High-strength aluminum alloy laser additive manufacturing supporting structure

Abstract

The utility model discloses a high-strength aluminum alloy laser additive manufacturing supporting structure which comprises an equipment body, supporting bases are arranged at the four corners of the lower portion of the equipment body, a supporting column is arranged at the center of the equipment body, and a plurality of sliding grooves are formed in the positions, on the circumferential surface of the outer side of the supporting column, of the equipment body. A plurality of sliding grooves are formed in the equipment body, clamping blocks are arranged in the sliding grooves, a moving groove is formed in the supporting column, the supporting column is coaxially provided with a supporting plate, the supporting plate is arranged in the moving groove, a fixing frame is arranged below the equipment body, a telescopic air cylinder is fixedly arranged on the fixing frame, the output end of the telescopic air cylinder is connected with a transmission mechanism, and the transmission mechanism is connected with the clamping blocks. The telescopic air cylinder drives the transmission mechanism to expand and contract, so that the transmission mechanism drives the clamping block to reciprocate in the sliding groove, the clamping block supports the thin-wall part, the phenomenon that the thin-wall part deforms due to the fact that thermal stress of the thin-wall part is too large is avoided, and the supporting effect of the supporting structure is improved.

Description

Technical Field

[0001] This utility model belongs to the field of thin-walled parts processing support technology, specifically relating to a high-strength aluminum alloy laser additive manufacturing support structure. Background Technology

[0002] The support structure in high-strength aluminum alloy laser additive manufacturing refers to the support structure added during laser additive manufacturing to ensure the successful manufacturing of parts and to avoid deformation and stress concentration during the manufacturing process. Due to the large thermal stress during the laser selective melting and forming process of high-strength alloy structures, the probability of deformation of the formed parts caused by uneven thermal balance is greater compared to the forming of other metal powders.

[0003] In existing technologies, the support structures for laser additive manufacturing of high-strength aluminum alloys mainly employ free support in each region. Due to the differences in the support structures and their uneven quantity in each region, large temperature differences occur, leading to part deformation caused by uneven thermal stress and making it impossible to guarantee the normal forming of the structure. To address this, the unevenness of thermal stress can generally be reduced by optimizing the layout, shape, and density of the support structure, especially for thin-walled annular parts. In existing technologies, when supporting thin-walled parts, the support structure is generally added gradually according to the geometry of the part and the manufacturing process to reduce the pressure on the thin-walled part. However, removing the support structure after the part is manufactured is a very complex process. Removing the support structure may affect the surface quality of the workpiece, and improper operation may even damage the part itself. Utility Model Content

[0004] The purpose of this invention is to provide a high-strength aluminum alloy laser additive manufacturing support structure to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-strength aluminum alloy laser additive manufacturing support structure, comprising a device body, support seats at the four corners of the device body, a support column at the center of the device body, and multiple sliding grooves on the outer circumferential surface of the support column of the device body, each of the multiple sliding grooves containing a clamping block, the support column penetrating the device body and having a moving groove on it, a support plate coaxially mounted on the support column, the support plate being disposed within the moving groove, a fixed frame below the device body, a telescopic cylinder fixedly mounted on the fixed frame, the output end of the telescopic cylinder being connected to a transmission mechanism, and the transmission mechanism being connected to the clamping block, the telescopic cylinder driving the transmission mechanism to expand and contract, thereby the transmission mechanism driving the clamping block to reciprocate within the sliding groove, thus enabling the clamping block to support the thin-walled part.

[0006] Preferably, the transmission mechanism includes a rotating plate, connecting rods, and a moving block. The rotating plate is coaxially arranged with the support column and is rotatably mounted on the support column. Connecting rods are rotatably connected to the four corners of the rotating plate. A moving block is connected to one end of each connecting rod. The moving block is disposed in a sliding groove and is fixedly connected to a clamping block.

[0007] Preferably, a clamping plate is fixedly connected above the clamping block, and an inclined surface is provided at the connection between the clamping block and the clamping plate. When the clamping block moves, the inclined surface will cause the support plate to adhere to the surface of the clamping plate.

[0008] Preferably, the clamping plate is provided with a plurality of fixing posts arranged in a linear array, and each fixing post is provided with a mounting hole. A connecting spring is provided in the mounting hole, one end of the connecting spring is fixedly connected to the bottom surface of the mounting hole, and the other end of the connecting spring is connected to a support rod.

[0009] Preferably, the support plate is rotatably mounted on the support column, and the support plate and the support column are detachably connected, so that the support plate can be replaced according to the size of the thin-walled part.

[0010] The technical effects and advantages of this utility model are as follows: Different diameter support plates can be replaced according to the different sizes of thin-walled parts, thus facilitating better support for the thin-walled parts. When processing of the thin-walled part begins, the extension of the telescopic cylinder drives the retraction of the transmission mechanism, causing the transmission mechanism to move the clamping block within the sliding groove. This allows the clamping plate above the clamping block to fit against the circumferential surface of the support plate. The support rods on the clamping plate slide within the mounting holes, allowing them to fit against the surface of the part for support. This prevents excessive internal thermal stress in the thin-walled part from causing deformation, thereby improving the support effect of the support structure. Furthermore, since the clamping plates are positioned around the support plate, multiple clamping plates evenly support the part, and the multiple support rods on the clamping plates provide multi-point support to the part surface, preventing uneven support force that could lead to twisting and deformation. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a bottom view of the overall structure of this utility model;

[0013] Figure 3 This is a half-sectional view of the overall structure of this utility model;

[0014] Figure 4 This is a schematic diagram of the overall structure of the clamping block and clamping plate of this utility model.

[0015] In the picture:

[0016] 1. Equipment body; 11. Support base; 12. Support column; 121. Moving groove; 13. Sliding groove; 2. Support plate; 3. Fixed frame; 31. Telescopic cylinder; 4. Transmission mechanism; 41. Rotating plate; 42. Connecting rod; 43. Moving block; 5. Clamping block; 51. Inclined surface; 52. Clamping plate; 53. Fixed column; 531. Mounting hole; 54. Connecting spring; 55. Support rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] This utility model provides, for example Figures 1 to 4 The high-strength aluminum alloy laser additive manufacturing support structure shown includes a device body 1, support seats 11 at the four corners of the device body 1, a support column 12 at the center of the device body 1, and multiple sliding grooves 13 on the outer circumferential surface of the device body 1 on the support column 12. Each sliding groove 13 contains a clamping block 5. The support column 12 passes through the device body 1 and has a moving groove 121. A support plate 2 is coaxially arranged on the support column 12 and is located in the moving groove 121. A fixed frame 3 is located below the device body 1, and a telescopic cylinder 31 is fixedly mounted on the fixed frame 3. The output end of the telescopic cylinder 31 is connected to a transmission mechanism 4, which is connected to the clamping block 5. The telescopic cylinder 31 drives the transmission mechanism 4 to expand and contract, thereby driving the clamping block 5 to reciprocate within the sliding groove 13, so that the clamping block 5 supports the thin-walled part.

[0019] Specifically, the transmission mechanism 4 includes a rotating plate 41, a connecting rod 42, and a moving block 43. The rotating plate 41 is coaxially arranged with the support column 12 and is rotatably mounted on the support column 12. The four corners of the rotating plate 41 are rotatably connected to the connecting rod 42. One end of the connecting rod 42 is connected to the moving block 43. The moving block 43 is arranged in the sliding groove 13 and is fixedly connected to the clamping block 5.

[0020] Specifically, a clamping plate 52 is fixedly connected above the clamping block 5, and an inclined surface 51 is provided at the connection between the clamping block 5 and the clamping plate 52. When the clamping block 5 moves, the support plate 2 is attached to the surface of the clamping plate 52 through the inclined surface 51.

[0021] Specifically, the clamping plate 52 is linearly arrayed with multiple fixing posts 53, and each fixing post 53 is provided with a mounting hole 531. A connecting spring 54 is provided in the mounting hole 531. One end of the connecting spring 54 is fixedly connected to the bottom surface of the mounting hole 531, and the other end of the connecting spring 54 is connected to a support rod 55.

[0022] Specifically, the support plate 2 is rotatably mounted on the support column 12, and the support plate 2 and the support column 12 are detachably connected, so that the support plate 2 can be replaced according to the size of the thin-walled part.

[0023] Working Principle: During the laser additive manufacturing of high-strength aluminum alloy, after the bottom of the part is formed, the operator activates the telescopic cylinder 31. The telescopic cylinder 31 extends and drives any moving block 43 to move within the sliding groove 13. At this time, the moving block 43 drives the rotating plate 41 to rotate via the connecting rod 42. Since the connecting rod is V-shaped, when the moving block 43 moves, the rotating rod is squeezed by the moving block 43, thereby driving the rotating plate 41 to rotate. The rotation of the rotating plate drives the remaining moving blocks 43 to move within the sliding groove. At this time, the clamping block 5 on the moving block 43 moves within the sliding groove 13. Utilizing the inclined surface 51 on the clamping block 5, when the clamping block 5 moves towards the support plate 2, the inclined surface 51 on the clamping block 5 can fit against the bottom surface of the support plate 2. As the clamping block 5 continues to move, the inclined surface 51 on the clamping block 5 causes the support plate 2 to move on the support column 12. When the support rod 55 contacts the bottom of the formed part, the movement of the cylinder stops. As other parts of the part are processed, the support plate 2 on the clamping plate 52 can support the circumferential surface of the thin-walled part, avoiding excessive thermal stress on the thin-walled part and thus preventing deformation. This improves the support effect of the support structure. At the same time, the support rod 55 is connected to the bottom of the mounting hole 531 through the connecting spring 54. The addition of the spring can provide an adjustable flexible support. This design allows the support structure to adapt to different thermal deformations, avoiding stress concentration or indentation on the surface of the part caused by excessive rigidity of the support, thereby further improving the support effect of the support structure.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength aluminum alloy laser additive manufacturing support structure, comprising a device body (1), wherein support seats (11) are provided at the four corners below the device body (1), characterized in that, A support column (12) is provided at the center of the equipment body (1), and multiple sliding grooves (13) are provided on the outer circumferential surface of the support column (12). Each of the multiple sliding grooves (13) is provided with a clamping block (5). The support column (12) is provided through the equipment body (1), and a moving groove (121) is provided on the support column (12). A support plate (2) is coaxially provided on the support column (12), and the support plate (2) is provided in the moving groove (121). A fixed frame (3) is provided below the equipment body (1), and a telescopic cylinder (31) is provided on the fixed frame (3). The output end of the telescopic cylinder (31) is connected to a transmission mechanism (4), and the transmission mechanism (4) is connected to the clamping block (5). The telescopic cylinder (31) drives the transmission mechanism (4) to expand and contract, so that the transmission mechanism (4) drives the clamping block (5) to reciprocate in the sliding groove (13), so that the clamping block (5) supports the thin-walled part.

2. The high-strength aluminum alloy laser additive manufacturing support structure according to claim 1, characterized in that: The transmission mechanism (4) includes a rotating plate (41), a connecting rod (42) and a moving block (43). The rotating plate (41) is coaxially arranged with the support column (12) and the rotating plate (41) is rotatably arranged on the support column (12). The four corners of the rotating plate (41) are rotatably connected to the connecting rod (42). One end of the connecting rod (42) is connected to the moving block (43). The moving block (43) is arranged in the sliding groove (13) and is fixedly connected to the clamping block (5).

3. The high-strength aluminum alloy laser additive manufacturing support structure according to claim 1, characterized in that: A clamping plate (52) is fixedly connected above the clamping block (5). An inclined surface (51) is provided at the connection between the clamping block (5) and the clamping plate (52). When the clamping block (5) moves, the support plate (2) is attached to the clamping plate (52) through the inclined surface (51).

4. The high-strength aluminum alloy laser additive manufacturing support structure according to claim 3, characterized in that: The clamping plate (52) is provided with a linear array of multiple fixing posts (53), and each fixing post (53) is provided with a mounting hole (531). A connecting spring (54) is provided in the mounting hole (531). One end of the connecting spring (54) is fixedly connected to the bottom surface of the mounting hole (531), and the other end of the connecting spring (54) is connected to a support rod (55).

5. The high-strength aluminum alloy laser additive manufacturing support structure according to claim 1, characterized in that: The support plate (2) is rotatably mounted on the support column (12), and the support plate (2) and the support column (12) are detachably connected, so that the support plate (2) can be replaced according to the size of the thin-walled part.

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