RTM forming method of resin based thickness-variable antenna housing

A molding method and technology of variable thickness, applied in the field of RTM molding, can solve the problems of difficult production of variable wall thickness radome preforms, etc., and achieve the effects of good product quality consistency, simple operation process, and flexible design

Inactive Publication Date: 2018-04-03
湖北三江航天江北机械工程有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] The purpose of the present invention is to provide a simple and easy RTM molding method of resin-based variable thickness radome to solve the problem that the preformed body of variable wall thickness radome is difficult to make

Method used

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  • RTM forming method of resin based thickness-variable antenna housing
  • RTM forming method of resin based thickness-variable antenna housing
  • RTM forming method of resin based thickness-variable antenna housing

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] A radome is a spherical body plus a cylindrical section structure, in which the spherical body is the thinnest area of ​​the product wall thickness, with a thickness of 3mm, and the cylindrical section is the thickness change area, which gradually changes from 4mm to 7mm, see figure 1 , figure 2 shown.

[0029] The product is divided into an inner thickness consistent layer (area shown in 1 in the figure), an outer thickness consistent layer (area shown in 3 in the figure) and a thickness transition layer (area shown in 2 in the figure), wherein the inner and outer thickness consistent layers The thickness is 1.5mm, and the thickness transition layer is in the cylindrical section area, and the thickness is 1mm ( figure 1 The thickness transition layer in the middle and upper part is 1mm, adding 1.5mm each of the inner thickn...

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Abstract

The invention discloses an RTM forming method of a resin based thickness-variable antenna housing. The RTM forming method comprises the following steps: 1, according to the product structure, dividinga product into three areas namely an inner thickness consistent layer, a thickness transitional layer and an outer thickness consistent layer; 2, sewing up the inner thickness consistent layer and the thickness transitional layer into an integrity, and then mounting the integrity with the outer thickness consistent layer in a sleeving manner to form a preforming body; 3, carrying out integral penetrating sewing on the preforming body; and 4, mounting the preforming body in a die cavity, and adopting a resin transfer molding technique to carry out product forming. According to the RTM formingmethod, the method of sewing up woven fabric and fiber cloth laying layer is adopted to manufacture a fiber-reinforced preforming body, the design is flexible, and manufacture of various preforming bodies with complicated wall thickness variation is suitable; the fiber cloth laying layer is introduced in the thickness variable area for uniform transition, so that the product quality consistency ishigh; the operation technology is simple; and the cost is lower.

Description

technical field [0001] The invention belongs to the technical field of RTM molding, and in particular relates to an RTM molding method of a resin-based variable-thickness radome. Background technique [0002] The resin transfer molding method (RTM molding process method) is used in high-tech fields such as the aerospace industry for its low-cost, high-quality manufacturing characteristics and advanced process forms, thereby replacing manual layup, autoclave curing and other requirements. Intensive processing. [0003] The radome is manufactured by the reinforced material preform / resin transfer molding process technology, which can better realize the design requirements of high precision of the wall thickness of the radome and uniformity of the medium. [0004] In the RTM molding process, the quality of the reinforced material preform has an important influence on the product quality. The common radome structure is similar to the conical structure, and the wall thickness is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B11/00B29C70/48B29C70/54
CPCB29B11/00B29C70/48B29C70/54
Inventor 马娟曾甜甜李天明肖雯静高李帅
Owner 湖北三江航天江北机械工程有限公司
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