Additive manufacturing-based suspension surface typical aeronautical part supporting structure with hole in inner cavity

Abstract

The utility model discloses an additive manufacturing-based suspension surface typical aeronautical part supporting structure with a hole in an inner cavity, relates to the technical field of additive manufacturing, and aims to solve the problem that a suspension surface part with a hole in an inner cavity is scrapped due to a residual supporting structure in the suspension surface part when being manufactured, and the additive manufacturing-based suspension surface typical aeronautical part supporting structure comprises four areas of plugging supports, a third adaptive support, a second-area main support and a first-area main support are sequentially arranged below the fourth-area plugging support, and an integrated structure is formed through 3D printing; wherein the bending angle of the main support in the first area is not smaller than 80 degrees, and the bending angle of the transition support in the second area ranges from 30 degrees to 90 degrees.

Description

Technical Field

[0001] The utility model relates to the technical field of additive manufacturing, and in particular to a typical aviation part support structure of an overhanging surface with a hole in an inner cavity based on additive manufacturing. Background Art

[0002] Today, additive manufacturing has been widely used in the production of various aerospace parts. Its unique feature is integrated manufacturing, which makes it faster and cheaper to manufacture complex internal cavity parts. However, traditional block supports have a difficult problem in the overhanging surface structure with holes in the internal cavity: they cannot be completely removed. These residual supports will cause the parts to be scrapped, affecting manufacturing quality and cost-effectiveness. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a typical aviation part support structure with an inner cavity perforated surface based on additive manufacturing, which includes a four-zone blocking support, and the following are arranged in sequence below the four-zone blocking support: a three-zone adaptive support, a two-zone main support, and a one-zone main support, and are 3D printed as an integrated structure; wherein the bending angle of the one-zone main support is not less than 80 degrees, and the bending angle range of the two-zone transition support is set between 30 degrees and 90 degrees.

[0004] Preferably, the cross-sectional shape of the main support of the one zone is quadrilateral or circular, and the cross-sectional diameter or size should be between 1.8 mm and 3 mm.

[0005] Preferably, the bending angle of the main support in the zone is preferably 90 degrees.

[0006] Preferably, the cross-section of the second zone transition support is circular, and the diameter is less than or equal to the diameter of the main support rod of the first zone.

[0007] Preferably, the connection portion between the three-zone adaptive support and the hanging surface of the part with a hanging surface with a hole in the inner cavity is smaller than the size of the part hole.

[0008] Preferably, the thickness of the four-zone blocking support is less than or equal to 2 mm.

[0009] The beneficial technical effects of the utility model are:

[0010] Setting up a partition structure and setting the bending range of the second zone over-support between 30 degrees and 90 degrees can increase the probability of successful manufacturing of parts with inner cavity overhanging surfaces with holes and reduce the scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a schematic diagram of the use of the utility model.

[0013] Figure numbers: 1. Main support of zone one, 2. Transition support of zone two, 3. Adaptive support 3 of zone three, 4. Blocking support of zone four. DETAILED DESCRIPTION

[0014] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0015] like Figure 1 As shown, a typical aviation part support structure with an inner cavity and a hole overhanging surface based on additive manufacturing is divided into four areas from bottom to top: area one, area two, area three and area four. Each area has a specific function and structural design to ensure the stable support and smooth manufacturing of the inner cavity and a hole overhanging surface part during the additive manufacturing process.

[0016] In this structure, the four-zone blocking support 4 is located at the top and is used to fill the overhanging surface. The thickness is less than or equal to 2 mm. Below it are arranged in sequence: the three-zone adaptive support 3, the two-zone transition support 2 and the one-zone main support 1, and are 3D printed as an integrated structure.

[0017] The function of the main support 1 in one zone is to connect the supporting structure of the base during the additive manufacturing process. Its cross-section is a regular quadrilateral or a circle, with a diameter or size between 1.8 mm and 3 mm, and its bending angle is not less than 80 degrees, preferably 90 degrees.

[0018] The second zone transition support 2 is a transition curve support, whose cross section is circular, and whose diameter is less than or equal to the rod diameter of the first zone main support 1, and whose angle range with the base during the additive manufacturing process is set between 30 degrees and 90 degrees.

[0019] The three-zone adaptive support 3 is connected to the overhang surface support, and the connection part between the three-zone adaptive support 3 and the overhang surface of the overhang surface part with inner cavity hole should be smaller than the size of the part hole.

[0020] When in use, each part with an inner cavity and a hanging surface with a hole is provided with several support structures, each group includes a primary support 1 in the first zone, a transition support 2 in the second zone, an adaptation support 3 in the third zone, and a plugging support 4 in the fourth zone, and each group corresponds to a hanging surface. The plugging support 4 in the fourth zone is used to plug the hole on the part and connect the adaptation support 3 in the third zone, the transition support 2 in the second zone, and the primary support 1 in the first zone to the base during additive manufacturing.

[0021] During the additive manufacturing process, the overhang surface part with inner cavity holes is sintered layer by layer to the overhang surface chamber, and the connection between the three-zone adaptive support 3 and the four-zone blocking support 4 plays a supporting role, so that the overhang surface can be smoothly formed. After the additive manufacturing is completed, the support can be completely removed by using a drill through the hole of the overhang surface of the part itself to ensure the integrity and quality of the part.

[0022] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0023] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0026] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A typical aviation parts support structure with inner cavity and hole overhanging surface based on additive manufacturing, It is characterized in that The invention comprises a four-zone blocking support (4), wherein the following are arranged in sequence below the four-zone blocking support (4): a three-zone adaptive support (3), a two-zone transition support (2), and a one-zone main support (1), and the three-zone blocking support (4) are 3D printed into an integrated structure; wherein the bending angle of the one-zone main support (1) is not less than 80 degrees, and the bending angle range of the two-zone transition support (2) is set between 30 degrees and 90 degrees.

2. The typical aviation parts support structure of the overhanging surface with inner cavity and holes based on additive manufacturing according to claim 1, It is characterized in that The cross-sectional shape of the main support (1) in the first zone is a quadrilateral or a circle, and the cross-sectional diameter or size should be between 1.8 mm and 3 mm.

3. The typical aviation parts support structure of the overhanging surface with inner cavity and holes based on additive manufacturing according to claim 2, It is characterized in that The bending angle of the main support (1) in one zone is preferably 90 degrees.

4. The typical aviation parts support structure of the overhanging surface with inner cavity and holes based on additive manufacturing according to claim 1, It is characterized in that The cross section of the second zone transition support (2) is circular, and the diameter is less than or equal to the rod diameter of the first zone main support (1).

5. The typical aviation parts support structure of the overhanging surface with inner cavity and holes based on additive manufacturing according to claim 1, It is characterized in that The connection portion between the three-zone adaptive support (3) and the hanging surface of the part with a hanging surface having a hole in the inner cavity is smaller than the size of the part hole.

6. The typical aviation parts support structure of the overhanging surface with inner cavity and holes based on additive manufacturing according to claim 1, It is characterized in that The thickness of the four-zone blocking support (4) is less than or equal to 2 mm.

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