Laser shock peening equipment

The problem of raw material position displacement in laser shock peening equipment has been solved by the limiting structure and adjustable clamping device, realizing stable clamping and efficient cleaning of raw materials of different sizes, improving processing accuracy and efficiency, expanding the application range of the device, and optimizing the user experience.

CN224077495UActive Publication Date: 2026-04-03GUANGZHOU JIANCHENG IND LASER TECHNOLOGY DEVELOPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing laser shock peening equipment suffers from low precision, surface defects, and inconvenient clamping due to raw material displacement during processing, especially in high-speed motion and complex surface processing, where the equipment is difficult to use.

Method used

By employing a limiting structure and an adjustable clamping device, combined with a waste collection and discharge system, it achieves stable clamping and efficient cleaning of raw materials of different sizes. The position of the laser instrument is adjusted by a servo motor and an electric threaded rod, thereby improving processing accuracy and efficiency.

Benefits of technology

It achieves stable clamping of raw materials of different sizes, improves processing accuracy and efficiency, reduces the labor intensity of workers, expands the application range of the device, and optimizes the user experience.

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Abstract

The utility model relates to the technical field of machining, and discloses laser shock peening equipment which comprises a machining box, a laser shock peening device and a laser shock peening device. The limiting structure comprises a first limiting part and a second limiting part, the first limiting part comprises a second fixing frame plate arranged in the machining box, four sets of second fixing plates are fixedly installed in the second fixing frame plate, and nine sets of first clamping plates are arranged among the four sets of second fixing plates; two groups of damping spring rods are arranged between every two groups of first clamping plates, and the total number of the groups of damping spring rods is twenty; and the second limiting part comprises a first fixing frame plate arranged in the processing box, two sets of first fixing plates are fixedly installed in the first fixing frame plate, and first clamping grooves are formed in the first fixing plates, so that the purpose of clamping and fixing the raw materials is achieved, the raw materials of different sizes are placed according to needs, and the machining efficiency is improved. The use flexibility of the device is improved, the application range of the device is widened, and the raw material fixing effect of the device is improved.
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Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, specifically, it relates to a laser shock strengthening device. Background Technology

[0002] Bearing rings are crucial components in mechanical equipment, and their surface quality and performance directly affect the reliability and lifespan of the entire equipment. Traditional surface finishing methods, such as roll forming and vibration finishing, can improve surface roughness and stress distribution, but they have limitations in improving fatigue resistance, wear resistance, and stress corrosion resistance.

[0003] Laser shock peening is a novel surface strengthening technology with significant advantages. Its basic principle involves irradiating a metal surface with a short-pulse, high-peak-power-density laser. The protective layer coated on the metal surface absorbs the laser energy and undergoes explosive vaporization, generating a high-temperature, high-pressure plasma. This plasma is constrained by the confinement layer, forming a high-pressure shock wave that propagates into the material. The force effect of the shock wave induces plastic deformation on the material's surface, thereby significantly improving the metal material's fatigue resistance, wear resistance, and stress corrosion resistance.

[0004] The utility model with announcement number CN2 First Card Slot (16) 566580U proposes a five-axis machine tool type laser shock strengthening equipment, including a five-axis CNC machine tool, a workpiece fixture, a laser, a laser beam guide device, a laser focusing device, a water purification system, a water constraint layer loading device, and a laser shock strengthening control system. The workpiece fixture is installed on the C-axis rotary table to hold the workpiece. The laser beam guide device guides the laser emitted by the laser to the B-axis device, and then the laser focusing device focuses it onto the workpiece surface. The water purification system is connected to the water constraint layer loading device, which loads a water constraint layer onto the workpiece surface. The laser shock strengthening control system is connected to the laser, the five-axis CNC machine tool, and the water constraint layer loading device to complete the automated processing of laser shock strengthening. This utility model solves the problems of low repeatability and difficulty in offline programming of complex surfaces when laser shock strengthening equipment based on robotic arms or coordinate robots performs small spot impacts.

[0005] However, the aforementioned patent still has the following problems: Although the patent uses a workpiece fixture and a C-axis rotary table to hold the workpiece, in actual processing, the raw material may still experience slight positional shifts due to the strong vibrations and impacts generated by the laser shock. This shift not only affects the accuracy and consistency of laser processing but may also lead to defects or flaws on the surface of the processed bearing rings. During laser processing, the raw material needs to be cooled by blowing air and debris removed. While this step helps reduce the temperature of the workpiece surface and remove debris, it may also adversely affect the placement of the raw material. Especially in high-speed motion and complex surface processing, the airflow generated by blowing air may interfere with the fixation of the raw material, causing the material to shift or wobble. The device has a single clamping position when placing raw materials, making it unsuitable for clamping multiple sets of raw materials of different sizes, resulting in inconvenience in its use.

[0006] In view of this, this utility model is hereby proposed. Utility Model Content

[0007] To solve the aforementioned technical problem of raw material positional misalignment, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A laser shock peening device, comprising:

[0009] The processing box is placed on the ground.

[0010] The limiting structure includes a first limiting part and a second limiting part. The first limiting part includes a second fixed frame plate disposed inside the processing box. Four sets of second fixed plates are fixedly installed inside the second fixed frame plate. Nine sets of first clamping plates are disposed between the four sets of second fixed plates. Two sets of damping spring rods are disposed between every two sets of first clamping plates, for a total of twenty sets of damping spring rods. The second limiting part includes a first fixed frame plate disposed inside the processing box. Two sets of first fixed plates are fixedly installed inside the first fixed frame plate. A first snap-fit ​​groove is opened inside the first fixed plate. Twelve sets of first fixing strips are fixedly installed inside the first fixed frame plate.

[0011] In a preferred embodiment of the present invention, the second limiting part further includes a first snap-fit ​​plate fixedly installed at the bottom of the second fixed frame plate. Four sets of first snap-fit ​​blocks are fixedly installed at the bottom of the first snap-fit ​​plate. The first snap-fit ​​blocks are snap-fitted into the inside of the first snap-fit ​​groove. The first snap-fit ​​plate is snap-fitted into the inside of the first fixed frame plate. Two sets of handles are fixedly installed at the top of the second fixed frame plate.

[0012] In a preferred embodiment of this utility model, a swing motor is fixedly installed on one side of the outer wall of the processing box, and a set of first connecting rods are fixedly installed on both sides of the outer wall of the first fixed frame plate. The first connecting rods are rotatably installed inside the processing box. A second connecting rod is fixedly installed at one end of the set of first connecting rods. The output shaft of the second connecting rod is fixedly connected to one end of the second connecting rod through a connecting shaft. A filter material perforated plate is fixedly installed inside the processing box. A hole is opened on one side of the outer wall of the processing box, and a discharge pipe is fixedly installed in the hole.

[0013] In a preferred embodiment of this utility model, a first rotating rod is rotatably installed inside the processing box, a first servo motor is fixedly installed on one outer wall of the processing box, the output shaft of the first servo motor is fixedly connected to one end of the first rotating rod through a coupling, four sets of stirring blades are fixedly installed on the outer wall of the first rotating rod, five sets of third fixing plates are fixedly installed inside the processing box, four sets of partitions are fixedly installed on the outer wall of the third fixing plates, and holes are opened inside the third fixing plates. The first rotating rod is disposed in the holes inside the third fixing plates.

[0014] In a preferred embodiment of this utility model, a fourth fixing plate is fixedly installed on one outer wall of the processing box, and a first electrical control box is fixedly installed on one outer wall of the fourth fixing plate. An electric push rod is provided inside the fourth fixing plate. The first electrical control box is electrically connected to the electric push rod. A first moving block is fixedly installed on the top of the electric push rod. A guide rod is provided inside the fourth fixing plate. A hole is opened inside the first moving block, and the guide rod is located in the hole inside the first moving block.

[0015] In a preferred embodiment of this utility model, a support plate is fixedly installed on the top of the first movable block, a limiting groove is opened inside the support plate, a second movable block is arranged in the limiting groove, a threaded sleeve is rotatably installed inside the second movable block, an electric threaded rod is rotatably installed inside the limiting groove, and the electric threaded rod is arranged inside the threaded sleeve.

[0016] In a preferred embodiment of this utility model, a second electrical control box is fixedly installed on the top of the support plate and is electrically connected to an electric threaded rod. A third electrical control box is fixedly installed on the top of the second moving block and a laser device is fixedly installed on the bottom of the second moving block. The third electrical control box is electrically connected to the laser device. A wind box is fixedly installed on one outer wall of the support plate and a duct is fixedly installed on one outer wall of the wind box.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. To achieve the purpose of clamping and fixing raw materials, and to place raw materials of different sizes as needed, thereby improving the flexibility of the device, expanding its applicability, and enhancing its fixing effect on raw materials.

[0019] 2. To achieve the purpose of collecting and discharging waste, improve the efficiency of the equipment in cleaning waste, facilitate the rapid cleaning of waste, reduce the workload of workers, and improve the flexibility of equipment use.

[0020] 3. To achieve the purpose of moving the laser module, improve the processing efficiency of raw materials, increase the raw material processing range of the device, improve the convenience of using the device, and optimize the user experience of the device.

[0021] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 This is a front view of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the fourth fixing plate structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the first rotating rod structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the damping spring rod structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the second fixed frame plate structure of this utility model;

[0029] Figure 7 This is a schematic diagram of the first fixing strip structure of this utility model.

[0030] In the diagram: 10. Processing box; 11. Swing motor; 12. First fixed frame plate; 13. First connecting rod; 14. Second connecting rod; 15. First fixed plate; 16. First snap-fit ​​groove; 17. First fixing strip; 18. Second fixed frame plate; 19. First snap-fit ​​plate; 20. First snap-fit ​​block; 21. Second fixed plate; 22. First clamping plate; 23. Damping spring rod; 24. Handle; 25. Filter media perforated plate; 26. First servo... 27. Motor; 28. First rotating rod; 29. ​​Stirring blade; 30. Third fixing plate; 31. Partition plate; 32. Discharge pipe; 33. Fourth fixing plate; 34. First electrical control box; 35. Electric push rod; 36. First moving block; 37. Guide rod; 38. Support plate; 39. Second electrical control box; 40. Electric threaded rod; 41. Second moving block; 42. Third electrical control box; 43. Laser device; 44. Air box; 45. Air duct. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0032] Example 1: A laser shock peening device, specifically as follows Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the system includes a processing box 10, which is placed on the ground; and a limiting structure, comprising a first limiting part and a second limiting part. The first limiting part includes a second fixed frame plate 18 disposed inside the processing box 10. Four sets of second fixed plates 21 are fixedly installed inside the second fixed frame plate 18, and nine sets of first clamping plates 22 are disposed between the four sets of second fixed plates 21. Two sets of damping spring rods 23 are disposed between every two sets of first clamping plates 22, for a total of twenty sets of damping spring rods 23. The second limiting part includes a first fixed frame plate 12 disposed inside the processing box 10. Two sets of first fixed plates 15 are fixedly installed inside the first fixed frame plate 12. A first snap-fit ​​groove 16 is opened inside the first fixed frame plate 15, and twelve sets of first fixing strips 17 are fixedly installed inside the first fixed frame plate 12. The limiting structure limits and fixes raw materials of different sizes. The raw materials are placed between the two sets of first clamping plates 22, and the damping spring rods 23 drive the two sets of first clamping plates 22 to clamp the raw materials.

[0033] Specifically, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the second limiting part also includes a first snap-fit ​​plate 19 fixedly installed at the bottom of the second fixed frame plate 18. Four sets of first snap-fit ​​blocks 20 are fixedly installed at the bottom of the first snap-fit ​​plate 19. The first snap-fit ​​blocks 20 are snap-fitted into the inside of the first snap-fit ​​groove 16. The first snap-fit ​​plate 19 is snap-fitted into the inside of the first fixed frame plate 12. Two sets of handles 24 are fixedly installed at the top of the second fixed frame plate 18. The first snap-fit ​​plate 19 is placed above the first fixed plate 15, and the first snap-fit ​​blocks 20 are snap-fitted into the inside of the first snap-fit ​​groove 16. The bottom of the raw material is supported by the first fixing strip 17.

[0034] Based on the above, the structure of the processing box 10, the first fixed frame plate 12, the first fixed plate 15, the first snap-fit ​​groove 16, the first fixed strip 17, the second fixed frame plate 18, the first snap-fit ​​plate 19, the first snap-fit ​​block 20, the second fixed plate 21, the first clamping plate 22 and the damping spring rod 23 achieves the purpose of clamping and fixing raw materials. It allows for the placement of raw materials of different sizes as needed, improving the flexibility of the device, expanding its applicability, and enhancing its fixing effect on raw materials.

[0035] Example 2: Based on Example 1, specifically as follows... Figure 1 , Figure 2 and Figure 7 As shown, a swing motor 11 is fixedly installed on one outer wall of the processing box 10. A set of first connecting rods 13 are fixedly installed on both outer walls of the first fixed frame plate 12. The first connecting rods 13 are rotatably installed inside the processing box 10. A second connecting rod 14 is fixedly installed at one end of the set of first connecting rods 13. The output shaft of the second connecting rod 14 is fixedly connected to one end of the second connecting rod 14 through a connecting shaft. A filter material perforated plate 25 is fixedly installed inside the processing box 10. A hole is opened on one outer wall of the processing box 10, and a discharge pipe 31 is fixedly installed in the hole. When the swing motor 11 is started, it drives the second connecting rod 14 to rotate, which drives the first connecting rod 13 to rotate inside the processing box 10, causing the first fixed frame plate 12 to tilt, thus adjusting the tilt angle of the first fixed frame plate 12.

[0036] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, a first rotating rod 27 is rotatably mounted inside the processing box 10. A first servo motor 26 is fixedly mounted on one outer wall of the processing box 10. The output shaft of the first servo motor 26 is fixedly connected to one end of the first rotating rod 27 via a coupling. Four sets of stirring blades 28 are fixedly mounted on the outer wall of the first rotating rod 27. Five sets of third fixing plates 29 are fixedly mounted inside the processing box 10. Four sets of partitions 30 are fixedly mounted on the outer wall of the third fixing plates 29. Holes are opened inside the third fixing plates 29, and the first rotating rod 27 is set in the holes inside the third fixing plates 29. When the first servo motor 26 is started, it drives the first rotating rod 27 to rotate, which drives the stirring blades 28 to rotate and stir the waste at the bottom of the inner side of the processing box 10. The waste is output through the discharge pipe 31 and separated into compartments by the third fixing plates 29 and partitions 30.

[0037] Based on the above, the structure of the processing box 10, swing motor 11, first fixed frame plate 12, first connecting rod 13, second connecting rod 14, filter material perforated plate 25, first servo motor 26, first rotating rod 27, stirring blade 28, third fixed plate 29, partition plate 30 and discharge pipe 31 achieves the purpose of collecting and discharging waste, improves the cleaning efficiency of the device, facilitates rapid cleaning of waste, reduces the workload of workers, and improves the flexibility of the device.

[0038] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a fourth fixing plate 32 is fixedly installed on one outer wall of the processing box 10. A first electrical control box 33 is fixedly installed on one outer wall of the fourth fixing plate 32. An electric push rod 34 is installed inside the fourth fixing plate 32. The first electrical control box 33 is electrically connected to the electric push rod 34. A first moving block 35 is fixedly installed on the top of the electric push rod 34. A guide rod 36 is installed inside the fourth fixing plate 32. A hole is opened inside the first moving block 35, and the guide rod 36 is set in the hole inside the first moving block 35. When the first electrical control box 33 is started, the electric push rod 34 moves, pushing the first moving block 35 to move inside the fourth fixing plate 32. The guide rod 36 guides the first moving block 35.

[0039] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a support plate 37 is fixedly installed on the top of the first moving block 35. A limiting groove is opened inside the support plate 37. A second moving block 40 is set in the limiting groove. A threaded sleeve is rotatably installed inside the second moving block 40. An electric threaded rod 39 is rotatably installed inside the limiting groove. The electric threaded rod 39 is set inside the threaded sleeve.

[0040] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a second electrical control box 38 is fixedly installed on the top of the support plate 37, and the second electrical control box 38 is electrically connected to the electric threaded rod 39. A third electrical control box 41 is fixedly installed on the top of the second moving block 40, and a laser device 42 is fixedly installed on the bottom of the second moving block 40. The third electrical control box 41 is electrically connected to the laser device 42. A bellows 43 is fixedly installed on one outer wall of the support plate 37, and a guide pipe 44 is fixedly installed on one outer wall of the bellows 43. When the second electrical control box 38 is started, the electric threaded rod 39 is rotated, which in turn rotates the threaded sleeve inside the second moving block 40. This causes the threaded sleeve to rotate on the outer wall of the electric threaded rod 39, moving the second moving block 40 inside the support plate 37. The position of the second moving block 40 is adjusted, and the third electrical control box 41 is started to control the laser device 42 to start. The laser device 42 then performs laser treatment on the raw materials. The bellows 43 is started, and air is blown onto the raw materials through the guide pipe 44.

[0041] In summary, by processing the structure of the box 10, the fourth fixing plate 32, the first electrical control box 33, the electric push rod 34, the first moving block 35, the guide rod 36, the support plate 37, the second electrical control box 38, the electric threaded rod 39, the second moving block 40, the third electrical control box 41, the laser instrument 42, the air box 43, and the air duct 44, the laser module can be moved, thereby improving the processing efficiency of raw materials, increasing the raw material processing range of the device, improving the convenience of using the device, and optimizing the user experience.

[0042] Working principle: The equipment uses a limiting structure (including a first limiting part and a second limiting part) to limit and fix raw materials of different sizes. The first limiting part uses a damping spring rod 23 to drive the first clamping plate 22 to clamp the raw material. The second limiting part cooperates with the first fixed frame plate 12 through the first snap-fit ​​plate 19 and the first snap-fit ​​block 20, and the first fixing strip 17 supports the bottom of the raw material to ensure that the raw material is stably placed in the processing box. The swing motor 11 is started, which drives the second connecting rod 14 and the connected first connecting rod 13 to rotate inside the processing box 10, thereby adjusting the tilt angle of the first fixed frame plate 12 to adapt to different processing requirements. The first servo motor 26 is started, which drives the first rotating rod 27 and the stirring blade 28 to rotate, and stirs the waste at the bottom of the inner side of the processing box 10. Waste is discharged through the filter plate 25 and discharge pipe 31, and is simultaneously collected by the third fixed plate 29 and partition 30. The height and position of the support plate 37 are adjusted by the cooperation of the electric push rod 34 and guide rod 36. The second electric control box 38 is activated to control the rotation of the electric threaded rod 39, which in turn drives the second moving block 40 to move inside the support plate 37. The position of the laser instrument 42 is adjusted so that it is aligned with the raw material. The third electric control box 41 is activated to control the laser instrument 42 to start, and emit laser to perform impact strengthening treatment on the raw material. The air box 43 is activated to blow air onto the raw material through the air duct 44, which may be used for cooling, removing debris, or assisting laser treatment.

[0043] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A laser shock peening device, characterized in that, include: Processing box (10), the processing box (10) is placed on the ground; The limiting structure includes a first limiting part and a second limiting part. The first limiting part includes a second fixed frame plate (18) disposed inside the processing box (10). Four sets of second fixed plates (21) are fixedly installed inside the second fixed frame plate (18). Nine sets of first clamping plates (22) are disposed between the four sets of second fixed plates (21). Two sets of damping spring rods (23) are disposed between every two sets of first clamping plates (22), for a total of twenty sets of damping spring rods (23). The second limiting part includes a first fixed frame plate (12) disposed inside the processing box (10). Two sets of first fixed plates (15) are fixedly installed inside the first fixed frame plate (12). A first snap-fit ​​groove (16) is opened inside the first fixed plate (15). Twelve sets of first fixing strips (17) are fixedly installed inside the first fixed frame plate (12).

2. The laser shock peening device according to claim 1, characterized in that, The second limiting part also includes a first snap-fit ​​plate (19) fixedly installed at the bottom of the second fixed frame plate (18). Four sets of first snap-fit ​​blocks (20) are fixedly installed at the bottom of the first snap-fit ​​plate (19). The first snap-fit ​​blocks (20) are snap-fitted into the inside of the first snap-fit ​​groove (16). The first snap-fit ​​plate (19) is snap-fitted into the inside of the first fixed frame plate (12). Two sets of handles (24) are fixedly installed at the top of the second fixed frame plate (18).

3. The laser shock peening device according to claim 1, characterized in that, A swing motor (11) is fixedly installed on one side of the outer wall of the processing box (10). A set of first connecting rods (13) are fixedly installed on both sides of the outer wall of the first fixed frame plate (12). The first connecting rods (13) are rotatably installed inside the processing box (10). A second connecting rod (14) is fixedly installed at one end of the set of first connecting rods (13). The output shaft of the second connecting rod (14) is fixedly connected to one end of the second connecting rod (14) through a connecting shaft. A filter material perforated plate (25) is fixedly installed inside the processing box (10). A hole is opened on one side of the outer wall of the processing box (10), and a discharge pipe (31) is fixedly installed in the hole.

4. The laser shock peening device according to claim 1, characterized in that, The processing box (10) is rotatably mounted with a first rotating rod (27). A first servo motor (26) is fixedly mounted on one side of the outer wall of the processing box (10). The output shaft of the first servo motor (26) is fixedly connected to one end of the first rotating rod (27) through a coupling. Four sets of stirring blades (28) are fixedly mounted on the outer wall of the first rotating rod (27). Five sets of third fixing plates (29) are fixedly mounted inside the processing box (10). Four sets of partitions (30) are fixedly mounted on the outer wall of the third fixing plates (29). Holes are opened inside the third fixing plates (29). The first rotating rod (27) is set in the hole inside the third fixing plate (29).

5. The laser shock peening device according to claim 1, characterized in that, A fourth fixing plate (32) is fixedly installed on one side of the outer wall of the processing box (10). A first electrical control box (33) is fixedly installed on one side of the outer wall of the fourth fixing plate (32). An electric push rod (34) is provided inside the fourth fixing plate (32). The first electrical control box (33) is electrically connected to the electric push rod (34). A first moving block (35) is fixedly installed on the top of the electric push rod (34). A guide rod (36) is provided inside the fourth fixing plate (32). A hole is opened inside the first moving block (35). The guide rod (36) is located in the hole inside the first moving block (35).

6. The laser shock peening device according to claim 5, characterized in that, A support plate (37) is fixedly installed on the top of the first movable block (35). A limit groove is opened inside the support plate (37). A second movable block (40) is provided in the limit groove. A threaded sleeve is rotatably installed inside the second movable block (40). An electric threaded rod (39) is rotatably installed inside the limit groove. The electric threaded rod (39) is located inside the threaded sleeve.

7. The laser shock peening device according to claim 6, characterized in that, A second electrical control box (38) is fixedly installed on the top of the support plate (37), and the second electrical control box (38) is electrically connected to the electric threaded rod (39). A third electrical control box (41) is fixedly installed on the top of the second moving block (40), and a laser device (42) is fixedly installed on the bottom of the second moving block (40). The third electrical control box (41) is electrically connected to the laser device (42). A bellows (43) is fixedly installed on one side of the outer wall of the support plate (37), and a duct (44) is fixedly installed on one side of the outer wall of the bellows (43).