A kind of dot matrix core structure and its cutting interlocking preparation method

A lattice and core technology, which is applied in the field of lattice core structure and its cutting and interlocking preparation, can solve the problems of poor buckling resistance, improve the ability to resist local buckling of the panel, improve energy absorption, The effect of reducing the production cost

Active Publication Date: 2022-04-29
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is: as the thickness of the core plate increases, the buckling resistance of the existing hourglass lattice structure panel is poor, so a lattice core structure and its cutting and interlocking preparation method are proposed

Method used

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  • A kind of dot matrix core structure and its cutting interlocking preparation method
  • A kind of dot matrix core structure and its cutting interlocking preparation method
  • A kind of dot matrix core structure and its cutting interlocking preparation method

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Effect test

Embodiment 1

[0056] Embodiment 1: a kind of method adopting cutting interlocking to prepare lattice core structure, described method comprises the steps:

[0057] Step 1: Cutting the interlocking strips: Use the wire electric discharge machine to cut multiple superimposed plates into multiple identical interlocking strips. The thickness of the superimposed plates is preferably about 20mm. 3.5 mm / min. During EDM cutting, the cutting accuracy can be ensured by properly adjusting the tightness of the cutting wire; Set, and connect the end to end in order to form an integral body;

[0058] Step 2: Divide the interlocking strip: use an electric spark cutting machine to divide the interlocking strip into multiple first horizontal interlocking strips 1, multiple second horizontal interlocking strips 2, multiple first longitudinal interlocking strips 13 and multiple A second longitudinal interlocking strip 14;

[0059] Step 3: Assembling the dot matrix core: the first horizontal interlocking str...

Embodiment 2

[0061] Embodiment 2: a kind of method that adopts cutting interlocking method to prepare lattice core structure, described method comprises the following steps:

[0062] Step 1: Cutting the interlocking strips: using a laser cutting machine to cut the plate into interlocking strips, the interlocking strips are alternately arranged side by side by the first dot matrix unit 5 and the second dot matrix unit 6, and connected end to end in sequence integrally formed;

[0063] Step 2: Divide the interlocking strip: use a laser cutting machine to divide the interlocking strip into a plurality of first horizontal interlocking strips 1, a plurality of second horizontal interlocking strips 2, a plurality of first longitudinal interlocking strips 13 and a plurality of The second longitudinal interlocking strip 14;

[0064]Step 3: Assembling the dot matrix core: the first horizontal interlocking strip 1 and the second horizontal interlocking strip 2 are alternately arranged in parallel a...

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Abstract

A lattice core structure and a cutting and interlocking preparation method adopted therefor relate to the core material field of lattice sandwich panels. The main purpose of the invention is to solve the problem of poor buckling resistance of the existing hourglass lattice structure panel as the thickness of the core plate increases. A lattice core structure includes a plurality of first horizontal interlocking strips, a plurality of second horizontal interlocking strips, a plurality of first longitudinal interlocking strips and a plurality of second longitudinal interlocking strips, the first transverse The interlocking strips and the second horizontal interlocking strips are alternately arranged in parallel at equal intervals to form a horizontal group interlocking strip; the first longitudinal interlocking strips and the second longitudinal interlocking strips are arranged alternately and equidistantly in parallel to form a longitudinal group Embedded locking strips; the horizontal group embedded locking strips and the vertical group embedded locking strips are vertically arranged and connected with each other. The invention is mainly used to form the core material of the sandwich panel.

Description

technical field [0001] The invention relates to the core material field of lattice sandwich panels, in particular to a lattice core structure and a cutting and interlocking preparation method thereof. Background technique [0002] The lightweight lattice structure combines lightweight, high rigidity, high strength, energy absorption, noise reduction, stealth, thermal control and other composite multifunctional development characteristics, has been extensively studied and has begun to be applied to advanced spacecraft structures, Therefore, it has great potential to be applied in aerospace and marine fields. The research on the lattice structure mainly focuses on the pyramid lattice structure with excellent performance in all aspects, and it is found that it exhibits excellent mechanical properties. However, due to the wide node spacing of the connecting panels of the pyramid lattice structure, the panel's in-plane tensile resistance is weak, and due to the relatively large ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16S3/08B23P15/00B23H7/02B23K26/38B25B27/14
CPCF16S3/08B23P15/00B23H7/02B23K26/38B25B27/14
Inventor 冯丽佳吴林志张阿漫王诗平明付仁于国财
Owner HARBIN ENG UNIV
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