A laser adjustment device
By obtaining the thickness value of the metal sheet, determining the target beam quality parameters, controlling the rotation of the stepper motor and galvanometer motor, and adjusting the beam energy distribution, the problem of poor cutting quality caused by the inability to adjust the beam quality parameter M2 was solved, thus improving the quality of laser cutting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JINAN BODOR LASER CO LTD
- Filing Date
- 2023-08-23
- Publication Date
- 2026-07-10
AI Technical Summary
The existing technology suffers from poor cutting quality due to the beam quality parameter M2, which cannot be adjusted after the laser optical path is assembled, thus affecting the cutting quality of the sheet metal.
By obtaining the thickness value of the metal plate, the target beam quality parameters are determined, and the rotation angles of the stepper motor and galvanometer motor are controlled to output laser corresponding to the target beam quality parameters. The energy distribution of the beam spot is adjusted to achieve dynamic adjustment of the beam quality parameter M2.
It improves the quality of laser cutting, adapts to the cutting needs of metal sheets of different thicknesses, and enhances the cutting effect.
Smart Images
Figure CN116851938B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of laser cutting technology, and more particularly to a laser adjustment device. Background Technology
[0002] In laser processing systems, fiber lasers function to provide continuous laser output energy. Furthermore, the beam quality parameter M of traditional lasers... 2 The beam quality parameter M can be determined after the laser optical path is assembled. However, from the perspective of actual processing applications, the beam quality parameter M... 2 It has a very important impact on the quality of sheet metal cutting. Summary of the Invention
[0003] (a) Technical problems to be solved
[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a laser adjustment device, which solves the problem of the beam quality parameter M in the prior art. 2 This leads to technical problems such as poor cutting quality.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, the main technical solutions adopted by the present invention include:
[0007] This invention provides a laser adjustment device, comprising: an acquisition module for acquiring a plate thickness value carrying a current metal plate; a determination module for determining a target beam quality parameter of a laser for cutting the current metal plate corresponding to the plate thickness value; and an output module for outputting a laser beam corresponding to the target beam quality parameter based on the target beam quality parameter.
[0008] In one possible embodiment, the laser conditioning device is applied to a laser processing system, and the laser processing system includes multiple pump sources, a combiner, an intermediate fiber and a QBH fiber head, each of the multiple pump sources being connected to one end of the combiner, and the other end of the combiner being connected via the intermediate fiber and the QBH fiber head, and the intermediate fiber including a first fiber loop wound on the motor shaft of a stepper motor.
[0009] The output module is specifically used to: determine the target rotation angle of the stepper motor shaft corresponding to the target beam quality parameters; control the stepper motor shaft to rotate to the target rotation angle, and output the laser corresponding to the target beam quality parameters after the stepper motor shaft rotates to the target rotation angle.
[0010] In one possible embodiment, the intermediate optical fiber further includes a second optical fiber loop and a third optical fiber loop, and optical fiber clamps are fixedly disposed at the bottom end of the first optical fiber loop and the first side of the second optical fiber loop, a first galvanometer motor is fixedly disposed at the top end of the first optical fiber loop, and a second galvanometer motor is fixedly disposed at the second side of the first optical fiber loop; the laser adjustment device further includes:
[0011] The control module is used to control the rotation of the motor shaft of the first galvanometer motor and the rotation of the motor shaft of the second galvanometer motor respectively when the thickness value of the current metal sheet is greater than or equal to a specified thickness value, so as to adjust the energy distribution of the annular spot of the laser.
[0012] In one possible embodiment, the control module is specifically configured to: acquire the spot parameters of the annular spot; wherein the spot parameters include the coordinates of the spot center and the spot radius; determine the first rotation angle of the motor shaft of the first galvanometer motor based on the X coordinate of the spot center and the spot radius, and control the rotation of the motor shaft of the first galvanometer motor based on the first rotation angle.
[0013] In one possible embodiment, the control module is specifically configured to: determine a second rotation angle of the motor shaft of the second galvanometer motor based on the Y coordinate of the light spot center and the light spot radius, and control the rotation of the motor shaft of the second galvanometer motor based on the second rotation angle.
[0014] In one possible embodiment, both the first rotation angle and the second rotation angle are less than 1°.
[0015] In one possible embodiment, the rotational speed of both the first galvanometer motor and the second galvanometer motor is less than 200 Hz.
[0016] In one possible embodiment, the specified thickness value ranges from 18 to 22 mm.
[0017] In one possible embodiment, both the second and third fiber optic loops are disposed between the first fiber optic loop and the QBH fiber optic head, with the second fiber optic loop being disposed close to the first fiber optic loop.
[0018] (III) Beneficial Effects
[0019] The beneficial effects of this invention are:
[0020] This application provides a laser adjustment device that improves the cutting quality by acquiring the thickness value of a current metal sheet, determining the target beam quality parameter of a laser for cutting the current metal sheet corresponding to the thickness value of the current metal sheet, and outputting a laser corresponding to the target beam quality parameter based on the target beam quality parameter.
[0021] To make the above-mentioned objectives, features and advantages to be achieved by the embodiments of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 A schematic diagram of a laser adjustment device provided in an embodiment of this application is shown;
[0024] Figure 2 A schematic diagram of a laser processing system provided in an embodiment of this application is shown;
[0025] Figure 3A A schematic diagram of a first optical fiber loop in its initial state, provided in an embodiment of this application, is shown.
[0026] Figure 3B A schematic diagram of a first optical fiber coil in a locked state, provided in an embodiment of this application, is shown.
[0027] Figure 4 This illustration shows a schematic diagram of the arrangement of a second fiber optic loop and a third fiber optic loop according to an embodiment of this application;
[0028] Figure 5a This illustration shows a schematic diagram of a beam energy point without deflection provided in an embodiment of this application;
[0029] Figure 5b This illustration shows a schematic diagram of a light spot energy point offset along the positive X-axis according to an embodiment of this application;
[0030] Figure 5c This illustration shows a schematic diagram of a light spot energy point shifted along the negative X-axis according to an embodiment of this application;
[0031] Figure 5d This illustration shows a schematic diagram of a light spot energy point offset along the positive Y-axis according to an embodiment of this application;
[0032] Figure 5e This illustration shows a schematic diagram of a light spot energy point shifted along the negative Y-axis according to an embodiment of this application;
[0033] Figure 6 This illustration shows a schematic diagram of a ring-shaped light spot after continuous interpolation, provided in an embodiment of this application. Detailed Implementation
[0034] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] For existing lasers, besides the beam quality parameter M 2 Besides being unadjustable, the energy distribution of the laser spot is also determined after the laser optical path is assembled (i.e., the energy distribution of the laser spot cannot be adjusted), and the energy distribution of the laser spot also has a very important impact on the quality of plate cutting.
[0036] Based on this, this application provides a laser adjustment device that obtains the thickness value of the current metal sheet, determines the target beam quality parameter of the laser used to cut the current metal sheet corresponding to the thickness value of the current metal sheet, and outputs the laser corresponding to the target beam quality parameter based on the target beam quality parameter, thereby improving the cutting quality compared to existing lasers.
[0037] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.
[0038] Please see Figure 1 , Figure 1 A schematic diagram of a laser adjustment device 100 provided in an embodiment of this application is shown. Figure 1 As shown, the laser adjustment device includes:
[0039] The acquisition module 110 is used to acquire the thickness value of the current metal sheet.
[0040] The determination module 120 is used to determine the target beam quality parameters of the laser used to cut the current metal sheet, which correspond to the sheet thickness value of the current metal sheet.
[0041] The output module 130 is used to output a laser beam corresponding to the target beam quality parameters based on the target beam quality parameters.
[0042] It should be noted that, in practice, the laser adjustment device 100 can be a control device in a laser processing system. For example, the laser adjustment device 100 can be an FPGA chip in the laser processing system.
[0043] It should be understood that the specific sheet material of the current metal sheet can be set according to actual needs, and the embodiments of this application are not limited thereto.
[0044] Optionally, when the thickness of the current metal sheet is less than 20 mm, the current metal sheet is a thin sheet, and when processing the thin sheet, the energy distribution form of Gaussian light can be used; when the thickness of the current metal sheet is greater than or equal to 20 mm, the current metal sheet is a thick sheet, and when processing the thick sheet, the energy distribution form of annular light can be used.
[0045] It should also be understood that the specific process by which the determining module 120 determines the target beam quality parameters of the laser used to cut the current metal sheet corresponding to the sheet thickness value can also be set according to actual needs, and the embodiments of this application are not limited thereto.
[0046] Optionally, a beam quality parameter table can be pre-established. This table can record multiple thickness ranges and the beam quality parameters corresponding to each thickness range. Therefore, after obtaining the thickness value of the current metal sheet, the target thickness range to which the current metal sheet thickness value belongs can be determined first, and the beam quality parameters corresponding to the target thickness range can be used as the target beam quality parameters.
[0047] It should also be understood that the output module 130 outputs laser corresponding to the target beam quality parameters based on the target beam quality parameters, and the specific process can also be set according to actual needs. The embodiments of this application are not limited thereto.
[0048] Optionally, such as Figure 2 As shown, Figure 2 A schematic diagram of a laser processing system provided in an embodiment of this application is shown. Figure 2 As shown, the laser processing system includes multiple pump sources (i.e., pump source 1 to pump source n, where n is a positive integer greater than or equal to 2), a combiner, an intermediate fiber, and a QBH fiber optic connector. Each of the multiple pump sources is connected to one end of the combiner, and the other end of the combiner is connected via the intermediate fiber and the QBH fiber optic connector. The intermediate fiber includes a first fiber loop wound around the motor shaft of a stepper motor (see details...). Figure 3A and Figure 3B The specific number of fiber loops in the first fiber loop should be greater than or equal to 2.
[0049] It should be noted that for the first fiber coil (or the first fiber disk, or the homogenized fiber), the port of its innermost fiber can be used as the connection end to the combiner, or the port of its outermost fiber can be used as the connection end to the combiner.
[0050] Furthermore, when the core diameter of the optical fiber is fixed, the larger the bending radius of the fiber, the larger the divergence angle, and the larger the divergence angle, the higher the beam quality parameter M. 2 Based on this principle, the center of the first optical fiber coil is fixed on the motor shaft of the stepper motor, so that the rotation of the motor shaft of the stepper motor can drive the first optical fiber coil to rotate, thereby adjusting the winding diameter of the optical fiber.
[0051] And, see also Figure 3A and Figure 3B As shown, by winding an active optical fiber around a motor shaft (which can be a stepper motor), the bending diameter of the fiber can be changed by rotating the motor shaft clockwise or counterclockwise, thereby altering the final output M of the laser. 2 And, through comparison Figure 3A The initial state of the optical fiber shown and Figure 3B As can be seen from the locked state of the optical fiber, under the condition that the overall length of the optical fiber remains unchanged, the overall coil diameter of the optical fiber is decreasing as the fiber is wound tighter, from the maximum to the minimum, which can be infinitely adjusted by controlling the rotation angle of the motor shaft.
[0052] Furthermore, the output module 130 is specifically used to: determine the target rotation angle of the stepper motor shaft corresponding to the target beam quality parameter based on a pre-established fitting curve (i.e., the rotation angle between the initial position and the target position where laser light corresponding to the target beam quality parameter can be output. For example, if the target position is a 150-degree clockwise rotation from the initial position of the motor, then the target rotation angle is 150 degrees); wherein, the fitting curve is used to represent the relationship between the beam quality parameter and the rotation angle of the stepper motor shaft; control the stepper motor shaft to rotate to the target rotation angle (for example, if the current position of the motor is a 120-degree clockwise rotation from the initial position, then it can continue to rotate 30 degrees clockwise to reach the target rotation angle), and output laser light corresponding to the target beam quality parameter after the stepper motor shaft rotates to the target rotation angle.
[0053] It should be noted that a fitting curve can be established based on multiple sets of data, each including the rotation angle of the stepper motor shaft and beam quality parameters.
[0054] Therefore, by means of the above technical solution, the embodiments of this application can achieve the beam quality parameter M. 2 Its dynamic adjustment can simultaneously meet the requirements of laser cutting of both thick and thin plates.
[0055] And, see also Figure 2In addition to the first fiber loop, the intermediate optical fiber may also include a second fiber loop and a third fiber loop. The number of fiber loops in the second and third optical fibers can be one or more, and the specific number of fiber loops in the second and third optical fibers can be the same or different.
[0056] In addition, such as Figure 4 As shown, a fiber clamp is fixedly installed at the bottom of the second fiber coil, and a first galvanometer motor is fixedly installed at the top of the second fiber coil. Therefore, when a portion of the fiber in the second fiber coil swings with the rotation of the motor shaft of the first galvanometer motor, its bottom end remains stationary, thus preventing the second fiber coil from tangling. Similarly, a fiber clamp is fixedly installed on the first side of the third fiber coil, and a second galvanometer motor is fixedly installed on the second side of the third fiber coil opposite to the first side. Therefore, when a portion of the fiber in the third fiber coil swings with the rotation of the motor shaft of the second galvanometer motor, its first side remains stationary, thus preventing the third fiber coil from tangling.
[0057] Furthermore, the laser adjustment device 100 also includes a control module (not shown) for controlling the rotation of the motor shaft of the first galvanometer motor and the rotation of the motor shaft of the second galvanometer motor respectively when the thickness value of the current metal sheet is greater than or equal to a specified thickness value, so as to adjust the energy distribution of the annular spot of the laser.
[0058] It should be understood that the specific value of the specified thickness can be set according to actual needs, and the embodiments of this application are not limited thereto.
[0059] For example, the range of the specified thickness value is 18 to 22 mm.
[0060] It should be noted that the first and second galvanometer motors are controlled by absolute position and do not require angle reset. Their rotation angles can be calculated using the formula below.
[0061] It should also be noted that although the positions of the first, second, and third fiber optic loops have been described above, those skilled in the art should understand that the relative positions of the three fiber optic loops can also be set according to actual needs, and the embodiments of this application are not limited thereto.
[0062] For example, the second fiber coil can be placed between the combiner and the first fiber coil, and the third fiber coil can be placed between the first fiber coil and the QBH fiber head, etc.
[0063] It should be understood that the fixed connection method of the second optical fiber coil and the first galvanometer motor, as well as the rotation angle of the first galvanometer motor, can be set according to actual needs, and the embodiments of this application are not limited thereto.
[0064] Optionally, the output shaft of the first galvanometer motor is rigidly connected to the second fiber coil in the X-axis direction via a fiber optic clamp. The first galvanometer motor drives the second fiber coil to swing at high speed along the X-axis through high-speed swinging, and its swing angle is usually less than or equal to 5° (or its swing angle range is 0-5°, that is, the first rotation angle of the motor shaft of the first galvanometer motor is also less than or equal to 5°), and the swing speed is less than 10 kHz (or the swing speed range is 0-10 kHz, that is, the rotation speed of the first galvanometer motor is also less than 10 kHz).
[0065] Furthermore, the first galvanometer motor, through a small-angle oscillation α1 (e.g., α1 = 1°), can drive the final output energy point distribution of the optical fiber to move along the X-axis direction, and the moving distance can be d1. Here, d1 = α1 * k1, where k1 is a fixed first proportionality coefficient, which is related to the system's mechanical structure dimensions and optical characteristics. This coefficient is fixed after the laser fiber is wound and the motor rotor is installed. And, as... Figures 5a to 5c As shown, when the first galvanometer motor rotates clockwise, the light spot energy point deflects along the X-axis; when it rotates counterclockwise, the light spot energy point deflects in the opposite direction.
[0066] It should also be understood that the process of determining the first rotation angle can also be set according to actual needs, and the embodiments of this application are not limited thereto.
[0067] Optionally, the control module is specifically used to: acquire the spot parameters of the annular spot; wherein the spot parameters include the coordinates of the spot center and the spot radius; determine the first rotation angle of the motor shaft of the first galvanometer motor based on the X coordinate of the spot center and the spot radius, and control the rotation of the motor shaft of the first galvanometer motor based on the first rotation angle.
[0068] It should be understood that the specific formula for determining the first rotation angle of the motor shaft of the first galvanometer motor based on the X coordinate of the light spot center and the light spot radius can also be set according to actual needs, and the embodiments of this application are not limited thereto.
[0069] For example, the first rotation angle can be calculated using the following formula:
[0070] ax[i] = k1*X[i];
[0071] X[i] = m1*f1(radian[i]) + m2;
[0072] Where ax[i] represents the first rotation angle of the i-th rotation; k1 represents the preset first proportional coefficient, the specific value of which can be obtained by experiment or set according to actual needs; m1 is a parameter that changes with the deflection angle of the i-th rotation, and m1 can be obtained by experiment; f1 is a preset functional relationship, and this functional relationship can be obtained by experiment; m2 is a parameter determined by the X coordinate of the light spot center, and this parameter can be obtained by experiment.
[0073] It should also be understood that the fixed connection method of the third fiber optic coil and the second galvanometer motor, as well as the rotation angle of the second galvanometer motor, can be set according to actual needs, and the embodiments of this application are not limited thereto.
[0074] Optionally, the output shaft of the second galvanometer motor is rigidly connected to the third fiber coil in the Y-axis direction via a fiber optic clamp. The second galvanometer motor drives the third fiber coil to swing at high speed along the Y-axis through high-speed swinging, and its swing angle is usually less than or equal to 5° (or its swing angle range is 0-5°, that is, the second rotation angle of the motor shaft of the second galvanometer motor is also less than or equal to 5°), and the swing speed is less than 10 kHz (or the swing speed range is 0-10 kHz, that is, the rotation speed of the second galvanometer motor is also less than 10 kHz).
[0075] Furthermore, the second galvanometer motor, through a small-angle oscillation α2 (e.g., α2 = 1°), can move the energy distribution of the final output laser beam along the Y-axis, with a movement distance of d2. Here, d2 = α2 * k2, where k2 is a fixed second proportionality coefficient related to the system's mechanical structure dimensions and optical characteristics. This coefficient is fixed after the laser fiber is wound and the motor rotor is installed. And, as... Figures 5d to 5e As shown, when the second galvanometer motor rotates clockwise, the energy point of the light spot deflects along the positive Y direction; when it rotates counterclockwise, the energy point of the light spot deflects in the opposite direction. Here, k1 and k2 can be the same scaling factor.
[0076] It should also be understood that the process of determining the first rotation angle can also be set according to actual needs, and the embodiments of this application are not limited thereto.
[0077] Optionally, the control module is specifically used to: acquire the spot parameters of the annular spot; wherein the spot parameters include the coordinates of the spot center and the spot radius; determine the second rotation angle of the motor shaft of the second galvanometer motor based on the Y coordinate of the spot center and the spot radius, and control the rotation of the motor shaft of the second galvanometer motor based on the second rotation angle.
[0078] It should be understood that the specific formula for determining the second rotation angle of the motor shaft of the second galvanometer motor based on the Y coordinate of the light spot center and the light spot radius can also be set according to actual needs, and the embodiments of this application are not limited thereto.
[0079] For example, the second rotation angle can be calculated using the following formula:
[0080] ay[i] = k2*Y[i];
[0081] Y[i] = m3*f2(radian[i]) + m4;
[0082] Where ay[i] represents the second rotation angle of the i-th rotation; k2 represents the preset second proportional coefficient, the specific value of which can be obtained by experiment or set according to actual needs; m3 is a parameter that changes with the deflection angle of the i-th rotation, and m3 can be obtained by experiment; f2 is a preset functional relationship, and this functional relationship can be obtained by experiment; m4 is a parameter determined by the Y coordinate of the light spot center, and this parameter can be obtained by experiment.
[0083] It should also be noted that although the above description uses a thick plate as an example, those skilled in the art should understand that the adjustable energy distribution scheme can also achieve the adjustment of the output form of similar Gaussian distribution, flat-top spot, or other types of spot.
[0084] Therefore, by means of the above technical solution, the energy distribution of the light spot in the embodiments of this application can be adjusted, and the energy distribution of the light spot can be set according to the processing technology.
[0085] Furthermore, the embodiments of this application also achieve output forms similar to Gaussian distribution, flat-top light spots, or other types of light spots through high-speed light spot energy distribution control, thereby adapting to different board processing requirements.
[0086] To facilitate understanding of the embodiments of this application, specific embodiments are described below.
[0087] Specifically, taking annular light spots as an example, the control module calculates the center coordinates of n annular light spots based on the radius (radius) of the Gaussian light spot set by the user. Each center coordinate point contains two coordinate values: x and y. The radius (radius) represents the diameter of the light spot in its stationary state.
[0088] Furthermore, after the system starts, the control module controls the galvanometer motor to perform biaxial interpolation motion to obtain... Figure 6 The continuously interpolated annular light spot shown in the figure allows the light spot energy points to move along the calculated annular coordinate points, ultimately achieving the output effect of a flat-top light spot.
[0089] It should be understood that the above-described laser adjustment device is merely exemplary, and those skilled in the art can make various modifications based on the above method, and such modified solutions also fall within the protection scope of this application.
[0090] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0091] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, as well as combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions.
[0092] It should be noted that any reference numerals placed between parentheses in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. The invention can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In claims that enumerate several means, several of these means may be embodied by the same hardware. The use of the terms first, second, third, etc., is merely for convenience of expression and does not indicate any order. These terms can be understood as part of the component names.
[0093] Furthermore, it should be noted that in the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0094] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the claims should be interpreted to include both the preferred embodiments and all changes and modifications falling within the scope of the invention.
[0095] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, then this invention should also include these modifications and variations.
Claims
1. A laser adjustment device, characterized in that, include: The acquisition module is used to obtain the thickness value of the current metal sheet. The determining module is used to determine the target beam quality parameters of the laser used to cut the current metal sheet, corresponding to the sheet thickness value of the current metal sheet. An output module is used to output a laser beam corresponding to the target beam quality parameters based on the target beam quality parameters. The laser adjustment device is applied to a laser processing system, and the laser processing system includes multiple pump sources, a beam combiner, an intermediate fiber, and a QBH fiber head. Each of the multiple pump sources is connected to one end of the beam combiner, and the other end of the beam combiner is connected to the intermediate fiber and the QBH fiber head. The intermediate fiber includes a first fiber loop wound on the motor shaft of a stepper motor, and the number of fiber loops of the first fiber loop is greater than or equal to 2. The output module is specifically used to: determine the target rotation angle of the motor shaft of the stepper motor corresponding to the target beam quality parameter according to a pre-established fitting curve; wherein the fitting curve is used to represent the relationship between the beam quality parameter and the rotation angle of the motor shaft of the stepper motor; control the motor shaft of the stepper motor to rotate to the target rotation angle, and output laser light corresponding to the target beam quality parameter after the motor shaft of the stepper motor rotates to the target rotation angle; The intermediate optical fiber further includes a second optical fiber loop and a third optical fiber loop, with a first galvanometer motor fixedly mounted at the top of the second optical fiber loop and a second galvanometer motor fixedly mounted on the second side of the third optical fiber loop; the laser adjustment device further includes: The control module is used to control the rotation of the motor shaft of the first galvanometer motor and the rotation of the motor shaft of the second galvanometer motor respectively when the thickness value of the current metal sheet is greater than or equal to a specified thickness value, so as to adjust the energy distribution of the annular spot of the laser; the first rotation angle of the motor shaft of the first galvanometer motor and the second rotation angle of the motor shaft of the second galvanometer motor are both less than or equal to 1°; the specified thickness value is 20mm.
2. The laser adjustment device according to claim 1, characterized in that, Optical fiber clamps are fixedly installed at the bottom end of the second optical fiber loop and on the first side of the third optical fiber loop.
3. The laser adjustment device according to claim 2, characterized in that, The control module is specifically used to: acquire the spot parameters of the annular light spot; wherein the spot parameters include the coordinates of the spot center and the spot radius; determine the first rotation angle of the motor shaft of the first galvanometer motor based on the X coordinate of the spot center and the spot radius, and control the rotation of the motor shaft of the first galvanometer motor based on the first rotation angle.
4. The laser adjustment device according to claim 3, characterized in that, The control module is specifically used to: determine the second rotation angle of the motor shaft of the second galvanometer motor according to the Y coordinate of the center of the light spot and the radius of the light spot, and control the rotation of the motor shaft of the second galvanometer motor based on the second rotation angle.
5. The laser adjustment device according to claim 1, characterized in that, Both the second and third fiber optic loops are disposed between the first fiber optic loop and the QBH fiber optic head, with the second fiber optic loop being closer to the first fiber optic loop.