A high-precision laser welding machine

Abstract

The present invention relates to the field of welding technology, and in particular to a high-precision laser welding machine, comprising a laser welding mechanical arm and a workbench arranged next to the laser welding mechanical arm, the top of the workbench is provided with an inward-recessed top groove, the middle position of the bottom of the top groove is provided with an inward-recessed bottom groove, the bottom of the bottom groove is fixedly connected to a servo motor, the bottom end of the top groove is rotatably connected to a bottom ring, a cylinder is provided above the bottom ring, and a plurality of support rods are fixedly connected between the bottom ring and the cylinder. The present invention can not only automatically release the clamping of welded workpieces on the multi-station workbench through the mutual cooperation of the above-mentioned structures, but also automatically clamp the replaced workpiece first when the workpiece is replaced, and then drive multiple stations to rotate to replace the workpiece at the welding position, and repeat this process, which can not only save the time of workers for repeated disassembly to check the welding quality, but also save time and effort, and avoid the situation that workers cannot keep up with the laser machine.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a high-precision laser welding machine. Background Art

[0002] Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. It is one of the important aspects of the application of laser material processing technology. Due to the advantages of high efficiency and low cost, laser welding has gradually replaced the original manual welding, flame welding and other welding methods. The principle of laser welding can be divided into heat conduction welding and laser deep-melting welding. It has been widely used in aerospace, automobile manufacturing, medical and other fields.

[0003] In order to improve production efficiency, existing laser welding machines will perform continuous welding on workpieces by setting up multi-station welding fixtures. Before welding, two or more workpieces will be connected into a basic model by spot welding, and then the joints will be fully welded by the laser welding machine.

[0004] A multi-station laser welding device with publication number CN220127901U in the prior art can fix multiple groups of workpieces on the L-shaped support plate at the same time through the setting of fixing components, and can clamp and fix workpieces of different shapes at the same time, effectively improving the welding efficiency. Through multiple groups of clamping and fixing methods, the clamping force can be evenly distributed on the workpiece, avoiding deformation, damage and other problems caused by local clamping too tight or too loose, thereby ensuring the accuracy of workpiece processing and surface quality.

[0005] Although it is possible to clamp and fix multiple workpieces at the same time, there are still some defects in the actual welding process. In order to avoid displacement during the transfer of workpieces that affects the welding accuracy, the multi-station welding fixture will clamp the workpieces during the transfer process. As a result, workers are required to frequently disassemble the workpieces for loading during the loading process, which is not only time-consuming and labor-intensive, but also when welding some workpieces with shorter welds, the welding speed is often faster than the speed of repeated manual disassembly and loading, which will greatly reduce the welding efficiency of the device.

[0006] Therefore, a high-precision laser welding machine is proposed to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a high-precision laser welding machine.

[0008] To achieve the above purpose, the technical solution adopted by the present invention is: a high-precision laser welding machine, including a laser welding mechanical arm, and a tooling table arranged next to the laser welding mechanical arm, the top of the tooling table is provided with a sunken top groove, the middle position of the bottom of the top groove is provided with a sunken bottom groove, the bottom of the bottom groove is fixedly connected to a servo motor, the bottom end of the top groove is rotatably connected to a bottom ring, a cylinder is provided above the bottom ring, a plurality of support rods are fixedly connected between the bottom ring and the cylinder, a transmission rod is fixedly connected to the output end of the servo motor and the transmission rod passes through the bottom of the cylinder, a top ring is provided between the bottom ring and the cylinder, and the support rod passes through the top end of the top ring, four lower die seats are equidistantly fixedly connected to the top of the top ring, upper die seats are provided above the four lower die seats, a rotating mechanism for rotating a workpiece is provided in the lower die seat and the upper die seat, and a feeding mechanism for automatically controlling the upper die seat to clamp the workpiece is provided in the cylinder;

[0009] The feeding mechanism includes a driving ring, which is arranged on the inner side of the cylinder, and a plurality of connecting rods are fixedly connected between the driving ring and the top of the transmission rod, the side wall of the driving ring is provided with an inwardly recessed fixing groove, a pawl is rotatably connected to the inner side of the fixing groove, four pawl blocks are fixedly connected to the inner wall of the cylinder and are located between the upper die seat, an upper spring is fixedly connected between the inner side of the fixing groove and the pawl, a sliding rod is slidably connected to the bottom of the cylinder and located above the upper die seat, an annular groove gradually inclined upward is provided at the bottom of the driving ring and located above one of the sliding rods, the top bolt of the upper die seat is installed at the bottom end of the sliding rod, the top outer wall of the sliding rod is fixedly connected to a limiting ring, and a plurality of lower springs are fixedly connected between the bottom of the limiting ring and the inner bottom end of the cylinder.

[0010] In the above technical solution, further, the annular groove is arranged next to the fixed groove, and an inward sliding groove is opened on the top of the sliding rod, and a roller is rotatably connected to the inner side of the sliding groove, wherein the outer walls of three of the rollers are in contact with the bottom of the driving ring, and the outer wall of another roller is in contact with the bottom of the annular groove.

[0011] In the above technical solution, further, a travel switch is fixedly connected to the top of the workbench and located next to the top ring, a straight rod is fixedly connected to the outer wall of the top ring and located next to the lower mold base, a vertical rod for touching the touch end of the travel switch is fixedly connected to the top of the straight rod, and the travel switch is electrically connected to the servo motor through a controller.

[0012] In the above technical solution, further, a recessed installation groove is provided at the deepest part of the bottom of the annular groove, a touch sensor is fixedly connected to the inner side of the installation groove, and the touch sensor is electrically connected to the servo motor through a controller.

[0013] In the above technical solution, further, a positioning ring is fixedly connected to the inner side of the bottom ring and extends to the top of the top ring. A pair of sunken adjustment grooves are provided at the top of the top ring and beside the positioning ring. A positioning plate is slidably connected to the inner side of the adjustment groove. A plurality of positioning grooves are equidistantly provided on the outer wall of the positioning ring and corresponding to the positioning plate, and the positioning plate is inserted into the inner side of one of the positioning grooves. A push plate is fixedly connected to the top of the positioning plate.

[0014] In the above technical solution, further, a pair of positioning springs are fixedly connected between the inner side of the adjustment groove and the side wall of the positioning plate.

[0015] In the above technical solution, further, a height scale is provided on the outer wall of the positioning ring and beside the positioning groove, and a plurality of compression springs are fixedly connected between the top of the bottom ring and the bottom of the top ring.

[0016] In the above technical solution, further, the top of the cylinder is rotatably connected to a fixed plate, the bottom of the fixed plate is fixedly connected to a support plate, the bottom of the support plate is fixedly connected to a four-fifths-shaped fixed ring through a ratchet block, and the bottom of the fixed ring is in conflict with the tops of three of the limit rings, and the top of the workbench is fixedly connected to a pair of L-shaped rods, the top of the L-shaped rods is fixedly connected to the top of the fixed plate, and the top of the fixed plate is respectively fixedly connected to a red warning light and a green warning light, and the red warning light and the green warning light are electrically connected to a uniform controller.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the setting of the feeding mechanism, not only can the clamping of the welded workpiece on the multi-station workbench be automatically released, but also when the workpiece is replaced, the replaced workpiece will be automatically clamped first, and then multiple stations will be driven to rotate to replace the workpiece in the welding position. This can be repeated, which can not only save the workers' time for repeated disassembly to check the welding quality, but also save time and effort, and avoid the situation where workers cannot keep up with the laser machine.

[0019] 2. Through the cooperation of the positioning ring, positioning plate, positioning spring and other structures, the clamping position of the feeding mechanism can be adjusted according to the welding workpieces of different sizes, so that workpieces of different specifications can be used, further improving the application scope of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance structure of the welding machine of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the tooling table of the present invention;

[0022] Figure 3It is a schematic diagram of the overall appearance structure of the feeding mechanism of the present invention;

[0023] Figure 4 It is a schematic diagram of the overall appearance structure of the tooling table of the present invention;

[0024] Figure 5 It is a bottom-up stereoscopic structural schematic diagram of the driving ring of the present invention;

[0025] Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of a cylinder side surface of the present invention;

[0026] Figure 7 The present invention is attached Figure 3 A schematic diagram of the partially enlarged structure at center A;

[0027] Figure 8 It is a schematic diagram of the overall appearance structure of the bottom ring of the present invention;

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the full cutaway side of the cylinder of the present invention;

[0029] Fig.10 It is a schematic diagram of the overall appearance structure of the fixing plate and the fixing ring of the present invention.

[0030] In the figure: 1. Laser welding robot arm; 2. Workbench; 3. Top groove; 4. Servo motor; 5. Bottom ring; 6. Cylinder; 7. Support rod; 8. Top ring; 9. Lower die seat; 10. Upper die seat; 11. Rotating mechanism; 12. Driving ring; 13. Fixed groove; 14. Ratchet; 15. Ratchet block; 16. Upper spring; 17. Annular groove; 18. Sliding rod; 19. Limiting ring; 20. Lower spring; 21. Sliding groove; 22. Roller; 23. Travel switch 1. Close; 24. Vertical rod; 25. Mounting slot; 26. Touch sensor; 27. Positioning ring; 28. Adjustment slot; 29. ​​Positioning plate; 30. Positioning slot; 31. Push plate; 32. Positioning spring; 33. Connecting rod; 34. Bottom slot; 35. Straight rod; 36. Red warning light; 37. Altitude scale; 38. Compression spring; 39. Green warning light; 40. Transmission rod; 41. Fixed ring; 42. Fixed plate; 43. L-shaped rod; 44. Support plate. DETAILED DESCRIPTION

[0031] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0032] like Figure 1-Figure 10A high-precision laser welding machine shown in the figure comprises a laser welding robot arm 1, and a tooling table 2 arranged next to the laser welding robot arm 1, a sunken top groove 3 is provided on the top of the tooling table 2, a sunken bottom groove 34 is provided at the middle position of the bottom of the top groove 3, a servo motor 4 is fixedly connected to the bottom of the bottom groove 34, a bottom ring 5 is rotatably connected to the bottom end of the top groove 3, a cylinder 6 is arranged above the bottom ring 5, a plurality of support rods 7 are fixedly connected between the bottom ring 5 and the cylinder 6, a transmission rod 40 is fixedly connected to the output end of the servo motor 4, and the transmission rod 40 passes through the bottom of the cylinder 6, and a servo motor 4 is fixedly connected to the bottom of the cylinder 6. A top ring 8 is provided, and a support rod 7 is arranged through the top end of the top ring 8. Four lower die seats 9 are fixedly connected to the top of the top ring 8 at equal distances. An upper die seat 10 is arranged above each of the four lower die seats 9. A rotating mechanism 11 for rotating the workpiece is arranged in each of the lower die seats 9 and the upper die seat 10. The rotating mechanism 11 is mainly composed of a motor, a driving gear and a driven gear. It can automatically rotate after welding one side of the workpiece, thereby ensuring comprehensive welding of the workpiece. It belongs to a mature technology in the prior art and will not be described in detail here. A feeding mechanism for automatically controlling the upper die seat 10 to clamp the workpiece is arranged in the cylinder 6;

[0033] The feeding mechanism includes a driving ring 12, which is arranged on the inner side of the cylinder 6, and a plurality of connecting rods 33 are fixedly connected between the driving ring 12 and the top of the transmission rod 40, a sunken fixing groove 13 is provided on the side wall of the driving ring 12, a ratchet 14 is rotatably connected to the inner side of the fixing groove 13, four ratchet blocks 15 are fixedly connected to the inner side wall of the cylinder 6 and the ratchet blocks 15 are located between the upper die seat 10, an upper spring 16 is fixedly connected between the inner side of the fixing groove 13 and the ratchet 14, and a slide rod 18 is slidably connected to the bottom of the cylinder 6 and located above the upper die seat 10;

[0034] A gradually upwardly inclined annular groove 17 is provided at the bottom of the driving ring 12 and above one of the slide bars 18. The top bolt of the upper die seat 10 is installed at the bottom of the slide bar 18. A limit ring 19 is fixedly connected to the outer wall of the top of the slide bar 18. A plurality of lower springs 20 are fixedly connected between the bottom of the limit ring 19 and the inner bottom end of the cylinder 6. The annular groove 17 is arranged beside the fixed groove 13, and an inwardly sunken slide groove 21 is provided at the top of the slide bar 18. A roller 22 is rotatably connected to the inner side of the slide groove 21. The arrangement of the roller 22 facilitates the rotational extrusion of the upper die seat 10, and at the same time, the upper The operation of the material mechanism is smoother, the outer walls of three rollers 22 are in contact with the bottom of the driving ring 12, the outer wall of another roller 22 is in contact with the bottom of the annular groove 17, the top of the cylinder 6 is rotatably connected with a fixed plate 42, the bottom of the fixed plate 42 is fixedly connected with a support plate 44, the bottom of the support plate 44 passes through the ratchet block 15 and is fixedly connected with a four-fifths-shaped fixed ring 41, and the bottom of the fixed ring 41 is in conflict with the tops of three of the limit rings 19, a pair of L-shaped rods 43 are fixedly connected to the top of the tooling table 2, and the top of the L-shaped rods 43 is fixedly connected to the top of the fixed plate 42;

[0035] During the laser welding process of the workpiece, the welded workpiece on the lower die seat 9 is first taken out, and then the servo motor 4 is controlled to start and drive the transmission rod 40 to rotate, and then the driving ring 12 is driven to rotate through the connecting rod 33. Since the annular groove 17 is an inclined circular groove, the roller 22 in the annular groove 17 will be gradually pushed out, and the lower spring 20 will be compressed, thereby driving the slide bar 18 and the upper die seat 10 to slide downward, clamping the workpiece in the lower die seat 9, and then as the driving ring 12 continues to rotate, the pawl 14 will be driven to move to the side of the ratchet block 15, and then the ratchet 14 will push the vertical surface of the ratchet block 15 to drive the cylinder 6 to rotate, thereby driving the slide bar 18 and the upper die seat 10 to rotate, and at the same time, the bottom ring 5, the top ring 8 and the lower die seat 9 are driven to rotate at the same time through the support rod 7, thereby turning away the welded workpiece, and rotating the workpiece to be welded to the side of the laser welding robot arm 1;

[0036] At the same time, the roller 22 and the limiting ring 19 will be driven to move, so that the limiting ring 19 on the rear side of the annular groove 17 is inserted under four-fifths of the fixing ring 41, thereby limiting the sliding position of the roller 22 to prevent the roller 22 from getting stuck in the annular groove 17 when the drive ring 12 is reset. At the same time, the rear roller 22 will slide into the gap of the fixing ring 41, and finally the servo motor 4 can be controlled to reverse and drive the transmission rod 40 to reverse, thereby driving the drive ring 12 to reset, and driving the pawl 14 to move away from the ratchet block 15, so it will not push the cylinder 6 to rotate, and then when the pawl 14 reaches the ratchet block 15 on the rear side, it will be pushed by the inclined surface of the ratchet block 15 to rotate around the hinge, and at the same time compress the cylinder 6. The upper spring 16 causes the pawl 14 to be inserted into the fixed groove 13. Then, when the pawl 14 is rotated out of the squeeze point with the ratchet block 15, the elastic force of the upper spring 16 will push the pawl 14 to flip and reset. At the same time, as the driving ring 12 continues to slide, the roller 22 at the back will slide into the annular groove 17, so that under the elastic force of the lower spring 20, the roller 22 and the slide bar 18 slide upward, and at the same time drive the upper mold base 10 at the bottom to slide upward, releasing the clamping of the workpiece after welding, so that it can be taken out for replacement, and the laser welding robot arm 1 welds the replaced workpiece at the same time, and this process is repeated. It not only saves the workers' time for repeated disassembly to check the welding quality, but also saves time and effort, and avoids the situation where workers cannot keep up with the laser machine.

[0037] In order to further improve the automation degree of the device, a travel switch 23 is fixedly connected to the top of the tooling table 2 and located next to the top ring 8, and a straight rod 35 is fixedly connected to the outer wall of the top ring 8 and located next to the lower die base 9. The arrangement of the straight rod 35 can avoid the lower die base 9 from being obstructed when the rotating mechanism 11 drives the rotation. A vertical rod 24 for touching the touch end of the travel switch 23 is fixedly connected to the top of the straight rod 35. The travel switch 23 is electrically connected to the servo motor 4 through the controller;

[0038] The deepest part of the bottom of the annular groove 17 is provided with an inwardly sunken mounting groove 25, a touch sensor 26 is fixedly connected to the inner side of the mounting groove 25, a red warning light 36 and a green warning light 39 are fixedly connected to the top of the fixing plate 42, and the touch sensor 26 is electrically connected to the servo motor 4, the red warning light 36 and the green warning light 39 through the controller;

[0039] When the feeding mechanism is started to feed the workpiece to be welded, the driving ring 12 rotates to push the top ring 8 to rotate and replace the workpiece, which will drive the straight rod 35 and the vertical rod 24 to rotate. Then, when the workpiece reaches the specified position, it will drive the vertical rod 24 on the other side to touch the travel switch 23, and then the travel switch 23 will transmit a signal to the controller. The controller controls the servo motor 4 to reverse and drive the driving ring 12 to reset. Then, the roller 22 slides into the annular groove 17 through the reverse rotation of the driving ring 12, and touches the touch sensor 26. Then, the touch sensor 26 transmits a signal to the controller, and the controller controls the servo motor 4 to turn off and control the green warning light 39 to turn on (conversely, when the controller controls the servo motor 4 to start, the red warning light 36 will be energized at the same time to prompt the worker to start the operation), thereby realizing automatic feeding of the device without manual operation, and when the feeding mechanism stops running, the worker observes that the green warning light 39 is on, and the workpiece can be replaced, avoiding the worker from replacing it before stopping the operation, thereby improving the safety performance of the device.

[0040] In order to facilitate the use of welding workpieces of different specifications by the feeding mechanism, a positioning ring 27 is fixedly connected to the inner side of the bottom ring 5 and the positioning ring 27 is extended to the top of the top ring 8. A pair of inward adjustment grooves 28 are provided at the top of the top ring 8 and beside the positioning ring 27. A positioning plate 29 is slidably connected to the inner side of the adjustment groove 28. A plurality of positioning grooves 30 are equidistantly provided on the outer wall of the positioning ring 27 and corresponding to the positioning plate 29, and the positioning plate 29 is plugged into the inner side of one of the positioning grooves 30. A push plate 31 is fixedly connected to the top of the positioning plate 29. Through the setting of the push plate 31, it is convenient to push the positioning plate 29 to quickly release the position restriction of the top ring 8, thereby improving the convenience of the device.

[0041] A pair of positioning springs 32 are fixedly connected between the inner side of the adjustment groove 28 and the side wall of the positioning plate 29. A height scale 37 is provided on the outer wall of the positioning ring 27 and next to the positioning groove 30. By setting the height scale 37, the position of the top ring 8 on the height scale 37 can be observed during the process of adjusting the position of the top ring 8, so that the spacing between the upper die seat 10 and the lower die seat 9 can be accurately adjusted to improve the clamping effect of the device, thereby ensuring the welding accuracy. A plurality of clamping springs 38 are fixedly connected between the top of the bottom ring 5 and the bottom of the top ring 8. By setting the clamping springs 38, an upward elastic force can be provided to the top ring 8, thereby avoiding the phenomenon that the top ring 8 loses thrust and slides to the bottom after the limit is released, and the top ring 8 needs to be pulled upward for adjustment, thereby improving the convenience of the adjustment process.

[0042] When the clamping position of the feeding mechanism needs to be adjusted according to the size of the welding workpiece, first use the tool to replace the corresponding upper die base 10 and lower die base 9, and then push the push plate 31 to both sides to drive the positioning plate 29 to slide out of the positioning groove 30, so as to release the position fixation of the top ring 8, and at the same time compress the positioning spring 32, so as to press the top ring 8 downward to slide on the support rod 7, and at the same time compress the clamping spring 38, so as to adjust the distance between the upper die base 10 and the lower die base 9, thereby realizing the adjustment of the clamping position of the feeding mechanism, and after the adjustment is completed, the push plate 31 can be released, and then the positioning plate 29 is pushed into the corresponding positioning groove 30 by the elastic force of the positioning spring 32, so as to realize the position fixation of the top ring 8.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision laser welding machine, comprising a laser welding robot arm (1), and a tooling table (2) arranged next to the laser welding robot arm (1), characterized in that: The top of the workbench (2) is provided with an inward-recessed top groove (3), the middle position of the bottom of the top groove (3) is provided with an inward-recessed bottom groove (34), the bottom of the bottom groove (34) is fixedly connected to a servo motor (4), the bottom end of the top groove (3) is rotatably connected to a bottom ring (5), a cylinder (6) is provided above the bottom ring (5), a plurality of support rods (7) are fixedly connected between the bottom ring (5) and the cylinder (6), the output end of the servo motor (4) is fixedly connected to a transmission rod (40), and the transmission rod (40) penetrates The bottom of the cylinder (6) is provided, a top ring (8) is provided between the bottom ring (5) and the cylinder (6), and the support rod (7) is provided through the top of the top ring (8), four lower die seats (9) are fixedly connected to the top of the top ring (8) at equal intervals, an upper die seat (10) is provided above each of the four lower die seats (9), a rotating mechanism (11) for rotating a workpiece is provided in each of the lower die seats (9) and the upper die seat (10), and a feeding mechanism for automatically controlling the upper die seat (10) to clamp the workpiece is provided in the cylinder (6); The feeding mechanism comprises a driving ring (12), the driving ring (12) being arranged on the inner side of the cylinder (6), and a plurality of connecting rods (33) being fixedly connected between the driving ring (12) and the top end of the transmission rod (40), the side wall of the driving ring (12) being provided with an inwardly sunken fixing groove (13), the inner side of the fixing groove (13) being rotatably connected with a ratchet (14), the inner side wall of the cylinder (6) being fixedly connected with four ratchet blocks (15) and being located between the upper die seat (10), the inner side of the fixing groove (13) and the ratchet (14) being fixedly connected with each other. An upper spring (16) is fixedly connected, a slide rod (18) is slidably connected to the bottom of the cylinder (6) and located above the upper die seat (10), a ring groove (17) which is gradually inclined upward is opened at the bottom of the drive ring (12) and located above one of the slide rods (18), the top bolt of the upper die seat (10) is installed at the bottom end of the slide rod (18), the top outer wall of the slide rod (18) is fixedly connected to a limit ring (19), and a plurality of lower springs (20) are fixedly connected between the bottom of the limit ring (19) and the inner bottom end of the cylinder (6); The annular groove (17) is arranged beside the fixed groove (13), and the top of the slide rod (18) is provided with an inwardly sunken slide groove (21), the inner side of the slide groove (21) is rotatably connected with a roller (22), wherein the outer walls of three of the rollers (22) are in contact with the bottom of the driving ring (12), and the outer wall of another roller (22) is in contact with the bottom of the annular groove (17); A travel switch (23) is fixedly connected to the top of the tooling table (2) and located next to the top ring (8); a straight rod (35) is fixedly connected to the outer wall of the top ring (8) and located next to the lower mold base (9); a vertical rod (24) is fixedly connected to the top of the straight rod (35) for touching the touch end of the travel switch (23); and the travel switch (23) is electrically connected to the servo motor (4) through a controller; A recessed mounting groove (25) is provided at the deepest part of the bottom of the annular groove (17), a touch sensor (26) is fixedly connected to the inner side of the mounting groove (25), and the touch sensor (26) is electrically connected to the servo motor (4) via a controller; A positioning ring (27) is fixedly connected to the inner side of the bottom ring (5), and the positioning ring (27) extends to the top of the top ring (8), a pair of inwardly recessed adjustment grooves (28) are provided at the top of the top ring (8) and beside the positioning ring (27), a positioning plate (29) is slidably connected to the inner side of the adjustment groove (28), a plurality of positioning grooves (30) are equidistantly provided on the outer wall of the positioning ring (27) and at positions corresponding to the positioning plate (29), and the positioning plate (29) is plugged into the inner side of one of the positioning grooves (30), and a push plate (31) is fixedly connected to the top of the positioning plate (29); A pair of positioning springs (32) are fixedly connected between the inner side of the adjustment groove (28) and the side wall of the positioning plate (29); A height scale (37) is provided on the outer wall of the positioning ring (27) and located next to the positioning groove (30), and a plurality of compression springs (38) are fixedly connected between the top of the bottom ring (5) and the bottom of the top ring (8).

2. A high-precision laser welding machine according to claim 1, characterized in that: The top of the cylinder (6) is rotatably connected to a fixed plate (42), the bottom of the fixed plate (42) is fixedly connected to a support plate (44), the bottom of the support plate (44) passes through the ratchet block (15) and is fixedly connected to a four-fifths-shaped fixed ring (41), and the bottom of the fixed ring (41) abuts against the tops of three of the limit rings (19), the top of the tooling table (2) is fixedly connected to a pair of L-shaped rods (43), the top of the L-shaped rods (43) is fixedly connected to the top of the fixed plate (42), and the top of the fixed plate (42) is respectively fixedly connected to a red warning light (36) and a green warning light (39), and the red warning light (36) and the green warning light (39) are electrically connected to a uniform controller.

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