JPH0410400A - Standing-wave accelerating tube - Google Patents

Abstract

PURPOSE:To facilitate high-precision welding by forming a pointer for positioning the rotation axis of a combining cavity main-body while also retaining the rotation axis with the aid of a welding jig in the center of the mutual welding orbit of the combining cavity main-body and a combining cavity covering-body both being welded together. CONSTITUTION:A combining cavity covering-body 8 is engaged with an opening in a combining cavity main-body 7, then a tapered center hole 15 as a pointer formed by boring the combining cavity main-body 7 so that the common center line of the engaged bodies may be highly precisely squared with the rotation axis of the combining cavity main-body 7 is used as a support to fit in a welding jig and the mutual joining portion of the engaged bodies is then welded with rotating the welding jig on the rotation axis through a process of electron beam welding. The mutually joined line of the combining cavity main-body 7 and the combining cavity covering-body 8 is accordingly squared with very high precision with the welded orbit of the engaged bodies formed through the process of electron beam welding, so that the combining cavity main-body 7 may be very precisely welded to the combining cavity covering-body 8. This permits adopting the process of high-prevision electron beam welding.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a standing wave accelerator tube using an electron beam welding process for welding a combined cavity main body and a combined cavity lid of a combined cavity. It is something.

[Conventional technology]

FIG. 5 is a sectional view showing the main parts of a conventional standing wave accelerator tube, and FIG. 6 is a side view thereof. In the figure, 1 forms the accelerating air body of the standing wave accelerating tube? ! 2 is an acceleration cavity formed inside an acceleration cavity body in which these acceleration cavity members 1 are stacked. Reference numeral 3 denotes a joint portion where the stacked acceleration cavity members 1 are joined to each other, for example, by brazing.

4 is an arrow indicating the addition direction of charged particles accelerated within the acceleration cavity 2, and 5 is a coupling cavity communicating with the acceleration cavity 2. Reference numeral 6 designates a joint cavity forming the joint cavity 5, 7 represents the joint cavity main body, and 8 represents a joint cavity lid. Reference numeral 9 denotes a joint portion for fixing the joint cavity body 6 to the acceleration cavity member 1, for example, a soldering joint or the like is used. 1
0 is a tuner section attached to this combined air body 6, and 11 is its installation chamber.

Next, its manufacturing and assembly will be explained. Here, FIG. 7 is a front view and a 1-diameter cross-sectional view of the combined air body 6.

Without further ado, the coupling cavity lid 8 is fitted to cover the opening of the coupling cavity main body 7, thereby forming the coupling cavity 5 inside. Reference numeral 12 denotes an air vent hole for venting air from the joint cavity 5 during welding or the like. In this way, the cavity lid 8 is connected to the opening.
The joint cavity main body 7 fitted with the chucking jig is gripped by a chucking jig, and the joint portions are joined by brazing or the like while rotating the chucking jig. Reference numeral 13 indicates a joint portion formed by brazing or the like.

The thus welded combined air body 6 is cut along the cutting line 14 as shown in FIG.
The mounting hole 11 is machined. On the other hand, by overlapping a number of heating cavity sections 1 and fixing them to each other at the joining section 3 by brazing or the like, a reheating cavity body is constructed. The combined hollow body 6 cut along the cutting line 14 is joined to the acceleration cavity member 1 of the hollow hollow body at the joining portion 9 by brazing or the like.

Thereafter, the tuner section 10 is attached to the attachment hole 11 of the combined air body 6, and the standing wave acceleration tube is completed.

[Problem to be solved by the invention]

Since the conventional standing wave agitation pipe is horizontally drawn as described above, the joint cavity main body 7 and the joint cavity cover body 8 are joined by brazing, etc., and are not required in the subsequent process. Brazing has an explosive charge, and a high-temperature brazing material is used as the brazing material, and the brazing material and brazing have a high sound level due to the explosive, and the brazing has a high temperature for the explosive, and the bonding cavity body 7 and the bonding Three problems were found: not only did the material of the cavity cover 8 deteriorate due to the high temperature and the electric gas in the atmosphere, but also the duration of the explosive charge was extended.

In order to M'A these fillers, welding using an electron beam with a sharp heat source may be considered, but when rotating welding by gripping the outer diameter of the joint hollow body 6 with a chucking jig, The deviation between the joint between the cavity body 7 and the combined cavity lid 8 and the welding trajectory by the electron beam is 0.1 mm.
Not only is it necessary to align the rotational axis with high accuracy, such as to ensure that the welding temperature is within There were problems such as an increase in the temperature difference, deformation of the combined air body, deterioration of dimensions, and worsening of surface roughness.

This invention was made in order to eliminate the ff[ mentioned in 2 above, and it does not cause deterioration of the material and can be manufactured at low cost.
The object of the present invention is to obtain a standing wave accelerator tube that has a short fT interval and can be welded with high precision.

[Means to solve the problem]

Regarding this invention! Child beam welding method, 2! : is a pointer provided at the center of the welding trajectory of at least one of the bonding cavity body and the bonding cavity mass to be welded, for positioning the axis of rotation thereof and also for holding it with a welding jig. be.

[Effect]

The pointer in this invention serves as a reference for positioning the rotating shaft when holding the combined hollow body in a welding jig, and also acts as a support when holding it in the welding jig, thereby enabling high-precision electron beam welding. It became possible to hire, and production '9
To realize a permanent wave filter pipe that can be constructed in a short period of time, reduces costs, and does not cause material deterioration.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. Father-in-law 1
In the figure and FIG. 2, l is an acceleration cavity member, 2 is an acceleration cavity, 3 and 9 are joint parts, 4 is an addition direction of charged particles,
5 is a combined cavity, 6 is a combined cavity, 7 is a combined cavity body, 8
10 is the coupling cavity cover body, 10 is the tuner part, and 11 is its mounting hole, which are the same or equivalent parts as those in the joint with the same number 71 in FIGS. 5 and 6, so detailed explanation will be provided. omitted. Further, 15 is on the outer surface of the coupling cavity main body 7,
A tapered center hole is bored as a pointer so that its center line coincides with the rotation axis of the coupling cavity body 7 at a high degree of tintness.

Next, I will explain about its manufacture and preparation. Here, FIG. 3 is a front view and a sectional view of the combined air body 6.

First, the coupling cavity cover 8 is fitted into the opening of the coupling cavity main body 7, and the welding jig is fitted using the center hole 15 as a support.

In this case, a protrusion is provided on the rotating shaft of the welding jig to fit snugly into the center hole I5. As a result, the combined hollow body 6 is held by the welding jig, and at the same time, the rotation axis is aligned with high precision.

Next, while the welding jig is rotated about the rotation axis, the joints are explosively welded by electron beam welding. Therefore, the joining line between the joint cavity main body 7 and the joint cavity lid 8 coincides with the welding trajectory by the electron beam welding method with high precision, and the joint line between the joint cavity main body 7 and the joint cavity lid 8 coincides with the welding trajectory by the electron beam welding method. 8 are brought into explosive contact with high precision. Reference numeral 16 in the figure indicates this electron beam welding section.

In this case, since the center hole 15 is bored in the center of the joint cavity main body 7, it will not have a negative effect on the characteristics and performance of the joint cavity body 6. In addition, since the joint cavity main body 7 is held by the center hole 15 provided in the center during welding, the joint cavity body 6 is not deformed due to the influence of heat, such as when gripped with a chucking jig. There is no possibility that the dimensions will deteriorate or the surface roughness will deteriorate.

As in the conventional case, the combined air body which has been subjected to electron beam blast contact in this way is cut along the cutting line 14 as shown in FIG. It is brought into contact with the acceleration cavity member 1 of the fuselage. Thereafter, the tuner section 10 is attached to the attachment hole 11 of the combined air body 6 to complete the standing wave acceleration tube.

Here, the cavity frequency adjustment I! of the coupling cavity! In (squeeze), if this center λ15 is used for center positioning, it becomes possible to produce a homogeneous explosive charge very easily.

In the above embodiments, a tapered center hole is used as the pointer, but it may also be a ground type center hole, or a protrusion such as a pointed cane or a circle Mt. Furthermore, it may be provided on the coupling cavity cover body instead of the coupling cavity body, or may be provided on both of them, and in either case, the same effects as in the above embodiment can be achieved.

[Effects of the Invention] As described above, according to the present invention, the pointer is used to position the rotation axis of the combined hollow body, and to hold it in the welding jig, and while rotating it around the rotation axis. Since it was configured to form a combined hollow body by explosively welding it on the welding trajectory using the electron beam welding method, the combined hollow body was deformed due to the influence of aging, as in the case of gripping with a 5 chucking jig.
There is no deterioration in welding accuracy or surface roughness, and it is now possible to use high-precision electron beam welding, which shortens machining time and reduces costs. This has the effect of providing a standing wave accelerator tube whose material does not deteriorate.

[Brief explanation of the drawing]

FIG. 1 is a four-sectional view showing the main parts of a standing wave accelerator tube according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. Front view and ■
4 is a front view showing the cutting process, FIG. 5 is a 4-sectional view showing the main parts of a conventional standing wave accelerator tube, FIG. 6 is a side view, and FIG. 7 is a diagram showing its manufacturing process. 1 is a front view and a sectional view of the combined cavity for explaining the assembly, and FIG. 8 is a front view showing the cutting process. 2 is an additive cavity, 5 is a combined cavity, 6 is a combined cavity, 7 is the coupling cavity body, 8 is the coupling cavity lid, and 15 is a pointer (center hole). In the drawings, the same reference numerals indicate the same or equivalent parts. (2 others)

Claims (1)

[Claims] A combined cavity main body and a combined cavity lid are welded along a predetermined welding trajectory to form a combined cavity having a combined cavity therein, and the combined cavity of the combined cavity is accelerated inside the cavity. In a standing wave acceleration tube that communicates with an acceleration cavity formed in A standing wave acceleration tube characterized in that a pointer is provided for fitting to hold the combined hollow body and to position a rotation axis of the combined hollow body.