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Preparation method of rectangular pyramid metal lattice material

A technology of metal lattice and square pyramid, which is applied in the field of preparation of sandwich structure of square pyramid metal lattice material, can solve the problem of different mechanical properties of metal powder, low strength of square pyramid lattice material, sandwich and panel bonding strength Poor and other problems, to achieve the effect of high degree of automation, short production cycle, high dimensional accuracy and position accuracy

Inactive Publication Date: 2010-02-03
BEIHANG UNIV
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Problems solved by technology

The lattice material produced by this process has good integrity, but the disadvantage is that the mechanical properties of the metal powder and the metal itself are not the same, and the types of metal powder that can be processed by electron beam melting equipment are very limited
Methods (2) and (3) can be used to make rectangular pyramid lattice sandwich structures, among which method (2) is currently the most commonly used method in the world, but because of the secondary molding process, the adhesion of the sandwich and panels When the bonding strength is poor, the strength of the actually produced quadrangular pyramid lattice material is lower than the theoretical value. Therefore, it is necessary to improve and develop a new preparation technology for quadrangular pyramid lattice materials.

Method used

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  • Preparation method of rectangular pyramid metal lattice material
  • Preparation method of rectangular pyramid metal lattice material
  • Preparation method of rectangular pyramid metal lattice material

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Embodiment Construction

[0019] The preparation method of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] figure 1 It is a schematic diagram of a sandwich beam made of quadrangular pyramid lattice material. The sandwich beam is composed of an upper panel 1, a lower panel 3 and a sandwich core 2, wherein the sandwich core 2 is composed of many quadrangular pyramid cells, such as figure 2 As shown, each quadrangular pyramid cell contains four identical rod elements 4 , and the bottom of the quadrangular pyramid cell is the lower panel 3 .

[0021] The most common quadrangular pyramid lattice material is 304# steel and 6061 aluminum alloy, take 304# steel quadrangular pyramid lattice material sandwich beam as example below, illustrate the preparation process utilizing the preparation method of the present invention, concrete implementation process is as follows image 3 The flow chart given is as follows:

[0022] (1) Determine the geomet...

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Abstract

The invention discloses a preparation method of a rectangular pyramid metal lattice material and includes the following steps of: defining geometric size of a sandwich beam of the lattice material; building a three-dimensional geometric model of the sandwich beam of the rectangular pyramid lattice material; writing a numerical control machining program and transferring a program file to a numerical control unit of a numerical control machine; and finally, processing the sandwich beam of the rectangular pyramid lattice material through the numerical control machine. The preparation method of the invention has the advantages of high automation degree and short manufacturing cycle; in addition, the rectangular pyramid metal lattice material prepared with the method is high in strength, levelin plane, good in periodicity of rectangular pyramid cell elements and widespread in application.

Description

technical field [0001] The invention relates to a preparation technology of a sandwich structure of a quadrangular pyramid metal lattice material, which is used in a lightweight multifunctional structure in the field of aerospace. Background technique [0002] With the development of the aerospace field, countries have higher and higher requirements for the development and development of ultra-light, high-performance, and multi-functional materials. Common lightweight multifunctional materials are honeycomb materials, foam materials, etc., which are widely used in aeronautical structures because of their designability, high specific stiffness, and high specific strength. In recent years, the field of materials and mechanics led by Harvard University, Cambridge University and Massachusetts Institute of Technology has proposed a new type of lightweight material, namely space lattice material. The lattice material is similar to existing space grids, but much smaller in size. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P17/00B23C3/24B23H9/14B23H7/02
Inventor 刘华杨嘉陵徐庆红
Owner BEIHANG UNIV
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