Method and device for centering traveling wave tube electron gun assembly and high frequency assembly

Abstract

The invention discloses a method and device for centering a traveling wave tube electron gun assembly and a high frequency assembly. The centering method comprises: placing the high frequency assembly and the electron gun assembly in a V-shaped frame on a multi-axis electric control motion platform and locking them; moving the electric control motion platform under the high frequency assembly so that the high frequency assembly is close to the electron gun assembly, a standard ball moves with the electric control motion platform, three-coordinates are used to measure the standard ball, the electric control motion platform under the high frequency assembly is moved so that the high frequency assembly is away from the electron gun assembly, three-coordinates are used to measure the standard ball, and a line connecting the positions of the two standard balls is defined as an axial reference axis of the motion platform; adjusting the high frequency assembly and the electron gun assembly to be parallel to the axial reference axis; measuring the coordinates of the electron injection port of the high frequency assembly and the anode hole of the electron gun assembly, and calculating the scissor difference between the electron injection port and the anode hole; measuring and calculating the distance difference between the high frequency assembly and the electron gun assembly; moving the high frequency assembly to compensate for the scissor difference and the distance difference; and fixing the high frequency assembly and the electron gun assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of electric vacuum device preparation, and in particular to a method and device for centering a traveling wave tube electron gun component and a high-frequency component. Background Art

[0002] The function of the traveling wave tube electron gun is to emit an electron beam with a certain direction, speed and laminar flow characteristics. The function of the traveling wave tube high-frequency component is to realize the beam-wave interaction with high efficiency. This requires that the motion trajectory of the electron beam has good coaxiality with the high-frequency component, generally 0.01 to 0.02 mm. Otherwise, the electrons will hit the high-frequency component, causing problems such as clutter interference, spiral flow rise, increased heat consumption, and reduced efficiency.

[0003] After assembly, the core features of the two components (usually the anode hole of the electron gun and the inner hole of the spiral of the high-frequency component) are sealed inside and cannot be detected by traditional optical or contact coordinate measuring machines; the internal structure of the docking position is complex, and industrial CT is difficult to distinguish coaxial deviations below 0.02mm. Therefore, the quality of the assembly effect can generally only be completed through post-process testing, such as the electron injection pass rate index or measuring the temperature distribution near the end cap, and indirectly inferring the proportion of electrons hitting the inner wall of the high-frequency component.

[0004] The three major components of the space traveling wave tube (electron gun, high-frequency component, collector) are the core parts of the operation of the electron injection channel, especially the alignment and assembly of the electron gun and the high-frequency component, which is the most critical. The traditional method mostly adopts the transition fit of the shaft hole, which requires a sufficiently small fit gap and a sufficiently long guide length (or adding a flange with good verticality and a sufficiently large fit area). However, when the coaxiality requirements of the electron gun and the high-frequency component are stricter than 0.02mm, the difficulty of implementing this method is greatly increased. First of all, the electron injection channel hole of the high-frequency component cannot be directly inserted into the anode hole. In terms of electrical design, the insulation requirements of the two are several thousand or even tens of thousands of volts, and a certain distance must be maintained to meet the range requirements of the electron gun; in terms of structural design, the guide length of the anode part is short, which is difficult to use as a mechanical fit benchmark. Therefore, generally, efforts are made on the end cover matching ring of the electron gun and the end cover of the high-frequency component, that is, the shaft hole matching relationship between the two is required to meet the above requirements. In addition, during the assembly process, the anode hole and the gun end cap mating ring are also required to have good coaxiality, generally better than 0.015mm. Similarly, the inner hole of the electron injection channel and the end cap of the high-frequency component are also the same, which brings great challenges to the assembly and manufacturing of the component itself. Moreover, during the component manufacturing process, after multiple furnace brazing, the roundness of the parts after heating is difficult to be better than 0.005mm. The matching clearance must be designed to be greater than 0.015mm to successfully complete the insertion of the end cap mating ring and the end cap. This clearance also brings uncertainty to the final assembly effect that is very likely to cause out-of-tolerance. Summary of the invention

[0005] In view of this, the present disclosure provides a method to at least partially solve at least one of the above technical problems.

[0006] According to an inventive concept of one aspect of an embodiment of the present disclosure, a method for centering a traveling wave tube electron gun assembly and a high frequency assembly is provided, comprising:

[0007] S1: Place the high-frequency component and the electron gun component in the V-shaped frame on the multi-axis electronically controlled motion platform and lock them;

[0008] S2: Move the electrically controlled motion platform under the high-frequency component to bring the high-frequency component close to the electron gun component, wherein the standard ball moves with the electrically controlled motion platform; measure the standard ball using three-coordinate measurement; move the electrically controlled motion platform under the high-frequency component again to make the high-frequency component away from the electron gun component, measure the standard ball using three-coordinate measurement again, and define the line connecting the two standard ball positions as the axial reference axis of the motion platform;

[0009] S3: respectively adjusting the high frequency component and the electron gun component to be parallel to the axial reference axis;

[0010] S4: measuring the coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun component, and calculating the scissors difference between the electron injection port and the anode hole; measuring the end faces of the high-frequency component and the electron gun component to obtain the distance difference between the high-frequency component and the electron gun component;

[0011] S5: moving the high-frequency component to compensate for the scissors difference and the distance difference; and

[0012] S6: Fix the high-frequency component and the electron gun component.

[0013] According to some embodiments of the present disclosure, the operation S5 further includes:

[0014] S7: lifting the high-frequency component, at which time the electron gun is lifted together with the high-frequency component, and after being separated from the V-shaped frame fixing the electron gun, the high-frequency component is rotated 180°, and the collector is mounted on the V-shaped frame on the electric control motion platform of the three-coordinate measurement platform and locked; and

[0015] S8: Repeat operations S1 to S6 to fix the collector to the other end of the high-frequency component opposite to the electron gun component.

[0016] According to some embodiments of the present disclosure, S3 includes sub-steps:

[0017] S311: Establishing a spatial coordinate system with the center of the end face of the high-frequency component as the coordinate origin, the axial reference axis as the Y axis, the horizontal plane perpendicular to the Y axis as the X axis, and the vertical direction as the Z axis;

[0018] S312: Select four measuring points on the end surface of the high-frequency component, and the angles between the lines connecting the four measuring points and the coordinate origin and the axial reference axis are α Hu , α Hd , α Hl , α Hr , adjusting the electric angle table and the electric rotation table under the high-frequency component until the end surface of the high-frequency component is perpendicular to the axial reference axis;

[0019] Using the same method, the end surface of the electron gun assembly is made perpendicular to the axial reference axis;

[0020] The angle of moving the electric angle stage is The angle of moving the electric rotating table is

[0021] According to some alternative embodiments of the present disclosure, S3 includes sub-steps:

[0022] S321: Establishing a spatial coordinate system with the center of the end surface of the high-frequency component as the coordinate origin, the axial reference axis as the Y axis, the horizontal plane perpendicular to the Y axis as the X axis, and the vertical direction as the Z axis;

[0023] S322: measuring the positions of the electron injection port and the electron outlet of the high-frequency component, taking the line connecting the electron injection port and the electron outlet as the axis of the high-frequency component, calculating the first angle between the axis of the high-frequency component and the axial reference axis, and adjusting the electric angular position table and the electric rotating table under the high-frequency component until the first angle is zero;

[0024] The same method is adopted to make the angle between the axis of the electron gun assembly and the axial reference axis zero.

[0025] According to some embodiments of the present disclosure, S4 includes:

[0026] The coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun component are measured as H h1 (x 11 , z 11 ) and G h1 (x 21 , z 21 );

[0027] The calculating the scissors difference between the electron injection port and the anode hole comprises:

[0028] Δ x =x 11 -x 21 ;

[0029] Δ z=z 11 -z 21 ;

[0030] Among them, Δ x represents the scissors difference between the electron injection port and the anode hole of the electron gun assembly along the x direction, Δ z Represents the scissors difference between the electron injection port and the anode hole of the electron gun assembly along the z direction of the electron injection port and the anode hole of the electron gun assembly.

[0031] According to some embodiments of the present disclosure, in S4, the four measuring points are respectively located in the four directions of the center of the end face of the high-frequency component, the four measuring points are equidistant from the axial reference axis, and the four measuring points are respectively Hu(x 1 ,y 1 , z 1 )、Hd(x 1 ,y 1 , z 1 )、Hl(x 1 ,y 1 , z 1 )、Hr(x 1 ,y 1 , z 1 );

[0032] The step of measuring the end faces of the high-frequency component and the electron gun component to obtain a distance difference between the high-frequency component and the electron gun component comprises:

[0033] Calculate the average y coordinates of the four measurement points on the end face of the high-frequency component

[0034] The same method is used to calculate the average y coordinates of the four measurement points on the end surface of the electron gun assembly.

[0035] The distance difference is calculated according to the average value of the y coordinates on the end surface of the high-frequency component and the end surface of the electron gun component, including:

[0036]

[0037] Among them, Δ y Indicates the distance difference.

[0038] According to some embodiments of the present disclosure, moving the high-frequency component to compensate for the scissors difference includes:

[0039] The two electrically controlled motion platforms of the XH and ZH axes below the mobile fixed high frequency component device are used to compensate for the scissors difference.

[0040] According to some embodiments of the present disclosure, moving the high-frequency component to compensate for the distance difference includes:

[0041] Move the Y below the high frequency component device H The electronically controlled motion platform of the axis is used to compensate for the distance difference.

[0042] According to some embodiments of the present disclosure, the high-frequency component and the electron gun component are fixed by welding.

[0043] According to some embodiments of the present disclosure, after S5, the step further includes:

[0044] The scissors difference is re-measured, and operations S4 to S5 are repeated until the scissors difference meets a preset condition.

[0045] According to another aspect of the present disclosure, there is provided a centering device for a traveling wave tube electron gun assembly and a high frequency assembly, for implementing the aforementioned centering method, the centering device comprising:

[0046] Three-coordinate measuring platform;

[0047] An 8-axis electronically controlled motion platform is arranged on the three-coordinate measuring platform;

[0048] Welding machines; and

[0049] The component clamping mold is arranged on the 8-axis electric control motion platform, and the component clamping mold includes a V-shaped frame and a clamp, and the V-shaped frame includes:

[0050] A clamping portion, used to clamp the component to be aligned with the clamp, the longitudinal section of the clamping portion is V-shaped, and the length of the upper half of the clamping portion in the axial direction is greater than the length of the lower half of the clamping portion in the axial direction; and

[0051] A fixing seat is arranged below the clamping portion, and the fixing seat is used to fix the clamping portion on an adjacent structure.

[0052] The method for centering the traveling wave tube electron gun assembly and the high frequency assembly of the above embodiment has the following effects:

[0053] (1) With the characteristic position that needs to be aligned as the core, other auxiliary positions and structures are no longer needed to ensure coaxiality, which can greatly improve assembly accuracy and efficiency and reduce unnecessary alignment operations;

[0054] (2) The centering and adjustment work can be carried out in a fully automated manner, which improves assembly efficiency and reduces operation difficulty;

[0055] (3) Three-coordinate measuring machine, honeycomb vibration isolation plate, 8-axis electronically controlled motion platform, precision welding machine, large component clamping mold, etc., with complete social supporting facilities and stable technology, which is conducive to development and promotion;

[0056] (4) It is relatively easy to develop software codes for automatic measurement of geometric quantities and algorithms for motion execution, and the operation difficulty is low;

[0057] (5) The following method is used to establish communication between the two: a. Three-coordinate waiting, b. Real-time export and analysis of process data, c. Motion execution, d. Repeat a, b, c twice, which can greatly reduce the difficulty of automation software development. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A flow chart schematically illustrates a method for centering a traveling wave tube electron gun assembly and a high frequency assembly according to an embodiment of the present disclosure; and

[0059] Figure 2 A flowchart of a method for centering a traveling wave tube electron gun assembly and a high frequency assembly according to an embodiment of the present disclosure is schematically shown;

[0060] Figure 3 The exploded schematic diagram schematically shows an 8-axis electrically controlled motion platform of the centering device of the traveling wave tube electron gun assembly and the high frequency assembly according to the embodiment of the present disclosure; and

[0061] Figure 4 The three-dimensional view and the side view of the V-shaped frame of the centering device of the traveling wave tube electron gun assembly and the high-frequency assembly according to the embodiment of the present disclosure are schematically shown.

[0062] In the above drawings, the meanings of the reference numerals are as follows:

[0063] 1 represents the clamping part; 101 represents the upper half; 102 represents the lower half;

[0064] 2 indicates a fixed seat. DETAILED DESCRIPTION

[0065] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0066] However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present disclosure. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present disclosure. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, the description of the known technology is omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0067] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. The term "comprising" used herein indicates the existence of features, steps, operations, but does not exclude the existence or addition of one or more other features.

[0068] In the case of using expressions such as "at least one of A, B, and C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.). In the case of using expressions such as "at least one of A, B, or C, etc.", it should generally be interpreted in accordance with the meaning of the expression generally understood by those skilled in the art (for example, "a system having at least one of A, B, or C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0069] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0070] Figure 1 The flowchart of the method for centering a traveling wave tube electron gun assembly and a high frequency assembly according to an embodiment of the present disclosure is schematically shown.

[0071] In order to solve the above technical problems, according to the inventive concept of one aspect of the embodiment of the present disclosure, a method for centering a traveling wave tube electron gun assembly and a high frequency assembly is provided, such as Figure 1 As shown, it includes operations S1 to S6.

[0072] According to some embodiments of the present disclosure, operation S1 includes: placing the high-frequency component and the electron gun component in a V-shaped frame on a multi-axis electronically controlled motion platform and locking them.

[0073] In this embodiment, optionally, the electron beam flow direction of the electron gun assembly is a first axis, and the first axis is consistent with the direction of the X axis, the Y axis, or the Z axis of the three-coordinate measurement platform.

[0074] According to some embodiments of the present disclosure, operation S2 includes: moving the electrically-controlled motion platform under the high-frequency component to bring the high-frequency component close to the electron gun assembly, wherein the standard ball moves with the electrically-controlled motion platform; measuring the standard ball using three-coordinates; moving the electrically-controlled motion platform under the high-frequency component again to move the high-frequency component away from the electron gun assembly, measuring the standard ball using three-coordinates again, and defining the line connecting the two standard ball positions as the axial reference axis of the motion platform.

[0075] According to some embodiments of the present disclosure, operation S3 includes: adjusting the high-frequency assembly and the electron gun assembly to be parallel to the axial reference axis respectively.

[0076] According to some embodiments of the present disclosure, operation S4 includes: measuring the coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun assembly, and calculating the scissors difference between the electron injection port and the anode hole; measuring the end faces of the high-frequency component and the electron gun assembly to obtain the distance difference between the high-frequency component and the electron gun assembly.

[0077] According to some embodiments of the present disclosure, operation S5 includes: moving the high-frequency component to compensate for the scissor difference and the distance difference.

[0078] According to some embodiments of the present disclosure, operation S6 includes: fixing the high frequency component and the electron gun component.

[0079] According to some embodiments of the present disclosure, operation S6 further includes operation S7 and operation S8.

[0080] According to some embodiments of the present disclosure, operation S7 includes: lifting the high-frequency component, at which time the electron gun is lifted together with the high-frequency component, and after detaching from the V-shaped frame that fixes the electron gun, the high-frequency component is rotated 180°, and the collector is installed on the V-shaped frame on the electrically controlled motion platform of the three-coordinate measurement platform and locked.

[0081] According to some embodiments of the present disclosure, operation S8 includes: repeating operations S1 to S6 to fix the collector to the other end of the high-frequency component opposite to the electron gun component.

[0082] According to some embodiments of the present disclosure, the multi-axis electronically controlled motion platform includes one of a servo motion platform, a stepping motion platform, and a cylinder motion platform with adjustable stroke.

[0083] According to some optional embodiments of the present disclosure, in operations S4 to S5, the order of compensating the scissors difference and the distance difference can be adjusted. Specifically, the coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun component are first measured, and the scissors difference between the electron injection port and the anode hole is calculated. After the scissors difference is calculated, the high-frequency component is directly moved to compensate for the scissors difference. After compensating for the scissors difference, the end faces of the high-frequency component and the electron gun component are measured to obtain the distance difference between the high-frequency component and the electron gun component, and then the high-frequency component is moved to compensate for the distance difference.

[0084] According to some embodiments of the present disclosure, operation S3 includes sub-step S311 and sub-step S312.

[0085] S311: Establish a spatial coordinate system with the center of the end face of the high-frequency component as the coordinate origin, the axial reference axis as the Y axis, the direction perpendicular to the Y axis on the horizontal plane as the X axis, and the vertical direction as the Z axis;

[0086] S312: Select four measuring points on the end face of the high-frequency component. The angles between the lines connecting the four measuring points and the origin of the coordinate system and the axial reference axis are α Hu , α Hd , α Hl , α Hr , adjust the electric angle table and electric rotation table under the high-frequency component until the end face of the high-frequency component is perpendicular to the axial reference axis;

[0087] The same method is used to make the end surface of the electron gun assembly perpendicular to the axial reference axis;

[0088] Among them, the angle of the mobile electric angle stage is Move the electric rotary table to an angle of

[0089] According to some alternative embodiments of the present disclosure, operation S3 includes sub-step S321 and sub-step S322.

[0090] S321: Establish a spatial coordinate system with the center of the end face of the high-frequency component as the coordinate origin, the axial reference axis as the Y axis, the direction perpendicular to the Y axis on the horizontal plane as the X axis, and the vertical direction as the Z axis;

[0091] S322: measuring the positions of the electron injection port and the electron outlet of the high-frequency component, taking the line connecting the electron injection port and the electron outlet as the axis of the high-frequency component, calculating the first angle between the axis of the high-frequency component and the axial reference axis, and adjusting the electric angular position table and the electric rotating table under the high-frequency component until the first angle is zero;

[0092] The same method is used to make the angle between the axis of the electron gun assembly and the axial reference axis zero.

[0093] According to some embodiments of the present disclosure, S4 includes: measuring the coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun component, H and h1 (x 11 , z 11 ) and G h1 (x 21 , z 21 ). Calculate the scissor difference between the electron injection port and the anode hole, including:

[0094] Δ x =x 11 -x21 ;

[0095] Δ z =z 11 -z 21 ;

[0096] Among them, Δ x represents the scissors difference between the electron injection port and the anode hole of the electron gun assembly along the x direction, Δ z Represents the scissors difference between the electron injection port and the anode hole of the electron gun assembly along the z direction of the electron injection port and the anode hole of the electron gun assembly.

[0097] According to some embodiments of the present disclosure, in S4, the four measuring points are respectively located in the four directions of the center of the end face of the high-frequency component, the four measuring points are equidistant from the axial reference axis, and the four measuring points are respectively Hu(x 1 ,y 1 , z 1 )、Hd(x 1 ,y 1 , z 1 )、Hl(x 1 ,y 1 , z 1 )、Hr(x 1 ,y 1 , z 1 );

[0098] The distance difference between the high-frequency component and the electron gun component obtained by measuring the end faces of the high-frequency component and the electron gun component includes:

[0099] Calculate the average y coordinate of four measurement points on the end face of the high-frequency component

[0100] The same method is used to calculate the average y coordinates of the four measurement points on the end surface of the electron gun assembly.

[0101] The distance difference is calculated based on the average y coordinates of the end face of the high-frequency component and the end face of the electron gun component, including:

[0102]

[0103] Among them, Δ y Indicates the distance difference.

[0104] According to some embodiments of the present disclosure, moving the high-frequency component to compensate for the scissors difference includes:

[0105] The two electrically controlled motion platforms of the XH and ZH axes under the mobile and fixed high-frequency component device are used to compensate for the scissors difference.

[0106] According to some embodiments of the present disclosure, moving the high-frequency component to compensate for the distance difference includes:

[0107] Move the Y below the high frequency component device H The electronically controlled motion platform of the axis can compensate for the distance difference.

[0108] According to some embodiments of the present disclosure, the high-frequency component and the electron gun component are fixed by welding.

[0109] According to some embodiments of the present disclosure, after S5, the process further includes: re-measuring the scissors difference, and repeating operations S4 to S5 until the scissors difference meets a preset condition.

[0110] According to the inventive concept of another aspect of the embodiment of the present disclosure, there is provided a centering device for a traveling wave tube electron gun assembly and a high-frequency assembly, for implementing the aforementioned centering method, the centering device comprising: a three-coordinate measuring platform, an 8-axis electrically controlled motion platform, a welding machine; and a component clamping mold, wherein the 8-axis electrically controlled motion platform is arranged on the three-coordinate measuring platform, and the component clamping mold is arranged on the 8-axis electrically controlled motion platform.

[0111] Figure 2 The flowchart of the method for centering a traveling wave tube electron gun assembly and a high frequency assembly according to an embodiment of the present disclosure is schematically shown.

[0112] The technical solution of the present disclosure is further described below in conjunction with specific embodiments. It should be understood that the specific embodiments are only intended to facilitate those skilled in the art to better understand the solution and should not be used to limit the scope of protection of the present disclosure.

[0113] Embodiment 1

[0114] According to some embodiments of the present disclosure, Figure 2 As shown, the method for aligning the traveling wave tube electron gun assembly and the high frequency assembly includes the following steps:

[0115] 1) Assemble the high-frequency components and the electron gun components. Optionally, move the high-frequency components and the electron gun components to the three-coordinate method (to be verified) measurement platform through the slide rail and the roller drive panel vibration isolation plate, and define the flow direction of the traveling wave tube electron beam as the Y axis, which is consistent with the Y axis of the coordinate system of the three-coordinate method (to be verified) measurement platform;

[0116] 2) Clamp the high-frequency component and the electron gun component at an angle approximately parallel to the Y axis (with a deviation less than a preset angle) using V-grooves, brackets, screws, etc.;

[0117] 3) Move the electronically controlled motion platform to bring the high-frequency component close to the electron gun component, measure the standard ball using the three-coordinate method (to be verified), and record the data;

[0118] 4) Move the electronically controlled motion platform again (the platform that fixes the electron gun assembly remains stationary) to move the high-frequency assembly away from the electron gun, and measure the standard ball again using the three-coordinate method (to be verified) and record the data;

[0119] 5) Connect the two standard ball positions (center to center) and define it as the Y1 axis of the electronically controlled motion platform; use the three-coordinate method (to be verified) to measure the end face circular contour of the high-frequency component, translate the Y1 axis to the center of the circular contour, translate the standard ball position measured in step 4) to the Y1 axis, and define the above position as the coordinate origin O(x 0 ,y 0 , z 0 );

[0120] 6) Use the three-coordinate method (to be verified) to measure the coordinate origin O(x) on the end face of the high-frequency component. 0 ,y 0 , z 0 ) The coordinates of the measurement points at the top, bottom, left, and right positions Hu(x 1 ,y 1 , z 1 ), Hd(x 1 ,y 1 , z 1 ), Hl(x 1 ,y 1 , z 1 ), Hr(x 1 ,y 1 , z 1 ), the four positions are equidistant from the Y1 axis, and the four measuring points at the top, bottom, left, and right are connected to the origin of the coordinate system to obtain four line segments, and the angles α between the four line segments and the Y1 axis are obtained. Hu , α Hd , α Hl , α Hr , move the electric angle stage and the electric rotating stage to make the end face of the high-frequency component perpendicular to the Y1 axis. The angle of the electric angle stage is Move the electric rotary table to an angle of If the target value is not reached after one adjustment, repeat the above operation, drive the electric platform again to compensate and detect the coordinates of the four new measurement points until the requirements are met; calculate the average y coordinates of the four measurement points after the requirements are met Optionally, if the three-coordinate travel is sufficient, the input port and output port of the electron injection channel on the high-frequency component can be measured successively, the parallelism between the line connecting the centers of the two circles and the Y1 axis can be evaluated, and adjusted to the appropriate position;

[0121] 7) Use the same method as above to adjust the end face of the electron gun assembly to obtain the coordinates of the four measurement points Gu (x 1 ,y1 , z 1 ), Gd(x 1 ,y 1 , z 1 ), Gl(x 1 ,y 1 , z 1 ), Gr(x 1 ,y 1 , z 1 ), calculate the average y coordinate of the final four measurement points on the end face of the electron gun assembly

[0122] 8) Use the three-coordinate method (to be verified) to measure the coordinates H of the electron injection port of the high-frequency component and the anode hole of the electron gun component h1 (x 11 , z 11 ), G h1 (x 21 , z 21 ), calculate the scissors difference Δ between the anode hole and the high-frequency component x =x 11 -x 21 , Δ z =z 11 -z 21 ; Move the X below the high frequency component device H and Z H Axis 2 electronically controlled motion platforms, compensating for scissor difference Δ x and Δ z And retest; move the Y below the fixed high frequency component device H axis, bringing the high frequency components closer to the electron gun to compensate for the distance difference Ensure that the electrical boundary parts meet the design requirements (after the two components are close, there is no spatial re-measurement of the three-coordinate probe, so the Y-axis position motion accuracy is required to be higher), such as better than 5μm. The other linear motion axes only require repeatable motion accuracy. The angular displacement stage is based on the common specifications of the traveling wave tube. After trigonometric function calculation, the angle repeatable motion accuracy can be obtained, which generally needs to be better than 0.005°.

[0123] 9) Use methods with less welding deformation, such as pulsed argon arc welding, laser welding, etc. to complete the welding of high-frequency components and electron gun components;

[0124] 10) Loosen the fixture that fixes the electron gun assembly (the high-frequency assembly can be lifted appropriately), rotate the high-frequency assembly 180°, clamp the collector on the V-groove that originally fixed the electron gun, repeat the above steps (replace the electron gun assembly with the collector), and complete the alignment and welding of the high-frequency assembly and the collector;

[0125] 14) Loosen the clamps that fix the high-frequency components and the collector components, and remove the entire downlink wave tube.

[0126] Optionally, a re-measurement operation can be added: find a characteristic position outside the tube, measure the relative position of the position and the internal electron injection channel, and after the whole tube is docked, re-measure the characteristic position to indirectly calculate the centering effect of the electron injection channel.

[0127] Optionally, the axis of the electron gun assembly can be rotated to align the axis of the electron gun assembly with the high-frequency assembly at a certain angle, and then the above-mentioned centering operation can be performed. This is particularly suitable for assembly and adjustment of strip columns and multi-beam traveling wave tubes.

[0128] Figure 3 The exploded schematic diagram of the 8-axis electrically controlled motion platform of the centering device of the traveling wave tube electron gun assembly and the high-frequency assembly in the embodiment of the present disclosure is schematically shown.

[0129] In this embodiment:

[0130] 1 represents the Y1 axis, which is used to define the axial reference axis; to make room for the three-coordinate probe group; and to adjust the distance between the two components;

[0131] 2 represents X H Axis, used to adjust the deviation of the high-frequency component in the X direction;

[0132] 3 for Z H Axis, used to adjust the deviation of the high-frequency component in the Z direction;

[0133] 4 for C H Axis, used to adjust the high-frequency component to rotate around the Z axis so that it is parallel to the Y1 axis;

[0134] 5 means A H Axis, used to adjust the high-frequency component to rotate around the X-axis so that it is parallel to the Y1 axis;

[0135] 6 for C G Axis, used to adjust the electron gun to rotate around the Z axis so that it is parallel to the Y1 axis;

[0136] 7 represents A G Axis, used to adjust the electron gun to rotate around the X axis so that it is parallel to the Y1 axis; and

[0137] 8 for B G Axis, used to adjust the electron gun around the Y axis to align it with the phase of the high-frequency component.

[0138] Figure 4 The three-dimensional view and the side view of the V-shaped frame of the centering device of the traveling wave tube electron gun assembly and the high-frequency assembly according to the embodiment of the present disclosure are schematically shown.

[0139] According to some embodiments of the present disclosure, Figure 4 As shown, the V-shaped frame includes a clamping portion 1 and a fixing seat 2.

[0140] In this embodiment, the clamping portion 1 is used to clamp the component to be aligned with the clamp, the longitudinal section of the clamping portion 1 is V-shaped, and the length of the upper half 101 of the clamping portion 1 along the axial direction is greater than the length of the lower half 102 of the clamping portion 1 along the axial direction; and

[0141] The fixing seat 2 is arranged below the clamping part 1 and is used to fix the clamping part 1 on an adjacent structure.

[0142] In this embodiment, the V-shaped frame is characterized by a hollow bottom, so that the welding machine for fixing the components can be inserted into the docking position from different positions for welding. Finally, there are evenly distributed welding points in the entire circumferential direction, which can pre-fix the components more reliably and improve the quality of welding.

[0143] The method for centering the traveling wave tube electron gun assembly and the high frequency assembly of the above embodiment has the following effects:

[0144] (1) With the characteristic position that needs to be aligned as the core, other auxiliary positions and structures are no longer needed to ensure coaxiality, which can greatly improve assembly accuracy and efficiency and reduce unnecessary alignment operations;

[0145] (2) The centering and adjustment work can be carried out in a fully automated manner, which improves assembly efficiency and reduces operation difficulty;

[0146] (3) Three-coordinate measuring machine (to be verified), honeycomb vibration isolation plate, 8-axis electronically controlled motion platform, precision welding machine, large component clamping mold, etc., with complete social supporting facilities and stable technology, which is conducive to development and promotion;

[0147] (4) It is relatively easy to develop software codes for automatic measurement of geometric quantities and algorithms for motion execution, and the operation difficulty is low;

[0148] (5) The following method is used to establish communication between the two: a. Three-coordinate waiting, b. Real-time export and analysis of process data, c. Motion execution, d. Repeat abc twice, which can greatly reduce the difficulty of automation software development.

[0149] So far, the embodiments of the present disclosure have been described in detail in conjunction with the accompanying drawings. It should be noted that the implementation methods not shown or described in the drawings or the body of the specification are all forms known to ordinary technicians in the relevant technical field and are not described in detail. In addition, the above definitions of each component are not limited to the various specific structures, shapes or methods mentioned in the embodiments, and ordinary technicians in the field can simply change or replace them.

[0150] It should also be noted that, in the specific embodiments of the present disclosure, unless otherwise indicated, the numerical parameters in the present specification and the appended claims are approximate values ​​and can be changed according to the desired characteristics obtained through the content of the present disclosure. Specifically, all numbers used in the specification and claims to express the size, range conditions, etc. of the composition should be understood to be modified by the term "about" in all cases. In general, the meaning of the expression refers to the change of ±10% in some embodiments, ±5% in some embodiments, ±1% in some embodiments, and ±0.5% in some embodiments by a specific number.

[0151] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways, even if such combinations and / or combinations are not explicitly described in the present disclosure. In particular, the features described in the various embodiments and / or claims of the present disclosure may be combined and / or combined in a variety of ways without departing from the spirit and teachings of the present disclosure. All of these combinations and / or combinations fall within the scope of the present disclosure.

[0152] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present disclosure. It should be understood that the above description is only a specific embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A method for centering a traveling wave tube electron gun assembly and a high frequency assembly, comprising: S1: Place the high-frequency component and the electron gun component in the V-shaped frame on the multi-axis electronically controlled motion platform and lock them; S2: Move the electrically controlled motion platform under the high-frequency component to bring the high-frequency component close to the electron gun component, wherein the standard ball moves with the electrically controlled motion platform; measure the standard ball using three-coordinate measurement; move the electrically controlled motion platform under the high-frequency component again to make the high-frequency component away from the electron gun component, measure the standard ball using three-coordinate measurement again, and define the line connecting the two standard ball positions as the axial reference axis of the motion platform; S3: respectively adjusting the high frequency component and the electron gun component to be parallel to the axial reference axis; S4: measuring the coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun component, and calculating the scissors difference between the electron injection port and the anode hole; measuring the end faces of the high-frequency component and the electron gun component to obtain the distance difference between the high-frequency component and the electron gun component; S5: moving the high-frequency component to compensate for the scissors difference and the distance difference; and S6: Fix the high-frequency component and the electron gun component.

2. The centering method according to claim 1, wherein: Operation S5 further includes: S7: lifting the high-frequency component, at which time the electron gun is lifted together with the high-frequency component, and after being separated from the V-shaped frame fixing the electron gun, the high-frequency component is rotated 180°, and the collector is mounted on the V-shaped frame on the electric control motion platform of the three-coordinate measurement platform and locked; and S8: Repeat operations S1 to S6 to fix the collector to the other end of the high-frequency component opposite to the electron gun component.

3. The centering method according to claim 1 or 2, wherein: The S3 comprises sub-steps: S311: Establishing a spatial coordinate system with the center of the end face of the high-frequency component as the coordinate origin, the axial reference axis as the Y axis, the horizontal plane perpendicular to the Y axis as the X axis, and the vertical direction as the Z axis; S312: Select four measuring points on the end surface of the high-frequency component, and the angles between the lines connecting the four measuring points and the coordinate origin and the axial reference axis are α Hu , α Hd , α Hl , α Hr , adjusting the electric angle table and the electric rotation table under the high-frequency component until the end surface of the high-frequency component is perpendicular to the axial reference axis; Using the same method, the end surface of the electron gun assembly is made perpendicular to the axial reference axis; The angle of moving the electric angle stage is The angle of moving the electric rotating table is 4. The centering method according to claim 1 or 2, wherein: The S3 comprises sub-steps: S321: Establishing a spatial coordinate system with the center of the end surface of the high-frequency component as the coordinate origin, the axial reference axis as the Y axis, the horizontal plane perpendicular to the Y axis as the X axis, and the vertical direction as the Z axis; S322: measuring the positions of the electron injection port and the electron outlet of the high-frequency component, taking the line connecting the electron injection port and the electron outlet as the axis of the high-frequency component, calculating the first angle between the axis of the high-frequency component and the axial reference axis, and adjusting the electric angular position table and the electric rotating table under the high-frequency component until the first angle is zero; The same method is adopted to make the angle between the axis of the electron gun assembly and the axial reference axis zero.

5. The centering method according to claim 3, wherein: The S4 includes: The coordinates of the electron injection port of the high-frequency component and the anode hole of the electron gun component are measured as H h1 (x 11 , z 11 ) and G h1 (x 21 , z 21 ); The calculating the scissors difference between the electron injection port and the anode hole comprises: Δ x =x 11 -x 21 ; Δ z =from 11 -With 21 ; Among them, Δ x represents the scissors difference between the electron injection port and the anode hole of the electron gun assembly along the x direction, Δ z Represents the scissors difference between the electron injection port and the anode hole of the electron gun assembly along the z direction of the electron injection port and the anode hole of the electron gun assembly.

6. The centering method according to claim 3, wherein: In S4, the four measuring points are respectively located in four directions of the center of the end face of the high-frequency component, the four measuring points are equidistant from the axial reference axis, and the four measuring points are Hu (x1, y1, z1), Hd (x1, y1, z1), Hl (x1, y1, z1), and Hr (x1, y1, z1); The step of measuring the end faces of the high-frequency component and the electron gun component to obtain a distance difference between the high-frequency component and the electron gun component comprises: Calculate the average y coordinates of the four measurement points on the end face of the high-frequency component The same method is used to calculate the average y coordinates of the four measurement points on the end surface of the electron gun assembly. The distance difference is calculated according to the average value of the y coordinates on the end surface of the high-frequency component and the end surface of the electron gun component, including: Among them, Δ y Indicates the distance difference.

7. The centering method according to claim 3, wherein: Moving the high frequency component to compensate for the scissors difference includes: Two electrically controlled motion platforms of the X and Z axes below the mobile fixed high frequency component device are used to compensate for the scissor difference.

8. The centering method according to claim 3, wherein: Moving the high frequency component to compensate for the distance difference includes: The electrically controlled motion platform of the Y-axis fixed below the high-frequency component is moved to compensate for the distance difference.

9. The centering method according to claim 1, wherein: The S5 also includes: The scissors difference is re-measured, and operations S4 to S5 are repeated until the scissors difference meets a preset condition.

10. A centering device for a traveling wave tube electron gun assembly and a high frequency assembly, used for implementing the centering method according to any one of claims 1 to 9, comprising: Three-coordinate measuring platform; An 8-axis electronically controlled motion platform is arranged on the three-coordinate measuring platform; welder; as well as The component clamping mold is arranged on the 8-axis electric control motion platform, and the component clamping mold includes a V-shaped frame and a clamp, and the V-shaped frame includes: A clamping portion, used to clamp the component to be aligned with the clamp, the longitudinal section of the clamping portion is V-shaped, and the length of the upper half of the clamping portion in the axial direction is greater than the length of the lower half of the clamping portion in the axial direction; as well as A fixing seat is arranged below the clamping portion, and the fixing seat is used to fix the clamping portion on an adjacent structure.

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