Intelligent arc welding fixture and welding method

Abstract

The invention relates to the technical field of automobile welding fixtures, and discloses an intelligent arc welding fixture and a welding method.The intelligent arc welding fixture comprises a welding platform and a plurality of supporting pieces used for bearing pieces to be welded, the welding platform is further provided with two sets of assembling plates in reverse synchronous transmission, and a fixture module is fixed to the two assembling plates; the multiple clamp modules are installed on the assembling plate in a non-uniform mode. According to the intelligent arc welding fixture, the modular design is adopted, the clamping depth, the clamping height, the clamping direction and the clamping angle of the fixture can be adjusted according to a workpiece with a complex curved surface or large size difference, and particularly, the fixture can be adaptively adjusted, the fixture module does not need to be frequently replaced and the machining efficiency is improved during multi-model mixed-line production of a vehicle body.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive welding jigs, and in particular to an intelligent arc welding jig and a welding method. Background Art

[0002] Traditional automotive arc welding jigs mostly adopt a rigid frame structure. By cooperating with a pneumatic / hydraulic clamping mechanism and positioning pins, the body sheet metal parts are fixed at a preset station to ensure the position stability of the workpiece during the welding process.

[0003] Currently, such jigs rely on mechanical positioning and manual experience debugging. However, due to the fixed design, it is difficult to adapt to workpieces with complex curved surfaces or large size differences, and it is necessary to frequently replace the jig modules. For example, during the mixed-line production of multiple models of automobile bodies, for the fixing requirements of different positions of the automobile body, it is necessary to stop the machine to adjust different jigs, including the angle, strength, and acting force of the clamping position of the jig, which affects the efficiency; At the same time, for the problems of mechanical wear at the clamping contact points leading to a decrease in repeat positioning accuracy and local thermal deformation causing local deformation of the jig, it is easy to cause the offset of the workpiece and affect the welding effect. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent arc welding jig and a welding method, aiming to solve the problems in the prior art.

[0005] The present invention is realized as follows. An intelligent arc welding jig includes a welding platform and a plurality of support members for carrying the workpiece to be welded. Two sets of reversely synchronously driven assembly plates are further arranged on the welding platform. A plurality of jig modules are fixed on the two assembly plates, and the number of the jig modules is multiple and they are unevenly installed above the assembly plates; The jig module is detachably slidably connected to the assembly plate through an adjusting seat. The adjusting seat is movably installed with a rotating seat along the E, D, and F directions. An upper clamping piece is movably installed on the rotating seat along the H direction, and the rotating seat can also be movably installed with a lower clamping piece along the D, G, and H directions; The clamping surface of the upper clamping piece is detachably installed with a pressing member. A pressing rod is telescopically arranged on the pressing member along the clamping direction, and the end of the pressing rod acts on the surface of the workpiece through the pushing action of medium pressure.

[0006] Preferably, two sets of parallel guide rails are arranged on the welding platform. The two ends of the two assembly plates are respectively slidably installed at the two ends of the two guide rails; A substrate is arranged on the surface of the welding platform. A plurality of threaded holes are evenly distributed and opened above the substrate, and the support members are fixed on the substrate through the threaded holes.

[0007] Preferably, the assembly plate is strip-shaped, a locking groove is formed on one side surface of the assembly plate, an assembly seat is installed through the locking groove of the assembly plate, and the adjusting seat is bolt-fixed through the assembly seat; A guide piece is arranged on the upper surface of the assembly plate, and an electric contact corresponding to the guide piece is arranged at the bottom of the assembly seat.

[0008] Preferably, a guide rod is installed inside the adjusting seat, and a guide seat sliding on the adjusting seat is sleeved outside the guide rod; An elevating telescopic machine is installed above the guide seat, and a first steering mechanism is installed inside the bottom of the rotating seat. The first steering mechanism includes a first motor and a first electromagnetic lock, and an output shaft of the first motor is connected to the telescopic end of the elevating telescopic machine.

[0009] Preferably, a buffer adjusting motor is installed at one end of the adjusting seat facing away from the clamping direction. An output shaft of the buffer adjusting motor is connected to an adjusting rod arranged parallel to the guide rod, and a telescopic rod is threadedly connected to the outside of the adjusting rod; An end of the telescopic rod is connected to a pressing block sleeved outside the guide rod, and a buffer spring is also sleeved outside the guide rod. Two ends of the buffer spring respectively abut against the pressing block and the guide seat.

[0010] Preferably, a fixed support plate arranged in an inverted L shape is installed on one side of the rotating seat. The upper clamping piece is connected to the upper end of the fixed support plate through a rotating shaft, and an offset telescopic machine is connected between one end of the fixed support plate facing away from the upper clamping piece and the upper clamping piece through a rotating shaft.

[0011] Preferably, a lifting adjusting motor is installed inside the top of the rotating seat. An output shaft of the lifting adjusting motor is connected to a lead screw, a sliding nut is installed outside the lead screw, and an L-shaped movable support plate is fixed through the sliding nut; A second steering mechanism is installed inside the movable support plate. The second steering mechanism includes a second motor and a second electromagnetic lock, and an output shaft of the second motor is connected to one side of the rotating seat; A third steering mechanism is further installed at the lower end of the movable support plate. The third steering mechanism includes a third motor and a third electromagnetic lock, and an output shaft of the third motor is connected to a rotating shaft connecting part of the lower clamping piece.

[0012] Preferably, an air pressure chamber is partitioned inside the pressing member through a partition plate. An electromagnetic control valve is arranged on one side of the partition plate facing away from the air pressure chamber, and an air outlet of the electromagnetic control valve penetrates through the partition plate and extends into the air pressure chamber; A positioning rod is arranged at one end of the partition plate close to the pressing rod. An end of the positioning rod penetrates through and extends into the inside of the pressing rod, and a return spring abutting against the end of the positioning rod is further arranged inside the pressing rod. Electric signal contacts corresponding to each other are also arranged between the partition plate and the pressing rod.

[0013] An intelligent arc welding method, which is applied to the above-mentioned intelligent arc welding fixture, includes the following steps: Step 1: Install corresponding support parts on the welding platform according to the protruding support parts of the workpiece to be welded. After adjusting the distance between the two sets of assembly plates, place the workpiece to be welded on the support parts; Step 2: Fix corresponding fixture modules on the two sets of assembly plates according to the clamping parts of the workpiece to be welded, and adjust the distance between the two sets of assembly plates so that the fixture modules act on the edges of the workpiece to be welded; Step 3: Adjust the horizontal position of the adjusting seat along the E direction according to the depth of the clamping part of the workpiece to be welded, adjust the height of the rotating seat along the D direction according to the height of the clamping part of the workpiece to be welded, adjust the orientation of the rotating seat of the fixture module along the F direction according to the horizontal angle of the clamping part of the workpiece to be welded, and adjust the angles of the upper clamping piece and the lower clamping piece along the H direction according to the inclination degree of the clamping part of the workpiece to be welded; Step 4: Insert and fix corresponding pressing parts into the upper clamping piece according to the welding point positions of the clamping parts of the workpiece to be welded, inject high-pressure gas into the pressing parts to adjust the force of the pressing rod acting on the welding point positions of the workpiece to be welded, and adjust the height of the lower clamping piece to cooperate with the upper clamping piece to complete the clamping and fixing of each clamping part of the workpiece to be welded, so as to perform welding operations on each welding point.

[0014] The beneficial effects of the intelligent arc welding fixture and welding method disclosed by the present invention are as follows: 1. The intelligent arc welding fixture disclosed by the present invention is modularly designed, and can adjust the clamping depth, clamping height, clamping orientation and clamping angle of the fixture according to workpieces with complex curved surfaces or large size differences. Especially when multi-model mixed-line production of vehicle bodies is carried out, the fixture can be adaptively adjusted without frequently replacing fixture modules, improving processing efficiency; 2. The modular fixture disclosed by the present invention can insert pressing parts according to the welding points to be welded of the clamping parts, and can replace the pressing parts whose accuracy is reduced due to wear without replacing the whole fixture module. By injecting air pressure, the force of the pressing rod acting on the welding point position is adjusted to avoid the situation of station offset and improve the welding effect. Description of the Drawings

[0015] Figure 1 is a schematic diagram of an intelligent arc welding fixture provided by an embodiment of the present invention; Figure 2 is a schematic diagram of an assembly plate and a fixture module of an intelligent arc welding fixture provided by an embodiment of the present invention; Figure 3 is another perspective schematic diagram of a fixture module of an intelligent arc welding fixture provided by an embodiment of the present invention; Figure 4 is an intelligent arc welding fixture provided by an embodiment of the present inventionFigure 3 Schematic diagram of the cross-sectional structure along the arrow direction I-I; Figure 5 It is an intelligent arc welding fixture provided by an embodiment of the present invention Figure 4 Schematic diagram of the partial enlarged structure at A; Figure 6 It is an intelligent arc welding fixture provided by an embodiment of the present invention Figure 4 Schematic diagram of the partial enlarged structure at B; Figure 7 It is an intelligent arc welding fixture provided by an embodiment of the present invention Figure 4 Schematic diagram of the partial enlarged structure at C.

[0016] Marking description: 1. Welding platform; 2. Substrate; 3. Assembly plate; 4. Fixture module; 11. Guide rail; 21. Support member; 31. Assembly seat; 32. Guide piece; 33. Locking groove; 41. Adjusting seat; 42. Lifting telescopic machine; 43. Rotating seat; 44. Fixed support plate; 45. Upper clamping piece; 46. Movable support plate; 47. Lower clamping piece; 48. Pressing member; 411. Guide rod; 412. Guide seat; 413. Buffer spring; 414. Buffer adjusting motor; 415. Adjusting rod; 416. Expansion rod; 417. Pressing block; 431. First steering mechanism; 432. Lifting adjusting motor; 433. Lead screw; 434. Sliding nut; 311. Electric contact; 441. Offset telescopic machine; 461. Second steering mechanism; 462. Third steering mechanism; 481. Pressing rod; 482. Partition plate; 483. Electric control valve; 484. Pneumatic chamber; 485. Positioning rod; 486. Return spring; 497. Electric signal contact. Detailed implementation manners

[0017] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0020] The present invention aims to solve the problems of traditional arc welding fixtures that rely on mechanical positioning and manual experience debugging. However, due to the fixed design, it is difficult to adapt to workpieces with complex curved surfaces or large size differences, and it is necessary to frequently replace the fixture modules, which affects the efficiency. At the same time, for the problems of mechanical wear at the clamping contact points leading to a decrease in repeat positioning accuracy and local thermal deformation causing local deformation of the fixture, it is easy to cause the offset of the workpiece and affect the welding effect.

[0021] In this embodiment: Refer to Figure 1-2 As shown, a preferred embodiment is provided by the present invention.

[0022] The intelligent arc welding fixture of this embodiment includes a welding platform 1 and a plurality of support members 21 for carrying the workpiece to be welded. The support members 21 can be adaptively increased according to the support points of the protruding support parts of the welded part, and the support members 21 have the function of threaded lifting and can be adaptively adjusted according to the height of the protruding support part of the workpiece to be welded. Two sets of assembly plates 3 with reverse synchronous transmission are also provided on the welding platform 1. A fixture module 4 is fixed on the two assembly plates 3. The number of the fixture modules 4 is multiple and they are unevenly installed above the assembly plates 3. The number of the fixture modules 4 is increased according to the actual clamping points of the workpiece to be welded, and the distance between the two assembly plates 3 is adjusted according to the specifications of the workpiece to be welded; The fixture module 4 is detachably slidably connected to the assembly plate 3 through an adjustment seat 41. The adjustment seat 41 is movably installed with a rotating seat 43 in the E, D, and F directions, which enables the rotating seat 43 to adjust the relative position, clamping height, and clamping angle between the fixture and the workpiece to be welded. An upper clamping piece 45 is movably installed on the rotating seat 43 in the H direction, and the rotating seat 43 can also be movably installed with a lower clamping piece 47 in the D, G, and H directions, which enables the ends of the upper clamping piece 45 and the lower clamping piece 47 to flip up and down along the connecting part to adapt to the inclination angle of the workpiece. The lower clamping piece 47 can also turn in the direction of the workpiece to provide the function of clamping or supporting the workpiece; A pressing member 48 is detachably mounted on the clamping surface of the upper clamping piece 45. A pressing rod 481 is telescopically arranged on the pressing member 48 along the clamping direction. The end of the pressing rod 481 acts on the surface of the workpiece through the pushing action of medium pressure. This enables the pressing member 48 to be modularly assembled on the upper clamping piece 45. On the one hand, it can adjust the clamping points according to the surface of the workpiece. On the other hand, it can also avoid the wear of the clamping points by replacing the pressing member 48.

[0023] In the appendix Figure 1 In the appendix, two sets of parallel guide rails 11 are arranged on the welding platform 1. The two ends of the two assembly plates 3 are respectively slidably mounted on the two ends of the two guide rails 11. The two sets of assembly plates 3 are driven by the guide rails 11 to achieve reverse transmission, so as to adjust the distance between the fixture module 4 above the assembly plate 3 and the workpiece to be welded. And a substrate 2 is arranged on the surface of the welding platform 1. A plurality of threaded holes are evenly distributed on the upper surface of the substrate 2. The support member 21 is fixed on the substrate 2 through the threaded holes.

[0024] In the appendix Figure 2 In the appendix, the assembly plate 3 is strip-shaped. A locking groove 33 is formed on one side surface of the assembly plate 3. The assembly plate 3 is provided with an assembly seat 31 through the locking groove 33. The adjusting seat 41 is bolt-fixed through the assembly seat 31, which is convenient for disassembly operation. Among them, a guide piece 32 is arranged on the upper surface of the assembly plate 3. An electric contact 311 corresponding to the guide piece 32 is arranged at the bottom of the assembly seat 31. The guide piece 32 on the assembly plate 3 cooperates with the electric contact 311 to supply power and transmit electrical signals to each component of the fixture module 4 on the assembly seat 31, realizing the automatic control of the fixture module 4.

[0025] Referring to the appendix Figure 3 - Appendix Figure 4 As shown, a guide rod 411 is installed inside the adjusting seat 41. A guide seat 412 sliding on the adjusting seat 41 is sleeved outside the guide rod 411. A lifting telescopic machine 42 is installed above the guide seat 412. A first steering mechanism 431 is installed inside the bottom of the rotating seat 43. It includes a first motor and a first electromagnetic lock through the first steering mechanism 431. The output shaft of the first motor is connected to the telescopic end of the lifting telescopic machine 42. The lifting telescopic machine 42 provides a lifting adjustment function for the rotating seat 43, and the first steering mechanism 431 provides a function of adjusting the clamping direction for the rotating seat 43. Further, in the appendix Figure 5Among them, one end of the adjusting seat 41 facing away from the clamping direction is installed with a buffer adjusting motor 414. The output shaft of the buffer adjusting motor 414 is connected with an adjusting rod 415 arranged parallel to the guide rod 411. The outer part of the adjusting rod 415 is threadedly connected with a telescopic rod 416. The end of the telescopic rod 416 is connected with a pressing block 417 sleeved on the outside of the guide rod 411. A buffer spring 413 is also sleeved on the outside of the guide rod 411. The two ends of the buffer spring 413 are respectively in contact with the pressing block 417 and the guide seat 412. The guide seat 412 slides inside the adjusting seat 41 through the guide rod 411. And by sleeving the buffer spring 413 on the outside of the guide rod 411, a buffer force is provided in the clamping direction of the fixture. And the buffer adjusting motor 414 is configured. The adjusting rod 415 connected to the output shaft of the buffer adjusting motor 414 is used to push the telescopic rod 416 threadedly connected to its outside to expand and contract, so that the pressing block 417 at the end of the telescopic rod 416 compresses and releases the buffer spring 413, and the buffer force of the buffer spring 413 on the guide seat 412 is adjusted.

[0026] Meanwhile, in order to realize the adjustment of the offset angle of the upper clamping piece 45, a fixed support plate 44 arranged in an inverted L shape is installed on one side of the rotating seat 43. The upper clamping piece 45 is connected to the upper end of the fixed support plate 44 through a rotating shaft. An offset telescoping machine 441 is connected between the end of the fixed support plate 44 facing away from the upper clamping piece 45 and the upper clamping piece 45 through a rotating shaft. Under the telescopic adjustment of the telescopic part of the offset telescoping machine 441, the upper clamping piece 45 deflects along the connection end of the fixed support plate 44.

[0027] In the attachment Figure 6 Among them, in order to realize that the lower clamping piece 47 can move along the D direction, a lifting adjusting motor 432 is installed inside the top of the rotating seat 43. The output shaft of the lifting adjusting motor 432 is connected with a lead screw 433. A sliding nut 434 is installed outside the lead screw 433, and an L-shaped movable support plate 46 is fixed through the sliding nut 434. By driving the lead screw 433 to rotate by the lifting adjusting motor 432, the movable support plate 46 threadedly connected to its outside is pushed to lift and lower, so as to adjust the movement of the lower clamping piece 47 along the direction of the upper clamping piece 45, and realize the functions of clamping and releasing. Furthermore, in order to realize the rotation of the lower clamping piece 47 along the G and H directions and switch the functions of clamping and supporting the workpiece, a second steering mechanism 461 is installed inside the movable support plate 46, and the second steering mechanism 461 includes a second motor and a second electromagnetic lock, and the output shaft of the second motor is connected to one side of the rotating seat 43. A third steering mechanism 462 is also installed at the lower end of the movable support plate 46, and the third steering mechanism 462 includes a third motor and a third electromagnetic lock, and the output shaft of the third motor is connected to the rotating shaft connecting part of the lower clamping piece 47. Under the drive of the second steering mechanism 461 and the third steering mechanism 462, the lower clamping piece 47 can rotate by itself through the movable support plate 46, and the lower clamping piece 47 can also rotate along the rotating shaft connecting end of the movable support plate 46, and the locking operation is completed by using the second electromagnetic lock and the third electromagnetic lock; See attached Figure 7 In the figure, the interior of the pressure member 48 is separated by a partition 482 to form an air pressure chamber 484, and an electric control valve 483 is provided on the side of the partition 482 facing away from the air pressure chamber 484. The air outlet of the electric control valve 483 passes through the partition 482 and extends into the air pressure chamber 484. The switch of the external air pipe is controlled by the electric control valve 483 so that a certain pressure is provided in the air pressure chamber 484. A positioning rod 485 is provided at one end of the partition 482 close to the push rod 481, and the end of the positioning rod 485 passes through and extends into the interior of the push rod 481, and a return spring 486 that contacts the end of the positioning rod 485 is also provided inside the push rod 481. The return spring 486 is used to push the push rod 481 to act on the surface of the workpiece, and the pressure in the air pressure chamber 484 is used to provide a force for the push rod 481 to be applied to the surface of the workpiece.

[0028] It is worth noting that a corresponding electrical signal contact 497 is also provided between the partition 482 and the push rod 481. When the push rod 481 clamps the surface of the workpiece and the pressure in the air pressure chamber 484 is insufficient to support the push rod 481, the electrical signal contact 497 between the partition 482 and the push rod 481 comes into contact, so that it can be understood at the first time that the force acting on the surface of the workpiece has reached its peak, and deformation of the workpiece can be avoided by adjusting the air pressure inside the air pressure chamber 484 or appropriately releasing the buffer adjustment motor 414.

[0029] The intelligent arc welding fixture of this embodiment significantly improves the flexibility and adaptability of welding clamping through modularization, multi-degree-of-freedom adjustment and intelligent buffer control design. The modular design supports the rapid increase and decrease of clamping points, and the multi-degree-of-freedom adjustment can adapt to complex workpiece geometries; the buffer spring and air pressure system dynamically absorb impact, and combine with pressure monitoring to avoid overload deformation; electronic control adjustment and signal feedback realize automated clamping, reduce manual intervention, and improve welding accuracy; the detachable structure and standardized interface reduce maintenance difficulty and extend equipment life.

[0030] The present invention can adjust the clamping depth, clamping height, clamping orientation, and clamping angle of the fixture according to workpieces with complex curved surfaces or large size differences. Especially when it comes to mixed-line production of multiple body models, it can adaptively adjust the fixture without frequently replacing the fixture module 4, improving the processing efficiency. It can insert and press the pressure member 48 according to the welding points on the clamping part, and can replace the pressure member 48 whose accuracy has decreased due to wear without replacing the entire fixture module 4. By injecting air pressure, it can adjust the force exerted by the pressure rod 481 on the welding point position, avoid the situation of station offset, and improve the welding effect.

[0031] Based on the above embodiment, the lifting and telescoping machine 42 and the offset telescoping machine 441 can be selected from structures such as cylinders, oil cylinders, motors with lifting rods, etc., and are not limited in this embodiment.

[0032] An intelligent arc welding method, applied to the above intelligent arc welding fixture, includes the following steps: Step 1: Install corresponding support members 21 on the welding platform 1 according to the protruding and supported parts of the workpiece to be welded. After adjusting the distance between the two sets of assembly plates 3, place the workpiece to be welded on the support members 21; Step 2: Fix corresponding fixture modules 4 on the two sets of assembly plates 3 according to the clamping parts of the workpiece to be welded, and adjust the distance between the two sets of assembly plates 3 so that the fixture module 4 acts on the edge of the workpiece to be welded; Step 3: Adjust the horizontal position of the adjusting seat 41 along the E direction according to the depth of the clamping part of the workpiece to be welded, adjust the height of the rotating seat 43 along the D direction according to the height of the clamping part of the workpiece to be welded, adjust the orientation of the rotating seat 43 of the fixture module 4 along the F direction according to the horizontal angle of the clamping part of the workpiece to be welded, and adjust the angles of the upper clamping piece 45 and the lower clamping piece 47 along the H direction according to the inclination degree of the clamping part of the workpiece to be welded; Step 4: Insert and fix the corresponding pressure member 48 into the upper clamping piece 45 according to the welding point position of the clamping part of the workpiece to be welded, inject high-pressure gas into the pressure member 48 to adjust the force exerted by the pressure rod 481 on the welding point position of the workpiece to be welded, and adjust the height of the lower clamping piece 47 to cooperate with the upper clamping piece 45 to complete the clamping and fixing of each clamping part of the workpiece to be welded, so as to perform welding operations on each welding point.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent arc welding fixture, characterized in that: It includes a welding platform and several supporting members for carrying the parts to be welded. The welding platform is also provided with two sets of assembly plates with reverse synchronous transmission. The two assembly plates are fixed with fixture modules. The number of the fixture modules is multiple and they are unevenly installed above the assembly plates. The clamp module is detachably slidably connected to the assembly plate through an adjustment seat, the adjustment seat is movably mounted with a rotating seat along the E, D and F directions, an upper clamp is movably mounted on the rotating seat along the H direction, and a lower clamp can also be movably mounted on the rotating seat along the D, G and H directions; A pressing piece is detachably mounted on the clamping surface of the upper clamping piece, and a pressing rod is telescopically arranged on the pressing piece along the clamping direction, and the end of the pressing rod is pushed on the surface of the workpiece by the medium pressure.

2. The intelligent arc welding fixture according to claim 1, characterized in that: The welding platform is provided with two sets of parallel guide rails, and the two ends of the two assembly plates are slidably mounted on the two ends of the two guide rails respectively; A base plate is arranged on the surface of the welding platform, a plurality of threaded holes are evenly distributed on the base plate, and the support member is fixed on the base plate through the threaded holes.

3. The intelligent arc welding fixture according to claim 1, characterized in that: The assembly plate is arranged in a strip shape, a locking groove is provided on one side surface of the assembly plate, an assembly seat is installed on the assembly plate through the locking groove, and the adjustment seat is fixed by bolts of the assembly seat; A guide piece is arranged on the upper surface of the assembly plate, and an electrical contact corresponding to the guide piece is arranged on the bottom of the assembly seat.

4. The intelligent arc welding fixture according to claim 1, characterized in that: A guide rod is installed inside the adjusting seat, and a guide seat sliding on the adjusting seat is sleeved outside the guide rod; A lifting and telescopic machine is installed above the guide seat, and a first steering mechanism is installed on the inner side of the bottom of the rotating seat. The first steering mechanism includes a first motor and a first electromagnetic lock, and the output shaft of the first motor is connected to the telescopic end of the lifting and telescopic machine.

5. The intelligent arc welding fixture as claimed in claim 4, characterized in that: A buffer adjustment motor is installed at one end of the adjustment seat facing away from the clamping direction, the output shaft of the buffer adjustment motor is connected to an adjustment rod arranged parallel to the guide rod, and the external thread of the adjustment rod is connected to a telescopic rod; The end of the telescopic rod is connected with a pressure block sleeved on the outside of the guide rod, and the outside of the guide rod is also sleeved with a buffer spring, and the two ends of the buffer spring are respectively in contact with the pressure block and the guide seat.

6. The intelligent arc welding fixture according to claim 1, characterized in that: An inverted L-shaped fixed support plate is installed on one side of the rotating seat, the upper clamp is connected to the upper end of the fixed support plate through a rotating shaft, and an offset telescopic machine is connected between the end of the fixed support plate away from the upper clamp and the upper clamp through a rotating shaft.

7. The intelligent arc welding fixture according to claim 1, characterized in that: A lifting and lowering adjustment motor is installed on the inner side of the top of the rotating seat, the output shaft of the lifting and lowering adjustment motor is connected to a lead screw, a sliding nut is installed outside the lead screw, and an L-shaped movable support plate is fixed by the sliding nut; A second steering mechanism is installed inside the movable support plate, the second steering mechanism includes a second motor and a second electromagnetic lock, and the output shaft of the second motor is connected to one side of the rotating seat; A third steering mechanism is also installed at the lower end of the movable support plate. The third steering mechanism includes a third motor and a third electromagnetic lock. The output shaft of the third motor is connected to the rotating shaft connecting part of the lower clamping piece.

8. The intelligent arc welding fixture according to claim 1, characterized in that: The interior of the pressure member is separated by a partition to form an air pressure chamber, and an electric control valve is provided on the side of the partition away from the air pressure chamber, and the air outlet of the electric control valve penetrates the partition and extends into the air pressure chamber; A positioning rod is provided at one end of the partition close to the support rod, the end of the positioning rod passes through and extends into the interior of the support rod, and a return spring is also provided inside the support rod to abut against the end of the positioning rod, and corresponding electrical signal contacts are also provided between the partition and the support rod.

9. An intelligent arc welding method, applied to an intelligent arc welding fixture according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: Install the corresponding support on the welding platform according to the protruding support part of the workpiece to be welded, adjust the distance between the two sets of assembly plates, and then place the workpiece to be welded on the support; Step 2: According to the clamping position of the workpiece to be welded, fix the corresponding fixture modules to the two sets of assembly plates, and adjust the distance between the two sets of assembly plates so that the fixture modules act on the edge of the workpiece to be welded; Step 3: According to the depth of the clamping part of the welded workpiece, adjust the horizontal position of the adjustment seat along the E direction, according to the height of the clamping part of the welded workpiece, adjust the height of the rotating seat along the D direction, according to the horizontal angle of the clamping part of the welded workpiece, adjust the orientation of the rotating seat of the fixture module along the F direction, according to the inclination of the clamping part of the welded workpiece, adjust the angles of the upper and lower clamps along the H direction; Step 4: According to the position of the weld point of the clamping part of the workpiece to be welded, the corresponding pressure piece is inserted and fixed with the upper clamp, and high-pressure gas is injected into the pressure piece to adjust the force of the pressure rod acting on the weld point position of the workpiece to be welded, and the height of the lower clamp is adjusted, and the upper clamp is cooperated to complete the clamping and fixing of each clamping part of the workpiece to be welded, so as to perform welding operations on each weld point.

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