Waveguide welding fixture

A welding tool and waveguide technology, applied in welding equipment, auxiliary welding equipment, welding/cutting auxiliary equipment, etc., can solve the problem of disconnection of slot waveguide antenna, and achieve the effect of reducing heat capacity, improving yield and simple operation.

Active Publication Date: 2018-11-13
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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  • Application Information

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Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a waveguide welding tool to solve the problem of the primary welding seam disengaging during the secondary vacuum brazing of the slotted waveguide antenna, and to meet the high precision requirements of the parts after welding

Method used

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Embodiment 1

[0030] combine Image 6 , an aerospace product slot waveguide antenna, including a welding part 200, a cover plate 300 fixedly connected with the first welding part 200; a vertical weld 201 on the primary welding part; The part 100 is welded together with the primary welding part 200, and the secondary welding seam 301 is along the length of the secondary part and the length direction of the primary welding part 200, that is, the horizontal direction;

[0031] The slot waveguide has a total length of 622.5mm, a width of 37.7mm, and a wall thickness of only 0.8mm. It is a typical thin-walled structure with an excessively large aspect ratio, and welding deformation is very easy to occur during welding. The geometric dimension accuracy of the inner cavity of the secondary welding part 100 is required to be ±0.02-±0.05 mm, and the flatness of the side wall of the waveguide cavity after welding is required to be 0.1 mm. according to Figure 7 As shown, the waveguide is installed ...

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Abstract

The invention discloses a waveguide welding fixture which comprises a supporting platform and a plurality of sets of clamping assemblies arranged in the length direction of the supporting platform. Each clamping assembly comprises two supporting bases and two swing blocks, wherein the two supporting bases are symmetrically fixed to the two ends of the supporting platform, and the two supporting bases are arranged on the two sides of the supporting platform in the width direction; each swing block comprises a swing block body and a rotating base, wherein the swing block body and the rotating base form the whole of the swing block, the lower end of the rotating base is connected with the corresponding supporting base through a rotating shaft, the lower end face of each swing block body is incontact with the upper end face of the supporting platform, and the opposite inner side faces of every two corresponding swing blocks are provided with protrusions with semicircular cross sections; and the length direction of the protrusions is the same as the length direction of the supporting platform, and the center lines of the protrusions are parallel to the upper end face of the supportingplatform. The waveguide welding fixture solves the problems that during second-time vacuum brazing of a waveguide antenna, first-time-welding welding line comes away, and the direct size accuracy is difficult to guarantee.

Description

technical field [0001] The invention belongs to the technical field of welding equipment, in particular to a waveguide welding equipment. Background technique [0002] High-frequency microwave devices such as millimeter waves and slot waveguide antennas are important components in radar products. They generally have the characteristics of thin walls (<1mm), easy deformation, and high dimensional control accuracy. Vacuum aluminum brazing is the first choice for microwave device manufacturing. In order to ensure the high-precision dimensions of microwave devices after vacuum brazing, the design of welding tooling is very important. In aluminum alloy vacuum brazing, the function of the tooling is to fix the brazing components and the solder together, so that an appropriate gap is formed at the joint of the components. During the process, the relative position of the components is kept unchanged to ensure their dimensional tolerances. Brazing tooling involves the whole proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K3/08B23K37/04
CPCB23K3/08B23K3/087
Inventor 曹慧丽桂涛王振亚杜立群吕辉
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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