CN115488476A - Device and method for stud welding of inner wall of vacuum chamber of tokamak device - Google Patents
Device and method for stud welding of inner wall of vacuum chamber of tokamak device Download PDFInfo
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- CN115488476A CN115488476A CN202211055460.5A CN202211055460A CN115488476A CN 115488476 A CN115488476 A CN 115488476A CN 202211055460 A CN202211055460 A CN 202211055460A CN 115488476 A CN115488476 A CN 115488476A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/20—Stud welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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Abstract
The application belongs to the technical field of nuclear fusion, and particularly relates to a device and a method for stud welding of the inner wall of a vacuum chamber of a tokamak device; the device, including: the positioning hole plate, the fixing bracket and the positioning pin are arranged on the positioning hole plate; fixing brackets are fixed at two ends of the positioning pore plate; the fixed support is matched with the window flange of the vacuum chamber in shape, and a threaded hole is processed on the fixed support and used for fixing the fixed support on the window flange of the vacuum chamber; the positioning hole plate is provided with at least one positioning through hole, the position of the positioning through hole corresponds to the welding position, and the positioning through hole is used for allowing a welding gun head to be inserted in the welding process of the welding stud to position and weld the welding stud; the positioning pin is arranged on the positioning hole plate and used for placing a measuring target ball of the laser tracker. The positioning through holes are positioned through the positioning hole plates, and the welding gun heads are positioned through the positioning through holes, so that the welding studs are positioned. When in welding, the welding gun head is only required to penetrate into the positioning through hole for welding operation, and the condition of partial welding or stud deflection can not occur.
Description
Technical Field
The application belongs to the technical field of nuclear fusion, and particularly relates to a device and a method for stud welding of the inner wall of a vacuum chamber of a tokamak device.
Background
The inside of the vacuum chamber of the nuclear fusion device is provided with a divertor, a first wall, a limiter, an air supply system, a glow discharge cleaning system, a plasma diagnostic system and the like. The permanent support of the parts mainly adopts door type support piers and welding studs. Although stud welding can solve the welding problem of studs by introducing stud welding, since the vacuum chamber material is alloy Inconel625, in order to ensure the quality of welding seams and meet the requirement of vacuum cleanliness, the stud welding material needs to be carefully selected.
At present, stud welding still stays in the traditional manual marking and dotting positioning mode, and measurement and marking are carried out through positioning references such as round holes on workpieces, so that time and labor are wasted, and deviation is easy to occur. When a welding gun is operated to weld, the stud is easy to deviate from a position to be welded or skew occurs, so that the stud is inaccurate in positioning or the accuracy of the angle between the stud and a workpiece is poor. In addition, because the vacuum chamber is of a double-layer thin-wall all-welded annular structure with a D-shaped section, the welding positioning difficulty is higher, and the positioning precision requirement cannot be met without the aid of an accurate welding positioning tool and high-precision measuring equipment.
Disclosure of Invention
The application aims to provide a device and a method for welding studs on the inner wall of a vacuum chamber of a tokamak device, and the device and the method solve the problems that in the prior art, when a welding gun is operated to weld, the studs are easy to deviate from positions to be welded or skew, so that the studs are not accurately positioned or the angle precision between the studs and a workpiece is poor.
The technical scheme for realizing the purpose of the application is as follows:
a first aspect of an embodiment of the present application provides a device for stud welding of an inner wall of a vacuum chamber of a tokamak device, where the device includes: the positioning hole plate, the fixing bracket and the positioning pin are arranged on the positioning hole plate;
the fixing supports are fixed at two ends of the positioning hole plate; the fixed support is matched with the window flange of the vacuum chamber in shape, and a threaded hole is processed on the fixed support and used for fixing the fixed support on the window flange of the vacuum chamber;
the positioning hole plate is provided with at least one positioning through hole, and the position of the positioning through hole corresponds to the welding position and is used for inserting a welding gun head in the welding process of the welding stud so as to position and weld the welding stud;
the positioning pin is arranged on the positioning hole plate and used for placing a measuring target ball of the laser tracker.
Optionally, the positioning pin has the same outer diameter as the welding gun head, and a tapered hole is machined at one end of the positioning pin so as to place the laser tracker measuring target ball.
Optionally, the positioning through hole is in clearance fit with the welding gun head, and the clearance is smaller than 0.1mm.
Optionally, the weld stud includes: a threaded portion and a polish rod portion connected to each other;
the diameter of the polished rod part is smaller than or equal to the outer diameter of the threaded part, a conical arc starting part is arranged on the end face of the polished rod part in a protruding mode, and an arc striking knot is machined on the arc starting part.
Optionally, the arc starting portion has a bottom side surface inclined relative to a horizontal plane, and an inclination angle of the bottom side surface relative to the horizontal plane is 5 ° to 10 °.
Optionally, the outer diameter of the threaded part is 5-14 mm; the diameter of the polished rod part is 5-12 mm; the size of the arc striking junction is
Optionally, the welding stud is made of 316L stainless steel.
Optionally, the device is made of a material different from that of the vacuum chamber and the welding stud.
Optionally, the device is made of a material with conductivity superior to that of the vacuum chamber and the welding stud or an insulating material.
Optionally, the vacuum chamber and the welding stud are made of Inconel625 material and 316L material, respectively, and the device is made of aluminum or copper.
A second aspect of the embodiments of the present application provides a method for stud welding on an inner wall of a vacuum chamber of a tokamak apparatus, which is applied to any one of the apparatuses for stud welding on an inner wall of a vacuum chamber of a tokamak apparatus provided in the first aspect of the embodiments of the present application, where the method includes:
the method comprises the steps of firstly installing any one device for stud welding on the inner wall of a vacuum chamber of the tokamak device, which is provided by the first aspect of the embodiment of the application, at a corresponding position of the vacuum chamber, and then placing a positioning pin into a positioning through hole on a positioning hole plate;
placing a measurement target ball of a laser tracker into the positioning pin, taking an axis of a welding stud created in advance as a positioning reference, and observing the position deviation between the positioning and the axis in real time in measurement software so as to adjust the position of the device for welding the stud on the inner wall of the vacuum chamber of the Tokamak device until the requirement of the positioning precision of the welding stud is met;
when the stud welding is carried out, the welding gun head is used for clamping the welding stud to be inserted into the positioning through hole for welding.
Optionally, the axis of the weld stud is obtained by:
distributing enough measuring reference points in the vacuum chamber according to the mounting and positioning precision of the parts in the vacuum chamber, the measuring station position and the measuring station number of the laser tracker;
establishing measuring stations of the laser tracker inside and outside the vacuum chamber, leveling each measuring station and measuring all measuring reference points which can be seen by the measuring station;
performing space combined precision control net adjustment calculation on the measurement data of all the measurement stations;
carrying out optimal fitting on the measurement reference point after the adjustment calculation of the space combined precision control network and the measurement reference point of the measurement reference network of the tokamak device, thereby transferring the measurement reference network of the tokamak device into a vacuum chamber and establishing the measurement reference network of the vacuum chamber;
establishing a measuring station of a laser tracker near a position where welding of the welding stud is required in the vacuum chamber, leveling the laser tracker and measuring an enough measuring reference point;
carrying out optimal fitting on the measured measuring reference point and the measuring reference point of the vacuum chamber measuring reference net to complete the positioning of the laser tracker under the assembly coordinate system of the Tokamak device;
and (3) introducing a welding stud CAD model into the laser tracker measurement software and adjusting the model to a theoretical welding position to obtain the axis of the welding stud.
The beneficial technical effect of this application lies in:
according to the device and the method for welding the studs on the inner wall of the vacuum chamber of the Tokamak device, the positioning through holes are positioned through the positioning hole plates, and the welding gun heads are positioned through the positioning through holes, so that the welding studs are positioned. Only need penetrate the welding gun head and carry out welding operation in the location through-hole when the welding, the skew condition of welding or double-screw bolt just can not appear, the position that needs the welding stud welding is accurately found, rework because of the inaccurate location has been reduced, the problem of double-deck thin wall D shape cross-section real empty room inner wall accurate positioning of double-deck stud is solved, and make welding process simple and convenient, quick, reliable, the welding precision is high, and the outward appearance is good, and efficiency and welding stability are improved, adopt quick grafting positioning mechanism, moreover, the steam generator is simple in structure, the modularized design, make things convenient for the dismouting maintenance, the location is accurate, work piece welding efficiency and quality are improved.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present disclosure;
fig. 2 is a schematic installation diagram of an apparatus for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a positioning pin in an apparatus for stud welding on an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present application;
fig. 4 is a schematic view illustrating installation of a positioning pin and a measuring target ball in a device for stud welding on the inner wall of a vacuum chamber of a tokamak device according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a welding stud in an apparatus for stud welding on an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present application;
FIG. 6 is an axial view of a weld stud in an apparatus for stud welding an inner wall of a vacuum chamber of a Tokamak apparatus according to an embodiment of the present disclosure;
FIG. 7 is a schematic flow chart illustrating a method for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present disclosure;
fig. 8 is a schematic measurement positioning diagram of a method for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present application.
In the figure:
1-positioning the orifice plate; 11-positioning the through hole;
2-fixing the bracket; 21-a threaded hole;
3-positioning pins; 31-a tapered hole;
4-vacuum chamber; 41-window flange;
5-welding a stud; 51-a threaded portion; 52-polished rod section; 53-a flash portion; 54-arc initiation junction;
6-laser tracker; 61-measuring the target ball.
Detailed Description
In order to make the technical solutions in the embodiments of the present application more comprehensible to those skilled in the art, the following description will be made in detail and completely with reference to the accompanying drawings in the embodiments of the present application. It should be apparent that the embodiments described below are only some of the embodiments of the present application, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without inventive step, are within the scope of the present application.
Referring to fig. 1, the drawing is a schematic structural diagram of an apparatus for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present application.
The device that is used for inside wall stud welding of tokamak device vacuum chamber that this application embodiment provided includes: the positioning hole plate 1, the fixing support 2 and the positioning pin 3;
two ends of the positioning hole plate 1 are fixed with fixing brackets 2; the fixing bracket 2 is matched with the window flange 41 of the vacuum chamber 4 in shape, and is provided with a threaded hole 21 for fixing the fixing bracket 2 on the window flange 41 of the vacuum chamber 4, as shown in fig. 2;
the positioning hole plate 1 is provided with at least one positioning through hole 11, and the position of the positioning through hole 11 corresponds to the welding position and is used for inserting a welding gun head to weld the welding stud 5 in a positioning manner in the welding process of the welding stud 5;
the positioning pin 3 is arranged on the positioning hole plate 1 and used for placing a measuring target ball of the laser tracker.
In this application embodiment, fixed bolster 2 and locating hole board 1 adopt split type structure, have reduced the processing requirement of fixed bolster 2 with locating hole board 1, can conveniently realize connecting fixedly through the screw, and can change fixed bolster 2 and locating hole board 1 as required, have improved the device's commonality and utilization ratio. The positioning through hole 11 is positioned through the positioning hole plate 1, and the welding stud 5 is positioned by positioning the welding gun head through the positioning through hole 11. When welding, only a welding gun head is required to penetrate into the positioning through hole 11 for welding operation, the condition of partial welding or skew stud can not occur, the position of a stud 5 to be welded is accurately found, rework caused by inaccurate positioning is reduced, the problem of accurate positioning of the stud on the inner wall of the double-layer thin-wall D-shaped cross-section vacuum chamber is solved, the welding process is simple, convenient, quick and reliable, the welding precision is high, the appearance is good, the efficiency and the welding stability are improved, a quick inserting and positioning mechanism is adopted, the structure is simple, the modular design is realized, the disassembly and assembly maintenance are convenient, the positioning is accurate, and the welding efficiency and the welding quality of workpieces are improved.
In some possible implementations of the embodiments of the present application, as shown in fig. 3, the locating pin 3 has the same outer diameter as the torch head, and a tapered hole 31 is formed at one end thereof to receive a measurement target ball 61 of the laser tracker, as shown in fig. 4.
In one example, the locating through hole 11 is a clearance fit with the torch head, the clearance being less than 0.1mm.
In some possible implementations of the embodiments of the present application, as shown in fig. 5, the welding stud 5 includes: a threaded portion 51 and a polished rod portion 52 connected to each other;
the diameter of the polished rod part 52 is smaller than or equal to the outer diameter of the threaded part 51, a conical arc striking part 53 is arranged on the end face of the polished rod part 52 in a protruding mode, and an arc striking knot 54 is machined on the arc striking part 53.
In one example, the arcing section 53 has a bottom side inclined with respect to a horizontal plane, and the bottom side is inclined with respect to the horizontal plane at an angle of 5 ° to 10 °, as shown in fig. 6.
In another example, the outer diameter of the threaded portion 51 is 5 to 14mm; the diameter of the polished rod part 52 is 5-12 mm; the size of the arc striking junction 54 is
Because the material of vacuum chamber 4 is Inconel625, in order to guarantee that the welding seam accords with the vacuum cleanliness requirement, in practical application, welding stud 5 can adopt 316L stainless steel material.
In some possible implementations of the present application, the material of the device is different from that of the vacuum chamber 4 and the welding stud 5, so as to prevent an arc from being formed between the device and the vacuum chamber 4 or the welding stud 5 during welding, and the device is mistakenly welded with the vacuum chamber 4 or the welding stud 5, so that the device can be conveniently removed after the welding of the welding stud 5 is completed.
In one example, the device uses a material that is more electrically conductive than the vacuum chamber 4 and weld stud 5 or uses an insulating material.
As an example, the vacuum chamber 4 and the weld stud 5 are made of Inconel625 and 316L, respectively, and the device is made of aluminum or copper.
The device for welding the stud on the inner wall of the vacuum chamber of the Tokamak device, provided by the embodiment of the application, positions the positioning through hole through the positioning hole plate, positions the welding gun head through the positioning through hole and positions the welding stud. Only need penetrate the welding gun head and carry out welding operation in the location through-hole when the welding, the skew condition of welding or double-screw bolt just can not appear, the position that needs the welding stud welding is accurately found, rework because of the inaccurate location has been reduced, the problem of double-deck thin wall D shape cross-section real empty room inner wall accurate positioning of double-deck stud is solved, and make welding process simple and convenient, quick, reliable, the welding precision is high, and the outward appearance is good, and efficiency and welding stability are improved, adopt quick grafting positioning mechanism, moreover, the steam generator is simple in structure, the modularized design, make things convenient for the dismouting maintenance, the location is accurate, work piece welding efficiency and quality are improved.
Based on the device for stud welding of the inner wall of the vacuum chamber of the tokamak device provided by the embodiment, the embodiment of the application also provides a method for stud welding of the inner wall of the vacuum chamber of the tokamak device, and the method is applied to any device for stud welding of the inner wall of the vacuum chamber of the tokamak device provided by the embodiment.
Referring to fig. 7, the figure is a schematic flow chart of a method for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus according to an embodiment of the present application.
The method for stud welding of the inner wall of the vacuum chamber of the tokamak device provided by the embodiment of the application comprises the following steps:
s701: the device for stud welding of the inner wall of the vacuum chamber of the tokamak device provided by the embodiment is initially installed at the corresponding position of the vacuum chamber, and then the positioning pin is placed in the positioning through hole on the positioning hole plate;
s702: placing a measuring target ball of a laser tracker into a positioning pin, taking an axis of a welding stud created in advance as a positioning reference, and observing the position deviation between the positioning and the axis in real time in measurement software so as to adjust the position of a device for welding the stud on the inner wall of the vacuum chamber of the tokamak device until the requirement of the positioning precision of the welding stud is met;
s703: when the stud welding is carried out, the welding gun head is used for clamping the welding stud to be inserted into the positioning through hole for welding.
In some possible implementations of embodiments of the present application, the axis of the weld stud is obtained by:
distributing enough measurement reference points in the vacuum chamber according to the installation positioning precision of the parts in the vacuum chamber, the measurement station position of the laser tracker and the measurement station number;
establishing measuring stations of the laser tracker inside and outside the vacuum chamber, leveling each measuring station and measuring all measuring reference points which can be seen by the measuring station;
performing adjustment calculation of a spatial joint precision measurement network (USMN) on the measurement data of all stations;
carrying out optimal fitting on the measurement reference point after the adjustment calculation of the space combined precision control network and the measurement reference point of the measurement reference network of the tokamak device, thereby transferring the measurement reference network of the tokamak device into a vacuum chamber and establishing the measurement reference network of the vacuum chamber;
establishing a measuring station of the laser tracker near the position where the welding stud needs to be welded in the vacuum chamber, leveling the laser tracker 6 and measuring enough measuring datum points, as shown in fig. 8;
carrying out optimal fitting on the measured measuring datum point and the measuring datum point of the vacuum chamber measuring datum net to complete the positioning of the laser tracker under the assembly coordinate system of the tokamak device;
and (3) introducing a welding stud CAD model into the laser tracker measurement software and adjusting to a theoretical welding position to obtain the axis of the welding stud.
According to the method for welding the stud on the inner wall of the vacuum chamber of the Tokamak device, the positioning through hole is positioned through the positioning hole plate, the welding gun head is positioned through the positioning through hole, and therefore the welding stud is positioned. Only need penetrate the welding gun head and carry out welding operation in the location through-hole when the welding, the skew condition of welding or double-screw bolt just can not appear, the position that needs the welding stud welding is accurately found, rework because of the inaccurate location has been reduced, the problem of double-deck thin wall D shape cross-section real empty room inner wall accurate positioning of double-deck stud is solved, and make welding process simple and convenient, quick, reliable, the welding precision is high, and the outward appearance is good, and efficiency and welding stability are improved, adopt quick grafting positioning mechanism, moreover, the steam generator is simple in structure, the modularized design, make things convenient for the dismouting maintenance, the location is accurate, work piece welding efficiency and quality are improved.
The present application has been described in detail with reference to the drawings and examples, but the present application is not limited to the above examples, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application. The prior art can be used for all the matters not described in detail in this application.
Claims (12)
1. An apparatus for stud welding of an inner wall of a vacuum chamber of a tokamak apparatus, the apparatus comprising: the positioning hole plate, the fixing bracket and the positioning pin are arranged on the positioning hole plate;
the fixing supports are fixed at two ends of the positioning hole plate; the fixed support is matched with the window flange of the vacuum chamber in shape, and a threaded hole is processed on the fixed support and used for fixing the fixed support on the window flange of the vacuum chamber;
the positioning hole plate is provided with at least one positioning through hole, and the position of the positioning through hole corresponds to the welding position and is used for inserting a welding gun head in the welding process of the welding stud so as to position and weld the welding stud;
the positioning pin is arranged on the positioning hole plate and used for placing a measuring target ball of the laser tracker.
2. The device for stud welding of the inner wall of the vacuum chamber of the tokamak device according to claim 1, wherein the positioning pin has the same outer diameter as the welding gun head, and a tapered hole is machined at one end of the positioning pin to place the laser tracker measurement target ball.
3. The device for stud welding on the inner wall of the vacuum chamber of the tokamak device according to claim 1, wherein the positioning through hole is in clearance fit with the welding gun head, and the clearance is less than 0.1mm.
4. The apparatus of claim 1 for stud welding of the inside wall of a tokamak apparatus vacuum chamber, wherein the weld stud comprises: a threaded portion and a polish rod portion connected to each other;
the diameter of the polished rod part is smaller than or equal to the outer diameter of the threaded part, a conical arc starting part is arranged on the end face of the polished rod part in a protruding mode, and an arc striking knot is machined on the arc starting part.
5. The apparatus of claim 4, wherein the flash portion has a bottom side inclined with respect to a horizontal plane, the bottom side being inclined at an angle of 5 ° to 10 ° with respect to the horizontal plane.
6. The apparatus of claim 4, wherein the outer diameter of the threaded portion is 5-14 mm; the diameter of the polished rod part is 5-12 mm; the size of the arc striking junction is
7. The apparatus of claim 4, wherein the weld stud is 316L stainless steel.
8. The apparatus of claim 1, wherein the apparatus is made of a material different from the vacuum chamber and the weld stud.
9. The apparatus of claim 8, wherein the apparatus is made of a material that is more conductive than the vacuum chamber and the weld stud or is made of an insulating material.
10. The apparatus of claim 9, wherein the vacuum chamber and the weld stud are made of Inconel625 and 316L respectively, and the apparatus is made of aluminum or copper.
11. A method for stud welding of the inner wall of a vacuum chamber of a tokamak apparatus, which is applied to the apparatus for stud welding of the inner wall of a vacuum chamber of a tokamak apparatus according to any one of claims 1 to 10, the method comprising:
preliminarily installing the device for stud welding of the inner wall of the vacuum chamber of the tokamak device as defined in any one of claims 1 to 10 at a corresponding position of the vacuum chamber, and then placing the positioning pin into the positioning through hole on the positioning hole plate;
placing a measurement target ball of a laser tracker into the positioning pin, taking an axis of a welding stud created in advance as a positioning reference, and observing the position deviation between the positioning and the axis in real time in measurement software so as to adjust the position of the device for welding the stud on the inner wall of the vacuum chamber of the Tokamak device until the requirement of the positioning precision of the welding stud is met;
when stud welding is carried out, a welding gun head is used for clamping the welding stud to be inserted into the positioning through hole for welding.
12. The method for stud welding of the inner wall of a vacuum chamber of a tokamak device of claim 11, wherein the axis of the weld stud is obtained by:
distributing enough measuring reference points in the vacuum chamber according to the mounting and positioning precision of the parts in the vacuum chamber, the measuring station position and the measuring station number of the laser tracker;
establishing measuring stations of the laser tracker inside and outside the vacuum chamber, leveling each measuring station and measuring all measuring reference points which can be seen by the measuring station;
performing space combined precision control net adjustment calculation on the measurement data of all the measurement stations;
carrying out optimal fitting on the measuring reference point after the adjustment calculation of the space combined precision control network and the measuring reference point of the measuring reference network of the tokamak device, so that the measuring reference network of the tokamak device is transferred into a vacuum chamber, and a measuring reference network of the vacuum chamber is established;
establishing a measuring station of a laser tracker near a position where welding of the welding stud is required in the vacuum chamber, leveling the laser tracker and measuring enough measuring reference points;
carrying out optimal fitting on the measured measuring reference point and the measuring reference point of the vacuum chamber measuring reference net to complete the positioning of the laser tracker under the assembly coordinate system of the Tokamak device;
and importing a welding stud CAD model into laser tracker measurement software, and adjusting the model to a theoretical welding position to obtain the axis of the welding stud.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211055460.5A CN115488476B (en) | 2022-08-31 | 2022-08-31 | Device and method for welding studs on inner wall of vacuum chamber of tokamak device |
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| CN202211055460.5A CN115488476B (en) | 2022-08-31 | 2022-08-31 | Device and method for welding studs on inner wall of vacuum chamber of tokamak device |
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