Processing method of Dewar base

Abstract

The present application discloses a method for processing a dewar base, belonging to the field of fusion reactor engineering technology. The processing method of the dewar base includes: connecting a skirt component, a cylinder, and a head to form a dewar base body; obtaining reference position data of the dewar base body; determining target drilling coordinates based on the reference position data and a target elevation, wherein the target elevation is a pre-set pipe installation height; drilling the dewar base body according to the target drilling coordinates to form a mounting hole in the cylinder; and welding the pipe to the mounting hole to form the dewar base. By first forming the dewar base body and then performing the drilling operation, and determining the drilling position based on the reference position data obtained by actual measurement of the dewar base body, the assembly quality and reliability of the dewar base can be improved.

Description

Technical Field

[0001] The present application belongs to the field of fusion reactor engineering technology, and in particular relates to a method for processing a dewar base. Background Art

[0002] The dewar is the outermost structure of a fusion reactor, providing a vacuum environment for internal components such as the vacuum chamber and superconducting magnets. The dewar base includes, but is not limited to, the skirt, barrel, and sealing edges. Mounting holes are often required on the barrel to facilitate the welding of wiring connections, thereby meeting various requirements of the fusion reactor (e.g., plasma heating, vacuum pumping, magnet feed lines, and diagnostics).

[0003] However, currently, mounting holes are often opened on the plate used to make the cylinder. Combined with manufacturing errors, assembly errors and the large size of the Dewar base itself, the position offset of the pipe after it is welded to the cylinder is relatively obvious, affecting subsequent wiring and assembly accuracy. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the related art. To this end, this application proposes a method for processing a dewar base. By first forming the dewar base body and then performing a hole drilling operation, and determining the drilling position based on the reference position data obtained by actual measurement of the dewar base body, the assembly quality and reliability of the dewar base can be improved.

[0005] In a first aspect, the present application provides a method for processing a Dewar base, comprising:

[0006] Connecting the skirt component, the barrel and the head to form the Dewar base body;

[0007] Obtaining reference position data of the Dewar base body;

[0008] Determining target drilling coordinates based on the reference position data and the target elevation, wherein the target elevation is a preset nozzle installation height;

[0009] Performing a drilling operation on the Dewar base body according to the target drilling coordinates to form a mounting hole on the cylinder;

[0010] The pipe is welded to the mounting hole to form a Dewar base.

[0011] According to the processing method of the Dewar base of the present application, compared with the related art method of first directly opening the mounting holes in the plate material for making the cylinder, then bending the plate material to form the cylinder, and welding the skirt component, cylinder and head together before welding the pipe, the embodiment of the present application first assembles the Dewar base body and then opens the mounting holes and welds the pipe. This can reduce the processing errors of the plate material production and the cumulative errors of the welding between the skirt component, cylinder and head, and improve the overall assembly accuracy. At the same time, drilling the cylinder based on the reference position data of the Dewar base body can improve the reliability of the drilling positioning, ensure the precise matching of the mounting hole position with the pipe requirements (such as the routing of plasma heating and vacuum exhaust), and improve the centering of the Dewar base after the pipe is welded.

[0012] According to one embodiment of the present application, the skirt component is provided with a positioning hole;

[0013] The obtaining of the reference position data of the Dewar base body comprises:

[0014] Obtaining a reference plane of the skirt component and a reference axis of the Dewar base body, wherein the reference axis and the reference plane are orthogonal;

[0015] The reference dividing line of the skirt component is determined according to the positioning hole and the reference axis, and the reference position data includes coordinate data corresponding to the reference plane and the reference dividing line.

[0016] According to one embodiment of the present application, obtaining the reference plane of the skirt component and the reference axis of the Dewar base body includes:

[0017] Measuring the top surface of the skirt component using a laser tracker to obtain a reference plane of the skirt component;

[0018] The inner edge of the skirt component and the inner edge of the cylinder are measured using a laser tracker to obtain the reference axis of the Dewar base.

[0019] According to one embodiment of the present application, determining the reference dividing line of the skirt component according to the positioning hole and the reference axis includes:

[0020] Measuring the positioning hole using the laser tracker to obtain the center coordinates of the positioning hole;

[0021] A reference dividing line is determined according to the center coordinates of the positioning hole and the reference axis.

[0022] According to one embodiment of the present application, the skirt component is provided with a plurality of circumferentially spaced positioning holes;

[0023] Determining the reference dividing line according to the center coordinates of the positioning hole and the reference axis includes:

[0024] Connecting the reference axis to the center coordinates of the positioning holes respectively to obtain a plurality of reference graduation lines corresponding to the positioning holes one by one;

[0025] Obtaining a plurality of reference angles, wherein the reference angle is a measurement angle between two adjacent reference graduation lines;

[0026] The reference angle and the target angle are compared to obtain a first comparison result. When the first comparison result satisfies a first preset condition, a reference graduation line corresponding to the reference angle is selected as a base graduation line.

[0027] According to one embodiment of the present application, welding the connecting pipe to the mounting hole includes:

[0028] Positioning and installing a measuring piece in the connecting pipe, wherein the measuring piece is provided with a marking point;

[0029] Measuring the marked points using a laser tracker to obtain reference coordinates;

[0030] Comparing the reference coordinates with the target drilling coordinates to obtain a second comparison result, and performing spot welding positioning on the connecting pipe and the cylinder when the second comparison result satisfies a second preset condition;

[0031] The connecting pipe and the cylinder are filled and welded.

[0032] According to one embodiment of the present application, performing fill welding on the connecting pipe and the cylinder includes:

[0033] The connecting pipe and the cylinder are subjected to segmented filling welding along the radial direction of the cylinder, and the marking points are measured in real time by using the laser tracker during the entire segmented filling welding process to adjust the welding direction.

[0034] According to one embodiment of the present application, determining the target drilling coordinates according to the reference position data and the target elevation includes:

[0035] Determining a target graduation line based on the reference position data and a target punching quantity, wherein the target punching quantity is equal to a preset number of pipes;

[0036] The target drilling coordinates are determined according to the target graduation line and the target elevation.

[0037] According to one embodiment of the present application, the target drilling coordinates include a center coordinate and a contour coordinate group of the mounting hole.

[0038] According to one embodiment of the present application, the drilling operation on the Dewar base body according to the target drilling coordinates includes:

[0039] Holes are punched symmetrically along the radial sides of the cylinder to form a plurality of circumferentially spaced mounting holes on the cylinder.

[0040] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0042] Figure 1 1 is a flow chart of a method for processing a Dewar base provided in an embodiment of the present application;

[0043] Figure 2 This is a schematic structural diagram of the Dewar base provided in an embodiment of the present application;

[0044] Figure 3 This is a schematic structural diagram of the Dewar base body provided in an embodiment of the present application;

[0045] Figure 4 This is one of the structural diagrams of the Dewar base provided in the embodiment of the present application before the pipes are welded;

[0046] Figure 5 This is the second structural diagram of the Dewar base provided in the embodiment of the present application before the pipe is welded;

[0047] Figure 6 It is a structural diagram of the cooperation between the measuring piece and the connecting pipe provided in an embodiment of the present application.

[0048] Reference numerals:

[0049] 1. Skirt parts; 11. Skirt inner ring; 12. Skirt outer ring; 13. Positioning hole;

[0050] 2. Cylinder; 21. Mounting hole;

[0051] 3. Connecting pipe; 4. End cap; 5. Measuring piece. DETAILED DESCRIPTION

[0052] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0053] Reference below Figures 1-6 The processing method of the Dewar base provided in an embodiment of the present application is described, and the processing method of the Dewar base includes steps 110, 120, 130, 140 and 150.

[0054] Step 110: Connect the skirt component 1, the cylinder 2 and the head 4 to form the Dewar base body.

[0055] It is understandable that, combined with Figure 2 and Figure 3 As shown, the skirt component 1, the cylinder 2 and the head 4 are connected by welding, so that the skirt component 1, the cylinder 2 and the seal are distributed from top to bottom to form the Dewar base body, so as to ensure the integrity and stability of the Dewar base body.

[0056] It should be noted that, combined with Figure 3 As shown, the skirt component 1 includes a connected inner skirt ring 11 and outer skirt ring 12. Both the inner skirt ring 11 and the outer skirt ring 12 are annular and arranged from the inside out. The inner skirt ring 11 supports the vacuum chamber, while the outer skirt ring 12 supports the outer shell. It should be noted that the thickness of the inner skirt ring 11 and the outer skirt ring 12 can be designed according to actual needs and are not specifically limited in this embodiment.

[0057] In this embodiment, combined with Figure 2 and Figure 3 As shown, the skirt inner ring 11 and the skirt outer ring 12 are both segmented structures, that is, multiple independent parts are formed by welding, which is convenient for manufacturing, transportation and installation, and is also conducive to improving material utilization.

[0058] Step 120: Obtain reference position data of the Dewar base body.

[0059] It is understandable that, due to the large size of the Dewar base body and the errors in the manufacturing and assembly process of the skirt component 1, the cylinder 2 and the head 4, by determining the reference position of the Dewar base body, an accurate positioning basis can be provided for subsequent punching and welding operations, ensuring the accuracy of punching and welding, and improving the processing accuracy and assembly quality of the Dewar base.

[0060] Step 130 : determining target drilling coordinates according to the reference position data and the target elevation, where the target elevation is a preset installation height of the pipe 3 .

[0061] It can be understood that the drilling position on the cylinder 2 is accurately determined by the reference position data and the target elevation, ensuring that the pipe 3 can be accurately installed at the predetermined height and position, which can effectively reduce the problem of position offset of the pipe 3 and improve the assembly accuracy and reliability of the Dewar base.

[0062] Step 140 : drilling the Dewar base body according to the target drilling coordinates to form the mounting hole 21 in the cylinder 2 .

[0063] It is understandable that, combined with Figure 4 As shown, the Dewar base body is punched according to the target drilling coordinates, thereby accurately controlling the drilling position and aperture size.

[0064] Step 150: Weld the pipe 3 to the mounting hole 21 to form a Dewar base.

[0065] It is understandable that, combined with Figure 2 As shown, according to the mounting hole 21 opened on the outer wall of the cylinder 2, the pipe 3 can be accurately welded to the cylinder 2 and meet the requirements of sealing, etc., ensuring that the installation position and angle of the pipe 3 meet the preset requirements, thereby improving the reliability of the Dewar base.

[0066] It is understandable that, compared to the related art in which the mounting hole 21 is first directly opened on the plate for making the cylinder 2, the plate is then bent to form the cylinder 2, and the skirt component 1, the cylinder 2 and the head 4 are welded together before welding the pipe 3, the embodiment of the present application first assembles the Dewar base body and then opens the mounting hole 21 and welds the pipe 3, which can reduce the processing error of the plate production and the cumulative error of the welding between the skirt component 1, the cylinder 2 and the head 4, thereby improving the overall assembly accuracy. At the same time, drilling the cylinder 2 based on the reference position data of the Dewar base body can improve the reliability of the drilling positioning, ensure the precise matching of the position of the mounting hole 21 with the requirements of the pipe 3 (such as the routing of plasma heating and vacuum exhaust), and improve the centering of the Dewar base after the pipe 3 is welded.

[0067] According to the processing method of the Dewar base provided in the embodiment of the present application, the assembly quality and reliability of the Dewar base can be improved by first forming the Dewar base body and then performing the drilling operation, and determining the drilling position based on the reference position data obtained by actual measurement of the Dewar base body.

[0068] In some embodiments, combined Figure 2 、 Figure 3 and Figure 5 As shown, the skirt component 1 is provided with positioning holes 13. It should be noted that the number and size of the positioning holes 13 can be designed according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0069] It is understandable that a positioning hole 13 is provided on the top of the skirt outer ring 12 to ensure the accuracy of the subsequent connection with the shell and to avoid wiring.

[0070] In some embodiments, obtaining the reference position data of the Dewar base body in step 120 includes:

[0071] Step 121: obtaining a reference plane of the skirt component 1 and a reference axis of the Dewar base body, wherein the reference axis and the reference plane are orthogonal;

[0072] Step 122: Determine the reference dividing line of the skirt component 1 according to the positioning hole 13 and the reference axis. The reference position data includes coordinate data corresponding to the reference plane and the reference dividing line.

[0073] It is understandable that, on the one hand, considering that most of the components of the fusion reactor device are arranged on the top surface of the skirt component 1, by obtaining the reference plane aligned with the theoretical horizontal plane of the skirt component 1 and the reference axis aligned with the theoretical overall symmetry axis of the dewar base, an orthogonal coordinate system is formed to constrain the influence of welding deformation, accurately determine the overall position and posture of the dewar base body, eliminate assembly cumulative errors, and improve the centering of the mounting hole 21 position with the dewar base. On the other hand, the reference axis is fitted with the existing positioning hole 13 to form a reference dividing line to calibrate the starting angle of the circumferential opening, reduce the circumferential cumulative error, and thus provide an angle reference for the mounting hole 21 on the cylinder 2, ensure the circumferential uniformity of the multiple pipes 3 after being welded to the cylinder 2, and improve the processing accuracy of the dewar base to adapt to the complex routing and functional requirements of the fusion reactor device.

[0074] In some embodiments, obtaining the reference plane of the skirt component 1 and the reference axis of the Dewar base body in step 121 includes:

[0075] Step 1211: Use a laser tracker to measure the top surface of the skirt component 1 to obtain a reference plane of the skirt component 1;

[0076] Step 1212: Use a laser tracker to measure the inner edge of the skirt component 1 and the inner edge of the cylinder 2 to obtain the reference axis of the Dewar base.

[0077] It can be understood that a laser tracker is used to perform multi-point point cloud scanning on the upper surface of the inner ring 11 of the skirt to obtain multiple measurement data, and the measurement data are fitted by least squares method and other algorithms to determine a reference plane that can truly reflect the actual verticality of the Dewar base body after assembly; a laser tracker is used to perform spiral scanning on the inner edge of the inner ring 11 of the skirt and the inner edge of the cylinder 2, that is, multiple circumferential measurement points of different cross sections are collected to obtain multiple measurement data, and the measurement data are fitted by spatial straight line fitting and other algorithms to determine a reference axis that can truly reflect the actual coaxiality of the Dewar base body after assembly, so as to improve the positioning accuracy as much as possible.

[0078] In some embodiments, determining the reference dividing line of the skirt component 1 according to the positioning hole 13 and the reference axis in step 122 includes:

[0079] Step 1221: Use a laser tracker to measure the positioning hole 13 to obtain the center coordinates of the positioning hole 13;

[0080] Step 1222 : Determine the reference dividing line according to the center coordinates of the positioning hole 13 and the reference axis.

[0081] It can be understood that by performing a three-dimensional scanning of the inner edge of the positioning hole 13 by a laser tracker, that is, collecting multiple circumferential measurement points and determining the center coordinates of the positioning hole 13 by least squares circle fitting and other algorithms, and then projecting the center coordinates of the positioning hole 13 onto the reference plane, and determining the reference dividing line in conjunction with the projection of the reference axis on the reference plane, the position deviation of the nozzle 3 caused by the accumulation of measurement and processing errors can be reduced, and the overall processing and assembly quality of the Dewar base can be improved.

[0082] In some embodiments, combined Figure 2 、 Figure 3 and Figure 5 As shown, the skirt component 1 is provided with a plurality of circumferentially spaced positioning holes 13. It should be noted that the number and specific distribution of the positioning holes 13 can be designed according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0083] It can be understood that by providing a plurality of positioning holes 13, the connection strength between the Dewar base and the remaining components is increased, and the positioning accuracy and reliability are improved.

[0084] In some embodiments, in step 1222, determining the reference dividing line according to the center coordinates of the positioning hole 13 and the reference axis includes:

[0085] Step 12221: Connect the reference axis to the center coordinates of each positioning hole 13 to obtain a plurality of reference graduation lines corresponding to the positioning holes 13;

[0086] Step 12222: Obtain multiple reference angles, where the reference angle is the measured angle between two adjacent reference graduation lines.

[0087] Step 12223: Compare the reference angle and the target angle to obtain a first comparison result. If the first comparison result satisfies a first preset condition, select a reference graduation line corresponding to the reference angle as a reference graduation line.

[0088] It is understood that by connecting the center coordinates of each locating hole 13 and the projections of the reference axis onto the reference plane, multiple reference index lines are obtained, allowing a preliminary determination of multiple possible index line directions. Subsequently, the angles between all adjacent reference index lines are measured to obtain multiple reference angles that accurately reflect the circumferential distribution of the locating holes 13. Finally, these reference angles are compared to determine whether the distribution of the locating holes 13 meets the required uniformity. This ensures the reliability of the reference index line determination, effectively reduces the overall error caused by local deviations in the machining of the locating holes 13, and ensures the machining and assembly quality of the Dewar base.

[0089] For example, in combination Figure 4 and Figure 5 As shown, four locating holes 13 are circumferentially spaced apart on the outer ring 12 of the skirt, i.e., the target angle is 90°. A represents the reference plane, C represents the reference axis, and D represents the reference index line. The projections of each locating hole 13 on the reference plane are connected with the projections of the reference axis on the reference plane to obtain four reference index lines, which in turn yield four reference angles (θ1, θ2, θ3, and θ4). These four reference angles are compared with 90° to determine the deviation between each reference angle and 90°. If all deviations are less than a threshold, the reference index line corresponding to the reference angle with the smallest deviation is selected as the reference index line. In this embodiment, all deviations are 0, so any one of the four reference index lines can be selected as the reference index line.

[0090] In some embodiments, in step 12223, if the first comparison result does not meet the first preset condition, compensation measures are taken and a reference graduation line is determined.

[0091] It can be understood that a reference angle with the smallest deviation from the target angle is selected, a reference dividing line of one of the sides constituting the reference angle is used as an edge and a new compensation dividing line is marked on the reference plane in combination with the target angle, and one of the compensation dividing line and the reference dividing line is selected as the reference dividing line.

[0092] In some embodiments, determining the target drilling coordinates according to the reference position data and the target elevation in step 130 includes:

[0093] Step 131: Determine a target index line based on the reference position data and the target number of holes to be punched, where the target number of holes to be punched is equal to the preset number of pipes 3;

[0094] Step 132: Determine the target drilling coordinates according to the target graduation line and the target elevation.

[0095] It is understandable that, based on the reference dividing line and the target number of holes, the angular distribution of each mounting hole 21 relative to the reference dividing line can be determined to ensure that the multiple mounting holes 21 can be evenly distributed circumferentially on the outer wall of the cylinder 2.

[0096] In some embodiments, when the target punching number is greater than 1, multiple target graduation lines and target punching coordinates are provided and correspond one to one, and one of the target graduation lines coincides with the reference graduation line.

[0097] It can be understood that by aligning one of the target graduation lines with the reference graduation line, the process of determining multiple target graduation lines is simplified, and the drilling accuracy and the uniformity of the distribution of the mounting holes 21 are improved.

[0098] In some embodiments, when all deviation values ​​are smaller than a threshold, a portion of the plurality of target graduation lines corresponds one-to-one with the plurality of reference graduation lines, so as to further simplify the determination of the target punching coordinates while ensuring the accuracy of the punching.

[0099] For example, continue with the above example, combined with Figure 5 As shown in the figure, G represents the target graduation line. The target number of holes is 16, that is, the theoretical angle between two adjacent target graduation lines is 22.5°. Therefore, we first determine that 4 of the 16 target graduation lines coincide with the 4 reference graduation lines, and then determine the remaining 12 target graduation lines based on the angle between the two target graduation lines being 22.5° and starting with the reference graduation line D. Figure 4 As shown, the target elevation L is combined with the reference plane A to determine the target plane B, and then the coordinates of each target drilling are determined according to G and B.

[0100] In some embodiments, the target drilling coordinates include a center coordinate and a contour coordinate group of the mounting hole 21 .

[0101] It is understood that the center coordinates of mounting hole 21 refer to the three-dimensional position of mounting hole 21. Specifically, the relationship between the target elevation and the reference plane, as well as the relationship between the target index line and the reference axis, can be used to determine the drilling center of mounting hole 21 on cylinder 2, thereby improving the installation accuracy of nozzle 3. The contour coordinate axis of mounting hole 21 refers to the three-dimensional positional set of multiple points on the edge of mounting hole 21. This is used to determine the shape and size of mounting hole 21, improve drilling accuracy, and provide a reliable positioning reference for subsequent nozzle 3 welding.

[0102] For example, following the above example, Figure 4 As shown, the target elevation L and the reference plane A are used to determine the target plane B, and then the target plane B is determined according to the combination of Figure 5The target graduation line G shown determines the center coordinate E of the mounting hole 21 and determines the contour coordinate group F of the mounting hole 21 according to the preset size and shape of the mounting hole 21 so as to facilitate the subsequent drilling operation on the barrel 2.

[0103] In some embodiments, the step 140 of performing a hole punching operation on the Dewar base body according to the target hole punching coordinates includes:

[0104] Holes are punched symmetrically along both sides of the cylindrical body 2 in the radial direction to form a plurality of circumferentially spaced mounting holes 21 on the cylindrical body 2 .

[0105] It can be understood that in the process of punching multiple mounting holes 21 in sequence, a punching operation is first performed on one side of the cylinder 2 along the radial direction, and then a punching operation is performed on one side of the cylinder 2 along the radial direction to form two symmetrical mounting holes 21 in the cylinder 2, and so on to complete the formation of all mounting holes 21. This can ensure that the stress distribution on both sides of the cylinder 2 is uniform during the punching operation, reducing the possibility of deformation or damage to the Dewar base due to local stress concentration.

[0106] In some embodiments, welding the pipe 3 to the mounting hole 21 in step 150 includes:

[0107] Step 151: Position the measuring piece 5 in the pipe 3, where the measuring piece 5 is provided with a marking point;

[0108] Step 152: Use a laser tracker to measure the marked points to obtain reference coordinates;

[0109] Step 153: Compare the reference coordinates and the target drilling coordinates to obtain a second comparison result. If the second comparison result satisfies a second preset condition, spot welding is performed on the pipe 3 and the cylinder 2.

[0110] Step 154 ​​, performing filling welding on the pipe 3 and the cylinder 2 .

[0111] Exemplarily, the connection method between the measuring member 5 and the connecting pipe 3 includes but is not limited to spot welding.

[0112] It is understandable that, combined with Figure 6As shown, the measuring piece 5 is fixed in the pipe 3, and the marking point H of the measuring piece 5 is located on the axis of the pipe 3, thereby providing a certain auxiliary positioning function for the welding process of the pipe 3. After the pipe 3 is inserted into the mounting hole 21, the laser tracker measures the marking point and records the three-dimensional reference coordinates. The reference coordinates are compared with the center coordinates, and the deviation between the two is calculated. The posture of the pipe 3 is adjusted according to the deviation until the deviation is less than a threshold value. This allows the current position of the pipe 3 in the mounting hole 21 to be determined to be accurate, so that the axis of the pipe 3 is perpendicular to the reference axis, thereby using spot welding for preliminary positioning and connection, and fill welding to strengthen the connection strength.

[0113] In some embodiments, the filling welding of the pipe 3 and the cylinder 2 in step 154 ​​includes:

[0114] The tube 3 and the cylinder 2 are butt-jointed and filled in sections along the radial direction of the cylinder 2. During the entire process of the butt-jointed welding, a laser tracker is used to measure the marking points in real time to adjust the welding direction.

[0115] It is understood that the connection between the nozzle 3 and the cylinder 2 is divided into multiple sections along the radial direction of the cylinder 2, and the filling welding is performed section by section. Before each section of the filling welding, the welding direction is adjusted according to the deviation between the current reference coordinates and the center coordinates to effectively control welding deformation and improve welding flexibility and accuracy.

[0116] For example, you can start with the middle section and weld the sections symmetrically in the radial direction to ensure uniform stress distribution and minimize deformation during welding. Because the stainless steel pipe 3 experiences welding shrinkage, if the marked point is measured to be offset to one side, the welding input can be increased on the other side. This ensures that the marked point remains within the allowable deviation range throughout the welding process, ensuring the welding accuracy of the pipe 3.

[0117] In some embodiments, step 150 involves welding the pipe 3 to the mounting hole 21 , followed by:

[0118] Remove the measuring element 5 from the connecting piece 3 .

[0119] In some embodiments, the method for processing the entire Dewar base includes the following steps:

[0120] The top surface of the skirt inner ring 11 is measured using a laser tracker to obtain a reference plane by fitting;

[0121] The inner edge of the skirt inner ring 11 and the inner edge of the cylinder 2 are measured using a laser tracker to obtain a reference axis orthogonal to the reference plane;

[0122] Measure each positioning hole 13 using a laser tracker to obtain the center coordinates of each positioning hole 13;

[0123] Determine the reference dividing line according to the center coordinates of each positioning hole 13 and the reference axis;

[0124] According to the center coordinates of each positioning hole 13, the relationship between the target elevation and the reference plane, the reference graduation line and the target number of holes, the center coordinates of each mounting hole 21 are determined and marked on the cylinder 2. After marking, the marked position is re-measured using a laser tracker;

[0125] If the mark position is correct after re-measurement, the outline of the mounting hole 21 is drawn on the cylinder 2 according to the center coordinates of the mounting hole 21 and the size and shape of the mounting hole 21 to obtain the outline coordinates of the mounting hole 21;

[0126] An industrial robot arm equipped with a plasma cutting gun is used to punch holes in the cylinder along the contour line, and polishing is performed after the punching operation, and a symmetrical punching method is adopted in the punching operation;

[0127] Position each pipe 3 in the corresponding mounting hole 21 in sequence, and use a laser tracker to measure the marking points of the measuring piece 5 spot-welded in the pipe 3 to obtain reference coordinates;

[0128] Adjust the position of the pipe 3 until the reference coordinates coincide with the center coordinates of the mounting hole 21, and then fix the pipe 3 and the cylinder 2 by spot welding.

[0129] The pipe 3 and the cylinder 2 are symmetrically filled and welded in sections.

[0130] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0131] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0132] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0133] In the description of this application, “plurality” means two or more.

[0134] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0135] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0136] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0137] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for processing a Dewar base, characterized in that: include: Connecting the skirt component, the cylinder and the head to form the Dewar base body, wherein the skirt component is provided with a plurality of circumferentially spaced positioning holes; Obtaining reference position data of the Dewar base body; Determining target drilling coordinates based on the reference position data and the target elevation, wherein the target elevation is a preset nozzle installation height; Performing a drilling operation on the Dewar base body according to the target drilling coordinates to form a mounting hole on the cylinder; The connecting pipe is welded to the mounting hole to form a Dewar base; wherein the obtaining of the reference position data of the Dewar base body comprises: Obtaining a reference plane of the skirt component and a reference axis of the Dewar base body, wherein the reference axis and the reference plane are orthogonal; Determine a reference dividing line of the skirt component according to the positioning hole and the reference axis, wherein the reference position data includes coordinate data corresponding to the reference plane and the reference dividing line; The step of determining the reference dividing line of the skirt component according to the positioning hole and the reference axis comprises: Connecting the reference axis to the center coordinates of the positioning holes respectively to obtain a plurality of reference graduation lines corresponding to the positioning holes one by one; Obtaining a plurality of reference angles, wherein the reference angle is a measurement angle between two adjacent reference graduation lines; The reference angle and the target angle are compared to obtain a first comparison result. When the first comparison result satisfies a first preset condition, a reference graduation line corresponding to the reference angle is selected as a base graduation line.

2. The method for processing the Dewar base according to claim 1, characterized in that: The step of obtaining the reference plane of the skirt component and the reference axis of the Dewar base body comprises: Measuring the top surface of the skirt component using a laser tracker to obtain a reference plane of the skirt component; The inner edge of the skirt component and the inner edge of the cylinder are measured using a laser tracker to obtain the reference axis of the Dewar base.

3. The method for processing the Dewar base according to claim 2, characterized in that: The step of determining the reference dividing line of the skirt component according to the positioning hole and the reference axis comprises: Measuring the positioning hole using the laser tracker to obtain the center coordinates of the positioning hole; A reference dividing line is determined according to the center coordinates of the positioning hole and the reference axis.

4. The method for processing a Dewar base according to any one of claims 1 to 3, characterized in that: The step of welding the connecting pipe to the mounting hole comprises: Positioning and installing a measuring piece in the connecting pipe, wherein the measuring piece is provided with a marking point; Measuring the marked points using a laser tracker to obtain reference coordinates; Comparing the reference coordinates with the target drilling coordinates to obtain a second comparison result, and performing spot welding positioning on the connecting pipe and the cylinder when the second comparison result satisfies a second preset condition; The connecting pipe and the cylinder are filled and welded.

5. The method for processing the Dewar base according to claim 4, characterized in that: Filling welding is performed on the connecting pipe and the cylinder, including: The connecting pipe and the cylinder are subjected to segmented filling welding along the radial direction of the cylinder, and the marking points are measured in real time by using the laser tracker during the entire segmented filling welding process to adjust the welding direction.

6. The method for processing a Dewar base according to any one of claims 1 to 3, characterized in that: The determining of target drilling coordinates according to the reference position data and the target elevation includes: Determining a target graduation line based on the reference position data and a target punching quantity, wherein the target punching quantity is equal to a preset number of pipes; The target drilling coordinates are determined according to the target graduation line and the target elevation.

7. The method for processing the Dewar base according to claim 6, characterized in that: The target drilling coordinates include a center coordinate and a contour coordinate group of the mounting hole.

8. The method for processing a Dewar base according to any one of claims 1 to 3, characterized in that: The drilling operation on the Dewar base body according to the target drilling coordinates includes: Holes are punched symmetrically along the radial sides of the cylinder to form a plurality of circumferentially spaced mounting holes on the cylinder.

Images