CN104148809A - Device and method for shocking and strengthening thin wall part edges through lasers - Google Patents
Device and method for shocking and strengthening thin wall part edges through lasers Download PDFInfo
- Publication number
- CN104148809A CN104148809A CN201410428081.5A CN201410428081A CN104148809A CN 104148809 A CN104148809 A CN 104148809A CN 201410428081 A CN201410428081 A CN 201410428081A CN 104148809 A CN104148809 A CN 104148809A
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- Prior art keywords
- laser
- fixed
- longitudinal carrier
- control lever
- close
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/356—Working by laser beam, e.g. welding, cutting or boring for surface treatment by shock processing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
Abstract
The invention discloses a device and method for shocking and strengthening thin wall part edges through lasers. The device comprises a surface path copy system and a laser shock system. The surface path copy system comprises a longitudinal support, an abutting device, a control rod, a control box, a fixing support and a workbench. The laser shock system comprises a pathway support, a motor set, a laser head and a shock workbench for placing parts to be shocked. According to the device and method for shocking and strengthening the thin wall part edges through the lasers, a theory of similar figures is mainly utilized, the surfaces of the parts to be shocked are tightly attached to the abutting device, the surface path copy system transmits the movement loci of attached blocks in the abutting device to the laser shock system, the movement loci of laser spots are kept pace with the closed blocks by adjusting movement of the laser head, and thus the purpose that laser shock and strengthening are conducted on the thin wall part edges is achieved. The device and method have the advantages of being low in cost, easy to operate and the like, and laser vertical incidence can be guaranteed.
Description
Technical field
The present invention relates to laser impact intensified field, specifically the device and method at a kind of laser impact intensified thin-walled parts edge.
Background technology
The turbomachineries such as large blower, compressor, aero-engine all have complex-curved blade, and have directly determined life-span and the quality of complete machine in the performance of blade and service life.In the course of the work, the edge of blade very easily produces and weares and teares and form micro-crack, and because edge blade thickness is relatively thin, thereby the crackle of edge very easily spreads the rapid inefficacy that causes blade, significantly reduces leaf longevity.
Reiforcing laser impact technology can be introduced residual compressive stress at surface of the work easily, thereby suppress surface of the work and produce the fatigue ruptures such as micro-crack, significantly extend the service life of workpiece, the developed countries such as the U.S. are widely used in reiforcing laser impact technology the high load capacity parts such as reinforcing stimulus impeller.
According to current research, the best results that incident laser is strengthened during perpendicular to surface of the work, and the uneven problem of the hot spot that oblique impact causes overlap joint problem and power density makes surface of the work be difficult to obtain the residual compressive stress of uniformity, piece surface exists the hidden danger of residual tension to be difficult to eliminate.
At present, domesticly can ensure that incident laser is few perpendicular to the laser-impact equipment on complex-curved surface all the time, the equipment that can realize this function mainly relies on the Five-axis linkage laser processing machine of external import, its cost is higher, be difficult to large-scale application, therefore, need to develop and a set ofly ensure that laser vertical is incident in the devices and methods therefor of surface of the work when can making laser complete complex curve path.
Summary of the invention
Overlap problem and the uneven problem of power density according to the hot spot causing due to oblique impact of above-mentioned proposition, make surface of the work be difficult to obtain the residual compressive stress of uniformity, piece surface exists the hidden danger of residual tension to be difficult to technology for eliminating problem, and a kind of low cost is provided, is applicable to the device and method at complex-curved surface laser impact strengthening thin-walled parts edge.The present invention mainly utilizes similar figures principle, will be by the walking path real-time Transmission of piece to laser-impact system by path dubbing system, thereby the motion path that makes laser facula with lean on the consistent realization of running orbit of piece to complex-curved shock peening.
The technological means that the present invention adopts is as follows:
The device at laser impact intensified thin-walled parts edge, comprises surperficial path dubbing system and laser-impact system, it is characterized in that:
Described surperficial path dubbing system comprises longitudinal carrier, is close to device, control lever, control box, fixed support and workbench; Described longitudinal carrier comprises longitudinal carrier I and longitudinal carrier II, described longitudinal carrier I and described longitudinal carrier II are individually fixed in horizontal guide rail I and horizontal guide rail II, longitudinal carrier is to be connected with the screw mandrel being arranged in horizontal guide rail by its bottom, thereby the driven by motor screw mandrel of horizontal guide rail one side rotation realizes the horizontal movement of longitudinal carrier, motor when work in horizontal guide rail I and horizontal guide rail II must synchronously rotate to guarantee that control lever is all the time perpendicular to the direction of motion of longitudinal carrier.
Described control lever is connected with described longitudinal carrier I and described longitudinal carrier II by slide block, in described longitudinal carrier I and described longitudinal carrier II, be equipped with described slide block, described control lever can horizontally slip in described slide block, and described slide block can slide up and down in longitudinal carrier.
Described slide block outside is provided with for the angular displacement sensor to described laser-impact system transmitted signal, and described angular displacement sensor is used for the stepper motor that records the corner of described control lever and send a signal to laser-impact system, to control the rotation of laser head.Described control lever middle part is provided with and is close to device, described in be close to device for being adjacent to reference to piece surface, described in be close between device and control lever as interference fit can drive control lever rotation.The tail end of described control lever is fixed in described control box, and described control box is for controlling the motion of laser head.Described control box is connected with described fixed support by six degree of freedom manipulator, described six degree of freedom manipulator guarantees that described control box can move with described control lever, and produces certain damping the pressure sensor in described control box can be played a role.Described workbench is positioned at described control lever below, be put on described workbench with reference to part, described in be close to device and be close to described with reference to piece surface by the gravity of described control lever;
Described laser-impact system comprises track support, group of motors, laser head and the impact workbench of placing for part to be impacted, described track support comprises base horizontal rail, is fixed on the vertical rail in described base horizontal rail and is fixed on the working track on described vertical rail, and described laser head is fixed on described working track; Described group of motors comprise be arranged in described base horizontal rail, control the motor I that described vertical rail moves forward and backward, be arranged on described vertical rail, control the motor II that described working track moves up and down and be fixed on described working track, control the motor III that described laser head moves left and right; On described laser head, be also provided with and control the motor IV that described laser head rotates.Laser is introduced laser head by optical fiber, and part to be impacted is placed on and impacts on workbench, and water jet is for forming water constraint layer at piece surface.
Further, the tail end of described control lever is T-shaped structure, and is arranged on up, down, left, right, before and after sensor in the box body of described control box and coordinates and control described laser head motion.Wherein, upper sensor, lower sensor are controlled respectively the rotating of motor II in laser-impact system, to realize moving up and down of laser head.Left sensor, right sensor are controlled respectively the rotating of motor III in laser-impact system, to realize moving left and right of laser head.Front sensor, rear sensor are controlled respectively the rotating of motor I in laser-impact system, to realize moving forward and backward of laser head.
Further, described in, be close to device by being fixed on base on described control lever, be fixed on described base lower end by piece and be fixed on and describedly form for clamping the described fixture with reference to part by piece two ends.Wherein, fixture can be made separately according to different parts.As an example of blower vane example its fixture can be by baffle plate, spring, form by piece, buffer substrate tablet.Be arranged on base bottom for being adjacent to piece surface by piece, it is vertical with piece surface that guarantee is close to device bottom surface, baffle plate is provided with spring, one end of spring is provided with buffer substrate tablet, and the effect of buffer substrate tablet is to compress and forces and be close to device along moving with reference to piece surface and then driving control lever to move with reference to part side.Control lever in motion is exerted pressure and is produced the motion of different motors in the signal of telecommunication and then control laser-impact system the sensor of different azimuth in control box.
The present invention also provides a kind of method of applying the laser impact intensified thin-walled parts of said apparatus edge, it is characterized in that: adopt be close to device near described with reference to piece surface, by surperficial path dubbing system by described be close in device by the walking path real-time Transmission of piece to laser-impact system, make the motion path of laser facula consistent with the running orbit by piece, complete complex-curved shock peening.
The present invention has the following advantages:
1, without three-dimensional modeling, directly by part or grinding tool as a reference, accurately copy piece surface track, and only need change with reference to part for different parts, shorten man-hour without further scanning programming.
2, guaranteed that based on similar figures principle in impact process, incident ray, all the time perpendicular to piece surface, has ensured impact effect.
3, do not need complicated control system and loaded down with trivial details programming, cost is low, easy to use.
The present invention can extensively promote in fields such as complex-curved shock peenings for the foregoing reasons, is particularly useful for strengthening the thin-walled parts edges such as blade.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the front view of path, the present invention surface dubbing system.
Fig. 2 is the top view of path, the present invention surface dubbing system.
Fig. 3 is the side view of longitudinal carrier of the present invention.
Fig. 4 is the structural representation of laser-impact system of the present invention.
Fig. 5 is the structural representation that the present invention is close to device.
Fig. 6 is the structural representation of control box of the present invention.
Fig. 7 is the schematic diagram of blower vane.
In figure: 1, longitudinal carrier 11, longitudinal carrier I 12, longitudinal carrier II 13, horizontal guide rail I 14, horizontal guide rail II 15, screw mandrel 16, motor 17, slide block 18, angular displacement sensor 2, be close to device 21, base 22, by piece 23, baffle plate 24, spring 25, buffer substrate tablet 3, control lever 4, control box 41, box body 42, upper sensor 43, front sensor 44, rear sensor 45, right sensor 46, lower sensor 47, left sensor I 48, left sensor II 5, fixed support 51, six degree of freedom manipulator 6, workbench 7, track support 71, base horizontal rail 72, vertical rail 73, working track 8, group of motors 81, motor I 82, motor II 83, motor III 84, motor IV 9, laser head 91, optical fiber 92, water jet 93, water constraint layer 94, absorbed layer 10, impact workbench 100, with reference to part 200, part 300 to be impacted, blower vane
Detailed description of the invention
The device at laser impact intensified thin-walled parts edge, comprises surperficial path dubbing system and laser-impact system.As shown in Figure 1, 2, described surperficial path dubbing system comprise longitudinal carrier 1, be close to device 2, control lever 3, control box 4, fixed support 5 and workbench 6; Described longitudinal carrier 1 comprises longitudinal carrier I 11 and longitudinal carrier II 12, described longitudinal carrier I 11 and described longitudinal carrier II 12 are individually fixed in horizontal guide rail I 13 and horizontal guide rail II 14, longitudinal carrier 1 be by its bottom be arranged on screw mandrel 15 in horizontal guide rail and be connected to realize and fix, thereby the motor 16 of horizontal guide rail one side drives screw mandrel 15 to rotate the horizontal movement that realizes longitudinal carrier 1, the motor 16 when work in horizontal guide rail I 13 and horizontal guide rail II 14 must synchronously rotate to guarantee that control lever 3 is all the time perpendicular to the direction of motion of longitudinal carrier 1.
As shown in Figure 3, described control lever 3 is connected with described longitudinal carrier I 11 and described longitudinal carrier II 12 by slide block 17, in described longitudinal carrier I 11 and described longitudinal carrier II 12, be equipped with described slide block 17, described control lever 3 can horizontally slip in described slide block 17, and described slide block 17 can slide up and down in longitudinal carrier 1.
Described slide block 17 outsides are provided with for the angular displacement sensor 18 to described laser-impact system transmitted signal, described angular displacement sensor 18 is for recording the corner of described control lever 3 and sending a signal to the motor IV 84 of laser-impact system, motor IV 84 adopts stepper motor, to control the rotation of laser head 9.
Described control lever 3 middle parts are provided with and are close to device 2, described in be close to device 2 for being adjacent to reference to part 100 surfaces, described in be close between device 2 and control lever 3 and rotate for interference fit can drive control lever 3.
The tail end of described control lever 3 is fixed in described control box 4, and described control box 4 is for controlling the motion of laser head 9.Described control box 4 is connected with described fixed support 5 by six degree of freedom manipulator 51, described six degree of freedom manipulator 51 guarantees that described control box 4 can move with described control lever 3, and produces certain damping the pressure sensor in described control box 4 can be played a role.
Described workbench 6 is positioned at described control lever 3 belows, be put on described workbench 6 with reference to part 100, described in be close to device 2 and be close to described with reference to part 100 surfaces by the gravity of described control lever 3;
The tail end of described control lever 3 is T-shaped structure, and is arranged on upper sensor 42, lower sensor 46, left sensor I 47, left sensor II 48, right sensor 45, front sensor 43, rear sensor 44 in the box body 41 of described control box 4 (as shown in Figure 6) and coordinates and control described laser head 9 and move.Wherein, upper sensor 42, lower sensor 46 are controlled respectively the rotating of motor II 82 in laser-impact system, to realize moving up and down of laser head 9.Left sensor I 47, left sensor II 48, right sensor 45 are controlled respectively the rotating of motor III 83 in laser-impact system, to realize moving left and right of laser head 9.Front sensor 43, rear sensor 44 are controlled respectively the rotating of motor I 81 in laser-impact system, to realize moving forward and backward of laser head 9.
Described be close to device 2 by being fixed on base 21 on described control lever 3, be fixed on described base 21 lower ends by piece 22 and be fixed on and describedly form for clamping the described fixture with reference to part 100 by piece 22 two ends.Wherein, fixture can be made separately according to different parts.Taking blower vane 300 (as shown in Figure 7) as example, its fixture (as shown in Figure 5) can be by baffle plate 23, spring 24, form by piece 22, buffer substrate tablet 25.Be arranged on base 21 bottoms for being adjacent to reference to part 100 surfaces by piece 22, it is vertical with piece surface 100 that guarantee is close to device 2 bottom surfaces, baffle plate 23 is provided with spring 24, one end of spring 24 is provided with buffer substrate tablet 25, and the effect of buffer substrate tablet 25 is to compress with reference to part 100 sides and forces and be close to device 2 along moving with reference to part 100 apparent motions and then drive control lever 3.Control lever 3 in motion is exerted pressure and is produced the motion of different motors in the signal of telecommunication and then control laser-impact system the sensor of control box 4 interior different azimuth.Meanwhile, angular displacement sensor 18 is controlled the rotation of motor IV 84 on laser head 9, realizes laser head 9 and the rotation of synchronizeing that is close to device 2, thereby ensures that incident laser is vertical with part to be impacted 200 surfaces.
As shown in Figure 4, described laser-impact system comprises track support 7, group of motors 8, laser head 9 and the impact workbench 10 of placing for part 200 to be impacted, described track support 7 comprises base horizontal rail 71, is fixed on the vertical rail 72 in described base horizontal rail 71 and is fixed on the working track 73 on described vertical rail 72, and described laser head 9 is fixed on described working track 73; Described group of motors 8 comprise be arranged in described base horizontal rail 71, control the motor I 81 that described vertical rail 72 moves forward and backward, be arranged on described vertical rail 72, control the motor II 82 that described working track 73 moves up and down and be fixed on described working track 73, control the motor III 83 that described laser head 9 moves left and right; On described laser head 9, be also provided with and control the motor IV 84 that described laser head 9 rotates.Laser is introduced laser head 9 by optical fiber 91, and part 200 to be impacted is placed on and impacts on workbench 10, and water jet 92 is for forming water constraint layer 93 on part to be impacted 200 surfaces.
A kind of method of applying the laser impact intensified thin-walled parts of said apparatus edge, employing be close to device 2 near described with reference to part 100 surfaces, by surperficial path dubbing system by described be close in device 2 by the walking path real-time Transmission of piece 22 to laser-impact system, make the motion path of laser facula consistent with the running orbit by piece 22, complete complex-curved shock peening.
Laser impact intensified as example taking blower vane 300 edges (as shown in Figure 7) below, its implementation process is as follows:
(1) before laser-impact, get one and be arranged on workbench 6 with reference to part 100, adjust the position that is close to device 2, it is close to reference to part 100 surfaces.
(2) part 200 to be impacted is arranged on impact workbench 10, at part 200 surface spraying absorbed layers 94 to be impacted, water jet 92 water outlets, form water constraint layers 93 on part to be impacted 200 surfaces.
(3) initial position of adjustment laser head 9, makes it consistent with the relative position that is close to device 2.
(4) rotating speed that goes out light frequency and group of motors that sets laser head 9 is to realize the part 200 different laser facula overlapping rates in surface to be impacted.Be p if go out light frequency, the movement velocity of longitudinal carrier 1 is v, and spot diameter is d, and overlapping rate is s, the movement velocity v=spd of longitudinal carrier 1.Starter motor 16, motor 16 drives longitudinal carrier I 11 and longitudinal carrier II 12 to do horizontal movement by screw mandrel 15, drives and is close to device 2 edges with reference to part 100 surface slidings.Control lever 3 and control box 4 act synergistically driving laser head 9 be close to device 2 and be synchronized with the movement, the scanning of laser beam to blade edge is rotated and then realized to the motor IV 84 that angular displacement sensor 18 is controlled on laser head 9 simultaneously, in motion, laser head 9 keeps certain light frequency that goes out, and forms and treats the shock peening that impacts part 200 surfaces.
The above; it is only preferably detailed description of the invention of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (4)
1. the device at laser impact intensified thin-walled parts edge, comprises surperficial path dubbing system and laser-impact system, it is characterized in that:
Described surperficial path dubbing system comprises longitudinal carrier, is close to device, control lever, control box, fixed support and workbench, described longitudinal carrier comprises longitudinal carrier I and longitudinal carrier II, described longitudinal carrier I and described longitudinal carrier II are individually fixed in horizontal guide rail I and horizontal guide rail II, described control lever is connected with described longitudinal carrier I and described longitudinal carrier II by slide block, described slide block outside is provided with for the angular displacement sensor to described laser-impact system transmitted signal, described control lever middle part is provided with and is close to device, the tail end of described control lever is fixed in described control box, described control box is connected with described fixed support by six degree of freedom manipulator, described workbench is positioned at described control lever below, be put on described workbench with reference to part, the described device that is close to is close to described with reference to piece surface by the gravity of described control lever,
Described laser-impact system comprises track support, group of motors, laser head and the impact workbench of placing for part to be impacted, described track support comprises base horizontal rail, is fixed on the vertical rail in described base horizontal rail and is fixed on the working track on described vertical rail, and described laser head is fixed on described working track; Described group of motors comprise be arranged in described base horizontal rail, control the motor I that described vertical rail moves forward and backward, be arranged on described vertical rail, control the motor II that described working track moves up and down and be fixed on described working track, control the motor III that described laser head moves left and right; On described laser head, be also provided with and control the motor IV that described laser head rotates.
2. the device at a kind of laser impact intensified thin-walled parts according to claim 1 edge, it is characterized in that: the tail end of described control lever is T-shaped structure, and be arranged on up, down, left, right, before and after sensor in the box body of described control box and coordinate and control described laser head motion.
3. the device at a kind of laser impact intensified thin-walled parts according to claim 1 edge, is characterized in that: described in be close to device by being fixed on base on described control lever, be fixed on described base lower end by piece and be fixed on and describedly form for clamping the described fixture with reference to part by piece two ends.
4. the method at the laser impact intensified thin-walled parts of the device edge described in an application rights requirement 1, it is characterized in that: adopt be close to device near described with reference to piece surface, by surperficial path dubbing system by described be close in device by the walking path real-time Transmission of piece to laser-impact system, make the motion path of laser facula consistent with the running orbit by piece, complete complex-curved shock peening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428081.5A CN104148809A (en) | 2014-08-27 | 2014-08-27 | Device and method for shocking and strengthening thin wall part edges through lasers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428081.5A CN104148809A (en) | 2014-08-27 | 2014-08-27 | Device and method for shocking and strengthening thin wall part edges through lasers |
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| CN104148809A true CN104148809A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410428081.5A Pending CN104148809A (en) | 2014-08-27 | 2014-08-27 | Device and method for shocking and strengthening thin wall part edges through lasers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825213B (en) * | 2017-02-27 | 2018-05-15 | 广东工业大学 | Vertical turnover panel Integral Wing Panel laser shot forming device and processing method |
| CN111575476A (en) * | 2020-04-09 | 2020-08-25 | 广东镭奔激光科技有限公司 | Laser shock peening method for blade edge |
| CN115572812A (en) * | 2021-06-21 | 2023-01-06 | 中国科学院沈阳自动化研究所 | Efficient laser shock peening control method based on technological parameter matching |
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| CN106825213B (en) * | 2017-02-27 | 2018-05-15 | 广东工业大学 | Vertical turnover panel Integral Wing Panel laser shot forming device and processing method |
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| CN111575476B (en) * | 2020-04-09 | 2021-10-26 | 广东镭奔激光科技有限公司 | Laser shock peening method for blade edge |
| CN115572812A (en) * | 2021-06-21 | 2023-01-06 | 中国科学院沈阳自动化研究所 | Efficient laser shock peening control method based on technological parameter matching |
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