CN210341016U - Scanning type laser shock strengthening device - Google Patents
Scanning type laser shock strengthening device Download PDFInfo
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- CN210341016U CN210341016U CN201921084979.XU CN201921084979U CN210341016U CN 210341016 U CN210341016 U CN 210341016U CN 201921084979 U CN201921084979 U CN 201921084979U CN 210341016 U CN210341016 U CN 210341016U
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Abstract
The utility model relates to a metal surface treatment, in particular to a scanning laser shock peening device, which comprises a laser, a light guide device, a constraint layer loading device, a one-dimensional scanning galvanometer and a focusing device; the light guide device is arranged between the laser and the one-dimensional scanning galvanometer; the metal part is positioned on the output light path of the one-dimensional scanning galvanometer; the metal part is provided with a restraint layer and a motion clamping device; the focusing device is arranged on a light path between the light guide device and the metal part. The utility model discloses a high repetition frequency low energy laser shock peening method, the frequency is higher, and machining efficiency has very big improvement.
Description
Technical Field
The utility model belongs to the metal surface treatment field, concretely relates to scanning formula laser shock peening device.
Background
The laser shock strengthening technology is a technology for improving the fatigue resistance, wear resistance and corrosion resistance of metal materials by using plasma shock waves generated by strong laser beams. It has the outstanding advantages of non-contact, no heat affected zone, strong controllability, obvious strengthening effect, etc. The coating on the surface of the metal workpiece mainly plays a role in protecting the workpiece from being burnt by laser and enhancing the absorption of laser energy, and the coating materials commonly used at present comprise black paint, aluminum foil and the like. The confinement layer can confine the expansion of plasma so as to improve the peak pressure of shock wave, and can prolong the action time of the shock wave through reflection of the shock wave, and the current commonly used confinement layer is flowing water, K9 glass.
The laser shock strengthening technology enables the surface layer of the metal material to generate high-strain plastic deformation to form large residual compressive stress, and meanwhile, the microstructure of the metal material generates large change, so that the surface treatment technology can obviously improve the fatigue resistance of the metal material, such as external force damage resistance, corrosion resistance and the like.
At present laser shock peening device is mostly low repetition frequency, high energy solid laser, and laser is fixed motionless through the focus back, accomplishes laser shock peening processing by the motion that motion clamping system drove the part, and laser shock peening processing efficiency is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of the inefficiency of laser shock peening at least, providing a scanning type laser shock peening device. The purpose is realized by the following technical scheme:
the utility model provides a scanning laser shock strengthening device, which comprises a laser, a light guide device, a constraint layer loading device, a one-dimensional scanning galvanometer and a focusing device;
the light guide device is arranged between the laser and the one-dimensional scanning galvanometer;
the metal part is positioned on the output light path of the one-dimensional scanning galvanometer; the metal part is provided with a restraint layer and a motion clamping device;
the focusing device is arranged on a light path between the light guide device and the metal part.
The device of the utility model controls the rotation of the motor by controlling the one-dimensional scanning galvanometer, and controls the scanning angle of the one-dimensional scanning galvanometer, thereby reflecting laser at different angles and directions, realizing the one-dimensional high-speed scanning of the laser and expanding the action range of the laser; the motion clamping device is arranged on the metal part and used for fixing the metal part and supporting the metal part to move, and the motion track can be designed by matching with the one-dimensional scanning galvanometer and the processing requirement of the metal part; the combination of the one-dimensional scanning galvanometer and the moving clamping device enables both laser and metal parts to have the angle adjustable function, greatly facilitates laser shock peening processing, and improves processing efficiency. In addition, the matching degree and flexibility between the laser and the metal part are improved through the angle matching of the one-dimensional scanning galvanometer and the motion clamping device, and the laser shock peening processing of the metal part with the complex curved surface is facilitated.
The utility model discloses a further preferred scheme is: the motion clamping device is a mechanical arm. The arm has good fixed performance, but angle regulation wide range when, can realize the omnidirectional position adjustment of metal part to the laser of different angles of adaptation.
The utility model discloses a further preferred scheme is: the working frequency of the laser is 1-20000Hz, the energy is 20mJ-20J, and the pulse width is ns level. The laser with high working frequency can improve the processing efficiency of laser shock peening, and the high repetition frequency low energy laser is rarely applied to the laser shock peening; and the machining efficiency is improved by combining the motion clamping device of the metal part and the one-dimensional scanning galvanometer.
The utility model discloses a further preferred scheme is: the light guide device is provided with an optical element for changing the quality or the shape of the laser beam, and the light guide device transmits laser and shapes the laser simultaneously.
The utility model discloses a further preferred scheme is: the light guide device is a reflector, and the focusing device is arranged on a light path between the one-dimensional scanning galvanometer and the metal part. The mirror is suitable for high energy laser transmission.
The utility model discloses a further preferred scheme is: the light guide device is an optical fiber. The optical fiber is suitable for low-energy laser transmission.
The utility model discloses a further preferred scheme is: the focusing device can be arranged on the input laser light path of the one-dimensional scanning galvanometer or on the output (reflected) laser light path of the one-dimensional scanning galvanometer
The utility model discloses a further preferred scheme is: the focusing device is a field lens.
The utility model discloses a further preferred scheme is: the focusing device is a focusing lens. When the laser emits low repetition frequency laser, for example, below 50Hz, a common focusing mirror can be adopted behind the one-dimensional mirror, and the focusing mirror can deflect along with the one-dimensional vibrating mirror, so that the processing cost is reduced.
The utility model discloses a further preferred scheme is: the device also comprises a water restraint layer loading device, and the restraint layer loading device is connected with a water purification device. The restraint layer loading device loads a restraint layer on the surface of the metal part, and water with low cost and good effect is used as the restraint layer.
Compared with the prior art, the beneficial effects of the utility model reside in that:
1. the device of the utility model controls the rotation of the motor by controlling the one-dimensional scanning galvanometer, and controls the scanning angle of the one-dimensional scanning galvanometer, thereby reflecting laser at different angles and directions, realizing the one-dimensional high-speed scanning of the laser and expanding the action range of the laser; the motion clamping device is arranged on the metal part and used for fixing the metal part and supporting the metal part to move, and the motion track can be designed by matching with the one-dimensional scanning galvanometer and the processing requirement of the metal part; the combination of the one-dimensional scanning galvanometer and the moving clamping device enables both laser and metal parts to have the angle adjustable function, greatly facilitates laser shock peening processing, and improves processing efficiency.
2. The utility model discloses a device has improved matching degree and flexibility between laser and the metal part through the cooperation of one-dimensional scanning galvanometer and both angles of motion clamping device, is convenient for carry out laser shock peening processing to the metal part of complicated curved surface.
3. The utility model discloses a device practical high repetition frequency low energy laser output laser, high operating frequency brings high machining efficiency.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Like reference numerals refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of the device of the present invention;
FIG. 2 is a schematic view of a light guide device, in which (1) is a schematic view of guiding light by a lens and (2) is a schematic view of guiding light by an optical fiber;
FIG. 3 is a schematic diagram of the position of the focusing device, wherein (1) the focusing device is disposed on the input laser path of the one-dimensional scanning galvanometer, (2) the field lens is disposed on the reflection light path of the one-dimensional scanning galvanometer, and (3) the telecentric field lens is disposed on the reflection light path of the one-dimensional scanning galvanometer;
FIG. 4 is a schematic view of water restriction loading.
The reference symbols in the drawings denote the following:
1. a laser; 2. a light guide device; 3. a one-dimensional scanning galvanometer; 4. a focusing device; 5. a metal part; 6. a motion clamping device; 7. a water purification device; 8. a water restraint loading device; 9. a control device; 10. a mirror; 11. a lens transfer shaping device; 12. an optical fiber; 13. an optical fiber transmission shaping device; 14. a focusing and shaping device; 15. a field lens; 16. a telecentric field lens; 17. a water spray nozzle.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
As shown in fig. 1, a scanning laser shock peening apparatus of this embodiment includes a laser 1, a light guide device 2, a water constraint layer loading device 8, a one-dimensional scanning galvanometer 3, and a focusing device 4.
The light guide device 2 adopts a reflector 10, which is arranged between the laser 1 and the one-dimensional scanning galvanometer 3, and an optical element for changing the beam quality or the beam shape is also arranged between the light guide device 2 and the one-dimensional scanning galvanometer 3. The metal part 5 is positioned on the output light path of the one-dimensional scanning galvanometer 3; the metal part 5 has a constraining layer and is provided with a moving clamping device 6. The focusing and shaping device 14 is disposed on the input laser light path of the one-dimensional scanning galvanometer 3, as shown in fig. 3 (1).
As shown in fig. 2(1), the mirror 10 is used in combination with a lens transmission shaping device 11 as an optical element for changing the beam quality or beam shape to shape and transmit the laser light output from the laser 1. Other hard light guides may also be used for the light guide 2.
The laser 1 adopts a high repetition frequency and low energy laser with the frequency of 50-20000 Hz. The laser 1 with high working frequency can improve the processing efficiency of laser shock peening, and the high repetition frequency low energy laser is rarely applied to the laser shock peening; and the processing efficiency is improved by 20-50% by combining the moving clamping device 6 of the metal part 5 and the one-dimensional scanning galvanometer 3. The one-dimensional scanning galvanometer 3 comprises a motor which is designed integrally therewith.
The restraining layer on the surface of the metal part 5 is loaded through a water restraining layer loading device 8, the water restraining layer loading device 8 is of a fixed structure and is connected with a water purifying device 7, and the water purifying device 7 has a multi-stage filtering function and provides purified water required by the water restraining layer loading device 8; the water restraining layer loading device 8 comprises a water nozzle 17, and the water nozzle 17 loads purified water on the surface of the metal part 5, as shown in fig. 4.
The motion clamping device 6 is a mechanical arm or a motion platform with a rotary motion function, and can also be other motion clamping devices with similar functions in the prior art; the corresponding motion track can be set according to the surface appearance of the metal part 5.
Other optical elements having a focusing function may be used for the focusing device 4.
The device further comprises a control device 9, and the control device 9 is respectively connected with the laser 1, the one-dimensional scanning galvanometer 3, the motion clamping device 6 and the water constraint layer loading device 8. The control device 9 controls the above components to work cooperatively, so that the laser shock peening efficiency is improved.
Example 2
The scanning laser shock peening apparatus of the present embodiment has substantially the same structure as that of embodiment 1, except that:
the focusing device 4 is disposed on the output (reflected) laser light path of the one-dimensional scanning galvanometer 3, as shown in fig. 3 (2).
Example 3
The scanning laser shock peening apparatus of the present embodiment has substantially the same structure as that of embodiment 1, except that:
the focusing device 4 is a telecentric field lens 16 and is disposed on the output (reflected) laser light path of the one-dimensional scanning galvanometer 3, as shown in fig. 3 (3).
Example 4
The scanning laser shock peening apparatus of the present embodiment has substantially the same structure as that of embodiment 1, except that:
the laser 1 is a low repetition frequency, high energy laser of 50Hz or less.
As shown in fig. 2(2), the light guide device 2 adopts an optical fiber 12 or other flexible light guide device, and the optical fiber 12 cooperates with the optical fiber transmission shaping device 13 to shape and transmit the laser light output by the laser 1.
The focusing device 4 is a common focusing mirror, is arranged on a light path between the one-dimensional scanning galvanometer 3 and the metal part 5, and moves and deflects along with the one-dimensional scanning galvanometer 3.
The water confinement layer loading device 8 is a movable structure.
The laser 1, the light guide device 2, the one-dimensional scanning galvanometer 3, the focusing device 4, the motion clamping device 6, the water purifying device 7 and the water constraint loading device 8 in the embodiments 1-4 can be obtained by commercial products.
The working principle is as follows: the laser 1 outputs laser; the light is shaped and transmitted to a one-dimensional scanning galvanometer 3 through a light guide device 2; the one-dimensional scanning galvanometer 3 controls the reflection angle by controlling the rotation of a motor to reflect the laser; the focusing 4 focuses the laser light to act on the surface of the part 5.
The water purification device 7 provides purified water meeting the requirements, and the water constraint layer is loaded on the surface of the metal part 5 through the cooperation of the water constraint loading device 8 and is matched with the focusing light spots for processing; the metal part 5 is fixed on the motion clamping device 6 and moves along with the motion clamping system; the motion clamping device 6 can be matched with the one-dimensional scanning galvanometer 3 to set a proper motion path so as to realize laser shock peening processing on the surface of the metal part 5;
and the control device 9 controls the output of the laser 1, the reflection of the one-dimensional scanning galvanometer 3, the movement of the movement clamping device 6, the switch of the water purification device 7, the loading of the water constraint layer loading device 8 and the cooperative work of all parts to finish laser shock strengthening and the like on the surface of the metal part 5. In the structure of the low-frequency-repetition laser, the focusing device 4 can move along with the deflection of the one-dimensional scanning galvanometer system 3.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A scanning type laser shock peening device is characterized by comprising a laser, a light guide device, a constraint layer loading device, a one-dimensional scanning galvanometer and a focusing device;
the light guide device is arranged between the laser and the one-dimensional scanning galvanometer;
the metal part is positioned on the output light path of the one-dimensional scanning galvanometer; the metal part is provided with a restraint layer and a motion clamping device;
the focusing device is arranged on a light path between the light guide device and the metal part.
2. The scanning laser shock peening apparatus of claim 1, wherein the motion clamping device is a robotic arm.
3. The scanning laser shock peening apparatus of claim 1, wherein the laser has an operating frequency of 1-20000Hz, an energy of 20mJ-20J, and a pulse width of ns order.
4. The scanning laser shock peening apparatus of claim 1, wherein the light guide device is provided with an optical element that changes the laser beam quality or beam shape.
5. The scanning laser shock peening apparatus of claim 1, wherein the light guide device is a mirror.
6. The scanning laser shock peening apparatus of claim 1, wherein the light guide is an optical fiber.
7. The scanning laser shock peening apparatus of claim 1, wherein the focusing device is a field lens.
8. The scanning laser shock peening apparatus of claim 1, wherein the focusing device is a common focusing mirror.
9. The scanning laser shock peening apparatus of claim 1, further comprising a water confinement layer loading apparatus, wherein the confinement layer loading apparatus is connected with a water purification apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084979.XU CN210341016U (en) | 2019-07-11 | 2019-07-11 | Scanning type laser shock strengthening device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921084979.XU CN210341016U (en) | 2019-07-11 | 2019-07-11 | Scanning type laser shock strengthening device |
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| CN210341016U true CN210341016U (en) | 2020-04-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205478A (en) * | 2019-07-11 | 2019-09-06 | 西安天瑞达光电技术股份有限公司 | A kind of scanning type laser shock peening device |
| CN113981206A (en) * | 2021-12-08 | 2022-01-28 | 南京先进激光技术研究院 | Portable laser shock peening device and using method |
-
2019
- 2019-07-11 CN CN201921084979.XU patent/CN210341016U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205478A (en) * | 2019-07-11 | 2019-09-06 | 西安天瑞达光电技术股份有限公司 | A kind of scanning type laser shock peening device |
| CN110205478B (en) * | 2019-07-11 | 2024-03-26 | 西安天瑞达光电技术股份有限公司 | Scanning type laser shock strengthening device |
| CN113981206A (en) * | 2021-12-08 | 2022-01-28 | 南京先进激光技术研究院 | Portable laser shock peening device and using method |
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