A laser cutting apparatus for beveling a part

Abstract

The application belongs to the technical field of laser cutting processing, and particularly relates to a laser cutting equipment for part groove, which comprises an outer diameter induction lifting mechanism, a self-swinging vertical mechanism, a workpiece clamping assembly, a tool preset 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 induction assembly is arranged on the self-swinging vertical mechanism. The application proposes the core requirement that the rolling fork needs to be perpendicular to the machined surface, angle recognition of the L-shaped cantilever is carried out through the distance measurement data of two groups of laser distance measurement modules, and the rolling fork is always located on the perpendicular bisector of two distance measurement points.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of laser cutting processing, and particularly relates to a laser cutting equipment for part groove. BACKGROUND

[0002] The groove refers to a certain geometric shape groove processed at a welding part of a welding member, and the main purpose is to ensure welding strength and quality, and the groove can be processed in a mechanical processing, gas cutting, laser cutting and the like; the laser cutting is widely applied in the above working conditions due to the advantages of good cutting quality, high speed, less debris, non-contact type, high flexibility and the like.

[0003] A general pipe groove processing mechanism (such as the patent scheme with the publication number CN115194348B) fixes the pipe on a chuck capable of rotating, then adjusts the processing position through horizontal movement and lifting, and still needs to add a motor for adjusting the angle of the laser at the end to realize the setting of the groove angle. This conventional processing mode has the following problems:

[0004] Firstly, the number of active control motion axes is relatively large, and the motion of each axis needs to be controlled by a servo motor, so that the whole equipment structure is relatively complex, and the number of high-cost components such as drivers and servo motors is relatively large.

[0005] Secondly, since the motion of each axis needs to be actively controlled, the model data and processing data must be imported into the machine first, and the corresponding tool path is calculated by software, which is suitable for single product mass processing, but not suitable for flexible processing scenes of different models.

[0006] Thirdly, for non-standard round pipes (such as polygonal pipes), if only the rotation of the profile workpiece is used to adjust the cutting position, the groove angle cannot be guaranteed to be correct, because the actual angle of the groove is related to the inclination angle of the laser itself, and also needs to keep the adjustment plane of the torsion motor perpendicular to the surface to be processed of the profile workpiece, otherwise the cumulative angle between the two places will change the groove angle.

[0007] In order to solve this problem, the prior art often adds an axial movement in the front and rear direction (such as the patent scheme with the publication number CN223028739U) on the basis of the above-mentioned comparative document, so that the groove is processed by moving the laser forward and backward while keeping the profile workpiece stationary when processing the flat part of the pipe. This solution not only increases the complexity of the structure, but also needs to perform tool setting on the workpiece after clamping, further increasing the complexity of the operation steps. SUMMARY

[0008] In view of the above, in order to overcome the defects of the prior art, the present application provides a laser cutting equipment for part groove, the rolling fork frame in rolling contact with the profile workpiece automatically realizes the lifting position adjustment of the lifting slide during the machining process, and the size parameters of the profile workpiece do not need to be input in advance, which is suitable for flexible machining scene.

[0009] In order to solve the problem of angle change of the groove when the profile workpiece rotates, the present application proposes the core requirement that the rolling fork frame needs to be perpendicular to the machined surface, and the angle recognition of the L-shaped cantilever is realized through the ranging data of the two laser ranging modules, so that the rolling fork frame is always located on the perpendicular bisector of the two ranging points. Through the relative stability of angle and distance, the consistency of the groove angle can be automatically maintained when machining different profile pipes.

[0010] The technical scheme adopted by the present application is as follows: the present application provides a laser cutting equipment for part groove, which comprises an outer diameter induction lifting mechanism, a self-swinging vertical mechanism, a workpiece clamping assembly, a tool preset 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, the rolling induction assembly is arranged on the self-swinging vertical mechanism, the workpiece clamping assembly is arranged on the rack, and the tool preset assembly is arranged on the self-swinging vertical mechanism; the self-swinging vertical mechanism comprises an arc swing assembly, a laser ranging module and a swing adjusting assembly, the arc swing assembly is arranged on the lifting assembly, and the swing adjusting assembly and the laser ranging module are arranged on the arc swing assembly.

[0011] The outer diameter induction 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 perpendicular to the machined surface, thereby ensuring the correct angle of the groove.

[0012] As a preferred, the arc swing assembly comprises an arc-shaped sliding groove, an arc-shaped sliding block and an L-shaped cantilever, the arc-shaped sliding groove is arranged on the lifting assembly, the arc-shaped sliding block is slidingly arranged in the arc-shaped sliding groove, the L-shaped cantilever is fixedly connected to the arc-shaped sliding block, 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 sliding block and the arc-shaped sliding groove remain relatively stationary.

[0013] When the ranging data of the two laser ranging modules are not equal, the arc-shaped sliding block will swing and slide towards the side with longer data until the ranging data of the two laser ranging modules are equal (within a certain range), through the above negative feedback adjustment, the rolling fork frame can be perpendicular to the machined surface, thereby avoiding the problem of inaccurate groove angle caused by angle superposition.

[0014] As a further preferred embodiment of the present application, the swing adjusting assembly comprises a swing motor and a swing gear, the swing motor is fixed to the L-shaped cantilever, the swing gear is arranged on the output shaft of the swing motor, the top of the arc-shaped sliding groove is provided with an external tooth part, and the swing gear and the external tooth part are in meshing transmission.

[0015] Through the rotation of the swing motor, the swing angle of the L-shaped cantilever can be actively adjusted during the machining process, so that the rolling fork can be kept perpendicular to the machined surface.

[0016] Further, the rolling sensing assembly comprises a rolling fork and a sensing roller, the rolling fork is fixed to the L-shaped cantilever, and the sensing roller is rotatably arranged at the bottom of the rolling fork, and the sensing roller and the surface of the profile workpiece are in rolling contact.

[0017] The contact position of the sensing roller and the profile workpiece coincides with the machining position of the laser cutting in the axial projection of the profile workpiece.

[0018] The contact position of the sensing roller and the profile workpiece coincides with the center of the arc-shaped sliding groove in the axial projection of the profile workpiece.

[0019] As a preferred embodiment, the lifting assembly comprises a lifting guide rail and a lifting slide plate, the lifting guide rail is symmetrically arranged on the rack, and the lifting slide plate is slidingly arranged on the lifting guide rail.

[0020] As a further preferred embodiment of the present application, the longitudinal pressing assembly comprises a spring seat and a pressing spring, the spring seat is respectively arranged on the lifting slide plate and the rack, and the pressing spring is arranged between the two spring seats.

[0021] The sensing roller can keep rolling contact with the surface of the profile workpiece under the elastic force of the pressing spring, thereby realizing the technical effect of automatically adjusting the height of the L-shaped cantilever without pre-inputting the shape parameters and machining trajectory parameters of the profile workpiece.

[0022] Further, the workpiece clamping assembly comprises a workpiece rotating motor and a workpiece clamping mechanism, the workpiece rotating motor is arranged in the rack, the workpiece clamping mechanism is arranged on the workpiece rotating motor, and the workpiece clamping mechanism can clamp the profile workpiece.

[0023] Further, the tool preset assembly comprises a horizontal moving assembly and a bevel angle adjusting assembly, the horizontal moving assembly is arranged on the L-shaped cantilever, and the bevel angle adjusting assembly is arranged on the horizontal moving assembly.

[0024] The bevel angle adjusting assembly can adjust and preset the machining angle of the bevel, and the horizontal moving assembly can adjust and preset the machining position of the bevel.

[0025] As preferred, the horizontal moving assembly comprises a horizontal moving rail, a horizontal moving slide and an L-shaped hanging plate, the horizontal moving rail is symmetrically arranged on the L-shaped cantilever, the horizontal moving slide is slidingly arranged on the horizontal moving rail, and the L-shaped hanging plate is arranged on the horizontal moving slide.

[0026] As further preferred of the present application, the bevel angle adjusting assembly comprises 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.

[0027] The present application has the following beneficial effects by adopting the above structure:

[0028] (1) The outer diameter induction lifting mechanism can automatically induce the equivalent diameter of the current cutting position and automatically adjust the height of the laser, and the self-swinging vertical mechanism can keep the laser and the machined surface vertical, thereby ensuring the correct angle of the bevel.

[0029] (2) When the ranging data of the two laser ranging modules are not equal, the arc-shaped slide block will swing and slide towards the side with longer data until the ranging data of the two laser ranging modules are equal (within a certain range), and through the above negative feedback adjustment, the rolling fork can be kept perpendicular to the machined surface, thereby avoiding the problem of inaccurate bevel angle caused by angle superposition.

[0030] (3) Through the rotation of the swing motor, the swing angle of the L-shaped cantilever can be actively adjusted during the machining process, so that the rolling fork can be kept vertical to the machined surface.

[0031] (4) The induction roller can keep rolling contact with the surface of the profile workpiece under the elastic force of the pressure spring, thereby realizing the technical effect of automatically adjusting the height of the L-shaped cantilever without pre-inputting the shape parameters and machining trajectory parameters of the profile workpiece.

[0032] (5) The bevel angle adjusting assembly can adjust and preset the machining angle of the bevel, and the horizontal moving assembly can adjust and preset the machining position of the bevel. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A perspective view of a part bevel laser cutting device is provided for the present application;

[0034] Figure 2 A front view of a part bevel laser cutting device is provided for the present application;

[0035] Figure 3 A right view of a part bevel laser cutting device is provided for the present application;

[0036] Figure 4 Fig. 2 is a sectional view along the section line A-A in Fig. 1; Figure 3 Fig. 3 is a sectional view along the section line B-B in Fig. 1;

[0037] Figure 5 Fig. 4 is a sectional view along the section line C-C in Fig. 1; Figure 4 Fig. 5 is a sectional view along the section line D-D in Fig. 1;

[0038] Figure 6 Fig. 6 is a sectional view along the section line E-E in Fig. 1; Figure 4 Fig. 7 is an enlarged view of part I in Fig. 6; Fig. 8 is an enlarged view of part II in Fig. 6;

[0039] Fig. 9 is an enlarged view of part III in Fig. 6; Figure 7 Fig. 10 is an enlarged view of part IV in Fig. 6; Figure 5 Fig. 11 is an enlarged view of part V in Fig. 6; Fig. 12 is an enlarged view of part VI in Fig. 6;

[0040] Fig. 13 is an enlarged view of part VII in Fig. 6; Figure 8 Fig. 14 is a schematic view of the landing position of the laser ranging module. Figure 4 Fig. 15 is a schematic view of the landing position of the laser ranging module. Fig. 16 is a schematic view of the landing position of the laser ranging module.

[0041] Fig. 17 is a schematic view of the landing position of the laser ranging module. Figure 9 Fig. 18 is a schematic view of the landing position of the laser ranging module. Fig. 19 is a schematic view of the landing position of the laser ranging module.

[0042] Fig. 19 is a schematic view of the landing position of the laser ranging module.

[0043] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0045] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] As shown in Figures 1-8 The present application provides a laser cutting device for part groove, which comprises an outer diameter induction lifting mechanism 1, a self-swinging vertical mechanism 2, a workpiece clamping assembly 3, a tool preset assembly 4 and a rack 5. The outer diameter induction lifting mechanism 1 comprises a lifting assembly 6, a longitudinal pressure assembly 7 and a rolling induction assembly 8. The lifting assembly 6 is arranged on the rack 5, the longitudinal pressure assembly 7 is arranged between the lifting assembly 6 and the rack 5, the self-swinging vertical mechanism 2 is arranged on the lifting assembly 6, the rolling induction assembly 8 is arranged on the self-swinging vertical mechanism 2, the workpiece clamping assembly 3 is arranged on the rack 5, and the tool preset assembly 4 is arranged on the self-swinging vertical mechanism 2. The self-swinging vertical mechanism 2 comprises an arc-shaped swinging assembly 15, a laser ranging module 16 and a swinging adjustment assembly 31. The arc-shaped swinging assembly 15 is arranged on the lifting assembly 6, and the swinging adjustment assembly 31 and the laser ranging module 16 are arranged on the arc-shaped swinging assembly 15.

[0047] The outer diameter induction 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 machined surface vertical, thereby ensuring the correct angle of the groove.

[0048] The arc-shaped swinging assembly 15 comprises an arc-shaped sliding groove 17, an arc-shaped sliding block 18 and an L-shaped cantilever 19. The arc-shaped sliding groove 17 is arranged on the lifting assembly 6, the arc-shaped sliding block 18 is slidingly arranged in the arc-shaped sliding groove 17, and the L-shaped cantilever 19 is fixedly connected to the arc-shaped sliding block 18. The laser ranging module 16 is symmetrically arranged below the L-shaped cantilever 19. When the ranging data of the two laser ranging modules 16 are equal, the arc-shaped sliding block 18 and the arc-shaped sliding groove 17 remain relatively stationary.

[0049] When the ranging data of the two laser ranging modules 16 are not equal, the arc-shaped sliding block 18 will swing and slide towards the side with longer data until the ranging data of the two laser ranging modules 16 are equal (within a certain range). Through the above negative feedback adjustment, the rolling fork 13 and the machined surface can be kept perpendicular, thereby avoiding the problem of inaccurate groove angle caused by angle superposition.

[0050] The swing adjusting assembly 31 comprises a swing motor 32 and a swing gear 33, the swing motor 32 is fixedly connected 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 sliding groove 17 is provided with an external tooth portion 34, and the swing gear 33 and the external tooth portion 34 are in meshing transmission.

[0051] Through the rotation of 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 be kept perpendicular to the machined surface.

[0052] The rolling sensing assembly 8 comprises the rolling fork 13 and the sensing roller 14, the rolling fork 13 is fixedly connected to the L-shaped cantilever 19, and the sensing roller 14 is rotatably arranged at the bottom of the rolling fork 13, and the sensing roller 14 and the surface of the profile workpiece 22 are in rolling contact.

[0053] The contact position of the sensing roller 14 and the profile workpiece 22 coincides with the machining position of the laser cutting in the axial projection of the profile workpiece 22.

[0054] The contact position of the sensing roller 14 and the profile workpiece 22 coincides with the center of the arc-shaped sliding groove 17 in the axial projection of the profile workpiece 22.

[0055] The lifting assembly 6 comprises a lifting guide rail 9 and a lifting sliding plate 10, the lifting guide rail 9 is symmetrically arranged on the rack 5, and the lifting sliding plate 10 is slidingly arranged on the lifting guide rail 9.

[0056] The longitudinal pressing assembly 7 comprises a spring seat 11 and a pressing spring 12, the spring seat 11 is arranged on the lifting sliding plate 10 and the rack 5 respectively, and the pressing spring 12 is arranged between the two spring seats 11.

[0057] The sensing roller 14 can keep rolling contact with the surface of the profile workpiece 22 under the elastic force of the pressing spring 12, so as to realize the technical effect of automatically adjusting the height of the L-shaped cantilever 19 without pre-inputting the shape parameters and machining track parameters of the profile workpiece 22.

[0058] The workpiece clamping assembly 3 comprises a workpiece rotating motor 20 and a workpiece clamping mechanism 21, the workpiece rotating motor 20 is arranged in the rack 5, the workpiece clamping mechanism 21 is arranged on the workpiece rotating motor 20, and the workpiece clamping mechanism 21 can clamp the profile workpiece 22.

[0059] The tool preset assembly 4 comprises a transverse moving assembly 23 and a bevel angle adjusting assembly 24, the transverse moving assembly 23 is arranged on the L-shaped cantilever 19, and the bevel angle adjusting assembly 24 is arranged on the transverse moving assembly 23.

[0060] The bevel angle adjusting assembly 24 can adjust and preset the machining angle of the bevel, and the transverse moving assembly 23 can adjust and preset the machining position of the bevel.

[0061] The lateral movement assembly 23 includes a lateral movement track 25, a lateral movement slide plate 26, and an L-shaped hanging plate 27. The lateral movement track 25 is symmetrically arranged on the L-shaped cantilever 19. The lateral movement slide plate 26 is engaged and slidably arranged on the lateral movement track 25. The L-shaped hanging plate 27 is arranged on the lateral movement slide plate 26.

[0062] The bevel angle adjustment assembly 24 includes a torsion motor 28, a mounting base 29, and a laser 30. The torsion motor 28 is mounted on an L-shaped hanging plate 27, the mounting base 29 is mounted on the torsion motor 28, and the laser 30 is adjustablely mounted in the mounting base 29.

[0063] like Figure 9 As shown, the induction roller 14 and the profile workpiece 22 are in rolling contact. The laser ranging module 16 is symmetrically arranged on both sides of the induction roller 14. The light falling point of the laser ranging module 16 is located on both sides of the contact point between the induction roller 14 and the profile workpiece 22. Since the ranging data of the two laser ranging modules 16 are equal in the balanced state, the central axis of the induction roller 14 is located on the perpendicular bisector of the light falling point of the two laser ranging modules 16 (the vertical dotted line in the figure).

[0064] If the ranging 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 slider 18 slide along the arc groove 17 toward the side with the longer ranging data until the ranging data of the two laser ranging modules 16 are equal (the difference is within a certain threshold range).

[0065] As shown in part (a) of the figure, the processing area is located in the planar area of ​​the profile workpiece 22. At this time, the contact point between the sensing roller 14 and the profile workpiece 22 is located at the center of the ranging points of the two laser ranging modules 16. Since the light falling point of the two laser ranging modules 16 coincides with the surface of the profile workpiece 22, it can be ensured that the rolling fork 13 and the processed surface of the profile workpiece 22 are perpendicular.

[0066] 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, the light falling points of the two laser ranging modules 16 do not coincide with the surface of the profile workpiece 22 for a short period of time. However, since there is usually a rounded transition at the corner of the pipe, according to the characteristic that "the perpendicular bisector of the line connecting two points on an arc must pass through the center of the circle", it is still possible to make the rolling fork 13 and the processed surface of the profile workpiece 22 perpendicular.

[0067] In practical 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 the cutting angle and cutting position of the bevel are adjusted through the tool preset component 4.

[0068] The relative angle between the laser 30 and the profile workpiece 22 can be manually or automatically changed by twisting the motor 28, the extension amplitude of the laser 30 can be manually or automatically adjusted by the mounting seat 29, and the lateral position of the laser 30 can be manually or automatically adjusted by the transverse sliding plate 26.

[0069] After the laser 30 is preset, the laser 30 is turned on and the workpiece rotating motor 20 is started. Since the cross section of the pipe is constant, and the contact position of the induction roller 14 and the profile workpiece 22 coincides with the center of the arc-shaped sliding groove 17 in the axial projection of the profile workpiece 22, the contact point of the induction roller 14 and the profile workpiece 22 actually represents the processing position of the laser 30.

[0070] 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 bevel angle error caused by angle superposition. The feedback adjustment process is as follows:

[0071] The light spot (the contact point of the light and the surface of the profile workpiece 22) of the laser ranging module 16 is located on both sides of the contact point of the induction roller 14 and the profile workpiece 22. Through the reflected light of the induction roller 14, the distance between the laser ranging module 16 itself and the light spot can be known,

[0072] If the ranging data of the two laser ranging modules 16 are not equal (the difference exceeds a certain threshold value), the arc-shaped sliding block 18 can be made to slide along the arc-shaped sliding groove 17 towards the side with longer ranging data through the swing adjustment assembly 31 until the ranging data of the two laser ranging modules 16 are equal (the difference is within a certain threshold value).

[0073] Since the ranging data of the two laser ranging modules 16 are equal in the balanced state, the central axis of the induction roller 14 will be located on the perpendicular bisector of the light spots of the two laser ranging modules 16 (the vertical dotted line in the middle), so that the verticality between the rolling fork 13 and the processed surface can be maintained. Figure 9

[0074] The closer the light spots of the two laser ranging modules 16 are, the higher the ranging accuracy is, and the better the effect of maintaining the bevel angle during the corner turning will be.

[0075] After the bevel cutting is completed, the profile workpiece 22 can be removed according to the reverse steps.

[0076] ​It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; thus the use of any

[0077] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the application.

Claims

1. A laser cutting apparatus for beveling a part, characterized by: The utility model relates to a kind of laser cutting machine, including outer diameter induction lifting mechanism (1), self-swing vertical mechanism (2), workpiece clamping assembly (3), tool preset assembly (4) and rack (5), the outer diameter induction lifting mechanism (1) includes lifting assembly (6), longitudinal pressure assembly (7) and rolling induction assembly (8), the lifting assembly (6) is located on rack (5), the longitudinal pressure assembly (7) is located between lifting assembly (6) and rack (5), the self-swing vertical mechanism (2) is located on lifting assembly (6), the rolling induction assembly (8) is located on self-swing vertical mechanism (2), the workpiece clamping assembly (3) is located on rack (5), the tool preset assembly (4) is located on self-swing vertical mechanism (2);The self-swing vertical mechanism (2) includes arc swing assembly (15), laser ranging module (16) and swing adjusting assembly (31), the arc swing assembly (15) is located on lifting assembly (6), the swing adjusting assembly (31) and laser ranging module (16) are located on arc swing assembly (15); The arc swing assembly (15) includes arc sliding slot (17), arc sliding block (18) and L-shaped cantilever (19), the arc sliding slot (17) is located on lifting assembly (6), the arc sliding block (18) is slidably arranged in the arc sliding slot (17), the L-shaped cantilever (19) is fixedly connected to the arc sliding block (18), the laser ranging module (16) is symmetrically arranged below the L-shaped cantilever (19), when the ranging data of the two laser ranging modules (16) are equal, the arc sliding block (18) and the arc sliding slot (17) remain relatively stationary, when the ranging data of the two laser ranging modules (16) are not equal, the arc sliding block (18) slides along the arc sliding slot (17) towards the side with longer ranging data; The rolling induction assembly (8) includes rolling fork (13) and induction roller (14), the rolling fork (13) is fixedly connected to the L-shaped cantilever (19), the induction roller (14) is rotatably arranged at the bottom of the rolling fork (13), the induction roller (14) and the surface of the profile workpiece (22) are in rolling contact; The contact position of the induction roller (14) and the profile workpiece (22) coincides with the processing position of laser cutting on the axial projection of the profile workpiece (22); The contact position of the induction roller (14) and the profile workpiece (22) coincides with the center of the arc sliding slot (17) on the axial projection of the profile workpiece (22); The longitudinal pressure assembly (7) includes spring seat (11) and pressure spring (12), the spring seat (11) is respectively arranged on the lifting slide (10) and the rack (5), and the pressure spring (12) is arranged between the two spring seats (11).

2. A laser cutting apparatus for beveling a part as defined in claim 1, wherein: The swing adjusting assembly (31) includes swing motor (32) and swing gear (33), the swing motor (32) is fixedly connected 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 sliding slot (17) is provided with an external tooth portion (34), and the swing gear (33) and the external tooth portion (34) are engaged for transmission.

3. A laser cutting apparatus for beveling a part as defined in claim 2, wherein: The lifting assembly (6) comprises lifting rails (9) and a lifting slide plate (10), the lifting rails (9) are symmetrically arranged on the rack (5), and the lifting slide plate (10) is slidingly arranged on the lifting rails (9).

4. A laser cutting apparatus for beveling a part as defined in claim 3, wherein: The workpiece clamping assembly (3) comprises a workpiece rotating motor (20) and a workpiece clamping mechanism (21), the workpiece rotating motor (20) is arranged in the rack (5), the workpiece clamping mechanism (21) is arranged on the workpiece rotating motor (20), and the workpiece clamping mechanism (21) can clamp the profile workpiece (22).

5. A laser cutting apparatus for beveling a part as defined in claim 4, wherein: The tool preset assembly (4) comprises a horizontal moving assembly (23) and a bevel angle adjusting assembly (24), the horizontal moving assembly (23) is arranged on the L-shaped cantilever (19), and the bevel angle adjusting assembly (24) is arranged on the horizontal moving assembly (23).

6. A laser cutting apparatus for beveling a part as defined in claim 5, wherein: The horizontal moving assembly (23) comprises horizontal moving rails (25), a horizontal moving slide plate (26) and an L-shaped hanging plate (27), the horizontal moving rails (25) are symmetrically arranged on the L-shaped cantilever (19), the horizontal moving slide plate (26) is slidingly arranged on the horizontal moving rails (25) in a clamping mode, and the L-shaped hanging plate (27) is arranged on the horizontal moving slide plate (26).

7. A laser cutting apparatus for beveling a part as defined in claim 6, wherein: The bevel angle adjusting assembly (24) comprises a torsion motor (28), a mounting seat (29) and a laser (30), 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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