阅读说明：本技术 一种增材制造的加强筋结构 (Reinforcing rib structure for additive manufacturing ) 是由 吴冬冬 钱远宏 刘莹莹 焦世坤 宋国华 刘程程 许旭鹏 于 2019-09-30 设计创作，主要内容包括：本发明属于增材制造技术领域,具体涉及一种增材制造的加强筋结构。该加强筋结构由面板和面板上的加强筋组成,采用增材制造技术成形。面板和加强筋为整体成形,具有轻量化程度高、整体刚性好、比强度高等特点。该增材制造的加强筋结构,成形尺寸精度高,表面质量好,非装配面经增材制造一次成形,无需后续机加工,材料利用率高,生产效率高。(The invention belongs to the technical field of additive manufacturing, and particularly relates to a reinforcing rib structure for additive manufacturing. The reinforcing rib structure consists of a panel and reinforcing ribs on the panel, and is formed by adopting an additive manufacturing technology. The panel and the reinforcing ribs are integrally formed, and the panel has the characteristics of high light weight degree, good integral rigidity, high specific strength and the like. The reinforcing rib structure manufactured by the additive has the advantages of high forming size precision, good surface quality, one-step forming of a non-assembly surface by additive manufacturing, no need of subsequent machining, high material utilization rate and high production efficiency.)

1. The reinforcing rib structure is characterized by consisting of a panel and reinforcing ribs on the panel, and is formed by adopting an additive manufacturing technology.

2. The reinforcing bar structure of claim 1, wherein the additive manufacturing technique comprises selective laser melting, selective electron beam melting, selective laser sintering, laser stereoforming, arc additive manufacturing, stereolithography, or fused deposition.

3. The reinforcing bar structure of claim 1, wherein the face plate and reinforcing bar are integrally formed using additive manufacturing techniques.

4. A reinforcing bar structure according to claim 1, wherein the reinforcing bars are triangular, diamond-shaped or honeycomb hexagonal.

5. The reinforcing bar structure of claim 1, wherein the minimum thickness dimension of the face sheet and reinforcing bar is not less than the minimum forming entity dimension that can be formed by the additive manufacturing technique used.

6. The reinforcing bar structure of claim 1, wherein the face sheet and reinforcing bar are of the same material or of different materials.

7. The reinforcing bar structure of claim 1, wherein the face plate and reinforcing bar are of titanium alloy, aluminum alloy, superalloy, stainless steel or copper alloy material.

8. The reinforcing bar structure of claim 1, wherein the face plate and reinforcing bar are of nylon, ceramic and resin materials.

9. A reinforcing bar structure according to claim 1, wherein the face sheets and reinforcing bars are of carbon fibre composite material.

Technical Field

The invention belongs to the technical field of additive manufacturing, and particularly relates to a reinforcing rib structure for additive manufacturing.

Background

With the rapid development of advanced aerospace technologies, the demands of new generation aerospace vehicles on flight time, flight speed and the like are continuously improved, and the demands of aerospace vehicles on high performance and light weight are increasingly increased under the influence of energy environments. At present, in the field of aerospace, a large thin-wall structure is an important way for realizing light weight of the structure. In order to ensure the rigidity of the integral structure of the thin-wall product, the thin-wall structure is provided with an internal framework or a reinforcing rib structure, and the traditional reinforcing rib structure is a distributed structure which is vertical and horizontal and forms a shape like a Chinese character 'jing'.

The reinforcing rib structure is formed by adopting a casting or welding method, has the characteristics of high dimensional precision control difficulty, complex technological process, low production efficiency, high production cost and the like, has high risk of casting or welding deformation of parts such as special-shaped curved surfaces and thin-wall cabin sections, and cannot ensure high-precision and high-efficiency forming of products.

Disclosure of Invention

Technical problem to be solved

The invention provides a reinforcing rib structure manufactured by additive manufacturing, which aims to solve the technical problem of how to realize high performance and light weight.

(II) technical scheme

In order to solve the technical problem, the invention provides an additive manufacturing reinforcing rib structure, which consists of a panel and reinforcing ribs on the panel and is formed by adopting an additive manufacturing technology.

Further, additive manufacturing techniques include selective laser melting, selective electron beam melting, selective laser sintering, laser stereoforming, arc additive manufacturing, stereolithography, or fused deposition.

Further, the panel and the reinforcing ribs are integrally formed by adopting an additive manufacturing technology.

Further, the reinforcing ribs are triangular, rhombic or honeycomb hexagonal.

Further, the minimum thickness dimension of the face sheet and stiffener is not less than the minimum formed entity dimension that the additive manufacturing technique used can form.

Furthermore, the panel and the reinforcing ribs are made of the same material or different materials.

Further, the panel and the reinforcing ribs are made of titanium alloy, aluminum alloy, high-temperature alloy, stainless steel or copper alloy materials.

Further, the face plate and the reinforcing ribs are made of nylon, ceramic and resin materials.

Further, the panel and the reinforcing ribs are made of carbon fiber composite materials.

(III) advantageous effects

According to the reinforcing rib structure for additive manufacturing, the panel and the reinforcing ribs are integrally formed, and the reinforcing rib structure has the characteristics of high light weight degree, good integral rigidity, high specific strength and the like. The reinforcing rib structure manufactured by the additive has the advantages of high forming size precision, good surface quality, one-step forming of a non-assembly surface by additive manufacturing, no need of subsequent machining, high material utilization rate and high production efficiency.

Drawings

FIG. 1 is a schematic plan view of a reinforcing bar structure manufactured by additive manufacturing according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of an additive manufactured stiffener structure according to the present invention;

fig. 3 is a schematic structural diagram of a reinforcing bar support manufactured by additive manufacturing according to an embodiment of the present invention.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

The embodiment provides an additive manufacturing light-weight thin-wall reinforcing rib support structure, as shown in fig. 1 and 2, the reinforcing rib support structure is composed of a panel 1 and reinforcing ribs 2, and is integrally formed at one time by adopting an electron beam selective melting forming technology, and the minimum formed entity size is 0.1 mm. Wherein, the panel 1 and the reinforcing rib 2 are made of stainless steel additive manufacturing powder, and are fully connected and metallurgically bonded. The reinforcing ribs 2 in this embodiment are of an irregular honeycomb hexagonal structure. The thickness of the panel 1 and the reinforcing ribs 2 is 1mm, and the thickness of the panel and the reinforcing ribs is 0.1mm larger than the minimum physical size which can be formed by selective melting forming additive manufacturing of the used electron beams. The final formed reinforcing bar support structure is shown in figure 3.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.