Friction stir additive manufacturing equipment
By designing a wire feeding mechanism suitable for elastic deformation and a rotatable wire feeding nozzle, the problems of wire plugging and wire stress in additive manufacturing are solved, and the stability and smoothness of wire conveying are achieved.
Patent Information
- Application Number
- CN202422247958.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-12
AI Technical Summary
In friction stir additive manufacturing, the intermittent process of cutting wire materials by additive manufacturing welding tools leads to increased wire plugging and wire stress, affecting the difficulty of wire conveying.
A friction stir additive manufacturing device including a wire feeding mechanism is designed. The wire feeding mechanism includes a first bracket adapted to elastically deform in a vertical direction and a horizontally rotatable wire feeding nozzle, which can adapt to the movement changes of the wire material, absorb deformation resistance and adjust the wire feeding direction to prevent wire blockage.
Through the adaptive deformation wire feeding mechanism, the wire stress is reduced, the smoothness of wire conveying is improved, wire blockage is prevented, and the continuous wire conveying process is ensured.
Smart Images
Figure CN223129596U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of friction stir additive manufacturing, and particularly relates to a friction stir additive manufacturing device. Background Art
[0002] During the wire feeding process of friction stir additive manufacturing, the wire needs to continuously enter to achieve continuous additive manufacturing. However, since the additive manufacturing welding tool cuts the wire in an intermittent process, the wire may experience wire jamming. At the same time, the additive manufacturing welding tool cutting the wire has a reciprocating process of cutting the wire and not cutting the wire, and this reciprocating process will also cause the wire to bear huge stress, which may cause the deformation of the welding tool, increasing the difficulty of wire feeding.
[0003] To solve these problems, the utility model proposes a friction stir additive manufacturing device. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a friction stir additive manufacturing device aiming at the deficiencies existing in the prior art, and solve the problem that in the prior art, since the additive manufacturing welding tool cuts the wire in an intermittent process, the wire may experience wire jamming.
[0005] To achieve the above purpose, the utility model provides a friction stir additive manufacturing device, including: a wire feeding mechanism and an additive manufacturing welding tool; the wire feeding mechanism includes: a wire feeder, which is adapted to drive the wire to feed the wire to the additive manufacturing welding tool; a first bracket, which is located at the rear end of the wire feeder, and the first bracket is adapted to elastically deform in the vertical direction; a wire feeding nozzle, which is located at the rear end of the first bracket, and the wire feeding nozzle is adapted to rotate in the horizontal direction, and one end of the wire feeding nozzle extends obliquely towards the main shaft of the additive manufacturing welding tool.
[0006] The advantages of the friction stir additive manufacturing device compared with the prior art are as follows: by setting the first bracket that is adapted to elastically deform in the vertical direction, when wire jamming occurs, the first bracket can deform to absorb the deformation resistance and reduce the wire stress at the same time. When feeding the wire normally, the first bracket can deform and recover, which is convenient for absorbing stress next time. In addition, the wire feeding nozzle is adapted to rotate in the horizontal direction and can adaptively change to avoid wire jamming. Therefore, even when the additive manufacturing welding tool cuts the wire intermittently, the wire feeding mechanism of the utility model can adaptively deform to prevent wire jamming and improve the smoothness of wire feeding.
[0007] In some embodiments, the wire feeding mechanism further includes: a second bracket, which is connected to the first bracket, and the wire feeding nozzle is rotatably connected to the first bracket through the second bracket.
[0008] In some embodiments, a vertical chute is provided in the first bracket, and the second bracket is slidably mounted in the chute.
[0009] In some embodiments, the second bracket includes: a rotating part, at least a part of the second bracket extends out of the chute to form the rotating part; a wire feeding part, the wire feeding nozzle is mounted on the wire feeding part, and the wire feeding part is rotatably connected to the rotating part in the horizontal direction. Wherein, a surface of the rotating part facing the wire feeding nozzle is an arc surface, and the wire feeding part is provided with a rotating groove matching the shape of the arc surface so that the arc surface fits in the rotating groove.
[0010] In some embodiments, the wire feeder includes: a frame, the frame is arranged on one side of the additive manufacturing welding tool; a wire feeding pipe, the wire feeding pipe is arranged on the frame; a wire guiding nozzle, the wire guiding nozzle is arranged on the frame and is arranged opposite to the wire feeding pipe; a transmission mechanism, the transmission mechanism is arranged on the frame and is located between the wire feeding pipe and the wire guiding nozzle, and the transmission mechanism is used to convey the wire in the wire feeding pipe to the wire guiding nozzle, and the wire in the wire guiding nozzle is conveyed to the wire feeding nozzle.
[0011] In some embodiments, the transmission mechanism includes: two wire feeding wheels, the two wire feeding wheels are parallel axially, and the wire passes between the two wire feeding wheels so that the wire feeding wheels drive the wire to the wire guiding nozzle; a driving member, the driving member is power-coupled to both of the two wire feeding wheels to drive the wire feeding wheels to rotate.
[0012] In some embodiments, the driving member includes: a driving motor; a first transmission shaft, the first transmission shaft is rotatably mounted on the frame, an input end of the first transmission shaft is power-coupled to an output end of the driving motor, and an output end of the first transmission shaft is fixedly connected to one of the wire feeding wheels.
[0013] In some embodiments, the wire feeding wheel includes a guiding part and a driving part, the driving part is located at an end of the guiding part away from the first transmission shaft, the guiding parts of the two wire feeding wheels are adapted to clamp the wire, and the driving parts of the two wire feeding wheels are configured as gears meshing with each other.
[0014] In some embodiments, the driving motor is connected to the first transmission shaft through a steering member, and the steering member includes: a second transmission shaft rotatably mounted on the frame, the axis of the second transmission shaft being perpendicular to the axis of the first transmission shaft, the second transmission shaft including a connected first shaft section and a second shaft section, the diameter of the first shaft section being greater than the diameter of the second shaft section, one end of the first shaft section having a keyway, the output end of the driving motor being connected to the keyway through a spline, and the length of the output end of the driving motor located within the keyway being less than the depth of the keyway; a first bevel gear provided on the second shaft section; and a second bevel gear provided on the first transmission shaft, the first bevel gear meshing with the second bevel gear. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0016] Figure 1 is a schematic structural diagram of the wire feeding mechanism according to an embodiment of the present utility model;
[0017] Figure 2 is a schematic connection structure diagram of the first bracket and the second bracket according to an embodiment of the present utility model;
[0018] Figure 3 is a schematic cooperation diagram of the wire feeding nozzle and the additive manufacturing welding tool according to an embodiment of the present utility model;
[0019] Figure 4 is a schematic structural diagram of the transmission mechanism according to an embodiment of the present utility model.
[0020] REFERENCE SIGNS:
[0021] 10, wire feeding mechanism; 11, wire feeder; 111, frame; 112, wire feeding tube; 113, wire guiding nozzle; 12, first bracket; 13, wire feeding nozzle; 14, second bracket; 141, sliding groove; 142, rotating part; 143, wire feeding part; 144, rotating groove; 20, additive manufacturing welding tool; 30, transmission mechanism; 31, wire feeding wheel; 311, guiding part; 312, driving part; 32, driving member; 321, driving motor; 322, first transmission shaft; 33, steering member; 331, second transmission shaft; 332, first bevel gear; 333, second bevel gear. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.
[0023] Reference is made below to Figures 1 - 4 Describe a friction stir additive manufacturing device according to an embodiment of the present utility model, including a wire feeding mechanism 10 and an additive manufacturing welding tool 20. The wire feeding mechanism 10 is used to convey wire materials to the additive manufacturing welding tool 20. The wire feeding mechanism 10 includes: a wire feeder 11, a first bracket 12, and a wire feeding nozzle 13. The wire feeder 11 is adapted to drive the wire material to feed wire to the additive manufacturing welding tool 20. The first bracket 12 is located at the rear end of the wire feeder 11. The first bracket 12 is adapted to elastically deform in the vertical direction, that is, the first bracket 12 can deform adaptively with the movement of the wire material, and then the wire feeding nozzle 13 installed on the first bracket 12 moves. The elastic deformation of the first bracket 12 follows the movement of the wire material, so that the wire feeding nozzle 13 can adapt to the change of the wire feeding speed of the wire material or the swing of the wire material. Among them, the elastic deformation of the first bracket 12 is that when the first bracket 12 is not stressed, it maintains a fixed shape, deforms and stores elastic potential energy when stressed by situations such as the swing of the wire material, and has the ability to restore the above fixed shape when the first bracket 12 is not stressed. Thus, the first bracket 12 can move with the wire material, and then adapt to the change of the wire feeding speed and swing of the wire material. When wire jamming occurs, the first bracket 12 can elastically deform in the vertical direction to absorb the deformation resistance, thereby preventing wire jamming. The wire feeding nozzle 13 is located at the rear end of the first bracket 12, and the wire feeding nozzle 13 is adapted to rotate in the horizontal direction, that is, the wire feeding nozzle 13 can rotate and the rotation axis is in the horizontal direction. When the wire feeding nozzle 13 is subjected to the pressure of wire material conveyance, it will rotate along the axis in the horizontal direction, and then drive one end of the wire material output by the wire feeding nozzle 13 to approach or move away from the additive manufacturing welding tool 20. One end of the wire feeding nozzle 13 extends obliquely towards the main axis of the additive manufacturing welding tool 20. The wire feeding nozzle 13 can adjust the direction according to the actual situation to ensure that the wire material can be accurately conveyed to the additive manufacturing welding tool 20, and when wire jamming occurs, the wire feeding nozzle 13 can rotate to adapt to the deformation of the wire material.
[0024] Specifically, in the embodiments of the present utility model, the direction of wire material conveyance is used as the reference direction. The end located in the advancing direction of the wire material is defined as the front end. When the wire material moves along this direction, it will first reach this end; the other end opposite to the front end is defined as the rear end. When the wire material moves along the reference direction, it will reach this end last. In the embodiments of the present utility model, with the length direction of the wire feeding mechanism 10 as the reference, the direction with the length direction of the wire feeding mechanism 10 as the extension direction is defined as the horizontal direction, that is Figure 1In the X direction shown in the figure, the direction with the height direction of the wire feeding mechanism 10 as the extending direction is defined as the vertical direction, that is, the vertical direction, which is Figure 1 the Y direction shown in the figure. The first bracket 12 has a fixed end connected to the additive manufacturing welding tool 20 and a movable end disposed opposite to the fixed end. The movable end of the first bracket 12 extends away from the additive manufacturing welding tool 20. When the first bracket 12 is not stressed, it maintains a fixed shape. When wire jamming occurs, the pressure exerted by the wire on the first bracket 12 will cause the movable end of the first bracket 12 to elastically deform upward or downward with the fixed end as the base point.
[0025] In some specific examples, the first bracket 12 is configured as a plate-like structure, including a first plate and a second plate. Both the first plate and the second plate are arranged horizontally. Among them, the area of the first plate is larger than that of the second plate, and the first plate is fixedly connected to one side of the additive manufacturing welding tool 20. The second plate and the first plate can be integrally formed, and the second plate extends horizontally away from the additive manufacturing welding tool 20. By connecting the first plate with a larger area to the additive manufacturing welding tool 20, the stability of the installation of the wire feeding nozzle 13 can be improved.
[0026] According to an embodiment of the present invention, referring to Figure 2 、 Figure 3 , the wire feeding mechanism 10 further includes: a second bracket 14. The second bracket 14 is connected to the first bracket 12, and the wire feeding nozzle 13 is rotatably connected to the first bracket 12 through the second bracket 14. By providing the second bracket 14, stable support is provided for the wire feeding nozzle 13, enabling the wire feeding nozzle 13 to rotate smoothly and accurately to the required position.
[0027] According to an embodiment of the present invention, referring to Figure 2 , a vertical chute 141 is provided in the first bracket 12, and the second bracket 14 is slidably installed in the chute 141. The second bracket 14 and the chute 141 can be connected by bolts to facilitate adjusting the position of the second bracket 14 relative to the first bracket 12. Through the limitation of the vertical chute 141, it is possible to facilitate adjusting the overall height of the wire feeding nozzle 13, and further adjust the specific position of the wire feeding nozzle 13 according to actual needs.
[0028] In some specific examples, the first bracket 12 further includes a third plate. The third plate is fixedly connected to the lower end surface of the second plate and is arranged vertically. The sliding groove 141 is formed in the third plate, and a plurality of sliding grooves 141 can be arranged at intervals along the horizontal direction of the third plate. The second bracket 14 is formed with a plurality of vertical strip-shaped grooves, and the plurality of strip-shaped grooves correspond to the plurality of sliding grooves 141 one by one. At least one bolt is arranged in each sliding groove 141. The first bracket 12 and the second bracket 14 are connected by passing the bolt through the sliding groove 141 and the corresponding strip-shaped groove in sequence. By providing a plurality of sliding grooves 141 and a plurality of strip-shaped grooves, the contact area between the first bracket 12 and the second bracket 14 can be increased, thereby improving the connection stability between the first bracket 12 and the second bracket 14.
[0029] According to an embodiment of the present invention, referring to Figure 2 , the second bracket 14 includes a rotating part 142 and a wire feeding part 143. At least a part of the second bracket 14 extends out of the sliding groove 141 to form the rotating part 142. The wire feeding nozzle 13 is installed on the wire feeding part 143, and the wire feeding part 143 is rotatably connected to the rotating part 142 along the horizontal direction. Wherein, the surface of the rotating part 142 facing the wire feeding nozzle 13 is an arc surface, and the wire feeding part 143 is provided with a rotating groove 144 matching the shape of the arc surface, so that the arc surface is fitted in the rotating groove 144.
[0030] Since the wire feeding part 143 is rotatably connected to the rotating part 142 along the horizontal direction, the position of the wire feeding nozzle 13 can be flexibly adjusted according to the processing requirements. The surface of the rotating part 142 facing the wire feeding nozzle 13 is an arc surface, and the wire feeding part 143 is provided with a rotating groove 144 matching the shape of the arc surface. This matching method enables the arc surface to smoothly move in the rotating groove 144 when the wire feeding part 143 adjusts the angle, reducing the shaking or displacement of the wire feeding nozzle 13 caused by unstable connection, thereby improving the stability of the entire wire feeding system.
[0031] In some specific examples, the wire feeding nozzle 13 is installed at one end of the wire feeding part 143 facing the additive manufacturing welding tool 20. A guiding hole is formed at the end of the wire feeding part 143 facing away from the additive manufacturing welding tool 20. The axis of the guiding hole and the axis of the wire feeding nozzle 13 are located on the same straight line. The end of the wire material passes through the guiding hole and enters the wire feeding nozzle 13, and is conveyed to the main shaft of the additive manufacturing welding tool 20 through the wire feeding nozzle 13. And the aperture of the guiding hole is larger than the diameter of the wire material to allow a certain range of adjustment of the wire material in the guiding hole, reducing the friction between the wire material and the wire feeding part 143. Preferably, the aperture of the guiding hole decreases from the end facing away from the wire feeding nozzle 13 to the end adjacent to the wire feeding nozzle 13 to smoothly guide the wire material into the wire feeding nozzle 13.
[0032] According to an embodiment of the present invention, referring to Figure 1 , Figure 2 andFigure 4 , the wire feeder 11 includes: a frame 111, a wire feeding tube 112, a wire guiding nozzle 113, and a transmission mechanism 30. The frame 111 is arranged on one side of the additive manufacturing welding tool 20 to improve the compactness of the overall structural layout. The wire feeding tube 112 is arranged on the frame 111. The wire guiding nozzle 113 is arranged on the frame 111 and is oppositely arranged with the wire feeding tube 112. The transmission mechanism 30 is arranged on the frame 111 and is located between the wire feeding tube 112 and the wire guiding nozzle 113. The end of the wire feeding tube 112 close to the transmission mechanism 30 is aligned with the end of the wire guiding nozzle 113 close to the transmission mechanism 30. The transmission mechanism 30 is used to convey the wire in the wire feeding tube 112 to the wire guiding nozzle 113, avoiding the bending of the wire during the conveying process and improving the stability of the wire conveying process. The wire in the wire guiding nozzle 113 is conveyed to the wire feeding nozzle 13.
[0033] According to an embodiment of the present invention, referring to Figure 1 , Figure 4 , the transmission mechanism 30 includes: two wire feeding wheels 31, a driving member 32. The two wire feeding wheels 31 are axially parallel. The wire passes through between the two wire feeding wheels 31, so that the wire feeding wheels 31 drive the wire to the wire guiding nozzle 113. The driving member 32 is power-coupled to both of the two wire feeding wheels 31 to drive the wire feeding wheels 31 to rotate.
[0034] Specifically, the axes of the two wire feeding wheels 31 are both arranged vertically. The wire passes through the two wire feeding wheels 31. By driving the two wire feeding wheels 31 to rotate through the driving member 32, the wire moves along a predetermined path to the wire guiding nozzle 113 under the clamping and pushing of the two wire feeding wheels 31, ensuring the smoothness of the wire conveying process.
[0035] According to an embodiment of the present invention, referring to Figure 4 , the driving member 32 includes: a driving motor 321 and a first transmission shaft 322. The first transmission shaft 322 is rotatably installed on the frame 111. The input end of the first transmission shaft 322 is power-coupled to the output end of the driving motor 321. The output end of the first transmission shaft 322 is fixedly connected to one of the wire feeding wheels 31. The driving motor 321 is installed on the frame 111. When the driving motor 321 is started, the power generated by it is transmitted to the wire feeding wheel 31 connected to the first transmission shaft 322 through the first transmission shaft 322, driving the wire feeding wheel 31 to rotate to realize the stable conveying of the wire.
[0036] According to an embodiment of the present invention, referring to Figure 1 and Figure 4, the wire feeding wheel 31 includes a guiding portion 311 and a driving portion 312. The driving portion 312 is located at one end of the guiding portion 311 away from the first transmission shaft 322. The guiding portions 311 of the two wire feeding wheels 31 are adapted to clamp the wire. The driving portions 312 of the two wire feeding wheels 31 are configured as gears meshing with each other. The guiding portion 311 is responsible for clamping the wire to ensure its straight travel and stable position during transportation. When one wire feeding wheel 31 receives power from the first transmission shaft 322 and starts to rotate, the power can be directly transmitted to the other wire feeding wheel 31 through the meshing gears to achieve synchronous rotation. Configuring the driving portions 312 of the two wire feeding wheels 31 as gears meshing with each other is conducive to enabling the two wire feeding wheels 31 to rotate at the same speed, avoiding wire twisting or breakage caused by inconsistent rotational speeds of the two wire feeding wheels 31.
[0037] During the wire feeding process, the wire is first fed between the guiding portions 311 of the two wire feeding wheels 31. With the start of the driving motor 321, the power is transmitted to one of the wire feeding wheels 31 through the first transmission shaft 322, and then transmitted to the other wire feeding wheel 31 through the meshing gears. Due to the precise clamping of the guiding portion 311 and the synchronous rotation of the driving portion 312, the wire can move towards the wire guiding nozzle 113 under a stable thrust. Specifically, circumferential guiding grooves are formed on the circumferential surfaces of the two wire feeding wheels 31, and the wire is adapted to the guiding grooves, which can further improve the stability of wire feeding.
[0038] According to an embodiment of the present invention, referring to Figure 4 , the axis of the driving motor 321 is perpendicular to the axis of the first transmission shaft 322.
[0039] The axis of the driving motor 321 is vertically arranged with the axis of the first transmission shaft 322. Usually, bevel gears, belt drives or other types of steering parts 33 are required to convert the movement direction, which helps to save space and make the entire wire feeding system more compact.
[0040] In some specific examples, the drive motor 321 and the first transmission shaft 322 are connected by a steering member 33. The steering member 33 includes: a second transmission shaft 331, a first bevel gear 332, and a second bevel gear 333. The second transmission shaft 331 is rotatably mounted on the frame 111. The axis of the second transmission shaft 331 is perpendicular to the axis of the first transmission shaft 322. The first bevel gear 332 is provided on the second transmission shaft 331, and the second bevel gear 333 is provided on the first transmission shaft 322. The first bevel gear 332 and the second bevel gear 333 are meshed with each other. The output end of the drive motor 321 is power-coupled to the input end of the second transmission shaft 331. When the drive motor 321 is started, the rotational power generated by it is first transmitted to the second transmission shaft 331. Due to the meshing effect of the first bevel gear 332 and the second bevel gear 333, the rotational motion of the second transmission shaft 331 is effectively converted into the rotational motion of the first transmission shaft 322, thereby driving the wire feeding wheel 31 connected to the first transmission shaft 322, not only maintaining high efficiency of power transmission, but also ensuring accuracy and stability of the motion.
[0041] In another example, the second transmission shaft 331 includes a first shaft section and a second shaft section connected to each other. The axes of the first shaft section and the second shaft section are located on the same straight line, and the diameter of the first shaft section is larger than that of the second shaft section. Specifically, the output end of the drive motor 321 is power-coupled to one end of the first shaft section. One end of the second shaft section is fixedly connected to the other end of the first shaft section. The first bevel gear 332 is provided on the second shaft section, and the first bevel gear 332 is adjacent to the first transmission shaft 322. One end of the first shaft section has a keyway. The output end of the drive motor 321 is connected to the keyway by a spline. Moreover, the length of the output end of the drive motor 321 located within the keyway is less than the depth of the keyway, so that there is a clearance between the output end of the drive motor 321 and the groove wall of the keyway close to the second shaft section. The second shaft section is provided with a load bearing, and the load bearing abuts against the other end of the first shaft section.
[0042] When wire jamming occurs and the resistance is large, the load bearing will be slightly deformed. At this time, the clearance absorbs the deformation of the load bearing, avoiding the direct action of the wire jamming resistance on the output end of the drive motor 321.
[0043] According to an embodiment of the present invention, a Hall sensor is provided on the spindle bushing of the additive manufacturing welding tool 20, and a magnetic block is installed on the tool handle of the additive manufacturing welding tool 20. The position of the magnetic block is consistent with the position where the additive manufacturing welding tool 20 cuts the welding wire. When the Hall sensor senses the magnetic block, the wire feeding stops; when the Hall sensor is away from the magnetic block, the wire feeding starts. The Hall sensor can also be replaced with a proximity sensor, a position sensor, etc. to achieve this function.
[0044] The utility model is provided with a first bracket 12 adapted to elastically deform vertically. When there is no external force, the first bracket 12 remains in its natural state, that is, a fixed shape. When wire jamming occurs and the wire acts on the first bracket 12, the first bracket 12 can adaptively deform, that is, the first bracket 12 can deform upward or downward to absorb the deformation resistance and reduce the wire stress at the same time. When wire feeding is normal, the first bracket 12 can recover from deformation, which is convenient for absorbing stress next time. It should be noted that the elastic deformation of the first bracket 12 occurs within the elastic range of its material. In addition, the wire feeding nozzle 13 is adapted to rotate in the horizontal direction and can adaptively change, that is, as the wire is fed, the wire feeding nozzle 13 can rotate with the axis in the horizontal direction as the rotation axis, so that the end of the wire feeding nozzle 13 for outputting the wire approaches or moves away from the additive manufacturing welding tool 20 to avoid wire jamming. Therefore, even if the additive manufacturing welding tool 20 cuts the wire intermittently, the wire feeding mechanism 10 of the utility model can adaptively deform to prevent wire jamming and improve the smoothness of wire feeding.
[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0046] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.
Claims
1. A friction stir additive manufacturing device, characterized in that, Including: A wire feeding mechanism (10) and an additive manufacturing welding tool (20); The wire feeding mechanism (10) includes: A wire feeder (11), which is adapted to drive a wire to be fed to the additive manufacturing welding tool (20); A first bracket (12), which is located at the rear end of the wire feeder (11), and the first bracket (12) is adapted to elastically deform vertically; A wire feeding nozzle (13), which is located at the rear end of the first bracket (12), and the wire feeding nozzle (13) is adapted to rotate horizontally, and one end of the wire feeding nozzle (13) extends obliquely towards the main axis of the additive manufacturing welding tool (20).
2. The friction stir additive manufacturing equipment according to claim 1, characterized in that The wire feeding mechanism (10) further includes: A second bracket (14), which is connected to the first bracket (12), and the wire feeding nozzle (13) is rotatably connected to the first bracket (12) through the second bracket (14).
3. The friction stir additive manufacturing equipment according to claim 2, characterized in that, A vertical chute (141) is provided in the first bracket (12), and the second bracket (14) is slidably installed in the chute (141).
4. The friction stir additive manufacturing equipment according to claim 3, characterized in that, The second bracket (14) includes: A rotating part (142), at least part of the second bracket (14) extends out of the chute (141) to form the rotating part (142); A wire feeding part (143), the wire feeding nozzle (13) is installed on the wire feeding part (143), and the wire feeding part (143) is rotatably connected to the rotating part (142) in the horizontal direction. Among them, the surface of the rotating part (142) facing the wire feeding nozzle (13) is an arc surface, and the wire feeding part (143) is provided with a rotating groove (144) matching the shape of the arc surface, so that the arc surface is fitted in the rotating groove (144).
5. The friction stir additive manufacturing equipment according to claim 1, wherein, The wire feeder (11) includes: A frame (111), which is provided on one side of the additive manufacturing welding tool (20); A wire feeding pipe (112), which is provided on the frame (111); A wire guiding nozzle (113), which is provided on the frame (111) and is arranged opposite to the wire feeding pipe (112); A transmission mechanism (30), which is provided on the frame (111) and is located between the wire feeding pipe (112) and the wire guiding nozzle (113), and the transmission mechanism (30) is used to convey the wire in the wire feeding pipe (112) to the wire guiding nozzle (113), and the wire in the wire guiding nozzle (113) is conveyed to the wire feeding nozzle (13).
6. The friction stir additive manufacturing device according to claim 5, characterized in that, The transmission mechanism (30) includes: Two wire feeding wheels (31), the two wire feeding wheels (31) are axially parallel, and the wire passes between the two wire feeding wheels (31), so that the wire feeding wheels (31) drive the wire to the wire guiding nozzle (113); A driving member (32), the driving member (32) is power-coupled to both of the two wire feeding wheels (31) to drive the wire feeding wheels (31) to rotate.
7. The friction stir additive manufacturing equipment according to claim 6, characterized in that, The driving member (32) includes: A driving motor (321); The first transmission shaft (322), the first transmission shaft (322) is rotatably mounted on the frame (111), the input end of the first transmission shaft (322) is power-coupled to the output end of the drive motor (321), and the output end of the first transmission shaft (322) is fixedly connected to one of the wire feeding wheels (31).
8. The friction stir additive manufacturing equipment according to claim 7, characterized in that, The wire feeding wheel (31) includes a guiding portion (311) and a driving portion (312), the driving portion (312) is located at an end of the guiding portion (311) away from the first transmission shaft (322), the guiding portions (311) of the two wire feeding wheels (31) are adapted to clamp the wire, and the driving portions (312) of the two wire feeding wheels (31) are configured as gears meshing with each other.
9. The friction stir additive manufacturing equipment according to claim 7, characterized in that The drive motor (321) is connected to the first transmission shaft (322) through a steering member (33), and the steering member (33) includes: A second transmission shaft (331), the second transmission shaft (331) is rotatably mounted on the frame (111), the axis of the second transmission shaft (331) is perpendicular to the axis of the first transmission shaft (322), the second transmission shaft (331) includes a connected first shaft section and a second shaft section, the diameter of the first shaft section is larger than the diameter of the second shaft section, one end of the first shaft section has a keyway, the output end of the drive motor (321) is connected to the keyway through a spline, and the length of the output end of the drive motor (321) located in the keyway is less than the depth of the keyway; A first bevel gear (332), the first bevel gear (332) is provided on the second shaft section; A second bevel gear (333), the second bevel gear (333) is provided on the first transmission shaft (322), and the first bevel gear (332) meshes with the second bevel gear (333).