Cutting assembly for pressing rivet nut machining

Abstract

The invention relates to the technical field of pressing rivet nut cutting, in particular to a cutting assembly for pressing rivet nut machining. The cutting assembly comprises cutting equipment, a workpiece entering groove is formed in the side face of the cutting equipment, a laser cutting assembly is arranged in the cutting equipment, and an auxiliary cutting assembly is arranged below the laser cutting assembly; the laser cutting device has the beneficial effects that the auxiliary cutting assembly is arranged below the laser cutting assembly, and after a first cutting limiting pipe, a second cutting limiting pipe and a surrounding ring are installed, a closed environment can be formed in a workpiece cutting area; the inert gas injection pipe injects inert gas into the inner side of the closed movable ring so that a cutting area between the first cutting limiting pipe and the second cutting limiting pipe can be filled with the inert gas, meanwhile, the inert gas guide ring on the inner side of the slag adsorption baffle ring guides the inert gas to the outer side, and the slag is brought out of a kerf away from a workpiece. Slag generated in the cutting process can be effectively removed, the slag is prevented from being attached to the cutting edge again, and burrs and irregularity of the cutting edge are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of self-clinching nut cutting, in particular to a cutting assembly for self-clinching nut processing. Background Art

[0002] A self-clinching nut (also called a press-in nut or a press-fit nut) is a nut that is fixed to a sheet or workpiece by pressing or press-fitting. This nut is widely used in the fields of automobiles, home appliances, electronic equipment, aerospace, etc., because it can provide reliable connection and high vibration resistance. It can be used to connect body sheet metal parts to provide a reliable fixing point, or to fix interior decoration, such as dashboards and door panels. Self-clinching nuts are cut during the processing process to ensure that the size and shape of the nut meet the design requirements, thereby ensuring its performance and reliability during installation and use. Laser cutting is generally selected during the cutting process of self-clinching nuts, which can improve cutting accuracy and surface quality, but the heat generated during laser cutting may cause local deformation of the self-clinching nut material.

[0003] The existing Chinese patent document with publication number CN116174939A proposes a laser cutting device with a protective component, which solves the above technical problems by installing a protective structure on the laser cutting machine body. However, the material of the rivet nut is a relatively small material, and the protective structure of the prior art is more inclined to protect the operator. The protective effect near the cutting area of ​​the rivet nut is very small, and the protective effect against the heat generated during the laser cutting process is not obvious.

[0004] Therefore, the present invention proposes a cutting assembly for processing self-clinching nuts to solve the problem in the prior art that the heat generated during the laser cutting process may cause local deformation of the self-clinching nut material. A mold assembly designed to cooperate with the self-clinching nut cutting process is adopted, and an inert gas limiting and closed structure is introduced to cool down and protect both sides of the laser cutting area. This can not only reduce the impact of heat on the self-clinching nut material but also prevent oxidation of the cut edge, making the cut edge smoother and neater. Summary of the invention

[0005] The object of the present invention is to provide a cutting assembly for processing rivet nuts to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cutting assembly for processing rivet nuts, comprising a cutting device, a workpiece entry 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, a workpiece clamping and rotating assembly is arranged on one side of the auxiliary cutting assembly, the auxiliary cutting assembly comprises a cutting limit tube 1 and a cutting limit tube 2, the cutting limit tube 1 and the cutting limit tube 2 have the same structure, the cutting limit tube 1 and the cutting limit tube 2 are symmetrically arranged on both sides below the laser cutting assembly, a laser cutting positioning frame is arranged above the cutting limit tube 1 and the cutting limit tube 2, and the workpiece clamping and rotating assembly comprises a rotating tube and a clamping tube.

[0007] Preferably, a surrounding ring is fixedly installed on the outer side of the cutting limit tube 2, and a sealing mounting ring matched with the surrounding ring is arranged on the outer side of the cutting limit tube 1, and a limiting tube mounting seat is arranged below the cutting limit tube 1 and the cutting limit tube 2, and the cutting limit tube 1 and the cutting limit tube 2 are fixedly installed inside the limiting tube mounting seat by bolts.

[0008] Preferably, the laser cutting positioning frame is fixedly installed on the top of cutting limit tube 1 and cutting limit tube 2 by bolts, the outer surface of the laser cutting positioning frame is clamped with the middle part of the surrounding ring, the middle part of the laser cutting positioning frame is provided with a through hole compatible with the laser cutting component, and a focusing convex mirror is provided below the through hole of the laser cutting positioning frame.

[0009] Preferably, a convex mirror mounting frame is slidably installed inside the lower part of the laser cutting positioning frame, the focusing convex mirror is snap-fitted inside the convex mirror mounting frame, an adjustment threaded bolt is movably installed on one side of the laser cutting positioning frame, and the inner wall of one side of the convex mirror mounting frame is threadedly connected to the outer surface of the adjustment threaded bolt.

[0010] Preferably, a slag adsorption baffle ring is fixedly installed on one side of the cutting limit tube 1 close to the cutting limit tube 2, an inert gas guide ring is fixedly installed on the middle inner surface of the slag adsorption baffle ring, and a slag adsorption pad is provided on the outer surface of the slag adsorption baffle ring.

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

[0012] Preferably, the inner surface of the closed movable ring is evenly distributed with heat dissipation fins, an inert gas injection pipe is fixedly installed in the middle of the outer surface of the cutting protection inner ring, a jet branch pipe that passes through the closed rear slot plate is fixedly installed on the inner side of the inert gas injection pipe, an exhaust pipe is fixedly installed on the top inner wall of the cutting limit tube, and an air inlet pipe is fixedly installed on the top inner wall of the inert 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, and a stabilizing pad is fixedly installed on the other side of the inner surface of the cutting protection inner ring. A limited closed baffle is provided on one side of the cutting limit tube 2, and a closed circular plate is rotatably installed on the inner side of the limited closed baffle, and a motor for driving the closed circular plate to rotate is fixedly installed on the outer side of the limited closed baffle.

[0014] Preferably, a clamping plate adapted to the extrusion groove plate is movably installed on the outer side of the clamping tube, an elastic support pad is fixedly installed between the inner surface of one end of the clamping plate and the outer surface of the clamping tube, an anti-slip pad is fixedly installed on the inner surface of the other end of the clamping plate, a mounting baffle is movably installed on the outer surface of the clamping tube, and a driving clamping telescopic rod for driving the mounting baffle to move is fixedly installed on the top of the rotating tube mounting seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges an auxiliary cutting component below the laser cutting component. After the cutting limit tube 1, the cutting limit tube 2 and the surrounding ring are installed, a closed environment can be formed in the workpiece cutting area. The inert gas injection pipe injects inert gas into the inner side of the closed movable circle to fill the cutting area between the cutting limit tube 1 and the cutting limit tube 2. At the same time, the inert gas guide ring on the inner side of the slag adsorption retaining ring guides the inert gas to the outside, so that the slag is taken out and away from the cutting seam of the workpiece. The slag generated in the cutting process can be effectively removed, and the slag can be prevented from re-attaching to the cutting edge, burrs and irregularities on the cutting edge can be reduced, and the smoothness of the cutting edge can be improved. The oxidation and thermal impact of the cutting edge of the workpiece can be effectively reduced by the discharge and outflow of the inert gas, thereby solving the problem in the prior art that the heat generated in the laser cutting process may cause local deformation of the rivet nut material. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the overall internal structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of the overall top view of the main components of the present invention; Figure 4 It is a schematic diagram of the overall side structure of the main components of the present invention; Figure 5It is a schematic diagram of the overall structure of the auxiliary cutting assembly of the present invention; Figure 6 It is a schematic diagram of the installation structure of the cutting limit tube 1 and the cutting limit tube 2 of the present invention; Figure 7 This is a schematic diagram of the structure of the laser cutting positioning frame of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the laser cutting positioning frame of the present invention; Fig. 9 This is a schematic diagram of a disassembly structure of a cutting limit tube according to the present invention; Fig.10 This is a schematic diagram of the structure of one side of the cutting limit tube of the present invention after being disassembled; Fig.11 This is a schematic diagram of the structure of the other side of the disassembled cutting limit tube of the present invention; Fig.12 It is a schematic diagram of the partial cross-sectional structure inside the cutting limit tube of the present invention; Fig.13 It is a schematic diagram of the overall cross-sectional structure of the interior of the cutting limit tube of the present invention; Fig.14 It is a schematic diagram of the overall structure of the workpiece clamping and rotating assembly of the present invention; Fig.15 It is a schematic diagram of the structure of the clamping tube before clamping of the present invention; Fig.16 This is a schematic diagram of the structure of the clamping tube after clamping of the present invention; Fig.17 It is a schematic diagram of the cross-sectional structure of the clamping tube of the present invention after clamping.

[0016] In the figure: 1. cutting equipment; 11. workpiece entering the slot; 12. laser cutting assembly; 2. auxiliary cutting assembly; 21. cutting limit tube 1; 211. slag adsorption baffle ring; 212. inert gas guide ring; 213. slag adsorption pad; 214. closed movable ring; 2141. heat dissipation fin; 215. cutting protection inner ring; 2151. closed rear slot plate; 2152. stabilizing pad; 2153. sealing ring; 216. inert gas injection tube; 22. cutting limit tube 2; 23. surrounding Ring; 24, limit tube mounting seat; 25, limit closed baffle; 251, closed circular plate; 26, laser cutting positioning frame; 261, focusing convex mirror; 262, convex mirror mounting frame; 263, adjustment threaded bolt; 3, workpiece clamping rotating assembly; 31, rotating tube; 311, extrusion groove plate; 32, rotating tube mounting seat; 33, driving motor; 34, clamping tube; 341, clamping plate; 3411, anti-slip pad; 342, elastic support pad; 35, mounting baffle; 36, driving clamping telescopic rod. DETAILED DESCRIPTION

[0017] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] For example, see Figure 1 - Fig.17The present invention provides a technical solution: a cutting assembly for processing a rivet nut, comprising a cutting device 1, a workpiece entry groove 11 is arranged on the side of the cutting device 1, a laser cutting assembly 12 is arranged inside the cutting device 1, an auxiliary cutting assembly 2 is arranged below the laser cutting assembly 12, a workpiece clamping and rotating assembly 3 is arranged on one side of the auxiliary cutting assembly 2, the auxiliary cutting assembly 2 comprises a cutting limit tube 1 21 and a cutting limit tube 2 22, the cutting limit tube 1 21 and the cutting limit tube 2 22 have the same structure, the cutting limit tube 1 21 and the cutting limit tube 2 22 are symmetrically arranged on both sides below the laser cutting assembly 12, a laser cutting positioning frame 26 is arranged above the cutting limit tube 1 21 and the cutting limit tube 2 22, the workpiece clamping and rotating assembly 3 comprises a rotating tube 31 and a clamping tube 34, an outer side of the cutting limit tube 2 22 is fixedly installed with an encircling ring 23, and the outer side of the cutting limit tube 1 21 is provided with a support adapted to the encircling ring 23 A sealing mounting ring, a limiting tube mounting seat 24 is arranged below the cutting limiting tube 1 21 and the cutting limiting tube 22, the cutting limiting tube 1 21 and the cutting limiting tube 22 are fixedly installed inside the limiting tube mounting seat 24 by bolts, a laser cutting positioning frame 26 is fixedly installed on the top of the cutting limiting tube 1 21 and the cutting limiting 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, the middle part of the laser cutting positioning frame 26 is provided with a through hole adapted to the laser cutting assembly 12, a focusing convex mirror 261 is arranged below the through hole of the laser cutting positioning frame 26, a convex mirror mounting frame 262 is slidably installed inside the lower part of the laser cutting positioning frame 26, the focusing convex mirror 261 is clamped and installed inside the convex mirror mounting frame 262, an adjusting threaded bolt 263 is movably installed on one side of the laser cutting positioning frame 26, and an inner wall of one side of the convex mirror mounting frame 262 is threadedly connected with the outer surface of the adjusting threaded bolt 263;In this embodiment, the limit tube mounting seat 24 is fixedly installed on the operating platform inside the cutting equipment 1 by bolts. The workpiece enters through the workpiece entry 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 workpiece clamping rotating assembly 3 and driven to rotate. The cutting limit tube 1 21 and the cutting limit tube 2 22 limit 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 also connects the cutting limit tube 1 21 and the cutting limit tube 2 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 workpiece rotates and is cut as a whole into the length required by the riveted nut. After the cutting limit tube 1 21 and the cutting limit tube 2 22 are installed, the surrounding ring 23 and the laser cutting positioning frame 26 completely surround the workpiece cutting area to form a closed cutting area, which is convenient for the later inert gas to fill the cutting area to form an oxidation-free space, avoid the formation of an oxide layer on the cutting edge, and improve subsequent processing and surface treatment. The inert gas also plays a certain cooling role, reduces the width of the heat-affected zone of the workpiece, and maintains the microstructure and performance of the material. In addition, the laser cutting positioning frame 26 not only facilitates the positioning of the laser cutting assembly 12, but also the focusing convex mirror 261 arranged below the laser cutting positioning frame 26 also has the function of focusing the laser beam, plays the role of local energy collection to prevent energy diffusion, reduces the width of the heat-affected zone, and improves the cutting accuracy and dimensional stability. The focused laser beam has a high energy density, which can quickly melt or evaporate the material and increase 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, the height of the convex mirror mounting frame 262 can be fine-tuned by adjusting the threaded bolt 263. The convex mirror mounting frame 262 mainly plays the role of encapsulating the focusing convex mirror 261, so that the height of the focusing convex mirror 261 from the workpiece can be adjusted, and the focus can be adjusted according to the thickness of the workpiece tube wall, so that the laser beam can better adjust the cutting depth according to the material, and the cutting mouth is clean and neat. ;

[0019] Embodiment 2: On the basis of embodiment 1, a slag adsorption baffle ring 211 is fixedly installed on one side of the cutting limit tube 1 21 close to the cutting limit tube 2 22, an inert gas guide ring 212 is fixedly installed on the inner surface of the middle part of the slag adsorption baffle ring 211, a slag adsorption pad 213 is provided on the outer surface of the slag adsorption baffle ring 211, a cutting protection inner ring 215 is provided in the middle of the other side of the cutting limit tube 1 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 1 21, a closed movable ring 214 is movably installed between the closed rear groove plate 2151 and the slag adsorption baffle ring 211, and a limiting sealing ring matched with the closed movable ring 214 is provided on the side surfaces of the closed rear groove plate 2151 and the slag adsorption baffle ring 211. The inner surface of the 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, and an injection branch pipe penetrating 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 1 21, and 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 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 installed on the other side of the inner surface of the cutting protection inner ring 215. A limited closed baffle 25 is provided on one side of the cutting limit pipe 22, and a closed circular plate 251 is rotatably installed on the inner side of the limited closed baffle 25, and a motor for driving the closed circular plate 251 to rotate is fixedly installed on the outer side of the limited closed baffle 25;In this embodiment, the cutting limit tube 1 21 and the cutting limit tube 22 are fixed to the limit tube mounting seat 24 by bolts and can be disassembled for maintenance. The cutting limit tube 1 21 and the cutting limit tube 22 mainly limit and protect the cutting area of ​​the workpiece. After the cutting limit tube 1 21, the cutting limit tube 22 and the surrounding ring 23 are installed, a closed environment can be formed in the workpiece cutting area. Because the cutting limit tube 1 21 and the cutting limit tube 22 have the same structure, this embodiment takes the cutting limit tube 1 21 as an example. First, the exhaust pipe on the top of the cutting limit tube 1 21 needs to be connected with the exhaust device The inlet pipe of the inert gas injection pipe 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 acts as a buffer. The sealing ring 2153 seals the vicinity of the workpiece incision. The closed rear groove plate 2151 mainly plays the role of sealing the outer side of the cutting limit tube 21. The slag adsorption retaining ring 211 seals the inner side of the cutting limit tube 21. The closed movable ring 214 can rotate inside the closed cavity of the cutting limit tube 21, and at the same time, the inert gas enters the cavity partition of the cutting limit tube 21. The inert gas injection pipe 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 22. At the same time, as the gas is injected, the heat dissipation fins 2141 inside the closed movable ring 214 are blown and may rotate, thereby accelerating the cooling effect on the cutting area. At the same time, the inert gas guide ring 212 inside the slag adsorption baffle ring 211 guides the inert gas to the outside, so that the slag is taken out of the cutting seam away from the workpiece, which can effectively remove the slag generated during the cutting process and prevent the slag from re-attaching to the cutting edge. , reduce burrs and irregularities on the cutting edge, improve the smoothness of the cutting edge, suck out the inert gas through the exhaust pipe above the cutting limit tube 21, so that the inert gas carrying the slag is gathered on the inclined surface of the slag adsorption baffle ring 211, and a through hole is opened on the inclined surface of the slag adsorption baffle ring 211. At the same time, the slag adsorption pad 213 is laid as a breathable material to intercept the slag. Later, only the slag adsorption pad 213 needs to be disassembled and replaced. The inert gas discharge and outflow can effectively reduce the oxidation and thermal effects of the cutting edge of the workpiece, and improve the cutting accuracy and dimensional stability. ;

[0020] Embodiment 3, on the basis of embodiment 2, a rotating tube mounting seat 32 is provided on the outside of the rotating tube 31, and a driving motor 33 for driving the rotating tube 31 to rotate is provided 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, and a clamping piece 341 adapted to the extrusion groove plate 311 is movably installed on the outer side of the clamping tube 34, and an elastic support pad 342 is fixedly installed between the inner surface of one end of the clamping piece 341 and the outer surface of the clamping tube 34, and an anti-slip pad 3411 is fixedly installed on the inner surface of the other end of the clamping piece 341, and a mounting baffle 35 is movably installed 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 installed on the top of the rotating tube mounting seat 32; in this embodiment, the rotating tube mounting seat 32 mainly plays the role of mounting the rotating tube 31, and the workpiece passes through the clamping tube 34 and the rotating tube 31 The clamping telescopic rod 36 is driven to work and drive the mounting baffle 35 and the clamping tube 34 to approach the rotating tube 31, so that the extrusion groove plate 311 is stuck in the outer side of the clamping piece 341 so that the anti-skid pad 3411 clamps the workpiece. At this time, the driving motor 33 drives the rotating tube 31 to rotate, and the clamping tube 34 is also forced to clamp the workpiece and rotate, so that the workpiece can be cut in a circular shape. After the cutting is completed, the closed circular plate 251 on the inner side of the limiting closed baffle 25 rotates and contracts, so that one side of the cutting limiting tube 22 is exposed. At this time, the clamping telescopic rod 36 is driven to push the mounting baffle 35 to drive the clamping tube 34 to leave the limiting position of the extrusion groove plate 311. Under the elasticity of the elastic supporting pad 342, one end of the anti-skid pad 3411 is tilted, so that the workpiece is relaxed. The workpiece continues to be pushed, and the end whose cutting is completed will be discharged. Then, the closed circular plate 251 closes one side of the cutting limiting tube 22, and the next cutting is continued.

[0021] Embodiment 4, on the basis of embodiment 3, this embodiment further proposes a specific auxiliary cutting method of a cutting assembly for processing rivet nuts, comprising the following steps: step 1, workpiece feeding, the workpiece enters through the workpiece entry slot 11, passes through the rotating tube 31, the cutting limit tube 1 21 and the cutting limit tube 2 22, 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 assembly 12 is positioned to the through hole of the laser cutting positioning frame 26, the inert gas injection pipe 216 injects inert gas into the inner side of the closed movable circle 214 to fill the cutting area between the cutting limit tube 1 21 and the cutting limit tube 2 22, and at the same time, the inert gas guide ring 212 on the inner side of the slag adsorption retaining ring 211 injects the inert gas into the inner side of the closed movable circle 214 to fill the cutting area between the cutting limit tube 1 21 and the cutting limit tube 22, and at the same time, the inert gas guide ring 212 on the inner side of the slag adsorption retaining ring 211 injects the inert gas into the slag adsorption retaining ring 211. The gas is guided outward, so that the slag is brought out of the cutting seam away from the workpiece and is gathered on the inclined surface of the slag adsorption baffle ring 211, which can effectively remove the slag generated during the cutting process; step three, stop cutting and withdraw the material, the closed circular plate 251 on the inner side of the limiting closed baffle frame 25 rotates and contracts, so that one side of the cutting limit tube 22 is exposed, and at this time, the clamping telescopic rod 36 is driven to push the installation baffle 35 to drive the clamping tube 34 to leave the limit of the extrusion groove plate 311, and the clamping piece 341 is under the elasticity of the elastic support pad 342, and one end of the anti-slip pad 3411 is tilted to relax the workpiece, and the workpiece continues to be pushed, and the end where the cutting is completed will be discharged, and then, the closed circular plate 251 rotates to close one side of the cutting limit tube 22, and continues to the next cutting.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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); a laser cutting positioning frame (26) is arranged above the first cutting limit tube (21) and the second cutting limit tube (22); the workpiece clamping rotating assembly (3) comprises a rotating tube (31) and a clamping tube (34); a slag adsorption retaining ring (21) is fixedly mounted on one side of the first cutting limit tube (21) close to the second cutting limit tube (22); 1), an inert gas guide ring (212) is fixedly mounted on the inner surface of the middle part of the slag adsorption baffle ring (211), a slag adsorption pad (213) is arranged on the outer surface of the slag adsorption baffle ring (211), a cutting protection inner ring (215) is arranged in the middle part of the other side of the cutting limit tube (21), a closed rear groove plate (2151) is fixedly mounted 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 mounted between the closed rear groove plate (2151) and the slag adsorption baffle ring (211), and a limit sealing ring matching the closed movable ring (214) is arranged on the side surfaces of the closed rear groove plate (2151) and the slag adsorption baffle ring (211).

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: The laser cutting positioning frame (26) is fixedly mounted on the top of the first cutting limit tube (21) and the second cutting limit tube (22) by means of bolts; the outer surface of the laser cutting positioning frame (26) is clamped with the middle of the surrounding ring (23); a through hole matching the laser cutting assembly (12) is provided in the middle of the laser cutting positioning frame (26); and a focusing convex mirror (261) is provided below the through hole of the laser cutting positioning frame (26).

4. A cutting assembly for processing self-clinching nuts according to claim 3, 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 on one side of the convex mirror mounting frame (262) is threadedly connected to an outer surface of the adjusting threaded bolt (263).

5. The 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).

6. A cutting assembly for processing self-clinching nuts according to claim 5, 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).

7. A 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).

8. A cutting assembly for processing self-clinching nuts according to claim 7, 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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