A laser cutting and chamfering device for the end of a seamless steel pipe

Abstract

This invention discloses a laser-cut chamfering device for seamless steel pipe ends, belonging to the technical field of steel pipe cutting equipment. It includes a base, a laser cutting mechanism, a pipe end processing seat, a fixing mechanism, an auxiliary mechanism, and an internal stabilizing mechanism. The pipe end processing seat has a through hole in the center for the steel pipe to pass through. The fixing mechanism drives a pushing seat, end face plate, cross-shaped pressing block, inner extension rod, and magnetic inner support head to move forward synchronously via an electric telescopic rod, allowing the magnetic inner support head to enter the inside of the steel pipe and provide internal support for the pipe end. The cross-shaped pressing block drives a wedge-shaped pressing block to compress an elastic fitting pad via a linkage rod, causing the rhomboid pressing block to rotate slightly within an annular groove with the rotating ring and fit against the outer wall of the steel pipe. The magnetic follower sleeve of the internal stabilizing mechanism moves with the magnetic inner support head under the action of the same polarity of magnetism and is reset by a return spring. This device can form a composite positioning of the end face, inner wall, and outer wall before laser cutting and chamfering, reducing pipe end vibration, eccentricity, and thermal deformation, and improving the consistency of the chamfering.

Description

Technical Field

[0001] This invention relates to the field of steel pipe cutting equipment technology, specifically to a laser cutting and chamfering device for the end of a seamless steel pipe. Background Technology

[0002] In the intelligent manufacturing equipment industry, metal cutting and forming machine tools, metal cutting and welding equipment, metal processing machinery, industrial automatic control system devices, and related intelligent processing equipment are widely used in the batch processing of pipes, profiles, and precision structural components. Seamless steel pipes, as commonly used metal pipes in machinery manufacturing, fluid transportation, petrochemicals, pressure pipelines, automotive parts, and engineering structural components, typically require end cutting, trimming, and chamfering before blanking, fixed-length cutting, or end connection to remove burrs, form welding bevels, or improve assembly performance. Current pipe end chamfering methods mostly employ turning, milling, or grinding, requiring the steel pipe to be clamped before machining the inner and outer edges of the pipe end with a cutting tool. While these methods can achieve chamfering, they require frequent adjustments to the fixture, tool feed rate, and cutting position when continuously processing steel pipes of different diameters and wall thicknesses, resulting in low processing efficiency. Furthermore, slight wobbling is prone to occur at the pipe end under stress, affecting the consistency of the chamfer dimensions.

[0003] In existing technologies, for example, the invention patent with authorization announcement number CN108421988B entitled "An Automated Seamless Steel Pipe Chamfering Machine" discloses a chamfering machine body, frame, rotating wheel, notch, feeding frame, pushing mechanism, clamping block, and cutting components. This solution mainly uses a rotating wheel with a notch to feed steel pipes one by one, and then the pushing mechanism pushes the steel pipes into the chamfering machine body for clamping and chamfering. The improvement of this type of structure focuses on automatic feeding, automatic pushing, and mechanical chamfering, which can reduce manual handling. However, its support for the pipe end processing area still mainly relies on external clamping and end pushing. When the steel pipe diameter is small, the wall thickness is thin, or the pipe end needs laser cutting chamfering, the inner wall of the pipe end lacks follow-up support, which can easily lead to end eccentricity, micro-vibration, or localized deformation during pushing, positioning, and thermal cutting.

[0004] For example, the invention patent with authorization announcement number CN119035811B and titled "A High-Efficiency Cutting Device for Seamless Stainless Steel Pipes" discloses structures such as a main frame, mounting platform, adjustment mechanism, pitch-changing mechanism, reciprocating mechanism, deflection mechanism, and conveying mechanism. It achieves automatic adjustment of the distance between the laser cutter and the steel pipe, as well as the cutting speed, through components such as a sliding cylinder, moving frame, sliding ball, and fixed arc block. This solution mainly addresses the problem of varying laser cutting distance and stroke under different cutting angles, but its core still relies on the laser head's movement trajectory and cutting parameter compensation. It does not specifically address the composite stability of the inner and outer walls of the steel pipe end, end-face pressure, adaptation to small-diameter pipe openings, or magnetic follow-up support.

[0005] Therefore, during the laser cutting and chamfering process of seamless steel pipe ends, a device is still needed that can simultaneously complete end face positioning, inner wall support, outer wall elastic clamping, and follow-up pipe stabilization before cutting, so that the steel pipe end can maintain axial stability during laser cutting and chamfering, and reduce problems such as pipe end runout, cutting deviation, thermal deformation, and inconsistent chamfering. Summary of the Invention

[0006] The purpose of this invention is to provide a laser cutting and chamfering device for the ends of seamless steel pipes, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a seamless steel pipe end laser cutting and chamfering device, comprising a laser cutting mechanism, a longitudinal clamping frame, a chamfering adjustment assembly, a pipe body support frame, a guide beam, an end drive component, a sliding seat, an internal stabilizing mechanism, a fixed seat, a pipe end processing seat, and a base, characterized in that:

[0008] The laser cutting mechanism is mounted on the base and is used to perform laser cutting and chamfering on the ends of the steel pipe body.

[0009] The pipe end processing seat is located on one side of the base. The middle part of the pipe end processing seat is provided with a pipe end through hole for the steel pipe body to pass through. The center line of the pipe end through hole is set to correspond to the axis of the steel pipe body.

[0010] The tube support frame is located on both sides of the top of the tube end processing seat. The guide beam is located in the middle of one side of the tube support frame. The sliding seat is slidably mounted on the guide beam. The end drive component is connected to the sliding seat for driving the sliding seat to move along the guide beam. The chamfer adjustment component is located on one side of the sliding seat and is linked to the cutting head of the laser cutting mechanism for adjusting the cutting angle of the cutting head relative to the end of the steel pipe body.

[0011] The tube end processing seat is equipped with a fixing mechanism, an auxiliary mechanism, and an internal stabilizing mechanism;

[0012] The fixing mechanism is located at one end of the pipe end hole and is used to position the end face and inner wall of the steel pipe body.

[0013] The auxiliary mechanism is located on the outer periphery of the pipe end perforation and is used to elastically press the outer wall of the steel pipe body near the pipe end.

[0014] The internal stabilizing mechanism is located on the other side of the pipe end processing seat, and the geometric center of the internal stabilizing mechanism is on the same straight line as the geometric center of the pipe end perforation. It is used to stabilize the steel pipe body when the fixing mechanism extends into the inner side of the steel pipe body.

[0015] Furthermore, the fixing mechanism includes a fixed base, a fixed mounting plate, an electric telescopic rod, a pushing base, a cross-shaped pressing block, an end face plate, a magnetic inner support head, and an inner extension rod;

[0016] The fixed mounting plate is disposed at one end of the pipe end through hole, the electric telescopic rod is mounted on the fixed mounting plate, and the telescopic direction of the electric telescopic rod is parallel to the center line of the pipe end through hole;

[0017] The pusher seat is connected to the telescopic end of the electric telescopic rod. The end face abutment is located at one end of the pusher seat facing the steel pipe body. The cross-shaped pressing block is embedded in the inner side of the end face abutment. The inner extension rod is located at one end of the pusher seat facing the steel pipe body. The magnetic inner support head is located at the front end of the inner extension rod. The outer layer of the magnetic inner support head is covered with a magnetic layer.

[0018] Furthermore, the end face abutment plate is provided with a planar abutment surface adapted to the end face of the steel pipe body on the side facing the steel pipe body, the cross abutment block includes intersecting transverse abutment arms and longitudinal abutment arms, and the inner side of the end face abutment plate is provided with a cross receiving groove for the cross abutment block to slide or be embedded.

[0019] When the diameter of the steel pipe body is greater than the effective pressing width of the end face plate, the end face plate abuts against the end face of the steel pipe body; when the diameter of the steel pipe body is less than the effective pressing width of the end face plate, the cross pressing block protrudes from the inside of the end face plate and abuts against the annular end face of the steel pipe body, so as to avoid the end face plate blocking the pipe opening or causing bias pressure on small-diameter steel pipes.

[0020] Furthermore, the inner extension rod is coaxially arranged with the pipe end through hole, the outer diameter of the inner extension rod is smaller than the inner diameter of the steel pipe body, the front end of the magnetic inner support head is set as a circular arc guide surface or a conical guide surface, and the outer periphery of the magnetic inner support head is covered with a wear-resistant and heat-insulating layer.

[0021] When the electric telescopic rod extends, the inner extension rod drives the magnetic inner support head into the inner side of the steel pipe body, and the magnetic inner support head supports the inner wall of the steel pipe body near the cut chamfer position.

[0022] Furthermore, the auxiliary mechanism includes an annular groove, a rotating ring, a diamond-shaped pressure block, an elastic fitting pad, a wedge-shaped pressure block, and a linkage rod;

[0023] The annular groove is formed on the outside of the pipe end perforation. The rotating ring is rotatably disposed within the annular groove. The rhomboid pressure block is disposed at the upper and lower ends of the rotating ring. The end of the rhomboid pressure block facing the pipe end perforation is recessed inward to form a pressing and mounting cavity. The elastic fitting pad is disposed within the pressing and mounting cavity. The wedge-shaped pressure block is disposed on the outside of the elastic fitting pad. One end of the wedge-shaped pressure block is connected to the linkage rod. The end of the linkage rod away from the wedge-shaped pressure block is fixedly connected to the cross-shaped pressure block.

[0024] Furthermore, the elastic bonding pad has an arc-shaped bonding surface on the side facing the steel pipe body, the curvature of the arc-shaped bonding surface is adapted to the outer wall of the steel pipe body, and the elastic bonding pad is made of heat-resistant elastic material.

[0025] The wedge-shaped pressure block has an inclined extrusion surface on the side facing the elastic bonding pad. When the cross-shaped pressure block moves forward, the wedge-shaped pressure block moves forward synchronously through the linkage rod. The inclined extrusion surface of the wedge-shaped pressure block extrudes the elastic bonding pad, causing the elastic bonding pad to bulge towards the outer wall of the steel pipe body and adhere to the steel pipe body.

[0026] Furthermore, an annular limiting flange is provided between the rotating ring and the annular groove, and the annular limiting flange is used to restrict the rotating ring from axially dislodging along the tube end through hole;

[0027] The diamond-shaped pressure block is subjected to force when the wedge-shaped pressure block compresses the elastic bonding pad, and drives the rotating ring to rotate slightly in the annular groove, so that the upper and lower elastic bonding pads can automatically adjust their bonding positions according to the eccentricity of the outer wall of the steel pipe body.

[0028] Furthermore, the internal stabilizing mechanism includes an internal stabilizing seat, a clearance groove, an internal stabilizing guide rod, a limiting end block, a magnetic follower sleeve, and a reset spring;

[0029] The clearance groove is located on one side of the inner sturdy seat and is used to provide clearance space for the placement and passage of the steel pipe body.

[0030] The inner stabilizing guide rod is disposed on the back of the inner stabilizing seat, the limiting end block is disposed on one end of the inner stabilizing guide rod, the magnetic follower sleeve is sleeved on one end of the inner stabilizing guide rod, and the reset spring is disposed on one end of the magnetic follower sleeve.

[0031] The inner side of the magnetic follower sleeve is covered with a magnetic attraction layer, and the magnetic poles of the magnetic attraction layer inside the magnetic follower sleeve are the same as those of the magnetic attraction layer outside the magnetic inner support head.

[0032] Furthermore, the magnetic follower sleeve is provided with an arc-shaped stabilizing surface on the side facing the steel pipe body, and the arc-shaped stabilizing surface contacts or maintains a clearance fit with the outer wall of the steel pipe body.

[0033] When the magnetic inner support head enters the inner side of the steel pipe body and moves along the axial direction of the steel pipe body, the magnetic inner support head and the magnetic follower sleeve generate a magnetic repulsion effect of the same pole, which pushes the magnetic follower sleeve to move synchronously along the inner stabilizing guide rod. The limiting end block restricts the maximum displacement of the magnetic follower sleeve, and the return spring pushes the magnetic follower sleeve to return to its original position after the magnetic inner support head withdraws.

[0034] Furthermore, it also includes a controller, which is electrically connected to the laser cutting mechanism, the chamfering adjustment assembly, the end drive component, and the electric telescopic rod, respectively;

[0035] The controller is used to perform the following actions in sequence: the end drive unit drives the sliding seat to move, so that the end of the steel pipe body enters the pipe end perforation hole; the electric telescopic rod extends, so that the end face abutment plate or cross abutment block abuts the end face of the steel pipe body, and the magnetic inner support head enters the inner side of the steel pipe body; the linkage rod drives the wedge-shaped pressure block to squeeze the elastic fitting pad, so that the elastic fitting pad fits the outer wall of the steel pipe body; the chamfering adjustment component adjusts the cutting angle of the laser cutting mechanism, and the laser cutting mechanism completes the pipe end cutting and chamfering; after the cutting and chamfering are completed, the electric telescopic rod retracts, and the magnetic follower sleeve resets under the action of the return spring.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1. This invention, through the cooperation of an electric telescopic rod, a sliding seat, an end face abutment plate, a cross-shaped pressing block, an inner extension rod, and a magnetic inner support head, enables the fixing mechanism to simultaneously complete end face contact and internal pipe support in a single extension action. The end face abutment plate is suitable for end face positioning of steel pipes with larger diameters, the cross-shaped pressing block is suitable for pressing the end face of steel pipes with smaller diameters, and the magnetic inner support head, after entering the inner side of the steel pipe body, provides support to the inner wall of the pipe end, thereby reducing the risks of pipe end vibration, eccentricity, and inner wall collapse during laser cutting and chamfering.

[0038] 2. This invention utilizes the linkage of a cross-shaped pressure block, a connecting rod, a wedge-shaped pressure block, an elastic fitting pad, a diamond-shaped pressure block, a rotating ring, and an annular sliding groove. This allows the fixing mechanism to move forward while simultaneously driving the auxiliary mechanism to elastically fit and press against the outer wall of the steel pipe, eliminating the need for a separate external clamping drive source. The elastic fitting pad buffers the clamping force and adapts to errors in the outer wall of the steel pipe. The slight rotation of the rotating ring automatically compensates for eccentricity in the outer wall of the steel pipe, preventing the rigid clamp from directly damaging the pipe wall and improving the positioning stability of the pipe end.

[0039] 3. This invention utilizes the same-polarity magnetic interaction between the magnetic inner support head and the magnetic follower sleeve, enabling the magnetic follower sleeve to move synchronously along the inner stabilizing guide rod when the magnetic inner support head enters the inner side of the steel pipe. The sleeve then provides follow-up stabilization to the outer side of the steel pipe via an arc-shaped stabilizing surface. After chamfering is completed, a return spring pushes the magnetic follower sleeve to reset. This structure achieves synchronous response between internal pipe support and external pipe stabilization without the need for complex mechanical linkages, reducing the suspended length of the pipe end processing area and improving the reliability of continuous processing. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of a laser cutting and chamfering device for the end of a seamless steel pipe according to the present invention;

[0041] Figure 2 This is a schematic diagram of the overall structure of a laser cutting and chamfering device for the end of a seamless steel pipe according to the present invention from another perspective;

[0042] Figure 3This is a schematic diagram of the assembly structure of the pipe end processing seat, fixing mechanism, auxiliary mechanism and internal stabilizing mechanism of the present invention;

[0043] Figure 4 This is a partial structural diagram of the annular groove, rotating ring, rhomboid pressure block, and elastic bonding pad in the auxiliary mechanism of the present invention;

[0044] Figure 5 This is a schematic diagram of the structure of the electric telescopic rod, the sliding seat, the end face plate, the cross pressing block, the inner extension rod, and the magnetic inner support head in the fixing mechanism of the present invention.

[0045] Figure 6 This is a schematic diagram of the working state of the wedge-shaped pressure block of the present invention, which drives the elastic fitting pad to press against the outer wall of the steel pipe through the linkage rod;

[0046] Figure 7 This is a schematic diagram of the structure of the magnetic follower sleeve, the internal stabilizing guide rod, the limiting end block and the reset spring in the internal stabilizing mechanism of the present invention.

[0047] Figure 8 This is a schematic diagram of the working state in which the magnetic inner support head of the present invention enters the inner side of the steel pipe and forms a magnetically stable follower sleeve.

[0048] In the diagram: 1. Laser cutting mechanism; 2. Longitudinal clamping frame; 3. Chamfering adjustment assembly; 4. Pipe support frame; 5. Guide beam; 6. End drive component; 7. Sliding seat; 8. Internal stabilizing mechanism; 9. Fixed seat; 10. Pipe end processing seat; 11. Steel pipe body; 12. Base; 13. Annular groove; 14. Pipe end perforation; 15. Fixed mounting plate; 16. Return spring; 17. Magnetic follower sleeve; 18. Limiting end block; 19. Internal stabilizing guide rod; 20. Relief groove; 21. Electric telescopic rod; 22. Diamond-shaped pressure block; 23. Elastic fitting pad; 24. Rotating ring; 25. Inner extension rod; 26. Magnetic inner support head; 27. Linkage rod; 28. Cross-shaped pressure block; 29. ​​Pushing seat; 30. End face abutment plate; 31. Wedge-shaped pressure block. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example:

[0051] like Figures 1 to 8As shown, this embodiment provides a seamless steel pipe end laser cutting and chamfering device, including a laser cutting mechanism 1, a longitudinal clamping frame 2, a chamfering adjustment component 3, a pipe body support frame 4, a guide beam 5, an end drive component 6, a sliding seat 7, an internal stabilizing mechanism 8, a fixed seat 9, a pipe end processing seat 10, and a base 12. The steel pipe body 11 is placed on the pipe body support frame 4, and the longitudinal clamping frame 2 initially limits the steel pipe body 11 in the vertical direction. The guide beam 5 is arranged along the axial direction of the steel pipe body 11, and the sliding seat 7 is installed on the guide beam 5. The end drive component 6 can be a motor screw assembly, a cylinder, or an electric push rod, used to drive the sliding seat 7 to move along the guide beam 5, so that the pipe end of the steel pipe body 11 gradually enters the pipe end perforation 14 in the middle of the pipe end processing seat 10. The chamfering adjustment component 3 is used to adjust the tilt angle of the cutting head in the laser cutting mechanism 1, so that the cutting head can cut, trim, and chamfer the inner and outer edges of the steel pipe end.

[0052] The pipe end processing seat 10 is the main positioning component in this embodiment. A pipe end through hole 14 is provided in the middle of the pipe end processing seat 10. The diameter of the pipe end through hole 14 is larger than the outer diameter of the steel pipe body 11, allowing the pipe end of the steel pipe body 11 to pass through the pipe end processing seat 10. To prevent the pipe end from being suspended when the steel pipe body 11 is supported only by external means, this embodiment simultaneously provides a fixing mechanism, an auxiliary mechanism, and an internal stabilizing mechanism 8 on the pipe end processing seat 10. The fixing mechanism is used for positioning from the steel pipe end face and the inner wall direction; the auxiliary mechanism is used for elastic clamping from the outer wall direction; and the internal stabilizing mechanism 8 is used for follow-up stabilization of the outer side of the steel pipe when the magnetic inner support head 26 enters the inner side of the steel pipe. After the three mechanisms cooperate, the steel pipe body 11 forms a three-dimensional composite constraint of the end face, inner wall, and outer wall in the laser-cut chamfered area.

[0053] The fixing mechanism includes a fixing base 9, a fixing mounting plate 15, an electric telescopic rod 21, a pushing seat 29, an end face abutment plate 30, a cross-shaped pressing block 28, an inner extension rod 25, and a magnetic inner support head 26. The fixing mounting plate 15 is fixed to the end of the pipe end processing seat 10 near the pipe end through hole 14. The electric telescopic rod 21 is mounted on the fixing mounting plate 15, and the extension direction of the electric telescopic rod 21 is parallel to the center line of the pipe end through hole 14. The pushing seat 29 is fixed to the extension end of the electric telescopic rod 21. When the electric telescopic rod 21 extends, it drives the pushing seat 29 to move towards the pipe end of the steel pipe body 11.

[0054] An end face abutment plate 30 is provided at one end of the pusher seat 29 facing the steel pipe body 11. The end face abutment plate 30 is used to abut the end face of the steel pipe body 11 to prevent the steel pipe body 11 from moving backward axially during laser cutting and chamfering. A cross-shaped pressing block 28 is provided on the inner side of the end face abutment plate 30. The cross-shaped pressing block 28 has a cross structure, and its transverse pressing arm and longitudinal pressing arm can abut the annular end face of the steel pipe body 11. The end face abutment plate 30 is suitable for steel pipes with larger diameters. When the steel pipe diameter is small, the width of the end face abutment plate 30 may cover the pipe opening or cause the pressing position to deviate. The cross-shaped pressing block 28 plays a substitute pressing role from the inner side of the end face abutment plate 30, directly abutting the annular edge of the pipe end of the steel pipe body 11, so that small-diameter steel pipes can also be stably positioned.

[0055] An inner extension rod 25 is positioned at the end of the push seat 29 facing the steel pipe body 11, and is coaxially arranged with the pipe end through hole 14. The outer diameter of the inner extension rod 25 is smaller than the inner diameter of the steel pipe body 11, preferably 0.5mm to 3mm smaller, to ensure that the inner extension rod 25 can smoothly enter the interior of the steel pipe body 11 without scratching the inner wall. A magnetic inner support head 26 is positioned at the front end of the inner extension rod 25, and the front end of the magnetic inner support head 26 is configured as an arc-shaped guide surface or a conical guide surface to facilitate its entry into the inner hole of the steel pipe body 11. The outer layer of the magnetic inner support head 26 is wrapped with a magnetic suction layer, which can be a permanent magnet ring, a magnetic steel sheet, or a magnetic collar. A wear-resistant and heat-insulating sleeve can be installed outside the magnetic suction layer to prevent the heat generated by laser cutting from being directly transferred to the magnetic suction layer.

[0056] The extension of the electric telescopic rod 21 simultaneously achieves end-face pressing, inner rod insertion, and magnetic internal support. Specifically, after the electric telescopic rod 21 is activated, it drives the pusher seat 29 forward, which in turn moves the end-face abutment plate 30 and the cross-shaped pressing block 28 closer to the end of the steel pipe body 11. When the end-face abutment plate 30 or the cross-shaped pressing block 28 abuts the end of the pipe, the axial position of the steel pipe body 11 is determined. At the same time, the inner extension rod 25 drives the magnetic internal support head 26 into the inner side of the steel pipe body 11, and the magnetic internal support head 26 provides support to the inner wall of the pipe end. In this way, the steel pipe body 11 does not rely solely on external clamping at the pipe end, but forms an internal support point inside the pipe, which can reduce pipe mouth vibration and pipe wall thermal deformation during laser cutting and chamfering.

[0057] The auxiliary mechanism includes an annular groove 13, a rotating ring 24, a rhomboid pressure block 22, an elastic fitting pad 23, a wedge-shaped pressure block 31, and a linkage rod 27. The annular groove 13 is circumferentially formed on the outside of the pipe end perforation 14, and the rotating ring 24 is rotatably mounted within the annular groove 13. A limiting flange is provided between the rotating ring 24 and the annular groove 13, ensuring that the rotating ring 24 can only rotate circumferentially within the annular groove 13 and will not disengage axially along the pipe end perforation 14. The rhomboid pressure block 22 is located at the upper and lower ends of the rotating ring 24, with one end of the rhomboid pressure block 22 recessed inward to form a pressing and mounting cavity. The elastic fitting pad 23 is located within the pressing and mounting cavity. The elastic fitting pad 23 can be made of silicone rubber, fluororubber, or heat-resistant polyurethane material, and has an arc-shaped fitting surface on the side facing the steel pipe body 11 for fitting the outer wall of the steel pipe body 11.

[0058] A wedge-shaped pressure block 31 is positioned on the outside of the elastic bonding pad 23. One end of the wedge-shaped pressure block 31 is connected to the linkage rod 27, and the end of the linkage rod 27 away from the wedge-shaped pressure block 31 is fixedly connected to the cross-shaped pressure block 28. This structure eliminates the need for a separate clamping cylinder or motor in the auxiliary mechanism. When the fixing mechanism is in operation, the cross-shaped pressure block 28 moves forward with the push seat 29, and the cross-shaped pressure block 28 synchronously drives the linkage rod 27 to move forward. The linkage rod 27 then drives the wedge-shaped pressure block 31 into the outside of the elastic bonding pad 23. Because the wedge-shaped pressure block 31 has an inclined pressing surface, when the wedge-shaped pressure block 31 moves forward, it will press the elastic bonding pad 23 towards the outer wall of the steel pipe body 11, causing the elastic bonding pad 23 to undergo elastic deformation and adhere to the outer wall of the steel pipe.

[0059] The axial displacement of the fixed mechanism is converted into the radial pressing displacement of the auxiliary mechanism. The forward movement of the cross-shaped pressing block 28, originally intended to abut against the end face of the steel pipe, is further transmitted to the wedge-shaped pressing block 31 via the linkage rod 27 in this embodiment. The inclined surface of the wedge-shaped pressing block 31 then presses against the elastic fitting pad 23, causing the elastic fitting pad 23 to adhere to the outer wall of the steel pipe. Thus, while the inner extension rod 25 enters the inner side of the steel pipe for internal support, the elastic fitting pad 23 provides flexible pressing from the outside of the steel pipe, forming a clamping fit between the inner and outer sides.

[0060] The function of the rhomboid pressure block 22 and the rotating ring 24 is not simply to fix the elastic bonding pad 23, but to achieve automatic bonding compensation. In actual processing, the steel pipe body 11 may have outer diameter errors, slight ovality, or placement eccentricity. When the wedge-shaped pressure block 31 presses against the elastic bonding pad 23, the elastic bonding pad 23 first contacts the higher side of the outer wall of the steel pipe. After the rhomboid pressure block 22 receives uneven reaction force, it drives the rotating ring 24 to rotate slightly within the annular groove 13, causing the upper and lower elastic bonding pads 23 to automatically adjust their contact positions. This prevents the rigid block from directly damaging the outer wall of the steel pipe and also avoids the steel pipe being pressed off-center due to single-point contact.

[0061] The internal stabilizing mechanism 8 includes an internal stabilizing seat, a clearance groove 20, an internal stabilizing guide rod 19, a limiting end block 18, a magnetic follower sleeve 17, and a return spring 16. The clearance groove 20 is located on one side of the internal stabilizing seat to provide space when the steel pipe body 11 is placed, preventing the internal stabilizing seat from interfering with the steel pipe entering the pipe end perforation 14. The internal stabilizing guide rod 19 is located on the back of the internal stabilizing seat, and the magnetic follower sleeve 17 is sleeved on the outside of the internal stabilizing guide rod 19, allowing the magnetic follower sleeve 17 to slide along the internal stabilizing guide rod 19. The limiting end block 18 is located at one end of the internal stabilizing guide rod 19 to limit the maximum sliding distance of the magnetic follower sleeve 17. The return spring 16 is located at one end of the magnetic follower sleeve 17 to push the magnetic follower sleeve 17 back to its original position after the magnetic effect is released or weakened.

[0062] A magnetic layer is laid on the inner side of the magnetic follower sleeve 17, and the magnetic poles of this magnetic layer are the same as those of the magnetic layer on the outside of the magnetic inner support head 26. Since like poles repel each other, when the magnetic inner support head 26 enters the inner side of the steel pipe body 11 along the inner extension rod 25 and moves along the axial direction of the steel pipe, the magnetic inner support head 26 will push the magnetic follower sleeve 17 to move along the inner stabilizing guide rod 19 through magnetic action. An arc-shaped stabilizing surface is provided on the side of the magnetic follower sleeve 17 facing the steel pipe body 11. This arc-shaped stabilizing surface can be close to the outer wall of the steel pipe or maintain a small gap with the outer wall of the steel pipe. After the magnetic follower sleeve 17 moves, it can form an outer follower support near the end of the steel pipe body 11, which cooperates with the inner support of the magnetic inner support head 26 to prevent the steel pipe body 11 from radially swaying in the chamfered area.

[0063] The internal stabilizing mechanism 8 is designed to solve the problem that ordinary pipe end clamps can only be fixed in one position and cannot follow the position change of the internal support head. After the magnetic internal support head 26 enters the inside of the steel pipe, the inner wall of the pipe end is supported. However, if the support position on the outside of the steel pipe is fixed, local swaying may still occur under the influence of cutting heat or external forces. In this embodiment, the same polarity magnetic effect between the magnetic internal support head 26 and the magnetic follower sleeve 17 is used to make the magnetic follower sleeve 17 automatically follow the movement of the magnetic internal support head 26. There is no need to set up an additional connecting rod through the inside of the steel pipe, nor is it necessary to arrange a complex mechanical structure inside the pipe. After the chamfering is completed, the electric telescopic rod 21 retracts, the magnetic internal support head 26 exits the steel pipe body 11, the magnetic effect weakens, and the return spring 16 pushes the magnetic follower sleeve 17 back to the initial position, which is convenient for processing the next steel pipe.

[0064] In this embodiment, the laser cutting mechanism 1 adopts a fiber laser cutting structure commonly used in steel pipe cutting equipment. It includes a laser generating unit, an optical path transmission unit, a focusing cutting head, an auxiliary gas nozzle, a cutting head mounting base, and an adjustment structure for adjusting the height and focal length of the cutting head. The laser generating unit generates a laser beam, the optical path transmission unit transmits the laser beam to the focusing cutting head, the focusing cutting head focuses the laser beam onto the pipe end processing position of the steel pipe body 11, and the auxiliary gas nozzle sprays compressed air, nitrogen, or oxygen into the cutting area during laser cutting to remove molten metal and cutting fumes. The cutting head mounting base is connected to the chamfering adjustment assembly 3, allowing the focusing cutting head to change its tilt angle relative to the pipe end of the steel pipe body 11 with the chamfering adjustment assembly 3, thereby completing pipe end cutting, end face trimming, and chamfering of the inner and outer edges.

[0065] The chamfering adjustment assembly 3 adopts an angle adjustment structure commonly used in steel pipe end processing equipment. It consists of an angle adjustment seat, a rotating support, an angle drive, and an angle locking component. The angle adjustment seat is used to mount the cutting head of the laser cutting mechanism 1. The rotating support allows the angle adjustment seat to swing relative to the sliding seat 7. The angle drive drives the angle adjustment seat to rotate to the preset chamfering angle. The angle locking component locks the angle adjustment seat after the angle adjustment is completed. The angle drive can use common drive forms such as servo motors, stepper motors, electric push rods, cylinders, or manual adjusting screws. The angle locking component can use common locking forms such as locking bolts, clamping blocks, limit pins, or self-locking transmission pairs. During operation, the chamfering adjustment assembly 3 drives the cutting head of the laser cutting mechanism 1 to swing around the rotation center near the end of the steel pipe body 11 according to the required chamfering angle, so that the laser beam forms a predetermined angle with respect to the end face of the steel pipe, thereby forming the required chamfered surface at the end of the steel pipe.

[0066] The end drive unit 6 adopts a linear drive structure commonly used in steel pipe conveying and positioning equipment. It can be a motor-driven linear drive, a synchronous belt-driven linear drive, a cylinder-driven linear drive, a hydraulic cylinder-driven linear drive, or an electric push rod-driven linear drive. One end of the end drive unit 6 is mounted on the pipe support 4 or the guide beam 5, and the other end is connected to the sliding seat 7, used to drive the sliding seat 7 to reciprocate along the length of the guide beam 5. The guide beam 5 is used to limit the direction of movement of the sliding seat 7, ensuring that the sliding seat 7 can only move axially along the steel pipe body 11, preventing lateral swaying of the sliding seat 7 during feeding.

[0067] When the end drive 6 adopts a motor-driven linear drive, the motor outputs rotational motion, and the screw pair converts the rotational motion into linear motion of the sliding seat 7, enabling the steel pipe body 11 to enter the pipe end through hole 14 of the pipe end processing seat 10 with high positioning accuracy. When the end drive 6 adopts a cylinder, hydraulic cylinder, or electric push rod, the telescopic end directly pushes the sliding seat 7 to move along the guide beam 5, enabling the steel pipe body 11 to complete rapid feeding and retraction. The above linear drive forms are all commonly used structures in the field. The focus of this embodiment is not on the improvement of the end drive 6 itself, but on the fact that after the end drive 6 drives the steel pipe body 11 into the pipe end processing seat 10, it cooperates with the fixing mechanism, auxiliary mechanism, and internal stabilizing mechanism 8 to complete the composite positioning of the pipe end.

[0068] In practice, the steel pipe body 11 is placed on the pipe support frame 4. The end drive component 6 drives the sliding seat 7 to move along the guide beam 5 towards the pipe end processing seat 10, so that the pipe end of the steel pipe body 11 enters the pipe end through hole 14. When the steel pipe body 11 reaches the preset processing position, the end drive component 6 stops moving, the fixing mechanism starts working, and abuts the end face of the steel pipe through the end face abutment plate 30 or the cross abutment block 28, while the magnetic inner support head 26 enters the inside of the steel pipe. Subsequently, the auxiliary mechanism elastically fits and presses the outer wall of the steel pipe, and the inner stabilizing mechanism 8 follows and stabilizes the outer side of the steel pipe. After the steel pipe body 11 completes the end face positioning, inner wall support and outer wall pressing, the chamfering adjustment component 3 adjusts the cutting head of the laser cutting mechanism 1 to the preset angle, and the laser cutting mechanism 1 cuts and chamfers the end of the steel pipe.

[0069] With the above configuration, the laser cutting mechanism 1, the chamfering adjustment component 3, and the end drive component 6 all adopt mature structures commonly used in the field. Their function is to provide laser cutting, angle adjustment, and axial feed functions for the processing of steel pipe ends. The improvement of this invention focuses on the linkage between the fixing mechanism, the auxiliary mechanism, and the internal stabilizing mechanism 8. That is, after the steel pipe enters the pipe end processing seat 10, the stability of the steel pipe end during the laser cutting and chamfering process is improved by end face pressing, internal pipe support, external wall elastic clamping, and magnetic follow-up stabilization.

[0070] The laser cutting mechanism 1 in this embodiment includes a laser generating unit, a focusing cutting head, an auxiliary gas nozzle, a lifting adjustment seat, and a transverse feed seat. The focusing cutting head is positioned facing the end of the steel pipe body 11, and the auxiliary gas nozzle is arranged in the same direction as the focusing cutting head to blow away molten slag during cutting. The chamfering adjustment assembly 3 can be composed of an angle motor, a swing seat, and an angle limiting block. The angle motor drives the swing seat to rotate, so that the focusing cutting head forms a predetermined tilt angle relative to the end of the steel pipe body 11. When cutting is required, the focusing cutting head scans vertically or nearly vertically to the pipe wall; when chamfering is required, the focusing cutting head scans the inner and outer edges of the pipe end at a set tilt angle to form a chamfered surface.

[0071] The steel pipe body 11 is placed on the pipe support frame 4, so that the axis of the steel pipe body 11 roughly corresponds to the center line of the pipe end through hole 14. The longitudinal clamping frame 2 is lowered or pressed to initially limit the steel pipe body 11 and prevent the steel pipe from jumping during transportation.

[0072] The end drive 6 is activated, causing the sliding seat 7 to move along the guide beam 5, and the end of the steel pipe body 11 enters the pipe end through hole 14 of the pipe end processing seat 10. When the end of the steel pipe body 11 reaches the preset position, the end drive 6 stops.

[0073] The electric telescopic rod 21 is activated and extends, driving the pusher seat 29 to move towards the steel pipe body 11. The pusher seat 29 drives the end face abutment plate 30, the cross abutment block 28, the inner extension rod 25, and the magnetic inner support head 26 to move forward simultaneously. For larger diameter steel pipes, the end face abutment plate 30 abuts against the end face of the steel pipe body 11; for smaller diameter steel pipes, the cross abutment block 28 abuts against the end face of the steel pipe body 11. At the same time, the inner extension rod 25 drives the magnetic inner support head 26 into the inner side of the steel pipe body 11 to support the inner wall of the pipe end.

[0074] When the cross-shaped pressure block 28 moves forward, it drives the linkage rod 27 to move forward synchronously. The linkage rod 27 drives the wedge-shaped pressure block 31 to squeeze the elastic bonding pad 23. Under the action of the wedge-shaped pressure block 31, the elastic bonding pad 23 protrudes towards the outer wall of the steel pipe body 11 and fits against the outer wall of the steel pipe. If there is a slight eccentricity on the outer wall of the steel pipe, the diamond-shaped pressure block 22, after being stressed, drives the rotating ring 24 to rotate slightly in the annular groove 13, so that the elastic bonding pad 23 automatically adjusts the pressing position.

[0075] After the magnetic inner support head 26 enters the inner side of the steel pipe body 11, a magnetic repulsion effect is generated between the outer magnetic layer of the magnetic inner support head 26 and the inner magnetic layer of the magnetic follower sleeve 17. The magnetic follower sleeve 17 moves along the inner stabilizing guide rod 19, and its arc-shaped stabilizing surface approaches or adheres to the outer wall of the steel pipe, forming a follower stabilizing effect on the steel pipe body 11. The limiting end block 18 restricts the maximum displacement of the magnetic follower sleeve 17 to prevent the magnetic follower sleeve 17 from detaching from the inner stabilizing guide rod 19.

[0076] The laser cutting mechanism 1 is activated, and the chamfering adjustment component 3 adjusts the focusing cutting head to a preset angle. The focusing cutting head performs laser cutting, trimming, or chamfering on the end of the steel pipe body 11. Since the end of the steel pipe is simultaneously subjected to end face contact, inner wall support, outer wall elastic compression, and magnetic follow-up stabilization, the steel pipe body 11 is less prone to vibration, eccentricity, or thermal deformation in the cutting and chamfering area, thus improving the stability of the pipe end cutting line and chamfered surface.

[0077] After the chamfering is completed, the laser cutting mechanism 1 stops, and the electric telescopic rod 21 retracts. The pusher seat 29 drives the end face plate 30, the cross-shaped pressing block 28, the inner extension rod 25, and the magnetic inner support head 26 to exit the steel pipe body 11. The wedge-shaped pressing block 31 exits with the linkage rod 27, and the elastic fitting pad 23 returns to its original position and detaches from the outer wall of the steel pipe due to its own elasticity. After the magnetic inner support head 26 exits, the magnetic effect weakens, and the return spring 16 pushes the magnetic follower sleeve 17 to return to its original position along the inner stabilizing guide rod 19. Subsequently, the end drive 6 drives the sliding seat 7 to retract or continue to transport to the next processing position, completing one cycle of laser cutting and chamfering of the pipe end.

[0078] Through the above structure and working process, this embodiment does not simply change the trajectory of the laser cutting head, nor does it rely solely on external clamps to hold the steel pipe. Instead, it combines end-face pressing, internal support, external elastic clamping, and magnetic follow-up stabilization on a single pipe end processing seat 10. A forward movement of the fixing mechanism can simultaneously drive the internal support and external clamping. The internal stabilization mechanism 8, through magnetic action, follows the position of the internal support, giving the steel pipe end better positioning stability and processing consistency during laser cutting and chamfering.

[0079] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A seamless steel pipe end laser cutting and chamfering device, comprising a laser cutting mechanism (1), a longitudinal clamping frame (2), a chamfering adjustment assembly (3), a pipe body support frame (4), a guide beam (5), an end drive component (6), a sliding seat (7), an internal stabilizing mechanism (8), a fixed seat (9), a pipe end processing seat (10), and a base (12), characterized in that: The laser cutting mechanism (1) is mounted on the base (12) and is used to perform laser cutting and chamfering on the pipe end of the steel pipe body (11). The pipe end processing seat (10) is located on one side of the base (12). The middle part of the pipe end processing seat (10) is provided with a pipe end through hole (14) for the steel pipe body (11) to pass through. The center line of the pipe end through hole (14) is set in correspondence with the axis of the steel pipe body (11). The tube support bracket (4) is located on both sides of the top of the tube end processing seat (10). The guide beam (5) is located in the middle of one side of the tube support bracket (4). The sliding seat (7) is slidably located on the guide beam (5). The end drive component (6) is connected to the sliding seat (7) for driving the sliding seat (7) to move along the guide beam (5). The chamfer adjustment component (3) is located on one side of the sliding seat (7) and is linked with the cutting head of the laser cutting mechanism (1) for adjusting the cutting angle of the cutting head relative to the end of the steel pipe body (11). The pipe end processing seat (10) is provided with a fixing mechanism, an auxiliary mechanism and an internal stabilizing mechanism (8). The fixing mechanism is located at one end of the pipe end through hole (14) and is used to position the end face and inner wall of the steel pipe body (11); The auxiliary mechanism is located on the outer periphery of the pipe end perforation (14) and is used to elastically press the outer wall of the steel pipe body (11) near the pipe end. The internal stabilizing mechanism (8) is located on the other side of the pipe end processing seat (10), and the geometric center of the internal stabilizing mechanism (8) and the geometric center of the pipe end through hole (14) are on the same central line. It is used to stabilize the steel pipe body (11) when the fixing mechanism extends into the inside of the steel pipe body (11).

2. The seamless steel pipe end laser cutting and chamfering device according to claim 1, characterized in that: The fixing mechanism includes a fixing seat (9), a fixing mounting plate (15), an electric telescopic rod (21), a pushing seat (29), a cross pressing block (28), an end face pressing plate (30), a magnetic inner support head (26), and an inner extension rod (25). The fixed mounting plate (15) is set at one end of the pipe end hole (14), the electric telescopic rod (21) is installed on the fixed mounting plate (15), and the telescopic direction of the electric telescopic rod (21) is parallel to the center line of the pipe end hole (14). The push seat (29) is connected to the telescopic end of the electric telescopic rod (21). The end face abutment plate (30) is set at one end of the push seat (29) facing the steel pipe body (11). The cross abutment block (28) is embedded in the inner side of the end face abutment plate (30). The inner extension rod (25) is set at one end of the push seat (29) facing the steel pipe body (11). The magnetic inner support head (26) is set at the front end of the inner extension rod (25). The outer layer of the magnetic inner support head (26) is wrapped with a magnetic suction layer.

3. The seamless steel pipe end laser cutting and chamfering device according to claim 2, characterized in that: The end face plate (30) facing the steel pipe body (11) is provided with a planar abutment surface adapted to the end face of the steel pipe. The cross abutment block (28) includes intersecting transverse abutment arms and longitudinal abutment arms. The inner side of the end face plate (30) is provided with a cross receiving groove for the cross abutment block (28) to slide or be embedded. When the diameter of the steel pipe body (11) is greater than the effective pressing width of the end face abutment plate (30), the end face abutment plate (30) abuts against the end face of the steel pipe body (11); when the diameter of the steel pipe body (11) is less than the effective pressing width of the end face abutment plate (30), the cross pressing block (28) protrudes from the inner side of the end face abutment plate (30) and abuts against the annular end face of the pipe end of the steel pipe body (11) to avoid the end face abutment plate (30) blocking the pipe opening or causing bias pressure on small-diameter steel pipes.

4. The seamless steel pipe end laser cutting and chamfering device according to claim 2, characterized in that: The inner extension rod (25) is coaxially arranged with the pipe end through hole (14). The outer diameter of the inner extension rod (25) is smaller than the inner diameter of the steel pipe body (11). The front end of the magnetic inner support head (26) is set as an arc-shaped guide surface or a conical guide surface. The outer periphery of the magnetic inner support head (26) is covered with a wear-resistant and heat-insulating layer. When the electric telescopic rod (21) extends, the inner extension rod (25) drives the magnetic inner support head (26) to enter the inner side of the steel pipe body (11), and the magnetic inner support head (26) supports the inner wall of the steel pipe body (11) near the cut chamfer position.

5. The seamless steel pipe end laser cutting and chamfering device according to claim 1, characterized in that: The auxiliary mechanism includes an annular groove (13), a rotating ring (24), a rhomboid pressure block (22), an elastic fitting pad (23), a wedge-shaped pressure block (31), and a linkage rod (27). The annular groove (13) is circumferentially opened on the outside of the pipe end perforation (14). The rotating ring (24) is rotatably set in the annular groove (13). The rhomboid pressure block (22) is set at the upper and lower ends of the rotating ring (24). The end of the rhomboid pressure block (22) facing the pipe end perforation (14) is recessed inward to form a pressing installation cavity. The elastic fitting pad (23) is set in the pressing installation cavity. The wedge-shaped pressure block (31) is set on the outside of the elastic fitting pad (23). One end of the wedge-shaped pressure block (31) is connected to the linkage rod (27). The end of the linkage rod (27) away from the wedge-shaped pressure block (31) is fixedly connected to the cross-shaped pressure block (28).

6. The seamless steel pipe end laser cutting and chamfering device according to claim 5, characterized in that: The elastic bonding pad (23) has an arc-shaped bonding surface on the side facing the steel pipe body (11). The curvature of the arc-shaped bonding surface is adapted to the outer wall of the steel pipe body (11). The elastic bonding pad (23) is made of heat-resistant elastic material. The wedge-shaped pressure block (31) has an inclined pressing surface on the side facing the elastic bonding pad (23). When the cross-shaped pressure block (28) moves forward, the wedge-shaped pressure block (31) moves forward synchronously through the linkage rod (27). The inclined pressing surface of the wedge-shaped pressure block (31) presses the elastic bonding pad (23), causing the elastic bonding pad (23) to bulge towards the outer wall of the steel pipe body (11) and fit against the steel pipe body (11).

7. The seamless steel pipe end laser cutting and chamfering device according to claim 5, characterized in that: An annular limiting flange is provided between the rotating ring (24) and the annular groove (13), and the annular limiting flange is used to restrict the rotating ring (24) from axially dislodging along the tube end through hole (14); The rhomboid pressure block (22) is subjected to force when the wedge-shaped pressure block (31) squeezes the elastic bonding pad (23), and drives the rotating ring (24) to rotate slightly in the annular groove (13), so that the upper and lower elastic bonding pads (23) can automatically adjust the bonding position according to the eccentricity of the outer wall of the steel pipe body (11).

8. The seamless steel pipe end laser cutting and chamfering device according to claim 2, characterized in that: The internal stabilizing mechanism (8) includes an internal stabilizing seat, a relief groove (20), an internal stabilizing guide rod (19), a limiting end block (18), a magnetic follower sleeve (17), and a return spring (16). The clearance groove (20) is provided on one side of the inner sturdy seat to provide clearance space for the placement and passage of the steel pipe body (11); The inner stabilizing guide rod (19) is disposed on the back of the inner stabilizing seat, the limiting end block (18) is disposed on one end of the inner stabilizing guide rod (19), the magnetic follower sleeve (17) is sleeved on one end of the inner stabilizing guide rod (19), and the reset spring (16) is disposed on one end of the magnetic follower sleeve (17). The magnetic follower sleeve (17) has a magnetic absorption layer on its inner side, and the magnetic absorption layer on the inner side of the magnetic follower sleeve (17) has the same magnetic pole as the magnetic absorption layer on the outer side of the magnetic inner support head (26).

9. A seamless steel pipe end laser cutting and chamfering device according to claim 8, characterized in that: The magnetic follower sleeve (17) is provided with an arc-shaped stabilizing surface on the side facing the steel pipe body (11), and the arc-shaped stabilizing surface contacts or maintains a clearance fit with the outer wall of the steel pipe body (11). When the magnetic inner support head (26) enters the inner side of the steel pipe body (11) and moves along the axial direction of the steel pipe body (11), the magnetic inner support head (26) and the magnetic follower sleeve (17) generate a magnetic repulsion effect of the same pole, which pushes the magnetic follower sleeve (17) to move synchronously along the inner stabilizing guide rod (19). The limiting end block (18) restricts the maximum displacement of the magnetic follower sleeve (17). After the magnetic inner support head (26) exits, the reset spring (16) pushes the magnetic follower sleeve (17) to reset.

10. The seamless steel pipe end laser cutting and chamfering device according to claim 1, characterized in that: It also includes a controller, which is electrically connected to the laser cutting mechanism (1), the chamfering adjustment assembly (3), the end drive (6) and the electric telescopic rod (21); The controller is used to perform the following actions in sequence: the end drive (6) drives the sliding seat (7) to move, so that the end of the steel pipe body (11) enters the pipe end through hole (14); the electric telescopic rod (21) extends, so that the end face abutment plate (30) or cross abutment block (28) abuts the end face of the steel pipe body (11), and the magnetic inner support head (26) enters the inner side of the steel pipe body (11); the linkage rod (27) drives the wedge-shaped pressure block (31) to squeeze the elastic fitting pad (23), so that the elastic fitting pad (23) fits the outer wall of the steel pipe body (11); the chamfer adjustment component (3) adjusts the cutting angle of the laser cutting mechanism (1), and the laser cutting mechanism (1) completes the pipe end cutting and chamfering; after the cutting and chamfering are completed, the electric telescopic rod (21) retracts, and the magnetic follower sleeve (17) resets under the action of the reset spring (16).

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