Multi-beam collaborative laser cladding metal additive manufacturing equipment and method thereof

Abstract

The invention relates to the technical field of laser additive manufacturing, in particular to multi-beam collaborative laser cladding metal additive manufacturing equipment and a method of the multi-beam collaborative laser cladding metal additive manufacturing equipment. The auxiliary laser beam scanning mechanism can execute positioning operation of a fixed position in the circumferential direction relative to the multi-beam spray head or rotate around the circumferential direction. According to the laser cladding forming device, preheating and surface roughening treatment on cladding materials, the surface of a substrate and the surface of a formed part in the forming process can be achieved through the scanning component of the auxiliary laser beam, the laser beam absorption rate and the laser beam utilization rate of the materials in the laser cladding process are greatly increased, and the laser cladding forming efficiency is promoted to be improved; the connection strength between the cladding layers or between the cladding layers and the base plate is guaranteed, and the performance of a formed part can be improved; and meanwhile, laser texture machining can be carried out on the cladding layer or the formed surface, and the surface appearance and the texture structure functional characteristics are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser additive manufacturing, and in particular to a multi-beam coordinated laser cladding metal additive manufacturing equipment and a method thereof. Background Art

[0002] In the field of metal additive manufacturing, it was found through searching that the patent authorization publication numbers CN107627002A laser cladding device, CN107217257A laser cladding device and CN106583726A laser multi-beam cladding device all have a common problem: only one laser beam light source is arranged on the nozzle, and the light source can only be used to promote the metallurgical bonding between the cladding material and the substrate; for the preheating and surface roughening of the cladding material and the preheating and surface roughening operations on the substrate surface, this light source cannot provide additional energy support, and even in the forming process, for the formed surface, the light source is unable to undertake the preheating, surface roughening and other tasks, and even on the surface of the formed part, the laser beam cannot be used to engrave the pattern or specific functional texture structure required by the customer.

[0003] Based on the above-mentioned limiting factors, the following problems exist in the disclosed patents: the melting efficiency of the cladding material is low, the surface of the substrate has a low absorption rate of energy, and the absorption rate of the formed material to the laser beam is low, which ultimately leads to a significant reduction in the forming efficiency of laser cladding. Although there are some methods for preheating wires and substrates on the market (such as using inductors or power supplies to directly preheat the wires or substrates), these solutions can only play a preheating role and cannot roughen the wires or substrates to improve their absorption rate to the laser beam. Similarly, they cannot improve the energy utilization rate of the laser beam and the forming efficiency of laser cladding, and cannot even perform laser texturing on the cladding layer or the formed surface to improve the surface appearance and texture structure functional characteristics. Summary of the invention

[0004] The present invention provides a multi-beam coordinated laser cladding metal additive manufacturing equipment and method thereof to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A multi-beam collaborative laser cladding metal additive manufacturing equipment includes an auxiliary laser beam scanning mechanism connected to the multi-beam nozzle, the auxiliary laser beam scanning mechanism can perform a fixed position positioning operation in the circumferential direction relative to the multi-beam nozzle, or perform a rotational movement around the circumferential direction, and the laser beam emitted by the auxiliary laser beam scanning mechanism is used to scan the feed nozzle of the multi-beam nozzle, the substrate, the cladding layer or the surface of the formed part.

[0006] Preferably, the auxiliary laser beam scanning mechanism includes a large gear fixedly connected to the multi-beam nozzle, a surround component connected to the teeth of the large gear, a support plate connected to the surround component, a laser and a drive component mounted on the support plate, and a first galvanometer and a second galvanometer connected to the drive component. The laser beam emitted by the laser is refracted onto the second galvanometer via the first galvanometer, and is refracted onto the feed nozzle of the multi-beam nozzle via the second galvanometer. The rotation of the drive component is used to cause the first galvanometer and the second galvanometer to change the direction of the laser beam emitted by the laser, so that the laser beam emitted by the laser can be refracted onto the substrate or the surface of the cladding layer. The support plate moves along the circumferential direction of the large gear through the surround component.

[0007] Preferably, the surround assembly includes a pinion and a first motor, the pinion is connected to the output end of the first motor and is simultaneously meshed with the teeth of the large gear, and the support plate is connected to the surface of the pinion away from the output end of the first motor.

[0008] Preferably, a rolling bearing is fixedly mounted on the large gear, an outer wall of the rolling bearing is fixedly connected to a mounting seat plate, and the first motor is fixedly mounted on the mounting seat plate.

[0009] Preferably, the driving assembly includes a second motor and a third motor, the first galvanometer is connected to an output end of the second motor, and the second galvanometer is connected to an output end of the third motor.

[0010] Preferably, the first galvanometer is located in front of the laser emitting end, the second galvanometer is located on one side of the feeding nozzle, and the second galvanometer is arranged below the first galvanometer.

[0011] Preferably, when the first galvanometer and the second galvanometer are located on the same horizontal plane, they are arranged to cross each other, and the crossing angle is a positive angle.

[0012] Preferably, the large gear is coaxially arranged with the feeding nozzle of the multi-beam nozzle.

[0013] Preferably, the material of the feeding nozzle is a transparent material.

[0014] The technical solution of the present application also provides a method for multi-beam collaborative laser cladding metal additive manufacturing equipment, including a scanning component consisting of a laser, a first galvanometer, a second galvanometer and a driving component, and a cladding component consisting of a multi-beam nozzle; Wherein, when the scanning component is in the initial state, the laser beam emitted by the laser scans at the feeding nozzle, and when the driving component is used to make the laser beam transmission path scan onto the substrate, the first scan is performed to perform a surface roughening treatment on the substrate; When the laser beam resets and scans the feeding nozzle, the cladding part is clad for the first time through the operation of the multi-beam nozzle; After the cladding layer is formed by the first cladding, the driving component is used to make the laser beam transmission path scan the surface of the cladding layer for a second scan to perform a surface roughening treatment on the cladding layer; When the laser beam is reset to scan the feeding nozzle again, the cladding part is clad for the second time through the operation of the multi-beam nozzle; After the cladding layer is formed by the second cladding, the driving component is used to make the laser beam transmission path scan the surface of the new cladding layer again to perform surface roughening treatment on the new cladding layer, and then cladding is performed; The product is formed through the reciprocating cooperation of the scanning component and the cladding component.

[0015] Preferably, the laser in the scanning component moves in a circular direction by working around the assembly to perform a comprehensive scanning of the substrate or the cladding layer surface by the laser beam.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are: In the present invention, the scanning component of the auxiliary laser beam can realize preheating and surface roughening of the cladding material, and the preheating and roughening of the substrate surface can also be realized. The surface of the forming surface in the forming process can also be preheated and roughened, which greatly improves the absorption rate and utilization rate of the laser beam by the material during the laser cladding process, promotes the improvement of laser cladding forming efficiency, ensures the connection strength between the cladding layer and the cladding layer or between the cladding layer and the substrate, and helps to improve the performance of the formed part. At the same time, the scanning laser beam is used to scan the surface of the formed part to repair the powder adhered to the surface, improve the surface roughness, and even carve out any texture structure according to customer needs for use as an appearance appreciation, and can also be used as a functional structural feature, such as the texture structure can be used as a heat dissipation structure or a surface strengthening structure.

[0017] In the present invention, the small gear rotates around the large gear through the driving of the first motor, so that the laser, the first galvanometer and the second galvanometer on the support plate move in a circular direction, so that the laser beam generated by the laser can rotate around the feeding nozzle of the multi-beam nozzle, ensuring the preheating of the powder or wire in the internal channel of the feeding nozzle, improving the cladding efficiency, and on this basis, in conjunction with the work of the driving component, the laser beam of the laser can scan any position within a certain space, which has a certain practical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the side planar structure of the present invention.

[0020] Figure 3 It is a schematic diagram of a top view of a partial structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the laser beam scanning feeding nozzle of the present invention.

[0022] Figure 5 It is a schematic diagram of scanning a substrate with a laser beam of the laser of the present invention.

[0023] Figure 6 It is a three-dimensional schematic diagram of the laser beam scanning the substrate cladding layer of the present invention.

[0024] Figure 7 It is a schematic diagram of the printing state of the present invention.

[0025] Figure 8 Schematic diagram of the working principles of the first galvanometer and the second galvanometer.

[0026] In the figure: 1. multi-beam nozzle; 2. large gear; 3. support plate; 4. laser; 5. first galvanometer; 6. second galvanometer; 7. feed nozzle; 8. substrate; 9. small gear; 10. first motor; 11. rolling bearing; 12. mounting plate; 13. second motor; 14. third motor. DETAILED DESCRIPTION

[0027] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0028] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Embodiment 1

[0031] like Figure 1-Figure 8 As shown, the present invention provides a multi-beam collaborative laser cladding metal additive manufacturing equipment, including an auxiliary laser beam scanning mechanism connected to the multi-beam nozzle 1, the auxiliary laser beam scanning mechanism can perform a fixed position positioning operation in the circumferential direction relative to the multi-beam nozzle 1, or perform a rotational movement around the circumferential direction, the laser beam emitted by the auxiliary laser beam scanning mechanism is used to scan the feed nozzle 7 of the multi-beam nozzle 1, the substrate 8, the cladding layer or the surface of the formed part.

[0032] As a further feature, the auxiliary laser beam scanning mechanism includes a large gear 2 fixedly connected to the multi-beam nozzle 1, a surround component connected to the teeth of the large gear 2, a support plate 3 connected to the surround component, a laser 4 and a drive component mounted on the support plate 3, and a first galvanometer 5 and a second galvanometer 6 connected to the drive component. The laser beam emitted by the laser 4 is refracted onto the second galvanometer 6 via the first galvanometer 5, and then refracted onto the feed nozzle 7 of the multi-beam nozzle 1 via the second galvanometer 6. The rotation of the drive component is used to cause the first galvanometer 5 and the second galvanometer 6 to change the direction of the laser beam emitted by the laser 4 (indicated by the red line in the figure), so that the laser beam emitted by the laser 4 can be refracted onto the substrate 8 or the surface of the cladding layer. The support plate 3 moves along the circumferential direction of the large gear 2 through the surround component.

[0033] in, Figure 8 2 is the working principle of the first galvanometer 5 and the second galvanometer 6. In the figure, galvanometer 1 represents the first galvanometer, and galvanometer 2 represents the second galvanometer.

[0034] As a further step, the multi-beam nozzle 1 includes a wire feeding tube bracket, a collimator mechanism, a reflective focusing mirror mechanism, a spectroscope mechanism and a reflective light path through hole, the feeding nozzle 7 is fixedly installed at the bottom end of the wire feeding tube bracket, the collimator mechanism corresponds to the wire feeding tube bracket, the laser beam emitted from the collimator mechanism can be projected onto the spectroscope of the spectroscope mechanism, the spectroscope divides the laser beam into multiple beams and projects them onto the reflective focusing mirror of the corresponding reflective focusing mirror mechanism, the laser beam reflected by the reflective focusing mirror is projected onto the substrate 8 below the feeding nozzle 7 of the multi-beam nozzle 1 through the reflective light path through hole (refer to Figure 4 , Figure 5 or Figure 6 As shown by the black line in the middle, this technology has been described in the publicly authorized patent proposed in the background technology. This article simply describes the structure of the multi-beam nozzle 1 in general. The application effect produced by the structure of the multi-beam nozzle 1 is similar to the technology in the publicly authorized patent, which can be well known and applied by those skilled in the art, and will not be elaborated in this article.

[0035] Combination Figure 1 and Figure 3 As shown, as a further example, the surrounding assembly includes a pinion 9 and a first motor 10, the pinion 9 is connected to the output end of the first motor 10, and is simultaneously meshed with the teeth of the large gear 2 to enable the laser beam scanning equipment to move in a circular motion, and the support plate 3 is connected to the surface of the pinion 9 away from the output end of the first motor 10.

[0036] Among them, the small gear 9 is driven by the first motor 10 to rotate around the large gear 2, so that the laser 4, the first galvanometer 5 and the second galvanometer 6 on the support plate 3 can move in a circular direction, so that the laser beam generated by the laser 4 can rotate around the feeding nozzle 7 of the multi-beam nozzle 1, ensuring the preheating of the powder or wire in the internal channel of the feeding nozzle 7, thereby improving the cladding efficiency. At the same time, on this basis, in conjunction with the work of the driving component, the laser beam of the laser 4 can scan any position within a certain space.

[0037] As a further feature, a rolling bearing 11 is fixedly mounted on the large gear 2, and a mounting seat plate 12 is fixedly connected to the outer wall of the rolling bearing 11, and the first motor 10 is fixedly mounted on the mounting seat plate 12, wherein the rolling bearing 11 and the mounting seat plate 12 mainly play a supporting role. When the first motor 10 starts to run, the small gear 9 will rotate around the large gear 2 at a certain angle, but during rotation, the small gear 9 has no support point, so it will be easy to damage the machine equipment. Therefore, the design of the rolling bearing 11 and the mounting seat plate 12 can support the normal operation of the small gear 9 and the large gear 2.

[0038] As a further feature, the driving assembly includes a second motor 13 and a third motor 14, the first galvanometer 5 is connected to the output end of the second motor 13, and the second galvanometer 6 is connected to the output end of the third motor 14, wherein the connection between the motor and the galvanometer can be connected by a deceleration structure during actual operation, so that when the motor moves, the galvanometer can slowly change its angle to ensure that the laser beam refracted by the galvanometer can accurately scan the feed nozzle 7, substrate 8 or cladding layer.

[0039] Among them, the reduction structure includes but is not limited to a harmonic gear reduction structure, a worm gear reduction structure and a gear reduction structure, and the above-mentioned reduction structures all adopt existing conventional technologies and have been widely used in various industries. Although this article will not elaborate on this technology in detail, technicians in this field can be familiar with and apply it through common sense.

[0040] Combination Figure 2 and Figure 5 As shown, further, the first galvanometer 5 is located in front of the emitting end of the laser 4 , the second galvanometer 6 is located on one side of the feeding nozzle 7 , and the second galvanometer 6 is arranged below the first galvanometer 5 .

[0041] Among them, the first galvanometer 5 is located in the emission direction of the emission end of the laser 4. When the emitted laser beam is irradiated on the first galvanometer 5, the second motor 13 is operated to drive the angle of the first galvanometer 5 to change, so that the laser beam refracted by the first galvanometer 5 can change its position on the second galvanometer 6, and the third motor 14 is operated to drive the angle of the second galvanometer 6 to change, so that the laser beam refracted by the second galvanometer 6 can change its position on the feeding nozzle 7, the substrate 8 or the cladding layer.

[0042] Furthermore, when the laser beam is scanned on the feed nozzle 7, the cladding material can be preheated, and when it is scanned on the substrate 8, the surface of the substrate 8 can be preheated and roughened. When it is scanned on the formed cladding layer, the surface of the cladding layer can be preheated and roughened. Therefore, the present invention greatly improves the absorption rate of the laser beam by the material in the laser cladding process through this auxiliary laser beam scanning device, improves the laser beam energy utilization rate and the laser cladding forming efficiency.

[0043] Furthermore, the positional relationship between the first galvanometer 5 and the second galvanometer 6 when they are located on the same horizontal plane is a cross-setting arrangement, and the crossing angle is a positive angle. Through this design, it is ensured that the laser beam emitted by the laser 4 can be accurately scanned on the feed nozzle 7, the substrate 8 or the cladding layer, and when the laser beam emitted by the laser 4 passes through the first galvanometer 5 and the second galvanometer 6, the laser beam can be scanned onto the cladding layer or the surface of the formed part. A specific texture structure can be formed on the surface of the formed part according to customer needs, thereby improving the appearance or structural characteristics of the formed part, making it present a more refined, beautiful and textured external feature, meeting higher standards of use.

[0044] As a further step, the large gear 2 is coaxially arranged with the feed nozzle 7 of the multi-beam nozzle 1. By coaxially arranging the large gear 2 and the feed nozzle 7, it is ensured that the surrounding assembly can drive the laser 4, the first galvanometer 5 and the second galvanometer 6 to rotate with the feed nozzle 7 as the center, thereby ensuring comprehensive processing of the surface of the substrate 8 and the surface of the cladding layer.

[0045] As a further feature, the material of the feeding nozzle 7 is a transparent material, including but not limited to a transparent glass material, or any material that can transmit the laser beam to the surface of the wire or powder beam inside the feeding nozzle 7. As an implementation mode, the transparent material of the feed nozzle 7 can be composed of quartz glass, and a coating is added to the surface thereof, which can improve the transmittance of the laser and reduce the loss during the transmission of the laser beam, thereby facilitating the injection of most of the energy into the surface of the wire, thereby improving the wire's absorption of the laser beam for surface roughening and preheating. Embodiment 2

[0046] like Figure 1-Figure 8 As shown, the technical solution of the present application also provides a method for multi-beam collaborative laser cladding metal additive manufacturing equipment, including a scanning component consisting of a laser 4, a first galvanometer 5, a second galvanometer 6 and a driving component, and a cladding component consisting of a multi-beam nozzle 1; Among them, when the scanning component is in the initial state, the laser beam emitted by the laser 4 is scanned at the feeding nozzle 7, which can preheat the powder or wire passing through the internal channel of the feeding nozzle 7 to improve the cladding efficiency. When the second motor 13 and the third motor 14 in the driving component are operated, the first galvanometer 5 and the second galvanometer 6 can scan the laser beam transmission path onto the substrate 8 to perform the first laser beam scanning, so as to perform the surface roughening treatment of the substrate 8, so as to make the surface of the substrate 8 rough, and improve the absorption rate of the substrate 8 to the laser beam energy and the energy utilization rate; Based on the transmission path of the laser beam emitted by the laser 4, when the second motor 13 and the third motor 14 work to make the first galvanometer 5 and the second galvanometer 6 cause the laser beam to reset and scan the feed nozzle 7, the laser beam can preheat the cladding material through the feed nozzle 7 of the transparent material. During this period, the cladding component is clad on the substrate 8 for the first time through the operation of the multi-beam nozzle 1, and because the substrate 8 has been roughened, the cladding layer is more sufficient when it contacts the surface of the substrate 8, and the cladding quality becomes better; After the cladding layer is formed by the first cladding, the second motor 13 and the third motor 14 in the driving assembly are used to scan the laser beam transmission path to the surface of the cladding layer for a second scan to roughen the surface of the cladding layer. Considering that the surface of the cladding layer is smooth or the cladding layer is composed of a high-reflective material, the surface is roughened by scanning the laser beam, thereby effectively improving the absorption rate of the cladding layer to the laser beam and the energy utilization rate; When the laser beam is reset to scan the feeding nozzle 7 again by the operation of the second motor 13 and the third motor 14, the cladding component is clad for the second time by the operation of the multi-beam nozzle 1, so as to ensure that the new cladding layer is in full contact with the cladding layer after the surface roughening treatment, so as to improve the cladding quality; After the second cladding is performed to form the cladding layer, the driving component is used to make the laser beam transmission path scan the surface of the new cladding layer again to perform surface roughening treatment on the new cladding layer, and then the cladding is performed again. Similarly, scanning the cladding layer or the surface of the formed part again can effectively improve the laser beam absorption; Finally, the product is formed through the reciprocating cooperation between the scanning component and the cladding component.

[0047] As a further step, the laser 4, the first galvanometer 5 and the second galvanometer 6 in the scanning component move in a circular direction by driving the pinion 9 through the first motor 10 in the surrounding assembly, so as to perform a comprehensive scanning of the substrate 8 or the surface of the cladding layer by the laser beam. It is worth noting that when the laser 4 moves in a circular direction, there is a certain rotation angle in the forward and reverse directions, which can ensure the normal operation of the equipment.

[0048] In summary, the present invention can achieve preheating and surface roughening of the cladding material by adding auxiliary laser beam scanning equipment to the multi-beam nozzle 1, and preheating and roughening the surface of the substrate 8 at the same time, and even preheating and roughening the already formed surface during the forming process; the absorption rate of the material to the laser beam during the laser cladding process is greatly improved, and the material is also preheated during the roughening process, thereby improving the utilization rate of the laser beam energy and the laser cladding forming efficiency. In addition, through the surface roughening of the substrate 8 or laser surface texturing, the bonding ability of the formed part and the substrate can be improved, the connection strength between the cladding layer and the substrate can be improved, and the connection strength between the cladding layer of the formed part can be improved, which provides certain advantages for improving the relevant mechanical properties of the formed part.

[0049] Furthermore, the present invention uses a scanning laser beam to scan the surface of the formed part, which can repair the powder adhered to the surface, improve the roughness uniformity and quality of the surface of the formed part, and greatly improve its surface state. At the same time, the scanning laser beam of the present invention can also carve out any texture structure according to customer needs for use as an appearance appreciation to meet application scenarios with high requirements for appearance quality. In addition, it can also be used as a functional structural feature. For example, the texture structure formed can be designed as a heat dissipation structure to enhance the heat dissipation performance of the part, or as a surface strengthening structure to improve the hardness of the part surface.

[0050] It should be noted that the above-mentioned printing method is only a case proposed for the cladding of the present invention and is not limited to the operation process described in this article. As long as the surface of the substrate 8 or the formed surface needs to be roughened during the laser cladding process, a similar method can be used.

[0051] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multi-beam collaborative laser cladding metal additive manufacturing equipment, characterized in that: The invention comprises an auxiliary laser beam scanning mechanism connected to a multi-beam nozzle (1), wherein the auxiliary laser beam scanning mechanism is capable of performing a fixed position positioning operation in a circumferential direction relative to the multi-beam nozzle (1), or performing a rotational movement around a circumferential direction, and wherein the laser beam emitted by the auxiliary laser beam scanning mechanism is used to scan a feed nozzle (7) of the multi-beam nozzle (1), a substrate (8), a cladding layer or a surface of a formed part.

2. The multi-beam collaborative laser cladding metal additive manufacturing equipment according to claim 1 is characterized in that: The auxiliary laser beam scanning mechanism comprises a large gear (2) fixedly connected to the multi-beam nozzle (1), a surrounding component connected to the teeth of the large gear (2), a support plate (3) connected to the surrounding component, a laser (4) and a driving component mounted on the support plate (3), and a first galvanometer (5) and a second galvanometer (6) connected to the driving component. The laser beam emitted by the laser (4) is refracted onto the second galvanometer (6) via the first galvanometer (5), and then refracted onto the feeding nozzle (7) of the multi-beam nozzle (1) via the second galvanometer (6). The rotation of the driving component is used to cause the first galvanometer (5) and the second galvanometer (6) to change the direction of the laser beam emitted by the laser (4), so that the laser beam emitted by the laser (4) can be refracted onto the substrate (8) or the surface of the cladding layer. The support plate (3) moves along the circumferential direction of the large gear (2) through the surrounding component.

3. The multi-beam collaborative laser cladding metal additive manufacturing equipment according to claim 2 is characterized in that: The surround assembly comprises a pinion (9) and a first motor (10), wherein the pinion (9) is connected to the output end of the first motor (10) and is simultaneously meshedly connected to the teeth of the large gear (2), and the support plate (3) is connected to the surface of the pinion (9) away from the output end of the first motor (10).

4. The multi-beam collaborative laser cladding metal additive manufacturing equipment according to claim 3 is characterized in that: A rolling bearing (11) is fixedly mounted on the large gear (2), an outer wall of the rolling bearing (11) is fixedly connected to a mounting seat plate (12), and the first motor (10) is fixedly mounted on the mounting seat plate (12).

5. The multi-beam collaborative laser cladding metal additive manufacturing equipment according to claim 1, characterized in that: The driving component comprises a second motor (13) and a third motor (14), the first galvanometer (5) is connected to the output end of the second motor (13), and the second galvanometer (6) is connected to the output end of the third motor (14).

6. The multi-beam collaborative laser cladding metal additive manufacturing equipment according to claim 1, characterized in that: The first galvanometer (5) is located in front of the emitting end of the laser (4), the second galvanometer (6) is located on one side of the feeding nozzle (7), and the second galvanometer (6) is arranged below the first galvanometer (5).

7. The multi-beam coordinated laser cladding metal additive manufacturing equipment according to claim 6, characterized in that: When the first galvanometer (5) and the second galvanometer (6) are located on the same horizontal plane, their positional relationship is that they are arranged to cross each other, and the crossing angle is a positive angle.

8. The multi-beam coordinated laser cladding metal additive manufacturing equipment according to claim 1, characterized in that: The large gear (2) is coaxially arranged with the feeding nozzle (7) of the multi-beam nozzle (1).

9. The multi-beam coordinated laser cladding metal additive manufacturing equipment according to claim 1, characterized in that: The material of the feeding nozzle (7) is a transparent material.

10. A method for using the multi-beam collaborative laser cladding metal additive manufacturing equipment according to any one of claims 1 to 9, characterized in that: It comprises a scanning component consisting of a laser (4), a first galvanometer (5), a second galvanometer (6) and a driving component, and a cladding component consisting of a multi-beam nozzle (1); In the initial state of the scanning component, the laser beam emitted by the laser (4) scans the feeding nozzle (7), and when the driving component works, the laser beam transmission path is scanned onto the substrate (8), and the first scan is performed to perform a surface roughening treatment on the substrate (8); When the laser beam is reset to scan the feed nozzle (7), the cladding component is clad for the first time through the operation of the multi-beam nozzle (1); After the cladding layer is formed by the first cladding, the driving component is used to make the laser beam transmission path scan the surface of the cladding layer for a second scan to perform a surface roughening treatment on the cladding layer; When the laser beam is reset to scan the feed nozzle (7) again, the cladding component is clad for the second time through the operation of the multi-beam nozzle (1); After the cladding layer is formed by the second cladding, the driving component is used to make the laser beam transmission path scan the surface of the new cladding layer again to perform surface roughening treatment on the new cladding layer, and then cladding is performed; The product is formed through the reciprocating cooperation of the scanning component and the cladding component.

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