Electromagnetic induction auxiliary heating device for electric arc additive manufacturing

Abstract

The invention relates to the technical field of additive manufacturing, in particular to an electromagnetic induction auxiliary heating device for electric arc additive manufacturing, a three-axis adjusting component, a clamping component and a heating component are arranged in the device, and the three-axis adjusting component comprises a y-axis adjusting assembly, a z-axis adjusting assembly and an x-axis adjusting assembly; the fixed end of the y-axis adjusting assembly is installed on a workbench of a machined part, and the adjusting end of the y-axis adjusting assembly is fixedly connected with the fixed end of the z-axis adjusting assembly. The adjusting end of the z-axis adjusting assembly is fixedly connected with the fixed end of the x-axis adjusting assembly; the clamping component comprises a fixing assembly and a clamping jaw assembly. The fixing end of the fixing assembly is fixedly connected with the fixing end of the x-axis adjusting assembly. The fixed end of the clamping jaw assembly is installed on the fixing assembly in an angle-adjustable mode. The heating component comprises a heating coil, and the fixed end of the heating coil is installed at the clamping end of the clamping jaw assembly. Thus, the position and the angle of the heating coil are adjusted through the three-axis adjusting component and the clamping component, the induced magnetic field is dynamically matched with the surface shape of a part, and therefore the quality of a metal component is improved.

Description

Technical Field

[0001] This invention relates to the field of additive manufacturing technology, and in particular to an electromagnetic induction-assisted heating device for arc additive manufacturing. Background Technology

[0002] Wafer Additive Manufacturing (WAAM), a metal additive manufacturing technology, utilizes a high-energy electric arc as a heat source to precisely melt a fed metal wire. The molten metal is then deposited layer by layer onto a substrate or a previously deposited metal layer, following a pre-defined path to build up the desired metal component. Compared to other metal additive manufacturing technologies such as laser and plasma beam additive manufacturing, its advantages lie in its relatively simple equipment, lower manufacturing cost, and higher material utilization. However, the high heat output generated by the electric arc and the periodic rapid heating and cooling of the metal during manufacturing can lead to residual thermal stress and thermal deformation within the metal component. Furthermore, coarse columnar grains can easily appear at the microscopic level, affecting the geometric accuracy and mechanical properties of the metal component.

[0003] To address the aforementioned thermal deformation issues, existing technologies primarily rely on pre-weld prevention, post-weld straightening, and flame straightening to reduce the deformation of metal components. However, pre-weld prevention and post-weld straightening cannot completely suppress thermal deformation during the forming process of metal components, and can only limit the deformation range to a certain extent. Flame straightening can handle certain deformations, but it also has problems such as uneven heating and environmental pollution. Regarding the aforementioned problem of coarse columnar grains, existing composite rolling technology can break up coarse columnar grain structures through the mechanical action of the rolls. However, since the rolls are in direct contact with the substrate, impurities such as oxide scale and lubricant residue are easily introduced during the rolling process, contaminating the surface of the metal components and damaging their dimensional accuracy and surface quality.

[0004] To solve the aforementioned technical problems, Chinese invention patent application number CN202211464195.6 discloses a fabrication apparatus and method for arc additive manufacturing, relating to the field of additive manufacturing technology. The fabrication apparatus includes: an arc heat source device, an electromagnetic induction heating device, a heating control device, and a metal substrate; both the arc heat source device and the electromagnetic induction heating device are disposed above the metal substrate; a target metal wire is placed inside the arc heat source device; the heating control device is connected to both the arc heat source device and the electromagnetic induction heating device; the heating control device is used to: control the arc heat source device and the electromagnetic induction heating device to move simultaneously relative to the metal substrate along a set route; along the moving direction, the arc heat source device is located in front of the electromagnetic induction heating device; during the movement, the arc heat source device heats and melts the target metal wire within a first set temperature range, and the melted target metal wire is deposited on the metal substrate to obtain a processed workpiece; when the electromagnetic induction heating device... When the heating device moves above the workpiece being processed, the temperature of the workpiece is within a second set temperature range. At this time, the electromagnetic induction heating device is controlled to heat the workpiece to a third set temperature range to obtain the desired shape of the arc additive manufacturing. The set path is determined according to the desired shape. The maximum value of the second set temperature range is less than the minimum value of the third set temperature range, and the maximum value of the third set temperature range is less than the minimum value of the first set temperature range. The electromagnetic induction heating device includes a longitudinal magnetic field heating coil and a transverse magnetic field heating coil. The end of the longitudinal magnetic field heating coil is connected to the end of the transverse magnetic field heating coil. The magnetic field generated by the longitudinal magnetic field heating coil is perpendicular to the metal substrate. The magnetic field generated by the transverse magnetic field heating coil is parallel to the metal substrate.

[0005] However, the above-mentioned prior art has the following technical problems: The above-mentioned electric arc additive manufacturing preparation device effectively reduces the residual stress and thermal deformation of the processed metal components by performing electromagnetic induction heat treatment on the workpiece after electric arc additive manufacturing, and suppresses the formation of coarse columnar grains. However, the direction of the magnetic field generated by the electromagnetic induction heating device of the device is limited to being perpendicular or parallel to the metal substrate. In practical applications, when the surface of the part to be repaired or manufactured is curved, for example, when repairing a large wind turbine gear by electric arc additive manufacturing, the magnetic field perpendicular or parallel to the surface of the part substrate is difficult to heat the surface of the part substrate evenly, resulting in local overheating or underheating of the surface of the part after electric arc additive manufacturing, which reduces the overall performance of the part and leads to a reduction in the quality of the finally repaired or manufactured metal components. Summary of the Invention

[0006] In view of this, it is necessary to provide an electromagnetic induction-assisted heating device for arc additive manufacturing, which can adjust the direction of the magnetic field along the curved surface of the part substrate, thereby improving the uniformity of heating the part substrate surface, improving the overall performance of the part, and thus improving the quality of the final repaired or manufactured metal component.

[0007] This invention provides an electromagnetic induction-assisted heating device for arc additive manufacturing, comprising a three-axis adjustment component, a clamping component, and a heating component. The three-axis adjustment component includes a y-axis adjustment assembly, a z-axis adjustment assembly, and an x-axis adjustment assembly. The fixed end of the y-axis adjustment assembly is mounted on the worktable of the workpiece, and its adjustment end is fixedly connected to the fixed end of the z-axis adjustment assembly to adjust the position of the z-axis adjustment assembly on the y-axis. The adjustment end of the z-axis adjustment assembly is fixedly connected to the fixed end of the x-axis adjustment assembly to adjust the position of the x-axis adjustment assembly on the z-axis. The clamping component includes a fixing component and a jaw assembly. The fixed end of the fixing component is fixedly connected to the fixed end of the x-axis adjustment assembly to adjust the position of the fixing component on the x-axis. The fixed end of the jaw assembly is angle-adjustably mounted on the fixing component. The heating component includes a heating coil, and the fixed end of the heating coil is mounted on the clamping end of the jaw assembly to adjust the angle between the heating end of the heating coil and the fixing component.

[0008] Preferably, the y-axis adjustment assembly includes a first fixed frame and two identical first adjustment groups. The first fixed frame is horizontally mounted on the worktable for processing parts. The two first adjustment groups are symmetrically mounted on the top surface of the first fixed frame about the y-axis. Each first adjustment group includes two first slide frames, a first adjustment rod, a first drive motor, two first limit rods, and a first slide. The two first slide frames are symmetrically mounted on the first fixed frame about the x-axis. The two ends of the first adjustment rod are rotatably mounted on the two first slide frames. The fixed end of the first drive motor is fixedly mounted on one of the first slide frames, and the drive end is drivenly connected to the first adjustment rod to drive the first adjustment rod to rotate. The two ends of the two first limit rods are fixedly connected to the two first slide frames, and the two first limit rods are symmetrically arranged on both sides of the first adjustment rod. The two sides of the first slide are slidably connected to the two first limit rods, and the middle part is drivenly connected to the first adjustment rod to slide along the y-axis as the first adjustment rod rotates.

[0009] Preferably, the z-axis adjustment assembly includes a second fixed frame and two identical second adjustment groups. The second fixed frame is arranged horizontally, and its bottom ends are respectively fixedly connected to the top surfaces of the first slides of the two first adjustment groups. The two second adjustment groups are symmetrically installed on the sides of the second fixed frame about the z-axis. Each second adjustment group includes an adjustment frame, two second slide frames, a second adjustment rod, a second drive motor, two second limit rods, and a second slide. The adjustment frame is fixedly installed vertically on the sides of the second fixed frame, and the two second slide frames are symmetrically installed about the x-axis. The second adjusting rod is rotatably mounted on two second slide frames at both ends. The fixed end of the second drive motor is fixedly mounted on one of the second slide frames, and the drive end is drivenly connected to the second adjusting rod to drive the second adjusting rod to rotate. The two ends of the two second limiting rods are fixedly connected to the two second slide frames respectively, and the two second limiting rods are symmetrically arranged on both sides of the second adjusting rod. The two sides of the second slide are slidably connected to the two second limiting rods respectively, and the middle part is drivenly connected to the second adjusting rod to slide along the z-axis direction as the second adjusting rod rotates.

[0010] Preferably, the x-axis adjustment assembly includes a third fixed frame, two third slide frames, a third adjusting rod, a third drive motor, two third limiting rods, and a third slide. The third fixed frame is arranged horizontally, and its two ends are fixedly connected to the top surfaces of the second slides of the two second adjustment groups, respectively. The two third slide frames are symmetrically installed on the top surfaces of the third fixed frame about the y-axis. The two ends of the third adjusting rod are rotatably installed on the two third slide frames, respectively. The fixed end of the third drive motor is fixedly installed on one of the third slide frames, and the driving end is drivenly connected to the third adjusting rod to drive the third adjusting rod to rotate. The two ends of the two third limiting rods are fixedly connected to the two third slide frames, and the two third limiting rods are symmetrically arranged on both sides of the third adjusting rod. The two sides of the third slide are slidably connected to the two third limiting rods, and the middle part is drivenly connected to the third adjusting rod to slide in the x-axis direction as the third adjusting rod rotates.

[0011] Preferably, the first adjusting rod, the second adjusting rod, and the third adjusting rod are all lead screws, and the first slide and the first adjusting rod, the second slide and the second adjusting rod, and the third slide and the third adjusting rod are all threaded connections, so that each slide can slide as the corresponding adjusting rod rotates.

[0012] Preferably, the fixing assembly includes a fixing housing and a support plate, the bottom surface of the fixing housing is fixedly connected to the top surface of the third slide, and the support plate is installed vertically inside the fixing housing.

[0013] Preferably, arc-shaped guide grooves are formed on the inner side of the first side of the fixed housing and the first side of the support plate; the claw assembly includes a fourth drive motor, a fourth adjusting rod, and two clamping groups with the same structure. The fixed end of the fourth drive motor is fixedly installed on the outer side of the first side of the fixed housing; one end of the fourth adjusting rod is rotatably connected to the second side of the fixed housing, and the other end is drivenly connected to the driving end of the fourth drive motor to rotate under the drive of the fourth drive motor; a driving protrusion is provided on the fourth adjusting rod along its length direction; the two clamping groups are respectively installed on the inner side of the first side of the fixed housing and the first side of the support plate. Each clamping group includes a clamping platform, a first clamping rod, a guide bearing, a second clamping rod, and a claw. The clamping platform is rotatably installed on the fixed housing or the support plate, and a clamping groove is formed on the clamping platform; The first clamping rod has a drive ring at its first end, which is fitted onto the fourth adjusting rod. The drive ring has a drive groove to engage with a drive protrusion, allowing the first clamping rod to slide on the fourth adjusting rod and rotate around the drive ring as the fourth adjusting rod rotates. The outer edge of the guide bearing is slidably mounted in the arc-shaped guide groove, and its inner edge is fixedly connected to the inner side of the second end of the first clamping rod, so that the second end of the first clamping rod rotates along the arc-shaped guide groove under the drive of the fourth adjusting rod. The first end of the second clamping rod is rotatably mounted on the outer side of the second end of the first clamping rod, and the second end is slidably mounted in the clamping groove, so that the angle between the second clamping rod and the fixed housing changes with the rotation of the first clamping rod. The gripper is fixedly mounted on the second end of the second clamping rod for clamping the heating coil.

[0014] Preferably, the clamping component further includes an adjustment assembly, which comprises three identical adjustment groups and an adjustment handle. The three adjustment groups are all installed in the fixed housing and are located at the three corners of the side of the fixed housing. Each adjustment group includes a fifth adjustment rod, a fifth adjustment platform, and a synchronous pulley. The two ends of the fifth adjustment rod are rotatably connected to the two sides of the fixed housing. The fifth adjustment platform is fixedly installed on the support plate and threadedly connected to the fifth adjustment rod, so that it moves along the length of the fifth adjustment rod as the fifth adjustment rod rotates, thereby driving the support plate to move. The inner edge of the synchronous pulley is fixedly connected to the fifth adjustment rod, and the outer edges of the synchronous pulleys of the three adjustment groups are connected by a synchronous belt drive, so that the three synchronous pulleys rotate synchronously, thereby driving the fifth adjustment rods of the three adjustment groups to rotate synchronously. The adjustment handle is installed on the outside of the fixed housing and extends into the fixed housing, fixedly connected to the fifth adjustment rod of one of the adjustment groups, for driving the fifth adjustment rod of the corresponding adjustment group to rotate via the adjustment handle.

[0015] Preferably, the heating component further includes an induction heating component and a cooling component. The induction heating component is electrically connected to the heating coil so that energizing the heating coil causes it to generate an induced magnetic field. The heating coil is a hollow tube. The cooling component includes a water pump and a cooling water tank. The input end of the water pump is connected to the output end of the cooling water tank, and the output end is connected to the first end of the heating coil to deliver cooling water into the heating coil to reduce its temperature. The second end of the heating coil is connected to the input end of the cooling water tank to deliver the heat-absorbing cooling water to the cooling water tank.

[0016] Preferably, the heating coil is racetrack-shaped so that it can generate a uniform magnetic field, thereby improving the uniformity of heating the surface of the part substrate by the heating coil.

[0017] The aforementioned electromagnetic induction-assisted heating device for arc additive manufacturing includes a three-axis adjustment component, a clamping component, and a heating component. The three-axis adjustment component comprises a Y-axis adjustment assembly, a Z-axis adjustment assembly, and an X-axis adjustment assembly. The fixed end of the Y-axis adjustment assembly is mounted on the worktable of the workpiece, and its adjustment end is fixedly connected to the fixed end of the Z-axis adjustment assembly, allowing adjustment of the Z-axis adjustment assembly's position on the Y-axis. The adjustment end of the Z-axis adjustment assembly is fixedly connected to the fixed end of the X-axis adjustment assembly, allowing adjustment of the X-axis adjustment assembly's position on the Z-axis. The clamping component includes a fixing assembly and a jaw assembly. The fixed end of the fixing assembly is fixedly connected to the fixed end of the X-axis adjustment assembly, allowing adjustment of the fixing assembly's position on the X-axis. The jaw assembly... The fixed end of the component is adjustablely mounted on the fixing assembly; the heating component includes a heating coil, the fixed end of which is mounted on the clamping end of the jaw assembly, so that the angle between the heating end of the heating coil and the fixing assembly can be adjusted by the jaw assembly; thus, the heating coil is translated and positioned in three-dimensional space by the three-axis adjustment component, and the angle between the heating coil and the fixing assembly can be adjusted by the jaw assembly, so that the spatial position of the heating coil relative to the surface of the component substrate can be flexibly and accurately adjusted; thereby, the direction of the induced magnetic field generated by the heating coil can be dynamically adapted to the shape of the surface of the component substrate, ensuring that the induced magnetic field can act uniformly on the surface of the component substrate, so as to improve the uniformity of heating the surface of the component substrate, thereby improving the quality of the final repaired or manufactured metal component. Attached Figure Description

[0018] Figure 1 This is a perspective view of the electromagnetic induction-assisted heating device for arc additive manufacturing according to this application.

[0019] Figure 2 This is a top view of the electromagnetic induction-assisted heating device for arc additive manufacturing of this application when the heating coil is not clamped.

[0020] Figure 3 This is a perspective view of the three-axis adjustment component of this application.

[0021] Figure 4 This is a side view of the triaxial adjustment component of this application.

[0022] Figure 5 This is a front view of the three-axis adjustment component of this application.

[0023] Figure 6 This is a perspective view of the clamping component of this application.

[0024] Figure 7 This is a perspective view of the clamping component of this application from another angle.

[0025] Figure 8 This is a perspective view of the clamping component of this application after a portion has been removed.

[0026] Figure 9 This application is Figure 8 A magnified view of a portion of region A in the middle.

[0027] Figure 10 This is a perspective view of the first clamping rod of this application.

[0028] Figure 11 This is a perspective view of the clamping component of this application after a portion has been removed.

[0029] Figure 12 This is a schematic diagram of the electromagnetic induction-assisted heating device for arc additive manufacturing according to this application.

[0030] The diagram shows: an electromagnetic induction auxiliary heating device 10 for arc additive manufacturing, a three-axis adjustment component 20, a Y-axis adjustment assembly 21, a first fixed frame 211, a first adjustment group 212, a first slide table 2121, a first adjustment rod 2122, a first drive motor 2123, a first limiting rod 2124, a first slide table 2125, a Z-axis adjustment assembly 22, a second fixed frame 221, a second adjustment group 222, an adjustment frame 2221, a second slide table 2222, a second adjustment rod 2223, a second drive motor 2224, a second limiting rod 2225, a second slide table 2226, an X-axis adjustment assembly 23, a third fixed frame 231, a third slide table 232, a third adjustment rod 233, a third drive motor 234, and a third limiting rod 235. The components include: a third slide 236, a clamping component 30, a fixing assembly 31, a fixing housing 311, a support plate 312, an arc-shaped guide groove 313, a claw assembly 32, a fourth drive motor 321, a fourth adjusting rod 322, a drive protrusion 323, a clamping group 324, a clamping platform 3241, a first clamping rod 3242, a guide bearing 3243, a second clamping rod 3244, a claw 3245, a drive ring 3246, a drive groove 3247, an adjusting assembly 33, an adjusting group 331, a fifth adjusting rod 3311, a fifth adjusting platform 3312, a synchronous pulley 3313, a synchronous belt 3314, an adjusting handle 332, a heating component 40, a heating coil 41, an induction heating assembly 42, a cooling assembly 43, a water pump 431, and a cooling water tank 432. Detailed Implementation

[0031] The technical solutions and effects of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Please refer to Figure 1 and Figure 2This invention provides an electromagnetic induction-assisted heating device 10 for arc additive manufacturing, comprising a three-axis adjustment component 20, a clamping component 30, and a heating component 40. The three-axis adjustment component 20 includes a y-axis adjustment assembly 21, a z-axis adjustment assembly 22, and an x-axis adjustment assembly 23. The fixed end of the y-axis adjustment assembly 21 is mounted on the worktable of the workpiece, and its adjustment end is fixedly connected to the fixed end of the z-axis adjustment assembly 22, so as to adjust the position of the z-axis adjustment assembly 22 on the y-axis. The adjustment end of the z-axis adjustment assembly 22 is fixedly connected to the fixed end of the x-axis adjustment assembly 23, so as to adjust the position of the x-axis adjustment assembly 23 on the z-axis. The clamping component 30 includes a fixing component 31 and a jaw assembly 32, and the fixed end of the fixing component 31 is fixedly connected to the fixed end of the x-axis adjustment assembly 23, so as to adjust the position of the x-axis adjustment assembly 23 on the z-axis. The position of component 31 on the x-axis; the fixed end of the jaw assembly 32 is adjustablely mounted on the fixed assembly 31; the heating component 40 includes a heating coil 41, the fixed end of which is mounted on the clamping end of the jaw assembly 32, so that the angle between the heating end of the heating coil 41 and the fixed assembly 31 can be adjusted by the jaw assembly 32; thus, the heating coil 41 is translated and positioned in three-dimensional space by the three-axis adjustment component 20, and the angle of the heating coil 41 is adjusted by the clamping component 30, so that the spatial position of the heating coil 41 relative to the surface of the part substrate can be flexibly and accurately adjusted; thereby, the direction of the induced magnetic field generated by the heating coil 41 can be dynamically adapted to the shape of the surface of the part substrate, ensuring that the induced magnetic field can act uniformly on the surface of the part substrate, so as to improve the uniformity of heating the surface of the part substrate, thereby improving the quality of the final repaired or manufactured metal component.

[0033] In this embodiment, the directions of the x-axis, y-axis, and z-axis are as follows: Figure 1 As shown on the coordinate axes.

[0034] Please refer to Figure 3Furthermore, the y-axis adjustment assembly 21 includes a first fixed frame 211 and two identical first adjustment groups 212. The first fixed frame 211 is horizontally mounted on the worktable for processing parts. The two first adjustment groups 212 are symmetrically mounted on the top surface of the first fixed frame 211 about the y-axis. Each first adjustment group 212 includes two first slide frames 2121, a first adjustment rod 2122, a first drive motor 2123, two first limit rods 2124, and a first slide 2125. The two first slide frames 2121 are symmetrically mounted on the first fixed frame 211 about the x-axis. The two ends of the first adjustment rod 2122 are rotatably mounted on the two first slide frames 2121 respectively. The fixed end of the first drive motor 2123 is fixedly mounted on one of the first slide frames 2121, and the driving end drives the first adjustment rod 2122. The first slide 2125 is dynamically connected to the first adjustment rod 2122 via the first drive motor 2123. Both ends of the two first limiting rods 2124 are fixedly connected to the two first slide brackets 2121, and the two first limiting rods 2124 are symmetrically arranged on both sides of the first adjustment rod 2122. The two sides of the first slide 2125 are slidably connected to the two first limiting rods 2124, and the middle is drivenly connected to the first adjustment rod 2122, so that it slides along the y-axis as the first adjustment rod 2122 rotates. Specifically, by setting two first adjustment groups 212, the z-axis adjustment assembly 22 mounted on the top surface of the first slide 2125 in the first adjustment group 212 can move smoothly, avoiding jamming or offset caused by unilateral force. The sliding direction of the first slide 2125 is limited by the two first limiting rods 2124 to improve the positioning accuracy of the first slide 2125.

[0035] Please refer to Figure 4 and Figure 5Furthermore, the z-axis adjustment assembly 22 includes a second fixed frame 221 and two identical second adjustment groups 222. The second fixed frame 221 is arranged horizontally, and its bottom ends are fixedly connected to the top surfaces of the first slides 2125 of the two first adjustment groups 212 respectively. The two second adjustment groups 222 are symmetrically installed on the sides of the second fixed frame 221 about the z-axis. Each second adjustment group 222 includes an adjustment frame 2221, two second slide frames 2222, a second adjustment rod 2223, a second drive motor 2224, two second limit rods 2225, and a second slide 2226. The adjustment frame 2221 is fixedly installed on the sides of the second fixed frame 221 vertically, and the two second slide frames 2222 are symmetrically installed on the adjustment frame 2221 about the x-axis. The two ends of the second adjustment rod 2223 are rotatably installed on the two second slide frames 2222 respectively. The fixed end is fixedly installed on one of the second slide frames 2222, and the driving end is driven to be connected to the second adjusting rod 2223 so as to drive the second adjusting rod 2223 to rotate through the second driving motor 2224; the two ends of the two second limiting rods 2225 are respectively fixedly connected to the two second slide frames 2222, and the two second limiting rods 2225 are symmetrically arranged on both sides of the second adjusting rod 2223; the two sides of the second slide 2226 are slidably connected to the two second limiting rods 2225 respectively, and the middle part is driven to be connected to the second adjusting rod 2223 so as to slide along the z-axis direction with the rotation of the second adjusting rod 2223; specifically, by setting two second adjusting groups 222, the load brought by the x-axis adjusting assembly 23 can be distributed, and the deformation and wear of a single second adjusting group 222 can be reduced; the two second limiting rods 2225 can be used to counteract the shaking of the second slide 2226 during the lifting process and limit the movement direction of the second slide 2226.

[0036] Please refer to Figure 3Furthermore, the x-axis adjustment assembly 23 includes a third fixed frame 231, two third slide frames 232, a third adjusting rod 233, a third drive motor 234, two third limiting rods 235, and a third slide 236. The third fixed frame 231 is arranged horizontally, and its two ends are fixedly connected to the top surfaces of the second slides 2226 of the two second adjustment assemblies 222 respectively. The two third slide frames 232 are symmetrically installed on the top surfaces of the third fixed frame 231 with the y-axis as the axis of symmetry. The two ends of the third adjusting rod 233 are rotatably installed on the two third slide frames 232 respectively. The fixed end of the third drive motor 234 is fixedly installed on one of the third slide frames 236. On the frame 232, the drive end is driven to the third adjusting rod 233 to drive the third adjusting rod 233 to rotate via the third drive motor 234; both ends of the two third limiting rods 235 are fixedly connected to the two third slide frames 232 respectively, and the two third limiting rods 235 are symmetrically arranged on both sides of the third adjusting rod 233; the two sides of the third slide 236 are slidably connected to the two third limiting rods 235 respectively, and the middle part is driven to the third adjusting rod 233 to slide along the x-axis as the third adjusting rod 233 rotates; specifically, the movement direction of the third slide 236 is restricted by the two third limiting rods 235, so that it moves smoothly along the x-axis.

[0037] Furthermore, the first adjusting rod 2122, the second adjusting rod 2223, and the third adjusting rod 233 are all lead screws. The first slide 2125 and the first adjusting rod 2122, the second slide 2226 and the second adjusting rod 2223, and the third slide 236 and the third adjusting rod 233 are all threaded connections, so that each slide can slide with the rotation of the corresponding adjusting rod. Specifically, the present invention uses a ball screw, and rolling friction is achieved between each adjusting rod and the slide through balls. The balls circulate within the screw and the slide, which greatly reduces friction compared to a traditional sliding screw. The screw journal has higher precision, and the surface of the screw is precision ground and heat-treated to ensure smooth transmission and high precision.

[0038] Please refer to Figure 6 Furthermore, the fixing component 31 includes a fixing housing 311 and a support plate 312. The bottom surface of the fixing housing 311 is fixedly connected to the top surface of the third slide 236, and the support plate 312 is installed vertically inside the fixing housing 311. Specifically, the fixing housing 311 is a semi-open structure. This design ensures the installation and operation space of the internal parts, and facilitates the observation of the transmission process and maintenance.

[0039] Please refer to Figures 6 to 10Furthermore, arc-shaped guide grooves 313 are formed on the inner side of the first side of the fixed housing 311 and the first side of the support plate 312; the claw assembly 32 includes a fourth drive motor 321, a fourth adjusting rod 322 and two clamping groups 324 with identical structures. The fixed end of the fourth drive motor 321 is fixedly installed on the outer side of the first side of the fixed housing 311; one end of the fourth adjusting rod 322 is rotatably connected to the second side of the fixed housing 311, and the other end is drivenly connected to the driving end of the fourth drive motor 321 to rotate under the drive of the fourth drive motor 321; a driving protrusion 324 is provided on the fourth adjusting rod 322 along its length direction; the two clamping groups 324 are respectively installed on the inner side of the first side of the fixed housing 311. On the first side of the side and support plate 312, each clamping assembly 324 includes a clamping platform 3241, a first clamping rod 3242, a guide bearing 3243, a second clamping rod 3244, and a jaw 3245. The clamping platform 3241 is rotatably mounted on the fixed housing 311 or the support plate 312, and a clamping groove is formed on the clamping platform 3241. A drive ring 3246 is formed at the first end of the first clamping rod 3242. The drive ring 3246 is fitted onto the fourth adjusting rod 322, and a drive groove 3247 is formed on the drive ring 3246 to engage with the drive protrusion 324, so that the first clamping rod 3242 can slide on the fourth adjusting rod 322 and rotate around the drive ring 3246 as the fourth adjusting rod 322 rotates. The outer edge of the guide bearing 3243 is slidably mounted in the arc-shaped guide groove 313, and the inner edge is fixedly connected to the inner side of the second end of the first clamping rod 3242, so that the second end of the first clamping rod 3242 rotates along the arc-shaped guide groove 313 under the drive of the fourth adjusting rod 322; the first end of the second clamping rod 3244 is rotatably mounted on the outer side of the second end of the first clamping rod 3242, and the second end is slidably mounted in the clamping groove, so that the angle between the second clamping rod 3244 and the fixed housing 311 changes with the rotation of the first clamping rod 3242; the gripper 3245 is fixedly mounted on the second end of the second clamping rod 3244 for clamping the heating coil 41; specifically, the first clamping rod 3242 When the first clamping rod 3242 moves upward under the drive of the fourth drive motor 321, the first end of the second clamping rod 3244 slides upward along the arc-shaped guide groove 313 along with the second end of the first clamping rod 3242. The second end of the second clamping rod 3244 extends out of the clamping groove and drives the clamping table 3241 to rotate outward, thereby causing the gripper 3245 to shift horizontally. When the first clamping rod 3242 moves downward under the drive of the fourth drive motor 321, the first end of the second clamping rod 3244 slides downward along the arc-shaped guide groove 313 along with the second end of the first clamping rod 3242. The second end of the second clamping rod 3244 retracts from the clamping groove and drives the clamping table 3241 to rotate inward, thereby causing the gripper 3245 to shift vertically.

[0040] In this embodiment, the gripper 3245 is fixed to the second end of the second clamping rod 3244 by bolts to stably clamp the heating coil 41, prevent the coil from shifting position, and make the heating coil 41 and the second clamping rod 3244 form a whole, so as to avoid affecting the quality of cladding due to movement.

[0041] Please refer to Figures 6 to 11 Furthermore, the clamping member 30 also includes an adjustment assembly 33, which includes three identical adjustment groups 331 and an adjustment handle 332. All three adjustment groups 331 are installed in the fixed housing 311 and are located at three corners of the side of the fixed housing 311. Each adjustment group 331 includes a fifth adjustment rod 3311, a fifth adjustment platform 3312, and a synchronous pulley 3313. The two ends of the fifth adjustment rod 3311 are rotatably connected to both sides of the fixed housing 311. The fifth adjustment platform 3312 is fixedly installed on the support plate 312 and threadedly connected to the fifth adjustment rod 3311, so that it moves along the length of the fifth adjustment rod 3311 as the fifth adjustment rod 3311 rotates, thereby driving the support plate 312 to move. The inner edge of the synchronous pulley 3313 is fixedly connected to the fifth adjustment rod 3311. The synchronous adjustment of the three adjustment groups 331... The outer edge of the pulley 3313 is connected by a synchronous belt 3314 to enable the three synchronous pulleys 3313 to rotate synchronously, thereby driving the fifth adjusting rod 3311 of the three adjusting groups 331 to rotate synchronously. The adjusting handle 332 is installed on the outside of the fixed housing 311 and extends into the fixed housing 311 to be fixedly connected to the fifth adjusting rod 3311 of one of the adjusting groups 331. It is used to drive the fifth adjusting rod 3311 of the corresponding adjusting group 331 to rotate through the adjusting handle 332, thereby adjusting the position of the support plate 312. Specifically, by changing the position of the support plate 312, the distance between the two grippers 3245 can be adjusted to accommodate heating coils 41 of different models. By adjusting the position of the support plate 312 through the three adjusting groups 331, the movement direction of the support plate 312 can be constrained, reducing the jamming or offset of the support plate 312 during movement.

[0042] Please refer to Figure 12Furthermore, the heating component 40 also includes an induction heating assembly 42 and a cooling assembly 43. The induction heating assembly 42 is electrically connected to the heating coil 41 so that energizing the heating coil 41 causes it to generate an induced magnetic field. The heating coil 41 has a hollow tube inside. The cooling assembly 43 includes a water pump 431 and a cooling water tank 432. The input end of the water pump 431 is connected to the output end of the cooling water tank 432, and the output end is connected to the first end of the heating coil 41 to deliver cooling water into the heating coil 41 to reduce the temperature of the heating coil 41. The second end of the heating coil 41 is connected to the input end of the cooling water tank 432 to deliver the cooled water after heat absorption to the cooling water tank 432. Specifically, the current applied by the induction heating component 42 to the heating coil 41 is in the same direction on the heating coil 41. This is to prevent opposite currents from generating opposing magnetic fields that cancel each other out, thereby improving heating efficiency. By reducing the temperature of the heating coil 41 through the cooling component 43, the overheating deformation or burnout of the heating coil 41 can be prevented, thereby extending the life of the heating coil 41 and ensuring the stability of the magnetic field output.

[0043] Furthermore, the heating coil 41 is shaped like a racetrack to generate a uniform magnetic field, thereby improving the uniformity of heating the surface of the part substrate by the heating coil 41. Specifically, the long straight edges on both sides of the racetrack-shaped coil form a uniformly distributed vertical magnetic field on its surface, while the smooth rounded corners effectively suppress magnetic field distortion and significantly reduce the attenuation of the magnetic field strength in the edge area. This design greatly improves the uniformity of the magnetic field within the coil coverage area and is more suitable for flat or curved workpieces.

[0044] In this embodiment, the heating coil 41 is made of copper or a copper alloy because copper conductors have high electrical conductivity, which can reduce energy loss when current flows through and improve the efficiency of the heating coil 41; copper conductors have good ductility and are suitable for winding coils of various shapes; copper conductors have a certain strength and elasticity, which can resist mechanical stress during winding.

[0045] In this embodiment, the first fixing frame 211, the second fixing frame 221, and the third fixing frame 231 are all made of aluminum alloy to provide a stable mounting platform and ensure the verticality or parallelism of the movement of the corresponding adjustment components. The first drive motor 2123, the second drive motor 2224, the third drive motor 234, and the fourth drive motor 321 are all servo motors. The controller mounted on each drive motor receives pulse signals to control the rotation angle and speed of the corresponding motor. Then, the rotational motion of each motor is converted into linear motion through the corresponding adjustment rod and slide, thereby accurately controlling the position of the corresponding slide through each drive motor.

[0046] Example 1: Usage of the electromagnetic induction auxiliary heating device 10 for arc additive manufacturing 1. Fix the part on the worktable, so that the initial position of the heating coil 41 is at a preset distance from the welding gun; 2. The position of the heating coil 41 is adjusted by the first drive motor 2123, the second drive motor 2224, the third drive motor 234 and the fourth drive motor 321 so that it is parallel to the surface of the part and maintains a constant distance. 3. Start the induction heating component 42 and pass an alternating current into the heating coil 41 to generate an induced magnetic field. This magnetic field penetrates the surface of the part and induces eddy currents on its surface, thereby preheating the substrate through the Joule heating effect. At the same time, start the cooling component 43 to prevent the heating coil 41 from overheating. 4. Start the electric arc heat source for cladding deposition, at which time the induction heating component 42 is temporarily turned off; 5. Once the first layer of metal deposition is complete, the induction heating component 42 is activated to maintain the temperature of the deposited layer; 6. Repeat the above steps after each metal layer is deposited; Specifically, preheating the parts to be clad before cladding reduces the temperature gradient between the high-temperature molten pool and the cold substrate during cladding, significantly reducing the thermal stress generated by cooling shrinkage and preventing stress concentration cracking in the cladding layer and heat-affected zone. Simultaneously, the triaxial adjustment component 20 and the claw assembly 32 dynamically adjust the position and angle of the heating coil 41, ensuring the magnetic field direction is always perpendicular to the surface of the parts to be clad, resulting in a uniform preheating temperature distribution and preventing localized overheating or underheating. Heating the cladding layer after cladding causes coarse columnar crystals to recrystallize at high temperatures, transforming into fine equiaxed crystals, while simultaneously decomposing hard and brittle phases (such as martensite), improving the toughness and fatigue resistance of the cladding layer. Furthermore, the triaxial adjustment component 20 and the claw assembly 32 dynamically adjust the position and angle of the heating coil 41, ensuring uniform heating of the part surface and preventing abnormal grain growth caused by localized overheating.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electromagnetic induction-assisted heating device for arc additive manufacturing, characterized in that, The device includes a three-axis adjustment component, a clamping component, and a heating component. The three-axis adjustment component includes a Y-axis adjustment assembly, a Z-axis adjustment assembly, and an X-axis adjustment assembly. The fixed end of the Y-axis adjustment assembly is mounted on the worktable of the workpiece, and its adjustment end is fixedly connected to the fixed end of the Z-axis adjustment assembly to adjust the position of the Z-axis adjustment assembly on the Y-axis. The adjustment end of the Z-axis adjustment assembly is fixedly connected to the fixed end of the X-axis adjustment assembly to adjust the position of the X-axis adjustment assembly on the Z-axis. The clamping component includes a fixing component and a jaw assembly. The fixed end of the fixing component is fixedly connected to the fixed end of the X-axis adjustment assembly to adjust the position of the fixing component on the X-axis. The fixed end of the jaw assembly is angle-adjustably mounted on the fixing component. The heating component includes a heating coil. The fixed end of the heating coil is mounted on the clamping end of the jaw assembly to adjust the angle between the heating end of the heating coil and the fixing component.

2. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 1, characterized in that, The y-axis adjustment assembly includes a first fixed frame and two identical first adjustment groups. The first fixed frame is horizontally mounted on the worktable for processing parts. The two first adjustment groups are symmetrically mounted on the top surface of the first fixed frame about the y-axis. Each first adjustment group includes two first slide frames, a first adjustment rod, a first drive motor, two first limit rods, and a first slide. The two first slide frames are symmetrically mounted on the first fixed frame about the x-axis. The two ends of the first adjustment rod are rotatably mounted on the two first slide frames. The fixed end of the first drive motor is fixedly mounted on one of the first slide frames, and the drive end is driven to the first adjustment rod to drive the first adjustment rod to rotate. The two ends of the two first limit rods are fixedly connected to the two first slide frames, and the two first limit rods are symmetrically arranged on both sides of the first adjustment rod. The two sides of the first slide are slidably connected to the two first limit rods, and the middle part is driven to the first adjustment rod to slide along the y-axis as the first adjustment rod rotates.

3. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 2, characterized in that, The z-axis adjustment assembly includes a second fixed frame and two identical second adjustment groups. The second fixed frame is arranged horizontally, and its two ends are fixedly connected to the top surfaces of the first slides of the two first adjustment groups. The two second adjustment groups are symmetrically installed on the sides of the second fixed frame about the z-axis. Each second adjustment group includes an adjustment frame, two second slide frames, a second adjustment rod, a second drive motor, two second limit rods, and a second slide. The adjustment frame is fixedly installed vertically on the sides of the second fixed frame, and the two second slide frames are symmetrically installed on the adjustment frame about the x-axis. The two ends of the second adjusting rod are rotatably mounted on two second slide frames respectively; the fixed end of the second drive motor is fixedly mounted on one of the second slide frames, and the driving end is drivenly connected to the second adjusting rod to drive the second adjusting rod to rotate; the two ends of the two second limiting rods are fixedly connected to the two second slide frames respectively, and the two second limiting rods are symmetrically arranged on both sides of the second adjusting rod; the two sides of the second slide are slidably connected to the two second limiting rods respectively, and the middle part is drivenly connected to the second adjusting rod to slide along the z-axis direction as the second adjusting rod rotates.

4. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 3, characterized in that, The x-axis adjustment assembly includes a third fixed frame, two third slide frames, a third adjusting rod, a third drive motor, two third limiting rods, and a third slide. The third fixed frame is arranged horizontally, with its bottom ends fixedly connected to the top surfaces of the second slides of the two second adjustment groups. The two third slide frames are symmetrically installed on the top surfaces of the third fixed frame about the y-axis. The two ends of the third adjusting rod are rotatably mounted on the two third slide frames. The fixed end of the third drive motor is fixedly installed on one of the third slide frames, and the driving end is driven to the third adjusting rod to drive its rotation. The two ends of the two third limiting rods are fixedly connected to the two third slide frames, and the two third limiting rods are symmetrically arranged on both sides of the third adjusting rod. The two sides of the third slide are slidably connected to the two third limiting rods, and the middle part is driven to the third adjusting rod to slide along the x-axis as the third adjusting rod rotates.

5. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 4, characterized in that, The first adjusting rod, the second adjusting rod, and the third adjusting rod are all lead screws. The first slide and the first adjusting rod, the second slide and the second adjusting rod, and the third slide and the third adjusting rod are all connected by threads, so that each slide can slide as the corresponding adjusting rod rotates.

6. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 4, characterized in that, The fixing assembly includes a fixing housing and a support plate. The bottom surface of the fixing housing is fixedly connected to the top surface of the third slide, and the support plate is installed vertically inside the fixing housing.

7. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 6, characterized in that, Arc-shaped guide grooves are provided on the inner side of the first side of the fixed housing and on the first side of the support plate; the claw assembly includes a fourth drive motor, a fourth adjusting rod, and two clamping groups with identical structures. The fixed end of the fourth drive motor is fixedly installed on the outer side of the first side of the fixed housing; one end of the fourth adjusting rod is rotatably connected to the second side of the fixed housing, and the other end is drivenly connected to the driving end of the fourth drive motor to rotate under the drive of the fourth drive motor; a driving protrusion is provided on the fourth adjusting rod along its length; the two clamping groups are respectively installed on the inner side of the first side of the fixed housing and the first side of the support plate. Each clamping group includes a clamping platform, a first clamping rod, a guide bearing, a second clamping rod, and a claw. The clamping platform is rotatably installed on the fixed housing or the support plate, and a clamping groove is provided on the clamping platform; The first clamping rod has a drive ring at its first end, which is fitted onto the fourth adjusting rod. The drive ring has a drive groove to engage with a drive protrusion, allowing the first clamping rod to slide on the fourth adjusting rod and rotate around the drive ring as the fourth adjusting rod rotates. The outer edge of the guide bearing is slidably mounted in an arc-shaped guide groove, and its inner edge is fixedly connected to the inner side of the second end of the first clamping rod, so that the second end of the first clamping rod rotates along the arc-shaped guide groove under the drive of the fourth adjusting rod. The first end of the second clamping rod is rotatably mounted on the outer side of the second end of the first clamping rod, and the second end is slidably mounted in a clamping groove, so that the angle between the second clamping rod and the fixed housing changes with the rotation of the first clamping rod. The gripper is fixedly mounted on the second end of the second clamping rod for clamping the heating coil.

8. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 7, characterized in that, The clamping component further includes an adjustment assembly, which comprises three identical adjustment groups and an adjustment handle. All three adjustment groups are installed in the fixed housing and are located at three corners of the side of the fixed housing. Each adjustment group includes a fifth adjustment rod, a fifth adjustment platform, and a synchronous pulley. The two ends of the fifth adjustment rod are rotatably connected to the two sides of the fixed housing. The fifth adjustment platform is fixedly installed on the support plate and threadedly connected to the fifth adjustment rod, so that it moves along the length of the fifth adjustment rod as the fifth adjustment rod rotates, thereby driving the support plate to move. The inner edge of the synchronous pulley is fixedly connected to the fifth adjustment rod, and the outer edges of the synchronous pulleys of the three adjustment groups are connected by a synchronous belt drive, so that the three synchronous pulleys rotate synchronously, thereby driving the fifth adjustment rods of the three adjustment groups to rotate synchronously. The adjustment handle is installed on the outside of the fixed housing and extends into the fixed housing, fixedly connected to the fifth adjustment rod of one of the adjustment groups, and is used to drive the fifth adjustment rod of the corresponding adjustment group to rotate via the adjustment handle.

9. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 1, characterized in that, The heating component further includes an induction heating component and a cooling component. The induction heating component is electrically connected to the heating coil so that energizing the heating coil causes it to generate an induced magnetic field. The heating coil has a hollow tube inside. The cooling component includes a water pump and a cooling water tank. The input end of the water pump is connected to the output end of the cooling water tank, and the output end is connected to the first end of the heating coil to deliver cooling water into the heating coil to reduce its temperature. The second end of the heating coil is connected to the input end of the cooling water tank to deliver the cooled water after heat absorption to the cooling water tank.

10. The electromagnetic induction-assisted heating device for arc additive manufacturing as described in claim 1, characterized in that, The heating coil is racetrack-shaped to generate a uniform magnetic field, thereby improving the uniformity of heating the surface of the component substrate.

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