Laser cutting equipment for part groove

Abstract

The invention belongs to the technical field of laser cutting machining, and particularly relates to a part groove laser cutting device which comprises an outer diameter induction lifting mechanism, a self-swinging vertical mechanism, a workpiece clamping assembly, a tool presetting assembly and a rack. The outer diameter induction lifting mechanism comprises a lifting assembly, a longitudinal pressure applying assembly and a rolling induction assembly; the lifting assembly is arranged on the rack, the longitudinal pressure applying assembly is arranged between the lifting assembly and the rack, the self-swinging vertical mechanism is arranged on the lifting assembly, and the rolling sensing assembly is arranged on the self-swinging vertical mechanism. The core requirement that the rolling fork frame needs to be perpendicular to the machined face is put forward, angle recognition of the L-shaped cantilever is conducted through distance measurement data of the two laser distance measurement modules, and the rolling fork frame is made to be located on the perpendicular bisector of the two distance measurement point positions all the time.

Description

Technical Field

[0001] The invention belongs to the technical field of laser cutting processing, and in particular relates to a laser cutting device for part grooves. Background Art

[0002] A groove is a geometrically shaped groove formed on the welded portion of a weldment. Its primary purpose is to ensure weld strength and quality. It can be machined using various methods, including mechanical machining, gas cutting, and laser cutting. Laser cutting is widely used in these conditions due to its advantages, including high cutting quality, high speed, minimal debris, non-contact operation, and high flexibility.

[0003] Conventional pipe beveling mechanisms (such as the patented solution with publication number CN115194348B) secure the pipe to a rotatable chuck, then adjust the processing position by lateral movement and elevation. Furthermore, a motor is added at the end to adjust the laser angle to achieve the desired beveling angle setting. This conventional processing method has the following problems: First: There are many motion axes that need to be actively controlled, and the movement of each axis needs to be controlled by a servo motor. Therefore, the structure of the entire equipment is relatively complex, and the number of high-cost components such as drivers and servo motors is large.

[0004] Second: Since each axial movement requires active control, the model data and processing data must first be imported into the machine, and the software will calculate the corresponding tool path. This is suitable for large-scale processing of a single product, but not suitable for flexible processing scenarios of different models of products.

[0005] Third: For non-standard round tubes (such as polygonal tubes), if the cutting position is adjusted solely by the rotation of the profile workpiece, the correct bevel angle cannot be guaranteed. This is because the actual bevel angle is not only related to the tilt angle of the laser itself, but also requires that the adjustment plane of the torsion motor be kept perpendicular to the surface to be processed of the profile workpiece. Otherwise, the cumulative angle between the two will cause the bevel angle to change. To address this issue, existing techniques often add a forward-backward axial motion to the aforementioned references (e.g., the patented solution with publication number CN223028739U). This allows the laser to be moved forward and backward while the flat portion of the pipe is processed while the profile workpiece remains stationary. This solution not only increases the complexity of the structure but also requires tool alignment of the workpiece after clamping, further complicating the operation. Summary of the Invention

[0006] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a laser cutting device for part bevels. This solution uses a rolling fork frame that is in rolling contact with the profile workpiece to automatically adjust the lifting position of the lifting slide during the processing process. There is no need to input the dimensional parameters of the profile workpiece in advance, which is suitable for flexible processing scenarios. To address the issue of groove angle changes during profile workpiece rotation, this solution proposes the core requirement that the rolling fork frame must be perpendicular to the processed surface. The angle of the L-shaped cantilever is identified through the distance measurement data of two sets of laser ranging modules, ensuring that the rolling fork frame is always located on the perpendicular bisector of the two distance measurement points. By ensuring the relative stability of both angle and distance, the groove angle can be automatically maintained consistent when processing pipes with different contours.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a laser cutting device for part bevels, including an outer diameter sensing lifting mechanism, a self-swinging vertical mechanism, a workpiece clamping assembly, a tool preset assembly and a frame. The outer diameter sensing lifting mechanism includes a lifting assembly, a longitudinal pressure assembly and a rolling sensing assembly. The lifting assembly is arranged on the frame, the longitudinal pressure assembly is arranged between the lifting assembly and the frame, the self-swinging vertical mechanism is arranged on the lifting assembly, the rolling sensing assembly is arranged on the self-swinging vertical mechanism, the workpiece clamping assembly is arranged on the frame, and the tool preset assembly is arranged on the self-swinging vertical mechanism; the self-swinging vertical mechanism includes an arc swinging assembly, a laser ranging module and a swing adjustment assembly. The arc swinging assembly is arranged on the lifting assembly, and the swing adjustment assembly and the laser ranging module are arranged on the arc swinging assembly.

[0008] The outer diameter sensing lifting mechanism can automatically sense the equivalent diameter of the current cutting position and automatically adjust the height of the laser; the self-swinging vertical mechanism can keep the laser and the processed surface perpendicular, thereby ensuring the correct angle of the groove.

[0009] Preferably, the arc-shaped swing assembly includes an arc-shaped slide groove, an arc-shaped slider and an L-shaped cantilever, the arc-shaped slide groove is arranged on the lifting assembly, the arc-shaped slider is slidably arranged in the arc-shaped slide groove, the L-shaped cantilever is fixed to the arc-shaped slider, and the laser ranging module is symmetrically arranged below the L-shaped cantilever. When the ranging data of the two laser ranging modules are equal, the arc-shaped slider and the arc-shaped slide groove remain relatively stationary.

[0010] When the distance measurement data of the two laser ranging modules are not equal, the arc slider will slide toward the side with longer data until the distance measurement data of the two laser ranging modules are equal (the difference is within a certain range). Through the above negative feedback adjustment, the rolling fork frame and the surface to be processed can be made perpendicular, thereby avoiding the problem of inaccurate groove angle caused by angle superposition.

[0011] As a further preferred embodiment of the present invention, the swing adjustment assembly includes a swing motor and a swing gear, the swing motor is fixed in the L-shaped cantilever, the swing gear is arranged on the output shaft of the swing motor, the top of the arc-shaped slide groove is provided with an external tooth portion, and the swing gear and the external tooth portion are engaged for transmission.

[0012] By rotating the swing motor, the swing angle of the L-shaped cantilever can be actively adjusted during the processing, so that the rolling fork can remain perpendicular to the processed surface.

[0013] Furthermore, the rolling sensing assembly includes a rolling fork frame and a sensing roller, wherein the rolling fork frame is fixedly connected to the L-shaped cantilever, and the sensing roller is rotatably arranged at the bottom of the rolling fork frame, and the sensing roller is in rolling contact with the surface of the profile workpiece; The contact position between the induction roller and the profile workpiece and the laser cutting processing position coincide with each other in the axial projection of the profile workpiece; The contact position between the induction roller and the profile workpiece coincides with the center of the arc-shaped slideway in the axial projection of the profile workpiece.

[0014] Preferably, the lifting assembly includes a lifting guide rail and a lifting slide, the lifting guide rail is symmetrically arranged on the frame, and the lifting slide is slidably arranged on the lifting guide rail.

[0015] As a further preferred embodiment of the present invention, the longitudinal pressure assembly includes a spring seat and a pressure spring, the spring seats are respectively arranged on the lifting slide and the frame, and the pressure spring is arranged between the two spring seats.

[0016] The induction roller can maintain rolling contact with the surface of the profile workpiece under the elastic force of the pressure spring, thereby achieving the technical effect of automatically adjusting the height of the L-shaped cantilever without the need to pre-input the shape parameters and processing trajectory parameters of the profile workpiece.

[0017] Furthermore, the workpiece clamping assembly includes a workpiece rotating motor and a workpiece clamping mechanism. The workpiece rotating motor is arranged in a frame, and the workpiece clamping mechanism is arranged on the workpiece rotating motor. The workpiece clamping mechanism can clamp the profile workpiece.

[0018] Furthermore, the tool preset assembly includes a transverse movement assembly and a groove angle adjustment assembly, the transverse movement assembly is arranged on the L-shaped cantilever, and the groove angle adjustment assembly is arranged on the transverse movement assembly.

[0019] The processing angle of the groove can be adjusted and preset by the groove angle adjustment component, and the processing position of the groove can be adjusted and preset by the transverse movement component.

[0020] Preferably, the transverse movement assembly includes a transverse movement track, a transverse movement slide and an L-shaped hanging plate. The transverse movement track is symmetrically arranged on the L-shaped cantilever, the transverse movement slide is engaged and slidably arranged on the transverse movement track, and the L-shaped hanging plate is arranged on the transverse movement slide.

[0021] As a further preferred embodiment of the present invention, the groove angle adjustment assembly includes a torsion motor, a mounting seat and a laser, the torsion motor is arranged on the L-shaped hanging plate, the mounting seat is arranged on the torsion motor, and the laser is adjustably arranged in the mounting seat.

[0022] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The outer diameter sensing lifting mechanism can automatically sense the equivalent diameter of the current cutting position and automatically adjust the height of the laser; the self-swinging vertical mechanism can keep the laser and the processed surface perpendicular, thereby ensuring the correct angle of the groove.

[0023] (2) When the distance measurement data of the two laser ranging modules are not equal, the arc slider will slide toward the side with longer data until the distance measurement data of the two laser ranging modules are equal (the difference is within a certain range). Through the above negative feedback adjustment, the rolling fork frame and the surface to be processed can be made perpendicular, thereby avoiding the problem of inaccurate groove angle caused by angle superposition.

[0024] (3) Through the rotation of the swing motor, the swing angle of the L-shaped cantilever can be actively adjusted during the processing process, so that the rolling fork can remain perpendicular to the processed surface.

[0025] (4) The induction roller can maintain rolling contact with the surface of the profile workpiece under the elastic force of the pressure spring, thereby achieving the technical effect of automatically adjusting the height of the L-shaped cantilever without pre-inputting the shape parameters and processing trajectory parameters of the profile workpiece.

[0026] (5) The processing angle of the groove can be adjusted and preset through the groove angle adjustment component, and the processing position of the groove can be adjusted and preset through the transverse movement component. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a laser cutting device for part bevels proposed by the present invention; Figure 2 This is a front view of a laser cutting device for part bevels proposed by the present invention; Figure 3 This is a right side view of a laser cutting device for part bevels proposed by the present invention; Figure 4 for Figure 3 A cross-sectional view along the cutting line AA; Figure 5 for Figure 4 A cross-sectional view along the cutting line BB; Figure 6 for Figure 4 A partial enlarged view of point Ⅰ in the middle; Figure 7 for Figure 5 A partial enlarged view of the middle II; Figure 8 for Figure 4 A partial enlarged view of point III in the middle; Figure 9 This is a schematic diagram of the landing point of the laser ranging module.

[0028] Among them, 1. outer diameter sensing lifting mechanism, 2. self-swinging vertical mechanism, 3. workpiece clamping assembly, 4. tool preset assembly, 5. frame, 6. lifting assembly, 7. longitudinal pressure assembly, 8. rolling sensing assembly, 9. lifting guide rail, 10. lifting slide, 11. spring seat, 12. pressure spring, 13. rolling fork frame, 14. induction roller, 15. arc swing assembly, 16. laser ranging module, 17. arc slide, 18. arc slider, 19. L-shaped cantilever, 20. workpiece rotating motor, 21. workpiece clamping mechanism, 22. profile workpiece, 23. transverse movement assembly, 24. groove angle adjustment assembly, 25. transverse movement track, 26. transverse movement slide, 27. L-shaped hanging plate, 28. torsion motor, 29. mounting seat, 30. laser, 31. swing adjustment assembly, 32. swing motor, 33. swing gear, 34. external tooth portion.

[0029] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0032] like Figures 1 to 8 As shown, the present invention proposes a laser cutting device for part bevels, including an outer diameter sensing lifting mechanism 1, a self-swinging vertical mechanism 2, a workpiece clamping assembly 3, a tool preset assembly 4 and a frame 5. The outer diameter sensing lifting mechanism 1 includes a lifting assembly 6, a longitudinal pressure assembly 7 and a rolling sensing assembly 8. The lifting assembly 6 is arranged on the frame 5, the longitudinal pressure assembly 7 is arranged between the lifting assembly 6 and the frame 5, the self-swinging vertical mechanism 2 is arranged on the lifting assembly 6, the rolling sensing assembly 8 is arranged on the self-swinging vertical mechanism 2, the workpiece clamping assembly 3 is arranged on the frame 5, and the tool preset assembly 4 is arranged on the self-swinging vertical mechanism 2; the self-swinging vertical mechanism 2 includes an arc swing assembly 15, a laser ranging module 16 and a swing adjustment assembly 31, the arc swing assembly 15 is arranged on the lifting assembly 6, and the swing adjustment assembly 31 and the laser ranging module 16 are arranged on the arc swing assembly 15.

[0033] The outer diameter sensing lifting mechanism 1 can automatically sense the equivalent diameter of the current cutting position and automatically adjust the height of the laser 30; the self-swinging vertical mechanism 2 can keep the laser 30 and the processed surface perpendicular, thereby ensuring the correct angle of the groove.

[0034] The arc-shaped swing assembly 15 includes an arc-shaped slide 17, an arc-shaped slider 18 and an L-shaped cantilever 19. The arc-shaped slide 17 is provided on the lifting assembly 6, the arc-shaped slider 18 is slidably provided in the arc-shaped slide 17, the L-shaped cantilever 19 is fixed to the arc-shaped slider 18, and the laser ranging module 16 is symmetrically provided below the L-shaped cantilever 19. When the ranging data of the two laser ranging modules 16 are equal, the arc-shaped slider 18 and the arc-shaped slide 17 remain relatively stationary.

[0035] When the distance measurement data of the two laser ranging modules 16 are not equal, the arc-shaped slider 18 will slide toward the side with longer data until the distance measurement data of the two laser ranging modules 16 are equal (the difference is within a certain range). Through the above-mentioned negative feedback adjustment, the rolling fork frame 13 and the surface to be processed can be made perpendicular, thereby avoiding the problem of inaccurate groove angle caused by angle superposition.

[0036] The swing adjustment assembly 31 includes a swing motor 32 and a swing gear 33. The swing motor 32 is fixed to the L-shaped cantilever 19. The swing gear 33 is arranged on the output shaft of the swing motor 32. The top of the arc-shaped slide groove 17 is provided with an external tooth portion 34. The swing gear 33 and the external tooth portion 34 are engaged for transmission.

[0037] By rotating the swing motor 32 , the swing angle of the L-shaped cantilever 19 can be actively adjusted during the machining process, so that the rolling fork 13 can remain perpendicular to the machined surface.

[0038] The rolling sensing assembly 8 includes a rolling fork 13 and a sensing roller 14. The rolling fork 13 is fixed to the L-shaped cantilever 19. The sensing roller 14 is rotatably arranged at the bottom of the rolling fork 13. The sensing roller 14 is in rolling contact with the surface of the profile workpiece 22. The contact position between the induction roller 14 and the profile workpiece 22 and the laser cutting processing position coincide with the axial projection of the profile workpiece 22; The contact position between the induction roller 14 and the profile workpiece 22 coincides with the center of the arc-shaped chute 17 in the axial projection of the profile workpiece 22 .

[0039] The lifting assembly 6 includes a lifting guide rail 9 and a lifting slide 10. The lifting guide rail 9 is symmetrically arranged on the frame 5, and the lifting slide 10 is slidably arranged on the lifting guide rail 9.

[0040] The longitudinal pressure assembly 7 includes a spring seat 11 and a pressure spring 12 . The spring seat 11 is respectively arranged on the lifting slide 10 and the frame 5 , and the pressure spring 12 is arranged between the two spring seats 11 .

[0041] Under the elastic force of the pressure spring 12, the induction roller 14 can maintain rolling contact with the surface of the profile workpiece 22, thereby achieving the technical effect of automatically adjusting the height of the L-shaped cantilever 19 without pre-inputting the shape parameters and processing trajectory parameters of the profile workpiece 22.

[0042] The workpiece clamping assembly 3 includes a workpiece rotating motor 20 and a workpiece clamping mechanism 21 . The workpiece rotating motor 20 is disposed in the frame 5 . The workpiece clamping mechanism 21 is disposed on the workpiece rotating motor 20 . The workpiece clamping mechanism 21 can clamp the profile workpiece 22 .

[0043] The tool preset assembly 4 includes a transverse movement assembly 23 and a groove angle adjustment assembly 24 . The transverse movement assembly 23 is arranged on the L-shaped cantilever 19 , and the groove angle adjustment assembly 24 is arranged on the transverse movement assembly 23 .

[0044] The processing angle of the groove can be adjusted and preset by the groove angle adjustment component 24, and the processing position of the groove can be adjusted and preset by the transverse movement component 23.

[0045] The transverse movement assembly 23 includes a transverse movement rail 25, a transverse movement slide 26 and an L-shaped hanging plate 27. The transverse movement rail 25 is symmetrically arranged on the L-shaped cantilever 19, the transverse movement slide 26 is engaged and slidably arranged on the transverse movement rail 25, and the L-shaped hanging plate 27 is arranged on the transverse movement slide 26.

[0046] The groove angle adjustment assembly 24 includes a torsion motor 28 , a mounting seat 29 and a laser 30 . The torsion motor 28 is disposed on the L-shaped hanging plate 27 , the mounting seat 29 is disposed on the torsion motor 28 , and the laser 30 is adjustably disposed in the mounting seat 29 .

[0047] like Figure 9 As shown, the sensing roller 14 and the surface of the profile workpiece 22 are in rolling contact, and the laser ranging modules 16 are symmetrically arranged on both sides of the sensing roller 14. The light from the laser ranging modules 16 falls on both sides of the contact point between the sensing roller 14 and the profile workpiece 22. Since the distance measurement data of the two laser ranging modules 16 are equal in the equilibrium state, the central axis of the sensing roller 14 is located on the perpendicular bisector (the vertical dot-dash line in the figure) of the two light from the laser ranging modules 16. If the distance measurement data of the two laser ranging modules 16 are not equal (the difference exceeds a certain threshold), the swing adjustment component 31 can make the arc-shaped slider 18 slide along the arc-shaped slide groove 17 toward the side with the longer distance measurement data until the distance measurement data of the two laser ranging modules 16 are equal (the difference is within a certain threshold). As shown in part (a) of the figure, the processing area is located on the plane of the profile workpiece 22. At this time, the contact point between the inductive roller 14 and the profile workpiece 22 is located at the center of the distance measurement points of the two laser distance measurement modules 16. At this time, because the light from the two laser distance measurement modules 16 coincides with the surface of the profile workpiece 22, the rolling fork 13 and the processed surface of the profile workpiece 22 can be ensured to be perpendicular. As shown in part (b) of the figure, the processing area is located in the corner area of ​​the profile workpiece 22. At this time, there is a temporary misalignment between the light points of the two laser ranging modules 16 and the surface of the profile workpiece 22. However, since there is generally a rounded transition at the corner of the pipe, according to the characteristic that "the perpendicular bisector of the line connecting two points on the arc must pass through the center of the circle", the rolling fork frame 13 and the processed surface of the profile workpiece 22 can still be made perpendicular.

[0048] When in use, the user first needs to clamp and fix the profile workpiece 22 through the workpiece clamping mechanism 21 so that the central axis of the profile workpiece 22 is parallel to the transverse track 25; then adjust the cutting angle and cutting position of the groove through the tool preset component 4; The relative angle between the laser 30 and the profile workpiece 22 can be changed manually or automatically by twisting the motor 28, the telescopic range of the laser 30 can be adjusted manually or automatically by the mounting seat 29, and the lateral position of the laser 30 can be adjusted manually or automatically by the transverse slide 26.

[0049] After the laser 30 is preset, the laser 30 is turned on and the workpiece rotation motor 20 is started. Since the cross section of the tube remains unchanged and the contact position between the induction roller 14 and the profile workpiece 22 coincides with the center of the arc-shaped chute 17 in the axial projection of the profile workpiece 22, the contact point between the induction roller 14 and the profile workpiece 22 actually represents the processing position of the laser 30. At the same time, through the feedback and automatic adjustment of the self-swinging vertical mechanism 2, the rolling fork 13 can always be kept perpendicular to the processed surface of the profile workpiece 22, thereby avoiding the problem of groove angle error caused by angle superposition. The feedback adjustment process is as follows: The light landing point of the laser ranging module 16 (the point where the light contacts the surface of the profile workpiece 22) is located on both sides of the contact point between the sensing roller 14 and the profile workpiece 22. The distance between the laser ranging module 16 itself and the light landing point can be obtained through the light reflected by the sensing roller 14. If the distance measurement data of the two laser ranging modules 16 are not equal (the difference exceeds a certain threshold), the swing adjustment component 31 can make the arc-shaped slider 18 slide along the arc-shaped slide groove 17 toward the side with the longer distance measurement data until the distance measurement data of the two laser ranging modules 16 are equal (the difference is within a certain threshold). Since the distance measurement data of the two laser distance measurement modules 16 are equal in the equilibrium state, the central axis of the sensor roller 14 will be located at the perpendicular bisector of the two laser distance measurement module 16 light points ( Figure 9 The vertical dotted line in the figure) can thus maintain the verticality between the rolling fork 13 and the processed surface.

[0050] The closer the landing points of the two laser ranging modules 16 are, the higher the ranging accuracy is, and the better the effect of maintaining the groove angle when passing through the corner will be.

[0051] After the bevel cutting is completed, the profile workpiece 22 can be removed by following the reverse steps.

[0052] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0053] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A laser cutting device for part bevels, characterized by: The invention comprises an outer diameter sensing lifting mechanism (1), a self-swinging vertical mechanism (2), a workpiece clamping component (3), a tool preset component (4) and a frame (5), wherein the outer diameter sensing lifting mechanism (1) comprises a lifting component (6), a longitudinal pressure component (7) and a rolling sensing component (8), wherein the lifting component (6) is arranged on the frame (5), the longitudinal pressure component (7) is arranged between the lifting component (6) and the frame (5), the self-swinging vertical mechanism (2) is arranged on the lifting component (6), the rolling sensing component (8) is arranged between the lifting component (6) and the frame (5), The component (8) is arranged on the self-swinging vertical mechanism (2), the workpiece clamping component (3) is arranged on the frame (5), and the tool preset component (4) is arranged on the self-swinging vertical mechanism (2); the self-swinging vertical mechanism (2) includes an arc-shaped swing component (15), a laser distance measurement module (16) and a swing adjustment component (31), the arc-shaped swing component (15) is arranged on the lifting component (6), and the swing adjustment component (31) and the laser distance measurement module (16) are arranged on the arc-shaped swing component (15).

2. The laser cutting device for part bevel according to claim 1, characterized in that: The arc-shaped swing component (15) comprises an arc-shaped slide (17), an arc-shaped slider (18) and an L-shaped cantilever (19), wherein the arc-shaped slide (17) is provided on the lifting component (6), the arc-shaped slider (18) is slidably provided in the arc-shaped slide (17), the L-shaped cantilever (19) is fixed to the arc-shaped slider (18), and the laser ranging module (16) is symmetrically provided below the L-shaped cantilever (19). When the ranging data of the two laser ranging modules (16) are equal, the arc-shaped slider (18) and the arc-shaped slide (17) remain relatively stationary.

3. The laser cutting device for part bevel according to claim 2, characterized in that: The swing adjustment assembly (31) includes a swing motor (32) and a swing gear (33), wherein the swing motor (32) is fixed to the L-shaped cantilever (19), and the swing gear (33) is arranged on the output shaft of the swing motor (32). The top of the arc-shaped slide groove (17) is provided with an external tooth portion (34), and the swing gear (33) and the external tooth portion (34) are meshed for transmission.

4. The laser cutting device for part bevel according to claim 3, characterized in that: The rolling sensing assembly (8) includes a rolling fork frame (13) and a sensing roller (14), wherein the rolling fork frame (13) is fixed to the L-shaped cantilever (19), and the sensing roller (14) is rotatably arranged at the bottom of the rolling fork frame (13), and the sensing roller (14) is in rolling contact with the surface of the profile workpiece (22); The contact position between the induction roller (14) and the profile workpiece (22) and the laser cutting processing position coincide with the axial projection of the profile workpiece (22); The contact position between the induction roller (14) and the profile workpiece (22) coincides with the center of the arc-shaped chute (17) in the axial projection of the profile workpiece (22).

5. The laser cutting device for part bevel according to claim 4, characterized in that: The lifting assembly (6) comprises a lifting guide rail (9) and a lifting slide plate (10), wherein the lifting guide rail (9) is symmetrically arranged on the frame (5), and the lifting slide plate (10) is slidably arranged on the lifting guide rail (9).

6. The laser cutting device for part bevel according to claim 5, characterized in that: The longitudinal pressure assembly (7) comprises a spring seat (11) and a pressure spring (12), wherein the spring seat (11) is respectively arranged on the lifting slide (10) and the frame (5), and the pressure spring (12) is arranged between the two spring seats (11).

7. The laser cutting device for part bevel according to claim 6, characterized in that: The workpiece clamping assembly (3) comprises a workpiece rotating motor (20) and a workpiece clamping mechanism (21), wherein the workpiece rotating motor (20) is arranged in a frame (5), and the workpiece clamping mechanism (21) is arranged on the workpiece rotating motor (20), and the workpiece clamping mechanism (21) is capable of clamping a profile workpiece (22).

8. The laser cutting device for part bevel according to claim 7, characterized in that: The tool preset assembly (4) comprises a transverse movement assembly (23) and a groove angle adjustment assembly (24); the transverse movement assembly (23) is arranged on the L-shaped cantilever (19); and the groove angle adjustment assembly (24) is arranged on the transverse movement assembly (23).

9. The laser cutting device for part bevel according to claim 8, characterized in that: The transverse moving assembly (23) comprises a transverse moving track (25), a transverse moving slide (26) and an L-shaped hanging plate (27), wherein the transverse moving track (25) is symmetrically arranged on the L-shaped cantilever (19), the transverse moving slide (26) is engaged and slidably arranged on the transverse moving track (25), and the L-shaped hanging plate (27) is arranged on the transverse moving slide (26).

10. The laser cutting device for part bevel according to claim 9, characterized in that: The groove angle adjustment assembly (24) comprises a torsion motor (28), a mounting seat (29) and a laser (30), wherein the torsion motor (28) is arranged on the L-shaped hanging plate (27), the mounting seat (29) is arranged on the torsion motor (28), and the laser (30) is adjustably arranged in the mounting seat (29).

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