A synchronous rotation control-based friction stir solid-phase additive continuous feeding system
The continuous feeding system for friction stir solid-state additive manufacturing, controlled by synchronous rotation, solves the problem of discontinuous raw material supply in friction stir welding additive manufacturing, realizes continuous and coordinated material supply, and improves the stability of additive manufacturing and component quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SUZHOU LABORATORY
- Filing Date
- 2026-04-16
- Publication Date
- 2026-06-09
AI Technical Summary
In existing friction stir welding additive manufacturing systems, the raw material supply method is intermittent, which affects the continuity of deposition and the quality of components, and poses safety hazards. There is a lack of a system solution for continuous and coordinated rotary feeding.
A continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control is adopted. Through a bottom rotation mechanism, a multi-stage straightening mechanism, a guiding mechanism, and an active roller feeding device, dynamic and coordinated control of the entire process from material feeding to deposition is achieved, ensuring the continuity and stability of additive manufacturing.
It enables continuous feeding in additive manufacturing, improves the overall quality and production stability of components, and avoids safety hazards such as equipment interruption and frequent manual intervention.
Smart Images
Figure CN122165017A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of feeding system technology, and in particular to a continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control. Background Technology
[0002] With the increasing demand for high-strength, lightweight, and large-size structural components in the aerospace industry, traditional aluminum alloy component manufacturing methods are facing problems such as low material utilization, long processing cycles, and limited processing dimensions. The widespread application of high-strength aluminum alloys in the main load-bearing components of aircraft has driven the development of solid-state additive manufacturing technology, especially additive friction stir deposition (AFD) based on the principle of friction stir welding. Deposition (AFSD) technology has become one of the key pathways to replace traditional subtractive processing and fused deposition modeling. Currently, AFSD systems mainly use manual feeding with solid rods as raw materials. Typically, after each deposition stage, operators replace the rods with new ones to continue deposition. This intermittent feeding method not only seriously affects the continuity of deposition and the overall quality of the components, but also causes equipment interruptions, makes it difficult to control the production cycle, and poses certain safety hazards due to frequent manual intervention. This has become one of the core bottlenecks restricting the further expansion of AFSD technology. At present, there are no publicly reported AFSD raw material supply systems that can achieve continuous and coordinated rotary feeding, especially a system solution that includes continuous traction and material extraction from coiled aluminum alloy discs, ensuring coordination with the speed of the additive spindle through dual-axis rotation control, and sequentially combining multi-stage guiding and straightening mechanisms, active roller feeding devices, and hot coil auxiliary heating structures to ultimately achieve integrated linkage control of the entire process of continuous solid-phase additive deposition. This is currently a blank in public literature and industrial applications. Summary of the Invention
[0003] To solve the above technical problems, the present invention provides a continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control, including a bottom rotating mechanism, a square worktable disposed on the bottom rotating mechanism, a forming mold disposed on the square worktable, a Z-axis lifting mechanism (10) disposed below the bottom rotating mechanism (1) and used to drive the square worktable (2) to move vertically, an X-axis moving mechanism disposed on both sides of the square worktable, a gantry mounted on the X-axis moving mechanism, a Y-axis moving mechanism mounted on the gantry, and a synchronous rotating feeding mechanism disposed on the Y-axis moving mechanism. The square worktable (2) is mounted on the bottom rotating mechanism (1) and its vertical position is adjusted by the Z-axis lifting mechanism (10). The forming mold is mounted on the square worktable. The synchronous rotating feeding mechanism is mounted on the Y-axis moving mechanism, and the X-axis moving mechanism is mounted on the X-axis moving mechanism.
[0004] As a further supplement to this technical solution, the X-axis moving mechanism includes a supporting profile, X-axis slide rails symmetrically arranged on the upper part of the supporting profile, an X-axis rack arranged on the supporting profile and located between the two X-axis slide rails, a first drive motor arranged on the gantry frame, and a first connecting gear connected to the first drive motor. The first connecting gear meshes with the X-axis rack. The first drive motor is fixedly installed on the gantry frame and the first connecting gear is arranged below the gantry frame. The X-axis slide rails and the X-axis rack are fixedly installed on the supporting profile. Multiple first sliders are provided on the lower two sides of the gantry frame and the first sliders are slidably installed on the X-axis slide rails.
[0005] As a further supplement to this technical solution, the Z-axis lifting mechanism includes a lifting support mounted on the bottom rotating mechanism and a lifting drive assembly mounted between the lifting support and the square worktable. Multiple mounting blocks are provided below the supporting profile, and mounting holes are provided on the left and right sides of the mounting blocks for fixing the device.
[0006] As a further supplement to this technical solution, the Y-axis moving mechanism includes Y-axis slide rails disposed at the upper and lower ends of the gantry frame, a Y-axis rack disposed between the upper and lower ends of the Y-axis slide rails, a second connecting gear meshing with the Y-axis rack, a second drive motor connected to the second connecting gear, and a moving frame connected to the second drive motor. The Y-axis slide rails are fixedly installed on the gantry frame, the Y-axis rack is fixedly installed on the gantry frame, and the moving frame has multiple second sliders on its upper and lower sides, which are slidably installed on the Y-axis slide rails. The synchronous rotating feeding mechanism is installed on the moving frame, and the moving frame has reinforcing ribs on its front and rear sides, which are fixedly installed on the moving frame.
[0007] As a further supplement to this technical solution, the synchronous rotary feeding mechanism includes a material roll mechanism, a material tray drive mechanism disposed below the material roll mechanism, a fixed frame disposed on a movable frame, a disc disposed above the fixed frame, a main straightening mechanism disposed on the disc, a secondary straightening mechanism disposed on the fixed frame, a guide mechanism disposed on the fixed frame, a feeding mechanism disposed on the fixed frame, a stirring head disposed below the feeding mechanism, and a coil heating device disposed on the stirring head. The material roll mechanism is mounted on the movable frame, the material tray drive mechanism is disposed below the material roll mechanism, the fixed frame is fixedly mounted on the movable frame, the main straightening mechanism is mounted on the disc, the secondary straightening mechanism is mounted on the fixed frame, the guide mechanism is fixedly mounted on the fixed frame, the feeding mechanism is fixedly mounted on the fixed frame, the stirring head is disposed below the feeding mechanism, and the coil heating device is mounted on the stirring head.
[0008] As a further supplement to this technical solution, the material tray driving mechanism includes a third drive motor, a third connecting gear connected to the third drive motor, and a base connected to the third connecting gear via a synchronous belt. The third drive motor is fixedly installed on the movable frame, and the base is located below the material tray.
[0009] As a further supplement to this technical solution, a limiting frame is provided above the movable frame and outside the material tray. The limiting frame includes a limiting plate disposed outside the material tray and a plurality of support columns arranged in a circumferential array below the limiting plate. The upper end of the support column is fixedly installed on the lower surface of the limiting plate, and the lower end of the support column is fixedly installed on the movable frame.
[0010] Further supplementing this technical solution, the main straightening mechanism includes two vertically arranged and relatively rotating first straightening wheels, and two relatively rotating second straightening wheels arranged horizontally on one side of the first straightening wheels. The auxiliary straightening mechanism includes a third straightening wheel group, a fourth straightening wheel group, a fifth straightening wheel group, and a sixth straightening wheel group mounted on a fixed frame. The third, fourth, and sixth straightening wheel groups are arranged in parallel, and the fifth straightening wheel group is arranged perpendicular to the third straightening wheel group. The additive material sequentially passes through the first straightening wheel, the second straightening wheel, the guide mechanism, the third straightening wheel group, the fourth straightening wheel group, the fifth straightening wheel group, the sixth straightening wheel group, the feeding mechanism, and the mixing head.
[0011] Further supplementing this technical solution, the stirring head includes an outer ring stirring head, an inner ring stirring head disposed inside the outer ring stirring head, and a coil heating device disposed on the inner ring stirring head. The stirring head adopts an inner and outer differential speed double-shaft sleeve structure. The outer ring stirring head covers the inner ring stirring head and the coil heating device, and the two are assembled in a coaxial nesting manner with a tight fit at the bottom end face. The outer ring stirring head and the inner ring stirring head are driven to rotate by independent servo motors and do not interfere with each other. The end of the outer ring stirring head is provided with multiple spiral-shaped drainage grooves, and the inner ring stirring head rotates at a low speed synchronously with the material tray.
[0012] As a further supplement to this technical solution, a plurality of damping sliding mechanisms are provided on the circumference above the moving frame and below the material tray, and the damping sliding mechanisms are mounted on the moving frame.
[0013] Its beneficial effects are that the system drives the material tray and the additive spindle to rotate synchronously through a unified motor drive. Combined with raw material traction release, multi-stage straightening, guidance and active feeding, inner and outer ring differential speed stirring structure and induction heating, it realizes dynamic and coordinated control of the entire process of material feeding and deposition, which significantly improves the continuity, stability and microstructure quality of additive manufacturing, and realizes true continuous feeding stirring friction solid phase additive manufacturing. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first angle; Figure 2 This is a schematic diagram of the overall structure of the present invention from a second angle; Figure 3 This is a schematic diagram of the overall structure of the present invention from a third angle; Figure 4 This is a schematic diagram of the synchronous rotary feeding mechanism of the present invention; Figure 5 This is a schematic diagram of the synchronous rotary feeding mechanism (without the limit frame) of the present invention; In the diagram: 1. Bottom rotating mechanism; 2. Square worktable; 3. Forming mold; 4. Y-axis moving mechanism; 41. Support profile; 42. Y-axis slide rail; 43. Y-axis rack; 44. First drive motor; 45. First connecting gear; 46. First slider; 47. Mounting block; 5. Gantry frame; 6. X-axis moving mechanism; 61. X-axis slide rail; 62. X-axis rack; 63. Second connecting gear; 64. Second drive motor; 65. Moving frame; 66. Second slider; 7. Synchronous rotating feeding mechanism; 71. Material roll mechanism; 72. Material tray drive motor 721. Third drive motor; 722. Third connecting gear; 723. Base; 73. Fixing frame; 74. Disc; 75. Main straightening mechanism; 751. First straightening wheel; 752. Second straightening wheel; 76. Auxiliary straightening mechanism; 761. Third straightening wheel group; 762. Fourth straightening wheel group; 763. Fifth straightening wheel group; 764. Sixth straightening wheel group; 77. Guide mechanism; 78. Feeding mechanism; 79. Mixing head; 8. Limiting frame; 81. Limiting disc; 82. Support column; 9. Damping sliding mechanism; 10. Z-axis lifting mechanism. Detailed Implementation
[0015] To facilitate a clearer understanding of this technical solution for those skilled in the art, the following will be described in conjunction with the appendix. Figure 1-5 The technical solution of the present invention is described in detail below: A continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control includes a bottom rotating mechanism 1, a square worktable 2 mounted on the bottom rotating mechanism 1, a forming mold 3 mounted on the square worktable 2, a Z-axis lifting mechanism 10 located below the bottom rotating mechanism 1 for driving the square worktable 2 to move vertically, X-axis moving mechanisms 4 located on both sides of the square worktable 2, a gantry frame 5 mounted on the X-axis moving mechanism 4, a Y-axis moving mechanism 6 mounted on the gantry frame 5, and a synchronous rotation feeding mechanism 7 mounted on the Y-axis moving mechanism 6. The square worktable 2 is mounted on the bottom rotating mechanism 1 and its vertical position is adjusted by the Z-axis lifting mechanism 10, thus achieving vertical position adjustment of the worktable during the forming process. The forming mold 3 is mounted on the square worktable 2, the synchronous rotation feeding mechanism 7 is mounted on the Y-axis moving mechanism 6, and the Y-axis moving mechanism 6 is mounted on the X-axis moving mechanism 4, thereby forming X, Y, Z axes. This invention employs a three-axis linkage spatial motion structure to meet the processing requirements of different forming heights and trajectory paths in friction stir solid-state additive manufacturing. Unlike traditional gantry beam structures that move in the Y-axis, where the feed tray and additive spindle must maintain a constant relative position during feeding, a traditional gantry sliding structure would cause the feed line to be stretched, sheared, or even broken during movement. This invention uses a worktable to move along the X / Y axes while keeping the additive spindle and feed tray system stationary, ensuring the spatial rigidity and stability of the feeding path.
[0016] The structure of the X-axis moving mechanism 4 will be described in detail below. The X-axis moving mechanism 4 includes a support profile 41, X-axis slide rails 42 symmetrically arranged on the support profile 41, a Y-axis rack 43 arranged on the support profile 41 and located between the two X-axis slide rails 42, a first drive motor 44 arranged on the gantry frame 5, and a first connecting gear 45 connected to the first drive motor 44. The first connecting gear 45 meshes with the X-axis rack 43. The first drive motor 44 is fixedly installed on the gantry frame 5, and the first connecting gear 45 is located below the gantry frame 5. The X-axis slide rails 42 and the X-axis rack 43 are fixedly installed on the gantry frame 5. The device is fixedly installed on the support profile 41. Multiple first sliders 46 are provided on both sides of the lower part of the gantry frame 5, and the first sliders 46 are slidably installed on the X-axis slide rail 42. The Z-axis lifting mechanism 10 includes a lifting support set on the bottom rotating mechanism 1 and a lifting drive assembly set between the lifting support and the square worktable 2. The lifting drive assembly is used to drive the square worktable 2 and the forming mold 3 to lift and lower in the vertical direction as a whole to adapt to the processing requirements of different additive forming heights. Multiple mounting blocks 47 are provided below the support profile 41. Mounting holes are provided on the left and right sides of the mounting blocks 47 for fixing the device.
[0017] The structure of the Y-axis moving mechanism 6 will be described in detail below. The Y-axis moving mechanism 6 includes Y-axis slide rails 61 disposed at the upper and lower ends of the gantry frame 5, Y-axis rack 62 disposed between the Y-axis slide rails 61 at the upper and lower ends, a second connecting gear 63 meshing with the Y-axis rack 62, a second drive motor 64 connected to the second connecting gear 63, and a moving frame 65 connected to the second drive motor 64. The Y-axis slide rails 61 are fixedly installed on the gantry frame 5, the Y-axis rack 62 is fixedly installed on the gantry frame 5, and the moving frame 65 has multiple second sliders 66 on its upper and lower sides, and the second sliders 66 are slidably installed on the Y-axis slide rails 61. The synchronous rotating feeding mechanism 7 is installed on the moving frame 65, and the moving frame 65 has reinforcing ribs on its front and rear sides, and the reinforcing ribs are fixedly installed on the moving frame 65.
[0018] The structure of the synchronous rotary feeding mechanism 787 will be described in detail below. The synchronous rotary feeding mechanism 787 includes a material coil mechanism 71, a material tray drive mechanism 72 located below the material coil mechanism 71, a fixed frame 73 located on the movable frame 65, a disc 74 located above the fixed frame 73, a main straightening mechanism 75 located on the disc 74, a secondary straightening mechanism 76 located on the fixed frame 73, a guide mechanism 77 located on the fixed frame 73, a feeding mechanism 78 located on the fixed frame 73, a stirring head 79 located below the feeding mechanism 78, and a coil heating device located on the stirring head 79. The material coil mechanism 71 is mounted on the movable frame 65, the material tray drive mechanism 72 is located below the material coil mechanism 71, the fixed frame 73 is fixedly mounted on the movable frame 65, the main straightening mechanism 75 is mounted on the disc 74, the secondary straightening mechanism 76 is mounted on the fixed frame 73, and the guide mechanism 77... Mechanism 77 is fixedly installed on the fixed frame 73, the feeding mechanism 78 is fixedly installed on the fixed frame 73, the stirring head 79 is located below the feeding mechanism 78, and the coil heating device is installed on the stirring head 79. The coiled aluminum alloy material tray is mounted on the central axis of the coiling mechanism 71 through bearings and can rotate around the central axis. The central axis is driven by the material tray drive mechanism 72, so that the material tray base 723 and the inner ring stirring head 79 rotate synchronously. Since the two are rigidly driven by the same motor, their rotational angular velocities are naturally consistent and there is no speed difference, thereby ensuring that the wire does not twist or entangle during the feeding process. In order to avoid the drive device interfering with the feeding path, the material tray drive mechanism 72 is preferably arranged on the circumference of the material tray base 723. The base 723 is rotated through a gear ring or synchronous belt, so that the central area is completely empty, thereby ensuring that the wire can smoothly enter the multi-stage straightening, guiding and feeding mechanism 78 after being drawn out. This structure ensures controlled release of the coiled material during synchronous rotation while avoiding potential obstruction of the feeding channel due to the central shaft drive. To ensure stable and continuous feeding of the bar wire along the path from the material tray to the hollow stirring head 79 of the additive spindle, the invention first sets up a main straightening mechanism 75 to stably draw the aluminum alloy round bar wire from the rotating coil. The bar wire then passes through a guide mechanism 77, followed by multi-stage straightening rollers that roll it segment by segment, eliminating initial residual stress and curvature of the coil to achieve a straight shape and limit its trajectory in space, preventing swaying and swinging due to rotational inertia. Finally, it is clamped and conveyed by a feeding mechanism 78, driven by an active motor, which allows for thrust adjustment and tension control, ensuring the bar wire enters the additive zone at a constant speed. This module, through a four-stage coordinated structure of "traction-guidance-straightening-feeding," effectively guarantees the straightness, tension stability, and path consistency of the fed wire, providing a fundamental guarantee for high-quality deposition.
[0019] The structure of the material tray drive mechanism 72 will be described in detail below. The material tray drive mechanism 72 includes a third drive motor 721, a third connecting gear 722 connected to the third drive motor 721, and a base 723 connected to the third connecting gear 722 via a synchronous belt. The third drive motor 721 is fixedly installed on the movable frame 65. The base 723 is located below the material tray and is hollow. The fixed frame 73 passes through the base 723.
[0020] Among them, a limiting frame 8 is provided above the movable frame 65 and located outside the material tray. The limiting frame 8 includes a limiting plate 81 disposed outside the material tray and a plurality of support columns 82 arranged in a circumferential array below the limiting plate 81. The upper end of the support column 82 is fixedly installed on the lower surface of the limiting plate 81, and the lower end of the support column 82 is fixedly installed on the movable frame 65.
[0021] The structure of the main straightening mechanism 75 and the auxiliary straightening mechanism 76 will be described in detail below. The main straightening mechanism 75 includes two vertically arranged and relatively rotating first straightening wheels 751, and two relatively rotating second straightening wheels 752 arranged horizontally on one side of the first straightening wheels 751. The auxiliary straightening mechanism 76 includes a third straightening wheel assembly 761, a fourth straightening wheel assembly 762, a fifth straightening wheel assembly 763, and a sixth straightening wheel assembly 764, all mounted on the fixed frame 73. The third straightening wheel assembly 761, the fourth straightening wheel assembly 762, and the sixth straightening wheel assembly 764 are arranged in parallel. The fifth straightening wheel assembly 763 is parallel to the third straightening wheel assembly 761. Vertically positioned, the additive material sequentially passes through the first straightening roller 751, the second straightening roller 752, the guide mechanism 77, the third straightening roller group 761, the fourth straightening roller group 762, the fifth straightening roller group 763, the sixth straightening roller group 764, the feeding mechanism 78, and the stirring head 79. This system can stably pull, straighten, and guide the continuously released wire from the rotating tray to the inner ring stirring head 79. During the feeding process, it maintains straightness and constant tension, ensuring that the wire smoothly enters the stirring zone and is fully softened, providing a basic guarantee for high-quality deposition molding. During operation, under the operation of the second drive motor 64, it can both clamp the bar material and rotate it around the central axis, and provide downward roller feeding force. The bar material is pushed into the inner ring hollow stirring head 79 during the conveying process, realizing synchronous feeding and rotation.
[0022] The stirring head 79 includes an outer ring stirring head, an inner ring stirring head disposed inside the outer ring stirring head, and a coil heating device disposed on the inner ring stirring head. The outer ring stirring head covers the inner ring stirring head and the coil heating device, and the two are assembled in a coaxial nesting manner with a tight fit at their bottom end faces. The outer ring stirring head and the inner ring stirring head are driven to rotate by independent servo motors and do not interfere with each other. The end of the outer ring stirring head is provided with multiple spiral-shaped flow channels, which can guide the softened material to form a stable spiral flow trajectory during rotation, enhance interlayer fusion efficiency, and improve additive compactness. Driven by a servo motor, the high-speed rotation is set according to process requirements to complete the tasks of material mixing, plasticizing, and deposition molding. The inner ring stirring head rotates at a low speed in sync with the material tray, and the two always maintain the same angular velocity, thereby avoiding problems such as kinking and slippage during the feeding process. Among them, the stirring head 79 adopts an inner and outer differential speed double shaft sleeve structure to take into account synchronous feeding, heat input compensation, and stirring effect. This structure consists of two independently rotating coaxial stirring heads 79: the inner ring stirring head is directly connected to the main channel of the additive spindle and rotates at a low speed together with the additive spindle, and is part of the additive spindle unit.
[0023] Multiple damping sliding mechanisms 9 are provided on the circumference of the movable frame 65 above and below the material tray, and the damping sliding mechanisms 9 are installed on the movable frame 65.
[0024] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.
Claims
1. A continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control, characterized in that, The device includes a bottom rotating mechanism (1), a square worktable (2) mounted on the bottom rotating mechanism (1), a forming mold (3) mounted on the square worktable (2), a Z-axis lifting mechanism (10) mounted below the bottom rotating mechanism (1) and used to drive the square worktable (2) to move vertically, an X-axis moving mechanism (4) mounted on both sides of the square worktable (2), a gantry frame (5) mounted on the X-axis moving mechanism (4), a Y-axis moving mechanism (6) mounted on the gantry frame (5), and a synchronous rotating feeding mechanism (7) mounted on the Y-axis moving mechanism (6). The square worktable (2) is mounted on the bottom rotating mechanism (1) and its vertical position is adjusted by the Z-axis lifting mechanism (10). The forming mold (3) is mounted on the square worktable (2). The synchronous rotating feeding mechanism (7) is mounted on the Y-axis moving mechanism (6). The Y-axis moving mechanism (6) is mounted on the X-axis moving mechanism (4).
2. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 1, characterized in that, The X-axis moving mechanism (4) includes a support profile (41), X-axis slide rails (42) symmetrically arranged on the upper part of the support profile (41), an X-axis rack (43) arranged on the support profile (41) and located between the two X-axis slide rails (42), a first drive motor (44) arranged on the gantry frame (5), and a first connecting gear (45) connected to the first drive motor (44). The first connecting gear (45) meshes with the X-axis rack (43). The first drive motor (44) is fixedly installed on the gantry frame (5) and the first connecting gear (45) is arranged below the gantry frame (5). The X-axis slide rails (42) and the X-axis rack (43) are fixedly installed on the support profile (41). Multiple first sliders (46) are provided on the lower two sides of the gantry frame (5) and the first sliders (46) are slidably installed on the X-axis slide rails (42).
3. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 2, characterized in that, The Z-axis lifting mechanism (10) includes a lifting support set on the bottom rotating mechanism (1) and a lifting drive assembly set between the lifting support and the square worktable (2). Multiple mounting blocks (47) are provided below the support profile (41), and mounting holes are provided on the left and right sides of the mounting blocks (47) for fixing the device.
4. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 3, characterized in that, The Y-axis moving mechanism (6) includes a Y-axis slide rail (61) set at the upper and lower ends of the gantry frame (5), a Y-axis rack (62) set between the Y-axis slide rails (61) at the upper and lower ends, a second connecting gear (63) meshing with the Y-axis rack (62), a second drive motor (64) connected to the second connecting gear (63), and a moving frame (65) connected to the second drive motor (64). The Y-axis slide rail (61) is fixedly installed on the gantry frame (5), the Y-axis rack (62) is fixedly installed on the gantry frame (5), and the moving frame (65) has multiple second sliders (66) on its upper and lower sides, and the second sliders (66) are slidably installed on the Y-axis slide rail (61). The synchronous rotating feeding mechanism (7) is installed on the moving frame (65), and the moving frame (65) has reinforcing ribs on its front and rear sides, and the reinforcing ribs are fixedly installed on the moving frame (65).
5. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 4, characterized in that, The synchronous rotary feeding mechanism (7) includes a material roll mechanism (71), a material tray drive mechanism (72) disposed below the material roll mechanism (71), a fixed frame (73) disposed on the movable frame (65), a disc (74) disposed above the fixed frame (73), a main straightening mechanism (75) disposed on the disc (74), a secondary straightening mechanism (76) disposed on the fixed frame (73), a guide mechanism (77) disposed on the fixed frame (73), a feeding mechanism (78) disposed on the fixed frame (73), a stirring head (79) disposed below the feeding mechanism (78), and a coil feeder disposed on the stirring head (79). The heating device includes a material roll mechanism (71) mounted on a movable frame (65), a material tray drive mechanism (72) located below the material roll mechanism (71), a fixed frame (73) fixedly mounted on the movable frame (65), a main straightening mechanism (75) mounted on a disc (74), a secondary straightening mechanism (76) mounted on the fixed frame (73), a guide mechanism (77) fixedly mounted on the fixed frame (73), a feeding mechanism (78) fixedly mounted on the fixed frame (73), a stirring head (79) located below the feeding mechanism (78), and a coil heating device mounted on the stirring head (79).
6. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 5, characterized in that, The material tray drive mechanism (72) includes a third drive motor (721), a third connecting gear (722) connected to the third drive motor (721), and a base (723) connected to the third connecting gear (722) via a synchronous belt. The third drive motor (721) is fixedly installed on the movable frame (65), and the base (723) is located below the material tray.
7. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 6, characterized in that, A limiting frame (8) is provided above the movable frame (65) and outside the material tray. The limiting frame (8) includes a limiting plate (81) disposed outside the material tray and a plurality of support columns (82) arranged in a circumferential array below the limiting plate (81). The upper end of the support column (82) is fixedly installed on the lower surface of the limiting plate (81), and the lower end of the support column (82) is fixedly installed on the movable frame (65).
8. The continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 7, characterized in that, The main straightening mechanism (75) includes two vertically arranged and relatively rotating first straightening wheels (751), and two relatively rotating second straightening wheels (752) arranged horizontally on one side of the first straightening wheels (751). The auxiliary straightening mechanism (76) includes a third straightening wheel (761) set on the fixed frame (73), a fourth straightening wheel (762) set on the fixed frame (73), a fifth straightening wheel (763) set on the fixed frame (73), and a sixth straightening wheel set on the fixed frame (73). (764) The third straightening wheel group (761), the fourth straightening wheel group (762), and the sixth straightening wheel group (764) are arranged in parallel, and the fifth straightening wheel group (763) is arranged perpendicular to the third straightening wheel group (761); the additive material passes sequentially through the first straightening wheel (751), the second straightening wheel (752), the guide mechanism (77), the third straightening wheel group (761), the fourth straightening wheel group (762), the fifth straightening wheel group (763), the sixth straightening wheel group (764), the feeding mechanism (78), and the stirring head (79).
9. A continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to claim 5, characterized in that, The stirring head (79) includes an outer ring stirring head, an inner ring stirring head disposed inside the outer ring stirring head, and a coil heating device disposed on the inner ring stirring head. The stirring head adopts an inner and outer differential speed double shaft sleeve structure. The outer ring stirring head covers the inner ring stirring head and the coil heating device and the two are assembled in a coaxial nesting manner, with the bottom end face tightly fitted. The outer ring stirring head and the inner ring stirring head are driven to rotate by independent servo motors and do not interfere with each other. The end of the outer ring stirring head is provided with multiple spiral-shaped drainage grooves, and the inner ring stirring head rotates at low speed synchronously with the material tray.
10. A continuous feeding system for friction stir solid-phase additive manufacturing based on synchronous rotation control according to any one of claims 5-9, characterized in that, Multiple damping sliding mechanisms (9) are provided on the circumference of the moving frame (65) above and below the material tray, and the damping sliding mechanisms (9) are installed on the moving frame (65).