A laser cutting device for metal pipes for engines

Abstract

The application discloses a kind of laser cutting devices of metal pipe fittings for engine, it is related to laser cutting technical field, including workbench, the upper side of the workbench is fixedly connected with frame, the upper side of the frame is fixedly connected with alarm, one side of the workbench is equipped with controller, the upper side of the workbench is equipped with adjusting mechanism for adjusting pipe fitting cutting position, one side of the adjusting mechanism is equipped with clamping mechanism for clamping engine pipe fitting, one side of the clamping mechanism is equipped with collection box, the adjusting mechanism includes support seat fixedly connected on the upper side of workbench, by depth fusion with intelligent visual detection, adaptive decision and accurate execution, the optimization of hanging slag treatment and the minimization of energy consumption are realized.Specifically, the system can intelligently identify the "slight" and "serious" states of the hanging slag through a high-resolution camera and an embedded algorithm, and accordingly initiate different post-processing procedures.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a laser cutting device for metal pipes used in engines. Background Technology

[0002] Engine metal tubing is an indispensable key component in modern industrial equipment, especially in aviation, aerospace, and high-end automotive engines. Traditionally, these tubing components are mainly manufactured using processes such as casting, forging, or welding after bending. Laser cutting of engine metal tubing utilizes extremely high energy density to instantly vaporize the metal, and the minimal heat-affected zone effectively protects the material's microstructure and mechanical strength, preventing deformation or material embrittlement caused by overheating.

[0003] Precision laser-cut engine metal components are widely used in various core engine systems. For example, in the fuel system, they serve as high-pressure oil pipes and supply / return lines to ensure precise fuel delivery and atomization; in the lubrication system, they serve as oil delivery and return lines to ensure reliable lubrication and heat dissipation for various engine components; and in the hydraulic control system, they serve as transmission lines for actuators or control valves to transmit precise hydraulic pressure.

[0004] When existing engine pipes are laser-cut, if the pipe wall thickness increases or the cutting speed is too fast, the laser power may not be sufficient to completely penetrate the pipe, resulting in an uncut adhesion layer at the bottom. Furthermore, if the cutting speed is too slow, excessive combustion may occur, leading to excessive energy input and over-melting at the bottom of the cut. The molten metal accumulates under the action of surface tension, and after cooling, it forms a rough slag, which in turn leads to incomplete cutting of engine pipes and adhesion at the cut.

[0005] Adhesion at the pipe fitting cut point requires secondary cutting, which typically involves a full circle of laser cutting. The main drawback of this full circle of secondary cutting is its negative impact on pipe quality and production efficiency. It repeatedly heats the high-quality cut area formed in the initial cut, causing the heat-affected zone to expand and the grains to become coarser, potentially leading to a decline in material properties or the generation of additional thermal stress. At the same time, it inevitably results in a shorter pipe length, causing the final dimensions to exceed tolerances and become unusable. Furthermore, the repositioning and calibration of the secondary cut is time-consuming and gas-intensive, directly reducing production efficiency and increasing production costs. Summary of the Invention

[0006] The purpose of this invention is to provide a laser cutting device for metal pipes used in engines, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a laser cutting device for metal pipe fittings for engines, comprising a worktable, a frame fixedly connected to the upper side of the worktable, an alarm fixedly connected to the upper side of the frame, a controller provided on one side of the worktable, an adjustment mechanism for adjusting the cutting position of the pipe fitting provided on the upper side of the worktable, a clamping mechanism for clamping the engine pipe fitting provided on one side of the adjustment mechanism, and a collection box provided on one side of the clamping mechanism.

[0008] According to the above technical solution, the adjustment mechanism includes a support base fixedly connected to the upper side of the workbench. A first electric slide rail is fixedly connected to the upper side of the support base. A second electric slide rail is fixedly connected to the sliding end of the first electric slide rail. A third electric slide rail is fixedly connected to the sliding end of the second electric slide rail. A connecting frame is fixedly connected to the sliding end of the third electric slide rail. A connecting block is fixedly connected to one side of the connecting frame. A cutting component is provided on the lower side of the connecting block.

[0009] According to the above technical solution, the cutting assembly includes an upper positioning ring fixedly connected to the lower side of the connecting block, a connecting sleeve fixedly connected to the lower side of the upper positioning ring, a ceramic ring fixedly connected to the lower side of the connecting sleeve, a nozzle fixedly connected to the lower side of the ceramic ring, a camera and a support plate fixedly connected to the outer side of the ceramic ring, an electric push rod fixedly connected to the upper side of the support plate, the output end of the electric push rod passing through the support plate and fixedly connected to a rubber head, and an air inlet valve passing through the outer side of the ceramic ring.

[0010] According to the above technical solution, the controller is equipped with a database and a judgment module. The database contains identification photos of different slag adhesion lengths in the cut areas of the orthogonal and oblique pipes. The camera is used to capture images of the cut area of ​​the engine pipe. After capturing the image of the cut area of ​​the engine pipe, the camera converts the image into an electrical signal and sends it to the judgment module. The judgment module compares the image with the identification photos of different slag adhesion lengths in the internal database, pre-identifies the length of the slag adhesion, and classifies the length of the slag adhesion into no adhesion, adhesion that is too short, and adhesion that is too long based on the obtained photos of the cut area of ​​the engine pipe.

[0011] According to the above technical solution, an optical fiber is fixedly connected to the upper side of the upper positioning ring, and an optical core is fixedly connected to the lower side of the optical fiber. An upper protective mirror is provided on the lower side of the optical core and is fixedly connected to a connecting sleeve. A collimating mirror is provided on the lower side of the upper protective mirror and is fixedly connected to a connecting sleeve. A focusing mirror is provided on the lower side of the collimating mirror and is fixedly connected to a connecting sleeve. A middle protective mirror is provided on the lower side of the focusing mirror and is fixedly connected to a connecting sleeve. A lower protective mirror is provided on the lower side of the middle protective mirror and is fixedly connected to a ceramic ring.

[0012] According to the above technical solution, the clamping mechanism includes an H-shaped support fixedly connected to the upper side of the workbench. A speed reducer is fixedly connected to the upper side of the H-shaped support. A first motor is fixedly connected to one side of the speed reducer. The output end of the first motor is fixedly connected to the input end of the speed reducer. A connecting plate is fixedly connected to the output end of the speed reducer. A rotating plate is fixedly connected to one side of the connecting plate. A slot is provided on one side of the rotating plate. A sliding groove is provided inside the rotating plate.

[0013] According to the above technical solution, a positioning slider is slidably connected inside the slide groove, a positioning groove is provided on the upper side of the positioning slider, a second motor is fixedly connected to the upper side of the rotating plate, a rotating shaft is fixedly connected to the output end of the second motor, a positioning plate is fixedly connected to the upper side of the rotating plate, the other end of the rotating shaft is connected to the positioning plate bearing, and two connecting shafts are fixedly connected to the outer side of the rotating shaft, with a locking pin fixedly connected to one side of each connecting shaft.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0015] 1. By deeply integrating intelligent visual detection, adaptive decision-making, and precise execution, the system optimizes slag removal and minimizes energy consumption. Specifically, through a high-resolution camera and built-in algorithms, the system intelligently identifies the "slight" and "severe" states of slag adhesion and initiates distinctly different post-processing procedures accordingly. For slight adhesion, it innovatively employs an electrically driven rubber head for mechanical impact separation. This avoids unnecessary repeated starts of the laser cutting head, significantly saving energy consumption and greatly improving the overall efficiency of a single cutting operation. Simultaneously, the system cleverly avoids the risk of scrap warping and damaging the already precision-machined surface by pre-setting pipe posture adjustment logic (such as rotating the left-side oblique-cut pipe 180 degrees), demonstrating its meticulous consideration in ensuring the final processing quality.

[0016] 2. For severe slag-laden defects, this device abandons the traditional method of double-cutting the entire circle and instead adopts a vision-based "intelligent segmented re-cutting" strategy. Based on the precise location of the slag-laden material recorded by a camera, the system controls the pipe fitting to rotate to a specific angle for precise local repair, minimizing repeated laser irradiation of high-quality cut areas. This precise operation effectively avoids a series of metallurgical damages caused by repeated heating, such as expansion of the heat-affected zone, grain coarsening, performance degradation, and the introduction of thermal stress, fundamentally ensuring the structural integrity and long-term reliability of the pipe fitting. Ultimately, through its highly intelligent and precise design, this device achieves comprehensive benefits—increased production efficiency, reduced energy costs, and reduced product scrap rates—while ensuring consistently excellent cutting quality, demonstrating high engineering and technological practical value. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a laser cutting device for engine metal tubing according to the present invention;

[0019] Figure 2 This is a schematic diagram of the adjustment mechanism in this invention;

[0020] Figure 3 This is a schematic diagram of the cutting component in this invention;

[0021] Figure 4 This is a partial cross-sectional view of the cutting component in this invention;

[0022] Figure 5 This is a schematic diagram of the clamping mechanism in this invention;

[0023] Figure 6 This is a schematic diagram illustrating the angle adjustment of the adhesive pipe fittings in this invention;

[0024] Figure 7 This is a schematic diagram of the adhesion area of ​​the adhesive pipe fitting in this invention;

[0025] In the diagram: 1. Frame;

[0026] 3. Adjustment mechanism; 31. Support base; 32. First electric slide rail; 33. Second electric slide rail; 34. Third electric slide rail; 35. Connecting frame; 36. Connecting block; 37. Cutting assembly; 371. Upper positioning ring; 372. Connecting sleeve; 373. Air inlet valve; 374. Ceramic ring; 375. Camera; 376. Electric push rod; 377. Support plate; 378. Rubber head; 379. Nozzle; 381. Fiber optic cable; 382. Optical core; 383. Upper protective lens; 384. Collimating lens; 385. Focusing lens; 386. Middle protective lens; 387. Lower protective lens;

[0027] 4. Workbench;

[0028] 6. Clamping mechanism; 61. H-shaped support base; 62. First motor; 63. Reducer; 64. Connecting plate; 65. Positioning plate; 66. Connecting shaft; 661. Locking post; 67. Positioning slider; 68. Second motor; 69. Rotating plate; 691. Slide groove; 692. Locking groove;

[0029] 7. Collection box; 8. Controller; 9. Alarm. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-7 The present invention provides a technical solution: a laser cutting device for metal pipe fittings for engines, including a worktable 4, a frame 1 fixedly connected to the upper side of the worktable 4, an alarm 9 fixedly connected to the upper side of the frame 1, a controller 8 provided on one side of the worktable 4, an adjustment mechanism 3 for adjusting the cutting position of the pipe fittings provided on the upper side of the worktable 4, a clamping mechanism 6 for clamping the engine pipe fittings provided on one side of the adjustment mechanism 3, and a collection box 7 provided on one side of the clamping mechanism 6.

[0032] Please see Figure 2 The adjustment mechanism 3 includes a support base 31 fixedly connected to the upper side of the workbench 4. A first electric slide rail 32 is fixedly connected to the upper side of the support base 31. A second electric slide rail 33 is fixedly connected to the sliding end of the first electric slide rail 32. A third electric slide rail 34 is fixedly connected to the sliding end of the second electric slide rail 33. A connecting frame 35 is fixedly connected to the sliding end of the third electric slide rail 34. A connecting block 36 is fixedly connected to one side of the connecting frame 35. A cutting component 37 is provided on the lower side of the connecting block 36.

[0033] The following is a supplementary explanation based on the above structure: the sliding end of the first electric slide rail 32 is used to drive the laser cutting head to slide left and right, thereby adjusting the position and the arc of the bevel cut required for the engine pipe; the sliding end of the second electric slide rail 33 is used to drive the laser cutting head to move back and forth, thereby moving the laser cutting head closer to or away from the cutting point of the engine pipe; the sliding end of the third electric slide rail 34 is used to drive the laser cutting head to move up and down, thereby moving the laser cutting head closer to or away from the engine pipe.

[0034] Please see Figure 3 The cutting assembly 37 includes an upper positioning ring 371 fixedly connected to the lower side of the connecting block 36. A connecting sleeve 372 is fixedly connected to the lower side of the upper positioning ring 371. A ceramic ring 374 is fixedly connected to the lower side of the connecting sleeve 372. A nozzle 379 is fixedly connected to the lower side of the ceramic ring 374. A camera 375 and a support plate 377 are fixedly connected to the outer side of the ceramic ring 374. An electric push rod 376 is fixedly connected to the upper side of the support plate 377. The output end of the electric push rod 376 passes through the support plate 377 and is fixedly connected to a rubber head 378. An air intake valve 373 passes through the outer side of the ceramic ring 374.

[0035] The following is a supplementary explanation based on the above structure: the extension and retraction of the output end of the electric push rod 376 is used to drive the rubber head 378 to move up and down, thereby impacting the adhered engine pipe components.

[0036] Please see Figure 4 An optical fiber 381 is fixedly connected to the upper side of the upper positioning ring 371. An optical core 382 is fixedly connected to the lower side of the optical fiber 381. An upper protective mirror 383 is provided on the lower side of the optical core 382 and is fixedly connected to the connecting sleeve 372. A collimating mirror 384 is provided on the lower side of the upper protective mirror 383 and is fixedly connected to the connecting sleeve 372. A focusing mirror 385 is provided on the lower side of the collimating mirror 384 and is fixedly connected to the connecting sleeve 372. A middle protective mirror 386 is provided on the lower side of the focusing mirror 385 and is fixedly connected to the connecting sleeve 372. A lower protective mirror 387 is provided on the lower side of the middle protective mirror 386 and is fixedly connected to the ceramic ring 374.

[0037] The following is a supplementary explanation based on the above structure: the optical core 382 is the core medium carrying laser energy transmission, while the outer fiber optic cable 381 serves as a protective structure, ensuring that the internal fiber is not damaged by mechanical movement and external interference. The laser first reaches the upper protective mirror 383, located at the entrance of the optical path. Its main function is to achieve a dust-proof seal, effectively preventing external contaminants from entering the cutting head, thus providing a clean working environment for the subsequent collimating mirror 384. The collimating mirror 384, utilizing its specially designed convex structure, shapes the originally divergent laser beam into a uniform parallel beam through optical refraction, completing the initial laser control. Subsequently, the parallel laser enters the focusing mirror 385, which plays a crucial role in energy convergence, refocusing the parallel light into a very small, high-energy-density spot for effective material processing. To protect the expensive focusing mirror 385 from contamination, a middle protective mirror 386 is installed below it. This mirror further provides sealing protection, forming the second barrier of the optical system. The bottom protective mirror 387 faces the processing area directly. Its core functions include effectively blocking molten metal slag that splashes upwards during piercing and cutting, while also isolating the internal optical system from interference from external cutting gases. The auxiliary cutting gas of the entire system is precisely controlled by the inlet valve 373, flows through the gas path channel formed by the ceramic ring 374, and finally merges with the focused laser beam at the nozzle 379 outlet, working together to act on the workpiece to complete a high-precision and high-efficiency cutting process.

[0038] Please see Figure 5The clamping mechanism 6 includes an H-shaped support base 61 fixedly connected to the upper side of the worktable 4. A reducer 63 is fixedly connected to the upper side of the H-shaped support base 61. A first motor 62 is fixedly connected to one side of the reducer 63. The output end of the first motor 62 is fixedly connected to the input end of the reducer 63. A connecting plate 64 is fixedly connected to the output end of the reducer 63. A rotating plate 69 is fixedly connected to one side of the connecting plate 64. A slot 692 is provided on one side of the rotating plate 69. A sliding groove 691 is provided inside the rotating plate 69. A positioning slider 67 is slidably connected inside the sliding groove 691. A positioning groove is provided on the upper side of the positioning slider 67. A second motor 68 is fixedly connected to the upper side of the rotating plate 69. A rotating shaft is fixedly connected to the output end of the second motor 68. A positioning plate 65 is fixedly connected to the upper side of the rotating plate 69. The other end of the rotating shaft is connected to the positioning plate 65 by a bearing. Two connecting shafts 66 are fixedly connected to the outer side of the rotating shaft. A locking pin 661 is fixedly connected to one side of each connecting shaft 66.

[0039] The following is a supplementary explanation of the above structure: the slot 692 is used to place one straight edge of the bent metal tube, the positioning slot is used to position the other straight edge of the bent metal tube, the positioning slider 67 is used to drive the bent metal tube to slide along the slide groove 691, thereby aligning the metal tube with the cutting point of the cutting assembly 37. The rotation of the output end of the first motor 62 is used to rotate the metal tube, thereby rotating the laser cutting point around the outside of the metal tube to complete the straight cut of the metal tube. If a slanted cut is required, it is only necessary to coordinate the synchronous movement of the sliding end of the first electric slide rail 32 with the rotation of the output end of the first motor 62. The rotation of the output end of the second motor 68 is used to drive the rotating shaft to rotate, thereby driving the locking post 661 to rotate, thereby pressing or releasing the placed engine tube.

[0040] The controller 8 has a database and a judgment module inside. The database contains identification photos of different slag adhesion lengths in the cut areas of the orthogonal and oblique pipes. The camera 375 is used to capture images of the cut area of ​​the engine pipe. After the camera 375 captures the image of the cut area of ​​the engine pipe, it converts the image into an electrical signal and sends it to the judgment module. The judgment module compares it with the identification photos of different slag adhesion lengths in the internal database, pre-identifies the length of slag adhesion, and classifies the length of slag adhesion into no adhesion, adhesion that is too short, and adhesion that is too long based on the obtained photos of the cut area of ​​the engine pipe.

[0041] Every time the output of the first motor 62 rotates 45 degrees, the camera 375 will take a picture once. Every time the output of the first motor 62 rotates 90 degrees, the controller 8 will record whether the slag is captured.

[0042] After the laser cutting of the metal pipe is completed, when the judgment module determines that there is no sticky residue, the alarm 9 will light up a green light to remind the staff that the cutting is complete. The staff will then remove the cut engine pipe and insert a new engine pipe for cutting.

[0043] After the laser cutting of metal pipes is completed, the system's built-in intelligent judgment module will evaluate the cut quality in real time based on a preset algorithm. When the diagnosis concludes that the length of the slag adhesion is within the allowable range of the process, and the high-resolution camera 375 integrated near the cutting head only captures one such defect in its single rotation scan cycle, the system will trigger an energy-saving and efficient post-processing plan. Given the physical nature of such slight adhesion, it is usually not due to the overall metallurgical bonding of the cross-section, but rather to the presence of fine metal fibers that have not been completely vaporized by the laser in local micro-regions, or fragile "micro-bridges" formed by trace amounts of molten metal that have re-solidified during the cooling process. Although these bridges have enough structural strength to keep the scrap from falling off temporarily, their macroscopic mechanical properties—especially toughness and impact resistance—have been significantly degraded, eliminating the need to restart the high-energy-consuming laser cutting head for repair cutting.

[0044] When slag adheres to a single point, the judgment module compares the image captured by the camera 375 with the image recognized in the database to determine the adhesion of the slag. If the slag is too short, the controller 8 controls the rubber head 378 to hammer it. If the slag is too long, the controller 8 controls the laser to cut it.

[0045] At this point, the system controller 8 sends a command to the high-precision electric push rod 376, causing its output shaft to extend and drive the specially designed rubber head 378 to move axially downwards, applying a controllable instantaneous impact load to the adhered engine pipe component waste. The kinetic energy generated by this impact is sufficient to break these fragile microscopic connecting bridges, thereby allowing the waste to detach smoothly and achieving the cleaning purpose. Please refer to... Figure 6 The schematic diagram shows that 'a' represents a left-angled cut on the engine pipe, and 'b' corresponds to a right-angled cut. To prevent the right-cut surface of the pipe scrap from warping upwards due to unbalanced force during the hammering operation of the rubber head 378 when using the left-angled cut (state a), which could then impact and damage the main cut surface of the machined engine pipe, the system needs to predict and adjust the posture before hammering. Specifically, the controller 8 instructs the output shaft of the first motor 62 to rotate precisely 180 degrees, switching the pipe's posture from state a to state b. This posture conversion ensures that the potential warping direction of the scrap avoids the main cut surface during subsequent hammering, thus fundamentally eliminating the risk of damaging the machined precision surface.

[0046] Conversely, when the judgment module diagnoses that the length of the slag adhesion exceeds the standard, or when the camera 375 captures adhesion more than once in a single scan (see [link]), Figure 7 The presence of excessive slag on the cut surface (clearly demonstrating the defect) indicates a more serious process anomaly. This situation is usually attributed to a severe mismatch in core process parameters, such as insufficient laser energy output, focus drift, or improper auxiliary gas parameters. This results in the tube not being effectively separated, forming a large-area macroscopic metal connection with considerable strength and toughness. At this point, the mechanical properties of the adhered area are close to those of the tube matrix itself, rather than easily removed fragile burrs. If mechanical hammering is still attempted, the enormous impact energy applied by the rubber hammer will not be effectively used to cut these strong connections. Instead, it will be absorbed by the entire tube, easily causing irreversible plastic deformation of the tube opening (such as ellipticization or crushing), leading to workpiece scrap.

[0047] Therefore, the system determines that a secondary laser cutting procedure must be initiated to repair such cases. This secondary cutting path is not a simple recutting of the entire path, but rather a precise plan based on the slag position information collected by camera 375 during the initial diagnostic scan. The system records the precise rotation angle of the output shaft of the first motor 62 each time camera 375 captures a long slag deposit. Based on this data, the system employs an intelligent shortest path cutting strategy:

[0048] If the slag only exists within the range of the first motor 62 rotating 90 degrees clockwise, then during the secondary cutting, the first motor 62 only needs to run clockwise to 90 degrees and then immediately turn back.

[0049] If the slag only exists within the range of the first motor 62 rotating 180 degrees clockwise, then the first motor 62 will rotate back after running clockwise to 180 degrees.

[0050] If the slag only exists within the range of 270 degrees clockwise rotation of the first motor 62 (i.e., 90 degrees counterclockwise), in order to optimize the path, the system controls the first motor 62 to rotate 180 degrees counterclockwise and then turn back.

[0051] If the slag only exists when the first motor 62 rotates 360 degrees clockwise (i.e., the original position), the system controls the first motor 62 to rotate 90 degrees counterclockwise and then turn back.

[0052] When the system detects that there are two or more long slag deposits, the controller 8 will determine that it is a multi-point or ring-shaped adhesion, and then instruct the output shaft of the first motor 62 to perform a complete 360-degree rotation to perform a secondary full-coverage cut on the entire cut.

[0053] When there is more than one slag deposit, the controller 8 automatically records each time the camera 375 captures a slag deposit. Then, it controls the first motor 62 to drive the metal pipe to rotate in different directions and at different angles, adjusting different cutting paths to cut the slag deposit. The shortest cutting path is used to cut the slag deposit, reducing the need for repeated cutting of already cut areas.

[0054] This precise secondary cutting strategy, based on visual perception and path optimization, minimizes repeated heating and processing of the already formed high-quality cut area. This effectively avoids a series of metallurgical damages caused by repeated laser scanning, such as expansion of the heat-affected zone, coarsening of material grains, degradation of mechanical properties, and introduction of additional thermal stress, significantly improving repair quality and yield. Ultimately, this system achieves precise, efficient, and energy-saving treatment of slag-laden defects, perfectly balancing processing quality and production costs.

[0055] By deeply integrating intelligent visual inspection, adaptive decision-making, and precise execution, the system optimizes slag removal and minimizes energy consumption. Specifically, using a high-resolution camera 375 and built-in algorithms, the system intelligently identifies "slight" and "severe" slag adhesion and initiates distinctly different post-processing procedures accordingly. For slight adhesion, it innovatively employs a rubber head driven by an electric push rod 376 for mechanical impact separation. This avoids unnecessary repeated starts of the laser cutting head, significantly saving energy consumption and greatly improving the overall efficiency of a single cutting operation. Simultaneously, the system cleverly avoids the risk of scrap warping and damaging the already precision-machined surface by pre-setting pipe posture adjustment logic (such as rotating the left-angled pipe 180 degrees), demonstrating its meticulous consideration in ensuring the final processing quality.

[0056] For severe slag buildup defects, this device abandons the traditional method of double-cutting the entire circle and instead adopts a vision-based "intelligent segmented re-cutting" strategy. Based on the precise location of the slag recorded by a 375-degree camera, the system controls the pipe fitting to rotate to a specific angle for precise local repair, minimizing repeated laser irradiation of high-quality cut areas. This precise operation effectively avoids a series of metallurgical damages caused by repeated heating, such as expansion of the heat-affected zone, grain coarsening, performance degradation, and the introduction of thermal stress, fundamentally ensuring the structural integrity and long-term reliability of the pipe fitting. Ultimately, through its highly intelligent and precise design, this device achieves comprehensive benefits—increased production efficiency, reduced energy costs, and lower product scrap rates—while ensuring consistently excellent cutting quality, demonstrating high engineering and technological practical value.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser cutting device for metal pipe fittings for engines, comprising a worktable (4), characterized in that, A frame (1) is fixedly connected to the upper side of the workbench (4), an alarm (9) is fixedly connected to the upper side of the frame (1), a controller (8) is provided on one side of the workbench (4), an adjustment mechanism (3) for adjusting the cutting position of the pipe fitting is provided on the upper side of the workbench (4), a clamping mechanism (6) is provided on one side of the adjustment mechanism (3), and a collection box (7) is provided on one side of the clamping mechanism (6). The adjustment mechanism (3) includes a cutting component (37); The cutting assembly (37) includes an upper positioning ring (371), a connecting sleeve (372) is fixedly connected to the lower side of the upper positioning ring (371), a ceramic ring (374) is fixedly connected to the lower side of the connecting sleeve (372), a nozzle (379) is fixedly connected to the lower side of the ceramic ring (374), a camera (375) and a support plate (377) are fixedly connected to the outer side of the ceramic ring (374), an electric push rod (376) is fixedly connected to the upper side of the support plate (377), the output end of the electric push rod (376) passes through the support plate (377) and is fixedly connected to a rubber head (378), and an air inlet valve (373) passes through the outer side of the ceramic ring (374). The clamping mechanism (6) includes an H-shaped support base (61) fixedly connected to the upper side of the workbench (4), a reducer (63) fixedly connected to the upper side of the H-shaped support base (61), and a first motor (62) fixedly connected to one side of the reducer (63). The controller (8) is equipped with a database and a judgment module. The database contains identification photos of different slag adhesion lengths in the cutting areas of the orthogonal and oblique pipes. The camera (375) is used to take pictures of the cut area of ​​the engine pipe. When there is slag in a single spot, the judgment module compares the image captured by the camera (375) with the image recognized in the database to determine the adhesion of the slag. When the slag is too short, the controller (8) controls the rubber head (378) to hammer it. When the slag is too long, the controller (8) controls the laser to cut it. When there is more than one slag deposit, the controller (8) automatically records that each time the camera (375) captures a slag deposit, it controls the first motor (62) to drive the metal pipe to rotate in different directions at different angles, and adjusts different cutting paths to cut the slag deposit.

2. The laser cutting device for engine metal tubing according to claim 1, characterized in that, The upper side of the workbench (4) is fixedly connected to a support base (31), the upper side of the support base (31) is fixedly connected to a first electric slide rail (32), the sliding end of the first electric slide rail (32) is fixedly connected to a second electric slide rail (33), and the sliding end of the second electric slide rail (33) is fixedly connected to a third electric slide rail (34).

3. The laser cutting device for engine metal tubing according to claim 2, characterized in that, The sliding end of the third electric slide rail (34) is fixedly connected to a connecting frame (35), and a connecting block (36) is fixedly connected to one side of the connecting frame (35). The cutting component (37) is located on the lower side of the connecting block (36), and the upper positioning ring (371) is fixedly connected to the lower side of the connecting block (36).

4. The laser cutting device for engine metal tubing according to claim 1, characterized in that, An optical fiber (381) is fixedly connected to the upper side of the upper positioning ring (371), and an optical core (382) is fixedly connected to the lower side of the optical fiber (381). An upper protective mirror (383) is provided on the lower side of the optical core (382), and the upper protective mirror (383) is fixedly connected to the connecting sleeve (372).

5. The laser cutting device for engine metal tubing according to claim 4, characterized in that, The lower side of the upper protective lens (383) is provided with a collimating lens (384) and the collimating lens (384) is fixedly connected to the connecting sleeve (372). The lower side of the collimating lens (384) is provided with a focusing lens (385) and the focusing lens (385) is fixedly connected to the connecting sleeve (372).

6. The laser cutting device for engine metal tubing according to claim 5, characterized in that, The focusing lens (385) has a middle protective lens (386) on its lower side and the middle protective lens (386) is fixedly connected to the connecting sleeve (372). The middle protective lens (386) has a lower protective lens (387) on its lower side and the lower protective lens (387) is fixedly connected to the ceramic ring (374).

7. The laser cutting device for engine metal tubing according to claim 1, characterized in that, The output end of the first motor (62) is fixedly connected to the input end of the reducer (63), and the output end of the reducer (63) is fixedly connected to a connecting plate (64), and a rotating plate (69) is fixedly connected to one side of the connecting plate (64).

8. The laser cutting device for engine metal tubing according to claim 7, characterized in that, The rotating plate (69) has a slot (692) on one side and a sliding groove (691) inside. A positioning slider (67) is slidably connected inside the sliding groove (691), and a positioning groove is provided on the upper side of the positioning slider (67).

9. The laser cutting device for engine metal tubing according to claim 8, characterized in that, A second motor (68) is fixedly connected to the upper side of the rotating plate (69), and a rotating shaft is fixedly connected to the output end of the second motor (68). A positioning plate (65) is fixedly connected to the upper side of the rotating plate (69).

10. The laser cutting device for engine metal tubing according to claim 9, characterized in that, The other end of the rotating shaft is connected to the bearing of the positioning plate (65). Two connecting shafts (66) are fixedly connected to the outside of the rotating shaft, and a locking pin (661) is fixedly connected to one side of each connecting shaft (66).

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