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Method for manufacturing tube shell of traveling wave tube

A manufacturing method and technology for traveling wave tubes, which are applied in the manufacture of ships or lead-in wires, and tubes/containers of transit-time electron tubes, etc., can solve the problems of insufficient tube and shell accuracy, poor air tightness, etc., and achieve low cost, Simple to use effects

Inactive Publication Date: 2009-12-30
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a method for manufacturing a tube shell, which overcomes defects such as insufficient precision and poor airtightness of the tube shell made in the known technology, and manufactures a helical traveling wave tube metal tube with high vacuum airtightness shell

Method used

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  • Method for manufacturing tube shell of traveling wave tube
  • Method for manufacturing tube shell of traveling wave tube

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Embodiment Construction

[0019] The principle of the technical scheme of the present invention is to use the pipe with a size margin, the inner diameter is guaranteed by the precision of the core rod, and the outer diameter is guaranteed by the extruded metal ball, so that the internal and external forces of the pipe are extruded and deformed, and at the same time, the length direction is ensured. Concentricity and dimensions.

[0020] refer to figure 1 , showing the schematic diagram of the shrinkable inner diameter fixture. There are four high-strength and high-precision metal balls 5 in the shrinkable fixture described in the figure. gap;

[0021] When the fixture fixes the upper base 3, the lower base 1 is rotated to reduce the distance between the two, and drives the retractable lower pressing block 2 to move, reducing the gap between the retractable lower pressing block 2 and the retractable upper pressing block 7, 4 is Operate the air hole of the fixture, the slopes of 2 and 7 drive the metal...

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Abstract

The invention discloses a method for manufacturing a tube shell of a traveling wave tube, and belongs to the manufacturing field of microwave vacuum devices. The method comprises the following operation steps: sleeving an annealed tube on a core rod, and coating lubricating oil between the core rod and the tube; assembling a clamp component with shrinkable inside diameter; and putting the tube with the core rod into the clamp component with the shrinkable inside diameter, and shrinking the inside diameter of the clamp by using an extruding method. The manufactured tube shell can ensure that the precision of the inside diameter is within 0.005 millimeter and the concentricity is within 0.008 millimeter on long size, and can ensure vacuum air tightness; and the manufacturing process has simple operation and low cost.

Description

technical field [0001] The invention belongs to the field of microwave electric vacuum device manufacturing, and in particular relates to a manufacturing method of a traveling wave tube shell. Background technique [0002] The most common type of traveling wave tube is the helical traveling wave tube. The main component of the high frequency part is the slow wave structure. The shell outside the slow wave structure is required to be vacuum-tight, and the inner and outer diameters and concentricity of the shell are very different. High precision requirements, the general tolerance is within 0.01mm. At the same time, the shell also has the characteristics of slenderness, that is, the diameter is small and the length is long. The diameter is generally 3-6mm, and the length is generally within the range of 40-100mm. The conventional machining length is too long, and the inner diameter accuracy and concentricity accuracy cannot be achieved. Meet the design requirements; use nume...

Claims

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Application Information

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IPC IPC(8): H01J9/24H01J23/12
Inventor 吴华夏贺兆昌张文丙朱刚周秋俊董晨白卫星薛正余
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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