Bending type forming method of corner cut waveguide bend

Abstract

The invention relates to a bending type forming method of a corner cut waveguide bend, which belongs to the technical field of waveguide forming. Two triangular bending grooves are formed in the rear surface of a waveguide tube and divide the waveguide tube into three parts in the length direction, wherein the center part of the waveguide tube is a bending area. Bending gaps are processed in the front surface, the upper surface and the lower surface of the waveguide tube; the rectangular waveguide tube is folded forwards along the two triangular bending grooves; and flanges are welded at the two ends of the formed waveguide tube to obtain the corner cut waveguide bend. According to the bending type forming method, the same waveguide tube is adopted for forming, so that the dimension error of an inner cavity assembled by different waveguide tube blanks is reduced, and the probability of dislocation deficiency of the splicing surface of the inner cavity is reduced; a bending type self-positioning structure is adopted to control the inner cavity forming, so that the effects of assembling and welding on the precision of the dimension, shape and position of the inner cavity are reduced, and the forming precision of the inner cavity is improved; the waveguide tube part is subjected to once weld forming, so that welded joints of the inner cavity are decreased; the difficulty in welding is reduced; the stability of the welding quality is improved; and the welding efficiency is improved.

Description

technical field [0001] The invention relates to a bending forming method of a chamfered waveguide, which belongs to the technical field of waveguide forming. Background technique [0002] Generally, angle-cutting bend waveguide is used to realize microwave channel connection. The common bend waveguide structure design and process methods include integral forming, waveguide plus flange welding forming process technology. Due to the low overall processing efficiency and high cost, the waveguide and flange welding forming structure is preferred under the condition that the design accuracy can be satisfied. [0003] In the prior art, the chamfered bend waveguide welding structure such as figure 1 As shown, its composition diagram is shown in figure 2 As shown, the angle-cut bend waveguide is composed of waveguide 1, waveguide 2, blocking plate 3, flange 4 and flange 5, and the waveguide uses waveguide 1, waveguide 2 and blocking plate 3 through secondary welding shaped like ...

AI Technical Summary

Problems solved by technology

The disadvantage is that the waveguide part is tailor-welded in three pieces, and there are many splicing surfaces. The forming accuracy of the inner cavity is affected by factors such as the dimensional tolerance of the two waveguides, the assembly positioning accuracy, and the welding accuracy. After welding, the dimensional stability of the inner cavity is low, and it is easy to appear Quality problems such as out-of-tolerance inner cavity size and dislocation of splicing surfaces affect performance

However, the design of the inner cavity positioning tool is difficult and the operation convenience is poor; the waveguide part needs secondary welding, which is difficult to weld, and there are seven welding seams in the inner cavity, and the probability of welding defects is relatively high

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