to go out the switching mode of light: 45 ° of completely reflecting mirrors before the A light hole that can manually slide, it is possible to 45 ° of completely reflecting mirrors before nc sliding table driving A light hole are cut or cut out light path and realize.
The size of laser instrument 102 is 2400mm × 1200mm × 1300mm.
The robot that the present invention adopts includes:
Track robot 106 clamps what leaf dish 107 moved along intended trajectory relative to laser beam.Track robot 106 is 6DOF robot, model is RX270, and maximum load is 250Kg, reach distance be 2900mm, repetitive positioning accuracy is ± 0.09mm, and degree of protection is IP65.
Water feeding machine device people 110 clamps shower nozzle, along intended trajectory, water is delivered to machining area.Water feeding machine device people 110 is 6DOF robot, model is TX40, and maximum load is 2Kg, reach distance be 500mm, repetitive positioning accuracy is ± 0.02mm, and degree of protection is IP65.
Device therefor of the present invention send water system structure and function as follows:
As shown in Figure 6, the restraint layer controlling water yield size and automatic start-stop send water system that deionized water is delivered to nozzle 111.Restraint layer send water system to be made up of water source 615, water valve 616, water inlet pipe 617, entering water electromagnetic valve 618, overfall 619, overflow pipe 620, ball valve A621, blow-off pipe 622, level sensor 623, storage tank 624, ball valve B625, water flow sensing unit 626, water pump 627, flow valve 311, electromagnetic valve 312, nozzle 111.Water valve 616 is connected on water source 615, realize the break-make of current between water source and water inlet pipe 617, entering water electromagnetic valve 618 is arranged between water inlet pipe 617 and storage tank 624, overflow pipe 620 is arranged on overfall 619, blow-off pipe 622 is connected on storage tank 624 by ball valve A621, and level sensor 623 is arranged on the bottom of storage tank.Ball valve B625 is arranged on the bottom of storage tank 624 and is linked together by water pipe with water pump 627.Water flow sensing unit 626 is arranged on the port of export of water pump 627, guides on flow valve 311 with water pipe by the water in water flow sensing unit 626 exit, and electromagnetic valve 312 controls the break-make of flow valve 311 outlet, electromagnetic valve 312 and nozzle 111 is coupled together with water pipe.Thus realizing the water at water source 615 place is delivered to nozzle 111 place.The water of nozzle 111 ejection is collected by header tank 624, sends into water treatment plant together with overflow pipe 620, blow-off pipe 622 water out.
Cooperated by entering water electromagnetic valve 617 and level sensor 623 and industrial computer, it is achieved storage tank 624 automatic water supplement, it is ensured that the water yield in storage tank 624 remains at the 30%-80% of storage tank 624 total capacity.Simultaneously as be mounted with overflow pipe 620 so that send water system more safe and reliable.
Control the size of flow in nozzle 111 by feed water flow sensor 626, constant voltage water pump 627, flow valve 311, electromagnetic valve 312, and can control in real time.
Water system, water feeding machine device people 110 is sent to control the size of flow in nozzle 111, the position of nozzle and attitude by restraint layer so that the water layer thickness of machining area leaf panel surface is 1-2mm, and uniform and stable, continuously adjustabe.
Device therefor of the present invention monitors system structure and function is as follows:
Laser impact intensified crudy is monitored by acoustic pressure Quality Monitoring Control System 316 in real time, it is thus achieved that the data of processing effect.Acoustic pressure Quality Monitoring Control System is 3 channel sound emission sensor, is connected with the data collecting card of industrial computer (host computer) by connection amplifier, also being inserted with PCI-1780 timer counter card in industrial computer, ET-3000TIL laser detector is fixed on the light-emitting window place of laser instrument；Timer counter card ensures that laser instrument 102 and acoustic pressure Quality Monitoring Control System 316 work under same clock, when laser 102 device sends laser, laser detector detects laser, detector sends a signal to industrial computer, industrial computer turn-on data capture card carries out data acquisition, being stored by the acquisition signal of acoustic emission sensor, the signal gathered is analyzed by industrial computer, it is judged that the quality of crudy.
Monitoring and control equipment is properly functioning includes: the photographic head of machining process monitoring system 313 is connected with host computer, for monitoring the processing situation of aero-engine blisk；It is arranged on the temperature sensor within laser instrument 102 to be connected with host computer, for monitoring laser whether normal operation；The position sensor and the encoder that are arranged on water feeding machine device people 110 and track robot 106 joint are connected with host computer, are used for monitoring the position of track robot, water feeding machine device people；The photoelectric sensor being arranged in light path system light-emitting window is connected with host computer, is used for monitoring light path system whether normal operation；The pressure transducer (level sensor) sending water system 101 is connected with host computer, and whether the water level in monitoring storage tank is normal, and whole equipment is controlled by host computer in real time, they is joined as a whole by data wire.
The operation principle of device therefor of the present invention is as follows:
As shown in figure 24, the function of host computer is mainly made up of robot motion planning, machining process simulating, machining process monitoring, crudy monitoring, technological data bank and system coordination control etc., under the control of host computer, water system is sent to produce current and be delivered to shower nozzle, water feeding machine device people's system controls the size of discharge, break-make, and drive shower nozzle motion that water is delivered to the machining area that leaf dish is specified, form restraint layer specifying position；Track robot drives the leaf dish being contained on fixture according to specifying machining path motion；Laser instrument Output of laser, transmission is to light path system, and from light path system, laser out is radiated at the surface of leaf dish machining area or is radiated at the surface of machining area through laser head；Quality Monitoring Control System and video/alarm monitoring system in monitoring system monitor the laser impact intensified quality of leaf dish and system running state respectively.The cooperation of said system realizes the laser impact intensified processing of whole leaf dish, improves fatigue life and the anti-stress corrosion performance of leaf dish.
Laser beam reshaping that laser instrument is sent by light path system 103 also transmits to Working position.Light path system 103 includes nc sliding table, numerical control rotating platform, reflecting mirror, focus lamp, even light microscopic, swing arm composition.Light path system 103 is entered, it is possible to export square focus spot or circular light spot from light path system, wherein from the laser beam of laser instrument 102 output, the light path of output square focus spot is made up of 2 sets, and symmetrical in structure, the light path of output circular light spot is made up of 2 sets, and symmetrical in structure.4 set light paths can according to processing needs, and any switching laws is a set of light path therein work, it is also possible to the light path exporting square focus spot switching to 2 sets symmetrical works simultaneously.
When A, B light hole selecting laser instrument 102 goes out light simultaneously, A, B light hole output simultaneously output wavelength 1064nm, diameter are 27mm, single pulse energy 0-12.5J, frequency be 0-5Hz, pulsewidth is the pulse laser of 8-25nns, output wavelength is 532nm, diameter is 3mm, and light intensity is 0.1-2mJ/cm2Direct light, when selecting the light paths of 2 set symmetrical output square focus spot to work simultaneously, the length of side can be formed at surface of the work and be about the square focus spot of 2-4mm.
When selecting laser instrument 102 to only have B light hole to go out light, B light hole exports output wavelength 1064nm, diameter is 27mm, single pulse energy 0-25J, frequency are 0-5Hz, pulsewidth is the pulse laser of 8-25nns, output wavelength is 532nm, diameter is 3mm, and light intensity is 0.1-2mJ/cm2Direct light, when selecting any a set of light paths work of the light path of 2 set symmetrical output square focus spot, the length of side can be formed at surface of the work and be about the square focus spot of 2-4mm.
When selecting laser instrument 102 to only have B light hole to go out light, B light hole exports output wavelength 1064nm, diameter is 27mm, single pulse energy 0-25J, frequency are 0-5Hz, pulsewidth is the pulse laser of 8-25nns, output wavelength is 532nm, diameter is 3mm, and light intensity is 0.1-2mJ/cm2Direct light, when selecting any a set of light paths work of the light path of 2 set symmetrical output circular light spot, diameter can be formed at surface of the work and be about the circular light spot of 2-4mm.
Laser impact intensified equipment can add blisk or the structural member of the materials such as the size < 1000mm × high temperature alloy of 1000mm × 400Tm, weight < 250Kg, steel, aluminium alloy.
The software system of laser impact intensified equipment includes robot motion's trajectory planning module, machining process simulating module, machining process monitoring module, crudy monitoring module, process data library management module, system integration module, ensure that machining path is optimum, the safest, the most reliable.
This equipment is utilized to the process of work pieces process to be:
During use, first blisk 107 is arranged on fixture 108；Then fixture 108 is arranged on the flange of track robot 106 end；Then, paste one layer of absorbed layer in the region to be processed of blisk 107, be used for absorbing laser energy；Then, in running order by selecting any a set of light path or 2 to overlap the light path exporting square focus spots；Then, track robot enters Working position with blisk；Then, water feeding machine device people 110 enters Working position with shower nozzle 111；Then opening and send water system 101, uniform the surface of leaf dish machining area formation one layer, stable, thickness is the deionized water of 1-2mm；Then, laser instrument 102 is opened；Finally, track robot 106 and water feeding machine device people 110 are according to the orbiting motion formulated in advance, it is achieved aero-engine blisk laser impact intensified.
The structure of fixture is specific as follows:
As shown in Fig. 8-18, fixture includes abnormity nut 1, adpting flange 3, cone support member 5, decile cone 6, opening packing 7, rubber cushion 9, gland 10, plain cushion 11, pull bar 12, positioning apparatus for circumferential direction and screw 2, wherein positioning apparatus for circumferential direction includes pin 13, connecting plate 14 and tapered dowel 15, pin 13 and tapered dowel 15 are separately mounted in the pin-and-hole at connecting plate two ends, interference fit is adopted between pin 13 and tapered dowel 15 and connecting plate 14, both pin 13 in the process of dismounting leaf dish 8 had been ensured, tapered dowel 15 and connecting plate 14 are always one, ensure that again location is reliable.Abnormity nut 1 is arranged on one end of adpting flange 3 by screw 2, and the end face of cone support member 5 one end passes through screw 4 and the pin location and installation other end at adpting flange 3.Decile cone 6 is sleeved on outside the other end of cone support member 5, and the lower end edge circumferencial direction of decile cone 6 is uniform offers multiple gap, and each gap is all offered along cone generatrices direction, makes decile cone 6 have elasticity.Opening packing 7 is sleeved on the outside of decile cone 6, and leaf dish 8 is sleeved on the outside of opening packing 7, and the end face of leaf dish 8 exhaust side matches with the end face of cone support member 5 one end.Rubber cushion 9 is fixed by screws on gland 10, it is ensured that to leaf dish 8 without scuffing in the process stepped up.Gland 10 is arranged at the upper end of decile cone 6.Rotate leaf dish 8, tapered dowel 15 and pin 13 are inserted respectively in the pin-and-hole of leaf dish 8 and cone support member 5；Plain cushion 11 is put, it is ensured that to gland 10 uniform force in the process stepped up in the outside of gland 10.Pull bar 12 is threadeded through plain cushion 11, gland 10, cone support member 5 and adpting flange 3 with abnormity nut 1.In the process screwing pull bar 12, the continuous outward expansion of opening packing 7, it is achieved leaf dish 8 axially positions and radially position, add and fasten.Adpting flange 3 is realized and the connection of robot ring flange, location by screw and alignment pin.
The tapering of the conical surface that cone support member 5 and decile cone 6 match is 7:24, decile cone 6 long 4.5mm more axial than cone support member 5, after stepping up, the lower surface of decile cone 6 end face from cone support member 5 one end has gap all the time, all the time gap is had between the other end and the gland 10 of cone support member 5, ensureing that the conical surface matched steps up reliably, leaf dish 8 steps up reliably.
Packing 7 adopts copper product, cone support member 5 and tapered dowel 15 to adopt duralumin, hard alumin ium alloy material, it is ensured that to leaf dish 8 without scuffing.Adpting flange 3 adopts stainless steel material, it is ensured that the rigidity of integral clamp.
The using method of clamp is:
During use, first, being arranged on adpting flange 3 by abnormity nut 1 by screw 2, adpting flange 3 and cone support member 5 are installed together by pin and screw 4, rubber cushion 9 and gland 10 are installed together by screw, and pin 13 and tapered dowel 15 are installed together with connecting plate 14；Then, adpting flange 3 is installed together by screw and alignment pin and robot ring flange；Then, the outside that point cone 6 will be waited to be sleeved on cone support member 5；Then, opening packing 7 is sleeved on the outside of decile cone 6；Then, leaf dish 8 being sleeved on the outside of opening packing 7, the exhaust end end face of leaf dish 8 is fitted with the end face of cone support member 5, it is achieved end face positions；Then, pivoting leaf dish 8, pin 13 and pin 15 are separately mounted in the hole, location of leaf dish 8 and the hole, location of cone support member 5, it is achieved leaf dish 8 is circumferentially positioned；Then, plain cushion 11 is enclosed within pull bar 12, and on the optical axis of one end of nut；Then, by pull bar 12 by being threaded in abnormity nut 1；Finally, constantly tighten pull bar 12, now, gland 10 constantly moves to leaf dish 8 direction, and cone support member 5 and decile cone 6 contact area are increasing, constantly order about opening packing 7 outward expansion, swelling leaf dish 8, it is achieved axle center positions, simultaneously, gland 10 is constantly pressed on the end face of leaf dish 8 by rubber cushion 9, it is achieved step up.
After machining, during dismounting leaf dish 8, spin off pull bar 12, take off plain cushion 11, take off the pin 13, connecting plate 14 and the tapered dowel 15 that link together, take off gland 10, just desirable inferior lobe dish 8.
Leaf dish is clamped location by pull bar by clamp, and quickly and easily, the dismounting leaf dish time was less than 2 minutes for clamping and positioning process；；It is capable of loading maximum weight and is about the blisk of 100kg；The method adopting bearing pin, end face and expansion core location, repetitive positioning accuracy is high, and location is reliable；Clamping and positioning is reliable, drastically increases the laser impact intensified quality of leaf dish and production efficiency；There is simple in construction, light weight, easy to use, low cost and other advantages, while improving production efficiency, it is ensured that the uniformity of shock peening quality and stability；The position contacted with leaf dish have employed rubber cushion, copper and aluminum alloy materials, and jig main body adopts stainless steel material, it is ensured that to leaf dish without scuffing, fixture is being immersed in non-corrosive under the working condition in water.
Laser head structure is specific as follows:
Blisk of the present invention covers the laser impact intensified laser head structure in position such as shown in Figure 19-23, and this laser head includes numerical control rotating platform 905, swing arm 906, laser head end 907, big focus lamp 511, little focus lamp 912, small reflector 914 and small reflector microscope base 917；Wherein: numerical control rotating platform 905 and big focus lamp 511 are arranged on optical table 515 respectively through screw and mirror holder, one end of swing arm 906 is fixedly mounted on numerical control rotating platform 905, and mode manually or automatically can make swing arm 906 enter working position and leave working position；The other end of swing arm 906 is connected with laser head end 907, small reflector microscope base 917 is fixed on the end of laser head end 907, small reflector 914 is embedded in the groove of small reflector microscope base 917, arranging light-emitting window 918 in the end sides of laser head end 907, little focus lamp 912 is fixed on light-emitting window 918 place of laser head end 907；The position that small reflector microscope base 917 and light-emitting window 918 are arranged makes angle between the incident illumination being irradiated on small reflector 914 and the reflection light reflected by small reflector 914 be 30-34 °.
Described swing arm 906 is made up of connecting plate 910, connecting tube 909 and light pipe 908；Wherein: fixed by screw between connecting plate 910 and numerical control rotating platform 905, by padding one layer of rubber cushion guarantee swing arm level between connecting plate 910 and numerical control rotating platform 905；Positioned by the shaft shoulder between connecting plate 910 and connecting tube 909, and fixed by lock-screw；Positioned by the shaft shoulder between light pipe 908 and connecting tube 909, and fixed by lock-screw；Before light pipe 908 is connected with connecting tube 909, light pipe 908 can be rotated in advance in connecting tube 909, adjust the direction of laser head end 907 Output of laser, the present invention is by rotate light pipe 908 for ensureing that laser level direction, light-emitting window place export, then tighten again screw be fixed prevent rotation.
Positioned by the shaft shoulder between light pipe 908 and the laser head end 907 of described swing arm 906, and fastened by lock screw A916.
Numerical control rotating platform 905 is provided with balancing weight 911 by screw, weight for balance oscillating arm 906, ensure numerical control rotating platform 905 normal operation, simultaneously in order to alleviate the weight of swing arm 906, swing arm 906, laser head end 907 and small reflector microscope base 917 all adopt aluminum alloy materials, balancing weight 911 adopts stainless steel material, while ensureing weight, it is prevented that get rusty in humid air.Numerical control rotating platform (905) is connected with motor coaxle, and motor is controlled by host computer (112), and the encoder of motor is connected with host computer (112).
Described small reflector microscope base 917 is fixed on the afterbody of laser head end 907 by the flat head screw 915 of M3；Wherein: small reflector microscope base 917 adopts counter sink structural design；Before tightening flat head screw 915, at flat head screw 915 screw thread place, the faying face place of small reflector microscope base 917 and the afterbody of laser head end 907 be coated with one layer of ultra-violet curing glue, after tightening screw, put into solidification 30s in ultra-violet curing case, faying face is sealed, prevent in the laser impact intensified course of processing, have water to enter laser head internal damage eyeglass.
The small reflector 914 being sized to 10mm × 9mm × 2mm is embedded in the groove being sized to 10mm × 9mm × 2mm on small reflector microscope base 917.Wherein, small reflector: plating highly reflecting films, reflectance coating R > 99.81064nm, damage threshold is pulse 25J/cm2、10ns、2Hz；Angle of incidence is α=16 ± 2 °, and wavelength 532nm and 1064nm laser reflectance thereon all can reach more than 99.5%.
Little focus lamp 912 is fixed on light-emitting window 918 place of the end 907 of laser head by lock screw B913, adopts the mode of shaft shoulder location to position；Wherein: before tightening lock screw B913, at lock screw B913 screw thread place, the faying face place at little focus lamp 912 edge and laser head end 907 light-emitting window 918 place be coated with one layer of ultra-violet curing glue, after tightening lock screw B913, put into solidification 30s in ultra-violet curing case, faying face is sealed, prevent in the laser impact intensified course of processing, have water to enter laser head internal damage eyeglass；The lens damage threshold value of little focus lamp 912: pulse 25J/cm2, 10ns, 2Hz, wavelength 532nm and 1064nm laser absorbance thereon all can reach more than 99.5%.
Big focus lamp 511 is fixed on optical table 515 by mirror holder.Wherein: all adopt 4 dimension guiding mechanisms for big focus lamp 511 is fixed on its regulating mechanism of the mirror holder on optical table 515, there is locking function, moving horizontally and the rotation of both direction of both direction can be realized such that it is able to adjust laser beam and just vertically pass from the center of big focus lamp；The lens damage threshold value of big focus lamp 511: pulse 25J/cm2, 10ns, 2Hz, wavelength 532nm and 1064nm laser absorbance thereon all can reach more than 99.5%.
The diameter of little focus lamp 912 is 10mm, and focal length is 10mm, and thickness is 7mm.
The diameter of big focus lamp 511 is 50mm, and focal length is 1300mm, and thickness is 4mm.
Swing arm 906 is arranged on numerical control rotating platform 905, and by automatically controlling 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.
Laser head end 907 end be sized to 23 × 21 × 19mm, it is ensured that it moves freely between blade, and blade collisionless.
When the laser beam entrance laser head having beam diameter < 27mm, wavelength to be 1064nm, angle of divergence < 3mrad, pulsewidth 8-25ns, frequency 0-5Hz, it is about the circular light spot of 3mm, flat-top distribution forming diameter from laser head light hole 2mm place.
Above-mentioned laser head in use, first passes through and automatically controls or the mode of Non-follow control makes numerical control rotating platform 905 rotary work, swing arm 906 and laser head end 907 are entered working position, namely allows laser head enter operating 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 big focus lamp of 1300mm, big focus lamp focuses of the light beam on the small reflector being sized to 10mm × 9mm × 2mm, by the reflection of small reflector, it is 10mm that laser beam enters diameter, focal length is in the little focus lamp of 10mm, blade surface is focused the beam onto by little focus lamp, blade is 2mm from eyeglass outer surface, form diameter at blade surface and be about 3mm, the circular light spot of flat-top distribution.Thus realizing blisk is covered the laser-impact shock peening at position.
Aero-engine blisk can be covered position and carry out laser impact intensified by above-mentioned laser head, solves aero-engine blisk and covers the difficult problem that position can not be processed；Compact structure, safe and reliable, Working position is easy to adjust；The laser beam homogeneous of output, it is ensured that crudy uniformly reliable；Easy to use, working (machining) efficiency is high.
The structure of the overall light path system of device therefor is specific as follows:
As shown in Figure 25-29, the laser impact intensified light path system in blisk mono-/bis-face includes: the light path one being arranged on optical table 515 switches slide unit 501 with light path two, light path three switches slide unit 514 and light-emitting window slide unit 517 with light path four；It is arranged on the internal nc sliding table 521 for light path switching of laser instrument 102；It is arranged on light path three turntable 509 on optical table 515 and light path one turntable 506；It is arranged on the light path three on optical table 515 and light path four verifies slide unit 526 and light path one verifies slide unit 531 with light path two；It is arranged on the light path two-mirror 502 on optical table 515, light path four reflecting mirror 512, reflecting mirror A516 and reflecting mirror B523；It is arranged on light path one focus lamp 505 on optical table 515, light path three focus lamp 511, light path two focus lamp 525 and light path four focus lamp 532, the even smooth eyeglass 524 of light path two being arranged on optical table 515 and the even smooth eyeglass 533 of light path four, described light path two focus lamp 525 and the even smooth eyeglass 524 of light path two form the even smooth focus lamp group 504 of light path two, described light path four focus lamp 532 and the even smooth eyeglass 533 of light path four and form the even smooth focus lamp group 510 of light path four；It is separately mounted to light path one swing arm 528 on light path one turntable 506 and light path three turntable 509 and light path three swing arm 529；It is separately mounted to light path one small reflector 507 and light path three small reflector 508 of light path one swing arm 528 end and light path three swing arm 529 end；It is separately mounted to light path one and light path two and switches light path one reflecting mirror 503 and light path three reflecting mirror 513 that slide unit 501 and light path three and light path four switch on slide unit 514；It is arranged on the reflecting mirror C518 on light-emitting window slide unit 517 and reflecting mirror D522；It is arranged on the reflecting mirror E520 on nc sliding table 521；It is arranged on the light combination mirror 537 within laser instrument 102；It is separately mounted to light path three and light path four verify the light path three that slide unit 526 and light path one and light path two verify on slide unit 531 and verify energy meter 527 with light path four and light path one verifies energy meter 530 with light path two；It is arranged on the protective plate 534 on optical table 515, protective cover 535 and light pipe A903.The motor of nc sliding table is controlled by host computer.
Described protective plate 534 is that light path three and light path four verify energy meter 527, light path one and light path two verify energy meter 530, light path three and verify slide unit 526 with light path four and light path one verifies slide unit 531 with light path two for preventing the water in the course of processing to be splashed to；Described protective cover 535 and light pipe A903 are used to prevent the optical glass in the contamination by dust light path system in workshop.
Described reflecting mirror E520 is under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to slide on nc sliding table 521；Laser instrument arranges light-emitting window A and light-emitting window B；When reflecting mirror E520 is in light-emitting window A dead ahead, laser beam A is reflected mirror E520 and reflexes to light combination mirror 537, and the laser reflected then through light combination mirror 537 exports by light hole B with laser beam B；When reflecting mirror E520 is in the position between light-emitting window A and light-emitting window B, laser beam A and laser beam B export from light-emitting window A and light-emitting window B respectively.
Described reflecting mirror C518 and reflecting mirror D522 is under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to slide on light-emitting window slide unit 517 simultaneously；When A light-emitting window and B light hole go out light simultaneously, when reflecting mirror C518 and reflecting mirror D522 is in the dead astern of light hole A and light hole B respectively, the laser of A light hole output is reflected the reflection of mirror C518 and can reflex on the reflecting mirror A516 of reflecting mirror C518 left, and the laser of B light hole output is reflected the reflection of mirror D522 and can reflex on the reflecting mirror B523 of reflecting mirror D522 right；When only B light hole goes out light, when reflecting mirror C518 and reflecting mirror D522 is in the rear of light hole A and light hole B respectively, the laser of B light hole output is reflected the reflection of mirror D522 and can reflex on the reflecting mirror B523 of reflecting mirror D522 right；When only B light hole goes out light, when only reflecting mirror C518 is in the rear of light hole B, the laser of B light hole output is reflected the reflection of mirror C518 and can reflex on the reflecting mirror A516 of reflecting mirror C518 left.
Described light path one reflecting mirror 503 is under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to switches in light path one and light path two and slides on slide unit 501；When reflecting mirror B523 has laser beam to reflect, when light path one reflecting mirror 3 is in the dead astern of reflecting mirror B523 reflected light path, reflecting mirror B523 reflection carrys out laser on light path 501 focus lamp 505 that light path one reflecting mirror 503 reflexes to light path one reflecting mirror 503 left；When reflecting mirror B523 has laser beam to reflect, when light path one reflecting mirror 503 is not at the dead astern of reflecting mirror B523 reflected light path, reflecting mirror B523 reflection carrys out laser and reflexes in the even smooth focus lamp group 504 of light path two of light path two-mirror 502 left through light path two-mirror 502.
Described light path three reflecting mirror 513 is under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to switches in light path three and light path four and slides on slide unit 514；When reflecting mirror A516 has laser beam to reflect, when light path three reflecting mirror 513 is in the dead astern of reflecting mirror A516 reflected light path, the laser that reflecting mirror A516 reflection comes is on light path three focus lamp 511 that light path three reflecting mirror 513 reflexes to light path three reflecting mirror 513 right；When reflecting mirror A516 has laser beam to reflect, when light path three reflecting mirror 513 is not at the dead astern of reflecting mirror A516 reflected light path, the laser that reflecting mirror A516 reflection comes reflexes in the even smooth focus lamp group 510 of light path four of light path four reflecting mirror 512 right through light path four reflecting mirror 512.
The knob that described light path one swing arm 528 is under the driving of servomotor or manual rotation servomotor is other, it is possible to the axis around light path one turntable 506 rotates；When light path one focus lamp 505 has laser to export, when the front-left being exactly in light path one focus lamp 505 output light path to light path one small reflector 507 is put in light path one swing arm 528, the laser-bounce that exports through light path one focus lamp 505 to surface of the work, is formed the circular light spot of the uniform intensity that diameter is 2-5mm by light path one small reflector 507；When light requirement road one does not work, light path one swing arm 528 is rotated clockwise on optical table.
The knob that described light path three swing arm 529 is under the driving of servomotor or manual rotation servomotor is other, it is possible to the axis around light path three turntable 509 rotates；When light path three focus lamp 511 has laser to export, when the front-right being exactly in light path three focus lamp 511 output light path to light path three small reflector 508 is put in light path three swing arm 529, the laser-bounce that exports through light path three focus lamp 511 to surface of the work, is formed the circular light spot of the uniform intensity that diameter is 2-5mm by light path three small reflector 508；When light requirement road three does not work, light path three swing arm 529 rotates counterclockwise on optical table.
When the even smooth focus lamp group 504 of light path two has laser beam to input, the laser of light path two focus lamp 525 output is irradiated to surface of the work, forms the square focus spot of the uniform intensity that the length of side is 2-5mm.
When the even smooth focus lamp group 510 of light path four has laser beam to input, the laser of light path four focus lamp 532 output is irradiated to surface of the work, forms the square focus spot of the uniform intensity that the length of side is 2-5mm.
Described light path one and light path two verify energy meter 530 under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to verify in light path one and light path two and slide on slide unit 531；Light path one swing arm 528 and light path three swing arm 529 are in off position, when verifying the integrity of light path one, light path one and light path two verify energy meter 530 and move to the dead astern of light path one focus lamp 505, select Output of laser from light path one, the energy of optical path one output, contrasts with the energy of laser instrument output；When verifying the integrity of light path two, light path one and light path two verify energy meter 530 and move to the dead astern of light path two focus lamp 525, select Output of laser from light path two, the energy of optical path two output, contrast with the energy of laser instrument output；Adding man-hour when workpiece carries out shock peening, light path one and light path two verify energy meter 530 and move to the place not blocking light path.
Described light path three and light path four verify energy meter 527 under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to verify in light path three and light path four and slide on slide unit 526；Light path one swing arm 528 and light path three swing arm 529 are in off position, when verifying the integrity of light path three, light path three and light path four verify energy meter 502 and move to the dead astern of light path three focus lamp 511, select Output of laser from light path three, the energy of optical path three output, contrasts with the energy of laser instrument output；When verifying the integrity of light path four, light path three and light path four verify energy meter 527 and move to the dead astern of light path four focus lamp 532, select Output of laser from light path four, the energy of optical path four output, contrast with the energy of laser instrument output；Adding man-hour when workpiece carries out shock peening, light path one and light path two verify energy meter 527 and move to the place not blocking light path.
When only being gone out light by light-emitting window B, be 3-20J, pulsewidth it is 8-25ns, beam diameter < 27mm when input wavelength is 1064nm, single pulse energy, during the laser beam of angle of divergence < 3mrad, light path 1 or light path 3 409 can Output of laser spot diameter be the circular light spot of uniform intensity of 2-5mm；When only being gone out light by light-emitting window B, be 3-20J, pulsewidth it is 8-25ns, beam diameter < 27mm when input wavelength is 1064nm, single pulse energy, during the laser beam of angle of divergence < 3mrad, light path 2 414 or light path 4 410 can Output of laser hot spot be the square focus spot of uniform intensity of length of side 2-5mm.
When light-emitting window A and light-emitting window B goes out light simultaneously, be 3-20J, pulsewidth it is 8-25ns, beam diameter < 27mm when input wavelength is 1064nm, single pulse energy, during the laser beam of angle of divergence < 3mrad, light path 1 and light path 3 409 can Output of laser spot diameter be the circular light spot of uniform intensity of 2-5mm；When light-emitting window A and light-emitting window B goes out light simultaneously, be 3-20J, pulsewidth it is 8-25ns, beam diameter < 27mm when input wavelength is 1064nm, single pulse energy, during the laser beam of angle of divergence < 3mrad, light path 2 414 and light path 4 410 can Output of laser hot spot be the square focus spot of uniform intensity of length of side 2-5mm.
Be 3-20J, pulsewidth it is 8-25ns, beam diameter < 27mm when input wavelength is 1064nm, single pulse energy, during the laser beam of angle of divergence < 3mrad, the energy loss < 6% of light path one and light path three；Be 3-20J, pulsewidth it is 8-25ns, beam diameter < 27mm when input wavelength is 1064nm, single pulse energy, during the laser beam of angle of divergence < 3mrad, the energy loss < 10% of light path two and light path four.
The light path system simple in construction of the present invention, use, while improving production efficiency, it is ensured that the uniformity of laser impact intensified quality and stability；Four set light paths of design, it is possible to as required, arbitrarily select a set of light path or two set light path work, it is possible to adapt to the work pieces process of various structures shape；The square focus spot provided is for the workpiece of the processing simple in construction such as plane, especially suitable, facilitate path planning meanwhile, it is capable to ensure that crudy is uniform and stable, efficiency is higher simultaneously；The machining area that the circular light spot provided is complicated for processing structure, blocked by other positions of workpiece is especially suitable so that difficult processing, the region that can not process become able to processed；The light path verification provided, it is possible to check the integrity of light path fast and effectively, it is possible to quickly whether diagnosis light path system runs normal；The protective plate of offer, protective cover, light pipe can effectively prevent water, contamination by dust energy meter and eyeglass, thus ensure that the operation that equipment is steady in a long-term.
Utilize the said equipment that aero-engine blisk is carried out laser impact intensified method to be: first blisk is arranged on the ring flange of track robot end by fixture by the method, then light path system being set as successively, light path 3 409 works, light path 1 works, light path 4 410 works, light path 2 414 works, light path 4 410 work and light path 2 414 work, blade back trailing region 403 to integrated impeller blade respectively successively, leaf basin front edge area 406, leaf basin trailing region 404, blade back front edge area 401, leaf basin tip region 405 and blade back tip region 402 carry out laser impact intensified.The method specifically comprises the following steps that
(1) feeding and patch absorbed layer: blisk 107 is arranged on by fixture on the ring flange of track robot 106 end at upper material level (upper material level refers to and blisk is installed to track robot and pastes at machining area and remove the position of absorbed layer), paste in blade back trailing region 403 thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer；
(2) enter processing and prepare some P0Be switched to light path 3 409: track robot 106 with leaf dish 107 move to processing prepare some a P0, light path system 103 is switched to light path 3 409 work；
(3) enter blade back trailing edge 403 and focus on Working position: track robot 106 moves to blade back trailing edge 403 with leaf dish 107 and focuses on Working position; this is owing to focused light passages swing arm structure is complicated; laser head is stepped between blade, arrive blade back trailing edge 403 and focus on Working position；
(4) blade back trailing edge 403 focuses on processing: starts to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back trailing edge 403, after processing a blade, automatically switches to next blade and be processed, till machining；
(5) return to processing and prepare some P0With 3 409 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P0, the light path 3 409 of light path system 103 returns to original position；
(6) track robot returns to material level patch absorbed layer: track robot 106 is moved to upper material level; the black tape of blade back trailing region 403 remnants is clean with the erasing of acetone cotton balls, paste in leaf basin front edge area 406 thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer；
(7) enter processing and prepare some P0Be switched to light path 1: track robot 106 with leaf dish 107 move to processing prepare some a P0, light path system 103 is switched to light path 1 work；
(8) enter leaf basin leading edge 406 and focus on Working position: track robot 106 moves to leaf basin leading edge 406 with leaf dish 107 and focuses on Working position; this is owing to focused light passages swing arm structure is complicated; laser head is stepped between blade, arrive leaf basin leading edge 406 and focus on Working position；
(9) leaf basin leading edge 406 focuses on processing: starts to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin leading edge 406, after processing a blade, automatically switches to next blade and be processed, till machining；
(10) return to processing and prepare some P0With one 415 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P0, the light path 1 of light path system 103 returns to original position；
(11) track robot returns to material level patch absorbed layer: track robot 106 is moved to upper material level; the black tape of leaf basin leading edge 406 remnants is clean with the erasing of acetone cotton balls, paste in leaf basin trailing region 404 thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer；
(12) enter processing and prepare some P0Be switched to light path 4 410: track robot 106 with leaf dish 107 move to processing prepare some a P0, light path system 103 is switched to light path 4 410 work；
(13) the even smooth Working position of leaf basin trailing edge 404 is entered: track robot 106 moves to the even smooth Working position of leaf basin trailing edge 404 with leaf dish 107；
(14) the even light processing of leaf basin trailing edge 404: start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin trailing edge 404, after processing a blade, automatically switch to next blade and be processed, till machining；
(15) return to processing and prepare some P0With 4 410 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P0, the light path 4 410 of light path system 103 returns to original position；
(16) track robot returns to material level patch absorbed layer: track robot 106 is moved to upper material level; the black tape of leaf basin trailing edge 404 remnants is clean with the erasing of acetone cotton balls, paste in blade back front edge area 401 thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer；
(17) enter processing and prepare some P0Be switched to light path 2 414: track robot 106 with leaf dish 107 move to processing prepare some a P0, light path system 103 is switched to light path 2 414 work；
(18) the even smooth Working position of blade back leading edge 401 is entered: track robot 106 moves to the even smooth Working position of blade back leading edge 401 with leaf dish 107；
(19) the even light processing of blade back leading edge 401: start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back leading edge 401, after processing a blade, automatically switch to next blade and be processed, till machining；
(20) return to processing and prepare some P0With 2 414 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P0, the light path 2 414 of light path system 103 returns to original position；
(21) track robot returns to material level patch absorbed layer: track robot 106 is moved to upper material level; the black tape of blade back leading edge 401 remnants is clean with the erasing of acetone cotton balls, leaf basin tip region 405 paste thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer；
(22) enter processing and prepare some P0Be switched to light path 4 410: track robot 106 with leaf dish 107 move to processing prepare some a P0, light path system 103 is switched to light path 4 410 work；
(23) the even smooth Working position of leaf basin blade tip 405 is entered: track robot 106 moves to the even smooth Working position of leaf basin blade tip 405 with leaf dish 107；
(24) the even light processing of leaf basin blade tip 405: start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin blade tip 405, after processing a blade, automatically switch to next blade and be processed, till machining；
(25) return to processing and prepare some P0With 4 410 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P0, the light path 4 410 of light path system 103 returns to original position；
(26) track robot returns to material level patch absorbed layer: track robot 106 is moved to upper material level; the black tape of leaf basin blade tip 405 remnants is clean with the erasing of acetone cotton balls, blade back tip region 402 paste thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer；
(27) enter processing and prepare some P0Be switched to light path 2 414: track robot 106 with leaf dish 107 move to processing prepare some a P0, light path system 103 is switched to light path 2 414 work；
(28) the even smooth Working position of blade back blade tip 402 is entered: track robot 106 moves to the even smooth Working position of blade back blade tip 402 with leaf dish 107；
(29) the even light processing of blade back blade tip 402: start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back blade tip 402, after processing a blade, automatically switch to next blade and be processed, till machining；
(30) return to processing and prepare some P0With 2 414 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P0, the light path 2 414 of light path system 103 returns to original position；
(31) track robot returns to material level blanking: track robot 106 is moved to upper material level, and the black tape of blade back blade tip 402 remnants is clean with the erasing of acetone cotton balls, pulls down leaf dish 107, completes processing.
It is carried out before leaf dish is arranged in track robot, dedusting: first clean up with acetone, remove the greasy dirt on surface, be then placed in Airshower chamber apoplexy and drench 5min, remove the dust on leaf dish 107 surface.
Described processing prepares some P0Refer to that blisk is in the work pieces process position of light path system.
Described focusing Working position refers to that laser head is between adjacent blade.
The initial position of light path system 103 is defaulted as the duty being in light path 2 414, described in return to original position and namely refer to return to initial position.
nullDescribed light path system 103 is switched to light path 3 409 work and refers to: when light path one swing arm 528 is not located at operating position，When reflecting mirror E520 is in A light-emitting window dead ahead，Laser beam A is reflected mirror E520 reflection，To light combination mirror 537，The laser reflected then through light combination mirror 537 exports by light hole B with laser beam B，Simultaneously when reflecting mirror C518 is in the rear of light hole B，The laser of B light hole output is reflected the reflection of mirror C518 and can reflex on the reflecting mirror A516 of reflecting mirror C518 left，Simultaneously when light path three reflecting mirror 513 is in the dead astern of reflecting mirror A516 reflected light path，Reflecting mirror A516 reflection carrys out laser and reflexes on light path three focus lamp 511 through light path three reflecting mirror 513，When the front-right being exactly in light path three focus lamp 511 output light path to light path three small reflector 508 is put in light path three swing arm 529，Light path three small reflector 508 is by the laser-bounce that exports through light path three focus lamp 511 to surface of the work，Form the circular light spot of the uniform intensity that diameter is 2-5mm，The blade back trailing region 403 of processing aero-engine leaf dish；
nullDescribed light path system 103 is switched to light path 1 work and refers to: when light path three swing arm 529 is not located at operating position，When reflecting mirror E520 is in light-emitting window A dead ahead，Laser beam A is reflected mirror E520 reflection，To light combination mirror 537，The laser reflected then through light combination mirror 537 exports by light hole B with laser beam B，Simultaneously when reflecting mirror C518 and reflecting mirror D522 is in the dead astern of light hole A and light hole B respectively，The laser of light hole B output is reflected the reflective of mirror D522 to the reflecting mirror B523 of reflecting mirror D522 right，Simultaneously when light path one reflecting mirror 503 is in the dead astern of reflecting mirror B523 reflected light path，Reflecting mirror B523 reflection carrys out laser and reflexes on light path one focus lamp 505 through light path one reflecting mirror 503，Simultaneously when the front-left being exactly in light path one focus lamp 505 output light path to light path one small reflector 507 is put in light path one swing arm 528，Light path one small reflector 507 is by the laser-bounce that exports through light path one focus lamp 505 to surface of the work，Form the circular light spot of the uniform intensity that diameter is 2-5mm，The leaf basin front edge area 406 of processing aero-engine leaf dish；
nullDescribed light path system 103 is switched to light path 4 410 work and refers to: when light path one swing arm 528 and light path three swing arm 529 are all not located at operating position，When reflecting mirror E520 is in A light-emitting window dead ahead，Laser beam A is reflected mirror E520 reflection，To light combination mirror 537，The laser reflected then through light combination mirror 537 exports by light hole B with laser beam B，Simultaneously when reflecting mirror C518 is in the rear of light hole B，The laser of B light hole output is reflected the reflection of mirror C518 and can reflex on the reflecting mirror A516 of reflecting mirror C518 left，Simultaneously when light path three reflecting mirror 513 is not at the dead astern of reflecting mirror A516 reflected light path，Reflecting mirror A516 reflection carrys out laser and reflexes in the even smooth focus lamp group 510 of light path four through light path four reflecting mirror 512，Form the square focus spot of the uniform intensity of length of side 2-5mm，The leaf basin trailing region 404 of processing aero-engine leaf dish and leaf basin tip region 405；
nullDescribed light path system 103 is switched to light path 2 414 work and refers to: when light path one swing arm 528 and light path three swing arm 529 are all not located at operating position，When reflecting mirror E520 is in light-emitting window A dead ahead，Laser beam A is reflected mirror E520 reflection，To light combination mirror 537，The laser reflected then through light combination mirror 537 exports by light hole B with laser beam B，Simultaneously when reflecting mirror C518 and reflecting mirror D522 is in the rear of light hole A and light hole B respectively，The laser of B light hole output is reflected the reflective of mirror D522 to the reflecting mirror B523 of reflecting mirror D522 front-right，Simultaneously when light path one reflecting mirror 503 is not at the dead astern of reflecting mirror B523 reflected light path，Reflecting mirror B523 reflection carrys out laser and reflexes in the even smooth focus lamp group 504 of light path two through light path two-mirror 502，Form the square focus spot of the uniform intensity of length of side 2-5mm，The blade back front edge area 401 of processing aero-engine leaf dish and blade back tip region 402.
Blisk is carried out laser impact intensified before, first the light path 3 409 of light path system, light path 4 410, light path 2 414 and light path 1 are verified, it is ensured that all can normal operation.Concrete checking procedure is as follows:
(1) when reflecting mirror E520 is in A light-emitting window dead ahead, laser beam is reflected mirror E520 reflection, laser beam will all be exported by B light hole, simultaneously when reflecting mirror C518 and reflecting mirror D522 is in the rear of light hole A and light hole B respectively, the laser of B light hole output is reflected the reflective of mirror D522 to the reflecting mirror B523 of reflecting mirror D522 right, simultaneously when light path one reflecting mirror 3 is in the dead astern of reflecting mirror B523 reflected light path, reflecting mirror B523 reflection carrys out laser and reflexes on light path one focus lamp 505 through light path one reflecting mirror 503, light path one swing arm 528 simultaneously and light path three swing arm 529 are not located at operating position, laser beam irradiation verifies in energy meter 530 to light path one and light path two, light path one is verified.
null(2) when reflecting mirror E520 is in A light-emitting window dead ahead，Laser beam is reflected mirror E520 reflection，Laser beam will all be exported by B light hole，Simultaneously when reflecting mirror C518 and reflecting mirror D522 is in the dead astern of light hole A and light hole B respectively，The laser of B light hole output is reflected the reflective of mirror D522 to the reflecting mirror B523 of reflecting mirror D522 right，Simultaneously when light path one reflecting mirror 503 is not at the dead astern of reflecting mirror B523 reflected light path，Reflecting mirror B523 reflection carrys out laser and reflexes in the even smooth focus lamp group 504 of light path two through light path two-mirror 502，Light path one swing arm 528 simultaneously and light path three swing arm 529 are not located at operating position，Laser beam irradiation verifies in energy meter 530 to light path one and light path two，Light path two is verified.
(3) when reflecting mirror E520 is in A light-emitting window dead ahead, laser beam is reflected mirror E520 reflection, laser beam will all be exported by B light hole, simultaneously when reflecting mirror C518 is in the dead astern of light hole B, the laser of B light hole output is reflected the reflection of mirror C518 and can reflex on the reflecting mirror A516 of reflecting mirror C518 left, simultaneously when light path three reflecting mirror 513 is in the dead astern of reflecting mirror A516 reflected light path, reflecting mirror A516 reflection carrys out laser and reflexes on light path three focus lamp 511 through light path three reflecting mirror 513, light path one swing arm 528 simultaneously and light path three swing arm 529 are not located at operating position, laser beam irradiation verifies in energy meter 527 to light path three and light path four, light path three is verified.
(4) when reflecting mirror E520 is in A light-emitting window dead ahead, laser beam is reflected mirror E520 reflection, laser beam will all be exported by B light hole, simultaneously when reflecting mirror C518 is in the rear of light hole B, the laser of B light hole output is reflected the reflection of mirror C518 and can reflex on the reflecting mirror A516 of reflecting mirror C518 left, simultaneously when light path three reflecting mirror 513 is not at the dead astern of reflecting mirror A16 reflected light path, reflecting mirror A516 reflection carrys out laser and reflexes in the even smooth focus lamp group 510 of light path four through light path four reflecting mirror 512, light path one swing arm 528 simultaneously and light path three swing arm 529 are not located at operating position, laser beam irradiation verifies in energy meter 527 to light path three and light path four, light path four is verified.
Laser beam A and laser beam B are input wavelength to be 1064nm, single pulse energy be 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, now light path three (9) and light path one (15) output single pulse energy 6-10J, pulsewidth 15-20ns, spot diameter are sized to the circular laser beam of 3mm, light path four (10) and the square laser bundle that light path two (14) output single pulse energy 7-10J, pulsewidth 15-20ns, spot size are length of side 3mm, as shown in Figure 31-32.
In laser impact intensified process, adopt deionized water as restraint layer；Deionization resistivity of water is 18,000,000, and the thickness of restraint layer is 1-2mm, and thickness is uniform.The repetitive positioning accuracy of described track robot is ± 0.09mm.Described laser impact intensified mode adopts track robot to move, and laser-impact mode once is processed, and namely pointwise is processed.Described laser impact intensified in, the overlapping rate of circular light spot is 20%-30%, and the overlapping rate of square focus spot is 5%-15%.
The territory, Laser Shock Processing of described blisk is the region in blade back leading edge 12mm, region in blade back blade tip 12mm, region in blade back trailing edge 12mm, region in leaf basin trailing edge 12mm, the region of leaf basin blade tip 12mm, the region of leaf basin leading edge 12mm, i.e. regional extent in blade periphery 12mm, base region is not processed, as shown in figure 30.
Described desired trajectory refers to: blisk laser impact intensified, machining area for each leading edge and trailing edge, the precedence of shock peening is: first process from blade root direction to blade tip direction in edge, then offset distance to a declared goal to blade interior to process from blade root direction to blade tip direction again, reciprocal 4 times altogether；For the machining area of each blade tip, the precedence of shock peening is: first process from leading edge direction to trailing edge direction at blade tip place, then offsets distance to a declared goal to blade interior and processes to trailing edge direction in the past direction, reciprocal 4 times altogether；Described distance to a declared goal refers to that the overlapping rate according to circular light spot or square focus spot offsets to blade interior.
Described blisk laser impact intensified, for the last processing together near blade interior, energy is lower by 20% than the energy used by front 3 roads.
Embodiment 1
Material for test: TC17 titanium alloy blisk.
The pretreatment of workpiece: first clean up with acetone, removes the greasy dirt on surface, is then placed in Airshower chamber apoplexy and drenches 5min, removes the dust on leaf dish (13) surface.
Laser impact intensified technological parameter: 1. restraint layer hydromining deionized water, deionization resistivity of water reaches 18,000,000, and the thickness of restraint layer is 1mm, and thickness is uniform；2. left focused light passages and right focused light passages output single pulse energy 6J, pulsewidth 15ns, circular light spot diameter are 3mm, and left even light path and the even light path output single pulse energy 7J in the right side, pulsewidth 15ns, the square focus spot length of side are 3mm；The overlapping rate of circular light spot is 30%, and the overlapping rate of square focus spot is 15%.
Embodiment 2
The pretreatment of workpiece: first clean up with acetone, removes the greasy dirt on surface, is then placed in Airshower chamber apoplexy and drenches 5min, removes the dust on leaf dish (13) surface.
Laser impact intensified technological parameter: 1. restraint layer hydromining deionized water, deionization resistivity of water reaches 18,000,000, and the thickness of restraint layer is 2mm, and thickness is uniform；2. left focused light passages and right focused light passages output single pulse energy 10J, pulsewidth 120ns, circular light spot diameter are 3mm, and left even light path and the even light path output single pulse energy 10J in the right side, pulsewidth 20ns, the square focus spot length of side are 3mm；The overlapping rate of circular light spot is 20%, and the overlapping rate of square focus spot is 5%.
Embodiment 3
The pretreatment of workpiece: first clean up with acetone, removes the greasy dirt on surface, is then placed in Airshower chamber apoplexy and drenches 5min, removes the dust on leaf dish (13) surface.
Laser impact intensified technological parameter: 1. restraint layer hydromining deionized water, deionization resistivity of water reaches 18,000,000, and the thickness of restraint layer is 1.5mm, and thickness is uniform；2. left focused light passages and right focused light passages output single pulse energy 8J, pulsewidth 18ns, circular light spot diameter are 3mm, and left even light path and the even light path output single pulse energy 9J in the right side, pulsewidth 17ns, the square focus spot length of side are 3mm；The overlapping rate of circular light spot is 24%, and the overlapping rate of square focus spot is 8%.
The mechanical property of the laser impact intensified front and back of above-described embodiment 1-3 blisk is as shown in table 1.
The mechanical property of the laser impact intensified front and back of table 1 blisk

Claims (13)

1. a blisk laser shock peening method, it is characterized in that: blisk (107) is first arranged on the ring flange of track robot end by fixture by the method, then light path system (103) is set as that light path three (409) works successively, light path one (415) works, light path four (410) works, light path two (414) works, light path four (410) work and light path two (414) work, blade back trailing region (403) to integrated impeller blade respectively successively, leaf basin front edge area (406), leaf basin trailing region (404), blade back front edge area (401), leaf basin tip region (405) and blade back tip region (402) carry out laser impact intensified；
The method specifically includes following steps:
(1) blade back trailing region (403) processing: light path system (103) is switched to light path three (409) work; track robot (106) moves with leaf dish (107); start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back trailing region (403); after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(2) leaf basin front edge area (406) processing: light path system (103) is switched to light path one (415) work; track robot (106) moves with leaf dish (107); start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin front edge area (406); after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(3) leaf basin trailing region (404) processing: light path system (103) is switched to light path four (410) work; track robot (106) moves with leaf dish (107); start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin trailing region (404); after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(4) blade back front edge area (401) processing: light path system (103) is switched to light path two (414) work; track robot (106) moves with leaf dish (107); start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back front edge area (401); after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(5) leaf basin tip region (405) processing: light path system (103) is switched to light path four (410) work; track robot (106) moves with leaf dish (107); start from the leading edge direction of leaf basin tip region (405) to process to trailing edge direction according to desired trajectory pointwise; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
(6) blade back tip region (402) processing: light path system (103) is switched to light path two (414) work; track robot (106) moves with leaf dish (107); start from the leading edge direction of blade back tip region (402) to process to trailing edge direction according to desired trajectory pointwise; after processing a blade; controlled to automatically switch to next blade by track robot to be processed, till machining；
Described light path system includes: the light path one being arranged on optical table (515) switches slide unit (501) with light path two, light path three switches slide unit (514) and light-emitting window slide unit (517) with light path four；It is arranged on the internal nc sliding table (521) for light path switching of laser instrument (102)；It is arranged on the light path three turntable (509) on optical table (515) and light path one turntable (506)；It is arranged on the light path three on optical table (515) and light path four verifies slide unit (526) and light path one verifies slide unit (531) with light path two；It is arranged on the light path two-mirror (502) on optical table (515), light path four reflecting mirror (512), reflecting mirror A (516) and reflecting mirror B (523)；It is arranged on the light path one focus lamp (505) on optical table (515), light path three focus lamp (511), light path two focus lamp (525) and light path four focus lamp (532), the even smooth eyeglass of the light path two (524) being arranged on optical table (515) and the even smooth eyeglass (533) of light path four, described light path two focus lamp (525) and the even smooth eyeglass of light path two (524) the composition even smooth focus lamp group (504) of light path two, described light path four focus lamp (532) and the even smooth eyeglass of light path four (533) the composition even smooth focus lamp group (510) of light path four；It is separately mounted to the light path one swing arm (528) in light path one turntable (506) and light path three turntable (509) and light path three swing arm (529)；It is separately mounted to light path one small reflector (507) and the light path three small reflector (508) of light path one swing arm (528) end and light path three swing arm (529) end；It is separately mounted to light path one and light path two switch slide unit (501) and light path three and light path four switches on slide unit (514) light path one reflecting mirror (503) and light path three reflecting mirror (513)；It is arranged on the reflecting mirror C (518) on light-emitting window slide unit (517) and reflecting mirror D (522)；It is arranged on the reflecting mirror E (520) on nc sliding table (521)；It is arranged on the light combination mirror (537) that laser instrument (102) is internal；It is separately mounted to light path three and light path four verify the light path three that slide unit (526) and light path one and light path two verify on slide unit (531) and verify energy meter (527) and light path one with light path four and light path two verifies energy meter (530)；It is arranged on the protective plate (534) on optical table (515), protective cover (535) and light pipe A (903)；Described reflecting mirror E (520) is under the driving of servomotor or the knob of manual rotation servomotor rear end, it is possible to slide nc sliding table (521) is upper；Laser instrument arranges light-emitting window A and light-emitting window B；When reflecting mirror E (520) is in light-emitting window A dead ahead, laser beam A is reflected mirror E (520) and reflexes to light combination mirror (537), and the laser reflected then through light combination mirror (537) exports by light-emitting window B with laser beam B；When reflecting mirror E (520) is in the position between light-emitting window A and light-emitting window B, laser beam A and laser beam B export from light-emitting window A and light-emitting window B respectively.
null2. the blisk laser shock peening method described in claim 1，It is characterized in that: described light path system (103) is switched to light path three (409) work and refers to: when light path one swing arm (528) is not located at operating position，When reflecting mirror E (520) is in light-emitting window A dead ahead，Laser beam A is reflected mirror E (520) reflection，To light combination mirror (537)，The laser reflected then through light combination mirror (537) exports by light-emitting window B with laser beam B，Simultaneously when reflecting mirror C (518) is in the rear of light-emitting window B，The laser of light-emitting window B output is reflected the reflection of mirror C (518) and can reflex on the reflecting mirror A (516) of reflecting mirror C (518) left，Simultaneously when light path three reflecting mirror (513) is in the dead astern of reflecting mirror A (516) reflected light path，Reflecting mirror A (516) reflection carrys out laser and reflexes in light path three focus lamp (511) through light path three reflecting mirror (513)，When light path three swing arm (529) pendulum is exactly in the front-right of light path three focus lamp (511) output light path to light path three small reflector (508)，The laser-bounce that light path three small reflector (508) will export through light path three focus lamp (511) is to surface of the work，Form the circular light spot of the uniform intensity that diameter is 2-5mm，The blade back trailing region (403) of processing aero-engine leaf dish；
nullDescribed light path system (103) is switched to light path one (415) work and refers to: when light path three swing arm (529) is not located at operating position，When reflecting mirror E (520) is in light-emitting window A dead ahead，Laser beam A is reflected mirror E (520) reflection，To light combination mirror (537)，The laser reflected then through light combination mirror (537) exports by light-emitting window B with laser beam B，Simultaneously when reflecting mirror C (518) and reflecting mirror D (522) is in the dead astern of light-emitting window A and light-emitting window B respectively，The laser of light-emitting window B output is reflected the reflective of mirror D (522) to the reflecting mirror B (523) of reflecting mirror D (522) right，Simultaneously when light path one reflecting mirror (503) is in the dead astern of reflecting mirror B (523) reflected light path，Reflecting mirror B (523) reflection carrys out laser and reflexes in light path one focus lamp (505) through light path one reflecting mirror (503)，Simultaneously when light path one swing arm (528) puts the front-left being exactly in light path one focus lamp (505) output light path to light path one small reflector (507)，The laser-bounce that light path one small reflector (507) will export through light path one focus lamp (505) is to surface of the work，Form the circular light spot of the uniform intensity that diameter is 2-5mm，The leaf basin front edge area (406) of processing aero-engine leaf dish；
nullDescribed light path system (103) is switched to light path four (410) work and refers to: when light path one swing arm (528) and light path three swing arm (529) are all not located at operating position，When reflecting mirror E (520) is in light-emitting window A dead ahead，Laser beam A is reflected mirror E (520) reflection，To light combination mirror (537)，The laser reflected then through light combination mirror (537) exports by light-emitting window B with laser beam B，Simultaneously when reflecting mirror C (518) is in the rear of light-emitting window B，The laser of light-emitting window B output is reflected the reflection of mirror C (518) and can reflex on the reflecting mirror A (516) of reflecting mirror C (518) left，Simultaneously when light path three reflecting mirror (513) is not at the dead astern of reflecting mirror A (516) reflected light path，Reflecting mirror A (516) reflection carrys out laser and reflexes on the even smooth focus lamp group (510) of light path four through light path four reflecting mirror (512)，Form the square focus spot of the uniform intensity of length of side 2-5mm，The leaf basin trailing region (404) of processing aero-engine leaf dish and leaf basin tip region (405)；
nullDescribed light path system (103) is switched to light path two (414) work and refers to: when light path one swing arm (528) and light path three swing arm (529) are all not located at operating position，When reflecting mirror E (520) is in light-emitting window A dead ahead，Laser beam A is reflected mirror E (520) reflection，To light combination mirror (537)，The laser reflected then through light combination mirror (537) exports by light-emitting window B with laser beam B，Simultaneously when reflecting mirror C (518) and reflecting mirror D (522) is in the rear of light-emitting window A and light-emitting window B respectively，The laser of light-emitting window B output is reflected the reflective of mirror D (522) to the reflecting mirror B (523) of reflecting mirror D (522) front-right，Simultaneously when light path one reflecting mirror (503) is not at the dead astern of reflecting mirror B (523) reflected light path，Reflecting mirror B (523) reflection carrys out laser and reflexes on the even smooth focus lamp group (504) of light path two through light path two-mirror (502)，Form the square focus spot of the uniform intensity of length of side 2-5mm，The blade back front edge area (401) of processing aero-engine leaf dish and blade back tip region (402).
3. the blisk laser shock peening method described in claim 2, it is characterized in that: blisk is carried out laser impact intensified before, first the light path three (409) of light path system, light path four (410), light path two (414) and light path one (415) are verified, it is ensured that all can normal operation.
4. the blisk laser shock peening method described in claim 1, it is characterized in that: before blisk regional is processed, first paste on region to be processed thickness be 100 μm, width be that the black tape of 14mm is as absorbed layer, after this region processing is completed, remove black tape thereon.
5. the blisk laser shock peening method described in claim 1, it is characterised in that: in described laser impact intensified process, adopt deionized water as restraint layer；Deionization resistivity of water is 18M Ω .cm, and the thickness of restraint layer is 1-2mm, and thickness is uniform.
6. the blisk laser shock peening method described in claim 2, it is characterized in that: laser beam A and laser beam B are input wavelength to be 1064nm, single pulse energy be 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, described light path three (409) and light path one (415) output single pulse energy 6-10J, pulsewidth 15-20ns, spot diameter are sized to the circular laser beam of 3mm.
7. the blisk laser shock peening method described in claim 2, it is characterized in that: laser beam A and laser beam B are input wavelength to be 1064nm, single pulse energy be 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, described light path four (410) and the square laser bundle that light path two (414) output single pulse energy 7-10J, pulsewidth 15-20ns, spot size are length of side 3mm.
8. the blisk laser shock peening method described in claim 1, it is characterised in that: the repetitive positioning accuracy of described track robot is ± 0.09mm.
9. the blisk laser shock peening method described in claim 1, it is characterised in that: described laser impact intensified mode adopts track robot to move, and laser-impact mode once is processed, and namely pointwise is processed.
10. the blisk laser shock peening method described in claim 2, it is characterised in that: described laser impact intensified in, the overlapping rate of circular light spot is 20%-30%, and the overlapping rate of square focus spot is 5%-15%.
11. the blisk laser shock peening method described in claim 10, it is characterized in that: the territory, Laser Shock Processing of described blisk is the region in blade back leading edge 12mm, region in blade back blade tip 12mm, region in blade back trailing edge 12mm, region in leaf basin trailing edge 12mm, the region of leaf basin blade tip 12mm, the region of leaf basin leading edge 12mm, i.e. regional extent in blade periphery 12mm, base region is not processed.
12. the blisk laser shock peening method described in claim 11, it is characterized in that: described desired trajectory refers to: blisk laser impact intensified, machining area for each leading edge and trailing edge, the precedence of shock peening is: first process from blade root direction to blade tip direction in edge, then offset distance to a declared goal to blade interior to process from blade root direction to blade tip direction again, reciprocal 4 times altogether；For the machining area of each blade tip, the precedence of shock peening is: first process from leading edge direction to trailing edge direction at blade tip place, then offsets distance to a declared goal to blade interior and processes from leading edge direction to trailing edge direction, reciprocal 4 times altogether；Described distance to a declared goal refers to that the overlapping rate according to circular light spot or square focus spot offsets to blade interior.
13. the blisk laser shock peening method described in claim 12, it is characterised in that: described blisk laser impact intensified, for the last processing together near blade interior, energy is lower by 20% than the energy used by front 3 roads.
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