KR20190008821A - A Machining Tool for a Cell Unit of a Particle Accelerator and the Method for Producing the Same - Google Patents

Abstract

The present invention relates to a machining tool for a cell unit for an accelerator and a method for manufacturing a cell unit for an accelerator thereby, and more specifically, to a machining tool for a cell unit for an accelerator and a method for manufacturing a cell unit for an accelerator thereby which machines a cavity of a curved surface structure formed at a cell unit for an accelerator. The machining tool for a cell unit for an accelerator according to the present invention comprises: a wearing unit (11) which is extended in a fan shape; an insert unit (12) which is formed at one end part of the wearing unit (11); and a machining tip (13) which is fixated at an end part of the insert unit (12), and which has a width at least identical to the insert unit (12), wherein a protruding part (131) is formed.

Description

Technical Field [0001] The present invention relates to a machining tool for a unit cell for an accelerator, and a method for manufacturing a unit cell for an accelerator,

The present invention relates to a processing tool for a unit cell for an accelerator, and a method for manufacturing the unit cell for an accelerator, and more particularly to a processing tool for an accelerator unit cell for processing a cavity of a curved surface structure formed in the unit cell for an accelerator, And a method of manufacturing the unit cell for an accelerator.

The high frequency electron accelerator applied to the security detector of the container, the radiation medical instrument or the nondestructive inspection equipment includes an electron gun for electron beam generation, a high frequency acceleration tube for acceleration of the electron beam, a high frequency generator for supplying high frequency to the high frequency acceleration tube, A pulse power source, and a target that generates x-rays by collision of an electron beam. Each of the devices constituting the electron accelerator is required to be precisely controlled, and the high frequency acceleration tube, in which a plurality of unit cells are coupled to each other, needs to have a precise geometric structure for accelerating the electron beam.

Japanese Patent Application Laid-Open No. 10-2013-0129815 discloses an electron beam generating unit for generating an electron beam by using a CNT chamber as an electron beam emission source, an acceleration tube accelerated by an electron beam incident thereon, And a high frequency generator for applying high frequency waves having different powers to the electron beam generator and the acceleration tube. Patent Publication No. 10-2014-0086859 also discloses a direct current high voltage electron gun arranged to generate an electron beam; A pulse power source arranged to provide a main pulse power signal; A power divider for dividing a main pulse power signal output from a pulse power source into a first pulse power signal and a second pulse power signal; A first acceleration tube for accelerating the electron beam using the first pulse power signal; A second acceleration tube for accelerating the electron beam using a second pulse power signal; And a phase shifter that continuously adjusts the phase difference between the first pulse power signal and the second pulse power signal such that the output of the second acceleration tube produces an accelerating electron beam whose energy is continuously adjusted. do.

In an electron accelerator, an acceleration tube needs to have a structure suitable for forming a standing wave, a breakdown voltage, an RF characteristic, or an electric field or a magnetic field and thereby determining the characteristics of an accelerated electron beam. Particularly, the resonance characteristics of the electron beam can be determined by the geometry of the cavity formed in the accelerator cell, and the geometry is difficult to be processed by known processing tools. Therefore, a machining tool suitable for the cavity of the accelerator cell needs to be developed, and prior art or publicly known technology does not disclose such machining tool.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Patent Publication No. 10-2013-0129815 (Korea Atomic Energy Research Institute, published on Nov. 29, 2013) Electron Beam Generator Prior Art 2: Patent Publication No. 10-2014-0086859 (Tsinghua University, published on Jul. 08, 2014) Standing wave electron linear accelerator apparatus and method thereof

It is an object of the present invention to provide a processing tool for forming a resonant cavity or coupling cavity of an accelerator cell and a method of manufacturing an accelerator cell therefrom.

According to a preferred embodiment of the present invention, a processing tool for a unit cell for an accelerator and a method for manufacturing the unit cell for an accelerator by the same include a linearly extending wear unit; An insert unit formed at one end of the wear unit; And a machining tip which is fixed to an end of the insert unit and has at least the same width as the insert unit and has a protruding portion.

According to another preferred embodiment of the present invention, the protruding portion becomes a plate shape, and the contact portion becomes a curved shape or a linear shape.

According to another preferred embodiment of the present invention, the machining tip has an inclined side structure.

According to another preferred embodiment of the present invention, the machining tip is diamond or cemented carbide.

According to another preferred embodiment of the present invention, there is provided a method of manufacturing a plasma display panel, comprising the steps of: machining a surface of a cell material for a unit cell for an accelerator; Preparing a machining tool having a machining tip which is generally planar and whose contact portion is a curved or straight shape; Forming a processing path for forming a resonant cavity or coupling cavity; A step of linearly moving the processing tool as the cell material or the processing tool rotates; And forming a resonant cavity or coupling cavity by the rotation and linear movement.

The processing tool according to the invention allows the resonant cavity or coupling cavity of the accelerator cell to be made into a defined geometrical shape. Thereby allowing the accelerator cell processed by the processing tool to absorb energy according to the resonance in a predetermined frequency band. The processing tool according to the present invention is applied to accelerator cells of various sizes so that the surface roughness or radius of curvature of the resonant cavity can be made to conform to the particle acceleration conditions of the accelerator. The method of manufacturing a unit cell according to the present invention allows the side surface of a material to be fixed to form a surface, thereby maintaining the physical properties of the material during processing. Further, the unit cell according to the present invention can be applied to accelerators of various structures or acceleration tubes for generating various bands of X-rays.

1 shows an embodiment of a processing tool for machining a resonant cavity or coupling cavity of an accelerator cell according to the present invention.
2 shows another embodiment of a machining tool for machining a resonant cavity or coupling cavity of an accelerator cell according to the invention.
3A and 3B show another embodiment of a processing tool according to the present invention.
4A shows an embodiment of a method of processing an accelerator cell to which a processing tool according to the present invention is applied.
4B shows an embodiment of a machining apparatus to which a machining tool according to the present invention is applied.
FIG. 5 illustrates an example of a process of curving a surface in the processing method according to the present invention.
Figure 6 shows an embodiment of an accelerator cell embodied by a processing tool according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

1 shows an embodiment of a processing tool for machining a resonant cavity or coupling cavity of an accelerator cell according to the present invention.

Referring to FIG. 1, a method of processing a unit cell for an accelerator includes a linearly extending wear unit 11; An insert unit (12) formed at one end of the wear unit (11); And a machining tip (13) which is fixed to an end of the insert unit (12) and has at least the same width as the insert unit (12) and in which a protruding part (131) is formed.

The accelerator cell may be a structural unit forming an accelerator tube of an accelerator capable of generating X-band or S-band X-rays, and may be applied to an acceleration tube for generation of X-rays of various bands. Two unit cells may be combined to form one accelerator cell, and a plurality of accelerator cells may be coupled to each other to form an acceleration tube. The accelerator cell can form a half Accelerating Cavity-Side Coupling Cavity (AC-SC) of the accelerator tube, and the two unit cells are coupled together by a method such as brazing or brazing to form a resonant cavity. Can be formed. The unit cell can be applied to accelerator tubes of various kinds of accelerators.

The wearing unit 11 may be formed in various structures that can be mounted on a position adjustable apparatus, and may be, for example, a tubular shape extending as a whole. The wearing unit 11 is formed into a structure in which a part of the circular shape becomes a linear shape while having a circular cross section as a whole, and can be stably mounted on the apparatus. The linear portion can extend along the longitudinal direction of the wear unit 11 to form the fixing surface 112. A connecting portion 113 having a conical shape may be formed at one end of the wearable unit 11 so as to be gradually reduced in radius. And the insert unit 12 may be coupled or formed at the end of the connection portion 113. [

The insert unit 12 may have a linear extending structure having a circular cross section, and may be a cylinder shape having a flow path formed therein. A discharge path may also be formed in the wear unit 11 which is connected to the flow path. The insert unit 12 may be formed to have an extension length and a diameter that are related to each other, but may be formed to be, for example, an extension length: diameter = 10: 2 to 4, but is not limited thereto. For example, the length of the insert unit 12 may be from 5.6 to 6, and the diameter may be from 1.6 to 2.0. The insert unit 12 may be composed of a depth forming portion 121 and a tip fixing portion 122 and the tip fixing portion 122 may be in the shape of a truncated cone similar to the connecting portion 113 but is not limited thereto.

The machining tip 13 can be coupled to the upper portion of the tip fixing portion 122 and can be formed into the depth forming portion 121 while forming the protruding portion 131 protruding forward of the truncated tip fixing portion 122 And may be coupled to the insert unit 12 in an extended form. 1, a stepped coupling surface CS may be formed on the upper surface of the tip fixing portion 122 from the end of the depth forming portion 121, and the machining tip 13 may be coupled Can be fixed to the surface CS. 1, the insert unit 12 may have a semi-cylindrical shape in which one side of the cylinder is cut along the longitudinal direction as a whole, and the machining tip 13 is joined to the upper portion of the cylindrical shape . In this structure, a flow path is not formed in the insert unit 12, and an inlet hole 114 may be formed at the end of the connection portion 113. Then, the chips generated in the machining process can be discharged through the inlet holes 114, or cooling water for removing heat generated in the machining process can be supplied.

According to one embodiment of the present invention, the machining tip 13 may have a beveled side structure. Further, the protruding portion 131 of the machining tip 13 becomes a plate shape, and the contact portion becomes a curved shape or a linear shape.

The machining tip 13 can be made of artificial or natural diamond or can be made of cemented carbide. The front end of the processing tip 13, which is in contact with the accelerator cell material, may have a curved shape such as a semicircular shape or a curved or straight shape having a very large curvature radius as described below .

1, the machining tip 13 can be fixed to the engagement surface CS, which is stepped at the end of the insert unit 12, and a part of the thickness can be fixed to the insert unit 12 For example, 1/4 to 4/5 of the thickness may protrude into the upper plane of the insert unit 12. [0031] The width of the machining tip 13 may be equal to or greater than the width of the insert unit 12 and may have a size of, for example, 10/10 to 15/10 with respect to the width of the insert unit 12. The machining tip 13 may also have a semicircular shape or a similar curved shape from the end of the depth forming portion 121 of the insert unit 12 while extending in a rectangular shape at a portion corresponding to the insert unit 12. [ For example, a semicircular shape or similarly convexly curved surface that protrudes forward, and a curved portion may be formed with a radius of curvature of 0.9 to 1.5 mm and a circumferential angle of 90 to 94 degrees in both directions from the center have.

As shown in the lower part of Fig. 1, the machining tip 13 may be formed as a rectangle as viewed from the front, and both sides forming the thickness may be inclined inward as it goes downward. Accordingly, the width of the upper surface of the processing tip 13 can be larger than the width of the lower surface, and a clearance angle can be formed as indicated by an arrow at the lower right of FIG. The clearance angle may be, for example, an angle of 1 to 5 degrees, for example, and may preferably be 1.5 to 3 degrees. The upper plane of the processing tip 13 may be disposed at a position where the circular cross section formed at the end portion of the connection portion 113 is vertically bisected, but is not limited thereto.

The structure of the insert unit 12 or the machining tip 13 described above is for the curved machining of resonant cavities or coupling cavities, and in particular enables the resonant cavities or coupling cavities to be machined by a single process.

Another embodiment of a machining tool that allows resonant cavities or coupling cavities to be machined by one such process is described below.

2 shows another embodiment of a machining tool for machining a resonant cavity or coupling cavity of an accelerator cell according to the invention.

Fig. 2 can be made in the same or similar structure as the embodiment shown in Fig. 1 and comprises, for example, a wear unit 11; An insert unit (12); And a machining tip 13, and the machining tip 13 may comprise diamond or a cemented carbide. The structures having the same or similar structures are not specifically described or are omitted below. However, the structure described below is not necessarily different from that of FIG. 1, and the structure described in FIG. 2 can be applied to the embodiment of FIG.

The machining tip 13 may be disposed on the engaging surface CS and the front surface of the machining tip 13 may be an inclined surface. For example, the entire thickness of the processing tip 13 may be 0.4 to 0.8 mm, and the inclined surface may form an inclination angle LA of 3 to 8 degrees with respect to a direction perpendicular to the upper surface. Further, the processing tip 13 may be formed of a side extending portion extending in the longitudinal direction and a protruding portion 131 extending in the width direction. Unlike the embodiment of FIG. 1, the protruding part 131 may have a curved shape with a very large radius of curvature, or may have a straight shape, and the side extending part and the protruding part 131 may be connected in a curved shape. For example, when the width of the processing tip 13 is 2.5 to 3.0 mm, the width of the protruding portion 131 may have a contact length SL of 0.8 to 1.2 mm, but is not limited thereto.

The processing tip 13 may have various structures for forming resonant cavities or coupling cavities of the accelerator cell, and is not limited to the embodiments shown.

Referring to the middle portion of FIG. 2, the connecting portion 113 may have a truncated cone shape, and the truncated cone SA of the truncated cone may be 50 to 70 degrees. 2, the side extension may be of a shape that narrows in the direction of the wear unit 11, for example the side extension tilt angles C1, C2 may be the same as the extension of the insert unit 12 But it is not limited thereto. Such side extended inclination angles C1 and C2 can be formed with the same or similar size with respect to the allowance angle of the embodiment shown in Fig.

The structure of the insert unit 12 or the machining tip 13 shown in FIG. 1 or 2 allows the acceleration cavity or coupling cavity having a concave curved shape to be machined to have a predetermined geometrical structure.

The machining tip 13 can be made in a variety of configurations and can be coupled to various types of insert units 12.

Figs. 3A and 3B show another embodiment of the processing tool according to the present invention, and Figs. 3 (A), 3 (B) and 3 (C) show a perspective view, a rear view and a side view, respectively.

Referring to FIG. 3A, the processing tip 13a includes a tip body 32 having a rhombic shape as a whole; A tip portion 31 forming a rhombic one-corner portion of the tip body 32; And an inclined side surface 33. [ The mutually facing surfaces of the tip body 32 may have different areas, so that the circumferential surface can form the inclined side surface 33. The inclined side surface 33 may form an inclined surface of, for example, 5 to 40 degrees, but is not limited thereto. The tip portion 31 may form a stepped surface with respect to the tip body 32 and may be coupled to the tip body 32, for example, by brazing or the like. The tip portion 31 can be made of a material such as natural or artificial diamond, and the tip can be made in a cutter structure. A fixing hole 34 for fixing the insert unit 12 to the tip body 32 may be formed at a central portion thereof.

Referring to FIG. 3B, the wear unit 11 can be made in a linear structure, and the insert unit 12 can be made in a bent shape with respect to the linearly extending wear unit 11. FIG. The insert unit 12 may be bent at an angle of, for example, 30 to 60 degrees, and may have a triangular-shaped insertion fixing groove. The machining tip 13a can be fixed to the insertion fixing groove by a fixing means 35 such as a screw or a pin and in a fixed state the tip portion 31 can be projected forward and brought into contact with the cell material. The insert unit 12 is bent so that the tip portion 31 is tilted in the course of the rotation, thereby reducing the friction. At the same time, in the process of forming the acceleration cavity or the coupling cavity, waves are prevented from being created.

A process for manufacturing a unit cell for an accelerator by the above-described processing tool will be described below.

4A shows an embodiment of a method of processing an accelerator cell to which a processing tool according to the present invention is applied.

Referring to FIG. 4A, a method of processing an accelerator cell includes a step (P42) of processing a surface of a cell material for an accelerator unit cell; A step (P43) of preparing a machining tool having a machining tip whose planar shape as a whole becomes a curved or linear shape of the contact portion; Forming a machining path for forming a resonant cavity or coupling cavity (P44); A step (P45) in which the processing tool is linearly moved as the cell material or the processing tool rotates; And forming a resonant cavity or coupling cavity by the rotation and linear movement (P46).

The unit cell may be a structural unit forming an acceleration tube of an accelerator capable of generating X-band or S-band X-rays, but is not limited thereto and may be applied to an acceleration tube for generation of X- have. The unit cell can form a half Accelerating Cavity-Side Coupling Cavity (AC-SC) of the accelerator tube, and the two unit cells are coupled together by a method such as brazing or brazing to form a resonant cavity. Can be formed. The unit cell can be applied to accelerator tubes of various kinds of accelerators.

The cell material should be prepared for the production of the unit cell, and the cell material may be made of, for example, oxygen free copper having a purity of 99.9% or more, but not limited thereto. The cell material can be made from a powder form and can be a rectangular plate shape having a thickness face. The powder material may have a maximum diameter of, for example, 85 占 퐉 or less, and may be put into a mold having a predetermined shape to be made into a cell material. The cell material thus formed may contain up to 10 ppm oxygen or similar gas. When the cell material is prepared in this manner (P41), the surface of the cell material can be processed (P42). The surface treatment of the cell material can be done by various cutting tools and can be machined by a single crystal diamond in a cutting machine or a lathe. The material surface can be processed, for example, to have a shape error of ± 1 to ± 6 μm, preferably ± 1 to ± 2.5 μm, and can be processed to have a surface roughness Ra of 0.01 to 0.05 μm.

It is necessary to prevent the occurrence of thermal deformation or residual stress of the material during surface processing of the material or processing of the cavity. It is also necessary to avoid the occurrence of burrs or waviness due to the deviation of the processing tool or the cell material from the processing position. For this purpose, it is advantageous that the contact surface between the fixing jig and the material for fixing the material during the surface processing is reduced. For example, the cell material may be fixed to the jig while the lower portion thereof is in contact with the fixing jig on both sides of the thickness surface. With such a fixed structure, the cell material can be machined on both sides at a fixed position. Thus, the thickness deviation can be reduced at different positions of the processed unit cells.

The thickness variation of the cell material may be in the range of ± 1 to ± 6 μm, preferably ± 1 to ± 2.5 μm, similar to the shape error, and the flatness is 0.0001 to 0.1 mm, preferably 0.006 to 0.05 mm, Lt; RTI ID = 0.0 > mm. ≪ / RTI > Flatness refers to the level of inclination measured relative to a straight line in all directions relative to a point relative to a baseline. Or a height difference between a point which becomes the highest height in one plane and a point which becomes the minimum height.

When the surface of the cell material is processed according to predetermined conditions, a processing tool for processing the cavity can be prepared (P43). The machining tool may be a machining tool having the same or similar structure as the embodiment shown in Fig. 1 or Fig. For example, the machining tool may be a machining tip in which the contact portion becomes a curved shape or a straight shape while being entirely planar. Machining tips can be made of Mono Crystalline Diamond or Poly Crystalline Diamond, or made of a carbide titanium alloy or similar strength material. When such a processing tool is prepared, the cell material and the processing tool can be fixed to a predetermined device or position.

The cell material may be secured to a stationary tool, such as a spindle, for example, and the stationary tool may be rotated by a device such as a speed adjustable motor. A mounting groove for fixing the cell material can be formed in the stationary tool and one side of the cell material can be fixed to the mounting groove so as to face each other. The processing tool may be arranged to face the stationary tool and be arranged to be capable of rotation or linear movement. The machining tool can also be preferably arranged in a machine capable of 5-axis machining.

When the arrangement of the cell material and the processing tool is determined, the tool feed path can be set (P44). The tool transfer path refers to relative movement relative to the cell material and includes movement or rotational movement of the cell material. The tool transfer path means a linear travel path from the circumferential surface of the acceleration cavity or from the circumference to the center of the acceleration cavity. The tool or material can be moved as it rotates, and the tool can contact the material at various angles for surface processing. The tool transfer path refers to the relative movement path of the cutting byte of the tool to the workpiece.

When the tool transfer path is set, an accelerating resonance hole or a side coupling cavity can be formed (P46) while the workpiece or the tool is rotated while the relative distance between the workpiece and the tool is adjusted (P45).

The cell material and the processing tool form a linear path from one point to the center of the circumferential surface of the cavity and the cell material can be rotated at a predetermined rate in the course of moving to a linear path. It is necessary to prevent the residual stress from being generated by controlling the pressure applied to the surface of the material in the process of processing the surface of the material including the surface of the cavity. At the same time, it is necessary to prevent burrs or waviness from occurring in the direction perpendicular to the moving direction of the blank or in the circumferential direction. When the material becomes copper and the hardness becomes (20 to 60) HV30, the rotation speed of the material becomes 100 to 1,500 rpm, preferably 300 to 1,000 rpm, and most preferably 600 to 800 rpm, The relative linear moving speed of the tool relative to the tool may be 0.0001 to 0.02 mm / rev, preferably 0.0005 to 0.01 mm / rev, most preferably 0.0005 to 0.005 mm / rev. Under such conditions, the accelerated resonant cavity or side coupling process can be formed by a single process. Accelerated resonant cavities may be formed on one surface of the workpiece, and side coupling cavities may be formed on other surfaces of the workpiece. Once the accelerated resonant cavities or side coupling cavities are formed, the tuning holes described below may be formed on the thickness side as required. Then, the unit cell for the accelerator can be completed through an appropriate post-treatment process.

A plurality of unit cells for accelerators may be formed through the same or similar processing process, and a plurality of unit cells may be coupled to each other by, for example, brazing or brazing to form an acceleration tube.

The unit cell for the accelerator may be formed in various ways and is not limited to the illustrated embodiment.

4B shows an embodiment of a machining apparatus to which a machining tool according to the present invention is applied.

4b, the cell material may be secured to the mounting tool 40 for machining of the accelerated resonant cavities or side coupling cavities after the surface or side machining of the cell material is completed, and the mounting tool 40 may, for example, It can be fixed to a tool for fixing a material such as a spindle. The mounting tool 40 may be fixed to the circular surface 411 of the cylinder-shaped fixed cylinder 41 fixed at a position determined by the plurality of fixing chucks 44a, 44b. A fixing groove for fixing the cell material M may be formed on the circular surface 411 as needed, but the fixing groove may be selectively formed.

The front surface of the cell material M faces the processing tool and the rear surface of the cell material M faces the circular surface 411 in order to form the acceleration resonant cavity RC. As shown in FIG. The cell material M may be secured to the circular surface 411, for example, by the flow holes described above. For example, can be fixed to the fixed cylinder 41 by the fixing pins 43a, 43b, 43c, 43d fixed to the circular surface 411 through the flow holes. Depending on the construction of the mounting tool 40, the unworked surface of the cell material M can be kept separate from the circular surface 411 where the cavity RC is formed on one surface.

When the cell material M is fixed to the mounting tool 40, the acceleration resonant cavity RC or the side coupling cavity can be machined by the co-machining tool, and the machining tool is moved along the predetermined tool feed path, The cavity (RC) or side coupling cavity can be machined.

FIG. 5 illustrates an example of a process of curving a surface in the processing method according to the present invention.

5, the machining tool is moved in the depth direction from the front surface FS, in the forward direction (FS) direction inward, again in the inward direction and in the depth direction, Or a side coupling cavity (SC). The cell material M can be rotated during the processing of the cavities AC and SC and the rotation speed of the cell material is, for example, 100 to 1,500 rpm, preferably 300 to 1,000 rpm, and most preferably 600 to 800 rpm .

The processing tool can be moved in the vertical direction and in the horizontal direction with respect to the reference lines BL1 and BL2 while the cell material M is being rotated. The reference lines BL1 and BL2 which form the acceleration resonant cavity AC or the side coupling cavities SC can be determined based on the fastening holes 26. [ Concretely, four fastening holes 26 may be formed on the front face FS or the rear face RS, respectively, and the reference lines BL1 and BL2 are set with reference to the fastening holes 26, and the reference lines BL2, (AC) and the side resonance cavity (SC) while measuring the starting position, curvature radius, vertical depth, horizontal movement distance or center position of the acceleration resonant cavity (AC) and the side resonant cavity (SC) can be machined. The position of the fastening hole 26 in the processing of each unit cell is determined equally and then the acceleration resonant cavity AC and the side resonant cavity SC can be processed based on the fastening hole 26. [ When the unit cells are coupled to each other for forming the acceleration tube, the acceleration resonant cavity (AC) or the side resonant cavity (SC) formed at the precisely matched position can be coupled to each other by machining each unit cell . The relative linear movement speed of the processing tool relative to the cell material M may be 0.0001 to 0.02 mm / rev, preferably 0.0005 to 0.01 mm / rev, most preferably 0.0005 to 0.005 mm / rev. In such a machining process, the machining tool can be linearly moved along one radial direction so as to reach the center from the circumferential surface of the acceleration resonant cavity RC or the side coupling cavity SC to be formed. The linear movement includes a movement in a direction perpendicular to the reference lines BL1 and BL2 which are parallel to the front surface FS or rear surface RS of the cell material M. [ Depending on the shape of the acceleration resonant cavity RC or the side coupling cavity SC to be formed, the processing tool can process the cell material M in a five-axis or similar manner. And thus the acceleration resonant cavity RC or the side coupling cavity RC in which various conditions are required by forming the acceleration resonant cavity RC or the side coupling cavity SC while linearly moving the working tool from the circumferential surface to the center, So that a shape suitable for the SC is formed. Thereby accelerating the electron beam to a required level in the acceleration tube made by the unit cell according to the present invention.

Figure 6 shows an embodiment of an accelerator cell embodied by a processing tool according to the present invention.

Referring to FIG. 6, the accelerator unit cell 20 according to the above-described manufacturing method includes a base body 21 having a thickness surface; And an acceleration resonance cavity 22 formed around a center of a waveguide hole 225 formed so as to penetrate the thickness surface of the base body 21 and the acceleration resonance cavity 22 is formed around the waveguide hole 225 At least two curved portions having different radii of curvature, and curved portions adjacent to each other are connected in a curved shape.

A plurality of unit cells 20 may be connected to each other to form an acceleration tube, and the acceleration tube may be applied to a Compact Linear Colliding Device (CLIC) or a similar accelerator. The unit cell 20 may be a half AC-SC (Accelerating Cavity and Side Coupling Cavity) block and the two unit cells 20 may be coupled together to form one acceleration resonant cavity or a side coupling cavity can do.

The base body 21 may be a rectangular parallelepiped structure having a thickness surface, and has a planar front surface 211; A rear surface 212 formed to be parallel to the front surface 211; And four thickness surfaces 213, 214, and 215 that connect the front surface 211 and the rear surface 212 to form a thickness surface. The front surface 211 and the rear surface 212 may have a flat structure and the flatness of the front surface 211 or the rear surface 212 is 0.0001 to 0.1 mm, preferably 0.006 to 0.05 mm, Lt; RTI ID = 0.0 > mm. ≪ / RTI > Flatness refers to the level of inclination measured relative to a straight line in all directions relative to a point relative to a baseline. Or a height difference between a point which becomes the highest height in one plane and a point which becomes the minimum height. Alternatively, the allowable range of the thickness deviation at two different positions of the base body 21 can be the above-mentioned range.

An acceleration resonant cavity 22 may be formed at one portion of the base body 21 or at another suitable position. The acceleration resonant cavity 22 can be an area where the electron beam is resonated by the RF high frequency energy introduced from the outside, and the energy is absorbed and accelerated. Thus, the geometry of the acceleration resonant cavity 22 becomes a major factor in the design of the unit cell 20. The acceleration resonant cavity 22 may be formed in a concave shape with respect to one surface of the base body 21 and may include a waveguide hole 225 in which an accelerated electron beam is guided to a shape passing through the base body 21 May be formed. The guide hole 225 may have a circular cross section and three, two and one guide portions 224, 223, and 222 may be formed around the guide hole 225 in order. And a cavity-forming portion 221 may be formed around the one-inducing portion 222.

The cavity forming portion 221 may have a function to couple the two unit cells 20 to each other so that the acceleration resonant cavity 22 is hermetically sealed to the outside. The cavity forming portion 221 may be in the shape of a circular band which is stepped from the front surface 211 toward the inside. A one-guided portion 222 may be formed along the inner circumferential surface of the cavity-forming portion 221. 1 guiding portion 222 has 21 guiding portions extending perpendicularly to the front surface 211 from the inner circumferential surface of the cavity forming portion 221 and 12 guiding portions 22 extending from the guiding portion to the curved surface in the direction of the waveguide hole 225 ≪ / RTI > And a two-guided portion 223 may be formed from the end of the twelve-lead portion.

2 induction portion 223 is composed of a 21 induction portion extending in a planar or similar shape to the end portion of the 1 induction portion 222 and a 22 induction portion extending in a shape protruding in the front direction from the 21 induction portion . 2 guiding portion 223 functions to form the waveguide hole 225 together with the triple guiding portion 224. [ For the formation of the waveguide hole, the three-guided portion 224 may be formed in a curved surface structure directed upwardly or in the direction of the front surface 211, and may be formed, for example, as a conical shape as a whole. Specifically, the triple-guiding portion 224 has a guiding portion 31 having a small radius of curvature as compared with the guiding portion 223 and extending in the direction of the front surface 211 and a guiding portion extending from the guiding portion 31 back to the rear surface 212 in an inclined shape Lt; RTI ID = 0.0 > 32 < / RTI > Circular valleys can be formed at the boundary between the 31-lead portion and the 32-lead portion by the structure of the 31-lead portion and the 32-lead portion. And a cylindrical waveguide hole 225 may be formed from the end of the 32 guiding portion. The waveguide hole 225 may be formed into a shape penetrating from the front surface 211 to the rear surface 212 while being wholly hollow cylinder-shaped. The structure of the acceleration resonant cavity 22 is such that an electron beam propagated in various modes by an electric field or a magnetic field distribution absorbs high frequency RF energy supplied from the outside and accelerates. To this end, the acceleration resonant cavity 22 needs to have an appropriate internal surface condition.

The inner surface of the acceleration resonant cavity 22 has a curved shape that smoothly extends along the circumferential surface with different radii of curvature. One curve shape means forming a boundary portion or a boundary line in a direction perpendicular to the extending direction. One curved shape may include concave or convex portions, such as, for example, an acid or a bone, but does not form a height difference or grain that is divided into different portions. The single curved shape of such an accelerating resonant cavity 22 can be formed by a cutting tool or similar machining from the outside to the center or from the cavity forming portion 221 in the direction of the waveguide hole 225 or vice versa Can be formed by a single step of processing. The material for the tool or the unit cell 20 can be formed while being moved by a distance reaching the cavity forming portion 221 and the waveguide hole 225 by, for example, 5-axis machining or a similar processing method. In such a machining process, the tool is not replaced or the fixed position of the workpiece is not changed for machining a surface having a different radius of curvature. The surface roughness of the curved surface may be, for example, from 0.005 to 5 mu m, preferably from 0.01 to 2 mu m, and most preferably from 0.01 to 0.2 mu m by such a processing step, and the boundary portion having different radius of curvature The surface roughness of the boundary portion can be 0.01 to 0.2 탆. With this structural characteristic, a desired resonance condition can be obtained in the acceleration resonance cavity 22.

The acceleration resonant cavity 22 may include a connection hole 24 formed in the side surface while being semi-spherical as a whole. The connection hole 24 may be formed in the one lead portion 222 and may be formed in an elliptical or similar shape. The connection hole 24 may have the function of making the interior of the acceleration resonant cavity 22 to be in a vacuum state and when the side coupling cavity 23 is formed on the side of the acceleration resonant cavity 22, , 23).

At least one flow hole 25 may be formed in the base body 21 and the flow hole 25 may be formed through the base body 21 and around the acceleration resonant cavity 22 It can be arranged so as to have a rectangular shape. The flow holes 25 may also be formed around the side coupling cavities 23. For example, six flow holes 25 may be formed along the circumference of the base body 21. The flow hole 25 may function to cool the accelerating tube during operation and may be a flow path of the cooling fluid such as water.

At least one fastening holes 26a and 26b may be formed on the front surface 211 and the rear surface 212 of the base body 21 and the fastening holes 26a and 26b may be formed on the front surface 211 and the rear surface 212 212) perpendicular to the thickness direction. For example, the fastening holes 26a and 26b may be formed in a groove shape having a depth of 1/3 to 2/3 of the thickness of the base body 21. [ The fastening pins may be coupled to the fastening holes 26a, 26b to couple the two different unit cells 20 to each other by a method such as brazing or brazing. Also, in the manufacturing process of the unit cell, the fastening holes 26a and 26b can be a reference for forming the acceleration resonant cavity or the side coupling cavity. Concretely, the acceleration resonant cavity formed in the front surface 211 is determined in terms of the positions of the center and circumferential surfaces with respect to the four fastening holes 26a and 26b, and the side coupling process formed in the rear surface 212, The position of the center and circumferential surfaces with respect to the hole can be determined.

The unit cell 20 may include a side coupling cavity 23 having a depth formed opposite to the depth direction in which the acceleration resonant cavity 22 is formed. The side coupling cavity 23 may be activated depending on the mode of the electric field or magnetic field of the electron beam that is induced along the acceleration resonant cavity 22 and may be made in a structure similar to the acceleration resonant cavity 22 as a whole. The side coupling cavities 23 may be located on the sides of the acceleration resonant cavity 22 and may be formed semi-spherically as a whole in directions opposite to each other with respect to the plane of the base body 21. For example, the acceleration resonant cavity 22 may be formed in a semi-spherical shape from the front surface 211 toward the rear surface 212, and the side coupling cavity 23 may extend from the rear surface 212 toward the front surface 211 - may be formed in a spherical shape.

The side coupling cavity 23 may include a coupling hole 235 made in a hollow cylinder structure in the central portion and may have three, two and one coupling induction portions 234, 233 and 232 may be formed. And a cylindrical coupling-coupling-inducing portion 231 may be formed along the circumferential surface of the coupling-inducing portion 232.

The coupling cavity guiding portion 231 may extend in a cylindrical shape in a direction perpendicular to the rear face 212. 1 coupling induction portion 232 can be made into a circular annular ring structure inward from the coupling cavity induction portion 231. 2 coupling induction portion 233 has a coupling inducing portion 21 extending in a plane shape parallel to the rear face 212 from the end portion of the coupling inducing portion 232 and a coupling portion 21 extending upward from the coupling inducing portion in a curved shape And a coupling portion 22 extending from the coupling portion. 2 coupling inducing portion 233 may be formed from the coupling inducing portion 233.

3 coupling-inducing portion 234 may be formed in a dome-like shape as a whole and in a structure in which a cylindrical coupling hole 235 penetrates the central portion. Specifically, the three-coupling-inducing portion 234 includes a coupling-inducing portion 31, which extends in a curved shape as a whole upwardly with two coupling-inducing portions 233, and a coupling-inducing portion 31, which extends in a plane parallel to the rear 212 from the coupling- Lt; RTI ID = 0.0 > 32 < / RTI > And a hollow cylindrical shape passing through the base body 21 can be formed in the central portion of the coupling induction portion. The side coupling cavity 23 can be made in a variety of structures capable of impedance matching with the acceleration resonant cavity 22.

The acceleration resonant cavity 22 or the side coupling cavity 23 needs to be matched with each other as the unit cells 20 are coupled to each other and made into an acceleration tube. To do this, each unit cell needs to be tuned. The unit cell 20 may include at least one tuning hole 27a, 27b, 27e formed on the thickness surface of the base body 21. [ The tuning holes 27a, 27b and 27e may be formed on both sides of the acceleration resonant cavity 22 and may include a first thickness surface 213 forming a long circumferential wall of the base body 21, And the second thickness surface 214 facing the second thickness surface 213, respectively. Also, the tuning holes 27e may be formed on the three-thickness surface 215 and the four-thickness surface forming the short circumferential wall. Each of the tuning holes 27a, 27b and 27e may have a hole shape extending in a direction perpendicular to the plane forming the thickness planes 213, 214 and 215. Each of the tuning holes 27a, 27b and 27e may be formed so as to face each other about the acceleration resonant cavity 22 or the side coupling cavity 23. Each of the tuning holes 27a, 27b and 27e has one, two and three thickness surfaces 213, 214 and 215 so as to correspond to the center portion of the depth and width of the acceleration resonant cavity 22 or the side coupling cavity 23, As shown in FIG. And a depth ranging from 1/4 to 4/5 of the distance from each of the thickness surfaces 213,214 and 215 to the acceleration resonant cavity 22 or side coupling cavity 23, As shown in Fig.

Each of the tuning holes 27a, 27b and 27e can be used for tuning a frequency band in which the electron beam absorbs the unit cell 20. For example, an injection pressure can be applied to the tuning holes 27a, 27b, 27e for tuning in a short frequency band, and a suction pressure can be applied from the tuning holes 27a, 27b, 27e for tuning in a long frequency band . Tuning for each tuning hole 27a, 27b, 27e can be accomplished in various ways.

A plurality of unit cells 20 may be coupled to each other to form an acceleration tube. For example, the unit cell 20 may be configured such that energy having a frequency of 1 to 50 GHz is absorbed or resonated with respect to an electromagnetic wave of the frequency band. And X-band or S-band electromagnetic waves can be generated. And it is necessary to have a suitable standard.

The processing tool or the manufacturing method according to the present invention can be applied to the processing of a unit cell for an accelerator having various structures and is not limited to the embodiment shown.

The processing tool according to the invention allows the resonant cavity or coupling cavity of the accelerator cell to be made into a defined geometrical shape. Thereby allowing the accelerator cell processed by the processing tool to absorb energy according to the resonance in a predetermined frequency band. The processing tool according to the present invention is applied to accelerator cells of various sizes so that the surface roughness or radius of curvature of the resonant cavity can be made to conform to the particle acceleration conditions of the accelerator. The method of manufacturing a unit cell according to the present invention allows the side surface of a material to be fixed to form a surface, thereby maintaining the physical properties of the material during processing. Further, the unit cell according to the present invention can be applied to accelerators of various structures or acceleration tubes for generating various bands of X-rays.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

11: Wear unit 12: Insert unit
13: machining tip 13a: machining tip
20: unit cell 21: base body
22: acceleration resonance cavity 23: side coupling cavity
24: connection hole 25: flow hole
26: fastening holes 26a, 26b: fastening holes
27a, 27b, 27e: tuning hole 31: tip portion
32: tip body 33: oblique side
34: Fixing hole 35: Fixing means
40: mounting tool 41: stationary cylinder
43a, 43b, 43c, 43d: fixing pins 44a, 44b:
112: fixing surface 113: connection portion
114: inlet hole 121: depth forming portion
122: tip fixing portion 131: protruding portion
211: Front 212: Rear
213, 214, 215: 1, 2, 3 thickness face 221:
222, 223, 224: 1, 2, 3 guide portions
225: waveguide hole 231: coupling cavity guiding portion
232, 233, 234: 1, 2, 3 coupling induction portion
235: Coupling hole 411: Circular surface
AC: Acceleration resonant cavity BL1, BL2: Reference line
C1, C2: side extension inclination angle CS: coupling surface
FS: Front LA: Incline angle
M: Cell material RC: Acceleration resonant cavity
RS: rear SA: circumference angle
SC: Side coupling joint SL: Contact length

Claims (2)

A linearly extending wear unit (11);
An insert unit (12) formed at one end of the wear unit (11); And
And a machining tip (13) fixed to an end of the insert unit (12) and having at least the same width as the insert unit (12) and formed with a protruding part (131)
The insert unit 12 has a flow path formed therein and a stepped coupling surface CS formed at an end thereof,
Wherein the machining tip (13) is a diamond or cemented carbide and is fixed to the coupling surface (CS), and both sides forming the thickness have a shape tilted inward with a downward direction. The tool according to claim 1, wherein the projecting portion (131) has a plate shape and a front portion which is in contact with the accelerator cell material has a curved shape or a linear shape.

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