Apparatus and method for the production of large cylindrical additively manufactured components

Abstract

The application discloses a preparation device and method of a large-scale cylindrical additive component. The device comprises a workbench, a base plate, an additive manufacturing system, an ultrasonic impact system for applying ultrasonic impact to the inner and outer sides of the cylindrical additive component, a temperature collector, the ultrasonic impact system comprising inner and outer ultrasonic impactors, the inner and outer ultrasonic impactors being respectively provided with a three-dimensional motion device, and a computer control system connected with the temperature collector, the additive manufacturing system, the ultrasonic impact system and the three-dimensional motion device, the computer control system receiving surface temperature information of the cylindrical additive component, calculating a region to be subjected to ultrasonic impact, and sending an instruction to the three-dimensional motion device to control the inner and outer ultrasonic impactors to simultaneously perform ultrasonic impact on the region to be subjected to ultrasonic impact. The application makes the ultrasonic impact process of the large-scale cylindrical component more convenient and easier to operate, can homogenize the components, effectively eliminate stress, and improve the organization and performance of the whole component.

Description

Technical Field

[0001] This invention belongs to the field of rotary additive manufacturing, and specifically relates to an apparatus and method for preparing large cylindrical additive components. Background Technology

[0002] Arc additive manufacturing is an advanced digital technology that rapidly fabricates desired parts from the bottom up, based on an electric arc plasma and a CAD model designed according to the 3D solid form of the part. Compared to traditional processing methods, this technology has many advantages, including lower cost, higher flexibility, shorter production cycle, and the ability to produce parts with greater complexity. However, arc additive manufacturing involves a complex process characterized by localized melting, rapid solidification, and uneven and repeated heating-cooling cycles. This results in poor liquid flowability and repeated grain growth due to heating, leading to poor performance and microstructure of the formed component.

[0003] Research results show that ultrasonic impaction treatment can effectively optimize microstructure, forming a relatively uniform and isotropic microstructure, thereby improving the microstructure and properties of additively manufactured components. Currently, ultrasonic impaction is widely used and reported in the fabrication of small, simple parts, but the direction of ultrasonic impaction is singular, mostly acting perpendicularly to the deposited layer after the arc additive manufacturing process. However, specific devices for simultaneous ultrasonic impaction in the fabrication of closed components are extremely rare, especially for closed components with complex and varied shapes or high restraint conditions; currently, there is no complete ultrasonic impaction equipment. The commonly used method of horizontally following the welding torch only achieves the effect of surface vibration of the molten pool and surface stress transformation. The nanocrystalline regions obtained by vibration and pressure disappear after remelting and cannot be retained.

[0004] Furthermore, closed and complex components, such as cylindrical structures, greatly limit the application of synchronous ultrasonic impact, especially for internal ultrasonic impact. Traditional methods for manufacturing large cylindrical structures involve repeatedly bending and rolling rolled sheet metal. This inevitably results in uneven wall thickness, top wrinkles, and other defects. Post-processing must be performed as a whole, making localized post-processing inconvenient. The resulting cylindrical structures also exhibit high residual stress and poor microstructure and properties. Compared to arc additive manufacturing technology, traditional processes are more expensive, less flexible, and have longer production cycles.

[0005] Arc additive manufacturing, based on electric arc plasma, forms components through a localized molten pool. It can produce highly complex components, and the additive manufacturing process allows for dimensional adjustments and stress relief to optimize the performance of cylindrical structures. However, traditional arc additive manufacturing involves a complex process. Due to localized melting, rapid solidification, and uneven, repeated heating-cooling cycles, the liquid flow is poor, and grains grow repeatedly under heat. After component formation, the grain size is large, anisotropic, and the overall performance is poor. Therefore, ultrasonic impact treatment is required for grain refinement and isotropic treatment.

[0006] However, surveys show that ultrasonic impaction is currently widely used and reported in the fabrication of small, simple parts, and the direction of ultrasonic impaction is singular, mostly acting perpendicularly to the deposited layer after the arc additive manufacturing process. Specific devices for synchronous ultrasonic impaction in the fabrication of closed components are extremely rare, especially for closed components with complex and varied shapes and high restraint conditions; currently, there is no complete ultrasonic impaction equipment or three-dimensional motion device. The commonly used method of applying ultrasonic impaction horizontally behind the welding torch only achieves the effect of surface vibration of the molten pool and surface stress transformation. After remelting, the nanocrystalline regions obtained by vibration and pressure disappear and cannot be retained. Summary of the Invention

[0007] The purpose of this invention is to provide an apparatus and method for preparing large cylindrical additive components.

[0008] The technical solution for achieving the objective of this invention is as follows: a fabrication apparatus for a large cylindrical additive component, comprising a worktable, a substrate set on the worktable as the additive base; an additive manufacturing system for fabricating the large cylindrical additive component; an ultrasonic impact system for applying ultrasonic impact to the inner and outer sides of the cylindrical additive component; a temperature acquisition device for collecting temperature data on the outer surface of the cylindrical additive component; the ultrasonic impact system includes inner and outer ultrasonic impactors, each equipped with a three-dimensional motion device to achieve three-dimensional motion of the ultrasonic impactors; and a computer control system connected to the temperature acquisition device, the additive manufacturing system, the ultrasonic impact system, and the three-dimensional motion device. The computer control system receives surface temperature information of the cylindrical additive component, calculates the area to be ultrasonically impacted, and issues commands to the three-dimensional motion device to control the inner and outer ultrasonic impactors to simultaneously perform ultrasonic impact on the area to be ultrasonically impacted, thereby realizing the additive fabrication of the large cylindrical additive component.

[0009] Furthermore, the additive manufacturing system includes multiple sets of welding torches and a six-axis robot that matches the welding torches. The multiple sets of welding torches are evenly distributed circumferentially along the surface of the cylindrical additive component to be added, so as to achieve full coverage of the surface of the large cylindrical additive component and avoid interference. The ultrasonic impact system includes multiple sets of resonant ultrasonic impactors with the same number as the welding torches. Each set of resonant ultrasonic impactors includes an inner ultrasonic impactor and an outer ultrasonic impactor that work simultaneously.

[0010] Furthermore, the three-dimensional motion device for realizing the three-dimensional motion of the external ultrasonic impactor includes multiple vertical walking devices set on the worktable, multiple arc-shaped guide rail support platforms connected to the vertical walking devices and moving up and down along the vertical walking devices, arc-shaped guide rails on the multiple arc-shaped guide rail support platforms, motion sliders on the arc-shaped guide rails, and ultrasonic impactors on the motion sliders.

[0011] The ultrasonic impactor is movably mounted on the sliding block, and the ultrasonic impactor moves along the radial direction of the cylindrical additive component on the sliding block. The shape of the arc-shaped guide rail matches the cross-sectional shape of the large cylindrical additive component, and the arc-shaped guide rail is located on the outer periphery of the large cylindrical additive component.

[0012] Furthermore, the three-dimensional motion device for realizing the three-dimensional motion of the internal ultrasonic impactor includes a threaded rotary lifting track set on the worktable, a rotary lifting motion table provided with the threaded rotary lifting track, an internal ultrasonic impactor set on the rotary lifting motion table, and the ultrasonic impactor being radially movably set on the rotary lifting motion table along the cylindrical additive component.

[0013] Furthermore, the threaded rotary lifting track is mounted on the worktable via a coupling support, enabling the threaded rotary lifting track to rotate relative to the worktable.

[0014] Furthermore, the additive manufacturing system includes two sets of welding torches and a six-axis robot matched with the welding torches, and the ultrasonic impact system includes two sets of resonant ultrasonic impactors.

[0015] Furthermore, it also includes the power supply for welding torch I, ultrasonic impactor I, welding torch II, ultrasonic impactor II, ultrasonic impactor III, and ultrasonic impactor IV.

[0016] A method for additively producing large cylindrical additive components using the above-described apparatus includes the following steps:

[0017] Step (1): Plan the additive manufacturing path, generate the path file, and import it into the computer control system; plan the ultrasonic impactor motion path that matches the arc additive manufacturing process and import it into the computer control system.

[0018] Step (2): Mechanically grind the substrate, fix the substrate on the worktable, move the welding gun above the arc starting point, so that the welding gun is above the substrate and perpendicular to the substrate;

[0019] Step (3): Adjust the ultrasonic impact parameters;

[0020] Step (4): Ignite the electric arc, move the welding torch along the planned path, and stack the components layer by layer. At the same time, the temperature acquisition device monitors the temperature of the outer surface of the cylindrical additive building. Adjust the position of the impact head of the ultrasonic impactor to maximize the ultrasonic effect on the molten pool.

[0021] Step (5): Stack layer by layer until the additive large component is formed, move the electric arc additive device and ultrasonic impact device to a safe position, and turn off the electric arc additive device, temperature sensor controller, ultrasonic impact control device and ultrasonic power supply.

[0022] Furthermore, in step (4), "adjusting the position of the ultrasonic impactor's impact head to maximize the ultrasonic effect acting on the molten pool" specifically means:

[0023] In the computer control system, the desired ultrasonic amplitude is input, and the coordinate position of the temperature acquisition device is set as the origin, i.e., (0, 0, 0). The coordinate position of the center of the ultrasonic impactor head is (0, 70, 30). When welding has not started, the welding torch position is taken as the heat source position, and its coordinate position is determined as (X2, Y2, Z2). The heat source area is determined using the above coordinates, according to the formula... Calculate the magnitude of S, where A0 is the initial amplitude, f is the ultrasonic frequency, and v is the propagation speed of the ultrasonic wave in the steel; set the temporary coordinates as (X3, Y3, Z3), and use the formula... The temporary coordinate values ​​are solved, and the transformation value from (X2, Y2, Z2) to (X3, Y3, Z3) is obtained using |X2-X3|, |Y2-Y3|, and |Z2-Z3|, which is (X4, Y4, Z4). The coordinates of the ultrasonic impactor are moved according to the transformation value to the position (0±X4, 70±Y4, 30±Z4). The current position is checked to see if A(s) meets the requirements. If the check result meets the requirements, the welding robot is started. The ultrasonic impactor moves in the same direction as the welding torch under the control of the three-dimensional walking track, and the moving speed is the same as the welding speed. At the same time, the temperature acquisition device continuously determines the position of the heat source and adjusts the position of the ultrasonic impactor in real time to ensure the consistency of the ultrasonic impact effect of the molten pool throughout the process.

[0024] Furthermore, the ultrasonic impact load F is 10N, the ultrasonic impactor moving speed V1 is between 0.5m / min and 0.8m / min, matching the welding speed, the ultrasonic frequency f is in the range of 20KHz to 40KHz, and the power P is in the range of 800W to 1000W.

[0025] Compared with the prior art, the significant advantages of this invention are:

[0026] (1) The three-dimensional motion device acting on the cylindrical component in the device for preparing large cylindrical additive components based on synchronous ultrasonic impact applied to the double-sided sidewalls proposed in this invention is conducive to the promotion of ultrasonic impact method. The ultrasonic impact on the inner and outer sides can improve the effect of ultrasonic impact in the arc additive manufacturing process and avoid the phenomenon that the nanocrystalline region obtained by vibration and pressure after remelting will disappear and cannot be retained. The simultaneous bidirectional ultrasonic operation on the inner and outer sides of the sidewalls can produce a resonance effect, improve the effect of ultrasonic impact, and make the entire molten pool vibrate. The entire molten pool will form nanocrystalline. After remelting, the metal at the top will become the bottom molten pool area of ​​the next layer, thereby forming nanocrystalline. The nanocrystalline region is largely preserved, and the component performance is greatly improved.

[0027] (2) Based on the temperature acquisition device, the present invention obtains the optimal coordinates of the ultrasonic impact action at the distance from the highest temperature molten pool area, automatically moves to the optimal action point, and uses ultrasonic impact equipment to apply synchronous ultrasonic impact action on the inner and outer walls of the optimal action point, which effectively reduces the distance between the impact head and the molten pool, achieves the resonance effect, and makes the ultrasonic vibration act on the entire molten pool area, not just the surface of the molten pool. It performs stress relief treatment and composition homogenization treatment on the additive manufacturing large cylindrical structural parts, avoids the accumulation of residual tensile stress and composition segregation during the additive manufacturing process, maximizes the retention of the interlayer nanocrystalline grain layer, avoids remelting affecting the ultrasonic impact effect, makes the structural parts grain refined, significantly enhances anisotropy, and optimizes the overall performance of additive manufacturing parts.

[0028] (3) The process of the present invention is simple to operate, the process can be flexibly adjusted, the degree of automation is high, the controllability is good, it is easy to promote and can effectively improve the effect of ultrasonic impact treatment and optimize the forming quality of additive manufacturing structural parts.

[0029] (4) The ultrasonic impact of the present invention acts synchronously on the additive manufacturing process, and takes into account the motion trajectory and safety of the ultrasonic impact equipment when performing ultrasonic impact treatment on complex components. Attached Figure Description

[0030] Figure 1 This is a three-dimensional schematic diagram of the device of the present invention.

[0031] Figure 2 This is a top view of the device of the present invention.

[0032] Figure 3 for Figure 2 A sectional view along line AA.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Welding torch I power supply, 2-Ultrasonic impactor I power supply, 3-Welding torch II power supply, 4-Ultrasonic impactor II power supply, 5-Ultrasonic impactor III power supply, 6-Ultrasonic impactor IV power supply, 7-Vertical walking device, 8-Workbench, 9-Ultrasonic impactor I, 10-Welding torch I, 11-Ultrasonic impactor II, 12-Threaded rotary lifting track, 13-Ultrasonic impactor III, 14-Welding torch II, 15-Large cylindrical component, 16-Ultrasonic impactor IV, 17-Temperature sensor controller, 18-Computer control system, 19-Motion slider, 20-Temperature acquisition device, 21-Arc-shaped guide rail, 22-Arc-shaped guide rail support platform, 23-Connector, 24-Rotary lifting motion platform, 25-Coupling support. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings.

[0036] like Figure 1-3 As shown, a fabrication apparatus for a large cylindrical additive component includes a worktable 8, a substrate mounted on the worktable 8 as the additive manufacturing base, an additive manufacturing system for fabricating the large cylindrical additive component, an ultrasonic impact system for applying ultrasonic impacts to the inner and outer sides of the cylindrical additive component, a temperature acquisition device 20 for collecting temperature data on the outer surface of the cylindrical additive component, the ultrasonic impact system including inner and outer ultrasonic impactors, each equipped with a three-dimensional motion device to achieve three-dimensional motion of the ultrasonic impactors, and a computer control system connected to the temperature acquisition device 20, the additive manufacturing system, the ultrasonic impact system, and the three-dimensional motion device. The computer control system receives the surface temperature information of the cylindrical additive component, calculates the area to be ultrasonically impacted, and issues commands to the three-dimensional motion device to control the inner and outer ultrasonic impactors to simultaneously perform ultrasonic impacts on the area to be ultrasonically impacted, thereby realizing the additive manufacturing of the large cylindrical additive component.

[0037] The additive manufacturing system includes multiple sets of welding torches and a six-axis robot that matches the welding torches. The multiple sets of welding torches are evenly distributed around the circumference of the cylindrical additive component to be added, so as to achieve full coverage of the surface of the large cylindrical additive component and avoid interference. The ultrasonic impact system includes multiple sets of resonant ultrasonic impactors with the same number as the welding torches. Each set of resonant ultrasonic impactors includes an inner ultrasonic impactor and an outer ultrasonic impactor that work simultaneously.

[0038] The three-dimensional motion device for realizing the three-dimensional motion of the external ultrasonic impactor includes multiple vertical walking devices 7 set on the worktable 8, multiple arc-shaped guide rail support platforms 22 connected to the vertical walking devices 7 and moving up and down along the vertical walking devices 7, multiple arc-shaped guide rail support platforms 22 are provided with arc-shaped guide rails 21, arc-shaped guide rails 21 are provided with motion sliders 19, and ultrasonic impactors are provided on motion sliders 19.

[0039] The ultrasonic impactor is movably mounted on the moving slider 19, and the ultrasonic impactor moves along the radial direction of the cylindrical additive component on the moving slider 19. The shape of the arc-shaped guide rail 21 matches the cross-sectional shape of the large cylindrical additive component, and the arc-shaped guide rail 21 is located on the outer periphery of the large cylindrical additive component.

[0040] The three-dimensional motion device for realizing the three-dimensional motion of the internal ultrasonic impactor includes a threaded rotary lifting track 12 set on the worktable 8, a rotary lifting motion table 24 provided on the threaded rotary lifting track 12, an internal ultrasonic impactor set on the rotary lifting motion table 24, and the ultrasonic impactor is radially movably set on the rotary lifting motion table 24 along the cylindrical additive component.

[0041] The threaded rotary lifting track 12 is mounted on the worktable via a coupling support 25, enabling the threaded rotary lifting track 12 to rotate relative to the worktable.

[0042] The additive manufacturing system includes two sets of welding torches and a six-axis robot matched with the welding torches; the ultrasonic impact system includes two sets of resonant ultrasonic impactors.

[0043] It also includes power supplies for welding torch I (1), ultrasonic impactor I (2), welding torch II (3), ultrasonic impactor II (4), ultrasonic impactor III (5), and ultrasonic impactor IV (6).

[0044] To achieve the experimental objective, the present invention also provides a method for arc additive manufacturing of cylindrical structural components using the above-described apparatus, the specific steps of which are as follows:

[0045] Step 1: Based on the 3D model of the large component, draw the overall 3D model of the large component. According to the predetermined 3D model, plan the optimal additive manufacturing path, generate the path file, and import it into the robot control system to control the arc additive manufacturing process.

[0046] Step 2: Plan a three-dimensional motion path that matches the arc additive manufacturing process, import it into a computer control device, and control the ultrasonic impact process;

[0047] Step 3: Mechanically grind the substrate and fix it inside the three-dimensional motion device. Move the welding torch above the arc starting point, and position the welding torch above and perpendicular to the substrate;

[0048] Step 4: Start the welding robot, ultrasonic impact power supply, three-dimensional motion device and temperature sensing device, and move synchronously with the additive manufacturing system. Adjust the ultrasonic impact parameters: ultrasonic impact load is F, ultrasonic impactor moving speed is V1, ultrasonic vibration frequency is f, and power is P.

[0049] Step 5: Ignite the electric arc, move the welding torch along the preset path to deposit components layer by layer, and simultaneously monitor the highest temperature area using a temperature sensor. Adjust the position according to the following formula to maximize the ultrasonic effect acting on the molten pool.

[0050]

[0051]

[0052] A0 is the initial amplitude, f is the ultrasonic frequency, v is the propagation speed of ultrasonic waves in steel, and S is the distance between the two points, which is the distance between the heat source area and the ultrasonic impactor.

[0053] In the computer control system, the desired ultrasonic amplitude is input. The program sets the coordinate position of the temperature strain gauge as the origin, i.e., (0, 0, 0), and fixes the center position coordinates of the ultrasonic impactor head as (0, 70, 30). When welding has not started, the welding torch position is taken as the heat source position, and the coordinate position is determined as (X2, Y2, Z2). The approximate heat source area is determined using these coordinates, according to the formula... To find the size of s, we set the temporary coordinates as (X3, Y3, Z3) and use the formula... The computer solves for temporary coordinate values. Using |X2-X3|, |Y2-Y3|, and |Z2-Z3|, the transformation value from (X2,Y2,Z2) to (X3,Y3,Z3) is obtained as (X4,Y4,Z4). The coordinates of the ultrasonic impactor are moved according to the transformation value to the position (0±X4,70±Y4,30±Z4). The current position is checked to see if A(s) meets the requirements. If the check result is satisfactory, the welding robot is started. The ultrasonic impactor moves in the same direction as the welding torch under the control of the three-dimensional walking track, and the moving speed is the same as the welding speed. Simultaneously, the temperature sensor continuously determines the heat source position, allowing for sensitive adjustment of the ultrasonic impactor's position to address collapse issues during the welding process and ensuring the consistency of the ultrasonic impact effect on the molten pool throughout the entire process.

[0054] The general rule is that when the height of the component is insufficient (<70mm), the ultrasonic impact device gradually moves in an arc shape, from following the welding torch horizontally to following the welding torch vertically below it. That is, when the height of the large cylindrical component increases to the critical height H at which ultrasonic impact can be applied, it is 70mm.

[0055] Step 6: Stack layer by layer until the additive large component is formed. Move the arc additive manufacturing device and ultrasonic impact device to a safe position, and turn off the arc additive manufacturing device, temperature sensor controller, ultrasonic impact control device and ultrasonic power supply.

[0056] Example

[0057] After installation and debugging of the overall equipment, the substrate surface is mechanically polished. The substrate is then fixed above the three-dimensional walking device, centered in the center. The ultrasonic impact control device is adjusted to set the ultrasonic vibration frequency to 40kHz, power to 1000W, amplitude to 100μm, load to 10N, and moving speed to 0.5m / min. The welding torch is moved directly above the arc ignition point and perpendicular to the substrate. The welding torch type is a MIG welding torch, with an arc current of 180A and an arc voltage of 20V. 1.00mm 316L stainless steel welding wire is selected. The height of the welding torch from the substrate is 15mm, and the shielding gas is a mixture of 98% argon and 2% oxygen at a flow rate of 20L / min. At the start of the additive manufacturing process, the ultrasonic impact device can be activated, the ultrasonic impact power supply can be turned on, and the computer control system and temperature sensing device can be started to control the three-dimensional motion device to move synchronously in the additive manufacturing process. The ultrasonic impact is applied to the inner and outer walls of the cylindrical component at a distance from the molten pool to reduce harmful stress in the component and improve the uniformity of composition. Then the deposition of the deposition channel is repeated until the additive manufacturing process of the component is completed.

Claims

1. A fabrication apparatus for a large cylindrical additive manufacturing component, characterized in that, The system includes a workbench (8), a substrate set on the workbench (8) as the basis for additive manufacturing; an additive manufacturing system for additive manufacturing of large cylindrical additive components; an ultrasonic impact system for applying ultrasonic impact to the inner and outer sides of the cylindrical additive components; a temperature acquisition device (20) for collecting temperature data on the outer surface of the cylindrical additive components; the ultrasonic impact system includes inner and outer ultrasonic impactors, both of which are equipped with three-dimensional motion devices to realize the three-dimensional motion of the ultrasonic impactors; and a computer control system, which is connected to the temperature acquisition device (20), the additive manufacturing system, the ultrasonic impact system and the three-dimensional motion device. The computer control system receives the surface temperature information of the cylindrical additive components, calculates the area to be ultrasonically impacted, and issues instructions to the three-dimensional motion device to control the inner and outer ultrasonic impactors to simultaneously perform ultrasonic impact on the area to be ultrasonically impacted, thereby realizing the additive manufacturing of large cylindrical additive components.

2. The apparatus according to claim 1, characterized in that, The additive manufacturing system includes multiple sets of welding torches and a six-axis robot that matches the welding torches. The multiple sets of welding torches are evenly distributed around the circumference of the cylindrical additive component to be added, so as to achieve full coverage of the surface of the large cylindrical additive component and avoid interference. The ultrasonic impact system includes multiple sets of resonant ultrasonic impactors with the same number as the welding torches. Each set of resonant ultrasonic impactors includes an inner ultrasonic impactor and an outer ultrasonic impactor that work simultaneously.

3. The apparatus according to claim 2, characterized in that, The three-dimensional motion device for realizing the three-dimensional motion of the external ultrasonic impactor includes multiple vertical walking devices (7) set on the worktable (8), multiple arc-shaped guide rail support platforms (22) connected to the vertical walking devices (7) and moving up and down along the vertical walking devices (7), multiple arc-shaped guide rail support platforms (22) are provided with arc-shaped guide rails (21), the arc-shaped guide rails (21) are provided with motion sliders (19), and the external ultrasonic impactor is provided on the motion sliders (19); The external ultrasonic impactor is movably mounted on the moving slider (19), and the external ultrasonic impactor moves along the radial direction of the cylindrical additive component on the moving slider (19). The shape of the arc-shaped guide rail (21) matches the cross-sectional shape of the large cylindrical additive component, and the arc-shaped guide rail (21) is set on the outer periphery of the large cylindrical additive component.

4. The apparatus according to claim 3, characterized in that, The three-dimensional motion device for realizing the three-dimensional motion of the internal ultrasonic impactor includes a threaded rotary lifting track (12) set on the worktable (8), the threaded rotary lifting track (12) is equipped with a rotary lifting motion table (24), the internal ultrasonic impactor is set on the rotary lifting motion table (24), and the internal ultrasonic impactor is radially movable on the rotary lifting motion table (24) along the cylindrical additive component.

5. The apparatus according to claim 4, characterized in that, The threaded rotary lifting track (12) is set on the worktable through the coupling support (25) to realize the rotation of the threaded rotary lifting track (12) relative to the worktable.

6. The apparatus according to claim 5, characterized in that, The additive manufacturing system includes two sets of welding torches and a six-axis robot that matches the welding torches, while the ultrasonic impact system includes two sets of resonant ultrasonic impactors.

7. The apparatus according to claim 6, characterized in that, It also includes the power supply for welding torch I (1), the power supply for ultrasonic shocker I (2), the power supply for welding torch II (3), the power supply for ultrasonic shocker II (4), the power supply for ultrasonic shocker III (5), and the power supply for ultrasonic shocker IV (6).

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