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Core bar for high-pitch precision spiral line and manufacturing method of core bar

A technology of helical wire and core rod, which is applied in coil manufacturing, discharge tube/lamp manufacturing, cold cathode manufacturing, etc., can solve problems such as inability to meet process requirements, avoid difficulty in controlling radial dimensions, ensure straightness and appearance The effect of diameter accuracy

Active Publication Date: 2012-07-18
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing core rods and their manufacture are still unable to meet the above process requirements

Method used

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  • Core bar for high-pitch precision spiral line and manufacturing method of core bar
  • Core bar for high-pitch precision spiral line and manufacturing method of core bar
  • Core bar for high-pitch precision spiral line and manufacturing method of core bar

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Embodiment Construction

[0029] Depend on Figure 1-2 It can be seen from the combination of the shown structures that the core rod used for the high-pitch precision helix is ​​a slender linear structure, which sequentially includes a process section 1, a hole-like structure 2, a spiral winding section 3, a plane structure 4 and a process section. 1. The spiral winding section 3 is located in the middle position, one end of which is the hole-like structure 2, and the other end is the plane structure 4. The other end of the hole-like structure 2 and the plane structure 4 is the process section 1; The diameter is slightly smaller than the outer diameter of the helical winding section 3. The length of the hole-like structure 2 depends on the size of the winding helix clamp, which is generally 15mm-20mm. The hole-like structure 2 is provided with a through hole, and the axis of the through hole is the same as The axes of the hole-like structure 2 intersect vertically; the outer diameter of the plane struc...

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Abstract

The invention discloses a core bar for a high-pitch precision spiral line and a manufacturing method of the core bar. The core bar comprises a process section (1), a porous structure (2), a spiral line coiling section (3), a planar structure (4) and a process section (1), wherein the spiral line coiling section (3) is positioned in the middle position; one end of the spiral line coiling section (3) is of the porous structure (2), the other end of the spiral line coiling section (3) is of the planar structure (4), and the other end of the porous structure (2) and the other end of the planar structure (4) are the process sections (1); and the diameter of each process section (1) is same as that of the spiral line coiling section (3), and the outer circumference surfaces of each process section (1) and the spiral line coiling section (3) are provided with coatings (5). According to the core bar for the high-pitch precision spiral line, with the special structure, in the axial direction of the core bar, one end of the core bar is of the porous structure, and a strip material of the spiral line is inserted into a hole and begins to be coiled when the spiral line is coiled; and after coiling is finished, the spiral line can be fixed by a step of the planer structure at the other end, and thus the problem of fixing the spiral line during coiling is solved.

Description

technical field [0001] The invention relates to the manufacturing field of slow-wave components of traveling wave tubes in microwave electric vacuum, in particular to a core rod used for a high-pitch precision helix and a manufacturing method of the core rod. Background technique [0002] In the field of microwave electric vacuum, the traveling wave tube is the best device that combines bandwidth and gain. Among them, the helical traveling wave tube is the most widely used. Its high-frequency circuit is generally a helical wire or metal strip. Three or more dielectric rods are clamped and fixed in a metal tube casing. The basic function of the helical wire is to provide a high-frequency electromagnetic wave with an axial propagation speed close to the electron motion speed and a sufficiently strong axial electric field, so that the electromagnetic wave interacts with the electron beam to amplify the signal. The metal wire is called a helix, which is the carrier of high-freq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/00H01F41/06B23P15/00H01F41/098
Inventor 张文丙朱刚刘志意谢智能白卫星王瑞苏靖董晨
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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