CN103898297A

CN103898297A - Laser shock peening method of blisk

Info

Publication number: CN103898297A
Application number: CN201210568051.5A
Authority: CN
Inventors: 乔红超; 刘伟军; 赵吉宾; 于彦凤
Original assignee: Shenyang Institute of Automation of CAS
Current assignee: Shenyang Institute of Automation of CAS
Priority date: 2012-12-24
Filing date: 2012-12-24
Publication date: 2014-07-02
Anticipated expiration: 2032-12-24
Also published as: CN103898297B

Abstract

The invention discloses a laser shock peening method of a blisk. The method is below: first installing the blisk on a flange at the terminal of a trajectory robot through a fixture; then setting an optical system to a third optical path (9) working state, a first optical path (15) working state, a fourth optical path (10) working state, a second optical path (14) working state, the fourth optical path (10) working state and the second optical path (14) working state in order; and respectively conducting laser shock peening on a blade back trailing edge region (3), a blade basin leading edge region (6), a blade basin trailing edge region (4), a blade back leading edge region (1), a blade basin tip region (5) and a blade back tip region (2) of a blisk blade. The laser shock peening method provided by the invention is simple, and after laser shock peening, the blisk has residual pressure stress reaching above 300 MPa, high frequency vibration fatigue life increased by about 6-30 times, and little deformation of the workpiece.

Description

A kind of blisk laser shock peening method

Technical field

The present invention relates to be applied in aircraft 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 shockwave that utilizes intense laser beam to produce, can be greater than in the degree of depth workpiece surface generation compressive surfaces unrelieved stress of 1mm, improve anti-damage nargin and the fatigue property of blade, compared with the metal material surface such as cold extrusion, shot-peening strengthening means, there is noncontact, the outstanding advantages such as strong and strengthening effect is remarkable without heat affected zone, controllability.Anti-foreign matter destructiveness and fatigue property through laser impact intensified blade significantly promote, and when even having strengthened blade edge breach and being less than 3mm, its work-ing life is still suitable with intact not strengthening blade.

Blisk is designed to a part blade and wheel disc, replaces common blade tenon tooth and wheel disc chase mortise to add the syndeton of locking plate again, improved engine pneumatic efficiency, have an high regard for when reliability.Traditional intensifying technology of individual blade is shot peening strengthening, and shot peening strengthening effects on surface irregular component performance difficulty, easily causes the distortion of thin-wall part, and effects on surface roughness and size may exert an influence.

Laser impact intensified have a controllability, can strengthen the region of specifying on part, the present invention is directed to aircraft engine blisk and proposed a kind of laser shock peening method, form compressive stress layer at blade surface, can increase substantially the performance index such as antifatigue and tensile stress corrosion of aircraft engine leaf dish.Application of the present invention, for solving aircraft engine blisk FATIGUE FRACTURE PROBLEMS, improving its reliability will be significant.

Summary of the invention

The object of this invention is to provide a kind of blisk laser shock peening method for aircraft engine, this laser shock peening method is simple, and strengthening quality is good, workpiece deformation is less, production efficiency is high.

Technical scheme of the present invention is:

A kind of blisk laser shock peening method; first the method is arranged on blisk on track robot end's ring flange by fixture; then light path system is set as successively to light path three is worked, light path one is worked, light path four is worked, light path two is worked, light path four is worked and light path two work, the blade back trailing edge region to integrated impeller blade, leaf basin leading edge region, leaf basin trailing edge region, blade back leading edge region, leaf basin blade tip region and blade back blade tip region are carried out laser impact intensified respectively successively.Specifically comprise the steps:

(1) blade back trailing edge 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 in blade back trailing edge region, process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(2) leaf basin leading edge region 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 in leaf basin leading edge region, process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(3) leaf basin trailing edge 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 in leaf basin trailing edge region, process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(4) blade back leading edge 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 in blade back leading edge region, process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(5) leaf basin blade 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 in leaf basin blade tip region, process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(6) blade back blade 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 in blade back blade tip region; process after a blade; automatically switch to next blade by the control of track robot and process, until machine.

Described light path system comprises: be arranged on that light path on optical table one is switched slide unit with light path two, light path three is switched slide unit and light-emitting window slide unit with light path four; Be arranged on the nc sliding table that switch for light path laser apparatus inside; Be arranged on light path three turntables and light path one turntable on optical table; Be arranged on light path three and light path four verification slide units and light path one and light path two verification slide units on optical table; Be arranged on light path two-mirror, light path four speculums, speculum A and speculum B on optical table; Be arranged on light path one condensing lens, light path three condensing lenss, light path two condensing lenss and light path four condensing lenss on optical table, be arranged on the even light microscopic sheet of light path two and the even light microscopic sheet of light path four on optical table, the even smooth condensing lens group of the even light microscopic sheet composition light path two of described light path two condensing lenss and light path two, the even smooth condensing lens group of the even light microscopic sheet composition light path four of described light path four condensing lenss and light path four; Be arranged on respectively light path one swing arm and light path three swing arms on light path one turntable and light path three turntables; Be arranged on respectively light path one small reflector and light path three small reflectors of light path one swing arm end and light path three swing arm ends; Be arranged on respectively that light path one is switched slide unit with light path two and light path three is switched light path one speculum and light path three speculums on slide unit with light path four; Be arranged on speculum C and speculum D on light-emitting window slide unit; Be arranged on the speculum E on nc sliding table; Be arranged on the light combination mirror of laser apparatus inside; Be arranged on respectively light path three and light path four verification energy meters and light path one and light path two verification energy meters on light path three and light path four verification slide units and light path one and light path two verification slide units; Be arranged on protective shield, shield cap and light pipe on optical table.

Described speculum E under the driving of servomotor or the knob of manual rotation servomotor rear end, can slide on nc sliding table; Light-emitting window A and light-emitting window B are set on laser apparatus; In the time that speculum E is in light-emitting window A right on, laser beam A reflexes to light combination mirror through speculum E, then the laser reflecting through light combination mirror and laser beam B are exported by light hole B; In the time that speculum E is in the position between light-emitting window A and light-emitting window B, laser beam A and laser beam B are respectively from light-emitting window A and light-emitting window B output.

Described light path system is switched to light path three work and refers to: when light path one swing arm is not in working position, in the time that speculum E is in A light-emitting window right on, laser beam A reflects through speculum E, to light combination mirror, the laser reflecting through light combination mirror again and laser beam B are exported by light hole B, simultaneously in the time that speculum C is in the rear of light hole B, the laser of B light hole output can reflex to through the reflection of speculum C on the speculum A of speculum C left, simultaneously in the time that light path three speculums are in the right astern of speculum A reflected light path, speculum A reflects laser and reflexes on light path three condensing lenss through light path three speculums, light path three swing arms are put to light path three small reflectors just in time when the front-right in light path three condensing lens output light paths, light path three small reflectors by the laser reflection through light path three condensing lenss outputs to workpiece surface, the uniform circular light spot of light intensity that formation diameter is 2-5mm, the blade back trailing edge region of processing aircraft engine leaf dish,

Described light path system is switched to light path one work and refers to: when light path three swing arms are not in working position, in the time that speculum E is in light-emitting window A right on, laser beam A reflects through speculum E, to light combination mirror, the laser reflecting through light combination mirror again and laser beam B are exported by light hole B, simultaneously in the time that speculum C and speculum D are in respectively the right astern of light hole A and light hole B, the laser of light hole B output is on the reflective of the speculum D speculum B right-hand to speculum D, simultaneously in the time that light path one speculum is in the right astern of speculum B reflected light path, speculum B reflects laser and reflexes on light path one condensing lens through light path one speculum, simultaneously when light path one swing arm is put to light path one small reflector just in time when the front-left in light path one condensing lens output light path, light path one small reflector by the laser reflection through light path one condensing lens output to workpiece surface, the uniform circular light spot of light intensity that formation diameter is 2-5mm, the leaf basin leading edge region of processing aircraft 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 arms are not all in working position, in the time that speculum E is in A light-emitting window right on, laser beam A reflects through speculum E, to light combination mirror, the laser reflecting through light combination mirror again and laser beam B are exported by light hole B, simultaneously in the time that speculum C is in the rear of light hole B, the laser of B light hole output can reflex to through the reflection of speculum C on the speculum A of speculum C left, simultaneously when light path three speculums are not when the right astern in speculum A reflected light path, speculum A reflects laser and reflexes in the even smooth condensing lens group of light path four through light path four speculums, form the uniform square focus spot of light intensity of length of side 2-5mm, leaf basin trailing edge region and the leaf basin blade tip region of processing aircraft engine leaf dish,

Described light path system is switched to light path two work and refers to: when light path one swing arm and light path three swing arms are not all in working position, in the time that speculum E is in light-emitting window A right on, laser beam A reflects through speculum E, to light combination mirror, the laser reflecting through light combination mirror again and laser beam B are exported by light hole B, simultaneously in the time that speculum C and speculum D are in respectively the rear of light hole A and light hole B, the laser of B light hole output through the reflective of speculum D to the speculum B of speculum D front-right, simultaneously when light path one speculum is not when the right astern in speculum B reflected light path, speculum B reflects laser and reflexes in the even smooth condensing lens group of light path two through light path two-mirror, form the uniform square focus spot of light intensity of length of side 2-5mm, blade back leading edge region and the blade back blade tip region of processing aircraft engine leaf dish.

To blisk carry out laser impact intensified before, first the light path three (9) to light path system, light path four (10), light path two (14) and light path one (15) are carried out verification, guarantee all can normally work.

To before blisk regional processing, first on region to be processed, paste thickness and be black tape 100 μ m, that width is 14mm as absorption layer, after this region processing is completed, remove the black tape on it.

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 even thickness.

Laser beam A and laser beam B are that input wavelength is that 1064nm, single pulse energy are that 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 size are the circular laser beam of 3mm.

Laser beam A and laser beam B are that input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, described light path four (10) and light path two (14) output single pulse energy 7-10J, pulsewidth 15-20ns, spot size are the square laser beam of 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 is once processed, i.e. pointwise is processed.

Described laser impact intensified in, the overlapping rate of circular light spot is 20%-30%, 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, blade root region does not process.

Described desired trajectory refers to: blisk laser impact intensified, for the process zone of 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 to the processing from blade root direction to blade tip direction again of blade interior skew distance to a declared goal, reciprocal 4 times altogether; For the process zone of each blade tip, the precedence of shock peening is: the first processing from leading edge direction to trailing edge direction at blade tip place, then to the processing from leading edge direction to trailing edge direction again of blade interior skew distance to a declared goal, reciprocal 4 times altogether; Described distance to a declared goal refers to according to the overlapping rate of circular light spot or square focus spot and is offset to blade interior.

Described blisk laser impact intensified, for the last processing together near blade interior, front 3 roads of energy Ratios energy used is low by 20%.

Beneficial effect of the present invention is as follows:

1, square focus spot and circular light spot automatically, switch fast, the efficiency of shock peening processing is high.

2, the deflection of workpiece is little.

3, leaf dish laser impact intensified after, more than residual compressive stress can reach 300MPa.

4, laser impact intensified leaf dish high-frequency vibration after treatment improves more than approximately 20～30 times fatigue lifetime.

Accompanying drawing explanation

Fig. 1 is the inventive method equipment used overall plan figure;

Fig. 2 is inventive method equipment used schematic layout pattern;

Fig. 3 is local water feeding machine device robot system 105 structural representations that amplify in Fig. 2;

Fig. 4 is the light path system 103 of local amplification in Fig. 2 and the structural representation of laser head 109;

Fig. 5 is the work schematic diagram of track of the present invention robot 106;

Wherein, 107 is leaf dish, and 111 is nozzle, and 115 is laser beam;

Fig. 6 is the structural representation that send water system 101 in equipment used;

Fig. 7 is equipment used hardware composition schematic diagram;

Fig. 8 is the clamp structure schematic diagram of equipment used of the present invention;

Fig. 9 is the vertical view of fixture joint flange in equipment used of the present invention;

Figure 10 is the A-A sectional view of Fig. 9;

Figure 11 is the structural representation of fixture cone strut member in equipment used of the present invention;

Figure 12 is the structural representation of chucking opening packing in equipment used of the present invention;

Figure 13 is the vertical view of Figure 12;

Figure 14 is the vertical view of point cone such as fixture in equipment used 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 equipment used of the present invention;

Figure 17 is the structural representation of fixture abnormity nut in equipment used of the present invention;

Figure 18 is the vertical view of Figure 17;

Wherein: 1 is abnormity nut, 2 is screw, and 3 is joint flange, and 4 is screw, and 5 is cone strut member, 6 is decile cone, and 7 is opening packing, and 8 is leaf dish, and 9 is rubber cushion, and 10 is gland, 11 is plain cushion, and 12 is pull bar, and 13 is pin, and 14 is web plate, and 15 is tapered dowel;

Figure 19 is the light path system structure iron of laser head part in equipment used 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 apparatus, 515 is optical table, and 903 is light pipe A, 511 is large condensing lens, 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 pipe connecting, 910 is web plate, and 911 is balancing weight, and 912 is little condensing lens, 913 is lock screw B, and 914 is small reflector, and 915 is screw with flat head, 916 is lock screw A, and 917 is small reflector microscope base, and 918 is light-emitting window;

Figure 24 is equipment work schematic diagram of the present invention;

Figure 25 is light path system sketch of the present invention;

Figure 26 is light path system vertical view of the present invention;

Figure 27 is light path system stereographic map of the present invention;

Figure 28 is optical table structure diagram;

Figure 29 is the laser beam design sketch of optic path;

Wherein: 501 is that light path one is switched slide unit with light path two, 502 is light path two-mirror, 503 is light path one speculum, 504 is the even smooth condensing lens group of light path two, 505 is light path one condensing lens, 506 is light path one turntable, 507 is light path one small reflector, and 508 is light path three small reflectors, and 509 is light path three turntables, 510 is the even smooth condensing lens group of light path four, 511 is light path three condensing lenss, and 512 is light path four speculums, and 513 is light path three speculums, 514 switch slide unit for light path three and light path four, and 515 is optical table, 516 is speculum A, 517 is light-emitting window slide unit, 518 is speculum C, 102 is laser apparatus, 520 is speculum E, 521 is nc sliding table, 522 is speculum D, 523 is speculum B, 524 is the even light microscopic sheet of light path two, 525 is light path two condensing lenss, 526 is light path three and light path four verification slide units, 527 is light path three and light path four verification energy meters, 528 is light path one swing arm, 529 is light path three swing arms, 530 is light path one and light path two verification energy meters, 531 is light path one and light path two verification slide units, 532 is light path four condensing lenss, 533 is the even light microscopic sheet of light path four, 534 is protective shield, 535 is shield cap, 903 is light pipe A, 537 is light combination mirror.

Figure 30 is territory, blisk of the present invention Laser Shock Processing; 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 overlap joint schematic diagram of the present invention.

Figure 32 is square focus spot overlap joint schematic diagram of the present invention.

Wherein: 401 is blade back leading edge region, 402 is blade back blade tip region, and 403 is blade back trailing edge region, and 404 is leaf basin trailing edge region, 405 is leaf basin blade tip region, and 406 is leaf basin leading edge region, and 409 is light path three, 410 is that light path four, 414 is that light path two, 415 is light path one.

Embodiment

Below in conjunction with drawings and Examples in detail the present invention is described in detail.

The preferred equipment of laser shock peening method of the present invention used is as follows:

The structure and layout of this equipment as shown in Figure 2, send water system 101 to be connected with water feeding machine device robot system 110, realize the process zone of delivering to leaf dish 107 according to assigned direction and large young pathbreaker's water; The laser beam that laser apparatus 102 sends, the process zone that is directly transferred to the process zone of leaf dish 107 or is transferred to leaf dish 107 by light path system 103 and laser head 109 by being arranged on the light path system 103 in laser apparatus 102 right ons, wherein the light-emitting window of laser apparatus 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 process zones with high, for monitoring the processing quality of leaf dish; Be arranged on support 105 machining process monitoring system 313 for the running status of watch-dog; leaf dish 107 is arranged on track robot 106 arm ends by fixture 108; drive its motion by track robot; laser apparatus 102 is connected with upper computer 112 by laser controller 113; water feeding machine device people 110 is connected with upper computer by robot controller 114 with track robot, and described send water system 101, laser apparatus 102, Quality Monitoring Control System 104, water feeding machine device people 110, track robot 106, light path system 103 are controlled by upper computer 112 is unified.

As shown in Fig. 1-7, equipment used of the present invention comprises laser apparatus 102, the track robot 106 that clamping leaf dish 107 moves with respect to laser beam along intended trajectory, clamping nozzle 111 moves and water is delivered to the water feeding machine device people 110 of process zone along intended trajectory, the restraint layer of controlling water yield size and automatic start-stop send water system (comprise and send water system 101 and water feeding machine device robot system 105), the acoustic pressure Quality Monitoring Control System 104 of real time on-line monitoring processing quality, the machining process monitoring system 313 of the normal operation of monitoring and operating device, the laser beam reshaping that laser apparatus 102 is sent also transfers to the light path system 103 of Working position.

Wherein: laser apparatus 102 is for generation of the laser of the short pulse of pulsewidth 8～25ns, frequency 0～10Hz, beam diameter < 27mm, single pulse energy < 25J, focus on through follow-up light path system, can produce high-peak power density (> 10 ⁹w/cm ²) laser, thereby between metal targets and restraint layer, form plasma body.

Workpiece (leaf dish) is fixed in the end clamp 108 of track robot 106; rely on the drive of robot to make workpiece motion s enter processing space; and constantly adjust position and the attitude of workpiece according to strengthening machining locus, thereby realize the laser impact intensified of workpiece different positions.Meanwhile, the calibration of also realizing leaf dish in the end clamp of robot rotatablely moves, thereby realizes 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 ends, rely on the drive of robot to make nozzle 111 be moved into processing space, and constantly adjust position and the attitude of nozzle according to strengthening machining locus, thereby it is even to realize the waterflow stabilization of process zone.

Restraint layer send water system to be made up of water tank 624, water pump 627, magnetic valve 618, flow valve 311, liquid level sensor (water level sensor) 623, flow sensor (water flow sensing unit) 626, header tank 314 etc.The moisture storage capacity of the deionized water by 624 li, liquid level sensor 626 and magnetic valve 312 Monitoring and Controlling water tank, automatic water supplement when water shortage, when the water yield exceedes set(ting)value, Self-shut electromagnetic valve 312 stops moisturizing; Constant voltage water pump 627 is pumped deionized water to flow valve 311 from water tank 624, guarantees the constant pressure of flow valve 311 water inlets; Adjust the uninterrupted at nozzle 111 places by constant voltage water pump 627; Monitor pump outlet by flow sensor 626 and whether have deionized water circulation; Control the break-make of current by the magnetic valve 312 before nozzle 111.

Acoustic pressure Quality Monitoring Control System 316 characterizes the effect of laser-impact processing by the shock wave energy of monitoring laser-impact, in the leaf dish course of processing, corresponding data are once all recorded in every impact processing, for the adjustment of processing parameter provides reference.

Machining process monitoring system 313 is carried out Real-Time Monitoring pre-control to the course of processing parameter of laser-impact, realizes water feeding machine device people and track robot motion Real-Time Monitoring, and laser apparatus 102 running state real-time monitorings, realize unmanned in workshop, remote monitoring.

Laser Transmission is arrived specified location by light path system 103, and be shaped to the hot spot of required size shape, can realize single two-sided processing switching arbitrarily, circular light spot and square focus spot simultaneously and switch arbitrarily.

As Figure 1-5, the laser impact intensified equipment of blisk, comprise can outgoing laser beam laser apparatus 102, track robot 106 with movable vane rim intended trajectory with respect to laser beam motion, clamping shower nozzle moves and water is delivered to the water feeding machine device robot system 104 of process zone along intended trajectory, the restraint layer of 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 processing quality, the machining process monitoring system 313 of the normal operation of monitoring and operating device, the laser beam reshaping that laser apparatus is sent also transfers to the light path system 103 of Working position.The laser that laser apparatus 102 sends is guided to the surface of workpiece by light path system 103, the light hole of laser apparatus 102 and the light well of light path system coordinate, and guarantees that laser beam completely vertically enters light path system 103.Send water system 101 that water is delivered to nozzle 111 places, water feeding machine device people 110 drives nozzle 111, water is sprayed onto to the Working position place of workpiece 107, running status and the operation scheme of PMS 313 moment monitoring and Controlling System, acoustic pressure Quality Monitoring Control System 316 detects the processing quality of workpiece, and feed back to industrial computer, and carry out adjusting process parameter, make processing quality reach optimum.Closely cooperating and the cooperation of software of above-mentioned each subsystem, forms laser impact intensified equipment, realizes the laser impact intensified processing of leaf dish, improves the fatigue lifetime of workpiece.

Laser apparatus function in equipment used of the present invention is as follows:

The laser apparatus 102 of outgoing laser beam can output wavelength be that 532nm, diameter are 3mm, and light intensity is 0.1-2mJ/cm ²direct light, for observing the position of laser beam and hot spot, simultaneously can output wavelength 1064nm, diameter is that 27mm, single pulse energy 25J, frequency are the pulse laser that 0-5Hz, pulsewidth are 8-25nns, for laser impact intensified.

The laser beam right alignment < 0.5mrad of the laser beam of the wavelength 532nm that laser apparatus 102 is exported and wavelength 1064nm.

The mode of operation of laser apparatus 102 is separate unit two-way and can single channel work, and laser apparatus has two light hole A and B, and A light hole and B light hole be Output of laser simultaneously, also can be only from B light hole Output of laser.While selecting A, the bright dipping simultaneously of B light hole, A, B light hole maximum simultaneously output wavelength 1064nm, diameter are that 27mm, single pulse energy 12.5J, frequency are the pulse laser that 0-5Hz, pulsewidth are 8-25nns, can output wavelength be that 532nm, diameter are 3mm, light intensity be 0.1-2mJ/cm simultaneously ²direct light; While selecting only from the bright dipping of B light hole, B light hole maximum simultaneously output wavelength 1064nm, diameter is that 27mm, single pulse energy 25J, frequency are the pulse laser that 0-5Hz, pulsewidth are 8-25nns, can output wavelength be that 532nm, diameter are 3mm, light intensity be 0.1-2mJ/cm simultaneously ²direct light.

Two light hole A of laser apparatus 102 and the width between centers of B are 231mm, the width between centers laser apparatus left side edge 250mm of B light hole.A and B light hole, in same level, are 895mm apart from floor level.

A light hole on laser apparatus 102, the bright dipping simultaneously of B light hole or only have the switching mode of B light hole bright dipping: 45 ° of completely reflecting mirrors that can manually slide before A light hole, also digit control slide unit drives 45 ° of completely reflecting mirrors incisions before A light hole or cuts out light path and realizes.

The size of laser apparatus 102 is 2400mm × 1200mm × 1300mm.

The robot that the present invention adopts comprises:

Track robot 106 clamps that leaf dish 107 moves with respect to laser beam along intended trajectory.Track robot 106 is that 6DOF robot, model are RX270, and overall loading is that 250Kg, reach distance are that 2900mm, repetitive positioning accuracy are ± 0.09mm, and degree of protection is IP65.

Water feeding machine device people 110 clamps shower nozzle, along intended trajectory, water is delivered to process zone.Water feeding machine Qi Ren110Wei 6DOF robot, model are TX40, and overall loading is that 2Kg, reach distance are that 500mm, repetitive positioning accuracy are ± 0.02mm, and degree of protection is IP65.

In equipment used of the present invention, send water system structure and function as follows:

As shown in Figure 6, the restraint layer of 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, overflow port 619, upflow tube 620, ball valve A621, blow-off pipe 622, water level sensor 623, water tank 624, ball valve B625, water flow sensing unit 626, water pump 627, flow valve 311, magnetic valve 312, nozzle 111.Water valve 616 is connected on water source 615, realize the break-make of the current between water source and water inlet pipe 617, entering water electromagnetic valve 618 is arranged between water inlet pipe 617 and water tank 624, upflow tube 620 is arranged on overflow port 619, blow-off pipe 622 is connected on water tank 624 by ball valve A621, and water level sensor 623 is arranged on the bottom of water tank.Ball valve B625 is arranged on the bottom of water tank 624 and links together by water pipe with water pump 627.Water flow sensing unit 626 is arranged on the exit end of water pump 627, and water pipe is guided to the water in water flow sensing unit 626 exits on flow valve 311, and magnetic valve 312 is controlled the break-make of flow valve 311 water outlets, and water pipe couples together magnetic valve 312 and nozzle 111.Thereby realize the water at 615 places, water source is delivered to nozzle 111 places.The water that nozzle 111 sprays collects by header tank 624, sends into water treatment plant together with upflow tube 620, blow-off pipe 622 water out.

Mutually cooperate by entering water electromagnetic valve 617 and water level sensor 623 and industrial computer, realize water tank 624 automatic water supplements, guarantee that the water yield of 624 li of water tanks remains at the 30%-80% of water tank 624 total volumies.Meanwhile, due to upflow tube 620 being installed, make to send water system more safe and reliable.

By the size of flow in feed water flow sensor 626, constant voltage water pump 627, flow valve 311, magnetic valve 312 Control Nozzles 111, and can control in real time.

Send the size of flow in water system, water feeding machine device people 110 Control Nozzles 111, position and the attitude of nozzle by restraint layer, the water layer thickness that makes process zone leaf panel surface is 1-2mm, and uniform and stable, adjustable continuously.

In equipment used of the present invention, supervisory system structure and function are as follows:

Acoustic pressure Quality Monitoring Control System 316 carries out Real-Time Monitoring to laser impact intensified processing quality, obtains 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 (upper computer) by connecting amplifier, in industrial computer, be also inserted with PCI-1780 timer counter card, ET-3000TIL laser detector is fixed on the light-emitting window place of laser apparatus; Timer counter card assurance laser apparatus 102 and acoustic pressure Quality Monitoring Control System 316 are worked under same clock, in the time that laser 102 devices send laser, laser detector detects laser, detector sends a signal to industrial computer, industrial computer turn-on data capture card carries out data gathering, by the picked up signal storage of calibrate AE sensor, industrial computer is analyzed the signal gathering, and judges the quality of processing quality.

Normal operation comprises with operating device in monitoring: the camera of machining process monitoring system 313 is connected with upper computer, is used for monitoring the processing situation of aircraft engine blisk; Whether the temperature sensor that is arranged on laser apparatus 102 inside is connected with upper computer, be used for monitoring laser normally to work; The position transducer that is arranged on water feeding machine device people 110 and track robot 106 joints is connected with upper computer with encoder, is used for monitoring track robot, water feeding machine device people's position; Whether the photo-sensor that is arranged on light-emitting window in light path system is connected with upper computer, be used for monitoring light path system and normally work; Send the pressure transmitter (water level sensor) of water system 101 to be connected with upper computer, whether the water level in monitoring water tank is normal, and upper computer is controlled in real time to whole equipment, they is joined as a whole by data line.

The principle of work of equipment used of the present invention is as follows:

As shown in figure 24, the function of upper computer is mainly made up of robot motion planning, machining process simulating, machining process monitoring, processing quality monitoring, technological data bank and system coordination control etc., under the control of upper computer, send water system produce current and be delivered to shower nozzle, size, the break-make of water feeding machine device robot system control discharge, and drive shower nozzle motion that water is delivered to the process zone that leaf dish is specified, form restraint layer at specified location; Track robot drives the leaf dish being contained on fixture according to specifying machining path motion; Laser apparatus Output of laser, transfers in light path system, and from light path system, laser radiation is out on the surface of leaf dish process zone or be radiated at the surface of process zone through laser head; Quality Monitoring Control System in supervisory system and video/alarm monitoring system are monitored respectively the laser impact intensified quality of leaf dish and system running state.The cooperation of said system realizes the laser impact intensified processing of whole leaf dish, improves fatigue lifetime and the anti-stress corrosion performance of leaf dish.

The laser beam reshaping that light path system 103 sends laser apparatus also transfers to Working position.Light path system 103 comprises nc sliding table, numerical control rotating platform, speculum, condensing lens, even light microscopic, swing arm composition.The laser beam of exporting from laser apparatus 102 enters light path system 103, can export square focus spot or circular light spot from light path system, wherein, the light path of output square focus spot is made up of 2 covers, and symmetrical in structure, the light path of output circular light spot is made up of 2 covers, and symmetrical in structure.4 cover light paths can, according to processing needs, switch to arbitrarily a set of light path work wherein, and the light path that also can switch to the symmetrical output square focus spot of 2 covers is worked simultaneously.

In the time selecting A, the B light hole bright dipping simultaneously of laser apparatus 102, output wavelength 1064nm, diameter are that 27mm, single pulse energy 0-12.5J, frequency are the pulse laser that 0-5Hz, pulsewidth are 8-25nns simultaneously for A, the output of B light hole, output wavelength is that 532nm, diameter are 3mm, and light intensity is 0.1-2mJ/cm ²direct light, while selecting the light paths of the symmetrical output square focus spot of 2 cover to work, can form at workpiece surface the square focus spot of the about 2-4mm of the length of side simultaneously.

In the time selecting laser apparatus 102 to only have the bright dipping of B light hole, B light hole output output wavelength 1064nm, diameter are that 27mm, single pulse energy 0-25J, frequency are the pulse laser that 0-5Hz, pulsewidth are 8-25nns, output wavelength is that 532nm, diameter are 3mm, and light intensity is 0.1-2mJ/cm ²direct light, while selecting any a set of light paths work of light path of the symmetrical output square focus spot of 2 cover, can form at workpiece surface the square focus spot of the about 2-4mm of the length of side.

In the time selecting laser apparatus 102 to only have the bright dipping of B light hole, B light hole output output wavelength 1064nm, diameter are that 27mm, single pulse energy 0-25J, frequency are the pulse laser that 0-5Hz, pulsewidth are 8-25nns, output wavelength is that 532nm, diameter are 3mm, and light intensity is 0.1-2mJ/cm ²direct light, while selecting any a set of light paths work of light path of the symmetrical output circular light spot of 2 cover, can form at workpiece surface the circular light spot of diameter 2-4mm.

Laser impact intensified equipment can add size < 1000mm × 1000mm × 400Tm, blisk or the structural part of the material such as the superalloy of weight < 250Kg, steel, aluminium alloy.

The software system of laser impact intensified equipment comprise robot motion's trajectory planning module, machining process simulating module, machining process monitoring module, processing quality monitoring module, process data database management module, system integration module, assurance machining path optimum, the safest, the most reliable.

Utilize this equipment to the process of workpiece processing to be:

When use, first blisk 107 is arranged on fixture 108; Then fixture 108 is arranged on the flange of track robot 106 ends; Then, paste one deck absorption layer in the region to be processed of blisk 107, for absorbing laser energy; Then, will select the light path of any a set of light path or 2 cover output square focus spots in running order; Then, track robot enters Working position with blisk; Then, water feeding machine device people 110 enters Working position with shower nozzle 111; Then open and send water system 101, form on the surface of leaf dish process zone the deionized water that one deck is even, stable, thickness is 1-2mm; Then, open laser apparatus 102; Finally, track robot 106 and water feeding machine device people 110, according to the orbiting motion of prior formulation, realize the laser impact intensified of aircraft engine blisk.

The structure of fixture is specific as follows:

As shown in Fig. 8-18, fixture comprises abnormity nut 1, joint flange 3, cone strut 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 comprises pin 13, web plate 14 and tapered dowel 15, pin 13 and tapered dowel 15 are arranged on respectively in the pin-and-hole at web plate two ends, between pin 13 and tapered dowel 15 and web plate 14, adopt shrink-fit, both guaranteed pin 13 in the process of dismounting leaf dish 8, tapered dowel 15 and web plate 14 are always one, guarantee that again location is reliable.Abnormity nut 1 is arranged on one end of joint flange 3 by screw 2, the end face of cone strut member 5 one end is the other end at joint flange 3 by screw 4 and pin location and installation.Decile cone 6 is sleeved on the other end outside of cone strut member 5, and the lower end edge circumferential 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 sides matches with the end face of cone strut member 5 one end.Rubber cushion 9 is fixed by screws on gland 10, guarantees in the process of stepping up, leaf dish 8 nothings to be scratched.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 strut member 5; Put plain cushion 11 in the outside of gland 10, guarantee in the process of stepping up stressed evenly to gland 10.Pull bar 12 is threaded with abnormity nut 1 through plain cushion 11, gland 10, cone strut member 5 and joint flange 3.Screwing in the process of pull bar 12, opening packing 7 constantly outwards expands, and realizes leaf dish 8 axial location and radial location, adds and fasten.Joint flange 3 is realized and being connected of robot ring flange, location by screw and steady brace.

The tapering of the conical surface that cone strut member 5 and decile cone 6 match is 7:24, decile cone 6 is than the axial long 4.5mm of cone strut member 5, after stepping up, the lower surface of decile cone 6 is gapped all the time apart from the end face of cone strut member 5 one end, gapped all the time between the other end of cone strut member 5 and gland 10, the conical surface that assurance matches steps up reliably, and leaf dish 8 steps up reliably.

Packing 7 adopts copper product, and cone strut member 5 and tapered dowel 15 adopt duralumin material, guarantees leaf dish 8 without scratching.Joint flange 3 adopts stainless material, guarantees the rigidity of integral clamp.

The using method of clamp is:

When use, first, abnormity nut 1 is arranged on joint flange 3 by screw 2, joint flange 3 and cone strut 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 web plate 14; Then, joint flange 3 is installed together by screw and steady brace and robot ring flange; Then, will wait point cone 6 to be sleeved on the outside of cone strut member 5; Then, opening packing 7 is sleeved on to the outside of decile cone 6; Then, leaf dish 8 is sleeved on to the outside of opening packing 7, the exhaust side end face of leaf dish 8 and the laminating of the end face of cone strut member 5, realize end face location; Then, pivoting leaf dish 8, is arranged on pin 13 and pin 15 respectively in the pilot hole of leaf dish 8 and the pilot hole of cone strut member 5, realizes leaf dish 8 and circumferentially locates; Then, plain cushion 11 is enclosed within on pull bar 12, and on the optical axis of one end of close 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 directions, and cone strut member 5 and decile cone 6 contacts area are increasing, constantly ordering about opening packing 7 outwards expands, swelling leaf dish 8, realizes location, axle center, simultaneously, gland 10 is constantly pressed on the end face of leaf dish 8 by rubber cushion 9, and realization steps up.

After machining, when dismounting leaf dish 8, spin off pull bar 12, take off plain cushion 11, take off the pin 13, web plate 14 and the tapered dowel 15 that link together, take off gland 10, just desirable inferior lobe dish 8.

Clamp carries out clamping and positioning by pull bar to leaf dish, and clamping and positioning process is simple fast, and the dismounting leaf dish time is no more than 2 minutes; ; Can realize the blisk that loads the about 100kg of maximum weight; The method that adopts bearing pin, end face and expansion core location, repetitive positioning accuracy is high, and location is reliable; Clamping and positioning is reliable, has greatly improved laser impact intensified quality and the production efficiency of leaf dish; Have simple in structure, quality is light, easy to use, low cost and other advantages, in enhancing productivity, has guaranteed homogeneity and the stability of shock peening quality; The position contacting with leaf dish has adopted rubber cushion, copper and aluminum alloy materials, and jig main body adopts stainless material, has guaranteed that to leaf dish, without scuffing, fixture is non-corrosive under the working condition being immersed in water.

Laser head structure is specific as follows:

Blisk of the present invention covers the laser impact intensified laser head structure of using in position as shown in Figure 19-23, and this laser head comprises numerical control rotating platform 905, swing arm 906, laser head end 907, large condensing lens 511, little condensing lens 912, small reflector 914 and small reflector microscope base 917; Wherein: numerical control rotating platform 905 and large condensing lens 511 are arranged on optical table 515 by screw and mirror holder respectively, one end of swing arm 906 is fixedly mounted on numerical control rotating platform 905, can be made swing arm 906 enter working position and be left working position by mode manually or automatically; 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, light-emitting window 918 is set in the end sides of laser head end 907, and little condensing lens 912 is fixed on light-emitting window 918 places of laser head end 907; The position that small reflector microscope base 917 and light-emitting window 918 arrange make to be irradiated to the incident light on small reflector 914 and the reflected light that reflects by small reflector 914 between angle be 30-34 °.

Described swing arm 906 is made up of web plate 910, pipe connecting 909 and light pipe 908; Wherein: between web plate 910 and numerical control rotating platform 905, fix by screw, between web plate 910 and numerical control rotating platform 905, guarantee swing arm level by pad one deck rubber cushion; Between web plate 910 and pipe connecting 909, locate by the shaft shoulder, and fixed by locking screw; Between light pipe 908 and pipe connecting 909, locate by the shaft shoulder, and fixed by locking screw; Before light pipe 908 is connected with pipe connecting 909, can be in advance at the interior rotation light pipe 908 of pipe connecting 909, adjust the direction of laser head end 907 Output of lasers, in the present invention, be to be used for guaranteeing the output of light-emitting window place laser level direction by rotating light pipe 908, and then tighten screw and be fixed and prevent from rotating.

Between the light pipe 908 of described swing arm 906 and laser head end 907, locate by the shaft shoulder, and fastening by lock screw A916.

On numerical control rotating platform 905, by screw, balancing weight 911 is installed, for the weight of balance oscillating arm 906, assurance numerical control rotating platform 905 is normally worked, 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 material, in guaranteeing weight, prevents from getting rusty in damp atmosphere.Numerical control rotating platform (905) is connected with motor coaxle, and motor is controlled by upper computer (112), and the encoder of motor is connected with upper computer (112).

Described small reflector microscope base 917 is fixed on the afterbody of laser head end 907 by the screw with flat head 915 of M3; Wherein: small reflector microscope base 917 adopts counter sink structure design; Before tightening screw with flat head 915, at screw with flat head 915 screw thread places, small reflector microscope base 917 is coated with one deck ultra-violet curing glue with the bonding surface place of the afterbody of laser head end 907, tighten after screw, put into ultra-violet curing case and solidify 30s, bonding surface is sealed, prevent in the laser impact intensified course of processing having water to enter laser head internal breakdown eyeglass.

The small reflector 914 that size is 10mm × 9mm × 2mm is embedded in the groove that on small reflector microscope base 917, size is 10mm × 9mm × 2mm.Wherein, small reflector: plating highly reflecting films, reflectance coating R > 99.8@1064nm, damage threshold is pulse 25J/cm ², 10ns, 2Hz; Input angle is α=16 ± 2 °, and wavelength 532nm and 1064nm laser reflectivity thereon all can reach more than 99.5%.

Little condensing lens 912 is fixed on light-emitting window 918 places of the end 907 of laser head by lock screw B913, adopt the mode of shaft shoulder location to position; Wherein: before tightening lock screw B913, at lock screw B913 screw thread place, the bonding surface place at little condensing lens 912 edges and laser head end 907 light-emitting window 918 places is coated with one deck ultra-violet curing glue, tighten after lock screw B913, put into ultra-violet curing case and solidify 30s, bonding surface is sealed, prevent in the laser impact intensified course of processing having water to enter laser head internal breakdown eyeglass; The eyeglass damage threshold of little condensing lens 912: pulse 25J/cm ², 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon all can reach more than 99.5%.

Large condensing lens 511 is fixed on optical table 515 by mirror holder.Wherein: all adopt 4 dimension adjustment mechanisms for its regulating mechanism of mirror holder that large condensing lens 511 is fixed on optical table 515, there is locking function, can realize moving horizontally and the rotation of both direction of both direction, just in time vertically pass from the center of large condensing lens thereby can adjust laser beam; The eyeglass damage threshold of large condensing lens 511: pulse 25J/cm ², 10ns, 2Hz, wavelength 532nm and 1064nm laser transmissivity thereon all can reach more than 99.5%.

The diameter of little condensing lens 912 is 10mm, and focal length is 10mm, and thickness is 7mm.

The diameter of large condensing lens 511 is 50mm, and focal length is 1300mm, and thickness is 4mm.

Swing arm 906 is arranged on numerical control rotating platform 905, rotates within the scope of 90 ° by automatic control or manual mode control numerical control rotating platform, and laser head can be cut working position and leave working position.

The size of laser head end 907 ends is 23 × 21 × 19mm, guarantees that it moves freely between blade, and blade collisionless.

Be that the laser beam of 1064nm, angle of divergence < 3mrad, pulsewidth 8-25ns, frequency 0-5Hz enters laser head when having beam diameter < 27mm, wavelength, be about the circular light spot that 3mm, flat-top distribute forming diameter apart from laser head light hole 2mm place.

Above-mentioned laser head in use, first makes numerical control rotating platform 905 rotary works by the mode of automatic control or manually control, and swing arm 906 and laser head end 907 are entered to working position, allows laser head enter working position.When there being beam diameter < 27mm, wavelength is 1064nm, it is 50mm that the laser beam of angle of divergence < 3mrad impinges perpendicularly on diameter, focal length is on the large condensing lens of 1300mm time, large condensing lens focuses of the light beam on the small reflector of size for 10mm × 9mm × 2mm, by the reflection of small reflector, it is 10mm that laser beam is entered to diameter, focal length is in the little condensing lens of 10mm, by little condensing lens, light beam is focused on to blade surface, blade pitch eyeglass outside surface is 2mm, form diameter at blade surface and be about 3mm, the circular light spot that flat-top distributes.Thereby realize blisk is covered to the laser-impact shock peening at position.

Above-mentioned laser head can cover position to aircraft engine blisk and carry out laser impact intensifiedly, has solved aircraft engine blisk and has covered the difficult problem that position can not be processed; Structure is small and exquisite, safe and reliable, and Working position is easy to adjust; The laser beam homogeneous of output, has guaranteed the evenly reliable of processing quality; Easy to use, working (machining) efficiency is high.

The structure of the overall light path system of equipment used is specific as follows:

As shown in Figure 25-29, blisk list/double-sided laser shock peening light path system comprises: be arranged on that light path on optical table 515 one is switched slide unit 501 with light path two, light path three is switched slide unit 514 and light-emitting window slide unit 517 with light path four; Be arranged on the nc sliding table 521 that switch for light path laser apparatus 102 inside; Be arranged on light path three turntables 509 and light path one turntable 506 on optical table 515; Be arranged on light path three and light path four verification slide units 526 and light path one and light path two verification slide units 531 on optical table 515; Be arranged on light path two-mirror 502, light path four speculums 512, speculum A516 and speculum B523 on optical table 515; Be arranged on light path one condensing lens 505, light path three condensing lenss 511, light path two condensing lenss 525 and light path four condensing lenss 532 on optical table 515, be arranged on the even light microscopic sheet 524 of light path two and the even light microscopic sheet 533 of light path four on optical table 515, described light path two condensing lenss 525 and the even light microscopic sheet 524 of light path two form the even smooth condensing lens group 504 of light path two, and described light path four condensing lenss 532 and the even light microscopic sheet 533 of light path four form the even smooth condensing lens group 510 of light path four; Be arranged on respectively light path one swing arm 528 and light path three swing arms 529 on light path one turntable 506 and light path three turntables 509; Be arranged on respectively light path one small reflector 507 and light path three small reflectors 508 of light path one swing arm 528 ends and light path three swing arm 529 ends; Be arranged on respectively that light path one is switched slide unit 501 with light path two and light path three is switched light path one speculum 503 and light path three speculums 513 on slide unit 514 with light path four; Be arranged on speculum C518 and speculum D522 on light-emitting window slide unit 517; Be arranged on the speculum E520 on nc sliding table 521; Be arranged on the light combination mirror 537 of laser apparatus 102 inside; Be arranged on respectively light path three and light path four verification energy meters 527 and light path one and light path two verification energy meters 530 on light path three and light path four verification slide units 526 and light path one and light path two verification slide units 531; Be arranged on protective shield 534, shield cap 535 and light pipe A903 on optical table 515.The motor of nc sliding table is controlled by upper computer.

Described protective shield 534 is that the water for preventing the course of processing is splashed to light path three and light path four verification energy meters 527, light path one and light path two verification energy meters 530, light path three and light path four verification slide units 526 and light path one and light path two verification slide units 531; Described shield cap 535 and light pipe A903 are for preventing the optical mirror slip in the contamination by dust light path system in workshop.

Described speculum E520 under the driving of servomotor or the knob of manual rotation servomotor rear end, can slide on nc sliding table 521; Light-emitting window A and light-emitting window B are set on laser apparatus; In the time that speculum E520 is in light-emitting window A right on, laser beam A reflexes to light combination mirror 537 through speculum E520, then the laser reflecting through light combination mirror 537 and laser beam B are exported by light hole B; In the time that speculum E520 is in the position between light-emitting window A and light-emitting window B, laser beam A and laser beam B are respectively from light-emitting window A and light-emitting window B output.

Described speculum C518 and speculum D522 under the driving of servomotor or the knob of manual rotation servomotor rear end, can slide simultaneously on light-emitting window slide unit 517; When the bright dipping simultaneously of A light-emitting window and B light hole, in the time that speculum C518 and speculum D522 are in respectively the right astern of light hole A and light hole B, the speculum A516 that the laser of A light hole output can reflex to speculum C518 left through the reflection of speculum C518 is upper, and the laser of B light hole output can reflex on right-hand speculum B523 of speculum D522 through the reflection of speculum D522; While only having the bright dipping of B light hole, in the time that speculum C518 and speculum D522 are in respectively the rear of light hole A and light hole B, the laser of B light hole output can reflex on right-hand speculum B523 of speculum D522 through the reflection of speculum D522; While only having the bright dipping of B light hole, in the time only having speculum C518 to be in the rear of light hole B, the laser of B light hole output can reflex on the speculum A516 of speculum C518 left through the reflection of speculum C518.

Described light path one speculum 503 under the driving of servomotor or the knob of manual rotation servomotor rear end, can switch on slide unit 501 and slide in light path one and light path two; In the time having laser beam to reflect on speculum B523, when light path one speculum 3 is in the right astern of speculum B523 reflected light path, speculum B523 reflects laser and reflexes to through light path one speculum 503 on light path 501 condensing lenss 505 of light path one speculum 503 lefts; In the time having laser beam to reflect on speculum B523, light path one speculum 503 is not when the right astern in speculum B523 reflected light path, and speculum B523 reflects laser and reflexes in the even smooth condensing lens group 504 of light path two of light path two-mirror 502 lefts through light path two-mirror 502.

Described light path three speculums 513 under the driving of servomotor or the knob of manual rotation servomotor rear end, can switch on slide unit 514 and slide in light path three and light path four; In the time having laser beam to reflect on speculum A516, when light path three speculums 513 are in the right astern of speculum A516 reflected light path, the laser that speculum A516 reflection comes reflexes on right-hand light path three condensing lenss 511 of light path three speculums 513 through light path three speculums 513; In the time having laser beam to reflect on speculum A516, light path three speculums 513 are not when the right astern in speculum A516 reflected light path, and the laser that speculum A516 reflection comes reflexes in the even smooth condensing lens group 510 of right-hand light path four of light path four speculums 512 through light path four speculums 512.

The knob of described light path one swing arm 528 under the driving of servomotor or by manual rotation servomotor, can rotate around the axis of light path one turntable 506; In the time that light path one condensing lens 505 has Laser output, light path one swing arm 528 is put to light path one small reflector 507 just in time when the front-left in light path one condensing lens 505 output light paths, light path one small reflector 507 by the laser reflection of exporting through light path one condensing lens 505 to workpiece surface, to form diameter be 2-5mm the uniform circular light spot of light intensity; In the time that do not work in light requirement road one, light path one swing arm 528 dextrorotations go on optical table.

The knob of described light path three swing arms 529 under the driving of servomotor or by manual rotation servomotor, can rotate around the axis of light path three turntables 509; In the time that light path three condensing lenss 511 have Laser output, light path three swing arms 529 are put to light path three small reflectors 508 just in time when the front-right in light path three condensing lens 511 output light paths, light path three small reflectors 508 by the laser reflection of exporting through light path three condensing lenss 511 to workpiece surface, to form diameter be 2-5mm the uniform circular light spot of light intensity; In the time that do not work in light requirement road three, light path three swing arms 529 are rotated counterclockwise to optical table.

In the time that the even smooth condensing lens group 504 of light path two has laser beam input, workpiece surface is arrived in the laser radiation that light path two condensing lenss 525 are exported, the uniform square focus spot of light intensity that the formation length of side is 2-5mm.

In the time that the even smooth condensing lens group 510 of light path four has laser beam input, workpiece surface is arrived in the laser radiation that light path four condensing lenss 532 are exported, the uniform square focus spot of light intensity that the formation length of side is 2-5mm.

Described light path one, can be slided under the driving of servomotor or the knob of manual rotation servomotor rear end with light path two verification energy meters 530 on light path one and light path two verification slide units 531; Light path one swing arm 528 and light path three swing arms 529 are all in off-position, when the integrity of verification light path one, light path one and light path two verification energy meters 530 move to the right astern of light path one condensing lens 505, select Output of laser from light path one, the energy that optical path one is exported, contrasts with the energy of laser apparatus output; When the integrity of verification light path two, light path one and light path two verification energy meters 530 move to the right astern of light path two condensing lenss 525, select Output of laser from light path two, and the energy that optical path two is exported, contrasts with the energy of laser apparatus output; Add man-hour when workpiece is carried out to shock peening, light path one moves to the place of not blocking light path with light path two verification energy meters 530.

Described light path three, can be slided under the driving of servomotor or the knob of manual rotation servomotor rear end with light path four verification energy meters 527 on light path three and light path four verification slide units 526; Light path one swing arm 528 and light path three swing arms 529 are all in off-position, when the integrity of verification light path three, light path three and light path four verification energy meters 502 move to the right astern of light path three condensing lenss 511, select Output of laser from light path three, the energy that optical path three is exported, contrasts with the energy of laser apparatus output; When the integrity of verification light path four, light path three and light path four verification energy meters 527 move to the right astern of light path four condensing lenss 532, select Output of laser from light path four, and the energy that optical path four is exported, contrasts with the energy of laser apparatus output; Add man-hour when workpiece is carried out to shock peening, light path one moves to the place of not blocking light path with light path two verification energy meters 527.

When only by light-emitting window B bright dipping, when input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, when the laser beam of angle of divergence < 3mrad, the uniform circular light spot of light intensity that light path 1 or light path 3 409 can Output of laser spot diameters is 2-5mm; When only by light-emitting window B bright dipping, when input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, when 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 uniform square focus spot of light intensity of length of side 2-5mm.

In the time of light-emitting window A and light-emitting window B bright dipping simultaneously, when input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, when the laser beam of angle of divergence < 3mrad, the uniform circular light spot of light intensity that light path 1 and light path 3 409 can Output of laser spot diameters is 2-5mm; In the time of light-emitting window A and light-emitting window B bright dipping simultaneously, when input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, when 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 uniform square focus spot of light intensity of length of side 2-5mm.

When input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, when the laser beam of angle of divergence < 3mrad, the power loss < 6% of light path one and light path three; When input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, when the laser beam of angle of divergence < 3mrad, the power loss < 10% of light path two and light path four.

Light path system of the present invention is simple in structure, and use, in enhancing productivity, has guaranteed homogeneity and the stability of laser impact intensified quality; The quadruplet light path of design, can be as required, selects arbitrarily a set of light path or two cover light path work, can adapt to the workpiece processing of various structures shape; The square focus spot providing is for workpiece simple in structure such as processing planes, particularly applicable, in facilitating path planning, can guarantee that processing quality is uniform and stable, and efficiency is higher simultaneously; The process zone that the circular light spot providing blocks for processing structure complexity, by other positions of workpiece is particularly applicable, and the region that make difficult processing, can not process becomes can be processed; Whether the light path verification providing, can check the integrity of light path fast and effectively, can diagnose fast light path system operation normal; The protective shield that provides, shield cap, light pipe can effective anti-sealings, contamination by dust energy meter and eyeglass, thereby guaranteed the operation of equipment long-term stability.

Utilize aforesaid device to carry out laser impact intensified method to aircraft engine blisk to be: first the method is arranged on blisk on track robot end's ring flange by fixture, then light path system is set as successively to light path 3 409 work, light path one 415 work, light path 4 410 work, light path 2 414 work, light path 4 410 work and light path 2 414 work, blade back trailing edge region 403 to integrated impeller blade respectively successively, leaf basin leading edge region 406, leaf basin trailing edge region 404, blade back leading edge region 401, leaf basin blade tip region 405 and blade back blade tip region 402 are carried out laser impact intensified.The method concrete steps are as follows:

(1) material loading and subsides absorption layer: blisk 107 is arranged on by fixture on the ring flange of track robot 106 ends at upper material level (upper material level refers to the position that blisk is installed to track robot and pastes and remove absorption layer at process zone), pasting thickness in blade back trailing edge region 403 is that black tape 100 μ m, that width is 14mm is as absorption layer;

(2) enter processing and prepare some P ₀be switched to light path 3 409: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, 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 due to focused light passages swing arm structure complexity, laser head is progressively entered between blade, arrive blade back trailing edge 403 and focus on Working position;

(4) blade back trailing edge 403 focuses on processing: start to process to blade tip direction according to desired trajectory pointwise from the blade root of blade back trailing edge 403, process after a blade, automatically switch to next blade and process, until machine;

(5) get back to processing and prepare some P ₀with 3 409 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, the light path 3 409 of light path system 103 is got back to original position;

(6) track robot gets back to material level and pastes absorption layer: track robot 106 is moved to upper material level, the black tape of blade back trailing edge region 403 remnants is wiped totally with acetone cotton balls, and pasting thickness in leaf basin leading edge region 406 is that black tape 100 μ m, that width is 14mm is as absorption layer;

(7) enter processing and prepare some P ₀be switched to light path 1: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, light path system 103 is switched to light path one 415 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 due to focused light passages swing arm structure complexity, laser head is progressively entered between blade, arrive leaf basin leading edge 406 and focus on Working position;

(9) leaf basin leading edge 406 focuses on processing: start to process to blade tip direction according to desired trajectory pointwise from the blade root of leaf basin leading edge 406, process after a blade, automatically switch to next blade and process, until machine;

(10) get back to processing and prepare some P ₀with one 415 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, the light path 1 of light path system 103 is got back to original position;

(11) track robot gets back to material level and pastes absorption layer: track robot 106 is moved to upper material level, the black tape of leaf basin leading edge 406 remnants is wiped totally with acetone cotton balls, and pasting thickness in leaf basin trailing edge region 404 is that black tape 100 μ m, that width is 14mm is as absorption layer;

(12) enter processing and prepare some P ₀be switched to light path 4 410: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, light path system 103 is switched to light path 4 410 work;

(13) enter the even smooth Working position of leaf basin trailing edge 404: 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, process after a blade, automatically switch to next blade and process, until machine;

(15) get back to processing and prepare some P ₀with 4 410 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, the light path 4 410 of light path system 103 is got back to original position;

(16) track robot gets back to material level and pastes absorption layer: track robot 106 is moved to upper material level, the black tape of leaf basin trailing edge 404 remnants is wiped totally with acetone cotton balls, and pasting thickness in blade back leading edge region 401 is that black tape 100 μ m, that width is 14mm is as absorption layer;

(17) enter processing and prepare some P ₀be switched to light path 2 414: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, light path system 103 is switched to light path 2 414 work;

(18) enter the even smooth Working position of blade back leading edge 401: 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, process after a blade, automatically switch to next blade and process, until machine;

(20) get back to processing and prepare some P ₀with 2 414 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, the light path 2 414 of light path system 103 is got back to original position;

(21) track robot gets back to material level and pastes absorption layer: track robot 106 is moved to upper material level, the black tape of blade back leading edge 401 remnants is wiped totally with acetone cotton balls, and pasting thickness in leaf basin blade tip region 405 is that black tape 100 μ m, that width is 14mm is as absorption layer;

(22) enter processing and prepare some P ₀be switched to light path 4 410: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, light path system 103 is switched to light path 4 410 work;

(23) enter the even smooth Working position of leaf basin blade tip 405: 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, process after a blade, automatically switch to next blade and process, until machine;

(25) get back to processing and prepare some P ₀with 4 410 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, the light path 4 410 of light path system 103 is got back to original position;

(26) track robot gets back to material level and pastes absorption layer: track robot 106 is moved to upper material level, the black tape of leaf basin blade tip 405 remnants is wiped totally with acetone cotton balls, and pasting thickness in blade back blade tip region 402 is that black tape 100 μ m, that width is 14mm is as absorption layer;

(27) enter processing and prepare some P ₀be switched to light path 2 414: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, light path system 103 is switched to light path 2 414 work;

(28) enter the even smooth Working position of blade back blade tip 402: 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, process after a blade, automatically switch to next blade and process, until machine;

(30) get back to processing and prepare some P ₀with 2 414 times original positions of light path: track robot 106 with leaf dish 107 move to processing prepare some a P ₀, the light path 2 414 of light path system 103 is got back to original position;

(31) material level blanking is got back to by track robot: track robot 106 is moved to upper material level, the black tape of blade back blade tip 402 remnants is wiped totally with acetone cotton balls, pull down leaf dish 107, complete processing.

Before leaf dish is arranged in track robot to its clean, dedusting: first clean up with acetone, remove surperficial greasy dirt, then put into air raining chamber apoplexy and drench 5min, except the dust on defoliation dish 107 surfaces.

Point P is prepared in described processing ₀refer to the workpiece Working position of blisk in light path system.

Described focusing Working position refers to that laser head is between adjacent blade.

The starting position of light path system 103 is defaulted as the working order in light path 2 414, described in get back to original position and refer to get back to starting position.

Described light path system 103 is switched to light path 3 409 work and refers to: when light path one swing arm 528 is not in working position, in the time that speculum E520 is in A light-emitting window right on, laser beam A reflects through speculum E520, to light combination mirror 537, the laser reflecting through light combination mirror 537 again and laser beam B are exported by light hole B, simultaneously in the time that speculum C518 is in the rear of light hole B, the laser of B light hole output can reflex to through the reflection of speculum C518 on the speculum A516 of speculum C518 left, simultaneously in the time that light path three speculums 513 are in the right astern of speculum A516 reflected light path, speculum A516 reflects laser and reflexes on light path three condensing lenss 511 through light path three speculums 513, light path three swing arms 529 are put to light path three small reflectors 508 just in time when the front-right in light path three condensing lens 511 output light paths, light path three small reflectors 508 by the laser reflection of exporting through light path three condensing lenss 511 to workpiece surface, the uniform circular light spot of light intensity that formation diameter is 2-5mm, the blade back trailing edge region 403 of processing aircraft engine leaf dish,

Described light path system 103 is switched to light path one 415 work and refers to: when light path three swing arms 529 are not in working position, in the time that speculum E520 is in light-emitting window A right on, laser beam A reflects through speculum E520, to light combination mirror 537, the laser reflecting through light combination mirror 537 again and laser beam B are exported by light hole B, simultaneously in the time that speculum C518 and speculum D522 are in respectively the right astern of light hole A and light hole B, the laser of light hole B output is on the reflective of the speculum D522 speculum B523 right-hand to speculum D522, simultaneously in the time that light path one speculum 503 is in the right astern of speculum B523 reflected light path, speculum B523 reflects laser and reflexes on light path one condensing lens 505 through light path one speculum 503, simultaneously when light path one swing arm 528 is put to light path one small reflector 507 just in time when the front-left in light path one condensing lens 505 output light paths, light path one small reflector 507 by the laser reflection of exporting through light path one condensing lens 505 to workpiece surface, the uniform circular light spot of light intensity that formation diameter is 2-5mm, the leaf basin leading edge region 406 of processing aircraft engine leaf dish,

Described 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 arms 529 are not all in working position, in the time that speculum E520 is in A light-emitting window right on, laser beam A reflects through speculum E520, to light combination mirror 537, the laser reflecting through light combination mirror 537 again and laser beam B are exported by light hole B, simultaneously in the time that speculum C518 is in the rear of light hole B, the laser of B light hole output can reflex to through the reflection of speculum C518 on the speculum A516 of speculum C518 left, simultaneously when light path three speculums 513 are not when the right astern in speculum A516 reflected light path, speculum A516 reflects laser and reflexes in the even smooth condensing lens group 510 of light path four through light path four speculums 512, form the uniform square focus spot of light intensity of length of side 2-5mm, leaf basin trailing edge region 404 and the leaf basin blade tip region 405 of processing aircraft engine leaf dish,

Described 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 arms 529 are not all in working position, in the time that speculum E520 is in light-emitting window A right on, laser beam A reflects through speculum E520, to light combination mirror 537, the laser reflecting through light combination mirror 537 again and laser beam B are exported by light hole B, simultaneously in the time that speculum C518 and speculum D522 are in respectively the rear of light hole A and light hole B, the laser of B light hole output through the reflective of speculum D522 to the speculum B523 of speculum D522 front-right, simultaneously when light path one speculum 503 is not when the right astern in speculum B523 reflected light path, speculum B523 reflects laser and reflexes in the even smooth condensing lens group 504 of light path two through light path two-mirror 502, form the uniform square focus spot of light intensity of length of side 2-5mm, blade back leading edge region 401 and the blade back blade tip region 402 of processing aircraft engine leaf dish.

To blisk carry out laser impact intensified before, first the light path 3 409 to light path system, light path 4 410, light path 2 414 and light path 1 are carried out verification, guarantee all can normally work.Concrete checking procedure is as follows:

(1) in the time that speculum E520 is in A light-emitting window right on, laser beam reflects through speculum E520, laser beam will all be exported by B light hole, simultaneously in the time that speculum C518 and speculum D522 are in respectively the rear of light hole A and light hole B, the laser of B light hole output is on the reflective of the speculum D522 speculum B523 right-hand to speculum D522, simultaneously in the time that light path one speculum 3 is in the right astern of speculum B523 reflected light path, speculum B523 reflects laser and reflexes on light path one condensing lens 505 through light path one speculum 503, light path one swing arm 528 simultaneously and light path three swing arms 529 are not in working position, laser beam irradiation is on light path one and light path two verification energy meters 530, light path one is carried out to verification.

(2) in the time that speculum E520 is in A light-emitting window right on, laser beam reflects through speculum E520, laser beam will all be exported by B light hole, simultaneously in the time that speculum C518 and speculum D522 are in respectively the right astern of light hole A and light hole B, the laser of B light hole output is on the reflective of the speculum D522 speculum B523 right-hand to speculum D522, simultaneously when light path one speculum 503 is not when the right astern in speculum B523 reflected light path, speculum B523 reflects laser and reflexes in the even smooth condensing lens group 504 of light path two through light path two-mirror 502, light path one swing arm 528 simultaneously and light path three swing arms 529 are not in working position, laser beam irradiation is on light path one and light path two verification energy meters 530, light path two is carried out to verification.

(3) in the time that speculum E520 is in A light-emitting window right on, laser beam reflects through speculum E520, laser beam will all be exported by B light hole, simultaneously in the time that speculum C518 is in the right astern of light hole B, the laser of B light hole output can reflex to through the reflection of speculum C518 on the speculum A516 of speculum C518 left, simultaneously in the time that light path three speculums 513 are in the right astern of speculum A516 reflected light path, speculum A516 reflects laser and reflexes on light path three condensing lenss 511 through light path three speculums 513, light path one swing arm 528 simultaneously and light path three swing arms 529 are not in working position, laser beam irradiation is on light path three and light path four verification energy meters 527, light path three is carried out to verification.

(4) in the time that speculum E520 is in A light-emitting window right on, laser beam reflects through speculum E520, laser beam will all be exported by B light hole, simultaneously in the time that speculum C518 is in the rear of light hole B, the laser of B light hole output can reflex to through the reflection of speculum C518 on the speculum A516 of speculum C518 left, simultaneously when light path three speculums 513 are not when the right astern in speculum A16 reflected light path, speculum A516 reflects laser and reflexes in the even smooth condensing lens group 510 of light path four through light path four speculums 512, light path one swing arm 528 simultaneously and light path three swing arms 529 are not in working position, laser beam irradiation is on light path three and light path four verification energy meters 527, light path four is carried out to verification.

Laser beam A and laser beam B are that input wavelength is that 1064nm, single pulse energy are that 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 size are the circular laser beam of 3mm, light path four (10) and light path two (14) output single pulse energy 7-10J, pulsewidth 15-20ns, spot size are the square laser beam of 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 even thickness.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 is once processed, i.e. pointwise is processed.Described laser impact intensified in, the overlapping rate of circular light spot is 20%-30%, 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, blade root region does not process, as shown in figure 30.

Described desired trajectory refers to: blisk laser impact intensified, for the process zone of 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 to the processing from blade root direction to blade tip direction again of blade interior skew distance to a declared goal, reciprocal 4 times altogether; For the process zone of each blade tip, the precedence of shock peening is: the first processing from leading edge direction to trailing edge direction at blade tip place, then to blade interior skew distance to a declared goal more in the past direction to the processing of trailing edge direction, reciprocal 4 times altogether; Described distance to a declared goal refers to according to the overlapping rate of circular light spot or square focus spot and is offset to blade interior.

Embodiment 1

Material for test: TC17 whole titanium alloy leaf dish.

The pre-treatment of workpiece: first clean up with acetone, remove surperficial greasy dirt, then put into air raining chamber apoplexy and drench 5min, except the dust on defoliation dish (13) surface.

Laser impact intensified processing parameter: 1. restraint layer water adopts deionized water, and deionization resistivity of water reaches 18,000,000, and the thickness of restraint layer is 1mm, and even thickness; 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 right even light path output single pulse energy 7J, 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

Laser impact intensified processing parameter: 1. restraint layer water adopts deionized water, and deionization resistivity of water reaches 18,000,000, and the thickness of restraint layer is 2mm, and even thickness; 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 right even light path output single pulse energy 10J, 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

Laser impact intensified processing parameter: 1. restraint layer water adopts deionized water, and deionization resistivity of water reaches 18,000,000, and the thickness of restraint layer is 1.5mm, and even thickness; 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 right even light path output single pulse energy 9J, 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

1. a blisk laser shock peening method, it is characterized in that: first the method is arranged on blisk (107) on track robot end's ring flange by fixture, then light path system (103) is set as successively to light path three (409) work, light path one (415) work, light path four (410) work, light path two (414) work, light path four (410) work and light path two (414) work, blade back trailing edge region (403) to integrated impeller blade respectively successively, leaf basin leading edge region (406), leaf basin trailing edge region (404), blade back leading edge region (401), leaf basin blade tip region (405) and blade back blade tip region (402) are carried out laser impact intensified.

2. according to blisk laser shock peening method claimed in claim 1, it is characterized in that: the method specifically comprises the steps:

(1) blade back trailing edge 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 in blade back trailing edge region (403), process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(2) leaf basin leading edge region (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 in leaf basin leading edge region (406), process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(3) leaf basin trailing edge 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 in leaf basin trailing edge region (404), process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(4) blade back leading edge region (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 in blade back leading edge region (401), process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(5) leaf basin blade 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 to process to blade tip direction according to desired trajectory pointwise from the blade root in leaf basin blade tip region (405), process after a blade, automatically switch to next blade by the control of track robot and process, until machine;

(6) blade back blade 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 to process to blade tip direction according to desired trajectory pointwise from the blade root in blade back blade tip region (402); process after a blade; automatically switch to next blade by the control of track robot and process, until machine.

3. according to blisk laser shock peening method claimed in claim 2, it is characterized in that: described light path system comprises: be arranged on that light path on optical table (515) is switched slide unit (501) with light path two, light path three is switched slide unit (514) and light-emitting window slide unit (517) with light path four; Be arranged on the inner nc sliding table (521) switching for light path of laser apparatus (102); Be arranged on light path three turntables (509) and light path one turntable (506) on optical table (515); Be arranged on light path three and light path four verification slide units (526) and light path one and light path two verification slide units (531) on optical table (515); Be arranged on light path two-mirror (502), light path four speculums (512), speculum A(516 on optical table (515)) and speculum B(523); Be arranged on light path one condensing lens (505), light path three condensing lenss (511), light path two condensing lenss (525) and light path four condensing lenss (532) on optical table (515), be arranged on the even light microscopic sheet of light path two (524) and the even light microscopic sheet of light path four (533) on optical table (515), the even light microscopic sheet of described light path two condensing lenss (525) and light path two (524) the composition even smooth condensing lens group of light path two (504), the even light microscopic sheet of described light path four condensing lenss (532) and light path four (533) the composition even smooth condensing lens group of light path four (510); Be arranged on respectively light path one swing arm (528) and light path three swing arms (529) on light path one turntable (506) and light path three turntables (509); Be arranged on respectively light path one small reflector (507) and light path three small reflectors (508) of light path one swing arm (528) end and light path three swing arms (529) end; Being arranged on respectively light path one switches slide unit (501) and light path three and light path four with light path two and switches light path one speculum (503) and light path three speculums (513) on slide unit (514); Be arranged on the speculum C(518 on light-emitting window slide unit (517)) and speculum D(522); Be arranged on the speculum E(520 on nc sliding table (521)); Be arranged on the inner light combination mirror (537) of laser apparatus (102); Be arranged on respectively light path three and light path four verification energy meters (527) and light path one and light path two verification energy meters (530) on light path three and light path four verification slide units (526) and light path one and light path two verification slide units (531); Be arranged on protective shield (534), shield cap (535) and light pipe (903) on optical table (515); Described speculum E(520) under the driving of servomotor or the knob of manual rotation servomotor rear end, can slide nc sliding table (521) is upper; Light-emitting window A and light-emitting window B are set on laser apparatus; As speculum E(520) while being in light-emitting window A right on, laser beam A is through speculum E(520) reflex to light combination mirror (537), then the laser reflecting through light combination mirror (537) and laser beam B are exported by light hole B; As speculum E(520) while being in the position between light-emitting window A and light-emitting window B, laser beam A and laser beam B are respectively from light-emitting window A and light-emitting window B output.

4. according to blisk laser shock peening method claimed in claim 3, 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 in working position, as speculum E(520) while being in A light-emitting window right on, laser beam A is through speculum E(520) reflection, to light combination mirror (537), the laser reflecting through light combination mirror (537) again and laser beam B are exported by light hole B, simultaneously as speculum C(518) while being in the rear of light hole B, the laser of B light hole output is through speculum C(518) reflection can reflex to speculum C(518) the speculum A(516 of left) on, simultaneously when light path three speculums (513) are in speculum A(516) when the right astern of reflected light path, speculum A(516) reflection come laser reflex on light path three condensing lenss (511) through light path three speculums (513), light path three swing arms (529) are put to light path three small reflectors (508) just in time when the front-right in light path three condensing lenss (511) output light path, light path three small reflectors (508) will be through the laser reflection of light path three condensing lenss (511) output to workpiece surface, the uniform circular light spot of light intensity that formation diameter is 2-5mm, the blade back trailing edge region (403) of processing aircraft engine leaf dish,

Described light path system (103) is switched to light path one (415) work and refers to: when light path three swing arms (529) are not in working position, as speculum E(520) while being in light-emitting window A right on, laser beam A is through speculum E(520) reflection, to light combination mirror (537), the laser reflecting through light combination mirror (537) again and laser beam B are exported by light hole B, simultaneously as speculum C(518) and speculum D(522) while being in respectively the right astern of light hole A and light hole B, the laser of light hole B output is through speculum D(522) reflective to speculum D(522) right-hand speculum B(523) on, simultaneously when light path one speculum (503) is in speculum B(523) when the right astern of reflected light path, speculum B(523) reflection come laser reflex on light path one condensing lens (505) through light path one speculum (503), simultaneously when light path one swing arm (528) is put to light path one small reflector (507) just in time when the front-left in light path one condensing lens (505) output light path, light path one small reflector (507) will be through the laser reflection of light path one condensing lens (505) output to workpiece surface, the uniform circular light spot of light intensity that formation diameter is 2-5mm, the leaf basin leading edge region (406) of processing aircraft engine leaf dish,

Described 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 arms (529) are not all in working position, as speculum E(520) while being in A light-emitting window right on, laser beam A is through speculum E(520) reflection, to light combination mirror (537), the laser reflecting through light combination mirror (537) again and laser beam B are exported by light hole B, simultaneously as speculum C(518) while being in the rear of light hole B, the laser of B light hole output is through speculum C(518) reflection can reflex to speculum C(518) the speculum A(516 of left) on, simultaneously when light path three speculums (513) are not in speculum A(516) when the right astern of reflected light path, speculum A(516) reflection come laser reflex in the even smooth condensing lens group of light path four (510) through light path four speculums (512), form the uniform square focus spot of light intensity of length of side 2-5mm, leaf basin trailing edge region (404) and the leaf basin blade tip region (405) of processing aircraft engine leaf dish,

Described 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 arms (529) are not all in working position, as speculum E(520) while being in light-emitting window A right on, laser beam A is through speculum E(520) reflection, to light combination mirror (537), the laser reflecting through light combination mirror (537) again and laser beam B are exported by light hole B, simultaneously as speculum C(518) and speculum D(522) while being in respectively the rear of light hole A and light hole B, the laser of B light hole output is through speculum D(522) reflective to speculum D(522) the speculum B(523 of front-right) on, simultaneously when light path one speculum (503) is not in speculum B(523) when the right astern of reflected light path, speculum B(523) reflection come laser reflex in the even smooth condensing lens group of light path two (504) through light path two-mirror (502), form the uniform square focus spot of light intensity of length of side 2-5mm, blade back leading edge region (401) and the blade back blade tip region (402) of processing aircraft engine leaf dish.

5. according to blisk laser shock peening method claimed in claim 4, it is characterized in that: to blisk carry out laser impact intensified before, first the light path three (409) to light path system, light path four (410), light path two (414) and light path one (415) are carried out verification, guarantee all can normally work.

6. according to blisk laser shock peening method claimed in claim 2, it is characterized in that: before the processing of blisk regional, first on region to be processed, pasting thickness is that black tape 100 μ m, that width is 14mm is as absorption layer, after this region processing is completed, remove the black tape on it.

7. according to blisk laser shock peening method claimed in claim 2, it is characterized in that: 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 even thickness.

8. according to blisk laser shock peening method claimed in claim 4, it is characterized in that: laser beam A and laser beam B are that input wavelength is that 1064nm, single pulse energy are that 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 size are the circular laser beam of 3mm.

9. according to blisk laser shock peening method claimed in claim 4, it is characterized in that: laser beam A and laser beam B are that input wavelength is that 1064nm, single pulse energy are that 3-20J, pulsewidth are 8-25ns, beam diameter < 27mm, the laser beam of angle of divergence < 3mrad, described light path four (410) and light path two (414) output single pulse energy 7-10J, pulsewidth 15-20ns, spot size are the square laser beam of length of side 3mm.

10. according to blisk laser shock peening method claimed in claim 1, it is characterized in that: the repetitive positioning accuracy of described track robot is ± 0.09mm.

11. according to blisk laser shock peening method claimed in claim 1, it is characterized in that: described laser impact intensified mode adopts track robot to move, and laser-impact mode is once processed, i.e. pointwise is processed.

12. according to blisk laser shock peening method claimed in claim 4, it is characterized in that: described laser impact intensified in, the overlapping rate of circular light spot is 20%-30%, the overlapping rate of square focus spot is 5%-15%.

13. according to the blisk laser shock peening method described in claim 12, 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, be the regional extent in blade periphery 12mm, blade root region does not process.

14. according to the blisk laser shock peening method described in claim 13, it is characterized in that: described desired trajectory refers to: blisk laser impact intensified, for the process zone of 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 to the processing from blade root direction to blade tip direction again of blade interior skew distance to a declared goal, reciprocal 4 times altogether; For the process zone of each blade tip, the precedence of shock peening is: the first processing from leading edge direction to trailing edge direction at blade tip place, then to the processing from leading edge direction to trailing edge direction again of blade interior skew distance to a declared goal, reciprocal 4 times altogether; Described distance to a declared goal refers to according to the overlapping rate of circular light spot or square focus spot and is offset to blade interior.

15. according to the blisk laser shock peening method described in claim 14, it is characterized in that: described blisk laser impact intensified, for the last processing together near blade interior, front 3 roads of energy Ratios energy used is low by 20%.