Selective laser melting support adding system

Abstract

The utility model discloses a selective laser melting supporting adding system which comprises a base material, supporting pieces, a part, a solid piece, inner piece bodies, a supporting rod and a connecting plate, the supporting pieces are arranged on the surface of the base material, and the inner piece bodies are fixed between the piece bodies of the supporting pieces. Large-area upward growth of a base material is changed into upward growth of supporting sheets from the base material, an inner sheet body grows between the supporting sheets, meanwhile, grooves are formed in the opposite sheet bodies, close to the upper ends, of the supporting sheets, when the supporting sheets grow to the part forming preparation position, equipment is opened, a solid sheet is added below the part plane, and the part continues to grow on the solid sheet; after the part is formed, the surface quality of the part is guaranteed by cutting off solid pieces through machining, the support design scheme is optimized, large-area addition of blocky supports is avoided, and the material cost and the forming time are saved.

Description

Technical Field

[0001] This utility model relates to the field of additive manufacturing technology for laser selective melting equipment, and in particular to a laser selective melting support addition system. Background Technology

[0002] Laser selective melting (SLM) technology, as a novel material preparation technology, is widely used in aerospace and other fields. During the forming process, since most parts have suspended structures, direct forming may result in problems such as warping and deformation. Therefore, the addition of supports is crucial in the part forming process, and a reasonable support scheme can directly affect part forming and control costs.

[0003] In the additive manufacturing process of laser selective melting equipment, most supports are a combination of grid supports and solid supports. In order to ensure their firmness, the supports need to grow upward from the substrate over a large area, which not only wastes materials but also greatly increases the forming time. To address this, we propose a laser selective melting support addition system. Utility Model Content

[0004] The main objective of this invention is to provide a laser selective melting support addition system. During the additive manufacturing process of parts in a laser selective melting device, instead of allowing the substrate to grow upwards over a large area, support sheets grow upwards from the substrate. Inner sheets grow between the support sheets, and grooves are provided at the opposing sheets near the upper end of the support sheets. When the support sheets grow to the part's ready-to-be-formed position, the device opens and adds a solid sheet below the part's plane. The part continues to grow on the solid sheet. After the part is formed, the solid sheet is removed by machining to ensure the part's surface quality. This invention optimizes the support design, avoids adding large-area block supports, saves material costs and forming time, and effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A laser selective melting support addition system includes a substrate, support sheets, parts, solid sheets, inner sheets, support rods, and connecting plates. Support sheets are arranged on the surface of the substrate, and inner sheets are fixed between the sheets of the support sheets. Grooves for mounting solid sheets are formed between opposing support sheets above the inner sheets. Parts are supported on the surface of the solid sheets. Support rods are inserted between the inner sheets and the support sheets, and connecting plates are fixed to the rods that protrude from the rod ends of the support sheets.

[0007] Furthermore, symmetrical support holes are provided between the inner sheet and the support sheet, and support rods are inserted into the support holes;

[0008] By adopting the above technical solution, the inner sheet and the support sheet are supported by inserting support rods through support holes.

[0009] Furthermore, a handle is fixed to the outer plate surface of the connecting plate away from the support rod, and the handle plate is an L-shaped handle plate;

[0010] By adopting the above technical solution, holding the handle can pull the connecting plate and the support rod out from the inner plate and the support plate.

[0011] Furthermore, the groove cavity is a triangular elongated groove cavity, and triangular pieces on both sides of the solid piece are inserted into the groove;

[0012] By adopting the above technical solution, the triangular piece of the solid sheet can be fitted and connected in the groove cavity, ensuring that the solid sheet can provide effective support for the part.

[0013] Furthermore, the inner sheet is arranged and fixed in four groups among the three groups of sheets of the support sheet;

[0014] By adopting the above technical solution, the three sets of support plates obtain stable support through a large number of inner plates.

[0015] Furthermore, the length of the substrate is greater than the length of the support sheet;

[0016] By adopting the above technical solution, the longer plate of the substrate can support the support sheet to be printed and grown on its own plate surface.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention optimizes the support design by replacing the large-area upward growth of the substrate with the upward growth of support sheets during the additive manufacturing process of laser selective melting equipment. The support sheets grow into inner sheets between each other, and grooves are set at the opposite sheets near the upper end of the support sheets. When the support sheets grow to the position where the part is ready to be formed, the equipment opens and adds a solid sheet below the part plane. The part continues to grow on the solid sheet. After the part is formed, the solid sheet is removed by machining to ensure the surface quality of the part. This invention optimizes the support design, avoids adding large-area block supports, and saves material costs and forming time.

[0019] Furthermore, support holes are provided between the support sheet and the inner sheet for inserting support rods, so that there is effective internal support between the grown support sheet and the inner sheet, thereby improving the support strength of the support sheet. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a laser selective melting support addition system according to the present invention.

[0021] Figure 2This is a schematic diagram showing the disassembled parts and solid sheet of a laser selective melting support addition system according to this utility model.

[0022] Figure 3 This is an exploded view of a laser selective melting support addition system according to the present invention.

[0023] In the diagram: 1. Substrate; 2. Support plate; 3. Part; 4. Groove; 5. Solid plate; 6. Inner plate; 7. Support hole; 8. Support rod; 9. Connecting plate; 10. Pull handle. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-3 As shown, a laser selective melting support addition system includes a substrate 1, support plates 2, parts 3, solid plates 5, inner plates 6, support rods 8, and connecting plates 9. Support plates 2 are arranged on the surface of the substrate 1, and inner plates 6 are fixed between the plates of the support plates 2. Grooves 4 for mounting solid plates 5 are formed between the opposing plates of the support plates 2 above the inner plates 6. Parts 3 are supported on the surface of the solid plates 5. Support rods 8 are inserted between the inner plates 6 and the support plates 2, and the connecting plates 9 are fixed to the rods 8 protruding from the rod heads of the support plates 2.

[0026] Among them, the inner sheet 6 and the support sheet 2 are symmetrically provided with support holes 7, and the support rods 8 are inserted into the support holes 7;

[0027] By adopting the above technical solution, the inner sheet 6 and the support sheet 2 are supported by inserting the support rod 8 through the support hole 7.

[0028] Among them, the outer plate surface of the connecting plate 9 away from the support rod 8 is fixed with a handle 10, and the handle plate of the handle 10 is an L-shaped handle plate.

[0029] By adopting the above technical solution, holding the handle 10 can pull the connecting plate 9 and the support rod 8 out of the inner plate 6 and the support plate 2.

[0030] The groove 4 has a triangular elongated groove, and the triangular pieces on both sides of the solid piece 5 are inserted into the groove 4.

[0031] By adopting the above technical solution, the triangular piece of solid sheet 5 can be fitted and connected in the groove of groove 4, ensuring that solid sheet 5 can provide effective support for part 3.

[0032] Among them, the inner sheet 6 is arranged and fixed in four groups among the three groups of sheet bodies of the support sheet 2;

[0033] By adopting the above technical solution, the three sets of supporting pieces 2 can obtain stable support through a large number of inner pieces 6.

[0034] Wherein, the length of the substrate 1 is greater than the length of the support sheet 2;

[0035] By adopting the above technical solution, the longer plate of the substrate 1 can support the support sheet 2 to be printed and grown on its own plate surface.

[0036] It should be noted that this utility model is a laser selective melting support addition system. During the additive manufacturing process of parts in the laser selective melting equipment, the support sheet 2 grows upward from the substrate 1, and the inner sheet 6 grows between the support sheets 2. Support holes 7 can be pre-made between the support sheet 2 and the inner sheet 6. At the same time, a groove 4 is set at the opposite sheet near the upper end of the support sheet 2. When the support sheet 2 grows to the position where the part is ready to be formed, the laser selective melting equipment is unpacked, and a solid sheet 5 is added below the plane of the part 2. The solid sheet 5 is stuck in the groove 4 of the support sheet 2, and the part 2 continues to grow on the solid sheet 5. After the part 2 is formed, the support rod 8 at the support sheet 2 and the inner sheet 6 is removed, and the solid sheet 5 is removed by machining to ensure the surface quality of the part.

[0037] It should be noted that this utility model is a laser selective melting support addition system. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A laser selective melting support addition system, characterized in that: The assembly includes a substrate (1), a support plate (2), a part (3), a solid piece (5), an inner piece (6), a support rod (8), and a connecting plate (9). The support plate (2) is arranged on the surface of the substrate (1), and the inner piece (6) is fixed between the pieces of the support plate (2). A groove (4) for mounting the solid piece (5) is opened between the opposing pieces of the support plate (2) above the inner piece (6). The part (3) is supported on the surface of the solid piece (5). The support rod (8) is inserted between the inner piece (6) and the support plate (2), and the connecting plate (9) is fixed outside the rod head of the support plate (2).

2. The laser selective melting support addition system according to claim 1, characterized in that: The inner sheet (6) and the support sheet (2) are symmetrically provided with support holes (7), and a support rod (8) is inserted into the support hole (7).

3. The laser selective melting support addition system according to claim 1, characterized in that: A handle (10) is fixed to the outer plate surface of the connecting plate (9) away from the support rod (8), and the handle plate of the handle (10) is an L-shaped handle plate.

4. The laser selective melting support addition system according to claim 1, characterized in that: The groove (4) has a triangular elongated groove, and the triangular pieces on both sides of the solid piece (5) are inserted into the groove (4).

5. The laser selective melting support addition system according to claim 1, characterized in that: The inner sheet (6) is arranged and fixed in four groups among the three groups of sheets of the support sheet (2).

6. The laser selective melting support addition system according to claim 1, characterized in that: The length of the substrate (1) is greater than the length of the support sheet (2).

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