Welding fixing device and laser welding system for special-material appliances

Abstract

The utility model relates to the technical field of welding, and provides a welding fixing device and a laser welding system for special-material appliances. The welding fixing device comprises a positioning bottom plate and a plurality of magnetic positioning pieces; a plurality of sliding grooves are formed in the positioning bottom plate, and the groove bottom of each sliding groove is magnetic. And each magnetic positioning piece can generate a magnetic attraction effect with the groove bottom of each sliding groove. The laser welding device comprises the welding fixing device and a laser welding device. The welding method comprises the steps that to-be-welded pieces made of different materials are spliced on a positioning bottom plate of a welding fixing device, a plurality of magnetic positioning pieces are arranged in a sliding groove to be magnetically attracted and fixed to the bottom of the sliding groove, and the magnetic positioning pieces are arranged around the spliced to-be-welded pieces; and the laser welding device is used for conducting laser welding on the limited to-be-welded part. The welding fixing device provided by the utility model can be used for fixing the to-be-welded piece with any size and shape. When the welding method provided by the utility model is used for welding the cutter, the problem of cutter breakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding fixture and a laser welding system for heterogeneous material tools. Background Art

[0002] The production of steel tools is inseparable from welding, and the parts to be welded usually need to be fixed during welding. If a device that is convenient for fixing the parts to be welded can be provided, it will undoubtedly reduce the production difficulty and improve production efficiency.

[0003] Currently, argon arc welding is mostly used for welding dissimilar materials. This welding method has low thermal efficiency and a low pass rate for some special instruments.

[0004] Traditional knives are forged from steel in one piece. Because different parts of a tool require different material properties, current knife production also utilizes a separate structure, where the handle and blade are welded together. With technological advancements, blade materials are further differentiated, with the main body made from common steels such as stainless steel and 3Cr steel, while the blades are made from wear-resistant, high-toughness steels such as M390 powdered steel. Using argon arc welding, however, suffers from low thermal efficiency, prone to post-weld chipping, and inefficiently improves efficiency.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The purpose of the present invention includes, for example, providing a welding fixture and a laser welding system for heterogeneous material tools, aiming to improve at least one problem mentioned in the background art.

[0007] The embodiment of the present utility model can be implemented as follows:

[0008] In a first aspect, the utility model provides a welding fixture, comprising a positioning base plate and a plurality of magnetic positioning members;

[0009] A plurality of slide grooves are provided on the positioning base plate, and the bottom of each slide groove is magnetic;

[0010] Each magnetic positioning member can generate magnetic attraction with the bottom of each chute.

[0011] In an optional embodiment, each slide groove is in the shape of an elongated strip, and a plurality of slide grooves are evenly distributed on the positioning base plate.

[0012] In an optional embodiment, one end of each sliding groove extends to the edge of the positioning base plate and passes through the side wall of the positioning base plate.

[0013] In an optional embodiment, each magnetic positioning member includes a turntable, a yoke rotating sleeve, and identical first and second permanent magnets. The first permanent magnet is fixedly connected to the turntable, and one end of the turntable extends into the yoke rotating sleeve so that the yoke rotating sleeve can rotate about the turntable. The second permanent magnet is fixedly disposed in the yoke rotating sleeve, and the projections of the first and second permanent magnets on a plane perpendicular to the turntable completely overlap.

[0014] Optionally, the longitudinal section of the chute is in the shape of a "convex" character, and the shape of the lower portion of the magnetic positioning member matches the shape of the chute.

[0015] In a second aspect, the utility model provides a laser welding system, comprising the above-mentioned welding fixture and a laser welding device.

[0016] In an optional embodiment, the laser welding device includes a laser source, a laser fiber, a rotating axis mirror assembly, a focusing lens, and a control system;

[0017] The laser beam emitted by the laser source is transmitted through the laser optical fiber. The laser beam transmitted by the laser optical fiber is reflected toward the position to be welded under the action of the rotating axis mirror group, and a laser focus is formed at the position to be welded through the focusing lens. The control system is communicated with the rotating axis mirror group. The control system sends instructions to the rotating axis mirror group according to the welding path to adjust the rotation angle in real time so that the laser focus moves along the welding path.

[0018] In an optional embodiment, the rotating axis mirror group includes a first rotating axis mirror and a second rotating axis mirror, the first rotating axis mirror is used to reflect the laser beam transmitted by the laser optical fiber to the second rotating axis mirror, and the second rotating axis mirror is used to reflect the laser beam toward the target position to be welded;

[0019] In an optional embodiment, the laser welding device further includes a first spectroscope, a second spectroscope, a visual monitoring optical fiber, and an analysis system;

[0020] The first beam splitter is arranged on the optical path of the laser beam and is located between the laser optical fiber and the rotating axis mirror group. The first beam splitter is used to transmit the laser light from the laser optical fiber to the rotating axis mirror group, and is used to reflect the visible light reflected by the focusing lens and the rotating axis mirror group to the second beam splitter. The second beam splitter is used to receive the visible light reflected by the first beam splitter and reflect the visible light to the visual monitoring optical fiber. The visual monitoring optical fiber transmits the received visible light to the analysis system. The analysis system analyzes the image data in the received visible light to obtain weld quality information and plan the welding path.

[0021] In an optional embodiment, the analysis system and the control system are communicatively connected, and the welding path planned by the analysis system sends instructions to the rotating axis mirror group through the control system. The rotating axis mirror group is configured to adjust the rotation angle in real time according to the welding path planned by the analysis system, so that the laser focus moves according to the welding path.

[0022] The beneficial effects of the embodiments of the present invention include, for example:

[0023] The welding fixing device provided by the utility model can fix the workpiece to be welded on the positioning base plate through the magnetic positioning piece due to its specific structural arrangement, regardless of the shape and size of the workpiece to be welded.

[0024] The welding system for heterogeneous material tools and the welding system provided by the utility model adopt laser welding for heterogeneous material tools, so the welding effect is good and the qualified rate is high. In particular, when welding cutters, the cutter chipping phenomenon will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the device structure involved in the welding method of heterogeneous material tools provided in an embodiment of the present utility model;

[0027] Figure 2 A schematic structural diagram of a positioning base plate of a welding fixture provided by an embodiment of the present invention, wherein the upper figure is a top view and the lower figure is a front view;

[0028] Figure 3 and Figure 4 They are schematic diagrams of the structure when the tool is fixed on the positioning base plate by magnetic positioning parts of different shapes;

[0029] Figure 5 Schematic diagram of the structure of the magnetic positioning member;

[0030] Figure 6 This is a schematic diagram of the magnetic positioning component when it is non-magnetic to the outside world;

[0031] Figure 7 This is a schematic diagram of a magnetic positioning member when it is magnetic to the outside world;

[0032] Figure 8 Schematic diagram of the structure of two magnetic positioning parts with different shapes;

[0033] Figure 9 Schematic diagram of the structure of the two tools.

[0034] Icons: 1-workbench; 2-tool; 3-second part; 4-first part; 5-second part; 6-first part; 100-welding fixture; 101-positioning base plate; 102-slide groove; 103-magnetic positioning piece; 111-turntable; 111a-connecting frustum; 111b-connecting column; 112-yoke rotating sleeve; 113-first permanent magnet; 114-second permanent magnet; 200-laser welding device; 201-laser beam; 202-first spectrometer; 203-second spectrometer; 204-first rotating axis mirror; 205-second rotating axis mirror; 207-focusing lens; 210-visual monitoring optical fiber; 211-laser optical fiber. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0039] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0040] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0041] like Figures 1 to 4 As shown, the embodiment of the present invention provides a welding fixture 100, comprising a positioning base plate 101 and a plurality of magnetic positioning members 103;

[0042] A plurality of slide grooves 102 are provided on the positioning base plate 101, and the bottom of each slide groove 102 is magnetic;

[0043] Each magnetic positioning member 103 can generate a magnetic attraction with the bottom of each chute 102 .

[0044] The welding fixture 100 provided in the embodiment of the present invention is used as follows:

[0045] The welding fixture 100 is placed on the workbench 1, and the parts to be welded of different materials are spliced ​​on the positioning base plate 101. A plurality of magnetic positioning parts 103 are set in the slide groove 102 and fixed to the bottom of the groove by magnetic attraction. The plurality of magnetic positioning parts 103 are set around the spliced ​​parts to be welded to limit the spliced ​​parts to be welded so that the parts to be welded are fixed on the base plate.

[0046] The welding fixture 100, due to its specific structural arrangement, can achieve that no matter what shape or size of the specific workpiece to be welded, the workpiece to be welded can be fixed on the positioning base plate 101 through the magnetic positioning member 103. Therefore, the welding fixture 100 provided by the present application can be applied to the welding positioning of workpieces of various shapes and sizes.

[0047] Optionally, each sliding groove 102 is in an elongated strip shape, and a plurality of sliding grooves 102 are evenly distributed on the positioning base plate 101 .

[0048] Optionally, one end of each sliding groove 102 extends to the edge of the positioning base plate 101 and passes through the side wall of the positioning base plate 101 .

[0049] One end of the slide groove 102 penetrates the side wall of the positioning base plate 101. When in use, the magnetic member can be slid into the slide groove 102 from the penetration point and fixed at the target position by magnetic attraction.

[0050] like Figure 5 As shown, optionally, each magnetic positioning member 103 includes a turntable 111, a yoke rotating sleeve 112, a completely identical first permanent magnet 113 and a second permanent magnet 114, the first permanent magnet 113 is fixedly connected to the turntable 111, one end of the turntable 111 extends into the yoke rotating sleeve 112, so that the yoke rotating sleeve 112 can rotate around the turntable 111, the second permanent magnet 114 is fixedly arranged in the yoke rotating sleeve 112, and the projections of the first permanent magnet 113 and the second permanent magnet 114 on the plane perpendicular to the turntable 111 completely overlap.

[0051] like Figure 6 and Figure 7 As shown, when the magnetic positioning member 103 is not in use, the positive and negative poles of the two permanent magnets are in opposite positions, and the state presented is as follows: Figure 6 As shown, it will not generate attraction to external ferromagnetic components. After the magnetic positioning member 103 is moved to the appropriate position of the slide slot 102, the yoke rotating sleeve 112 is screwed and rotated 180 degrees. Figure 7 As shown, the two permanent magnets will generate suction force on the slide 102 to achieve positioning.

[0052] Optionally, the longitudinal section of the chute 102 is convex, and the shape of the lower part of the magnetic positioning member 103 (the structure composed of the lower part of the turntable 111 and the second permanent magnet 114 ) matches the shape of the chute 102 .

[0053] The specific shape settings of the slide groove 102 and the magnetic positioning member 103 can ensure that the magnetic positioning member 103 is limited in the height direction after being installed in the slide groove 102.

[0054] Alternatively, as Figure 8 As shown, the shape of the magnetic positioning member 103 is square (left) or round (right), preferably square. When it is square, the turntable 111 includes a connecting frustum 111a extending into the yoke rotating sleeve 112 and a connecting column 111b located in the slide groove 102. The connecting column 111b is a rectangular parallelepiped, and its width is exactly the same as the width of the slide groove 102. In this way, when the yoke rotating sleeve 112 is screwed, the connecting column 111b will not rotate together, which can well make the magnetic positioning member 103 change from being non-magnetic to the outside world to being magnetic to the outside world.

[0055] like Figure 1 As shown, an embodiment of the present application provides a laser welding system for heterogeneous material tools, which includes a welding fixture 100 and a laser welding device 200 provided in this embodiment.

[0056] When the welding system is in use, the workpiece to be welded is fixed using a welding fixture 100, and then welded using a laser welding device 200. Laser welding is used for welding dissimilar instruments (instruments with different materials in different parts). This method has high thermal efficiency and high welding quality, ensuring the qualified rate of the welded instruments.

[0057] Optionally, the laser welding device 200 provided in this embodiment includes a laser source, a laser fiber 211, a rotating axis mirror group, a focusing lens 207 and a control system;

[0058] The laser source emits a laser beam 201 which is transmitted through the laser optical fiber 211. The laser beam 201 transmitted by the laser optical fiber 211 is reflected toward the position to be welded under the action of the rotating axis mirror group, and forms a laser focus at the position to be welded through the focusing lens 207. The control system is communicated with the rotating axis mirror group. The control system sends instructions to the rotating axis mirror group according to the welding path to adjust the rotation angle in real time so that the laser focus moves along the welding path.

[0059] By coordinating the laser source, laser fiber 211, rotating axis mirror group, focusing lens 207 and control system, different materials can be automatically welded according to the welding path; and, due to the setting of the rotating axis mirror group, the laser welding device 200 can be kept stationary, and the laser focus can be moved according to the welding trajectory by simply controlling the rotation of the rotating axis mirror group.

[0060] Optionally, the rotating axis mirror group includes a first rotating axis mirror 204 and a second rotating axis mirror 205, the first rotating axis mirror 204 is used to reflect the laser beam 201 transmitted by the laser optical fiber 211 to the second rotating axis mirror 205, and the second rotating axis mirror 205 is used to reflect the laser beam 201 toward the target welding position.

[0061] The specific configuration of the rotating axis mirror group can reflect the laser beam 201 toward the target position to be welded.

[0062] Optionally, the laser welding device 200 further includes a first spectroscope 202, a second spectroscope 203, a visual monitoring optical fiber 210 and an analysis system; the spectroscope can set the transmittance and reflectance of light of different wavelengths as required to meet the requirements of the use environment.

[0063] The first beam splitter 202 is arranged on the optical path of the laser beam 201 and is located between the laser fiber 211 and the rotating axis mirror group. The first beam splitter 202 is used to transmit the laser from the laser fiber 211 to the rotating axis mirror group, and is used to reflect the visible light reflected back by the focusing lens 207 and the rotating axis mirror group to the second beam splitter 203. The second beam splitter 203 is used to receive the visible light reflected by the first beam splitter 202 and reflect the visible light to the visual monitoring optical fiber 210. The visual monitoring optical fiber 210 transmits the received visible light to the analysis system. The analysis system analyzes the image data in the received visible light to obtain weld quality information and plan the welding path.

[0064] That is, the laser light path is: laser fiber 211-first beam splitter 202-first rotating axis mirror 204-second rotating axis mirror 205-focusing lens 207; the visible light path is: focusing lens 207-second rotating axis mirror 205-first rotating axis mirror 204-first beam splitter 202-second beam splitter 203-visual monitoring fiber 210.

[0065] The laser reaches the welding position along the laser optical path to provide heat for welding, and the image information of the welding position is fed back to the analysis system through the visible light path under the action of the visual monitoring optical fiber 210, thereby obtaining weld quality information and planning the welding path.

[0066] Optionally, the frequency of visible light received by the analysis system through the visual monitoring optical fiber 210 is 500-1000 Hz.

[0067] Optionally, the analysis system and the control system are communicatively connected, and the welding path planned by the analysis system sends instructions to the rotating axis mirror group through the control system. The rotating axis mirror group is configured to adjust the rotation angle in real time according to the welding path planned by the analysis system, so that the laser focus moves according to the welding path.

[0068] In some embodiments, the first visible light reflector 202 is disposed between the first rotating axis mirror 204 and the laser fiber 211 . The first visible light reflector 202 also has the property of transmitting laser light. The laser beam 201 emitted from the laser fiber 211 passes through the first visible light reflector 202 and then projects onto the first rotating axis mirror 204 .

[0069] The present invention provides a method for welding a tool made of different materials, including:

[0070] On the positioning base plate 101 of the welding fixture 100 provided in the embodiment of the present application, workpieces to be welded of different materials are spliced, and a plurality of magnetic positioning members 103 are arranged in the chute 102 and fixed to the bottom of the chute by magnetic attraction. The plurality of magnetic positioning members 103 are arranged around the spliced ​​workpieces to be welded to limit the position of the spliced ​​workpieces to be welded;

[0071] The laser welding device 200 is used to perform laser welding on the workpieces to be welded after being limited.

[0072] Laser welding is used for welding instruments made of different materials (instruments with different materials in different parts). This method has high thermal efficiency and high welding quality, and can ensure the qualified rate of the instruments after welding.

[0073] like Figure 9 As shown, preferably, the parts to be welded are different parts of the tool 2, the different parts including the first part 4 including the blade and the second part 3 including the handle; the material of the first part 4 is wear-resistant and high-toughness steel.

[0074] The traditional tool 2 is forged in one piece from steel. Since different parts of the tool 2 have different material performance requirements, this application considers welding the different parts of the tool 2. However, most current welding methods for dissimilar materials are argon arc welding, which has low thermal efficiency and, most importantly, is prone to chipping after welding, making it difficult for the product to meet the requirements of use. In this application, laser welding of the dissimilar material tool 2 can significantly improve the problem of chipping after welding when performed under appropriate welding parameters.

[0075] Furthermore, the specific structure of the tool 2 can be of two types, the first type; Figure 2 As shown in the upper middle figure, the handle is the second part 3, and the rest is the first part 4; the second type: Figure 2 As shown in the lower middle figure, the blade is the first part 6 and the rest is the second part 5.

[0076] Optionally, to ensure high welding quality, the laser scanning speed is 200-600 mm / s, and the laser power is 1500-4000 W. Scanning methods can use patterns such as "0", "8", "∞", and sine scanning.

[0077] Optionally, the wear-resistant and high-toughness steel is M390, CPM3V or CPM10V powder steel, etc.

[0078] Optionally, the material used for the second part 3 / 5 is common steel, such as stainless steel, 3Cr steel, etc.

[0079] Optionally, in order to ensure the quality of the welded product, the thickness of the welded parts at the welding track is 1-2 mm.

[0080] The embodiment of the present invention further provides a steel part, which is welded by the welding method provided in the embodiment of the present invention. Specifically, the steel part is a cutting tool 2.

[0081] Example 1

[0082] A method for welding a tool 2 is provided, which is fixed by using the welding fixing device 100 provided by the present invention.

[0083] The structure of the finished tool 2 is as follows Figure 2 As shown in the figure above, the material of the first part 4 is M390 powder steel, and the material of the second part 3 is stainless steel. The place to be welded is the junction of the first part 4 and the second part 3, and the thickness here is 1mm.

[0084] The image information acquisition frequency is 1000 Hz, the laser scanning speed is 600 mm / s, the laser power is 1500 W, and the scanning is performed in an "O"-shaped pattern.

[0085] Example 2

[0086] This embodiment is basically the same as the first embodiment, except that:

[0087] The image information acquisition frequency is 500 Hz, the laser scanning speed is 500 mm / s, the laser power is 2400 W, and the scanning is performed in an "8"-shaped pattern.

[0088] Example 3

[0089] A method for welding a tool 2 is provided, which is fixed by using the welding fixing device 100 provided by the present invention.

[0090] The structure of the finished tool 2 is as follows Figure 2 As shown in the figure below, the material of the first part 4 is CPM10V powder steel, and the material of the second part 3 is 3Cr steel. The welding point is the junction of the first part 4 and the second part 3, and the thickness here is 2mm.

[0091] The image information acquisition frequency is 500 Hz, the laser scanning speed is 200 mm / s, the laser power is 4000 W, and the scanning is performed in an "O"-shaped pattern.

[0092] Comparative Example

[0093] This comparative example is basically the same as Example 1, except that argon arc welding is adopted, and the optimal welding parameters are selected for welding, namely, a current of 100 A, a voltage of 18-22 V, and a welding speed of 3.5 mm / s.

[0094] Experimental example

[0095] Mechanical properties were tested using a tensile test in accordance with GB / T 2651-2008 Tensile Test Method for Welded Joints. The test results are recorded in Table 1.

[0096] Table 1 Test results of various embodiments and comparative examples

[0097]

[0098] The tensile strength obtained in Example 1 is 641.28 MPa, the tensile strength obtained in Example 2 is 663.12 MPa, the tensile strength obtained in Example 3 is 670.21 MPa, and the tensile strength obtained in the comparative example is 530.98 MPa. The joint strength obtained in the examples is greater than that of the stainless steel base material and is more than 70% of the strength of M390 powder steel. This shows that for welding dissimilar materials, the laser welding method provided in the examples of the present application can achieve better results.

[0099] In summary, the welding fixture 100 provided by the present invention can fix the workpiece to be welded on the positioning base plate 101 through the magnetic positioning member 103 due to its specific structural arrangement, regardless of the shape and size of the workpiece to be welded.

[0100] The welding system and method for heterogeneous material tools provided by the utility model adopt laser welding to weld heterogeneous material tools, so the welding effect is good and the qualified rate is high. In particular, when welding the tool 2, the tool breakage phenomenon is not likely to occur.

[0101] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. A welding fixture, characterized in that: It includes a positioning base plate and a plurality of magnetic positioning members; The positioning base plate is provided with a plurality of slide grooves, and the bottom of each slide groove is magnetic; Each of the magnetic positioning members can generate magnetic attraction with the bottom of each of the chute; Each of the magnetic positioning parts includes a turntable, a yoke rotating sleeve, a completely identical first permanent magnet and a second permanent magnet, wherein the first permanent magnet is fixedly connected to the turntable, one end of the turntable extends into the yoke rotating sleeve so that the yoke rotating sleeve can rotate with the turntable as the axis, and the second permanent magnet is fixedly arranged in the yoke rotating sleeve, and the projections of the first permanent magnet and the second permanent magnet on the plane perpendicular to the turntable completely overlap.

2. The welding fixture according to claim 1, characterized in that: Each slide groove is in the shape of an elongated strip, and a plurality of the slide grooves are evenly distributed on the positioning base plate. One end of each slide groove extends to the edge of the positioning base plate and passes through the side wall of the positioning base plate.

3. The welding fixture according to claim 1, characterized in that: The longitudinal section of the chute is in the shape of a "convex" character, and the shape of the lower portion of the magnetic positioning member matches the shape of the chute.

4. A laser welding system for heterogeneous materials, characterized in that: It comprises the welding and fixing device and the laser welding device as described in any one of claims 1 to 3.

5. The laser welding system for different material tools according to claim 4, characterized in that: The laser welding device includes a laser source, a laser optical fiber, a rotating axis mirror group, a focusing lens and a control system; The laser source emits a laser beam which is transmitted through the laser optical fiber. The laser beam transmitted by the laser optical fiber is reflected toward the position to be welded under the action of the rotating axis mirror group, and a laser focus is formed at the position to be welded through the focusing lens. The control system is communicatively connected with the rotating axis mirror group. The control system sends instructions to the rotating axis mirror group according to the welding path to adjust the rotation angle in real time so that the laser focus moves along the welding path.

6. The laser welding system for different material tools according to claim 5, characterized in that: The rotating axis mirror group includes a first rotating axis mirror and a second rotating axis mirror, the first rotating axis mirror is used to reflect the laser beam transmitted by the laser optical fiber to the second rotating axis mirror, and the second rotating axis mirror is used to reflect the laser beam toward the target welding position.

7. The laser welding system for different material tools according to claim 5, characterized in that: The laser welding device also includes a first spectroscope, a second spectroscope, a visual monitoring optical fiber, and an analysis system; The first beam splitter is arranged on the optical path of the laser beam and is located between the laser optical fiber and the rotating axis mirror group. The first beam splitter is used to transmit the laser from the laser optical fiber to the rotating axis mirror group, and is used to reflect the visible light reflected back by the focusing lens and the rotating axis mirror group in sequence to the second beam splitter. The second beam splitter is used to receive the visible light reflected by the first beam splitter and reflect the visible light to the visual monitoring optical fiber. The visual monitoring optical fiber transmits the received visible light to the analysis system. The analysis system analyzes the image data in the received visible light to obtain weld quality information and plan the welding path.

8. The laser welding system for different material tools according to claim 7, characterized in that: The analysis system is communicatively connected to the control system, and the welding path planned by the analysis system sends instructions to the rotating axis mirror group through the control system. The rotating axis mirror group is configured to adjust the rotation angle in real time according to the welding path planned by the analysis system, so that the laser focus moves according to the welding path.

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