Hammering reinforcement device for electric arc additive manufacturing

Abstract

The application discloses a hammering reinforcing device for electric arc additive manufacturing and relates to the field of electric arc additive manufacturing, and comprises a mechanical arm installed on one side of a workbench, an electric arc depositor arranged at the tail end of the mechanical arm, a reinforcing assembly arranged on the circumferential outer side of the electric arc depositor, and a wire feeding assembly arranged on the circumferential outer side of the electric arc depositor, wherein the mechanical arm is configured as a movable frame for driving the electric arc depositor, the reinforcing assembly and the wire feeding assembly to move, and the reinforcing assembly and the wire feeding assembly are arranged in linkage with the electric arc depositor; the application realizes self-adaptive conformal fitting and stable rolling of the side surface of a deposition layer through unilateral active roller pressing cooperation and opposite flexible relying roller pressing, and simultaneously realizes vertical direction impact reinforcement by a rear-end hammering unit, so that the problems of poor contact and uneven pressure of the existing double-roller opposite structure are solved, and the deposition layer density, surface quality and interlayer bonding strength are improved.

Description

Technical Field

[0001] This invention relates to the field of electric arc additive manufacturing, specifically a hammering strengthening device for electric arc additive manufacturing. Background Technology

[0002] Wafer arc additive manufacturing (WAAM) has attracted widespread attention due to its high deposition efficiency, low cost, and applicability to the forming of large metal components.

[0003] This process is prone to defects such as porosity, coarse grains, residual stress, and poor interlayer bonding during the layer-by-layer deposition process, which seriously affect the mechanical properties and dimensional accuracy of the formed parts. To improve these defects, researchers have proposed a variety of online plastic deformation strengthening methods combined with WAAM. Among them, the hammering and rolling composite process equipment is relatively simple and has a significant strengthening effect. However, existing hammering and rolling composite devices still have obvious limitations. For example, the rolling mechanism mostly adopts a double-roller opposing structure to clamp and roll the deposited layer on both sides. This method has poor adaptability to changes in wall thickness and makes it difficult to ensure uniform contact and stable pressure on the sides of the complex curved deposited layer. When rolling the deposited layer on the sides, it is difficult to effectively adapt to the curvature changes and wall thickness fluctuations of the deposited layer surface, which can easily lead to local pressure concentration or poor contact, affecting the consistency of the strengthening effect.

[0004] Therefore, it is necessary to provide a hammering strengthening device for arc additive manufacturing to solve the above-mentioned technical problems. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hammering strengthening device for arc additive manufacturing, comprising:

[0006] A robotic arm, which is mounted on one side of the workbench;

[0007] An arc depositor is disposed at the end of the robotic arm;

[0008] A reinforcement component is disposed on the circumferential outer side of the arc depositor;

[0009] A wire feeding assembly is disposed on the circumferential outer side of the arc depositor;

[0010] The robotic arm is configured as a movable frame that drives the arc depositor, the reinforcing component, and the wire feeding component to move, and the reinforcing component and the wire feeding component are both linked to the arc depositor.

[0011] Further, preferably, the reinforcing component includes:

[0012] A positioning assembly is disposed on the circumferential outer side of the arc depositor;

[0013] A drive roller assembly is disposed on the side of the positioning assembly away from the arc depositor, and the drive roller assembly includes a fixed side and a sliding side disposed opposite to each other;

[0014] A flexible support roller is disposed on the fixed side of the drive roller assembly;

[0015] An active pressure roller is disposed on the sliding side of the drive roller assembly;

[0016] A hammering unit is located on the other side of the drive roller assembly.

[0017] Further, preferably, the positioning component includes:

[0018] The first motor is fixedly mounted on the outer wall of the arc depositor;

[0019] A limiting block is fixedly mounted on the outer wall of the arc depositor and located below the first motor;

[0020] A threaded rod is disposed between the first motor and the limiting block, and the threaded rod is connected to the output end of the first motor;

[0021] A slide block is fitted onto the threaded rod and is threadedly engaged with the threaded rod;

[0022] A limiting plate is disposed between the first motor and the limiting block, and the limiting plate is in contact with the slide block.

[0023] Further, preferably, the drive roller assembly includes:

[0024] A positioning plate, which is inverted T-shaped, is disposed on the side of the positioning assembly away from the arc depositor;

[0025] A fixing block is fixedly disposed between the vertical plate of the positioning plate and the slide block;

[0026] A pneumatic rod, the base of which is hinged to the bottom of the fixed block;

[0027] A slide rail is provided at the other end of the horizontal plate of the positioning plate, and the slide rail is parallel to the horizontal plate;

[0028] A slider, which is slidably disposed on the slide rail;

[0029] The first connecting rod has one end hinged to the output end of the pneumatic rod and the other end hinged to one end of the horizontal plate of the positioning plate.

[0030] The second connecting rod has one end hinged to the output end of the pneumatic rod and the other end hinged to the slider.

[0031] Further, preferably, the flexible roller includes:

[0032] The first roller frame is fixedly mounted on the horizontal plate of the positioning plate at one end, which is hinged to the first connecting rod, and the first roller frame is parallel to the vertical plate of the positioning plate.

[0033] Multiple positioning blocks, with their gaps set within the first roller frame;

[0034] Multiple roller groups are arranged in an array between the positioning blocks;

[0035] An airbag is disposed between the roller group and the first roller frame;

[0036] An air pump is located at the top of the first roller frame, and the output end of the air pump is connected to the air bag;

[0037] Two first sliding rods are respectively slidably embedded in the upper and lower ends of the first roller frame, and both are located on the side close to the roller group;

[0038] The first spring is sleeved on the first slide rod;

[0039] The first universal joint is disposed between the first slide bars, and the first universal joint passes through each of the roller groups in sequence;

[0040] A second spring is disposed between the roller groups and is sleeved on the first universal joint.

[0041] Further, as a preferred embodiment, the first gimbal includes:

[0042] Two bearing seats are respectively disposed on the first slide bar on the side near the roller group;

[0043] Multiple deflection shafts are sequentially hinged together, and the deflection shafts at both ends are hinged to the corresponding bearing seats. The deflection shafts are rotatably embedded in the roller group.

[0044] Further, preferably, the roller set includes:

[0045] A roller seat, which is slidably disposed between adjacent positioning blocks;

[0046] A deflector seat is disposed on the side of the roller seat away from the airbag;

[0047] A ball seat is disposed between the deflector seat and the roller seat;

[0048] Two push rods are symmetrically and slidably embedded in the roller seat and distributed on both sides of the ball seat. One end of the push rod is movably connected to the deflection seat, and the other end is connected to the airbag.

[0049] The first pressure roller is disposed within the deflection seat;

[0050] The deflection shaft passes through the deflection seat and the first pressure roller.

[0051] Further, preferably, the active pressure roller includes:

[0052] The second roller frame is disposed on the slider and is arranged parallel to the first roller frame;

[0053] Two second slide rods are respectively slidably embedded in the upper and lower ends of the second roller frame, and both are located on the side close to the flexible support roller;

[0054] The second universal joint is disposed between the second sliding rods;

[0055] The second pressure roller is rotatably mounted on the second universal joint.

[0056] Compared with the prior art, the present invention provides a hammering strengthening device for arc additive manufacturing, which has the following beneficial effects:

[0057] This device uses an array of independent deflection rollers, combined with airbag drive, to enable each first pressure roller to deflect independently according to the local curvature of the deposited layer surface, achieving adaptive conformal bonding to complex curved surfaces and solving the problems of poor contact and uneven pressure distribution in traditional double-roller opposing structures.

[0058] In this device, the active pressure roller achieves flexible floating through the second slide bar and the second universal rod, while the opposite flexible roller is driven by the airbag and supported by the array of rollers. Together, they form a roller pressing mode of "active rigid pressure - opposite flexible support", which adapts to the curvature changes of the side of the deposition layer in real time and ensures the stability and pressure uniformity of the roller pressing process.

[0059] The hammering unit of this device is located at the rear end of the drive roller assembly. After the side rolling is completed, it immediately applies a vertical impact to the surface of the deposited layer, realizing the sequential synergy of "rolling first, then hammering". This can refine the grain structure, eliminate residual stress, seal surface micro-cracks, and improve the density, surface quality and interlayer bonding strength of the deposited layer. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the assembly of a hammer-strengthening device for arc additive manufacturing;

[0061] Figure 2 for Figure 1 Enlarged diagram of A in the middle;

[0062] Figure 3 A structural diagram to reinforce the components;

[0063] Figure 4 This is a schematic diagram of the flexible roller structure.

[0064] Figure 5 This is a schematic diagram of the cross-sectional structure of a flexible roller.

[0065] In the diagram: 1. Robotic arm; 2. Reinforcing component; 21. Adjustment component; 211. First motor; 212. Slide; 213. Threaded rod; 214. Limiting plate; 215. Limiting block; 22. Drive roller assembly; 221. Pneumatic rod; 222. First connecting rod; 223. Second connecting rod; 224. Positioning plate; 225. Slide rail; 226. Slider; 227. Fixing block; 23. Hammering unit; 24. Flexible support roller; 241. First roller frame; 242. First universal joint 243. First slide bar; 244. First spring; 245. Shaft seat; 246. Deflection shaft; 247. Second spring; 248. First pressure roller; 249. Roller seat; 25. Air pump; 250. Deflection seat; 251. Ball seat; 252. Push rod; 253. Airbag; 254. Positioning block; 26. Active pressure roller; 261. Second roller frame; 262. Second slide bar; 263. Second universal rod; 264. Second pressure roller; 3. Arc depositor; 4. Wire feeding assembly. Detailed Implementation

[0066] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms are interchangeable where appropriate; this is merely a distinguishing method used to describe objects with the same attributes in the embodiments of this application. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, so that a process, method, system, product, or apparatus that comprises a series of elements is not necessarily limited to those elements but may include other elements not explicitly listed or inherent to those processes, methods, products, or apparatuses.

[0067] Example: Please refer to Figures 1-5 In this embodiment of the invention, a hammering strengthening device for arc additive manufacturing is provided, comprising:

[0068] Robotic arm 1, which is mounted on one side of the workbench;

[0069] Arc depositor 3 is disposed at the end of the robotic arm 1;

[0070] Reinforcing component 2 is disposed on the circumferential outer side of the arc depositor 3;

[0071] The wire feeding assembly 4 is disposed on the circumferential outer side of the arc depositor 3;

[0072] The robotic arm 1 is configured as a movable frame that drives the arc depositor 3, the reinforcing component 2 and the wire feeding component 4 to move, and the reinforcing component 2 and the wire feeding component 4 are both linked to the arc depositor 3.

[0073] When printing (i.e., arc additive manufacturing) is required, the model data of the workpiece to be formed is first imported into the control system of the robotic arm 1. Then, the robotic arm 1 moves automatically on the pre-prepared forming substrate according to the preset path plan. During the movement, the arc depositor 3 generates high temperature through the arc, continuously melting the metal wire conveyed by the wire feeding assembly 4, and depositing it layer by layer on the substrate or the previous deposition layer to form a cladding deposition layer.

[0074] When the deposited layer is in a semi-solid state, that is, not yet fully solidified but still possessing a certain degree of plasticity, the strengthening component 2, driven by the robotic arm 1, performs a strengthening treatment on the deposited layer. The strengthening treatment includes:

[0075] Vertical hammering: Applying impact force to the surface of the deposited layer to refine grains and eliminate porosity and residual stress;

[0076] Lateral rolling action: Applying continuous pressure to the sides of the deposited layer to improve the quality of interlayer bonding, increase surface smoothness and forming accuracy.

[0077] The hammering and rolling processes described above are continuously completed by the strengthening component 2 as it moves synchronously with the arc depositor 3, thereby achieving real-time strengthening of the deposited layer.

[0078] In this embodiment, refer to the appendix. Figure 3 The reinforcement component 2 includes:

[0079] The positioning component 21 is located on the circumferential outer side of the arc depositor 3 and is used to adjust the vertical position of the reinforcing component 2 to adapt to different deposition layer heights and rolling process requirements.

[0080] The drive roller assembly 22 is disposed on the side of the positioning assembly 21 away from the arc depositor 3, and the drive roller assembly 22 has a fixed side and a sliding side disposed opposite to each other.

[0081] The flexible roller 24 is disposed on the fixed side of the drive roller assembly 22 and is used to maintain flexible contact with the deposited layer during operation;

[0082] An active pressure roller 26 is disposed on the sliding side of the drive roller assembly 22 and is used to apply controllable roller pressure to the deposited layer;

[0083] The hammering unit 23, which is located on the other side of the drive roller assembly 22, is used to apply a vertical impact force to the surface of the deposited layer.

[0084] During the operation, the treatment of the deposited layer by the reinforcement component 2 includes the following steps:

[0085] a. Vertical position adjustment: Adjust the positioning component 21 in real time according to the current height of the deposited layer and the requirements of the rolling process to change the overall vertical position of the reinforcing component 2, thereby adjusting the deposited layer area of ​​the rolling process.

[0086] b. Pre-compression and initial bonding: Before starting the side rolling, the flexible support roller 24 needs to be adjusted to establish an initial pre-compression pressure with one side of the deposited layer to achieve a tight bond and provide a stable support foundation for the subsequent active rolling.

[0087] c. Active pressure roller pressing: After the flexible support roller 24 completes the bonding, the active pressure roller 26 is adjusted to press against the other side of the deposited layer, forming a clamping roller pressing structure of "active pressure roller - deposited layer - flexible support roller".

[0088] d. Follow-up roller pressing and adaptive adjustment: During the process of the robotic arm 1 driving the reinforcing component 2 to move along the deposition path, the active pressure roller 26 continuously rolls the deposition layer from the side according to the preset pressure value; when the wall thickness of the deposition layer changes, the flexible roller 24 can adapt to the curvature change of the deposition layer surface and always keep in contact with the deposition layer to achieve adaptive flexible following, ensuring the uniformity of roller pressure and the stability of the deposition layer.

[0089] While the single-sided active roller pressing applies controllable active roller pressure to the deposition layer, the flexible support on the opposite side can effectively absorb the impact and deviation caused by wall thickness fluctuations, thereby improving the forming quality of the side of the deposition layer and the bonding strength between layers.

[0090] Furthermore, the adjustment component 21 includes:

[0091] The first motor 211 is fixedly mounted on the outer wall of the arc depositor 3 and serves as the driving source for the adjustment assembly 21.

[0092] The limiting block 215 is fixedly disposed on the outer wall of the arc depositor 3 and located below the first motor 211;

[0093] A threaded rod 213 is disposed between the first motor 211 and the limiting block 215, and the threaded rod 213 is connected to the output end of the first motor 211;

[0094] The slide 212 is sleeved on the threaded rod 213 and is threadedly engaged with the threaded rod 213;

[0095] The limiting plate 214 is disposed between the first motor 211 and the limiting block 215. The limiting plate 214 is in contact with the slide 212 and is used to guide the slide 212 to move linearly in the vertical direction and prevent it from circumferentially deflecting.

[0096] When the vertical position needs to be adjusted, the first motor 211 is started to drive the threaded rod 213 to rotate, and the slide block 212 moves along the vertical direction of the threaded rod 213 under the action of the threaded engagement.

[0097] Further, the drive roller assembly 22 includes:

[0098] The positioning plate 224 is in the shape of an inverted T and is disposed on the side of the adjustment component 21 away from the arc depositor 3.

[0099] A fixing block 227 is fixedly disposed between the vertical plate of the positioning plate 224 and the slide block 212;

[0100] The pneumatic rod 221 has its base hinged to the bottom of the fixed block 227;

[0101] A slide rail 225 is disposed at the other end of the horizontal plate of the positioning plate 224, and the slide rail 225 is parallel to the horizontal plate;

[0102] Slider 226 is slidably disposed on slide rail 225;

[0103] The first connecting rod 222 has one end hinged to the output end of the pneumatic rod 221 and the other end hinged to one end of the horizontal plate of the positioning plate 224.

[0104] The second connecting rod 223 has one end hinged to the output end of the pneumatic rod 221 and the other end hinged to the slider 226.

[0105] When the pneumatic rod 221 extends, its output end pushes the first connecting rod 222 and the second connecting rod 223 to move synchronously. During this process, the first connecting rod 222, which is hinged to the fixed end of the horizontal plate of the positioning plate 224, mainly plays a supporting and guiding role, which is used to limit the movement trajectory of the output end of the pneumatic rod 221. The second connecting rod 223 pushes the slider 226 to slide along the slide rail 225 away from the flexible roller 24, thereby driving the active pressure roller 26 to open. Conversely, when the pneumatic rod 221 retracts, the active pressure roller 26 rolls the side of the deposited layer.

[0106] Further, see attached document. Figure 4 , 5 The flexible roller 24 includes:

[0107] The first roller frame 241 is fixedly mounted on the horizontal plate of the positioning plate 224 at one end hinged to the first connecting rod 222, and the first roller frame 241 is parallel to the vertical plate of the positioning plate 224, serving as the overall support frame for the flexible roller 24.

[0108] Multiple positioning blocks 254 are spaced within the first roller frame 241 to provide installation and sliding guide space for the roller assembly;

[0109] Multiple roller groups are arrayed between the positioning blocks 254 to form segmented, independently movable roller pressing units;

[0110] An airbag 253 is disposed between the roller group and the first roller frame 241, serving as a flexible power source to drive the roller group to extend outward.

[0111] An air pump 25 is disposed on the top of the first roller frame 241. The output end of the air pump 25 is connected to the air bag 253 and is used to inflate or de-inflate the air bag 253.

[0112] Two first sliding rods 243 are slidably embedded in the upper and lower ends of the first roller frame 241, respectively, and are both located on the side close to the roller group, providing sliding support at the end of the first universal rod 242;

[0113] The first spring 244 is sleeved on the first slide rod 243;

[0114] The first universal joint 242 is disposed between the first slide rods 243, and the first universal joint 242 passes through each of the roller groups in sequence, so that each roller group can deflect independently;

[0115] The second spring 247 is disposed between the roller groups and sleeved on the first universal rod 242, for providing elastic spacing force between the roller groups and assisting the roller groups to reset when the airbag 253 is depressurized.

[0116] When the flexible roller 24 pre-compresses the deposition layer, the air pump 25 is activated to inflate the air bladder 253, causing the air bladder 253 to expand and push each roller group to gradually extend outward along the guide direction of the positioning block 254 until each roller group is tightly attached to the deposition layer. During the attachment process, since each roller group is independent of each other and connected by the first universal rod 242, each roller group can adaptively change its deflection angle according to the curvature of the deposition layer surface in its corresponding contact area. At the same time, the first slide rod 243 can slide along the first roller frame 241, and with the elastic interval action of the second spring 247, the entire array of rollers can conform to the macroscopic undulations and microscopic unevenness of the deposition layer surface.

[0117] The array-type, segmented, independently deflecting roller group design enables the flexible roller 24 to achieve a large area of ​​highly compliant contact with the side surface of the deposition layer. Even if the deposition layer surface has irregular curvature requirements or wall thickness variations, it can still maintain a uniform contact force, providing a reliable support for the opposite side of the active pressure roller 26.

[0118] It should be noted that the first universal joint 242 includes:

[0119] Two bearing seats 245 are respectively disposed on the first slide bar 243 on the side near the roller group;

[0120] Multiple deflection shafts 246 are hinged in sequence, and the deflection shafts 246 at both ends are hinged to the corresponding bearing seats 245. The deflection shafts 246 are rotatably embedded in the roller group.

[0121] When the flexible roller 24 is pushed outward to adhere to the surface of the deposited layer by the airbag 253, the contact reaction force of each roller group is different due to the possible local curvature changes on the surface of the deposited layer; at this time, the deflection shaft 246, which is hinged in sequence, allows each roller group to generate relative angular deflection in the vertical plane.

[0122] Furthermore, the roller assembly includes:

[0123] The roller seat 249 is slidably disposed between adjacent positioning blocks 254 and can reciprocate along the guiding direction of the positioning blocks 254 under the push of the airbag 253;

[0124] A deflector 250 is disposed on the side of the roller seat 249 away from the airbag 253, and is used to support the first pressure roller 248 and achieve angular deflection;

[0125] Ball seat 251 is disposed between the deflection seat 250 and the roller seat 249, serving as the ball joint fulcrum of the deflection seat 250;

[0126] Two push rods 252 are symmetrically and slidably embedded in the roller seat 249 and distributed on both sides of the ball seat 251. One end of the push rod 252 is movably connected to the deflection seat 250, and the other end is connected to the airbag 253, for transmitting the expansion thrust of the airbag 253 to the deflection seat 250.

[0127] The first pressure roller 248 is disposed within the deflection seat 250;

[0128] The deflection shaft 246 passes through the deflection seat 250 and the first pressure roller 248, and the first pressure roller 248 can rotate axially along the axis of the deflection shaft 246.

[0129] As the roller assembly approaches the surface of the deposition layer under the push of the airbag 253, the push rods 252 in the roller assembly extend outward synchronously under the pressure of the airbag 253. During the contact with the surface of the deposition layer, due to the possible local unevenness of the deposition layer surface, the resistance experienced by each push rod 252 is also different. Specifically, there is a large gap between the push rod 252 corresponding to the concave area and the surface of the deposition layer. In order to ensure that the first pressure roller 248 can fit tightly against the deposition layer, the push rod 252 on this side extends outward continuously under the continuous push of the airbag 253 until the first pressure roller 248 contacts the surface of the deposition layer. The push rod 252 corresponding to the convex area contacts the surface of the deposition layer earlier and experiences greater reverse resistance, and the extension amount of the push rod 252 is relatively small.

[0130] Under the action of the differential extension of push rod 252, a relative sliding displacement is generated between push rods 252, causing the deflection seat 250 to deflect with ball seat 251 as the fulcrum, thereby causing the axis of the first pressure roller 248 to tilt adaptively to match the local tilt angle of the deposited layer surface.

[0131] Each roller assembly can independently and passively adapt to local tilt changes on the surface of the deposited layer, so that the flexible roller 24 has high compliance while each first pressure roller 248 can maintain stable contact pressure with the surface of the deposited layer, thereby improving the adaptability to irregular deposited layer surfaces during the rolling process.

[0132] In this embodiment, refer to the appendix. Figure 3 The active pressure roller 26 includes:

[0133] The second roller frame 261 is disposed on the slider 226, and the second roller frame 261 is disposed parallel to the first roller frame 241;

[0134] Two second slide rods 262 are slidably embedded in the upper and lower ends of the second roller frame 261, respectively, and are both located on the side close to the flexible support roller 24;

[0135] The second universal joint 263 is disposed between the second slide rods 262;

[0136] The second pressure roller 264 is rotatably mounted on the second universal rod 263.

[0137] During the rolling process, since the surface of the deposited layer may have curvature changes, the second slide bar 262 can slide adaptively according to the contact reaction force. In conjunction with the flexible connection of the second universal rod 263, the second pressure roller 264 can adapt to the curvature changes of the deposited layer surface to a certain extent, avoiding local pressure concentration or indentation defects caused by excessive rigidity. This allows the active pressure roller 26 to maintain overall rigidity while also having limited conformal adaptability. It can apply stable and controllable active roller pressure to the deposited layer and avoid impact or off-center loading caused by uneven deposited layer surface.

[0138] After the device completes the side rolling of the deposited layer, the hammering unit 23 at the rear end of the strengthening component 2 then performs vertical hammering on the surface of the deposited layer. This further refines the internal grain structure of the deposited layer, while also helping to eliminate local stress concentrations that may occur during the rolling process and seal the surface micro-cracks left by the rolling process, thereby improving the density and surface quality of the deposited layer.

[0139] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hammer-strengthening device for arc additive manufacturing, characterized in that, include: A robotic arm (1) is mounted on one side of the workbench; An arc depositor (3) is disposed at the end of the robotic arm (1); A reinforcing component (2) is disposed on the circumferential outer side of the arc depositor (3); A wire feeding assembly (4) is disposed on the circumferential outer side of the arc depositor (3); The robotic arm (1) is configured as a movable frame that drives the arc depositor (3), the reinforcing component (2) and the wire feeding component (4) to move, and the reinforcing component (2) and the wire feeding component (4) are both linked to the arc depositor (3).

2. The hammer-strengthening device for arc additive manufacturing according to claim 1, characterized in that, The reinforcement component (2) includes: Positioning assembly (21) is disposed on the circumferential outer side of the arc depositor (3); A drive roller assembly (22) is disposed on the side of the adjustment assembly (21) away from the arc depositor (3), the drive roller assembly (22) including a fixed side and a sliding side disposed opposite to each other; A flexible support roller (24) is disposed on the fixed side of the drive roller assembly (22); An active pressure roller (26) is disposed on the sliding side of the drive roller assembly (22); A hammering unit (23) is located on the other side of the drive roller assembly (22).

3. The hammer-strengthening device for arc additive manufacturing according to claim 2, characterized in that, The adjustment component (21) includes: The first motor (211) is fixedly mounted on the outer wall of the arc depositor (3); The limiting block (215) is fixedly disposed on the outer wall of the arc depositor (3) and located below the first motor (211); A threaded rod (213) is disposed between the first motor (211) and the limiting block (215), and the threaded rod (213) is connected to the output end of the first motor (211); A slide (212) is sleeved on the threaded rod (213) and threadedly engaged with the threaded rod (213); A limiting plate (214) is disposed between the first motor (211) and the limiting block (215), and the limiting plate (214) is in contact with the slide (212).

4. The hammering strengthening device for arc additive manufacturing according to claim 3, characterized in that, The drive roller assembly (22) includes: Positioning plate (224), which is inverted T-shaped, is located on the side of the adjustment assembly (21) away from the arc depositor (3); A fixing block (227) is fixedly disposed between the vertical plate of the positioning plate (224) and the slide (212); A pneumatic rod (221) has its base hinged to the bottom of the fixed block (227); A slide rail (225) is provided at the other end of the horizontal plate of the positioning plate (224), and the slide rail (225) is parallel to the horizontal plate; A slider (226) is slidably disposed on the slide rail (225); The first connecting rod (222) has one end hinged to the output end of the pneumatic rod (221) and the other end hinged to one end of the horizontal plate of the positioning plate (224); The second link (223) is hinged at one end to the output end of the pneumatic rod (221) and at the other end to the slider (226).

5. The hammering strengthening device for arc additive manufacturing according to claim 4, characterized in that, The flexible support roller (24) includes: The first roller frame (241) is fixedly mounted on the horizontal plate of the positioning plate (224) at one end hinged to the first connecting rod (222), and the first roller frame (241) is parallel to the vertical plate of the positioning plate (224). Multiple positioning blocks (254) are spaced within the first roller frame (241); Multiple roller groups are arranged in an array between the positioning blocks (254); An airbag (253) is disposed between the roller group and the first roller frame (241); An air pump (25) is disposed on the top of the first roller frame (241), and the output end of the air pump (25) is connected to the air bag (253). Two first sliding rods (243) are respectively slidably embedded in the upper and lower ends of the first roller frame (241), and both are located on the side close to the roller group; The first spring (244) is sleeved on the first slide rod (243); The first universal joint (242) is disposed between the first slide bars (243), and the first universal joint (242) passes through each of the roller groups in sequence; The second spring (247) is disposed between the rollers and is sleeved on the first universal joint (242).

6. The hammering strengthening device for arc additive manufacturing according to claim 5, characterized in that, The first gimbal (242) includes: Two bearing seats (245) are respectively disposed on the first slide bar (243) on one side near the roller assembly; Multiple deflection shafts (246) are hinged in sequence, and the deflection shafts (246) at both ends are hinged to the corresponding bearings (245). The deflection shafts (246) are rotatably embedded in the roller group.

7. The hammering strengthening device for arc additive manufacturing according to claim 6, characterized in that, The roller assembly includes: Roller seat (249) is slidably disposed between adjacent positioning blocks (254); A deflector (250) is disposed on the side of the roller seat (249) away from the airbag (253); A ball seat (251) is disposed between the deflector seat (250) and the roller seat (249); Two push rods (252) are symmetrically and slidably embedded in the roller seat (249) and distributed on both sides of the ball seat (251). One end of the push rod (252) is movably connected to the deflection seat (250), and the other end is connected to the airbag (253). The first pressure roller (248) is disposed within the deflection seat (250); The deflection shaft (246) passes through the deflection seat (250) and the first pressure roller (248).

8. A hammer-strengthening device for arc additive manufacturing according to claim 5, characterized in that, The active pressure roller (26) includes: The second roller frame (261) is disposed on the slider (226), and the second roller frame (261) is disposed parallel to the first roller frame (241); Two second slide bars (262) are slidably embedded in the upper and lower ends of the second roller frame (261), respectively, and are both located on the side close to the flexible support roller (24); The second universal joint (263) is disposed between the second slide bars (262); The second pressure roller (264) is rotatably mounted on the second universal joint (263).

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