Method for manufacturing antenna reflecting surface with aluminum skin honeycomb sandwich structure

Abstract

The invention discloses a method for manufacturing an antenna reflecting surface with an aluminum skin honeycomb sandwich structure, which relates to a technology for manufacturing the antenna reflecting surface in the fields of satellite communication, radio measurement and control, deep space exploration, large radio telescopes and the like. The method adopts a high-precision enveloping mold forrealizing the stretch forming of an inner skin and an outer skin, imposes the negative pressure through sealing and a vacuum device, presses and attaches the two layers of the skins, a honeycomb andother separating components on the mold, carries out adhesive curing and molding to form a whole by a bonding agent, and forms a high-precision aluminum skin honeycomb sandwich antenna reflecting surface unit after releasing vacuum negative pressure. The method has the advantages of high precision, light weight, great rigidness, great strength, simple processing technology, stable and reliable performances, low manufacturing cost, easy realization of production environment, mass production and the like, thereby being particular applicable to manufacturing the high-precision antenna reflectingsurfaces above ka frequency band and Q frequency band.

Description

technical field [0001] The invention relates to a method for manufacturing an antenna reflective surface of an aluminum-skinned honeycomb sandwich structure in the fields of satellite communication, radio measurement and control, deep space exploration, and large-scale radio telescopes. It is especially suitable for the batch manufacturing technology of the reflective surface of the high-precision antenna panel working in the Ka frequency band and above the Q frequency band. Background technique [0002] With the rapid development of communication and measurement and control technology, the working frequency band is getting higher and higher, and higher requirements are put forward for the accuracy of the antenna reflector. The main reflector of large and medium-sized antennas has dozens or even thousands of single reflectors. Composition, the accuracy of the reflector of a single antenna is the basis of the accuracy of the main reflector of the antenna. At present, the man...

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Problems solved by technology

The maximum thickness of the honeycomb sandwich material is 10 mm, which determines that the rigidity of the honeycomb core material is very poor and cannot play the role of enhancing the rigidity. The cushioning effect of the honeycomb sandwich material mentioned in this invention relies on the stretchability of the honeycomb to compensate for the supporting skeleton panel The unequal height gap between the surface and the curved panel cannot be realized in engineering applications

[0006] 3. The process cost of this invention is high. In addition to manufacturing the skin curved surface stretching mold tire and the supporting bone curved surface stretching mold tire, the panel also needs to manufacture Z-shaped rib beam stretch bending mold tires, supporting skeleton surface riveted frames, etc. Molded tires increase the manufacturing cost, and there are also disadvantages such as complex process, long processing cycle, difficult to control many processes, difficult to achieve high precision, and unable to realize mass production of high-precision panels.

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