In-situ laser shock strengthening manufacturing device and method
By using an in-situ laser shock peening manufacturing device, and by employing a synchronization mechanism and a water flow control mechanism, the problems of traditional equipment being unable to adapt to workpiece surface unevenness and inconsistent laser intensity are solved, thus achieving uniform laser shock peening of all parts of the workpiece.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-29
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional laser shock peening equipment is difficult to adapt to the unevenness of the workpiece surface and it is difficult to maintain a consistent laser shock intensity. The thickness of the water film has a direct impact on the laser energy transfer and the shock effect.
An in-situ laser shock peening manufacturing device is used. Through a synchronization mechanism and a water flow control mechanism, the distance between the laser generator and the workpiece and the water film thickness are automatically adjusted to ensure the consistency of laser intensity and water film thickness in all parts of the workpiece.
This method achieves uniform laser shock strengthening of uneven workpieces, ensuring consistent laser intensity and water film thickness across all parts, thus improving the effectiveness of laser shock strengthening.
Smart Images
Figure CN121700162A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of metal additive manufacturing, in particular to a laser shock peening manufacturing device and method. BACKGROUND
[0002] Laser shock peening technology is a new and effective surface modification technology, which uses a short pulse, high power density laser beam to irradiate the metal surface, so that the energy absorption layer explodes and vaporizes to form a high temperature and high pressure plasma, and under the restriction of the constraint layer, a GPa level transient high pressure plasma shock wave is generated, when the peak stress of the shock wave exceeds the yield limit of the material, the surface layer of the material plastically deforms, forming a residual compressive stress layer and a nano-sized grain refinement structure, thereby significantly improving the wear resistance, stress corrosion resistance and fatigue resistance of the metal material.
[0003] However, the traditional laser shock peening equipment has some limitations in actual application, and it is difficult to adapt to the unevenness of the workpiece surface, and it is difficult to maintain a constant laser shock intensity during the strengthening process of uneven workpieces.
[0004] With the continuous improvement of the requirements of the manufacturing industry for high precision and high performance, it is particularly important to develop a device that can automatically adapt to the shape change of the workpiece surface and maintain the consistency of the laser shock intensity, in addition, during the laser shock peening process, the thickness of the water film has a direct impact on the transmission of laser energy and the impact effect, therefore, automatic control of the thickness of the water film is also the key to improving the strengthening effect.
[0005] Therefore, based on the above problems, we have invented a laser shock peening manufacturing device and method. SUMMARY
[0006] In view of the deficiencies of the prior art, the present application provides a laser shock peening manufacturing device and method to solve the problems raised in the background art.
[0007] To achieve the above purpose, the present application provides the following technical scheme: a laser shock peening manufacturing device, comprising a back-shaped positioning plate, a positioning block is arranged in the back-shaped positioning plate, a positioning assembly is arranged in the back-shaped positioning plate for positioning the positioning block, a horizontal plate is arranged below the positioning block, the positioning block and the horizontal plate are fixedly connected through vertical plates, a laser generator is slidingly installed between the two vertical plates, a laser head on the laser generator slidingly penetrates the horizontal plate, a back-shaped water control plate is arranged below the horizontal plate, the laser generator and the back-shaped water control plate are synchronously adjusted through a synchronous mechanism, and a water flow control mechanism is arranged in the back-shaped water control plate.
[0008] Further, the positioning assembly comprises four strip-shaped holes arranged on the back-shaped positioning plate, positioning sliding blocks are slidingly arranged in the strip-shaped holes, positioning sliding rods are fixedly connected between the two opposite positioning sliding blocks, the positioning sliding rods slidingly penetrate the positioning blocks, positioning screws are rotatably arranged in the strip-shaped holes, the positioning screws are threadedly arranged through the positioning sliding blocks, the two corresponding positioning screws rotatably penetrate the back-shaped positioning plate and are drivingly connected through the synchronous transmission assembly, a positioning motor is arranged outside the back-shaped positioning plate, and a driving shaft of the positioning motor rotatably penetrates the back-shaped positioning plate and is coaxially arranged with the positioning sliding block.
[0009] Further, the synchronous transmission assembly comprises two synchronous pulleys, the two synchronous pulleys are coaxially arranged with the two positioning screws respectively, and the two synchronous pulleys are drivingly connected through a synchronous belt.
[0010] Further, the synchronous mechanism comprises a buffer hole arranged on the horizontal plate, a buffer plate is slidingly arranged in the buffer hole, a fixing block is arranged outside the buffer plate, the fixing block is connected with the horizontal plate through a buffer spring, a connecting plate is arranged below the buffer plate, the connecting plate is fixedly connected with the back-shaped water control plate, the buffer plate is provided with a fine adjustment assembly for fine adjustment of the connecting plate, the horizontal plate is provided with two L-shaped grooves at the lower end, a synchronous screw is rotatably arranged in each L-shaped groove, a synchronous shaft is rotatably arranged between the two L-shaped grooves, a first pulley is coaxially arranged on the synchronous shaft, a second pulley is coaxially arranged on the synchronous screw, the first pulley and the second pulley are drivingly connected through a synchronous belt, one end of the synchronous shaft rotatably penetrates the horizontal plate and extends into the buffer hole, a synchronous gear is coaxially arranged outside the synchronous shaft, a tooth groove is arranged on the buffer plate and engaged with the synchronous gear, a threaded block is threadedly arranged outside the synchronous screw, a deflection plate is rotatably arranged on the threaded block, the same fixing ring is rotatably connected to the ends of the two deflection plates away from the threaded block, the fixing ring is fixedly arranged outside the laser head of the laser generator, a steering ring is rotatably arranged at the lower end of the fixing ring, an optical camera and an infrared temperature measuring instrument are arranged at the lower end of the steering ring, a steering motor is arranged at the upper end of the fixing ring, a driving shaft of the steering motor rotatably penetrates the fixing ring and is coaxially arranged with a steering gear, and an annular tooth groove is arranged on the inner wall of the steering ring and engaged with the steering gear.
[0011] Further, the fine adjustment assembly comprises a fine adjustment groove arranged at the lower end of the buffer plate, a fine adjustment screw is rotatably arranged in the fine adjustment groove, a fine adjustment plate is threadedly arranged at the lower end of the fine adjustment screw, the fine adjustment plate is slidingly arranged with the inner wall of the fine adjustment groove, the lower end of the fine adjustment plate is fixedly connected with the connecting plate, the upper ends of the two fine adjustment screws rotatably penetrate the buffer plate and are drivingly connected through the fine adjustment transmission assembly, a fine adjustment motor is arranged on the buffer plate, and a driving shaft of the fine adjustment motor is coaxially arranged with the fine adjustment screw.
[0012] Furthermore, the fine-tuning transmission assembly includes two fine-tuning pulleys, which are coaxially mounted with two fine-tuning screws respectively, and the two fine-tuning pulleys are connected by a synchronous belt drive.
[0013] Furthermore, the water flow control mechanism includes two sloping grooves set on the inner wall of the U-shaped water control plate. A water supply pipe is installed on the sloping groove on the left side, and a water outlet pipe is installed on the right side of the U-shaped water control plate. The water outlet pipe is connected to the sloping groove. Two water tanks are installed on the horizontal plate. The same switching valve is installed at the end of the outlet of the two water tanks away from the water tank. The water outlet of the switching valve is connected to the water supply pipe. A float ball is provided in the sloping groove. An L-shaped slide rod is fixedly connected to the upper end of the float ball. The L-shaped slide rod slides through the U-shaped water control plate. A water level gauge is installed at the upper end of the U-shaped water control plate. A residual gear is rotatably installed on the water level gauge. The L-shaped slide rod has a toothed groove that meshes with the residual gear. The water level gauge has a fan-shaped groove. A pointer is provided in the fan-shaped groove. The pointer is fixedly connected to the smooth part of the residual gear. Scales are engraved on the edge of the fan-shaped groove. A top ring is fitted over the L-shaped slide rod. The top ring is fixedly connected to the sloping groove.
[0014] An in-situ laser shock peening manufacturing method, the specific steps of which are as follows: S1: Move the laser head of the laser generator to a suitable position above the workpiece to be strengthened, and adjust the spiral water control plate to make the spiral water control plate contact the surface of the workpiece. S2: Open the switching valve and supply water to the water supply pipe at a suitable flow rate through one of the water tanks. The water supply pipe flows through the inclined groove and is discharged through the outlet pipe. At this time, a water film is formed on the surface of the workpiece located in the return-shaped water control plate. The water flow control mechanism rises under the action of water buoyancy, so that the float ball abuts against the top ring. The float ball abuts against the contact sensor on the top ring. At this time, the water film thickness is appropriate, maintaining the current water flow speed. S3: The laser generator is driven by the positioning component to move forward and laser-impact the workpiece. The laser generator intensifies the impact on the workpiece. An optical camera observes the part of the workpiece that has not yet been impacted but is about to be impacted. An infrared thermometer detects the water temperature after the impact on the workpiece. When the laser is about to reach the protruding part of the workpiece, the laser power is slightly reduced. When the laser is about to reach the concave part of the workpiece, the laser power is slightly increased. When the water temperature after the impact on the workpiece is detected to be higher than the predetermined temperature, it indicates that the laser impact power is too high, so the laser power is slightly reduced. When the water temperature after the impact on the workpiece is detected to be lower than the predetermined temperature, it indicates that the laser impact power is too low, so the laser power is slightly increased. S4: When the laser reaches the raised part of the workpiece, the spiral water control plate rises, and the laser head of the laser generator rises synchronously according to the spiral water control plate. Water leaks from the bottom of the spiral water control plate, the float ball descends, the contact sensor separates, the flow rate of the water tank increases, and the water film thickness inside the spiral water control plate is maintained. When the laser reaches the recessed part of the workpiece, the spiral water control plate descends, and the laser head of the laser generator descends synchronously according to the spiral water control plate. Water leaks from the bottom of the spiral water control plate, the float ball descends, the contact sensor separates, the flow rate of the water tank increases, and the water film thickness inside the spiral water control plate is maintained.
[0015] Furthermore, in S3, when the positioning component drives the laser generator to move, it drives the steering ring to rotate via the steering motor, keeping the infrared thermometer behind the laser generator.
[0016] Compared with the prior art, the present invention provides an in-situ laser shock peening manufacturing apparatus and method, which has the following beneficial effects: 1. By setting a synchronization mechanism, when laser impacting uneven workpieces, the distance of the laser generator can be automatically adjusted according to the shape of the workpiece, so that the distance of the laser generator and the distance of the workpiece are always the same, maintaining the intensity of the laser on the workpiece and ensuring that the laser strengthens all parts of the workpiece equally.
[0017] 2. By setting up a water flow control mechanism, the water flow can be automatically adjusted when changes occur on the workpiece surface, so that the water film thickness on the workpiece surface is the same, and the water film has the same transmission and impact effect on the laser energy in all parts of the workpiece, thereby uniformly impacting and strengthening all parts of the workpiece.
[0018] This application can ensure that the impact strength of each part of an uneven workpiece is the same, and can maintain the same water film thickness in each part of the workpiece during the laser impact process, thus ensuring the same impact strengthening strength in each part of the workpiece. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a perspective view of the synchronization mechanism in this invention; Figure 4 This is a bottom view of the synchronization mechanism in this invention. Figure 5 This is a perspective view of the structure of the fine-tuning component in this invention; Figure 6 This is a perspective view of the structure of the fixed ring and the steering ring in this invention; Figure 7 This is a perspective view of the structure of the loop-shaped water control plate in this invention; Figure 8 This is a partial structural schematic diagram of the water flow control mechanism in this invention; Figure 9 This is a structural block diagram of the laser power controlled by the workpiece flatness in this invention; Figure 10 This is a block diagram illustrating the structure in this invention where laser power is controlled by water temperature.
[0020] In the diagram: 1. U-shaped positioning plate; 2. Positioning block; 3. Positioning assembly; 4. Vertical plate; 5. Laser generator; 6. Horizontal plate; 7. U-shaped water control plate; 8. Synchronization mechanism; 9. Water flow control mechanism; 10. Strip hole; 11. Positioning slider; 12. Positioning slide rod; 13. Positioning motor; 14. Synchronization transmission assembly; 15. Synchronization pulley; 16. Buffer plate; 17. Connecting plate; 18. Fine-tuning assembly; 19. Fine-tuning groove; 20. Fine-tuning plate; 21. Fine-tuning motor; 22. Fine-tuning transmission assembly; 23. Fine-tuning pulley; 24. Buffer hole; 25. L-shaped groove; 26. Synchronization screw; 27. Threaded block. 28. Deflection plate; 29. Fixing ring; 30. Steering ring; 31. Optical camera; 32. Infrared thermometer; 33. Steering gear; 34. Steering motor; 35. Synchronous shaft; 36. Synchronous gear; 37. First pulley; 38. Second pulley; 39. Fixing block; 40. Buffer spring; 41. Water supply pipe; 42. Water outlet pipe; 43. Water tank; 44. Switching valve; 45. Float; 46. Top ring; 47. L-shaped slide bar; 48. Water level gauge; 49. Residual gear; 50. Pointer; 51. Sector groove; 52. Scale; 53. Inclined groove; 54. Positioning screw; 55. Fine-tuning screw. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes an in-situ laser shock peening manufacturing apparatus and method.
[0023] like Figures 1-10As shown, an in-situ laser shock peening manufacturing apparatus includes a U-shaped positioning plate 1, a positioning block 2 inside the U-shaped positioning plate 1, a positioning component 3 for positioning the positioning block 2 inside the U-shaped positioning plate 1, a horizontal plate 6 below the positioning block 2, the positioning block 2 and the horizontal plate 6 being fixedly connected by a vertical plate 4, a laser generator 5 being slidably installed between the two vertical plates 4, the laser head on the laser generator 5 being slidably installed through the horizontal plate 6, a U-shaped water control plate 7 below the horizontal plate 6, the laser generator 5 and the U-shaped water control plate 7 being synchronously adjusted by a synchronization mechanism 8, and a water flow control mechanism 9 being provided inside the U-shaped water control plate 7.
[0024] To perform laser impact at various positions on the workpiece, a positioning assembly 3 is provided. The positioning assembly 3 includes four strip holes 10 set on the loop-shaped positioning plate 1. Positioning sliders 11 are slidably installed in the strip holes 10. Positioning slide rods 12 are fixedly connected between two opposing positioning sliders 11. The positioning slide rods 12 are slidably installed through the positioning blocks 2. Positioning screws 54 are rotatably installed in the strip holes 10. The positioning screws 54 are threaded through the positioning sliders 11. Corresponding two positioning screws 54 rotatably pass through the loop-shaped positioning plate 1 and are connected by a synchronous transmission assembly 14. Specifically, the synchronous transmission assembly 14 includes two synchronous pulleys 15. The two synchronous pulleys 15 are coaxially installed with the two positioning screws 54 respectively. The two synchronous pulleys 15 are connected by a synchronous belt. A positioning motor 13 is installed outside the loop-shaped positioning plate 1. The drive shaft of the positioning motor 13 rotatably passes through the loop-shaped positioning plate 1 and is coaxially installed with the positioning sliders 11.
[0025] Through the above technical features: the positioning motor 13 drives the two positioning screws 54 to rotate, the two positioning screws 54 drive the two positioning sliders 11 to move, the two positioning sliders 11 drive the positioning block 2 to move through the positioning slide rod 12, and the positioning block 2 drives the laser generator 5 to move, so that laser impact can be performed on various positions of the workpiece.
[0026] To apply similar intensity laser impact to workpieces at different heights, a synchronization mechanism 8 is provided. The synchronization mechanism 8 includes a buffer hole 24 on a horizontal plate 6, through which a buffer plate 16 is slidably installed. A fixing block 39 is installed outside the buffer plate 16, and the fixing block 39 is connected to the horizontal plate 6 by a buffer spring 40. A connecting plate 17 is located below the buffer plate 16 and is fixedly connected to a U-shaped water control plate 7. A fine-tuning component 18 for fine-tuning the connecting plate 17 is provided inside the buffer plate 16. It should be noted that the fine-tuning component 18 includes a fine-tuning groove 19 located at the lower end of the buffer plate 16, within which rotation... A fine-tuning screw 55 is installed, and a fine-tuning plate 20 is threadedly installed at the lower end of the fine-tuning screw 55. The fine-tuning plate 20 is slidably installed on the inner wall of the fine-tuning groove 19. The lower end of the fine-tuning plate 20 is fixedly connected to the connecting plate 17. The upper ends of the two fine-tuning screws 55 rotate through the buffer plate 16 and are connected by transmission through the fine-tuning transmission assembly 22. Further, the fine-tuning transmission assembly 22 includes two fine-tuning pulleys 23. The two fine-tuning pulleys 23 are coaxially installed with the two fine-tuning screws 55 respectively. The two fine-tuning pulleys 23 are connected by synchronous belt transmission. A fine-tuning motor 21 is installed on the buffer plate 16. The drive shaft of the fine-tuning motor 21 is coaxially installed with the fine-tuning screw 55.
[0027] In this invention, the lower end of the horizontal plate 6 is provided with two L-shaped grooves 25. A synchronous screw 26 is rotatably installed in the L-shaped grooves 25. A synchronous shaft 35 is rotatably installed between the two L-shaped grooves 25. A first pulley 37 is coaxially installed on the synchronous shaft 35, and a second pulley 38 is coaxially installed on the synchronous screw 26. The first pulley 37 and the second pulley 38 are connected by a synchronous belt drive. One end of the synchronous shaft 35 rotatably passes through the horizontal plate 6 and extends into the buffer hole 24. A synchronous gear 36 is coaxially installed on the outside of the synchronous shaft 35. The buffer plate 16 is provided with a toothed groove that meshes with the synchronous gear 36. The synchronous screw 26 is externally threaded with... A threaded block 27 is provided, on which a deflection plate 28 is rotatably mounted. The ends of the two deflection plates 28 away from the threaded block 27 are rotatably connected to the same fixing ring 29. The fixing ring 29 is fixedly sleeved on the outside of the laser head of the laser generator 5. A steering ring 30 is rotatably mounted on the lower end of the fixing ring 29. An optical camera 31 and an infrared thermometer 32 are mounted on the lower end of the steering ring 30. A steering motor 34 is mounted on the upper end of the fixing ring 29. The drive shaft of the steering motor 34 rotates through the fixing ring 29 and is coaxially mounted with a steering gear 33. The inner wall of the steering ring 30 is provided with an annular tooth groove that meshes with the steering gear 33.
[0028] Through the above technical features: the laser generator 5 is moved to a suitable position, and the two fine-tuning screws 55 are rotated by the fine-tuning motor 21. The two fine-tuning screws 55 drive the fine-tuning plate 20 to rise and fall. The fine-tuning plate 20 drives the spiral water control plate 7 to rise and fall through the connecting plate 17 until the spiral water control plate 7 comes into contact with the workpiece surface. The laser generator 5 is then moved by the positioning component 3 to perform laser impact on the workpiece. When the laser impact on the workpiece is performed, and the laser reaches the protruding part of the workpiece, the connecting plate 17 rises relative to the horizontal plate 6. At this time, the buffer plate 16 drives the synchronous gear 36 to rotate. Synchronous gear 36 drives synchronous shaft 35 to rotate, synchronous shaft 35 drives synchronous screw 26 to rotate, synchronous screw 26 drives threaded block 27 to move, threaded block 27 drives fixed ring 29 to rise and fall through deflection plate 28, fixed ring 29 drives laser head of laser generator 5 to rise until a suitable position is reached. Similarly, when it moves to the concave part of the workpiece, laser head of laser generator 5 descends, which can automatically compensate for the convex and concave amplitude of the workpiece, so that the distance of laser impact on the workpiece surface does not change significantly, and the intensity of laser impact on all parts of the workpiece is the same.
[0029] To automatically adjust the water film thickness, a water flow control mechanism 9 is provided. The water flow control mechanism 9 includes two inclined grooves 53 mounted on the inner wall of the loop-shaped water control plate 7. A water supply pipe 41 is installed on the inclined groove 53 on the left side, and a water outlet pipe 42 is installed on the right side of the loop-shaped water control plate 7, connected to the inclined groove 53. Two water tanks 43 are mounted on the horizontal plate 6. A common switching valve 44 is installed at the end of the outlet of each water tank 43 furthest from the tank 43. The outlet of the switching valve 44 is connected to the water supply pipe 41. A float 45 is installed inside the inclined groove 53, and an L-shaped sliding rod 47 is fixedly connected to the upper end of the float 45. A sliding through-type water control plate 7 is provided. A water level gauge 48 is installed at the upper end of the water level gauge 7. A residual gear 49 is rotatably installed on the water level gauge 48. An L-shaped slide rod 47 is provided with a toothed groove that meshes with the residual gear 49. A sector-shaped groove 51 is provided on the water level gauge 48. A pointer 50 is provided in the sector-shaped groove 51. The pointer 50 is fixedly connected to the smooth part of the residual gear 49. A scale 52 is engraved on the edge of the sector-shaped groove 51. A top ring 46 is provided on the outer sleeve of the L-shaped slide rod 47. The top ring 46 is fixedly connected to the inclined groove 53. It should be noted that both the top ring 46 and the float 45 are provided with contact sensors, and the two contact sensors are matched.
[0030] Through the above technical features: the water tank 43 supplies water to the water supply pipe 41 through the switching valve 44, the water supply pipe 41 supplies water to the inclined trough 53, and the water flows to the outside through the water outlet pipe 42, thereby forming a water film in the loop-shaped water control plate 7. The buoyancy of the water causes the float ball 45 to rise until it contacts the top ring 46. At this time, the contact sensor makes contact, the thickness of the water film reaches the standard, the float ball 45 drives the L-shaped slide bar 47 to rise, the L-shaped slide bar 47 drives the residual gear 49 to rotate, the residual gear 49 drives the pointer 50 to rotate until the appropriate position is reached. When it moves to the protruding part of the workpiece, the loop-shaped water control plate 7 rises, and the laser head of the laser generator 5 synchronously adjusts according to the... The U-shaped water control plate 7 rises, and water leaks from the bottom of the U-shaped water control plate 7. The float ball 45 descends, the contact sensor separates, the flow rate of the water tank 43 increases, and the water film thickness inside the U-shaped water control plate 7 is maintained. When the laser reaches the recessed part of the workpiece, the U-shaped water control plate 7 descends, and the laser head of the laser generator 5 descends synchronously according to the U-shaped water control plate 7. Water leaks from the bottom of the U-shaped water control plate 7, the float ball 45 descends, the contact sensor separates, the flow rate of the water tank 43 increases, and the water film thickness inside the U-shaped water control plate 7 is maintained. This ensures that the thickness of the water film does not change significantly when the laser impacts the workpiece surface, thus maintaining the intensity of the laser impact on the workpiece surface.
[0031] An in-situ laser shock peening manufacturing method, the specific steps of which are as follows: S1: Move the laser head of the laser generator 5 to a suitable position above the workpiece to be strengthened, and adjust the spiral water control plate 7 so that the spiral water control plate 7 contacts the surface of the workpiece. S2: Open the switching valve 44, and supply water to the water supply pipe 41 at a suitable flow rate through one of the water tanks 43. The water supply pipe 41 flows through the inclined groove 53 and is discharged from the outlet pipe 42. At this time, a water film is formed on the surface of the workpiece located in the return-shaped water control plate 7. The water flow control mechanism 9 rises under the action of water buoyancy, so that the float 45 abuts against the top ring 46. The float 45 abuts against the contact sensor on the top ring 46. At this time, the water film thickness is appropriate, maintaining the current water flow speed. S3: The positioning component 3 drives the laser generator 5 to move forward, laser-impacting the workpiece. The laser generator 5 intensifies the impact on the workpiece. The optical camera 31 observes the part of the workpiece that has not yet been impacted but is about to be impacted. The infrared thermometer 32 detects the water temperature after the impact on the workpiece. When the laser is about to reach the protruding part of the workpiece, the laser power is slightly reduced; when the laser is about to reach the concave part of the workpiece, the laser power is slightly increased (e.g., ...). Figure 9 (As shown); when the water temperature after the workpiece impact exceeds the predetermined temperature, it indicates that the laser impact power is too high, and the laser power should be slightly reduced; when the water temperature after the workpiece impact is below the predetermined temperature, it indicates that the laser impact power is too low, and the laser power should be slightly increased (e.g. Figure 10 (as shown) S4: When the laser reaches the raised part of the workpiece, the spiral water control plate 7 rises, and the laser head of the laser generator 5 rises synchronously according to the spiral water control plate 7. Water leaks from the bottom of the spiral water control plate 7, the float ball 45 descends, the contact sensor separates, the flow rate of the water tank 43 increases, and the water film thickness in the spiral water control plate 7 is maintained. When the laser reaches the recessed part of the workpiece, the spiral water control plate 7 descends, and the laser head of the laser generator 5 descends synchronously according to the spiral water control plate 7. Water leaks from the bottom of the spiral water control plate 7, the float ball 45 descends, the contact sensor separates, the flow rate of the water tank 43 increases, and the water film thickness in the spiral water control plate 7 is maintained.
[0032] In S3, when the positioning component 3 drives the laser generator 5 to move forward, the steering ring 30 is driven to rotate by the steering motor 34 to keep the infrared thermometer 32 behind the laser generator 5.
[0033] Working principle: Laser impact on the workpiece: Move the laser generator 5 to a suitable position, and drive the two fine-tuning screws 55 to rotate via the fine-tuning motor 21. The two fine-tuning screws 55 drive the fine-tuning plate 20 to rise and fall. The fine-tuning plate 20 drives the circular water control plate 7 to rise and fall via the connecting plate 17 until the circular water control plate 7 comes into contact with the workpiece surface. Move the laser generator 5 via the positioning component 3. At the same time, the water tank 43 supplies water to the water supply pipe 41 through the switching valve 44. The water supply pipe 41 supplies water to the inclined groove 53 and flows to the outside through the water outlet pipe 42 (the water flow direction is as follows). Figure 7 (As indicated by the middle arrow), thus forming a water film within the loop-shaped water control plate 7 (the water film position is as shown in the image). Figure 7 (As shown in the middle dashed line filling position), the buoyancy of the water causes the float 45 to rise until it comes into contact with the top ring 46. At this time, the contact sensor is in contact, the thickness of the water film is up to standard, the float 45 causes the L-shaped slide bar 47 to rise, the L-shaped slide bar 47 causes the residual gear 49 to rotate, and the residual gear 49 causes the pointer 50 to rotate until it reaches the appropriate position. Laser impact on uneven workpieces: When moving to the protruding part of the workpiece, the connecting plate 17 rises relative to the horizontal plate 6. At this time, the buffer plate 16 drives the synchronous gear 36 to rotate, the synchronous gear 36 drives the synchronous shaft 35 to rotate, the synchronous shaft 35 drives the synchronous screw 26 to rotate, the synchronous screw 26 drives the threaded block 27 to move, the threaded block 27 drives the fixed ring 29 to rise and fall through the deflection plate 28, and the fixed ring 29 drives the laser head of the laser generator 5 to rise until the appropriate position. Similarly, when moving to the concave part of the workpiece, the laser head of the laser generator 5 descends, which can automatically compensate for the protrusion and concavity of the workpiece, so that the distance of the laser impact on the workpiece surface will not change significantly, and the intensity of the laser impact on each part of the workpiece is the same. When the laser reaches the raised part of the workpiece, the spiral water control plate 7 rises, and the laser head of the laser generator 5 rises synchronously according to the spiral water control plate 7. Water leaks from the bottom of the spiral water control plate 7, the float ball 45 descends, the contact sensor separates, the flow rate of the water tank 43 increases, and the water film thickness inside the spiral water control plate 7 is maintained. When the laser reaches the recessed part of the workpiece, the spiral water control plate 7 descends, and the laser head of the laser generator 5 descends synchronously according to the spiral water control plate 7. Water leaks from the bottom of the spiral water control plate 7, the float ball 45 descends, the contact sensor separates, the flow rate of the water tank 43 increases, and the water film thickness inside the spiral water control plate 7 is maintained. This ensures that the thickness of the water film does not change significantly when the laser impacts the workpiece surface, thus maintaining the intensity of the laser impact on the workpiece surface.
[0034] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
[0035] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this invention.
Claims
1. An in-situ laser shock peening manufacturing apparatus, characterized in that: The system includes a spiral-shaped positioning plate (1), a positioning block (2) is provided inside the spiral-shaped positioning plate (1), a positioning component (3) for positioning the positioning block (2) is provided inside the spiral-shaped positioning plate (1), a horizontal plate (6) is provided below the positioning block (2), the positioning block (2) and the horizontal plate (6) are fixedly connected by a vertical plate (4), a laser generator (5) is slidably installed between the two vertical plates (4), the laser head on the laser generator (5) is slidably installed through the horizontal plate (6), a spiral-shaped water control plate (7) is provided below the horizontal plate (6), the laser generator (5) and the spiral-shaped water control plate (7) are synchronously adjusted by a synchronization mechanism (8), and a water flow control mechanism (9) is provided inside the spiral-shaped water control plate (7).
2. The in-situ laser shock peening manufacturing apparatus according to claim 1, characterized in that: The positioning component (3) includes four strip holes (10) set on the loop-shaped positioning plate (1). A positioning slider (11) is slidably installed in the strip hole (10). A positioning slide rod (12) is fixedly connected between two opposite positioning sliders (11). The positioning slide rod (12) is slidably installed through the positioning block (2). A positioning screw (54) is rotatably installed in the strip hole (10). The positioning screw (54) is threaded through the positioning slider (11). Two corresponding positioning screws (54) rotatably pass through the loop-shaped positioning plate (1) and are connected by transmission through the synchronous transmission component (14). A positioning motor (13) is installed outside the loop-shaped positioning plate (1). The drive shaft of the positioning motor (13) rotatably passes through the loop-shaped positioning plate (1) and is coaxially installed with the positioning slider (11).
3. The in-situ laser shock peening manufacturing apparatus according to claim 2, characterized in that: The synchronous transmission assembly (14) includes two synchronous pulleys (15), which are coaxially mounted with two positioning screws (54) respectively, and are connected to each other by a synchronous belt drive.
4. The in-situ laser shock peening manufacturing apparatus according to claim 1, characterized in that: The synchronization mechanism (8) includes a buffer hole (24) on the horizontal plate (6), a buffer plate (16) is slidably installed through the buffer hole (24), a fixing block (39) is installed outside the buffer plate (16), the fixing block (39) is connected to the horizontal plate (6) by a buffer spring (40), a connecting plate (17) is provided below the buffer plate (16), the connecting plate (17) is fixedly connected to the loop-shaped water control plate (7), and the buffer plate (16) is provided with a mechanism for adjusting the flow of the connecting plate (17). The fine-tuning component (18) for fine-tuning has two L-shaped grooves (25) at the lower end of the horizontal plate (6). A synchronous screw (26) is rotatably installed in the L-shaped groove (25). A synchronous shaft (35) is rotatably installed between the two L-shaped grooves (25). A first pulley (37) is coaxially installed on the synchronous shaft (35). A second pulley (38) is coaxially installed on the synchronous screw (26). The first pulley (37) and the second pulley (38) are connected by a synchronous belt drive. The synchronous shaft (35) One end of the synchronous screw (25) rotates through the horizontal plate (6) and extends into the buffer hole (24). A synchronous gear (36) is coaxially mounted on the outside of the synchronous shaft (35). The buffer plate (16) is provided with a tooth groove that meshes with the synchronous gear (36). A threaded block (27) is threaded onto the outside of the synchronous screw (26). A deflection plate (28) is rotatably mounted on the threaded block (27). The ends of the two deflection plates (28) away from the threaded block (27) are rotatably connected to the same fixing ring (29). The fixing ring (29) is fixed. A fixed ring (29) is mounted on the laser head of the laser generator (5). A steering ring (30) is rotatably mounted on the lower end of the fixed ring (29). An optical camera (31) and an infrared thermometer (32) are mounted on the lower end of the steering ring (30). A steering motor (34) is mounted on the upper end of the fixed ring (29). The drive shaft of the steering motor (34) rotates through the fixed ring (29) and is coaxially mounted with a steering gear (33). The inner wall of the steering ring (30) is provided with an annular tooth groove that meshes with the steering gear (33).
5. The in-situ laser shock peening manufacturing apparatus according to claim 4, characterized in that: The fine-tuning component (18) includes a fine-tuning groove (19) located at the lower end of the buffer plate (16). A fine-tuning screw (55) is rotatably installed in the fine-tuning groove (19). A fine-tuning plate (20) is threadedly installed at the lower end of the fine-tuning screw (55). The fine-tuning plate (20) is slidably installed on the inner wall of the fine-tuning groove (19). The lower end of the fine-tuning plate (20) is fixedly connected to the connecting plate (17). The upper ends of the two fine-tuning screws (55) rotatably pass through the buffer plate (16) and are connected by transmission through the fine-tuning transmission component (22). A fine-tuning motor (21) is installed on the buffer plate (16). The drive shaft of the fine-tuning motor (21) is coaxially installed with the fine-tuning screw (55).
6. The in-situ laser shock peening manufacturing apparatus according to claim 5, characterized in that: The fine-tuning transmission assembly (22) includes two fine-tuning pulleys (23), which are coaxially mounted with two fine-tuning screws (55) respectively, and are connected to each other by a synchronous belt drive.
7. The in-situ laser shock peening manufacturing apparatus according to claim 1, characterized in that: The water flow control mechanism (9) includes two inclined grooves (53) set on the inner wall of the loop-shaped water control plate (7). A water supply pipe (41) is installed on the inclined groove (53) on the left side. A water outlet pipe (42) is installed on the right side of the loop-shaped water control plate (7). The water outlet pipe (42) is connected to the inclined groove (53). Two water tanks (43) are installed on the horizontal plate (6). The same switching valve (44) is installed at the end of the outlet of the two water tanks (43) away from the water tank (43). The water outlet of the switching valve (44) is connected to the water supply pipe (41). A float (45) is provided in the inclined groove (53). An L-shaped slide rod (47) is fixedly connected to the upper end of the float (45). The L-shaped slide rod (47) slides through the circular water control plate (7). A water level gauge (48) is installed on the upper end of the circular water control plate (7). A residual gear (49) is rotatably installed on the water level gauge (48). The L-shaped slide rod (47) has a toothed groove that meshes with the residual gear (49). The water level gauge (48) has a fan-shaped groove (51). A pointer (50) is installed in the fan-shaped groove (51). The pointer (50) is fixedly connected to the smooth part of the residual gear (49). A scale (52) is engraved on the edge of the fan-shaped groove (51). A top ring (46) is fitted on the L-shaped slide rod (47). The top ring (46) is fixedly connected to the ramp groove (53).
8. An in-situ laser shock peening manufacturing method, applicable to the in-situ laser shock peening manufacturing apparatus according to any one of claims 1-7, characterized in that, The specific steps are as follows: S1: Move the laser head of the laser generator (5) to a suitable position above the workpiece to be strengthened, and adjust the water control plate (7) so that the water control plate (7) contacts the surface of the workpiece. S2: Open the switching valve (44) and supply water to the water supply pipe (41) at a suitable flow rate through one of the water tanks (43). The water supply pipe (41) flows through the inclined groove (53) and is discharged through the outlet pipe (42). At this time, a water film is formed on the surface of the workpiece located in the return-shaped water control plate (7). The water flow control mechanism (9) rises under the action of water buoyancy, so that the float (45) abuts against the top ring (46). The float (45) abuts against the contact sensor on the top ring (46). At this time, the water film thickness is appropriate, maintaining the current water flow speed. S3: Drive the laser generator (5) to move by the positioning component (3) to laser impact the workpiece, strengthen the impact of the workpiece by the laser generator (5), observe the part of the workpiece that has not been impacted and is about to be impacted by the optical camera (31), and detect the water temperature after the impact of the workpiece by the infrared thermometer (32). When the laser is about to reach the convex part of the workpiece, slightly reduce the laser power. When the laser is about to reach the concave part of the workpiece, slightly increase the laser power. When the water temperature after the impact of the workpiece is detected to be higher than the predetermined temperature, it indicates that the laser impact power is high, so slightly reduce the laser power. When the water temperature after the impact of the workpiece is detected to be lower than the predetermined temperature, it indicates that the laser impact power is low, so slightly increase the laser power. S4: When the laser reaches the protruding part of the workpiece, the spiral water control plate (7) rises, and the laser head of the laser generator (5) rises synchronously according to the spiral water control plate (7). Water leaks from the bottom of the spiral water control plate (7), the float (45) descends, the contact sensor separates, the flow rate of the water tank (43) increases, and the water film thickness in the spiral water control plate (7) is maintained. When the laser reaches the concave part of the workpiece, the spiral water control plate (7) descends, and the laser head of the laser generator (5) descends synchronously according to the spiral water control plate (7). Water leaks from the bottom of the spiral water control plate (7), the float (45) descends, the contact sensor separates, the flow rate of the water tank (43) increases, and the water film thickness in the spiral water control plate (7) is maintained.
9. The in-situ laser shock peening manufacturing apparatus and method according to claim 8, characterized in that: In S3, when the positioning component (3) drives the laser generator (5) to move, the steering ring (30) is driven to rotate by the steering motor (34) to keep the infrared thermometer (32) behind the laser generator (5) in motion.