A cutting assembly for processing press riveting nuts

Abstract

The present invention relates to the technical field of cutting of press riveting nuts, and specifically relates to a cutting assembly for processing press riveting nuts, including a cutting device. A workpiece entry groove is provided on the side of the cutting device, a laser cutting assembly is provided inside the cutting device, and an auxiliary cutting assembly is provided below the laser cutting assembly; The beneficial effects are as follows: By providing an auxiliary cutting assembly below the laser cutting assembly in the present invention, after the cutting limit tube one, the cutting limit tube two and the surrounding ring are installed, a closed environment can be formed in the workpiece cutting area. The inert gas injection tube injects inert gas into the inner side of the closed movable ring to fill the cutting area between the cutting limit tube one and the cutting limit tube two. At the same time, the inert gas guiding ring inside the slag adsorption retaining ring guides the inert gas to the outside, so that the slag is carried out away from the cutting seam of the workpiece, which can effectively remove the slag generated during the cutting process, prevent the slag from reattaching to the cutting edge, and reduce the burrs and irregularities on the cutting edge.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting of press-fit nuts, and specifically to a cutting assembly for processing press-fit nuts. Background Art

[0002] A press-fit nut (also known as a press-in nut or press-fitting nut) is a nut fixed to a plate or workpiece by pressing or press-fitting. Such nuts are widely used in fields such as automobiles, household appliances, electronic devices, aerospace, etc. because they can provide reliable connections and high anti-vibration performance. They can be used for connecting body sheet metal parts to provide reliable fixing points, or for interior fixing, such as fixing interior parts like instrument panels and door panels. Cutting is performed during the processing of press-fit nuts to ensure that the size and shape of the nuts meet the design requirements, thereby ensuring their performance and reliability during installation and use. In the cutting process of press-fit nuts, laser cutting is generally selected, which can improve cutting accuracy and surface quality. However, the heat generated during laser cutting may cause local deformation of the press-fit nut material.

[0003] The existing Chinese patent document with the publication number CN116174939A proposes a laser cutting device with a protection component to solve the above technical problems by installing a protection structure on the laser cutting machine body. However, the press-fit nut material is a relatively small material, and the protection structure of the existing technology is more inclined to protect the operator, with little protection effect on the area near the cutting area of the press-fit nut, and the protection effect on the heat generated during laser cutting is not obvious.

[0004] Therefore, the present invention proposes a cutting assembly for processing press-fit nuts to solve the problem that the heat generated during laser cutting in the existing technology may cause local deformation of the press-fit nut material. By using a die assembly designed to cooperate with the cutting process of press-fit nuts and introducing an inert gas limiting and sealing structure to cool and protect both sides of the laser cutting area, it can not only reduce the influence of heat on the press-fit nut material but also prevent oxidation of the cutting edge, making the cutting edge smoother and neater. Summary of the Invention

[0005] The purpose of the present invention is to provide a cutting assembly for processing press-fit nuts to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A cutting assembly for processing press riveting nuts, including a cutting device, a workpiece inlet groove is arranged on the side of the cutting device, a laser cutting assembly is arranged inside the cutting device, an auxiliary cutting assembly is arranged below the laser cutting assembly, and a workpiece clamping and rotating assembly is arranged on one side of the auxiliary cutting assembly. The auxiliary cutting assembly includes a cutting limit tube one and a cutting limit tube two. The structures of the cutting limit tube one and the cutting limit tube two are the same. The cutting limit tube one and the cutting limit tube two are symmetrically arranged on both sides below the laser cutting assembly. A laser cutting positioning frame is arranged above the cutting limit tube one and the cutting limit tube two. The workpiece clamping and rotating assembly includes a rotating tube and a clamping tube.

[0007] Preferably, a surrounding ring is fixedly installed on the outer side of the cutting limit tube two, a sealing installation ring adapted to the surrounding ring is arranged on the outer side of the cutting limit tube one, a limit tube installation seat is arranged below the cutting limit tube one and the cutting limit tube two, and the cutting limit tube one and the cutting limit tube two are fixedly installed inside the limit tube installation seat through bolts.

[0008] Preferably, the laser cutting positioning frame is fixedly installed on the tops of the cutting limit tube one and the cutting limit tube two through bolts. The outer surface of the laser cutting positioning frame is clamped with the middle part of the surrounding ring. A through hole adapted to the laser cutting assembly is arranged in the middle of the laser cutting positioning frame, and a focusing convex lens is arranged below the through hole of the laser cutting positioning frame.

[0009] Preferably, a convex lens installation frame is slidably installed inside the lower part of the laser cutting positioning frame. The focusing convex lens is clamped and installed inside the convex lens installation frame. An adjusting screw bolt is movably installed on one side of the laser cutting positioning frame, and the inner wall of one side of the convex lens installation frame is threadedly connected with the outer surface of the adjusting screw bolt.

[0010] Preferably, a slag adsorption blocking ring is fixedly installed on one side of the cutting limit tube one close to the cutting limit tube two. An inert gas guiding ring is fixedly installed on the inner surface of the middle part of the slag adsorption blocking ring. A slag adsorption pad is arranged on the outer surface of the slag adsorption blocking ring.

[0011] Preferably, a cutting protection inner ring is arranged in the middle of the other side of the cutting limit tube one. One end of the outer surface of the cutting protection inner ring is fixedly installed with a closed rear groove plate. The outer surface of the closed rear groove plate is fixedly connected with the inner surface of the cutting limit tube one. A closed movable ring is movably installed between the closed rear groove plate and the slag adsorption blocking ring. Limit sealing rings adapted to the closed movable ring are arranged on the side surfaces of the closed rear groove plate and the slag adsorption blocking ring.

[0012] Preferably, heat dissipation fins are evenly distributed on the inner surface of the closed movable ring. A noble gas injection pipe is fixedly installed in the middle of the outer surface of the cutting protection inner ring. A jet branch pipe penetrating the closed rear slot plate is fixedly installed inside the noble gas injection pipe. An exhaust pipe is fixedly installed on the top inner wall of the cutting limit pipe I. An intake pipe is fixedly installed on the top inner wall of the noble gas injection pipe.

[0013] Preferably, a sealing ring is fixedly installed on one side of the inner surface of the cutting protection inner ring close to the closed movable ring. A stabilizing pad is fixedly installed on the other side of the inner surface of the cutting protection inner ring. A limiting and closing retaining frame is arranged on one side of the cutting limit pipe II. A closing circular plate is rotatably installed inside the limiting and closing retaining frame. A motor for driving the rotation of the closing circular plate is fixedly installed on the outer side of the limiting and closing retaining frame.

[0014] Preferably, a clamping piece adapted to the extrusion slot plate is movably installed on the outer side of the clamping pipe. An elastic support pad is fixedly installed between the inner surface of one end of the clamping piece and the outer surface of the clamping pipe. An anti-slip pad is fixedly installed on the inner surface of the other end of the clamping piece. An installation baffle is movably installed on the outer surface of the clamping pipe. A driving clamping telescopic rod for driving the movement of the installation baffle is fixedly installed on the top of the rotating pipe mounting seat.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] By arranging an auxiliary cutting assembly below the laser cutting assembly, after the cutting limit pipe I, the cutting limit pipe II and the surrounding ring are installed, a closed environment can be formed in the workpiece cutting area. The noble gas injection pipe injects noble gas into the inner side of the closed movable ring to fill the cutting area between the cutting limit pipe I and the cutting limit pipe II. At the same time, the noble gas guiding ring inside the slag adsorption retaining ring guides the noble gas outward, so that the slag is taken out away from the cut of the workpiece, which can effectively remove the slag generated during the cutting process, prevent the slag from reattaching to the cutting edge, reduce the burrs and irregularities on the cutting edge, improve the smoothness of the cutting edge, and effectively reduce the oxidation and heat influence on the cutting edge of the workpiece by the inflow and outflow of the noble gas, solving the problem that the heat generated during the laser cutting process in the prior art may cause local deformation of the material of the press riveting nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall internal structure of the present invention;

[0018] Figure 2 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 3 is a schematic diagram of the overall top view structure of the main components of the present invention;

[0020] Figure 4 Schematic diagram of the overall side structure of the main components of the present invention;

[0021] Figure 5 Schematic diagram of the overall structure of the auxiliary cutting assembly of the present invention;

[0022] Figure 6 Schematic diagram of the installation structure of the first cutting limit tube and the second cutting limit tube of the present invention;

[0023] Figure 7 Schematic diagram of the structure of the laser cutting positioning frame of the present invention;

[0024] Figure 8 Schematic diagram of the cross-sectional structure of the laser cutting positioning frame of the present invention;

[0025] Figure 9 Schematic diagram of the disassembly structure of the first cutting limit tube of the present invention;

[0026] Figure 10 Schematic diagram of one side structure of the first cutting limit tube after disassembly of the present invention;

[0027] Figure 11 Schematic diagram of the other side structure of the first cutting limit tube after disassembly of the present invention;

[0028] Figure 12 Schematic diagram of the partial cross-sectional structure inside the cutting limit tube of the present invention;

[0029] Figure 13 Schematic diagram of the overall cross-sectional structure inside the cutting limit tube of the present invention;

[0030] Figure 14 Schematic diagram of the overall structure of the workpiece clamping and rotating assembly of the present invention;

[0031] Figure 15 Schematic diagram of the structure of the clamping tube before clamping of the present invention;

[0032] Figure 16 Schematic diagram of the structure of the clamping tube after clamping of the present invention;

[0033] Figure 17 Schematic diagram of the cross-sectional structure of the clamping tube after clamping of the present invention.

[0034] In the figure: 1. Cutting device; 11. Workpiece inlet groove; 12. Laser cutting assembly; 2. Auxiliary cutting assembly; 21. First cutting limit tube; 211. Slag adsorption retaining ring; 212. Inert gas guiding ring; 213. Slag adsorption pad; 214. Sealing movable ring; 2141. Heat dissipation fin; 215. Inner cutting protection ring; 2151. Enclosed rear groove plate; 2152. Stabilizing pad; 2153. Sealing ring; 216. Inert gas injection tube; 22. Second cutting limit tube; 23. Enclosing ring; 24. Limit tube mounting seat; 25. Limit closing retaining frame; 251. Enclosed circular plate; 26. Laser cutting positioning frame; 261. Focusing convex lens; 262. Convex lens mounting frame; 263. Adjusting screw bolt; 3. Workpiece clamping and rotating assembly; 31. Rotating tube; 311. Extrusion groove plate; 32. Rotating tube mounting seat; 33. Driving motor; 34. Clamping tube; 341. Clamping piece; 3411. Anti-slip pad; 342. Elastic support pad; 35. Mounting baffle; 36. Driving clamping telescopic rod. Detailed implementation mode

[0035] In order to clearly and completely describe the objectives, technical solutions and advantages of the present invention, the following further elaborates on the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, rather than all, of the embodiments of the present invention, and are merely used to explain the embodiments of the present invention, rather than to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0036] Example 1, please refer to Figure 1 - Figure 17, the present invention provides a technical solution: a cutting assembly for processing rivet nuts, including a cutting device 1. A workpiece inlet groove 11 is provided on the side of the cutting device 1. A laser cutting assembly 12 is provided inside the cutting device 1. An auxiliary cutting assembly 2 is provided below the laser cutting assembly 12. A workpiece clamping and rotating assembly 3 is provided on one side of the auxiliary cutting assembly 2. The auxiliary cutting assembly 2 includes a first cutting limit tube 21 and a second cutting limit tube 22. The structures of the first cutting limit tube 21 and the second cutting limit tube 22 are the same. The first cutting limit tube 21 and the second cutting limit tube 22 are symmetrically arranged on both sides below the laser cutting assembly 12. A laser cutting positioning frame 26 is provided above the first cutting limit tube 21 and the second cutting limit tube 22. The workpiece clamping and rotating assembly 3 includes a rotating tube 31 and a clamping tube 34. A surrounding ring 23 is fixedly installed on the outer side of the second cutting limit tube 22. A sealing mounting ring adapted to the surrounding ring 23 is provided on the outer side of the first cutting limit tube 21. A limit tube mounting seat 24 is provided below the first cutting limit tube 21 and the second cutting limit tube 22. The first cutting limit tube 21 and the second cutting limit tube 22 are fixedly installed inside the limit tube mounting seat 24 by bolts. The laser cutting positioning frame 26 is fixedly installed on the tops of the first cutting limit tube 21 and the second cutting limit tube 22 by bolts. The outer surface of the laser cutting positioning frame 26 is clamped with the middle part of the surrounding ring 23. A through hole adapted to the laser cutting assembly 12 is provided in the middle of the laser cutting positioning frame 26. A focusing convex lens 261 is provided below the through hole of the laser cutting positioning frame 26. A convex lens mounting frame 262 is slidably installed inside the lower part of the laser cutting positioning frame 26. The focusing convex lens 261 is clamped and installed inside the convex lens mounting frame 262. An adjusting screw bolt 263 is movably installed on one side of the laser cutting positioning frame 26. The inner wall of one side of the convex lens mounting frame 262 is threadedly connected with the outer surface of the adjusting screw bolt 263;In this embodiment, the limit tube mounting seat 24 is fixedly installed on the operating platform inside the cutting device 1 by bolts. The workpiece enters through the workpiece inlet groove 11, passes through the rotating tube 31, the first cutting limit tube 21, and the second cutting limit tube 22. The workpiece is clamped and driven to rotate by the workpiece clamping and rotating assembly 3. The first cutting limit tube 21 and the second cutting limit tube 22 play a role in limiting and protecting the cutting area of the workpiece. The laser cutting positioning frame 26 facilitates the positioning of the laser beam of the laser cutting assembly 12, and at the same time plays a role in connecting the first cutting limit tube 21 and the second cutting limit tube 22. The laser head of the laser cutting assembly 12 is aligned with the laser cutting positioning frame 26 to emit a laser beam. The rotating workpiece is integrally cut into the length required for the rivet nut. After the first cutting limit tube 21 and the second cutting limit tube 22 are installed, the surrounding ring 23 and the laser cutting positioning frame 26 completely surround the cutting area of the workpiece to form a sealed cutting area, which is convenient for filling the cutting area with inert gas later to form an oxygen-free space, avoiding the formation of an oxide layer on the cutting edge, improving the effect of subsequent processing and surface treatment. The inert gas also plays a certain cooling role, reducing the width of the heat-affected zone of the workpiece and maintaining the microstructure and properties of the material. In addition, while the laser cutting positioning frame 26 facilitates the positioning of the laser cutting assembly 12, the focusing convex lens 261 provided below the laser cutting positioning frame 26 also has the function of focusing the laser beam, playing a role in locally concentrating energy to prevent energy diffusion, reducing the width of the heat-affected zone, improving the cutting accuracy and dimensional stability. The focused laser beam has a high energy density and can quickly melt or evaporate the material, improving the cutting speed. The focused laser beam can also reduce the burrs and irregularities on the cutting edge and improve the smoothness of the cutting edge. Moreover, by adjusting the threaded bolt 263, the height of the convex lens mounting frame 262 can be finely adjusted. The convex lens mounting frame 262 mainly plays a role in encapsulating the focusing convex lens 261, so that the height of the focusing convex lens 261 from the workpiece can be adjusted, and the focal point can be adjusted according to the thickness of the workpiece tube wall, enabling the laser beam to better adjust the cutting depth according to the material and making the cutting edge clean and neat.;

[0037] Embodiment 2. On the basis of Embodiment 1, a slag adsorption retaining ring 211 is fixedly installed on the side of the cutting limiting tube 1 close to the cutting limiting tube 22. An inert gas guiding ring 212 is fixedly installed on the inner surface of the middle part of the slag adsorption retaining ring 211. A slag adsorption pad 213 is arranged on the outer surface of the slag adsorption retaining ring 211. A cutting protection inner ring 215 is arranged in the middle of the other side of the cutting limiting tube 1. A closed rear groove plate 2151 is fixedly installed on the outer surface of one end of the cutting protection inner ring 215. The outer surface of the closed rear groove plate 2151 is fixedly connected with the inner surface of the cutting limiting tube 1. A closed movable ring 214 is movably installed between the closed rear groove plate 2151 and the slag adsorption retaining ring 211. Limiting sealing rings adapted to the closed movable ring 214 are arranged on the side surfaces of the closed rear groove plate 2151 and the slag adsorption retaining ring 211. Heat dissipation fins 2141 are evenly distributed on the inner surface of the closed movable ring 214. An inert gas injection pipe 216 is fixedly installed in the middle of the outer surface of the cutting protection inner ring 215. A jet branch pipe penetrating the closed rear groove plate 2151 is fixedly installed inside the inert gas injection pipe 216. An exhaust pipe is fixedly installed on the top inner wall of the cutting limiting tube 1. An intake pipe is fixedly installed on the top inner wall of the inert gas injection pipe 216. A sealing ring 2153 is fixedly installed on the inner surface of the cutting protection inner ring 215 close to the closed movable ring 214. A stabilizing pad 2152 is fixedly installed on the other side of the inner surface of the cutting protection inner ring 215. A limiting closed retaining frame 25 is arranged on one side of the cutting limiting tube 22. A closed circular plate 251 is rotatably installed inside the limiting closed retaining frame 25. A motor for driving the rotation of the closed circular plate 251 is fixedly installed on the outer side of the limiting closed retaining frame 25;In this embodiment, the cutting limiting tube 1 (21) and the cutting limiting tube 2 (22) are fixed on the limiting tube mounting seat (24) by bolts and can be disassembled for maintenance. The cutting limiting tube 1 (21) and the cutting limiting tube 2 (22) mainly limit and protect the cutting area of the workpiece. After the cutting limiting tube 1 (21), the cutting limiting tube 2 (22) and the surrounding ring (23) are installed, a closed environment can be formed in the workpiece cutting area. Since the structures of the cutting limiting tube 1 (21) and the cutting limiting tube 2 (22) are the same, taking the cutting limiting tube 1 (21) as an example in this embodiment, first, the exhaust pipe at the top of the cutting limiting tube 1 (21) needs to be connected to the exhaust equipment, and the inlet pipe of the inert gas injection tube (216) needs to be connected to the inert gas supply pipe. The workpiece passes through the cutting protection inner ring (215). The stabilizing pad (2152) is an elastic pad that plays a buffering role. The sealing ring (2153) seals the vicinity of the workpiece cut. After sealing, the groove plate (2151) mainly plays a role in sealing the outside of the cutting limiting tube 1 (21). The slag adsorption retaining ring (211) seals the inside of the cutting limiting tube 1 (21). The sealing movable ring (214) can rotate inside the closed cavity of the cutting limiting tube 1 (21), and at the same time divides the internal cavity of the cutting limiting tube 1 (21) into an inert gas inlet channel and an exhaust channel. The inert gas injection tube (216) injects inert gas into the inner side of the sealing movable ring (214) to fill the cutting area between the cutting limiting tube 1 (21) and the cutting limiting tube 2 (22). At the same time, as the gas is injected, the heat dissipation fins (2141) on the inner side of the sealing movable ring (214) may be blown and rotated, accelerating the cooling effect on the cutting area. At the same time, the inert gas guiding ring (212) inside the slag adsorption retaining ring (211) guides the inert gas to the outside, so that the slag is carried out away from the cut of the workpiece, which can effectively remove the slag generated during cutting, prevent the slag from reattaching to the cutting edge, reduce the burrs and irregularities on the cutting edge, and improve the smoothness of the cutting edge. The inert gas is sucked out through the exhaust pipe above the cutting limiting tube 1 (21), so that the inert gas carrying the slag is gathered on the inclined surface of the slag adsorption retaining ring (211). Through holes are provided on the inclined surface of the slag adsorption retaining ring (211), and at the same time, a slag adsorption pad (213) made of a breathable material is laid to intercept the slag. Only the slag adsorption pad (213) needs to be disassembled and replaced later. By the inflow and outflow of the inert gas, the oxidation and thermal influence of the workpiece cutting edge can be effectively reduced, and the cutting accuracy and dimensional stability can be improved.

[0038] Embodiment 3. On the basis of Embodiment 2, a rotary tube mounting seat 32 is arranged outside the rotary tube 31. A driving motor 33 for driving the rotary tube 31 to rotate is arranged on one side of the rotary tube mounting seat 32. Extrusion groove plates 311 are evenly distributed on the inner surface of the rotary tube 31. Clamping pieces 341 adapted to the extrusion groove plates 311 are movably mounted on the outer side of the clamping tube 34. An elastic support pad 342 is fixedly mounted between the inner surface of one end of the clamping piece 341 and the outer surface of the clamping tube 34. An anti-slip pad 3411 is fixedly mounted on the inner surface of the other end of the clamping piece 341. A mounting baffle 35 is movably mounted on the outer surface of the clamping tube 34. A driving clamping telescopic rod 36 for driving the mounting baffle 35 to move is fixedly mounted on the top of the rotary tube mounting seat 32; in this embodiment, the rotary tube mounting seat 32 mainly serves to mount the rotary tube 31. The workpiece passes through between the clamping tube 34 and the rotary tube 31. The driving clamping telescopic rod 36 works to drive the mounting baffle 35 and the clamping tube 34 to approach the rotary tube 31, so that the extrusion groove plates 311 are clamped into the outer side of the clamping pieces 341 and the anti-slip pad 3411 clamps the workpiece. At this time, the driving motor 33 drives the rotary tube 31 to rotate, and the clamping tube 34 is also forced to clamp the workpiece and rotate, so that the workpiece can be circumferentially cut. After the cutting is completed, the closing circular plate 251 inside the limiting and closing bracket 25 rotates and contracts, so that one side of the cutting limiting tube II 22 is exposed. At this time, the driving clamping telescopic rod 36 pushes the mounting baffle 35 to drive the clamping tube 34 to leave the limit of the extrusion groove plates 311. One end of the anti-slip pad 3411 warps up under the elasticity of the elastic support pad 342, so that the workpiece is relaxed. The workpiece continues to be pushed, and the cut end will be discharged. Then, the closing circular plate 251 closes one side of the cutting limiting tube II 22, and the next cutting is continued.

[0039] Embodiment 4. On the basis of Embodiment 3, this embodiment also proposes a specific auxiliary cutting method for a cutting component used in the processing of rivet nuts, including the following steps: Step 1, workpiece feeding. The workpiece enters through the workpiece inlet groove 11, passes through the rotating tube 31, the cutting limit tube 1 21 and the cutting limit tube 2 22, and the workpiece is clamped by the clamping tube 34 and driven to rotate by the rotating tube 31; Step 2, cutting. The laser beam of the laser cutting component 12 is positioned at the through hole of the laser cutting positioning frame 26, and the inert gas injection tube 216 injects inert gas into the inner side of the closed movable ring 214 to fill the cutting area between the cutting limit tube 1 21 and the cutting limit tube 2 22. At the same time, the inert gas guiding ring 212 inside the slag adsorption retaining ring 211 guides the inert gas outward, so that the slag is carried out away from the cutting seam of the workpiece and is gathered on the inclined surface of the slag adsorption retaining ring 211, which can effectively remove the slag generated during the cutting process; Step 3, stop cutting and carry out material discharging. The closed circular plate 251 inside the limit closing retaining frame 25 rotates and contracts, so that one side of the cutting limit tube 2 22 is exposed. At this time, the driving clamping telescopic rod 36 is pushed to drive the mounting baffle 35 to drive the clamping tube 34 away from the limit of the extrusion groove plate 311. One end of the anti-slip pad 3411 of the clamping piece 341 warps up under the elasticity of the elastic support pad 342, so that the workpiece is relaxed. The workpiece continues to be pushed, and the cut end will be discharged. Then, the closed circular plate 251 rotates to close one side of the cutting limit tube 2 22, and the next cutting continues.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting assembly for processing a self-clinching nut, comprising a cutting device (1), a workpiece entry slot (11) being arranged on a side of the cutting device (1), and a laser cutting assembly (12) being arranged inside the cutting device (1), characterized in that: An auxiliary cutting assembly (2) is arranged below the laser cutting assembly (12); a workpiece clamping rotating assembly (3) is arranged on one side of the auxiliary cutting assembly (2); the auxiliary cutting assembly (2) comprises a first cutting limit tube (21) and a second cutting limit tube (22); the first cutting limit tube (21) and the second cutting limit tube (22) have the same structure; the first cutting limit tube (21) and the second cutting limit tube (22) are symmetrically arranged on both sides below the laser cutting assembly (12); the first cutting limit tube (21) and the second cutting limit tube (22) are symmetrically arranged on both sides below the laser cutting assembly (12); ) and a laser cutting positioning frame (26) are arranged above the cutting limit tube 2 (22); the workpiece clamping rotating assembly (3) comprises a rotating tube (31) and a clamping tube (34); a slag adsorption retaining ring (211) is fixedly mounted on a side of the cutting limit tube 1 (21) close to the cutting limit tube 2 (22); an inert gas guide ring (212) is fixedly mounted on the inner surface of the middle part of the slag adsorption retaining ring (211); a slag adsorption pad (213) is arranged on the outer surface of the slag adsorption retaining ring (211); A cutting protection inner ring (215) is provided in the middle of the other side of the cutting limit tube (21), a closed rear groove plate (2151) is fixedly installed on the outer surface of one end of the cutting protection inner ring (215), the outer surface of the closed rear groove plate (2151) is fixedly connected to the inner surface of the cutting limit tube (21), a closed movable ring (214) is movably installed between the closed rear groove plate (2151) and the slag adsorption baffle ring (211), and the closed rear groove plate (2151) and the slag adsorption baffle ring (211) are fixedly connected to the inner surface of the cutting limit tube (21). A limiting sealing ring matched with the closed movable ring (214) is arranged on the side surface, the laser cutting positioning frame (26) is fixedly installed on the top of the cutting limiting tube 1 (21) and the cutting limiting tube 2 (22) by bolts, the outer surface of the laser cutting positioning frame (26) is clamped with the middle part of the surrounding ring (23), the middle part of the laser cutting positioning frame (26) is provided with a through hole matched with the laser cutting component (12), and a focusing convex mirror (261) is arranged below the through hole of the laser cutting positioning frame (26).

2. A cutting assembly for processing self-clinching nuts according to claim 1, characterized in that: An encircling ring (23) is fixedly mounted on the outer side of the second cutting limit tube (22); a sealing mounting ring matched with the encircling ring (23) is arranged on the outer side of the first cutting limit tube (21); a limit tube mounting seat (24) is arranged below the first cutting limit tube (21) and the second cutting limit tube (22); the first cutting limit tube (21) and the second cutting limit tube (22) are fixedly mounted inside the limit tube mounting seat (24) by bolts.

3. A cutting assembly for processing self-clinching nuts according to claim 1, characterized in that: A convex mirror mounting frame (262) is slidably mounted inside the lower portion of the laser cutting positioning frame (26); the focusing convex mirror (261) is snap-fitted inside the convex mirror mounting frame (262); an adjusting threaded bolt (263) is movably mounted on one side of the laser cutting positioning frame (26); an inner wall of one side of the convex mirror mounting frame (262) is threadedly connected to an outer surface of the adjusting threaded bolt (263).

4. A cutting assembly for processing self-clinching nuts according to claim 1, characterized in that: The inner surface of the closed movable ring (214) is evenly distributed with heat dissipation fins (2141); an inert gas injection pipe (216) is fixedly installed in the middle of the outer surface of the cutting protection inner ring (215); an injection branch pipe that penetrates the closed rear slot plate (2151) is fixedly installed on the inner side of the inert gas injection pipe (216); an exhaust pipe is fixedly installed on the top inner wall of the cutting limit pipe (21); and an air inlet pipe is fixedly installed on the top inner wall of the inert gas injection pipe (216).

5. A cutting assembly for processing self-clinching nuts according to claim 4, characterized in that: A sealing ring (2153) is fixedly mounted on one side of the inner surface of the cutting protection inner ring (215) close to the closed movable ring (214), and a stabilizing pad (2152) is fixedly mounted on the other side of the inner surface of the cutting protection inner ring (215). A limited closed retaining frame (25) is provided on one side of the second cutting limit tube (22), a closed circular plate (251) is rotatably mounted on the inner side of the limited closed retaining frame (25), and a motor for driving the closed circular plate (251) to rotate is fixedly mounted on the outer side of the limited closed retaining frame (25).

6. The cutting assembly for processing self-clinching nuts according to claim 1, characterized in that: A rotating tube mounting seat (32) is arranged outside the rotating tube (31), a driving motor (33) for driving the rotating tube (31) to rotate is arranged on one side of the rotating tube mounting seat (32), and extrusion groove plates (311) are evenly distributed on the inner surface of the rotating tube (31).

7. A cutting assembly for processing self-clinching nuts according to claim 6, characterized in that: A clamping sheet (341) adapted to the extrusion groove plate (311) is movably mounted on the outer side of the clamping tube (34); an elastic support pad (342) is fixedly mounted between the inner surface of one end of the clamping sheet (341) and the outer surface of the clamping tube (34); an anti-slip pad (3411) is fixedly mounted on the inner surface of the other end of the clamping sheet (341); a mounting baffle (35) is movably mounted on the outer surface of the clamping tube (34); and a driving clamping telescopic rod (36) for driving the mounting baffle (35) to move is fixedly mounted on the top of the rotating tube mounting seat (32).

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