A precision electroforming method for making microstructure of high-frequency corrugated feed horn

A feed horn and microstructure technology, which is applied in the field of precision and ultra-precision device processing, can solve the difficulty of making high-frequency corrugated feed horn microstructures, the inability to uniformly deposit non-capsulated electroforming layers, and the difficulty in processing inner corrugated microstructures. etc. to achieve uniform electroforming deposition, ensure low roughness, and improve reliability

Active Publication Date: 2017-09-05
SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a precision electroforming method for making the microstructure of the high-frequency corrugated feed horn, so as to solve the problem of difficult processing of the inner corrugated microstructure with high aspect ratio of the high-frequency corrugated feed horn produced by the traditional technology
[0007] The second purpose of the present invention is to provide a precision electroforming method for making the fine structure of the high-frequency corrugated feed horn, so as to solve the problem that the existing precision electroforming method cannot uniformly deposit the electroforming layer without the cavity and reduce the strength of the feed horn The problem
[0008] The third object of the present invention is to provide a precision electroforming method for making the microstructure of the high-frequency corrugated feed horn, so as to solve the problem that the traditional electroforming method is difficult to produce the microstructure of the high-frequency corrugated feed horn with a low-roughness surface

Method used

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  • A precision electroforming method for making microstructure of high-frequency corrugated feed horn
  • A precision electroforming method for making microstructure of high-frequency corrugated feed horn
  • A precision electroforming method for making microstructure of high-frequency corrugated feed horn

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Embodiment 1

[0038] The steps of preparing the high-frequency corrugated feed horn in this embodiment are as follows: Figure 7 As shown, specifically:

[0039] Step 1: Make the electroforming core mold of the feed speaker. Produced by machining or casting figure 1 The electroformed mandrel for the feed horn shown in figure 2 shown. in, figure 1Among them, the horn teeth 101 are 0.24mm wide, the horn grooves 102 are 0.24mm wide, the horn grooves 102 are 0.37mm deep, the number of teeth is 80, the horn input radius is 0.75mm, the output radius is 4.33mm, the total length of the horn is 47.2mm, and the corrugated feed horn frequency is 183GHz. In this embodiment, the mandrel is made of 6061 aluminum alloy material, such as figure 2 As shown, the size of the mandrel groove 201 is copied from the trumpet tooth 101, with a width of 0.24mm and a depth of 0.37mm. The size of the mandrel tooth 202 is copied from the horn groove 102, with a width of 0.24mm.

[0040] Step 2: Perform surface ...

Embodiment 2

[0055] In this embodiment, except for the size of the feed horn and the electroforming mandrel described below, and the manufacturing materials of some structures, the materials, steps and manufacturing methods of the remaining parts are the same as those of Embodiment 1, and the different parts as follows:

[0056] In step 1, create figure 1 The electroformed mandrel for the feed horn shown in , where, figure 1 The dimensions of the feed horn are as follows: the horn teeth 101 are 0.27mm wide, the horn groove 102 is 0.27mm wide, the groove depth is 0.45mm, the number of teeth is 80, the horn input radius is 2.71mm, the output radius is 20.85mm, the total length of the horn is 76.23mm, and the corrugated feed The horn frequency is 150GHz.

[0057] In this embodiment, the mandrel is made of AZ40M magnesium alloy material, such as figure 2 The size of the mandrel slot 201 shown is copied from the trumpet tooth 101, with a width of 0.27mm and a depth of 0.45mm. The size of th...

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Abstract

The present invention provides a precise electroforming method for producing a fine structure of a high-frequency corrugated feed horn, specifically: according to the designed inner cavity structure form of the corrugated feed horn, an electroforming core mold of the feed horn is produced, and the core mold passes through the surface of the horn. After the addition of the anti-corrosion layer, the pictographic anode, cathode rotation, plating liquid jet, bidirectional pulse and physical polishing are used together to precisely electroform copper on the core mold to obtain the feed horn electrocasting, and then the electrocasting is combined with the core. The mold is demolded and separated, and the feed horn is obtained. The invention solves the problem of difficult micro-fabrication of the inner corrugation of the high-frequency corrugated feed horn with high aspect ratio, and uses the precision electroforming technology to obtain the high-frequency corrugated feed horn with low inner surface roughness and no capsule in the annular tooth, which greatly improves the The structural strength of the feed horn produced by electroforming is improved, and the low roughness of the horn surface effectively improves the reliability of microwave signal transmission.

Description

technical field [0001] The invention relates to the technical field of precision and ultra-precision device processing, in particular to a precision electroforming method for making a microstructure of a high-frequency corrugated feed horn. Background technique [0002] With the rapid development of space technology, the frequency band of meteorological microwave imaging detection instruments has expanded from visible light and infrared to microwave. Whether it is a military meteorological satellite that obtains complex environmental information on the future battlefield in modern information warfare, or a civil meteorological satellite that conducts all-weather and all-weather remote sensing observations of the earth's atmosphere from space outside the atmosphere, in order to accurately obtain various detection All elements need to be equipped with a high-performance microwave imaging detector. The antenna feed system of high-performance microwave imaging detectors often u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D1/00
Inventor 符容刘兰波王立春倪忠标
Owner SHANGHAI SPACEFLIGHT ELECTRONICS & COMM EQUIP RES INST
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