A positioning type welding device based on tool machining

Abstract

The present application belongs to the technical field of tool manufacturing and welding tooling, especially to a positioning type welding device based on tool machining. In view of the blade deviation caused by welding thermal expansion, the rigid structure has no follow-up compensation, and the curved surface is difficult to center, the following scheme is proposed, which comprises: a welding tooling table, a control table is arranged on one side of the welding tooling table, and a monitor is arranged above the welding tooling table; a thermal follow-up centering module is arranged above the welding tooling table. The positioning type welding device based on tool machining has self-adaptive lifting columns, universal high-temperature positioning seats and multiple elastic extension structures, which solves the problem of blade deviation caused by welding thermal expansion and realizes dynamic follow-up compensation in the vertical and horizontal directions. At the same time, relying on the arc-shaped self-adaptive sliding block and the floating high-temperature gasket, the curved surface and the special-shaped blade are formed to be profiled and attached and flexibly clamped, which significantly improves the centering accuracy and the device versatility, and guarantees the effects of weld symmetry and finished product size stability.

Description

Technical Field

[0001] This invention relates to the field of cutting tool manufacturing and welding fixture technology, and in particular to a positioning welding device based on cutting tool machining. Background Technology

[0002] In knife manufacturing, it is often necessary to weld two separate blades made of different materials together to achieve a balance between the wear resistance of the cutting edge and the toughness of the blade body. Due to the significant differences in the special physical properties of the two materials, thermal stress and deformation are easily generated during the welding process, making the relative positioning accuracy before welding particularly critical. With the intelligent development of metal cutting and welding equipment manufacturing fields such as plasma arc welding machines, the intelligent manufacturing equipment industry is constantly growing. Advanced equipment such as intelligent casting islands, intelligent welding systems, and intelligent heat treatment production lines have been gradually applied to the production process. Commonly used welding methods include high-frequency induction welding, argon arc welding, laser welding, and resistance welding. However, regardless of the welding process or intelligent equipment used, the relative positioning accuracy of the two blades before welding always directly determines the symmetry of the cutting edge, the strength of the weld, and the dimensional consistency of the finished product.

[0003] In existing tool manufacturing processes, split inserts typically rely on traditional mechanical fixtures before welding. However, during welding, high temperatures cause thermal expansion of the insert material, leading to displacement of the pre-positioned insert. Existing devices are mostly rigid positioning structures, which cannot compensate for temperature changes in the heat-affected zone during welding. This results in weld misalignment, reduced cutting edge symmetry, and severely affects the dimensional accuracy of the finished product. Furthermore, the wide variety of tool types makes it difficult to stably and evenly clamp and automatically center curved inserts, easily causing poor local contact or positioning instability, thus limiting the versatility of welding devices. Summary of the Invention

[0004] This invention discloses a positioning welding device based on tool processing, which aims to solve the technical problems in the background art of tool displacement caused by welding thermal expansion, lack of follow-up compensation for rigid structures, and difficulty in centering curved surfaces.

[0005] The present invention proposes a positioning welding device based on tool machining, comprising: A welding fixture table, with a control console located on one side of the welding fixture table, and a monitor installed above the welding fixture table; A thermal follow-up centering module is set above the welding fixture table. The thermal follow-up centering module includes two fixture supports. Each of the two fixture supports has an installation round opening on one side. An angle rotating column is connected to the inside of each of the two installation round openings through a bearing. The same welding support frame is fixedly connected to the opposite end of the two angle rotating columns. An adjustment module is located above the welding fixture table, and the adjustment module includes two support rods.

[0006] In a preferred embodiment, the thermal follow-up centering module further includes: An arc-shaped angle gauge is fixedly connected to one side of one of the tooling supports. A pointer is fixedly connected to the outside of one of the angle rotating columns. A visual monitor is installed on the side of the welding support frame facing the arc-shaped angle gauge. Two limiting lifting cylinders are symmetrically slidably connected to one side of the welded support frame, and one end of the two limiting lifting cylinders is fixedly connected to the same lifting positioning plate. Multiple adaptive lifting columns are equidistantly slidably connected to one side of the lifting positioning plate, and the adaptive lifting columns and the opposite side of the lifting positioning plate are fixedly connected to the same limit spring.

[0007] In a preferred embodiment, the thermal follow-up centering module further includes: Multiple cross plates are fixedly connected to one end of multiple adaptive lifting columns. One end of the adaptive lifting column is provided with a slot, and a universal high-temperature positioning seat is movably connected inside the slot. One side of the cross plate is provided with a return spring in a ring at equal intervals, and one side of the return spring is fixedly connected to the side of the universal high-temperature positioning seat. Two electric telescopic cylinders are symmetrically arranged at the bottom of the welded support frame, and the drive end of the electric telescopic cylinder is fixedly connected to one side of the lifting and positioning plate.

[0008] In a preferred embodiment, the thermal follow-up centering module further includes: Two positioning slide rods are slidably set on the side of the welding support frame. One end of each positioning slide rod is provided with a limit block 2. One side of each limit block 2 is provided with a slide groove 1. An arc-shaped adaptive slider 1 is slidably connected inside each slide groove 1. A high-temperature gasket 1 is provided on one side of each arc-shaped adaptive slider 1. A telescopic spring 2 is fixedly connected to one side of each limit block 2. One side of the telescopic spring 2 is fixedly connected to one side of the welding support frame. Two guide rails are symmetrically arranged at the bottom of the welding support frame. Two lead screw sliders are slidably connected inside each guide rail. The same linkage rod is fixedly connected to one side of each of the two lead screw sliders on the same side. Two L push rods are fixedly connected to one side of each linkage rod.

[0009] In a preferred embodiment, the thermal follow-up centering module further includes: Two centering moving rods are set on one side of the L push rod. Each of the two centering moving rods has a smooth opening at equal distances on one side. Each of the multiple smooth openings has an adaptive smooth rod slidably connected inside. Each of the multiple adaptive smooth rods has a limit block one at one end. Each of the multiple limit blocks one has a groove two on one side. Each of the multiple grooves two has an arc-shaped adaptive slider two slidably connected inside. Multiple high-temperature pads are fixedly connected to one side of multiple arc-shaped adaptive sliders. One side of each of the multiple limit blocks is fixedly connected to a telescopic spring. One side of the telescopic spring is fixedly connected to one side of the centering moving rod.

[0010] In a preferred embodiment, the adjustment module further includes: A transverse linear mechanism is located on one side of two support rods, and a slide block is slidably connected to the outside of the transverse linear mechanism; A vertical linear mechanism is mounted on slide one. Slide two is slidably connected to the outside of the vertical linear mechanism, and a crossbar is fixedly connected to one side of slide two.

[0011] In a preferred embodiment, the adjustment module further includes: A rotating round rod is connected to a crossbar via a bearing, and a U-shaped tooling frame is fixedly connected to one end of the rotating round rod; Two rotating shafts are connected to the two sides of the U-shaped tooling frame via bearings. The same placement frame is set at the opposite end of the two rotating shafts, and the laser welding gun body is installed inside the placement frame.

[0012] In a preferred embodiment, the adjustment module further includes: A drive motor is located on one side of the crossbar, and the drive end of the drive motor is connected to the other end of the rotating round bar via a coupling. A follower rod is fixedly connected to the outside of one of the rotating shafts, and a visual monitor is installed on one side of the follower rod; The servo motor is located on one side of the U-shaped tooling frame, and the drive end of the servo motor is connected to one end of one of the rotating shafts via a coupling.

[0013] In a preferred embodiment, it also includes: Two lead screw motors are respectively set on one side of two guide rails. Both sides of the two guide rails are provided with mounting holes. The two opposite mounting holes are connected to the same bidirectional lead screw through bearings.

[0014] In a preferred embodiment, it also includes: A general-purpose motor is installed inside one of the tooling supports, and the drive end of the general-purpose motor is connected to one end of one of the angle rotating columns via a coupling.

[0015] As can be seen from the above, the positioning welding device based on tool processing provided by the present invention solves the problem of blade offset caused by welding thermal expansion through adaptive lifting column, universal high-temperature positioning seat and multiple sets of elastic telescopic structures, and realizes dynamic follow-up compensation in the vertical and horizontal directions; at the same time, relying on arc-shaped adaptive slider and floating high-temperature pad, it forms a conformal fit and flexible clamping for curved surface and irregular blade, which significantly improves the centering accuracy and device versatility, and ensures the beneficial effects of weld symmetry and finished product dimensional stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a positioning welding device based on tool processing proposed in this invention; Figure 2 This is a side view of a positioning welding device based on tool processing proposed in this invention. Figure 3 This is a schematic diagram of the welding fixture section of a positioning welding device based on tool processing proposed in this invention. Figure 4 for Figure 3 A magnified structural diagram of part A; Figure 5 This is a schematic diagram of the thermal follow-up centering module structure of a positioning welding device based on tool processing proposed in this invention; Figure 6 This is a schematic diagram of the thermal follow-up centering module of a positioning welding device based on tool processing proposed in this invention. Figure 7 for Figure 6 A schematic diagram of the enlarged structure of part B; Figure 8 for Figure 6 A schematic diagram of the enlarged structure of part C; Figure 9 This is a schematic diagram of the adjustment module structure of a positioning welding device based on tool processing proposed in this invention; Figure 10 This is a schematic diagram of the adjustment module of a positioning welding device based on tool processing proposed in this invention.

[0017] In the diagram: 1. Welding fixture table; 2. Control console; 3. Thermal follow-up centering module; 301. Fixture support platform; 302. Angle rotation column; 303. Welding support frame; 304. Arc-shaped angle ruler; 305. Pointer; 306. High-temperature gasket one; 307. Limit lifting cylinder; 308. Lifting positioning plate; 309. Electric telescopic cylinder; 310. Guide rail; 311. Arc-shaped adaptive slider one; 312. Lead screw slider; 313. Positioning slide rod; 314. Centering moving rod; 315. Adaptive slide rod; 316. Limit block one; 317. Arc-shaped adaptive slider two; 318. High-temperature gasket two; 319. Telescopic spring one; 320. Adaptive lifting column; 321. Telescopic spring two; 322. Limiting spring; 323. Universal high-temperature positioning seat; 324. Cross plate; 325. Return spring; 326. Limiting block two; 4. Monitor; 5. Adjustment module; 501. Support rod; 502. Horizontal linear mechanism; 503. Slide one; 504. Vertical linear mechanism; 505. Slide two; 506. Crossbar; 507. Rotating round rod; 508. Drive motor; 509. U-shaped tooling frame; 510. Rotating shaft; 511. Placement frame; 512. Servo motor; 513. Follower rod; 514. Vision monitor one; 6. General motor; 7. Lead screw motor; 8. Linkage rod; 9. L-shaped push rod; 10. Bidirectional lead screw; 11. Vision monitor two; 12. Laser welding gun body. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The positioning welding device based on tool processing disclosed in this invention is mainly used in scenarios where welding thermal expansion causes the cutting tool to shift, rigid structures have no follow-up compensation, and curved surfaces are difficult to align.

[0020] Reference Figures 1-10 A positioning welding device based on tool machining, comprising: Welding fixture 1 and control console 2 are located on one side of welding fixture 1, and monitor 4 is installed above welding fixture 1. The thermal follow-up centering module 3 is set above the welding fixture table 1. The thermal follow-up centering module 3 includes two fixture supports 301. Each of the two fixture supports 301 has an installation round opening on one side. An angle rotating column 302 is connected to the inside of each of the two installation round openings through a bearing. The same welding support frame 303 is fixedly connected to the opposite end of the two angle rotating columns 302. Adjustment module 5 is located above welding fixture 1. Adjustment module 5 includes two support rods 501.

[0021] Reference Figures 1-8 In a preferred embodiment, the thermal follower centering module 3 further includes: An arc-shaped angle ruler 304 is fixedly connected to one side of one of the tooling supports 301. A pointer 305 is fixedly connected to the outside of one of the angle rotating columns 302. A visual monitor 11 is provided on the side of the welding support frame 303 facing the arc-shaped angle ruler 304. Two limiting lifting cylinders 307 are symmetrically slidably connected to one side of the welded support frame 303, and one end of the two limiting lifting cylinders 307 is fixedly connected to the same lifting positioning plate 308. Multiple adaptive lifting columns 320 are equidistantly slidably connected to one side of the lifting positioning plate 308, and the adaptive lifting columns 320 and the opposite side of the lifting positioning plate 308 are fixedly connected to the same limiting spring 322.

[0022] Reference Figures 1-8 In a preferred embodiment, the thermal follower centering module 3 further includes: Multiple cross plates 324 are fixedly connected to one end of multiple adaptive lifting columns 320 respectively. One end of the adaptive lifting column 320 is provided with a slot, and a universal high-temperature positioning seat 323 is movably connected inside the slot. A return spring 325 is provided in a ring at equal intervals on one side of the cross plate 324. One side of the return spring 325 is fixedly connected to the side of the universal high-temperature positioning seat 323. Two electric telescopic cylinders 309 are symmetrically arranged at the bottom of the welded support frame 303, and the drive end of the electric telescopic cylinder 309 is fixedly connected to one side of the lifting positioning plate 308.

[0023] Reference Figures 1-8 In a preferred embodiment, the thermal follower centering module 3 further includes: Two positioning slide rods 313 are slidably disposed on the side of the welding support frame 303. One end of each positioning slide rod 313 is provided with a limit block 326. One side of each limit block 326 is provided with a groove. An arc-shaped adaptive slider 311 is slidably connected inside each groove. A high-temperature pad 306 is provided on one side of each arc-shaped adaptive slider 311. A telescopic spring 321 is fixedly connected to one side of each limit block 326. One side of the telescopic spring 321 is fixedly connected to one side of the welding support frame 303. Two guide rails 310 are symmetrically arranged at the bottom of the welding support frame 303. Two lead screw sliders 312 are slidably connected inside each of the two guide rails 310. The same linkage rod 8 is fixedly connected to one side of the two lead screw sliders 312 located on the same side. Two L push rods 9 are fixedly connected to one side of the two linkage rods 8.

[0024] Reference Figures 1-8In a preferred embodiment, the thermal follower centering module 3 further includes: Two centering moving rods 314 are set on one side of the L push rod 9. Each of the two centering moving rods 314 has a rounded opening at equal distances on one side. Each of the rounded openings is slidably connected to an adaptive rounded rod 315. Each of the adaptive rounded rods 315 has a limit block 316 at one end. Each of the limit blocks 316 has a groove 2 on one side. Each of the groove 2 has an arc-shaped adaptive slider 317 slidably connected to its interior. Multiple high-temperature gaskets 318 are fixedly connected to one side of multiple arc-shaped adaptive sliders 317 respectively. One side of each of the multiple limit blocks 316 is fixedly connected to a telescopic spring 319. One side of the telescopic spring 319 is fixedly connected to one side of the centering moving rod 314.

[0025] Specifically, when the operator places the two separate blades on the left and right sides of the welding support frame 303, one side of the blade will first contact the high-temperature pad 306 located on the side of the welding support frame 303. Since the high-temperature pad 306 is fixed on the arc-shaped adaptive slider 311, and the arc-shaped adaptive slider 311 can slide along the groove of the limiting block 326, and the limiting block 326 is connected to the welding support frame 303 through the positioning slide rod 313 and the telescopic spring 321, this side forms a floating reference surface. When the side of the blade is arc-shaped, inclined, or irregular, the blade will push the high-temperature pad 306 and the arc-shaped adaptive slider 311 to slide slightly along the groove, while the telescopic spring 321 is compressed, causing the high-temperature pad 306 to contact the high-temperature adaptive slider 311 to slide slightly along the groove. The temperature-controlled gasket 306 automatically adjusts its angle and position to maintain stable surface contact with the side of the blade, avoiding localized point contact caused by a rigid reference surface. Then, two electric telescopic cylinders 309 simultaneously drive the lifting positioning plate 308 to descend. The lifting positioning plate 308 maintains stable vertical movement through two limiting lifting cylinders 307. Multiple adaptive lifting columns 320 are evenly distributed on the lifting positioning plate 308. Each adaptive lifting column 320 is equipped with a limit spring 322 between itself and the lifting positioning plate 308. When the lifting positioning plate 308 descends, the universal high-temperature positioning seat 323 first contacts the non-cutting edge area of ​​the blade. Since each adaptive lifting column 320 slides independently, when encountering curved or uneven blade surfaces, part of the universal high-temperature positioning seat... The high-temperature positioning seat 323 is lifted upwards, and the corresponding limiting spring 322 is compressed. Meanwhile, the universal high-temperature positioning seats 323 in other areas that are not in contact or have low contact continue to descend. At the same time, the universal high-temperature positioning seats 323 are connected to the cross plate 324 and the annularly arranged return spring 325 through the slot, allowing them to swing universally within a certain angle, thereby perfectly conforming to the curved surface contour of the blade and achieving stable and uniform pre-tightening, avoiding poor local contact. While the vertical pre-tightening is in progress, the lateral centering mechanism is activated. The two lead screw motors 7 drive the bidirectional lead screws 10 inside the two guide rails 310 to rotate. The bidirectional lead screws 10 drive the lead screw sliders 312 on both sides to move synchronously towards the center. The lead screw sliders 312 drive the linkage rod 8 and the L push rod 9, thereby pushing the centering mechanism. The centering moving rod 314 moves towards the side of the blade. Multiple adaptive sliding rods 315 are slidably connected to each centering moving rod 314 via a smooth opening. Each adaptive sliding rod 315 has a limit block 316 and an arc-shaped adaptive slider 317 at its end. When the centering moving rod 314 advances, the high-temperature pad 318 first contacts the side of the blade. If the side of the blade is arc-shaped or irregular, some of the adaptive sliding rods 315 will slide backward relative to the centering moving rod 314, compressing the corresponding telescopic spring 319, while the uncontacted area continues to extend forward, thus forming a contour-following clamp for the irregular side. When the laser welding gun body 12 begins welding, the high-temperature heat-affected zone causes thermal expansion of the blade material. At this time, the thermal follow-up centering of this device begins operation.Vertical follow-up: Due to thermal expansion, the thickness of the blade in the welding area increases slightly. At this time, the universal high-temperature positioning seat 323, in contact with this area, overcomes the elastic force of the limiting spring 322 and automatically retracts upwards. Simultaneously, the return spring 325 allows the universal high-temperature positioning seat 323 to deflect slightly, thus dynamically absorbing thermal expansion displacement and preventing blade deformation or excessive internal stress caused by rigid clamping. After welding, as the temperature drops, the limiting spring 322 and the return spring 325 push the universal high-temperature positioning seat 323 back to its original position, maintaining a continuous and stable clamping force. Horizontal follow-up: The thermal expansion of the blade in the planar direction is also absorbed by the elastic system composed of the adaptive slide rod 315 and the first telescopic spring 319. When the blade elongates due to heat, it pushes the second arc-shaped adaptive slider 317 and the adaptive slide rod 315 to slide slightly backwards. The first telescopic spring 319 is further compressed, providing space for thermal expansion while maintaining a constant lateral centering thrust, ensuring that the weld is always in the preset butt joint position and will not shift or misalign due to expansion. In specific application scenarios, by setting up a vertical follow-up system consisting of an adaptive lifting column 320, a limit spring 322, and a universal high-temperature positioning seat 323, and a horizontal follow-up system consisting of an adaptive circular slide bar 315, a telescopic spring 319, and an arc-shaped adaptive slider 317, the device can passively absorb the thermal expansion displacement of the cutting tool in all directions under the action of high welding temperature. This avoids the problems of cutting tool extrusion deformation, weld seam offset, or loss of cutting edge symmetry caused by traditional rigid fixtures. It is especially suitable for batch welding of high-precision cutting tools. Through the independently floating and universally swingable universal high-temperature positioning seat 323 and the independently telescopic arc-shaped adaptive slider 317, this device can automatically conform to the cutting tool contour of any curved surface, stepped surface, or irregular side, and achieve contour clamping and centering. It can be compatible with multiple cutting tool models without changing the fixture, solving the problem of poor versatility of traditional devices that require one clamp per location and one fixture per type, and greatly reducing tooling costs and changeover time.

[0026] Reference Figure 1 , Figure 9 and Figure 10 In a preferred embodiment, the adjustment module 5 further includes: A transverse linear mechanism 502 is disposed on one side of two support rods 501, and a slide block 503 is slidably connected to the outside of the transverse linear mechanism 502. A vertical linear mechanism 504 is mounted on a slide block 503. A slide block 505 is slidably connected to the outside of the vertical linear mechanism 504. A crossbar 506 is fixedly connected to one side of the slide block 505.

[0027] Reference Figure 1 , Figure 9 and Figure 10 In a preferred embodiment, the adjustment module 5 further includes: A rotating round rod 507 is connected to a cross rod 506 via a bearing, and a U-shaped tooling frame 509 is fixedly connected to one end of the rotating round rod 507. Two rotating shafts 510 are respectively connected to the two sides of the U-shaped tooling frame 509 by bearings. The same placement frame 511 is provided at the opposite end of the two rotating shafts 510. The laser welding gun body 12 is installed inside the placement frame 511.

[0028] Reference Figure 1 , Figure 9 and Figure 10 In a preferred embodiment, the adjustment module 5 further includes: A drive motor 508 is located on one side of the crossbar 506, and the drive end of the drive motor 508 is connected to the other end of the rotating round bar 507 via a coupling. Follower rod 513 is fixedly connected to the outside of one of the rotating shafts 510, and a visual monitor 514 is provided on one side of follower rod 513; Servo motor 512 is located on one side of U-shaped tooling frame 509. The drive end of servo motor 512 is connected to one end of one of the rotating shafts 510 via a coupling.

[0029] Specifically, the adjustment module 5 provides multiple degrees of freedom of movement, including lateral and vertical movement. The lateral linear mechanism 502 drives the slide 1 503 to move the entire welding gun structure laterally, while the vertical linear mechanism 504 drives the slide 2 505 to move the crossbar 506 up and down, thus coarsely adjusting the planar position of the laser welding gun body 12. For rotation and pitch adjustment, the drive motor 508 drives the rotating rod 507 to rotate, causing the U-shaped tooling frame 509 to rotate around a horizontal axis, achieving tilt adjustment of the welding angle. The servo motor 512 drives one of the rotating axes 510 to rotate, causing the placement frame 511 and the laser welding gun body 12 inside to rotate around another horizontal axis, achieving fine adjustment of the pitch or yaw angle. The vision monitor 51... 4. The welding gun angle changes synchronously with the follower rod 513, and the relative position of the welding gun and the weld is monitored in real time. During the welding process, the second vision monitor 11 continuously monitors the angle position of the welding support frame 303 relative to the arc angle ruler 304, and reads the actual deflection angle through the pointer 305 and feeds it back to the control console 2. At the same time, the first vision monitor 514 captures the weld image in real time. Based on the data from the two vision monitors, the control console 2 dynamically adjusts the movement of each axis of the adjustment module 5 and the angle rotation column 302 driven by the general motor 6, so that the welding support frame 303 can follow the welding trajectory and change its tilt angle. This ensures that the laser welding gun body 12 is always aligned with the weld at the optimal angle and the best focal length, and achieves precision welding under closed-loop control.

[0030] Reference Figures 1-6In a preferred embodiment, it further includes: Two lead screw motors 7 are respectively set on one side of two guide rails 310. Both sides of the two guide rails 310 are provided with mounting holes, and the two opposite mounting holes are connected to the same bidirectional lead screw 10 through bearings.

[0031] Reference Figures 1-6 In a preferred embodiment, it further includes: A general-purpose motor 6 is installed inside one of the tooling supports 301. The drive end of the general-purpose motor 6 is connected to one end of one of the angle rotating columns 302 via a coupling.

[0032] Working Principle: During use, when the operator places the two separate blades on the left and right sides of the welding support frame 303 respectively, one side of the blade will first contact the high-temperature pad 306 located on the side of the welding support frame 303. Since the high-temperature pad 306 is fixed on the arc-shaped adaptive slider 311, and the arc-shaped adaptive slider 311 can slide along the groove of the limiting block 326, and the limiting block 326 is connected to the welding support frame 303 through the positioning slide rod 313 and the extension spring 321, this side forms a floating reference surface. When the side of the blade is arc-shaped, inclined, or irregularly shaped, the blade will push the high-temperature pad 306 and the arc-shaped adaptive slider 311 to slide slightly along the groove, while the extension spring 321... 1. The high-temperature gasket 306 is compressed, causing it to automatically adjust its angle and position, maintaining stable surface contact with the side of the blade, thus avoiding localized point contact caused by a rigid reference surface. Then, two electric telescopic cylinders 309 simultaneously drive the lifting positioning plate 308 to descend. The lifting positioning plate 308 maintains stable vertical movement through two limiting lifting cylinders 307. Multiple adaptive lifting columns 320 are evenly distributed on the lifting positioning plate 308, each with a limit spring 322 between it and the lifting positioning plate 308. When the lifting positioning plate 308 descends, the universal high-temperature positioning seat 323 first contacts the non-cutting edge area of ​​the blade. Since each adaptive lifting column 320 slides independently, when encountering a curved blade or an uneven surface... When the blade is being pressed, some of the universal high-temperature positioning seats 323 are pushed upwards, and the corresponding limit springs 322 are compressed. Meanwhile, the universal high-temperature positioning seats 323 in other areas that are not in contact or have low contact continue to descend. At the same time, the universal high-temperature positioning seats 323 are connected to the cross plate 324 and the annularly arranged return springs 325 through the slots, allowing them to swing universally within a certain angle, thereby perfectly conforming to the curved contour of the blade and achieving stable and uniform pre-compression, avoiding poor local contact. While the blade is being pre-compressed vertically, the lateral centering mechanism is activated. The two lead screw motors 7 drive the bidirectional lead screws 10 inside the two guide rails 310 to rotate. The bidirectional lead screws 10 drive the lead screw sliders 312 on both sides to move synchronously towards the center. The lead screw sliders 312 drive the linkage rod 8. And L push rod 9, which in turn pushes the centering moving rod 314 toward the side of the blade. Each centering moving rod 314 is slidably connected to multiple adaptive sliding rods 315 through a smooth opening. Each adaptive sliding rod 315 is provided with a limit block 316 and an arc-shaped adaptive slider 317 at its end. When the centering moving rod 314 is advanced, the high-temperature pad 318 first contacts the side of the blade. If the side of the blade is arc-shaped or irregular, some of the adaptive sliding rods 315 will slide backward relative to the centering moving rod 314, compressing the corresponding telescopic spring 319, while the uncontacted area continues to extend forward, thus forming a contour clamping of the irregular side. When the laser welding gun body 12 starts welding, the high-temperature heat-affected zone will cause the blade material to thermally expand. At this time,The device begins operation with thermal follow-up alignment. In the vertical direction, the blade in the welding area expands slightly due to heat, increasing its thickness. At this time, the universal high-temperature positioning seat 323, in contact with this area, overcomes the elastic force of the limiting spring 322 and automatically retracts upwards. Simultaneously, the return spring 325 allows the universal high-temperature positioning seat 323 to deflect slightly, thus dynamically absorbing thermal expansion displacement and preventing blade deformation or excessive internal stress caused by rigid clamping. After welding, as the temperature drops, the limiting spring 322 and the return spring 325 push the universal high-temperature positioning seat 323 back to its original position, maintaining a continuous and stable clamping force. In the horizontal direction, the blade... Thermal expansion in the planar direction is also absorbed by the elastic system composed of the adaptive slide bar 315 and the telescopic spring 319. When the blade elongates due to heat, it pushes the arc-shaped adaptive slider 317 and the adaptive slide bar 315 to slide slightly backward, and the telescopic spring 319 is further compressed, thus providing space for thermal expansion while maintaining a constant lateral centering thrust to ensure that the weld is always in the preset mating position and will not shift or misalign due to expansion. The adjustment module 5 provides multiple degrees of freedom of movement, including lateral and vertical movement. The lateral linear mechanism 502 drives the slide block 503 to move the entire welding gun structure laterally, and the vertical movement... The linear mechanism 504 drives the slide block 505 to move the crossbar 506 up and down, thereby coarsely adjusting the planar position of the laser welding gun body 12. For rotation and pitch adjustment, the drive motor 508 drives the rotating rod 507 to rotate, causing the U-shaped tooling frame 509 to rotate around the horizontal axis, realizing the tilt adjustment of the welding angle. The servo motor 512 drives one of the rotating axes 510 to rotate, causing the placement frame 511 and the laser welding gun body 12 inside to rotate around the other horizontal axis, realizing the fine adjustment of the pitch or yaw angle. The vision monitor 514 synchronously follows the angle change of the welding gun through the follower rod 513, and monitors the relative position of the welding gun and the weld in real time. During the welding process, vision monitor 2 11 continuously monitors the angular position of the welding support frame 303 relative to the arc-shaped angle ruler 304, and reads the actual deflection angle through pointer 305, feeding it back to control console 2. Simultaneously, vision monitor 1 514 captures the weld seam image in real time. Based on the data from the two vision monitors, control console 2 dynamically adjusts the movement of each axis of adjustment module 5 and the angle rotation column 302 driven by the general-purpose motor 6, ensuring that the welding support frame 303 can follow the welding trajectory and change its tilt angle. This ensures that the laser welding gun body 12 is always aligned with the weld seam at the optimal angle and focal length, achieving precision welding under closed-loop control.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A positioning welding device based on tool machining, characterized in that, include: A welding fixture (1) and a control console (2) are located on one side of the welding fixture (1), and a monitor (4) is located above the welding fixture (1). The thermal follow-up centering module (3) is set above the welding fixture table (1). The thermal follow-up centering module (3) includes two fixture supports (301). Each of the two fixture supports (301) has an installation round opening on one side. An angle rotating column (302) is connected to the inside of each of the two installation round openings through a bearing. The same welding support frame (303) is fixedly connected to the opposite end of the two angle rotating columns (302). An adjustment module (5) is set above the welding fixture table (1), and the adjustment module (5) includes two support rods (501).

2. The positioning welding device based on tool machining according to claim 1, characterized in that, The thermal follow-up centering module (3) also includes: An arc-shaped angle ruler (304) is fixedly connected to one side of one of the tooling supports (301), and a pointer (305) is fixedly connected to the outside of one of the angle rotating columns (302). A visual monitor (11) is provided on the side of the welding support frame (303) facing the arc-shaped angle ruler (304). Two limiting lifting cylinders (307) are symmetrically slidably connected to one side of the welded support frame (303), and one end of the two limiting lifting cylinders (307) is fixedly connected to the same lifting positioning plate (308). Multiple adaptive lifting columns (320) are equidistantly slidably connected to one side of the lifting positioning plate (308), and the adaptive lifting columns (320) and the opposite side of the lifting positioning plate (308) are fixedly connected to the same limiting spring (322).

3. The positioning welding device based on tool machining according to claim 2, characterized in that, The thermal follow-up centering module (3) also includes: Multiple cross plates (324) are fixedly connected to one end of multiple adaptive lifting columns (320). One end of the adaptive lifting column (320) is provided with a slot, and a universal high-temperature positioning seat (323) is movably connected inside the slot. A return spring (325) is provided in a ring at equal intervals on one side of the cross plate (324). One side of the return spring (325) is fixedly connected to the side of the universal high-temperature positioning seat (323). Two electric telescopic cylinders (309) are symmetrically arranged at the bottom of the welded support frame (303), and the drive end of the electric telescopic cylinder (309) is fixedly connected to one side of the lifting positioning plate (308).

4. The positioning welding device based on tool machining according to claim 3, characterized in that, The thermal follow-up centering module (3) also includes: Two positioning slide rods (313) are slidably set on the side of the welding support frame (303). One end of each of the two positioning slide rods (313) is provided with a limit block two (326). One side of each of the two limit blocks two (326) is provided with a slide groove one. An arc-shaped adaptive slider one (311) is slidably connected inside each of the two slide grooves one. A high-temperature gasket one (306) is provided on one side of each of the two arc-shaped adaptive slider one (311). A telescopic spring two (321) is fixedly connected to one side of each of the two limit blocks two (326). One side of the telescopic spring two (321) is fixedly connected to one side of the welding support frame (303). Two guide rails (310) are symmetrically arranged at the bottom of the welding support frame (303). Two lead screw sliders (312) are slidably connected inside the two guide rails (310). The same linkage rod (8) is fixedly connected to one side of the two lead screw sliders (312) located on the same side. Two L push rods (9) are fixedly connected to one side of the two linkage rods (8).

5. A positioning welding device based on tool machining according to claim 4, characterized in that, The thermal follow-up centering module (3) also includes: Two centering moving rods (314) are set on one side of the L push rod (9). Smooth openings are provided at equal intervals on one side of the two centering moving rods (314). Adaptive sliding rods (315) are slidably connected inside the multiple smooth openings. Limiting block 1 (316) is provided at one end of the multiple adaptive sliding rods (315). Sliding groove 2 is provided on one side of the multiple limiting block 1 (316). Arc-shaped adaptive slider 2 (317) is slidably connected inside the multiple sliding groove 2. Multiple high-temperature pads (318) are fixedly connected to one side of multiple arc-shaped adaptive sliders (317), and one side of multiple limit blocks (316) is fixedly connected to a telescopic spring (319). One side of the telescopic spring (319) is fixedly connected to one side of the centering moving rod (314).

6. The positioning welding device based on tool machining according to claim 1, characterized in that, The adjustment module (5) also includes: A transverse linear mechanism (502) is located on one side of two support rods (501), and a slide block (503) is slidably connected to the outside of the transverse linear mechanism (502). A vertical linear mechanism (504) is mounted on a slide block (503). A slide block (505) is slidably connected to the outside of the vertical linear mechanism (504). A crossbar (506) is fixedly connected to one side of the slide block (505).

7. A positioning welding device based on tool machining according to claim 6, characterized in that, The adjustment module (5) also includes: A rotating round rod (507) is connected to a cross rod (506) via a bearing, and a U-shaped tooling frame (509) is fixedly connected to one end of the rotating round rod (507). Two rotating shafts (510) are connected to the two sides of the U-shaped tooling frame (509) by bearings respectively. The same placement frame (511) is provided at the opposite end of the two rotating shafts (510). The laser welding gun body (12) is installed inside the placement frame (511).

8. A positioning welding device based on tool machining according to claim 7, characterized in that, The adjustment module (5) also includes: A drive motor (508) is located on one side of the crossbar (506), and the drive end of the drive motor (508) is connected to the other end of the rotating round bar (507) via a coupling. Follower rod (513) is fixedly connected to the outside of one of the rotating shafts (510), and a visual monitor (514) is provided on one side of follower rod (513). A servo motor (512) is located on one side of the U-shaped tooling frame (509), and the drive end of the servo motor (512) is connected to one end of one of the rotating shafts (510) via a coupling.

9. A positioning welding device based on tool machining according to claim 5, characterized in that, Also includes: Two lead screw motors (7) are respectively set on one side of two guide rails (310). The two guide rails (310) have mounting holes on both sides. The two opposite mounting holes are connected to the same bidirectional lead screw (10) through bearings.

10. A positioning welding device based on tool machining according to claim 9, characterized in that, Also includes: A general-purpose motor (6) is installed inside one of the tooling supports (301), and the drive end of the general-purpose motor (6) is connected to one end of one of the angle rotating columns (302) via a coupling.

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