Heat setting device for thin-wall additive manufacturing part

Abstract

The utility model discloses a heat setting device for a thin-wall additive manufacturing part, relates to the technical field of selective laser sintering, and aims to overcome the defects that a mould structure is used for vacuum heat treatment and shape correction, the space in a furnace needs to be occupied by a weighted object, cooling is not uniform due to lack of a cooling gap, and the working efficiency is high. In order to solve the problems that the heat treatment quality and uniformity of parts are affected due to the fact that the parts are stacked for use and the stress is inconsistent when the parts are stacked for use, the utility model discloses an upper template, the lower part of the upper template is movably connected with a lower template through a wedge-shaped locking block, the lower template is internally provided with a shape bulge corresponding to the shape of the parts to be shaped, and both the upper template and the lower template are provided with a plurality of through holes.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power training, and in particular relates to a thermal shaping device for thin-walled additively manufactured parts. Background Art

[0002] Selective Laser Melting (SLM) is an advanced additive manufacturing process that builds three-dimensional parts by melting metal powder layer by layer. Although this technology has significant advantages in manufacturing parts with complex shapes, the uneven distribution of thermal stress and cooling rate often leads to significant deformation of the parts when manufacturing large, thin-walled parts. For example, a thin-walled part with a length of approximately 300 mm, a width of approximately 85 mm, and a base thickness of only 1.5 mm may experience severe deformation during the SLM manufacturing process, with deformation of the base plate being particularly noticeable, with contour deviations sometimes exceeding 6 mm.

[0003] To address this issue, existing technologies typically employ post-processing methods. One common approach involves flattening or correcting deformed parts using tools such as hydraulic presses or bench vises to reduce deformation and restore geometric accuracy. Another approach involves using specialized jigs to correct the shape of the parts. These jigs can be designed to suit the shape and size of the part, adapting to the correction requirements of different parts.

[0004] However, there are also some disadvantages to using a jig structure for shape correction. During the vacuum heat treatment shape correction process, weights need to be placed on top of the jig structure to ensure its stability. These weights take up valuable space in the furnace, limiting the furnace's loading capacity and processing efficiency. The lack of cooling gaps between jigs, that is, no space reserved for the circulation of cooling gas, results in poor cooling. Uneven cooling can affect the heat treatment quality and performance of the parts. When using multiple jigs for stacking and correction, the forces acting on jigs at different levels are inconsistent due to the reliance on gravity for correction. This inconsistency in force can lead to uneven correction results, affecting the final quality of the parts. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model proposes a thin-walled additive manufacturing part heat setting device, including an upper template, which is movably connected to a lower template at the bottom through a wedge-shaped locking block, and a shaped protrusion corresponding to the shape of the part to be set is provided inside the lower template, and both the upper template and the lower template are provided with a plurality of through holes.

[0006] Preferably, the middle areas of the surfaces of the upper and lower templates are recessed inwardly and lower than the areas on both sides.

[0007] Preferably, the upper template and the lower template are designed to avoid air gaps at other locations except for the raised portions.

[0008] Preferably, connecting plates are provided around the upper template and the lower template, which lock the wedge-shaped locking blocks on the upper template and the lower template through locking bolts.

[0009] Preferably, handles are provided at corresponding positions on both sides of the upper template and the lower template.

[0010] Preferably, the upper template and the lower template are firmly connected by positioning pins provided at their four corners.

[0011] Preferably, the connecting plate is arranged on the end faces of the upper template and the lower template through a plurality of connecting plate bolts.

[0012] Beneficial effects of the utility model:

[0013] 1. The self-locking method is adopted, which eliminates the need to add heavy objects on top to maintain pressure, thereby saving space in the furnace and simplifying the operation process.

[0014] 2. Cooling gaps are specially added between the upper and lower templates. These gaps allow cooling gas to flow between the fixtures, improving the cooling effect and ensuring uniform cooling during heat treatment.

[0015] 3. Each template is independently locked by bolts. This design allows each template to be adjusted independently without being affected by other templates.

[0016] 4. Since the force between the templates is evenly distributed and the locking method is more stable, the risk of damage to the parts is reduced, ensuring the quality of the proofreading and the integrity of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a heat setting device for thin-walled additively manufactured parts in this utility model.

[0018] Figure 2 This is a top view of the structure of a thermal setting device for thin-walled additively manufactured parts in the utility model.

[0019] Figure 3 This is a structural diagram of an upper template for a thermal shaping device for thin-walled additively manufactured parts in the utility model.

[0020] Figure 4 This is a structural diagram of the lower template of a thermal setting device for thin-walled additively manufactured parts in the utility model. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the description. Conversely, these embodiments are provided for the purpose of providing a more thorough and comprehensive understanding of the disclosure of the present application.

[0022] like Figure 1 As shown, a device for heat setting thin-walled additive manufacturing parts is composed of an upper template 1 and a lower template 2, wherein the upper template 1 is movably connected to the lower template 2 via a wedge-shaped locking block 4. The lower template 2 is internally designed with a shaped protrusion that matches the shape of the part to be set, ensuring that the part can be correctly shaped and supported during the heat setting process. To improve the efficiency of heat setting, both the upper template 1 and the lower template 2 are designed with a number of through holes to remove excess material, thereby reducing the weight of the entire setting device. The design of the through holes allows the cooling gas to circulate more effectively, thereby accelerating the dissipation of heat during the heat setting process and improving cooling efficiency.

[0023] The middle area of ​​the surface of the upper template 1 and the lower template 2 is recessed inwardly and lower than the areas on both sides. During the stacking process, the middle area of ​​the surface serves as a lower contact surface, which helps to form an exhaust channel between the stacked objects.

[0024] like Figure 3 and Figure 4 As shown, except for the raised parts where the upper template 1 and the lower template 2 are in contact, air gaps are designed to be formed in other positions, allowing the cooling gas to flow freely between the upper template 1 and the lower template 2, optimizing the airflow path and ensuring the uniformity of the cooling effect.

[0025] Connecting plates 4 are installed around the device, which lock the wedge-shaped locking blocks 3 to the upper and lower templates 1 and 2 via locking bolts 6. The locking mechanism uses a sophisticated geometric structure to reduce material usage without sacrificing structural stability, thereby reducing the weight of the upper and lower templates 1 and 2.

[0026] In order to facilitate operators to operate the equipment, handles 5 are provided at corresponding positions on both sides of the upper template 1 and the lower template 2.

[0027] The upper template 1 and the lower template 2 are firmly connected by positioning pins 7 provided at the four corners, ensuring precise alignment during the shaping process and avoiding deformation of parts due to inaccurate positioning.

[0028] like Figure 2 As shown, the connecting plate 4 is firmly mounted on the end faces of the upper template 1 and the lower template 2 by a plurality of connecting plate bolts 8 .

[0029] When in use, first, place the part to be shaped on the corresponding position of the lower template 2, and use the shape protrusion inside the lower template 1 to preliminarily shape and support the part; align the upper template 1 with the lower template 2 and place it above the part, and use the positioning pin 7 to ensure that the through holes of the upper template are aligned with the through holes of the lower template to facilitate gas circulation during the heat treatment process; use the wedge-shaped locking block 3 and the connecting plate 4 to lock the upper template 1 and the lower template 2; under the action of the wedge-shaped locking block 3, further correct the part to ensure that the shape of the part meets the design requirements; put the shaping device and the part into the heat treatment furnace together for heat treatment; after heat treatment, use the through holes of the upper template 1 and the lower template 2 for cooling, which allow the cooling gas to circulate evenly, accelerate the cooling of the part and achieve rapid shaping; after the heat treatment is completed, take the shaping device out of the furnace and cool it; when the part and the shaping device are fully cooled, loosen the wedge-shaped locking block 3 and the connecting plate 4, remove the upper template 1, and take out the thin-walled part that has been shaped.

[0030] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A thin-walled additive manufacturing part heat setting device, characterized in that: The upper template (1) is movably connected to the lower template (2) via a wedge-shaped locking block (3) at its lower portion, and a protrusion having a shape corresponding to the shape of the part to be formed is provided inside the lower template (2). Both the upper template (1) and the lower template (2) are provided with a plurality of through holes.

2. The heat setting device according to claim 1, characterized in that: The middle areas of the surfaces of the upper template (1) and the lower template (2) are recessed inwards and lower than the areas on both sides.

3. The heat setting device according to claim 2, characterized in that: The upper template (1) and the lower template (2) are designed to avoid air gaps at other locations except where the raised portions are in contact.

4. The heat setting device according to claim 3, characterized in that: Connecting plates (4) are provided around the upper template (1) and the lower template (2), and the wedge-shaped locking blocks (3) are locked on the upper template (1) and the lower template (2) via locking bolts (6).

5. The heat setting device according to claim 4, characterized in that: Handles (5) are provided at corresponding positions on both sides of the upper template (1) and the lower template (2).

6. The heat setting device according to claim 1, characterized in that The upper template (1) and the lower template (2) are firmly connected via positioning pins (7) provided at their four corners.

7. The heat setting device according to claim 4, characterized in that: The connecting plate (4) is arranged on the end faces of the upper template (1) and the lower template (2) via a plurality of connecting plate bolts (8).

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