Combined laser welding method and device

Abstract

The invention provides a combined laser welding method and device.The method comprises the following steps that linear structured light is adopted to scan a welding seam area of a welding workpiece in the welding path direction, and morphological characteristics of the welding seam area are obtained; determining welding process parameters of the combined laser welding device according to the morphological characteristics and the material characteristics of the welding workpiece; the combined laser welding assembly is driven to move along the welding path, the welding seam area is welded, characteristic parameters of small laser holes in the welding seam area are monitored in real time, and in the continuous laser welding process, if the characteristic parameters exceed a preset range, pulse laser is switched to conduct welding on the welding seam area; and in the continuous laser welding process, if the characteristic parameters exceed the preset range, continuous laser is switched to conduct welding on the welding seam area. The problem that thermal stress is not uniform when different materials are welded can be effectively solved, the uniformity and strength of a welding area are guaranteed, high-precision welding of structural parts in complex shapes is achieved, and the welding precision and consistency are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and more specifically, to a combined laser welding method and device. Background Art

[0002] With the rapid development of aerospace material processing and manufacturing technology in China, laser welding technology has been widely applied in the production and manufacturing of aerospace weaponry. The demand for welding dissimilar materials (such as welding metal and composite materials) and welding of complex geometric shapes is increasing day by day. However, the existing laser welding technology has significant limitations in dealing with dissimilar materials and complex structures, especially in the high-efficiency and high-quality welding of dissimilar materials and complex structures. Summary of the Invention

[0003] (1) Technical Problems to be Solved

[0004] The technical problem to be solved by the present invention is that the existing laser welding technology is difficult to achieve high-efficiency and high-quality welding of dissimilar materials and complex structures.

[0005] (2) Technical Solutions

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] In the first aspect, the present invention provides a combined laser welding method. The combined laser welding device includes a continuous laser welding component and a pulsed laser welding component. The combined laser welding method includes the following steps:

[0008] Use line structured light to scan the weld area of the welding workpiece along the welding path direction to obtain the morphological characteristics of the weld area;

[0009] According to the morphological characteristics and the material properties of the welding workpiece, determine the welding process parameters of the combined laser welding device;

[0010] Drive the combined laser welding component to move along the welding path and weld the weld area. Among them, the continuous laser welding component generates continuous laser, the pulsed laser welding component generates pulsed laser, and the continuous laser and the pulsed laser are respectively output along the same optical path and act on the weld area;

[0011] Real-time monitor the characteristic parameters of the laser keyhole in the weld area. During continuous laser welding, if the characteristic parameters exceed the preset range, then switch to pulsed laser welding of the weld area; during continuous laser welding, if the characteristic parameters exceed the preset range, then switch to continuous laser welding of the weld area.

[0012] Preferably, the characteristic parameters include the wall curvature of the laser keyhole and the surface tension pressure of the laser keyhole.

[0013] Preferably, the wall curvature k of the laser keyhole is calculated according to the following formula:

[0014]

[0015] where is the surface normal vector of the laser keyhole, is the modulus of the surface normal vector of the laser keyhole, is the gradient operator, which is used to calculate the gradient of the vector field and represents the rate of change of the vector field in space;

[0016] The surface tension pressure Pγ of the laser keyhole is calculated according to the following formula:

[0017] Pγ = k × γ;

[0018] where γ is the surface tension coefficient of the laser keyhole.

[0019] Preferably, the weld area of the welded workpiece is scanned along the welding path direction by using a line structured light to obtain the morphological characteristics of the weld area, including the following steps:

[0020] Project the linear laser beam onto the area to be welded, use a camera to capture the distorted laser line image on the surface of the weld area of the object, then perform image processing, construct a three-dimensional digital model of the weld area, and extract the morphological characteristics of the weld area from the three-dimensional digital model.

[0021] Preferably, determining the welding process parameters of the combined laser welding device according to the morphological characteristics and the material properties of the welded workpiece includes the following steps:

[0022] According to the morphological characteristics of the weld area, set the first equipment parameters of the continuous laser welding component and the second equipment parameters of the pulsed laser welding component respectively;

[0023] Determine the welding process parameters according to the thermophysical properties, thermal conductivity, first equipment parameters and second equipment parameters of the material of the welded workpiece.

[0024] Preferably, the first equipment parameters include pulse width, pulse frequency, and pulse energy; the second equipment parameters include laser power and welding speed; the welding process parameters include welding speed, welding position, and laser focus position.

[0025] Preferably, it further includes the following steps:

[0026] During the welding process, the welding width and welding depth of the weld area are monitored in real time, and the welding process parameters of the combined laser welding device are adjusted according to the welding width and welding depth.

[0027] Preferably, during the welding process, the welding width and welding depth of the weld area are monitored in real time, and the steps of adjusting the welding process parameters of the combined laser welding device according to the welding width and welding depth are as follows:

[0028] If the welding width exceeds the preset width range, the combined laser welding device adjusts the laser power and / or welding speed;

[0029] If the welding depth exceeds the preset width range, the combined laser welding device adjusts the laser focus position.

[0030] In a second aspect, the present invention further provides a combined laser welding device for implementing the combined laser welding method described in any one of the above technical solutions. The combined laser welding device includes a continuous laser welding component, a pulsed laser welding component, a laser head, and a beam controller; the continuous laser welding component is connected to the laser head, the pulsed laser welding component is connected to the laser head, the continuous laser welding component is used to generate continuous laser, the pulsed laser welding component is used to generate pulsed laser, the beam controller is disposed on the laser head, and the beam controller is used to control the shape, size, and focus position of the laser beam.

[0031] Preferably, it further includes a follow-up sensor and an industrial camera, and the follow-up sensor and the industrial camera are installed on the laser head.

[0032] (III) Beneficial effects

[0033] The above technical solutions of the present invention have at least the following advantages:

[0034] 1. The present invention provides a combined laser welding method. The continuous laser welding component generates continuous laser, and the pulsed laser welding component generates pulsed laser. On the same welding track, the characteristic parameters of the laser keyhole in the weld area are monitored in real time. During the continuous laser welding process, if the characteristic parameters exceed the preset range, the pulsed laser welding of the weld area is switched; during the continuous laser welding process, if the characteristic parameters exceed the preset range, the continuous laser welding of the weld area is switched. If the characteristic parameters still exceed the preset range after switching, the welding process parameters are dynamically adjusted. Specifically, the specific numerical range of the preset range can be determined according to experiments. When the characteristic parameters exceed the preset range, it indicates that the current laser welding process is not suitable for welding in the current area. According to the range of the feedback characteristic parameters, the control system can dynamically adjust the energy distribution of the pulsed laser and the continuous laser to ensure the stability and consistency of the welding quality, and achieve efficient and high-quality welding by controlling the switching time and energy distribution of the pulsed laser and the continuous laser.

[0035] 2. The present invention provides a combined laser welding device. Through this device, combined welding of continuous laser and pulsed laser can be achieved, which can effectively solve the problem of uneven thermal stress during welding of different materials, ensure the uniformity and strength of the welding area, and due to the coordinated control and dynamic energy distribution of multiple lasers, high-precision welding of complex shapes is realized, ensuring the welding precision and consistency. Compared with the existing process, the welding quality and efficiency have been greatly improved. At the same time, the combined laser welding device is simply designed and easy to operate, suitable for composite welding of various materials in fields such as aerospace and automotive, and has high practical value and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0037] Figure 1 is a schematic structural diagram of the combined laser welding device provided by the embodiment of the present invention.

[0038] Figure 2 is a schematic flow chart of the combined laser welding method provided by the embodiment of the present invention.

[0039] Figure 3 is a process flow chart of the combined laser welding method provided by the embodiment of the present invention.

[0040] Each reference numeral in the figure is as follows:

[0041] 1. Laser head; 2. Beam controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly located on the other element or indirectly located on the other element. When an element is referred to as "connected to" another element, it can be directly connected or indirectly connected to the other element.

[0044] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0045] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating relative importance or indicating the quantity of technical features. In the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise specifically defined. The following describes the specific implementation of the present invention in more detail with reference to specific embodiments:

[0046] As Figure 1 shown, an embodiment of the present invention provides a combined laser welding device. The combined laser welding device includes a continuous laser welding component (not shown), a pulsed laser welding component (not shown), a laser head 1, and a beam controller 2. The continuous laser welding component is connected to the laser head 1, the pulsed laser welding component is connected to the laser head 1. The continuous laser welding component is used to generate continuous laser, the pulsed laser welding component is used to generate pulsed laser. The beam controller 2 is disposed on the laser head 1, and the beam controller 2 is used to control the shape, size, and focal position of the laser beam.

[0047] As a preferred embodiment of this embodiment, it further includes a follow-up sensor (not shown) and an industrial camera (not shown), and the follow-up sensor and the industrial camera are installed on the laser head 1.

[0048] As Figure 2 shown, an embodiment of the present invention further provides a combined laser welding method, which is implemented by using the combined laser welding device in the above embodiment. The combined laser welding method includes the following steps:

[0049] S1. Use a line-structured light to scan the weld area of the welded workpiece along the welding path direction to obtain the morphological characteristics of the weld area. Specifically, in the combined laser welding method, scanning the welded workpiece with a line-structured light along the welding path direction is an important step in determining the geometric characteristics of the weld area and the basis for subsequent determination of welding parameters. It is mainly used to identify the morphological characteristics of the weld area and provide a basis for setting welding parameters. It should be noted that optical line-structured light scanning is a non-contact measurement method based on optical triangulation. Its basic principle includes: projecting a linear laser beam onto the surface of the object to be measured, using a camera to capture the laser line distortion on the object surface, and then using an algorithm to reconstruct the three-dimensional geometry of the object. Through high-precision optical scanning and line drawing, the morphological characteristics of the weld can be accurately measured. Specifically, the morphological characteristics include weld width and weld depth, etc. Further, write the robot program and the laser program according to the identified morphological characteristics to perform the switching between pulsed laser welding and continuous laser, and then generate a complete welding program through post-processing to guide the robot to perform operations.

[0050] S2. Determine the welding process parameters of the combined laser welding device according to the morphological characteristics and the material properties of the welded workpiece.

[0051] S3. Drive the combined laser welding assembly to move along the welding path and weld the weld area. Among them, the continuous laser welding assembly generates continuous laser, and the pulsed laser welding assembly generates pulsed laser. The continuous laser and the pulsed laser are respectively output along the same optical path and act on the weld area. Specifically, pulsed laser welding is a classic laser welding. Its output uses pulsed laser. There are pulsed outputs of laser for a certain time within a certain period, and then repeated outputs after an interval. The pulsed laser has high energy density and high welding precision, and has the advantages of fast speed, large depth, small deformation, high precision, high efficiency, non-contact, etc., and is used for fine welding and repair of complex structures. Continuous laser welding requires that the laser must have a certain stability and be able to continuously output. Its molten pool is large, the weld is more dense, the welding accuracy is high, and the stability is high, and it is used to maintain the stability and penetration depth of the weld. However, it is more difficult to control the weld width and depth. Combining pulsed laser welding and continuous laser welding can make up for each other's advantages. Continuous laser welding is used to maintain the stability of the weld, and pulsed laser can be used for the repair of the internal structure of the tissue and the control of the morphology.

[0052] S4. Monitor the characteristic parameters of the laser keyhole in the weld area in real time. During continuous laser welding, if the characteristic parameters exceed the preset range, switch to pulsed laser welding for the weld area; during continuous laser welding, if the characteristic parameters exceed the preset range, switch to continuous laser welding for the weld area. If the characteristic parameters still exceed the preset range after switching, dynamically adjust the welding process parameters. Specifically, the specific numerical range of this preset range can be determined through experiments. When the characteristic parameters exceed the preset range, it indicates that the current laser welding process is not suitable for welding the current area. According to the range of the feedback characteristic parameters, the control system can dynamically adjust the energy distribution of pulsed laser and continuous laser to ensure the stability and consistency of welding quality, and achieve efficient and high-quality welding by controlling the switching time and energy distribution of pulsed laser and continuous laser.

[0053] As a preferred implementation manner of this embodiment, the characteristic parameters include the curvature of the keyhole wall of the laser keyhole and the surface tension pressure of the laser keyhole. Specifically, the keyhole refers to the deep penetration hole formed on the material surface due to the high-energy density laser beam during the laser welding process. The curvature of the keyhole wall of the laser keyhole reflects the degree of bending of the keyhole wall. The greater the curvature, the more curved the wall. The surface tension pressure of the laser keyhole reflects the ability of the material surface to resist deformation. The greater the pressure, the more stable the keyhole wall. The energy distribution of continuous laser and pulsed laser is mainly dynamically adjusted through the weld morphology characteristic data monitored by the sensor in real time. When laser welding different materials, the laser energy distribution can be dynamically adjusted according to the different thermophysical properties of the materials to ensure the strength and uniformity of the weld.

[0054] As a preferred implementation manner of this embodiment, calculate the curvature k of the keyhole wall of the laser keyhole according to the following formula:

[0055]

[0056] Where, is the surface normal vector of the laser keyhole, is the modulus of the surface normal vector of the laser keyhole, is the gradient operator, which is used to calculate the gradient of the vector field and represents the rate of change of the vector field in space; represents the curl of the normal vector, reflecting the rotational change of the normal direction in space. This formula describes the degree of bending of the keyhole wall through the gradient and curl of the normal vector .

[0057] Calculate the surface tension pressure Pγ of the laser keyhole according to the following formula:

[0058] Pγ = k × γ;

[0059] Where γ is the surface tension coefficient of the keyhole. Specifically, during the welding process, the wall curvature k of the keyhole and the surface tension pressure Pγ are important factors affecting the welding quality. By monitoring the wall curvature and surface tension pressure of the keyhole in real time and comparing the characteristic parameters with the first preset range and the second preset range, the control system can dynamically adjust the energy distribution of the pulsed laser and the continuous laser to ensure the stability and consistency of the welding quality. By optimizing the surface tension pressure Pγ, welding defects (such as pores, cracks, etc.) can be reduced and the welding quality can be improved.

[0060] As a preferred implementation manner of this embodiment, a line structured light is used to scan the weld area of the welded workpiece along the welding path direction to obtain the morphological characteristics of the weld area, including the following steps:

[0061] Project a linear laser beam onto the weld area, use a camera to capture the laser line distortion image on the surface of the weld area of the object, and then perform image processing on the captured material to construct a three-dimensional digital model of the weld area, and extract the morphological characteristics of the weld area from the three-dimensional digital model.

[0062] As a preferred implementation manner of this embodiment, according to the morphological characteristics and the material properties of the welded workpiece, determine the welding process parameters of the combined laser welding device, including the following steps:

[0063] According to the morphological characteristics of the weld area, respectively set the first device parameters of the continuous laser welding component and the second device parameters of the pulsed laser welding component;

[0064] According to the thermophysical properties, thermal conductivity, first device parameters, and second device parameters of the material of the welded workpiece, determine the welding process parameters.

[0065] As a preferred implementation manner of this embodiment, the first device parameters include pulse width, pulse frequency, and pulse energy; the second device parameters include laser power and welding speed; the welding process parameters include welding speed, welding position, and laser focus position.

[0066] As a preferred implementation manner of this embodiment, it further includes the following steps:

[0067] During the welding process, monitor the welding width and welding depth of the weld area in real time, and adjust the welding process parameters of the combined laser welding device according to the welding width and welding depth.

[0068] As a preferred embodiment of this embodiment, during the welding process, the welding width and welding depth of the weld area are monitored in real time, and adjusting the welding process parameters of the combined laser welding device according to the welding width and welding depth includes the following steps:

[0069] If the welding width exceeds the preset width range, the combined laser welding device will automatically adjust the laser power and / or welding speed;

[0070] If the welding depth exceeds the preset width range, the combined laser welding device adjusts the laser focus position.

[0071] The following are specific embodiments provided by this application:

[0072] Embodiment 1

[0073] As Figure 3 shown, in this embodiment, welding materials are prepared first: the base material and filler materials (wire, powder, foil) are selected. For the welding test, a 15% SiCp / 2009 aluminum matrix composite (SiCp / 2009Al) extrusion plate with dimensions of 100 mm × 50 mm × 2 mm and a 2-series aluminum alloy with dimensions of 100 mm × 50 mm × 2 mm are used for butt deep penetration welding. And its surface is cleaned with alcohol or acetone to remove impurities and oxides on the surfaces of the base material and filler materials. A pure Ti foil with a thickness of 0.05 mm is pre-placed at the gap of the SiCp / 2009Al test plate to be welded, and then the welding test is carried out.

[0074] Step 1: Use a line structured light scanner to scan the weld area of the welded workpiece along the welding path direction to obtain the morphological characteristics of the weld area. The morphological characteristic data are as follows: the weld width is 2 mm, and the weld depth is 2.5 mm. Analyze the scanned data: Determine the first equipment parameters of the continuous laser welding component and the second equipment parameters of the pulsed laser welding component according to the weld width and weld depth, and determine process parameters such as the laser power, welding speed, and defocus amount required for laser welding according to the weld width and depth. Generally, a larger weld width requires a higher laser power and a slower welding speed, and a larger weld depth requires adjusting the laser focus position to ensure that the laser energy is sufficient to penetrate the weld. In this embodiment, determine the first equipment parameters of the continuous laser welding component: the laser power is 1000 W, and the welding speed is 0.02 m / s; determine the second equipment parameters of the pulsed laser welding component: the pulse frequency is 17.857 Hz, and the pulse width is 56 ms.

[0075] Step 2: Determine the welding process parameters according to the thermophysical properties, thermal conductivity coefficient of the welded workpiece material, the first equipment parameter, and the second equipment parameter. Since the aluminum alloy matrix has a relatively high laser reflectivity, to protect the laser head from being damaged by the laser reflected from the aluminum plate, its axis forms an angle of 10° with the normal of the welding plane. During the welding test, the shielding gases on the side and the back are both argon, and the gas flow rates are 25 L / min and 15 L / min respectively. Through the screening of the laser power and welding speed during the test, the welding process parameters and their corresponding heat inputs are shown in Table 1. During the welding process, the laser beam is focused on the surface of the specimen, and butt welding is used to obtain the welding specimen and the tensile specimen.

[0076] Table 1 Laser welding process parameters for dissimilar materials of SiCp / 2009Al and aluminum alloy

[0077] Serial number Laser power / W Pulse power / W <![CDATA[Welding speed / m·s -1 > <![CDATA[Thermal input / KJ·cm -1 > 1# 1000 1000 0.025 0.4 2# 1000 1500 0.02 0.5 3# 1000 2000 0.015 0.67

[0078] According to the test data, the laser power of the continuous laser welding component is preferably set to 1000 W to maintain welding stability; the laser power of the pulsed laser component is set to 1500 W to repair the weld edge and perform welding of complex structures.

[0079] Step 3: Drive the combined laser welding component to move along the welding path and weld the weld area. Among them, the continuous laser welding component generates continuous laser, and the pulsed laser welding component generates pulsed laser. The continuous laser and the pulsed laser are respectively output along the same optical path and act on the weld area to perform pulsed and continuous combined laser welding.

[0080] Step 4: Monitor the characteristic parameters of the laser keyhole in the weld area in real time. If the characteristic parameters exceed the first preset range of the continuous laser, then switch to the pulsed laser to weld the weld area; if the characteristic parameters exceed the second preset range of the pulsed laser, then switch to the continuous laser to weld the weld area. If the welding shape is complex, the control system will switch the continuous welding to pulsed laser. The overall welding process is on the same welding trajectory, using pulsed laser and continuous laser to work together to achieve high-efficiency and high-quality welding of dissimilar materials.

[0081] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined laser welding method, characterized in that, The combined laser welding device includes a continuous laser welding component and a pulsed laser welding component. The combined laser welding method includes the following steps: Use a line structured light to scan the weld area of the welding workpiece along the welding path direction to obtain the morphological characteristics of the weld area; Determine the welding process parameters of the combined laser welding device according to the morphological characteristics and the material properties of the welding workpiece; Drive the combined laser welding component to move along the welding path and weld the weld area. Among them, the continuous laser welding component generates continuous laser, the pulsed laser welding component generates pulsed laser, and the continuous laser and the pulsed laser are respectively output along the same optical path and act on the weld area; Real-time monitor the characteristic parameters of the laser keyhole in the weld area. During continuous laser welding, if the characteristic parameters exceed the preset range, then switch to pulsed laser welding of the weld area; during continuous laser welding, if the characteristic parameters exceed the preset range, then switch to continuous laser welding of the weld area.

2. The combined laser welding method according to claim 1, wherein, The characteristic parameters include the wall curvature of the laser keyhole and the surface tension pressure of the laser keyhole.

3. The combined laser welding method according to claim 2, characterized in that, Calculate the wall curvature k of the laser keyhole according to the following formula: Among them, is the surface normal vector of the laser small hole, is the modulus of the surface normal vector of the laser small hole, is the gradient operator, which is used to calculate the gradient of the vector field and represents the rate of change of the vector field in space; Calculate the surface tension pressure Pγ of the laser keyhole according to the following formula: Pγ = k × γ; Where γ is the surface tension coefficient of the laser keyhole.

4. The combined laser welding method according to claim 1, wherein The step of using a line structured light to scan the weld area of the welding workpiece along the welding path direction to obtain the morphological characteristics of the weld area includes the following steps: Project a linear laser beam onto the weld area, use a camera to capture the distorted laser line image on the surface of the weld area of the object, process the image, construct a three-dimensional digital model of the weld area, and extract the morphological characteristics of the weld area from the three-dimensional digital model.

5. The combined laser welding method according to claim 1, characterized in that, The step of determining the welding process parameters of the combined laser welding device according to the morphological characteristics and the material properties of the welding workpiece includes the following steps: According to the morphological characteristics of the weld area, respectively set the first device parameters of the continuous laser welding component and the second device parameters of the pulsed laser welding component; Determine the welding process parameters according to the thermophysical properties, thermal conductivity, first device parameters and second device parameters of the material of the welding workpiece.

6. The combined laser welding method according to claim 5, characterized in that, The first device parameters include pulse width, pulse frequency, and pulse energy; the second device parameters include laser power and welding speed; the welding process parameters include welding speed, welding position, and laser focus position.

7. The combined laser welding method according to claim 1, characterized in that It also includes the following steps: During welding, real-time monitor the welding width and welding depth of the weld area, and adjust the welding process parameters of the combined laser welding device according to the welding width and welding depth.

8. The combined laser welding method according to claim 7, characterized in that, The step of real-time monitoring the welding width and welding depth of the weld area during welding and adjusting the welding process parameters of the combined laser welding device according to the welding width and welding depth includes the following steps: If the welding width exceeds the preset width range, the combined laser welding device adjusts the laser power and / or the welding speed; If the welding depth exceeds the preset width range, the combined laser welding device adjusts the laser focus position.

9. A combined laser welding device, characterized in that, For implementing the combined laser welding method according to any one of claims 1-8, the combined laser welding device includes a continuous laser welding component, a pulsed laser welding component, a laser head, and a beam controller; the continuous laser welding component is connected to the laser head, the pulsed laser welding component is connected to the laser head, the continuous laser welding component is used to generate continuous laser, the pulsed laser welding component is used to generate pulsed laser, the beam controller is disposed on the laser head, and the beam controller is used to control the shape, size, and focal position of the laser beam.

10. The combined laser welding device according to claim 9, characterized in that, It further includes a follow-up sensor and an industrial camera, and the follow-up sensor and the industrial camera are installed on the laser head.

Images