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Hollow sandwich structure and manufacture method thereof

A technology of hollow interlayer and interlayer structure, which is applied in the direction of aircraft parts, fuselage, transportation and packaging, etc. It can solve the problems that the structural center of gravity of the parts cannot be adjusted, and the stiffness distribution cannot be realized, so as to achieve increased stiffness, high yield, and surface good quality effect

Inactive Publication Date: 2012-11-14
北京智创联合科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the existing technology, whether it is the method of "casting skeleton combined with skin laser welding or resistance welding", "superplastic forming / diffusion connection", or other developments for the purpose of reducing the weight of the machine parts and maintaining their rigidity None of the manufacturing methods can solve the problem of adjusting the structural center of gravity and stiffness distribution of the machine parts, and it cannot realize the simultaneous processing of a structure with a solid structure and a hollow structure.

Method used

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  • Hollow sandwich structure and manufacture method thereof
  • Hollow sandwich structure and manufacture method thereof
  • Hollow sandwich structure and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0051] Such as Figure 1~3 As shown, a hollow sandwich structure, wherein the interior of the sandwich structure 1001 is a hollow cavity 1011 or consists of a hollow cavity 1011 and a solid structure (not shown), in order to enhance the structural strength of the sandwich structure, there are reinforcing ribs in the cavity 1011 1012, wherein the solid structure is used to change the structural center of gravity of the sandwich structure 1001 or to enhance the connection strength between the sandwich structure 1001 and other connecting parts, a solid structure is provided at the connection position of the sandwich structure 1001.

[0052] The sandwich structure 1001 includes an upper panel 1014 and a lower panel 1015, and there is a hollow cavity 1011 between the upper panel 1014 and the lower panel 1015, wherein the reinforcing rib 1012 includes an upper panel reinforcing rib 1141 arranged on the upper panel 1014, and an upper panel reinforcing rib 1141 arranged on the lower pa...

Embodiment approach 2

[0056] Such as Figure 4 , Figure 5 As shown, in this embodiment, except that the specific structure of the reinforcing rib 2012 is different from that of Embodiment 1, other structures are similar to that of Embodiment 1. In this embodiment, the reinforcing rib 2012 consists of a plurality of parallel upper The panel reinforcement rib 2141 and the lower panel reinforcement rib 2151 are formed. Preferably, the distance between each reinforcement rib 2012 composed of the upper panel reinforcement rib 2141 and the lower panel reinforcement rib 2151 parallel to each other is equal. The reinforcement rib 2012 of this structure is The production process is simple and convenient for processing and production.

Embodiment approach 3

[0058] Such as Figure 6 , Figure 7 As shown, in this embodiment, except that the specific structure of the reinforcing rib 3012 is different from that of Embodiment 1, other structures are similar to that of Embodiment 1. In this embodiment, the reinforcing rib 3012 is reinforced by multiple upper panels The network structure composed of the ribs 3141 and the lower panel reinforcement ribs 3151 has a network structure unit of triangle, trapezoid or rectangle and their combination, preferably the structure unit of the network structure composed of the reinforcement rib 3012 is a rectangle.

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Abstract

The invention relates to a hollow sandwich structure and a manufacture method thereof. The inner part of the sandwich structure is a hollow cavity or is composed of the hollow cavity and a solid structure, and reinforcing ribs are arranged in the hollow cavity. The hollow cavity is arranged between an upper panel and a lower panel of the sandwich structure, and the reinforcing ribs comprise an upper panel reinforcing rib arranged on the upper panel and a lower panel reinforcing rib arranged on the lower panel. In the production process of the hollow sandwich structure, the reinforcing rib structures in the upper panel and the lower panel are respectively processed, then diffusion welding is carried out, and finally the exterior outline of the hollow sandwich structure is processed to complete the manufacture of the hollow sandwich structure. The technical process of the sandwich structure can be simplified, the rate of finished products is increased, and the production cost is reduced. The surface quality is good, no weak connection exists, the center of gravity of a product can be adjusted, and the stiffness of the local position can be increased. The strength and the stiffness of the product are increased, and meanwhile, the quality of the product is not influenced.

Description

technical field [0001] The invention belongs to the technical field of manufacturing and processing sandwich structures, and relates to a hollow sandwich structure and a manufacturing method thereof. Background technique [0002] At present, hollow sandwich structures are involved in aerospace and aerospace equipment or some low-quality and high-strength structures, especially in the wings or other components of some aircraft in the aviation and aerospace fields. In order to reduce the quality of aircraft equipment, its The structure will be fabricated as a sandwich structure. [0003] In the sandwich structure manufacturing process, the commonly used manufacturing process is the method of "casting skeleton combined with skin laser welding or resistance welding", the main steps of which are: first casting the skeleton of the sandwich structure, and then thermoforming the upper skin and The lower skin is finally welded to the skeleton by skin laser welding or resistance weld...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/00
Inventor 杨建国吴维贵
Owner 北京智创联合科技股份有限公司
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