An adaptive fixture for curved surface machining of an aeronautical 3D printed part

Abstract

The utility model discloses a kind of self-adaptive clamps for aviation 3D printing piece curved surface processing, belong to self-adaptive clamps technical field, it includes bottom plate, the bottom plate both sides are connected with side plate, multiple threaded bushings are connected with equal interval on the bottom plate, threaded rod is threadedly connected in the threaded bushing.The self-adaptive clamp for aviation 3D printing piece curved surface processing, printing piece curved surface is contacted with multiple suction cups, and force is applied downward, at this time movable column will be slid into to hollow column and compress spring, and universal ball joint will also be movable in fixed block, so that the height and angle of suction cup adapt to printing piece curved surface, and then adhere to contact with curved surface, then make electromagnetic plate produce magnetic attraction and hold movable column, prevent movable column from accidentally moving up, then by vacuum pump outside on rubber tube, make vacuum pump separate hollow cylinder and the air in suction cup, so that suction cup can be adsorbed and fixed printing piece, strong applicability, it is convenient for actual use processing.

Description

Technical Field

[0001] This utility model belongs to the field of adaptive fixture technology, specifically an adaptive fixture for machining curved surfaces of aerospace 3D printed parts. Background Technology

[0002] 3D printing is a technology that builds three-dimensional solids by stacking materials such as plastics, metals, and resins layer by layer. It is widely used in industrial manufacturing, medical and health, architecture and art, and consumer electronics. However, 3D printed parts are mostly complex structures, irregular shapes, and curved surfaces. When processing the printed parts, it is necessary to customize the fixtures according to the shape of the printed parts. Such fixtures are expensive to manufacture and have low applicability, which affects the actual processing progress. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides an adaptive fixture for machining curved surfaces of aerospace 3D printed parts. It solves the problem that most printed parts are complex in structure, irregular in shape, and mostly curved. When machining printed parts, it is necessary to customize fixtures according to the shape of the printed parts. Such fixtures are costly to manufacture and have low applicability, which affects the actual machining process.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adaptive fixture for machining curved surfaces of aerospace 3D printed parts, comprising a base plate, side plates connected to both sides of the base plate, a plurality of threaded sleeves connected at equal intervals on the base plate, a threaded rod connected to the threaded sleeve by an internal thread, a patterned cap connected to one end of the threaded rod, a hollow column threaded through the base plate to the other end of the threaded rod, a connecting plate connected to one end of the hollow column, and a plurality of connecting strips connected to the surface wall of the hollow column;

[0005] Both the hollow column and the connecting plate have multiple connecting slots. A spring is connected inside the hollow column. One end of the spring is connected to a movable column. One end of the movable column is connected to a fixed block. A universal ball joint is movably installed on the fixed block. A hollow cylinder is connected to the universal ball joint. A suction cup is connected to one end of the hollow cylinder. Multiple electromagnetic plates are connected to the bottom of the connecting plate via cables.

[0006] As a further embodiment of this utility model: an elongated hole is provided on the side plate, and the bottom plate and the side plates on both sides together form a U-shaped design.

[0007] As a further embodiment of this utility model: both the hollow column and the movable column are hexagonal in design, and a threaded hole is provided at the bottom of the hollow column, which is threadedly engaged with the threaded rod.

[0008] As a further embodiment of this utility model: both the connecting strip and the connecting groove are T-shaped designs, and there are three connecting strips and three connecting grooves, which are alternately distributed on the hexagonal outer wall of the hollow column, and the connecting strip and the connecting groove are slidably engaged.

[0009] As a further embodiment of this utility model: a power connection is provided above the connecting plate, and six electromagnetic plates are arranged in a centrally symmetrical manner and embedded in the inner wall of the hollow column.

[0010] As a further embodiment of this utility model: a rubber tube is connected to one side of the hollow cylinder, and the movable column is made of metal and slides inside the hollow cylinder and contacts the inner wall of the hollow cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This adaptive fixture for machining curved surfaces of 3D-printed aerospace parts uses a combination of a hollow column, a movable column, a spring, an electromagnetic plate, a hollow cylinder, and suction cups. The curved surface of the printed part contacts multiple suction cups, and downward force is applied. The movable column slides into the hollow column and compresses the spring, while the universal joint moves within the fixed block. This allows the height and angle of the suction cups to adapt to the curved surface of the printed part, ensuring close contact. The electromagnetic plate then magnetically attracts the movable column, preventing accidental upward movement. An external vacuum pump connected to a rubber tube removes air from the hollow cylinder and suction cups, allowing the suction cups to adhere and fix the curved surface of the printed part. This fixture is highly versatile and convenient for practical processing.

[0013] 2. This adaptive fixture for machining curved surfaces of aerospace 3D printed parts features connecting strips, connecting grooves, threaded rods, patterned caps, and threaded holes. Multiple hollow columns are connected together by pushing the connecting strips into the connecting grooves, forming a honeycomb pattern. The hollow columns are then placed on a base plate, aligning the threaded rods with the threaded holes. The threaded rods are then rotated using the patterned caps to enter the threaded holes, thus fixing the hollow columns to the base plate. No tools are required, making operation simple. Furthermore, the modular design allows workers to easily combine and arrange components according to the shape and size of the printed parts, improving its applicability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the base plate of this utility model;

[0016] Figure 3 This is a schematic diagram of the hollow column three-dimensional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the hollow column and hollow cylinder of this utility model;

[0018] Figure 5 This is a schematic diagram of the cross-sectional structure of the fixing block of this utility model;

[0019] In the diagram: 1. Base plate; 2. Side plate; 3. Threaded sleeve; 4. Threaded rod; 5. Patterned cap; 6. Hollow column; 7. Connecting plate; 8. Connecting strip; 9. Connecting groove; 10. Spring; 11. Movable column; 12. Fixing block; 13. Universal ball joint; 14. Hollow cylinder; 15. Suction cup; 16. Electromagnetic plate; 17. Long hole; 18. Threaded hole; 19. Power wiring; 20. Rubber hose. Detailed Implementation

[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0021] like Figure 1-5 As shown, this utility model provides a technical solution: an adaptive fixture for machining curved surfaces of aerospace 3D printed parts, including a base plate 1, with side plates 2 connected to both sides of the base plate 1. The side plates 2 have elongated holes 17. The base plate 1 and the side plates 2 together form a U-shaped design. By screwing bolts into the elongated holes 17, the base plate 1 can be connected to the worktable. Compared with a single hole, the elongated holes 17 make it easier for the operator to adjust the relative positions of the side plates 2 and the base plate 1 and the worktable, and have high compatibility.

[0022] Multiple threaded sleeves 3 are connected at equal intervals on the base plate 1. Threaded rods 4 are connected to the threaded sleeves 3 by internal threads. One end of the threaded rod 4 is connected to a patterned cap 5, and the other end of the threaded rod 4 passes through the base plate 1 and is threaded to a hollow column 6. Both the hollow column 6 and the movable column 11 are hexagonal in design. A threaded hole 18 is opened at the bottom of the hollow column 6. The threaded hole 18 is threadedly engaged with the threaded rod 4. Through the threaded connection between the threaded rod 4 and the threaded hole 18, the operator can complete the installation and fixation of the hollow column 6 simply by turning the threaded rod 4, making the operation simple.

[0023] A connecting plate 7 is connected to one end of a hollow column 6. Multiple connecting strips 8 are connected to the outer wall of the hollow column 6. Multiple connecting grooves 9 are opened on both the hollow column 6 and the connecting plate 7. Both the connecting strips 8 and the connecting grooves 9 are T-shaped. There are three connecting strips 8 and three connecting grooves 9, and the three connecting strips 8 and three connecting grooves 9 are alternately distributed on the hexagonal outer wall of the hollow column 6. The connecting strips 8 and the connecting grooves 9 slide together. Through the sliding cooperation of the connecting strips 8 and the connecting grooves 9, it is convenient for workers to combine multiple hollow columns 6 together to achieve modular cooperation. The T-shaped design of the connecting strips 8 and the connecting grooves 9 can achieve multi-directional limiting and prevent misalignment.

[0024] A spring 10 is connected inside the hollow column 6. One end of the spring 10 is connected to a movable column 11, and one end of the movable column 11 is connected to a fixed block 12. A universal ball joint 13 is movably installed on the fixed block 12. A hollow cylinder 14 is connected to the universal ball joint 13. A suction cup 15 is connected to one end of the hollow cylinder 14, and a rubber tube 20 is connected to one side of the hollow cylinder 14. The movable column 11 is made of metal and slides inside the hollow column 6, contacting the inner wall of the hollow column 6. The metal material of the movable column 11 allows the electromagnetic plate 16 to attract the movable column 11, thereby preventing the movable column 11 from sliding accidentally. The spring 10 can push the movable column 11 by rebounding, realizing the reset of the movable column 11 after the magnetic force of the electromagnetic plate 16 disappears.

[0025] Multiple electromagnetic plates 16 are connected to the bottom of the connecting plate 7 via cables, and a power connection 19 is connected to the top of the connecting plate 7. The six electromagnetic plates 16 are arranged in a centrally symmetrical manner and embedded in the inner wall of the hollow column 6. The multiple electromagnetic plates 16 simultaneously attract each surface of the hexagonal movable column 11, thereby improving the stability of the attraction and fixation.

[0026] The working principle of this utility model is as follows:

[0027] During installation, the worker places the hollow column 6 on the base plate 1, aligning the threaded hole 18 with the threaded rod 4. Then, by rotating the threaded rod 4 using the patterned cap 5, the threaded rod 4 enters the threaded hole 18, thus fixing the hollow column 6 to the base plate 1. The worker then pushes the connecting strip 8 into the connecting groove 9, causing multiple hollow columns 6 to connect and combine together. The multiple connected hollow columns 6 are arranged in a honeycomb pattern, achieving modular assembly. Finally, multiple power connectors 19 are connected to an external power source, and the vacuum pump is connected to multiple rubber hoses 20 through pipes. When fixing the printed part, the curved surface of the printed part is brought into contact with multiple suction cups 15 and a downward force is applied, causing the movable column 11 to slide into the hollow column 6 and compress the spring 10. At the same time, the universal ball joint 13 is also pushed and moves within the fixing block 12, so that the height and angle of the suction cup 15 adapt to the curved surface of the printed part and thus fit into contact with the curved surface. Then, the electromagnetic plate 16 generates magnetism to attract the movable column 11 and prevent the movable column 11 from moving upward accidentally. Then, the air inside the hollow cylinder 14 and the suction cup 15 is extracted by the vacuum pump, so that the suction cup 15 can attract and fix the printed part.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. An adaptive fixture for machining curved surfaces of aerospace 3D printed parts, comprising a base plate (1), characterized in that: The base plate (1) is connected to side plates (2) on both sides. Multiple threaded sleeves (3) are connected at equal intervals on the base plate (1). A threaded rod (4) is threaded inside the threaded sleeve (3). A patterned cap (5) is connected to one end of the threaded rod (4). The other end of the threaded rod (4) passes through the base plate (1) and is threaded to a hollow column (6). A connecting plate (7) is connected to one end of the hollow column (6). Multiple connecting strips (8) are connected to the surface of the hollow column (6). Multiple connecting slots (9) are provided on both the hollow column (6) and the connecting plate (7). A spring (10) is connected inside the hollow column (6). One end of the spring (10) is connected to a movable column (11). One end of the movable column (11) is connected to a fixed block (12). A universal ball joint (13) is movably installed on the fixed block (12). A hollow cylinder (14) is connected to the universal ball joint (13). A suction cup (15) is connected to one end of the hollow cylinder (14). Multiple electromagnetic plates (16) are connected to the bottom of the connecting plate (7) via cables.

2. The adaptive fixture for machining curved surfaces of aerospace 3D printed parts according to claim 1, characterized in that: The side plate (2) has an elongated hole (17), and the bottom plate (1) and the side plates (2) on both sides together form a U-shaped design.

3. The adaptive fixture for machining curved surfaces of aerospace 3D printed parts according to claim 1, characterized in that: Both the hollow column (6) and the movable column (11) are hexagonal in design. A threaded hole (18) is provided at the bottom of the hollow column (6), and the threaded hole (18) is threadedly engaged with the threaded rod (4).

4. The adaptive fixture for machining curved surfaces of aerospace 3D printed parts according to claim 1, characterized in that: Both the connecting strip (8) and the connecting groove (9) are T-shaped designs. There are three connecting strips (8) and three connecting grooves (9), and the three connecting strips (8) and three connecting grooves (9) are alternately distributed on the hexagonal outer wall of the hollow column (6). The connecting strips (8) and the connecting grooves (9) are in sliding fit.

5. An adaptive fixture for machining curved surfaces of aerospace 3D printed parts according to claim 1, characterized in that: The wiring board (7) is connected to a power connection (19) above it, and six electromagnetic plates (16) are arranged in a centrally symmetrical manner and embedded in the inner wall of the hollow column (6).

6. An adaptive fixture for machining curved surfaces of aerospace 3D printed parts according to claim 1, characterized in that: A rubber tube (20) is connected to one side of the hollow cylinder (14), and the movable column (11) is made of metal and slides inside the hollow column (6) and contacts the inner wall of the hollow column (6).

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