A laser-ultrasonic residual stress detection device

Abstract

The utility model discloses a kind of laser ultrasonic residual stress detection devices, belong to residual stress detection device technical field.It include frame and first mobile support, the top of the frame is equipped with first mobile support, the top of the first mobile support outer frame is symmetrically equipped with first guide rail, the top of the first guide rail outer frame is equipped with first support frame, the side of the top of the frame away from first support frame is equipped with second support frame, the outside of the second support frame is provided with support plate.The utility model not only realizes residual stress detection device convenient adjustment interval to place workpiece, facilitate to the workpiece of different width to be conveyed detection, and facilitate the detection of the different position of workpiece in convenient mobile position, increase detection range, improve the efficiency of residual stress detection device detection.

Description

Technical Field

[0001] This utility model relates to the technical field of residual stress detection devices, specifically a laser ultrasonic residual stress detection device. Background Technology

[0002] The laser ultrasonic residual stress detection device is a non-contact, high-precision device that uses laser to excite and receive ultrasonic waves to measure the residual stress inside a material. Its core technology combines laser ultrasonic technology and stress-acoustic elasticity effect, and is suitable for material performance evaluation in aerospace, nuclear power, rail transportation and other fields. Laser ultrasonic technology uses pulsed laser to irradiate the surface of a solid material. Due to the local high temperature generated on the irradiated area, a thermoelastic and ablation mechanism is formed, which in turn excites ultrasonic waves.

[0003] As disclosed in the patent announcement number CN222951879U, a laser ultrasonic residual stress detection device includes a machine base, a laser emitting mechanism disposed on the machine base to emit an excitation laser to the surface of a component, and a receiving mechanism for receiving ultrasonic signals. The machine base is equipped with an industrial control computer, and the receiving mechanism includes an plexiglass wedge attached to the surface of the component and an ultrasonic receiving transducer disposed on the plexiglass wedge. The ultrasonic receiving transducer is electrically connected to the industrial control computer.

[0004] Although it achieves the emission of an excitation laser from a laser emitting mechanism onto the surface of a component, thereby exciting ultrasonic waves on the surface of the component, an organic glass wedge and an ultrasonic receiving transducer are placed on both sides of the excitation laser. The use of the ultrasonic receiving transducer can improve the intensity of the acquired ultrasonic signal. For some materials with low ultrasonic excitation efficiency and weak ultrasonic signals, it can effectively improve the accuracy of residual stress detection. A laser modulator is added to modulate the excitation laser emitted by the laser emitting device into a narrow-band laser ultrasonic wave of the required detection frequency. Laser ultrasonic waves of different frequencies can detect residual stress values ​​at different depths of the component.

[0005] However, this does not solve the problem that existing residual stress detection devices of this type are generally not conducive to conveniently adjusting the spacing for placing workpieces, are not convenient for conveying and detecting workpieces of different widths, and are not convenient for moving the position to detect different positions of the workpiece, thus affecting the detection range and efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a laser ultrasonic residual stress detection device to solve the problems mentioned in the background art, such as the inconvenience of adjusting the spacing for placing workpieces, the inconvenience of transporting and detecting workpieces of different widths, and the inconvenience of moving the device to detect different positions of the workpiece, which affect the detection range and efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A laser ultrasonic residual stress detection device includes a frame and a first movable support. The first movable support is mounted on the top of the frame. A first guide rail is symmetrically mounted on the top of the frame outside the first movable support. A first support frame is mounted on the top of the frame outside the first guide rail. A second support frame is mounted on the side of the top of the frame away from the first support frame. A support plate is provided on the outside of the second support frame. Two sets of support frames are provided on the outside of the first guide rail. A first slider is symmetrically slidably mounted on the surface of the first guide rail. Each support frame is connected to the first slider. An upper limit groove is installed on the top of each support frame. A lower limit groove is installed on the bottom of each support frame. Rotating shafts are movably mounted on both sides of each support frame. A sprocket is fitted on the surface of each rotating shaft. A chain is fitted between each set of sprockets. The chain meshes with the sprocket. A grooved support block is installed on the surface of each chain. The grooved support block is slidably connected to the upper limit groove and the lower limit groove.

[0008] Optionally, a second servo motor is installed on the side wall of the support frame. The output end of the second servo motor is connected to a set of rotating shafts. Support columns are symmetrically and movably installed on the side of the support frame near the second servo motor, and rollers are movably installed between the two sets of support columns.

[0009] Optionally, the grooved support blocks are all slidably connected to the rollers, and a fourth servo motor is symmetrically installed on the top side wall of the frame. The output end of the fourth servo motor is equipped with a bidirectional threaded rod. The bidirectional threaded rod extends through the two sets of support frames to their outside. A fourth threaded block is symmetrically fitted on the surface of the bidirectional threaded rod. The bidirectional threaded rod is threadedly connected to the fourth threaded block. The fourth threaded block is connected to the support frame.

[0010] Optionally, a first servo motor is installed on the side wall of the first movable bracket, and a first threaded rod is installed at the output end of the first servo motor. The first threaded rod extends into the interior of the first movable bracket and is movably connected thereto. A first threaded block is fitted on the surface of the first threaded rod, and the first threaded rod is threadedly connected to the first threaded block.

[0011] Optionally, an ultrasonic receiving transducer is installed at the top of the first threaded block, a third servo motor is installed on the side wall of the first support frame, and a second threaded rod is installed at the output end of the third servo motor, the second threaded rod extending into the interior of the first support frame and movably connected thereto.

[0012] Optionally, a second threaded block is fitted onto the surface of the second threaded rod, the second threaded rod is threadedly connected to the second threaded block, and the top end of the second threaded block is connected to the support plate.

[0013] Optionally, a second guide rail is installed at the top of the second support frame, and a second slider is installed on the bottom of the support plate away from the first support frame, and the second slider is slidably connected to the second guide rail.

[0014] Optionally, a second movable bracket is mounted on the top of the support plate, and a stepper motor is mounted on the top of the second movable bracket.

[0015] Optionally, a third threaded rod is installed at the output end of the stepper motor, and a third threaded block is fitted on the surface of the third threaded rod, with the third threaded block being threadedly connected to the third threaded rod.

[0016] Optionally, a hollow cylinder is installed at the bottom end of the third threaded block, the hollow cylinder is slidably connected to the second movable support, a laser emitter is installed at the bottom end of the hollow cylinder, and the first servo motor and the third servo motor rotate synchronously.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the residual stress detection device not only realizes the convenient adjustment of the spacing for placing workpieces, facilitating the conveying and detection of workpieces of different widths, but also facilitates convenient movement of the position to detect different positions of the workpiece, increasing the detection range and improving the detection efficiency of the residual stress detection device.

[0018] When using the laser ultrasonic residual stress detection device, the second servo motor drives a set of rotating shafts to rotate, which in turn drives a set of sprockets to rotate. With the cooperation of another set of sprockets, the sprockets drive the chain to rotate, and the chain drives the grooved support block to rotate. The workpiece to be tested is placed sequentially on the surface of the grooved support block and transported to the detection area for testing. The fourth servo motor drives the bidirectional threaded rod to rotate, which in turn drives two sets of fourth threaded blocks to move towards each other. The fourth threaded blocks drive the support frame and the first slider to slide towards each other on the surface of the first guide rail, allowing the workpiece to be placed by adjusting the spacing between the two sets of support frames. This enables the residual stress detection device to conveniently adjust the spacing for workpiece placement, facilitating the transport and testing of workpieces of different widths and improving the convenience of adjusting the spacing for workpiece placement in the residual stress detection device.

[0019] The third servo motor drives the second threaded rod to rotate, which in turn moves the second threaded block. The second threaded block then moves the support plate, the second moving bracket, and the laser emitter. The first servo motor drives the first threaded rod to rotate, which in turn moves the first threaded block. The first threaded block then moves the ultrasonic transducer, ensuring that the ultrasonic transducer always receives the ultrasonic signal emitted by the laser emitter. The stepper motor drives the third threaded rod to rotate, which in turn moves the third threaded block downwards. With the hollow cylinder and the second moving bracket sliding together, the third threaded block moves the hollow cylinder and the laser emitter downwards, allowing the laser emitter to reach the detection height. This enables the residual stress detection device to be easily moved to different positions on the workpiece for detection, increasing the detection range and improving the efficiency of the residual stress detection device. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a three-dimensional structural diagram of the first guide rail of this utility model; Figure 4 This is a three-dimensional structural diagram of the support column of this utility model; Figure 5 This is a three-dimensional structural diagram of the frame of this utility model; Figure 6 This is a three-dimensional structural diagram of the support plate of this utility model; Figure 7 This is a schematic diagram of the three-dimensional structure of the hollow cylinder of this utility model.

[0022] Figure label: 1. Frame; 2. First movable bracket; 3. First support frame; 4. Second support frame; 5. First guide rail; 6. Support plate; 7. First servo motor; 8. First threaded rod; 9. First threaded block; 10. Ultrasonic receiving transducer; 11. First slider; 12. Support frame; 13. Upper limit slide groove; 14. Lower limit slide groove; 15. Support column; 16. Roller; 17. Second servo motor; 18. Rotating shaft; 19. Sprocket; 20. Groove support block; 21. Chain; 22. Third servo motor; 23. Second threaded rod; 24. Second threaded block; 25. Second movable bracket; 26. Second slider; 27. Second guide rail; 28. Stepper motor; 29. ​​Third threaded rod; 30. Third threaded block; 31. Hollow cylinder; 32. Laser emitter; 33. Fourth servo motor; 34. Fourth threaded block; 35. Bidirectional threaded rod.

[0023] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0024] The laser ultrasonic residual stress detection device provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0025] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0026] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0027] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0028] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0029] like Figures 1 to 7As shown, an embodiment of this utility model provides a laser ultrasonic residual stress detection device, including a frame 1 and a first movable support 2. The first movable support 2 is installed at the top of the frame 1. A first guide rail 5 is symmetrically installed on the top of the frame 1 outside the first movable support 2. A first support frame 3 is installed on the top of the frame 1 outside the first guide rail 5. A second support frame 4 is installed on the side of the top of the frame 1 away from the first support frame 3. A support plate 6 is provided on the outside of the second support frame 4. Two sets of support frames 12 are provided on the outside of the first guide rail 5. A first slider 11 is symmetrically slidably installed on the surface of the first guide rail 5. The support frames 12 are all connected to the first slider 11. An upper limit groove 13 is installed at the top of each support frame 12. A lower limit groove 14 is installed at the bottom of each support frame 12. Rotating shafts 18 are movably installed on both sides of the support frame 12. A sprocket 19 is fitted on the surface of each rotating shaft 18. A chain 21 is fitted between the two sets of sprockets 19. Chain 21 meshes with sprocket 19. Grooved support blocks 20 are installed on the surface of chain 21. Grooved support blocks 20 are slidably connected to upper limit slide groove 13 and lower limit slide groove 14. Second servo motors 17 are installed on the side walls of support frame 12. The output ends of the second servo motors 17 are connected to a set of rotating shafts 18. Support columns 15 are symmetrically and movably installed on the side of support frame 12 near the second servo motors 17. Rollers 16 are movably installed between the two sets of support columns 15. Grooved support blocks 20 are slidably connected to rollers 16. Fourth servo motors 33 are symmetrically installed on the top side wall of frame 1. Bidirectional threaded rods 35 are installed on the output ends of the fourth servo motors 33. Bidirectional threaded rods 35 extend through the two sets of support frames 12 to their outside. Fourth threaded blocks 34 are symmetrically fitted on the surface of the bidirectional threaded rods 35. Bidirectional threaded rods 35 are threadedly connected to the fourth threaded blocks 34. The fourth threaded blocks 34 are connected to the support frame 12.

[0030] When using the laser ultrasonic residual stress detection device, two sets of second servo motors 17 are turned on. Supported by the support frame 12, the second servo motors 17 drive a set of rotating shafts 18 to rotate. The rotating shafts 18 drive a set of sprockets 19 to rotate. With the cooperation of another set of sprockets 19, and the meshing of the sprockets 19 and chain 21, the sprockets 19 drive the chain 21 to rotate. Under the sliding support of the upper limit groove 13, lower limit groove 14, and groove support block 20, the chain 21 drives the groove support block 20 to rotate. The workpiece to be tested is placed sequentially on the surface of the groove support block 20 and transported to the detection area for testing. The rollers 16 provide stable transport for the groove support block 20. When it is necessary to... When inspecting workpieces of the same width, two sets of fourth servo motors 33 are turned on. Supported by the frame 1, the fourth servo motors 33 drive the bidirectional threaded rod 35 to rotate. The bidirectional threaded rod 35 drives two sets of fourth threaded blocks 34 to move towards each other. With the sliding connection between the first slider 11 and the first guide rail 5, the fourth threaded blocks 34 drive the support frame 12 and the first slider 11 to slide towards each other on the surface of the first guide rail 5. This allows the workpiece to be placed by adjusting the distance between the two sets of support frames 12. This enables the residual stress detection device to conveniently adjust the distance for placing the workpiece, which facilitates the conveying and inspection of workpieces of different widths and improves the convenience of adjusting the distance for placing the workpiece.

[0031] A first servo motor 7 is installed on the side wall of the first movable support 2. A first threaded rod 8 is installed at the output end of the first servo motor 7. The first threaded rod 8 extends into the interior of the first movable support 2 and is movably connected thereto. A first threaded block 9 is fitted on the surface of the first threaded rod 8. The first threaded rod 8 and the first threaded block 9 are threadedly connected.

[0032] An ultrasonic receiving transducer 10 is installed at the top of the first threaded block 9. A third servo motor 22 is installed on the side wall of the first support frame 3. A second threaded rod 23 is installed at the output end of the third servo motor 22. The second threaded rod 23 extends into the interior of the first support frame 3 and is movably connected thereto.

[0033] The surface of the second threaded rod 23 is fitted with a second threaded block 24, and the second threaded rod 23 is threadedly connected to the second threaded block 24. The top of the second threaded block 24 is connected to the support plate 6.

[0034] The top of the second support frame 4 is equipped with a second guide rail 27, and the bottom of the support plate 6 is equipped with a second slider 26 on the side away from the first support frame 3. The second slider 26 is slidably connected to the second guide rail 27.

[0035] A second movable bracket 25 is installed at the top of the support plate 6, and a stepper motor 28 is installed at the top of the second movable bracket 25.

[0036] The output end of the stepper motor 28 is equipped with a third threaded rod 29, and a third threaded block 30 is fitted on the surface of the third threaded rod 29. The third threaded block 30 is threadedly connected to the third threaded rod 29.

[0037] A hollow cylinder 31 is installed at the bottom of the third threaded block 30. The hollow cylinder 31 is slidably connected to the second movable bracket 25. A laser emitter 32 is installed at the bottom of the hollow cylinder 31. The first servo motor 7 and the third servo motor 22 rotate synchronously.

[0038] When it is necessary to inspect different positions of the workpiece, the third servo motor 22 is turned on. Supported by the first support frame 3, the third servo motor 22 drives the second threaded rod 23 to rotate. With the threaded connection between the second threaded rod 23 and the second threaded block 24, the second threaded rod 23 drives the second threaded block 24 to move. With the sliding connection between the second slider 26 and the second guide rail 27, the second threaded block 24 drives the support plate 6, the second moving bracket 25, and the laser emitter 32 to move. At the same time, the first servo motor 7 is turned on. Supported by the first moving bracket 2, the first servo motor 7 drives the first threaded rod 8 to rotate. With the threaded connection between the first threaded rod 8 and the first threaded block 9, the first threaded rod 8 drives the first threaded block 9 to move. The first threaded block 9 drives the ultrasonic receiving transducer 10 to move, so that the ultrasonic receiving transducer 10 can always receive the ultrasonic signal emitted by the laser emitter 32. The stepper motor 28 is turned on. With the support of the second moving bracket 25, the stepper motor 28 drives the third threaded rod 29 to rotate. With the threaded connection between the threaded rod 29 and the third threaded block 30, the third threaded rod 29 drives the third threaded block 30 to move downwards. With the sliding connection between the hollow cylinder 31 and the second moving bracket 25, the third threaded block 30 drives the hollow cylinder 31 and the laser emitter 32 to move downwards, so that the laser emitter 32 moves to the detection height. The laser emitter 32 uses a short pulse (nanosecond level) laser focused on the surface of the workpiece, and excites broadband ultrasonic waves (longitudinal waves, transverse waves, surface waves) through thermoelastic effect or ablation effect. The ultrasonic receiving transducer 10 receives the ultrasonic signal. The propagation speed of ultrasonic waves in the material (especially transverse waves and surface waves) is highly sensitive to the stress state inside the material. This is called the acoustoelastic effect. By measuring the time or speed change of ultrasonic waves in the stress area, the magnitude and direction of residual stress can be deduced. The equipment uses a laser ultrasonic residual stress detector produced by Wuhan Zhongke, which realizes the convenient movement of the residual stress detection device to detect different positions of the workpiece, increases the detection range, and improves the detection efficiency of the residual stress detection device.

[0039] The working principle of the technical solution provided by this utility model is as follows: The second servo motor 17 drives a set of rotating shafts 18 to rotate, the rotating shafts 18 drive a set of sprockets 19 to rotate, and with the cooperation of another set of sprockets 19, the sprockets 19 drive the chain 21 to rotate, the chain 21 drives the groove support block 20 to rotate, and the workpiece to be tested is placed on the surface of the groove support block 20 in sequence and transported to the detection area for detection. The roller 16 plays a stable transport role for the groove support block 20. The fourth servo motor 33 drives the bidirectional threaded rod 35 to rotate, the bidirectional threaded rod 35 drives two sets of fourth threaded blocks 34 to move towards each other, and the fourth threaded blocks 34 drive the support frame 12 and the first slider 11 to slide towards each other on the surface of the first guide rail 5, so as to adjust the distance between the two sets of support frames 12 to place the workpiece. The third servo motor... The machine 22 drives the second threaded rod 23 to rotate, the second threaded rod 23 drives the second threaded block 24 to move, the second threaded block 24 drives the support plate 6, the second moving bracket 25, and the laser emitter 32 to move. The first servo motor 7 drives the first threaded rod 8 to rotate, so that the first threaded rod 8 drives the first threaded block 9 to move. The first threaded block 9 drives the ultrasonic receiving transducer 10 to move, so that the ultrasonic receiving transducer 10 can always receive the ultrasonic signal emitted by the laser emitter 32. The stepper motor 28 drives the third threaded rod 29 to rotate, the third threaded rod 29 drives the third threaded block 30 to move downward, the third threaded block 30 drives the hollow cylinder 31 and the laser emitter 32 to move downward, so that the laser emitter 32 moves to the detection height, thus completing the operation of the residual stress detection device.

[0040] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0041] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A laser ultrasonic residual stress detection device, characterized in that: The system includes a frame and a first movable support. The first movable support is mounted on the top of the frame. A first guide rail is symmetrically mounted on the top of the frame outside the first movable support. A first support frame is mounted on the top of the frame outside the first guide rail. A second support frame is mounted on the side of the top of the frame away from the first support frame. A support plate is provided on the outside of the second support frame. Two sets of support frames are provided on the outside of the first guide rail. A first slider is symmetrically slidably mounted on the surface of the first guide rail. Each support frame is connected to the first slider. An upper limit groove is mounted on the top of each support frame. A lower limit groove is mounted on the bottom of each support frame. Rotating shafts are movably mounted on both sides of each support frame. A sprocket is fitted on the surface of each rotating shaft. A chain is fitted between each set of sprockets. The chain meshes with the sprocket. A grooved support block is mounted on the surface of each chain. The grooved support block is slidably connected to the upper limit groove and the lower limit groove.

2. The laser ultrasonic residual stress detection device according to claim 1, characterized in that: Each of the support frames is equipped with a second servo motor, the output end of which is connected to a set of rotating shafts. Support columns are symmetrically and movably installed on the side of the support frame closest to the second servo motors, and rollers are movably installed between the two sets of support columns.

3. The laser ultrasonic residual stress detection device according to claim 2, characterized in that: The grooved support blocks are all slidably connected to the rollers. A fourth servo motor is symmetrically installed on the top side wall of the frame. The output end of the fourth servo motor is equipped with a bidirectional threaded rod. The bidirectional threaded rod extends through the two sets of support frames to their outside. A fourth threaded block is symmetrically fitted on the surface of the bidirectional threaded rod. The bidirectional threaded rod is threadedly connected to the fourth threaded block. The fourth threaded block is connected to the support frame.

4. The laser ultrasonic residual stress detection device according to claim 3, characterized in that: A first servo motor is installed on the side wall of the first movable bracket. A first threaded rod is installed at the output end of the first servo motor. The first threaded rod extends into the interior of the first movable bracket and is movably connected thereto. A first threaded block is fitted on the surface of the first threaded rod, and the first threaded rod is threadedly connected to the first threaded block.

5. The laser ultrasonic residual stress detection device according to claim 4, characterized in that: An ultrasonic receiving transducer is installed at the top of the first threaded block, a third servo motor is installed on the side wall of the first support frame, and a second threaded rod is installed at the output end of the third servo motor. The second threaded rod extends into the interior of the first support frame and is movably connected thereto.

6. The laser ultrasonic residual stress detection device according to claim 5, characterized in that: The surface of the second threaded rod is fitted with a second threaded block, the second threaded rod is threadedly connected to the second threaded block, and the top of the second threaded block is connected to the support plate.

7. The laser ultrasonic residual stress detection device according to claim 6, characterized in that: The top of the second support frame is equipped with a second guide rail, and the bottom of the support plate is equipped with a second slider on the side away from the first support frame. The second slider is slidably connected to the second guide rail.

8. The laser ultrasonic residual stress detection device according to claim 7, characterized in that: A second movable bracket is mounted on the top of the support plate, and a stepper motor is mounted on the top of the second movable bracket.

9. The laser ultrasonic residual stress detection device according to claim 8, characterized in that: The output end of the stepper motor is equipped with a third threaded rod, and a third threaded block is fitted on the surface of the third threaded rod. The third threaded block is threadedly connected to the third threaded rod.

10. The laser ultrasonic residual stress detection device according to claim 9, characterized in that: A hollow cylinder is installed at the bottom end of the third threaded block. The hollow cylinder is slidably connected to the second movable support. A laser emitter is installed at the bottom end of the hollow cylinder. The first servo motor and the third servo motor rotate synchronously.

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