A positioning tooling and a positioning method

Abstract

The present invention discloses a positioning tooling and a positioning method. The positioning tooling includes: a first support member and a second support member which are intersectingly arranged, the bottom edge of the first support member is connected to one side edge of the second support member, and a positioning hole for positioning a flange is formed on the first support member; a support plate, the support plate is arranged on the top of the second support member, a chute is formed on the top of the support plate, and the chute extends along a first direction; a mounting seat, the mounting seat is installed in the chute, and the top of the mounting seat is used for positioning a first component to make the central axis of the straight section coincide with the central axis of the central support tube; a support seat, the support seat is installed in the chute, the support seat is located between the mounting seat and the first support member in the first direction, and the top of the support seat is used for supporting the central support tube to make the central axis of the central support tube coincide with the central axis of the flange.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning jigs, and particularly to a positioning jig and a positioning method. Background Art

[0002] The buncher is one of the important components of the accelerator. The drift tube 1 is the core component of the buncher. The specific structure of the drift tube 1 is shown in Attachments 3 and 4. It includes a flange 2, a central support tube 3, and a first component 4 connected in sequence. The first component 4 includes a circular ring portion 41, and a straight section portion 42 extends outward from the outer wall of the circular ring portion 41. The central support tube 3 is a conical tube, its large end is connected to the flange 2 in alignment, and its small end is connected to the straight section portion 42 of the first component 4 in alignment.

[0003] During operation, the beam passes through the central hole of the circular ring portion 41 of the first component 4. Deionized water is continuously passed through the drift tube 1 for cooling. The cooling water enters through the water inlet pipe at the flange 2, reaches the central support tube 3, then enters the straight section portion 42 of the first component 4, circulates once along the inner wall of the circular ring portion 41 of the first component 4, and then passes through the straight section portion 42 of the first component 4, the central support tube 3, and the flange 2, and finally discharges from the drain port of the flange 2. During the welding process of the drift tube 1, it is necessary to keep the central axis of the central support tube 3 and the central axis of the flange 2 coincident and perpendicular to the central axis of the circular ring portion 41 of the first component 4. The first end of the central support tube 3 contacts the center point of the flange 2, and a filler metal is placed at the contact position between the two for brazing; it is necessary to keep the central axis of the straight section portion 42 of the first component 4 and the central axis of the central support tube 3 coincident. The small end of the central support tube 3 contacts the straight section portion 42 of the first part, and a filler metal is placed at the contact position between the two for brazing, so as to connect the flange 2, the central support tube 3, and the first component 4 to form the drift tube 1.

[0004] The drift tube 1 has high requirements for geometric accuracy. However, since most of the materials of each component are oxygen-free copper, and the central support tube 3 is thin and long, it is extremely easy to deform during assembly, process transfer, and high-temperature brazing. However, there is no positioning jig for positioning it in the prior art. Therefore, the obtained drift tube 1 cannot meet the design requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning jig and a positioning method, which can improve the geometric accuracy of the welded drift tube and meet the design requirements after positioning the drift tube assembly for welding.

[0006] To achieve the above object, the present invention provides a positioning jig for positioning a drift tube, so that the flange, the central support tube, and the first component of the drift tube are connected in sequence. The first component includes a circular ring portion and a straight section portion connected in sequence. The positioning jig includes:

[0007] A first support member and a second support member are arranged intersectingly. The bottom edge of the first support member is connected to one side edge of the second support member. A positioning hole for positioning the flange is formed on the first support member.

[0008] A support plate is arranged on the top of the second support member. A chute is formed on the top of the support plate and extends along a first direction.

[0009] A mounting seat is mounted in the chute. The top of the mounting seat is used for positioning the first component so that the central axis of the straight section part coincides with the central axis of the central support tube.

[0010] A support base is mounted in the chute. The support base is located between the mounting seat and the first support member in the first direction. The top of the support base is used for supporting the central support tube so that the central axis of the central support tube coincides with the central axis of the flange.

[0011] Preferably, the first support member includes a vertical plate and a positioning frame. The positioning frame and the second support member are arranged intersectingly. The bottom edge of the positioning frame is connected to one side edge of the second support member. The vertical plate includes opposite first and second faces. The first face is attached to the side face of the positioning frame away from the second support member. The positioning hole is formed on the vertical plate. The positioning hole includes a coaxial positioning groove and a through hole. The notch of the positioning groove penetrates to the second face. The through hole penetrates from the bottom of the positioning groove to the first face. The diameter of the through hole is smaller than the diameter of the positioning groove.

[0012] The flange includes coaxially connected first and second discs. The diameter of the first disc is larger than the diameter of the second disc. The diameter of the positioning groove is the same as the diameter of the second disc. The numerical value of the depth of the positioning groove is the same as the numerical value of the thickness of the second disc. The positioning groove is used for positioning the second disc.

[0013] Preferably, a positioning pin is arranged on the second face of the vertical plate. The positioning pin is used for inserting into the positioning hole on the first disc.

[0014] Preferably, a mounting groove is formed on the second face of the vertical plate. The positioning tooling further includes:

[0015] A fastener is used for sequentially inserting into the fastening hole on the first disc and the mounting groove.

[0016] Preferably, an arc-shaped groove is formed on the support base. The notch of the arc-shaped groove penetrates to the top of the support base. The two ends of the arc-shaped groove in the first direction respectively penetrate the two side faces of the support base in the first direction. The arc-shaped groove is used for supporting the central support tube.

[0017] Preferably, a plurality of the support seats are provided, and the plurality of support seats are sequentially installed in the chute along the first direction.

[0018] Preferably, a plurality of first fixing holes distributed along the first direction are formed in the bottom of the chute. The support seat and the mounting seat are both slidable in the chute. The support seat and the mounting seat are both provided with second fixing holes penetrating up and down. The support seat and the mounting seat are both fixed to the chute by fixing members passing through the corresponding first fixing holes and second fixing holes.

[0019] Preferably, a locking groove is formed in the top of the mounting seat, and the positioning tooling further includes:

[0020] A pressing cover, a locking hole is formed in the pressing cover, and the pressing cover is used to cover the top of the circular ring portion;

[0021] A locking member, which is used to sequentially insert into the locking hole, the central hole of the circular ring portion and the locking groove.

[0022] Preferably, the positioning frame and the second support member are both made of square steel.

[0023] The present invention provides a positioning method for positioning a drift tube. Using the positioning tooling of any one of the above, the method includes the following steps:

[0024] Install the flange in the positioning hole of the first support member for positioning, install the central support tube on the top of the support seat, install the first component on the top of the mounting seat, and make the central axis of the central support tube, the central axis of the straight section part and the central axis of the flange coincide to complete the positioning.

[0025] Compared with the prior art, the positioning tooling and the positioning method of an embodiment of the present invention have the beneficial effects that:

[0026] The first support member and the second support member are arranged intersectingly. The bottom edge of the first support member is connected to one side edge of the second support member. A positioning hole for positioning the flange is formed on the first support member, and the flange is installed in the positioning hole for positioning.

[0027] A support plate is arranged on the top of the second support member. A support seat and a mounting seat are installed in the chute formed on the top of the support plate. The central support tube is installed on the top of the support seat, and the first component is installed on the top of the mounting seat. Make the central axis of the central support tube, the central axis of the straight section part and the central axis of the flange coincide to complete the positioning. Thus, the shape and position accuracy of the welded drift tube is relatively high and can meet the design requirements. Description of the Drawings

[0028] Figure 1It is a schematic structural diagram of the positioning tooling described in the embodiments of the present invention;

[0029] Figure 2 It is a schematic structural diagram of the drift tube installed in the positioning tooling described in the embodiments of the present invention;

[0030] Figure 3 It is a schematic structural diagram of the drift tube described in the embodiments of the present invention;

[0031] Figure 4 It is a schematic structural diagram of the drift tube described in another embodiment of the present invention;

[0032] Figure 5 It is a schematic structural diagram of the positioning tooling described in another embodiment of the present invention;

[0033] In the figure, 1. drift tube; 2. flange; 21. first disc; 211. positioning hole; 212. fastening hole; 22. second disc; 3. central support tube; 4. first component; 411. circular ring part; 4111. central hole; 42. straight section part; 5. first support member; 51. positioning frame; 6. second support member; 7. vertical plate; 71. clamping hole; 711. clamping groove; 712. through hole; 72. first surface; 73. second surface; 74. positioning pin; 75. mounting groove; 8. support plate; 81. sliding groove; 811. first fixing hole; 9. mounting seat; 91. locking groove; 10. support seat; 101. arc-shaped groove; 11. fastener; 12. second fixing hole; 13. fixing member; 14. pressing cover; 1411. locking hole; 15. locking member; 16. support column; 17. support square steel; 18. bottom plate. Detailed implementation manners

[0034] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0035] In the description of the present invention, it should be understood that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0036] In the description of the present invention, it should be understood that the terms "first", "second", and "third" used in the present invention are only for descriptive purposes and cannot be construed as indicating or implying relative importance. Additionally, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", "X-axis direction", "Y-axis direction", "Z-axis direction", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention. Moreover, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0037] As Figures 1-5 shown, a positioning tooling of an embodiment of the present invention is used to position the drift tube 1, so that the flange 2, the central support tube 3, and the first component 4 of the drift tube 1 are connected in sequence. The first component 4 includes a circular ring portion 41 and a straight section portion 42 connected in sequence. The positioning tooling includes: a first support member 5 and a second support member 6 arranged intersectingly, a support plate 8, a support seat 10, and a mounting seat 9;

[0038] The bottom edge of the first support member 5 is connected to one side edge of the second support member 6, and a positioning hole 71 for positioning the flange 2 is provided on the first support member 5;

[0039] The support plate 8 is arranged on the top of the second support member 6, and a sliding groove 81 is provided on the top of the support plate 8, and the sliding groove 81 extends along the first direction X;

[0040] The mounting seat 9 is installed in the sliding groove 81, and the top of the mounting seat 9 is used to position the first component 4, so that the central axis of the straight section portion 42 coincides with the central axis of the central support tube 3;

[0041] The support seat 10 is installed in the sliding groove 81, the support seat 10 is located between the mounting seat 9 and the first support member 5 in the first direction X, and the top of the support seat 10 is used to support the central support tube 3, so that the central axis of the central support tube 3 coincides with the central axis of the flange 2.

[0042] It should be noted that the first support member 5 and the second support member 6 are arranged intersectingly, the bottom edge of the first support member 5 is connected to one side edge of the second support member 6, and a positioning hole 71 for positioning the flange is provided on the first support member 5, and the flange 2 is installed in the positioning hole 71 for positioning.

[0043] A support plate 8 is provided on the top of the second support member 6. A support seat 10 and a mounting seat 9 are installed in a chute 81 opened on the top of the support plate 8. The central support tube 3 is installed on the top of the support seat 10, and the first component 4 is installed on the top of the mounting seat 9, so that the central axes of the central support tube 3, the straight section 42, and the flange 2 coincide, completing the positioning. Thus, the shape and position accuracy of the welded drift tube is relatively high and can meet the design requirements.

[0044] The central support tube 3 is a slender oxygen-free copper tapered tube. When the shape of the central support tube 3 changes, the shape and height of the support seat 10 can be further adjusted so that the central axis of the central support tube 3 supported by the support seat 10 coincides with the central axis of the flange 2.

[0045] As Figures 1-5 shown, in a more specific embodiment, the first support member 5 includes a vertical plate 7 and a positioning frame 51. The positioning frame 51 intersects with the second support member 6. The bottom edge of the positioning frame 51 is connected to one side edge of the second support member 6. The vertical plate 7 includes opposite first surface 72 and second surface 73. The first surface 72 is attached to the side surface of the positioning frame 51 away from the second support member 6. A positioning hole 71 is opened on the vertical plate 7. The positioning hole 71 includes a coaxial positioning groove 711 and a through hole 712. The notch of the positioning groove 711 penetrates to the second surface 73. The through hole 712 penetrates from the bottom of the positioning groove 711 to the first surface 72. The diameter of the through hole 712 is smaller than the diameter of the positioning groove 711;

[0046] The flange 2 includes a first disk 21 and a second disk 22 connected coaxially. The diameter of the first disk 21 is larger than the diameter of the second disk 22. The diameter of the positioning groove 711 is the same as the diameter of the second disk 22. The depth value of the positioning groove 711 is the same as the thickness value of the second disk 22. The positioning groove 711 is used to position the second disk 22.

[0047] It should be noted that, generally, the positioning frame 51 and the second support member 6 are perpendicular to each other, so that the vertical plate 7 attached to the positioning frame 51 and the second support member 6 are perpendicular to each other. The positioning holes 71 are vertically opened on the vertical plate 7. The flange 2 is installed and positioned in the positioning holes 71. The flange 2 and the second support member 6 are perpendicular to each other, and the central axis of the flange 2 is parallel to the second support member 6. Thus, the second support member 6 is placed on a horizontal plane. The height and shape of the support seat 10 are adapted to the corresponding position of the central support pipe 3 to be supported. The central support pipe 3 is installed on the support seat 10 to ensure that the central axis of the central support pipe 3 is on a horizontal line and the central axis of the central support pipe 3 coincides with the central axis of the flange 2. The height of the mounting seat 9 is adapted to the height of the support seat 10. The first component 4 is installed on the mounting seat 9 to ensure that the central axis of the straight section 42 of the first component 4 coincides with the central axis of the central support pipe 3. The mounting seat 9 is horizontal, and thus the first component 4 installed on the mounting seat 9 is also horizontal.

[0048] As Figure 1 shown, in a more specific embodiment, the second support member 6 includes a base (not shown in the figure) and a support column 16. One side of the base is connected to the bottom edge of the positioning frame 51, and the support column 16 is installed on the top of the base. The support plate 8 is arranged on the top of the support column 16.

[0049] The positioning hole 71 includes a coaxial positioning groove 711 and a through hole 712. The notch of the positioning groove 711 penetrates to the second surface 73, and the through hole 712 penetrates from the bottom of the positioning groove 711 to the first surface 72. The diameter of the through hole 712 is smaller than the diameter of the positioning groove 711, so that a stepped surface is formed at the connection of the positioning groove 711 and the through hole 712. Since the diameters of the positioning groove 711 and the second disc 22 are the same, and the depth value of the positioning groove 711 is the same as the thickness value of the second disc 22, the second disc 22 can be snapped into the positioning groove 711 to achieve positioning, ensuring the stability of the positioning of the flange 2 and ensuring that the flange 2 is parallel to the vertical plate 7.

[0050] As Figure 1 、 3 shown, in a more specific embodiment, a positioning pin 74 is provided on the second surface 73 of the vertical plate 7. The positioning pin 74 is used for inserting into the positioning hole 211 on the first disc 21.

[0051] It should be noted that the positioning pin 74 is installed on the second surface 73 of the vertical plate 7, and the positioning hole 211 is opened on the first disc 21 of the flange 2. Thus, the positioning hole 211 on the first disc 21 of the flange 2 is aligned with the corresponding positioning pin 74 on the second surface 73 of the vertical plate 7, so that the positioning pin 74 is inserted into the positioning hole 211. Thus, the second disc 22 of the flange 2 can also be snapped into the positioning groove 711 more smoothly and fittingly.

[0052] AsFigure 1 , 3 As shown in 3 , in a more specific embodiment, an installation groove 75 is formed on the second surface 73 of the vertical plate 7. The positioning tooling further includes:

[0053] A fastener 11, which is used to be inserted into the fastening hole 212 on the first disc 21 and the installation groove 75 in sequence.

[0054] It should be noted that the fastening hole 212 on the first disc 21 of the flange 2 is aligned with the corresponding installation groove 75 on the second surface 73 of the vertical plate 7, and the fastener 11 is inserted into the fastening hole 212 and the installation groove 75 in sequence, so as to tightly fix the flange 2 and the vertical plate 7, ensuring the stability of the positioning of the flange 2.

[0055] As Figure 1 shown, in a more specific embodiment, an arc groove 101 is formed on the support base 10. The notch of the arc groove 101 penetrates through the top of the support base 10, and both ends of the arc groove 101 in the first direction X penetrate through the two side surfaces of the support base 10 in the first direction X. The arc groove 101 is used to support the central support tube 3.

[0056] It should be noted that an arc groove 101 penetrating through the top is formed on the support base 10, and both ends of the arc groove 101 in the first direction X penetrate through the two end faces of the support base 10 in the first direction X. Since the central support tube 3 is a tapered tube, the arc groove 101 can support the central support tube 3 more closely, ensuring the stability of the position of the central support tube 3.

[0057] Since there may be errors in the shape of the arc groove 101, in order to ensure that the arc groove 101 closely fits the central support tube 3, the relative position between the central support tube 3 and the support base 10 can be adjusted (that is, the position of the support base 10 in the sliding groove 81 is adjusted).

[0058] As Figure 1 shown, in a more specific embodiment, there are a plurality of support bases 10, and the plurality of support bases 10 are sequentially installed in the sliding groove 81 along the first direction X.

[0059] It should be noted that the plurality of support bases 10 are sequentially installed in the sliding groove 81 along the first direction X. The heights and shapes of the plurality of support bases 10 are adapted to the corresponding parts of the central support tube 3. The central support tube 3 is supported by the plurality of support bases 10, which can better support the central support tube 3 to reduce its deformation amount during brazing.

[0060] As Figure 1 , 5As shown, in a more specific embodiment, a plurality of first fixing holes 811 distributed along the first direction X are formed at the bottom of the sliding groove 81. The support base 10 and the mounting base 9 are both slidable within the sliding groove 81. The support base 10 and the mounting base 9 are both provided with second fixing holes 12 penetrating up and down. The support base 10 and the mounting base 9 are both fixed to the sliding groove 81 through fixing members 13 passing through the corresponding first fixing holes 811 and second fixing holes 12.

[0061] It should be noted that the support base 10 and the mounting base 9 can slide within the sliding groove 81 to adjust their positions, achieving fine-tuning of the positions. Place the central support tube 3 on the support surface of the support base 10, and adjust the positions of the support base 10 and the mounting base 9 until the central axis of the central support tube 3, the central axis of the straight section 42 of the first component 4, and the central axis of the flange 2 coincide. At the same time, the central axis of the circular ring portion 41 of the first component is perpendicular to the central axis of the central support tube 3. Then, pass the fixing member 13 through the corresponding second fixing hole 12 and a certain first fixing hole 811 on the sliding groove 81 to achieve fixation, and fix the support base 10 and the mounting base 9 on the support plate 8.

[0062] After the three components of the drift tube 1 are assembled and safely positioned and fixed to the tooling, the whole is placed in a vacuum brazing furnace for welding.

[0063] As Figure 2 shown, in a more specific embodiment, a locking groove 91 is formed at the top of the mounting base 9. The positioning tooling further includes: a pressing cover 14 and a locking member 15;

[0064] A locking hole 1411 is formed on the pressing cover 14, and the pressing cover 14 is used to cover the top of the circular ring portion 41;

[0065] The locking member 15 is used to be inserted into the locking hole 1411, the central hole 411 of the circular ring portion 41, and the locking groove 91 in sequence.

[0066] It should be noted that the locking hole 1411, the central hole 411 of the circular ring portion 41, and the locking groove 91 are coaxial. Cover the pressing cover 14 on the top of the circular ring portion 41, and insert the locking member 15 into the locking hole 1411, the central hole 411 of the circular ring portion 41, and the locking groove 91 in sequence, so as to fix the positions among the pressing cover 14, the first component 4, and the mounting base 9, and prevent the first component 4 from detaching from the mounting base 9.

[0067] The locking member 15 is preferably a locking bolt, which includes a screw and a nut. The screw is inserted into the locking hole 1411, the central hole 411 of the circular ring portion 41, and the locking groove 91 in sequence, and the nut is sleeved on the screw and abuts against the top of the pressing cover 14.

[0068] As Figure 1 shown, in a more specific embodiment, the positioning frame 51 and the second support member 6 are both made of square steel.

[0069] It should be noted that the positioning frame 51 and the second support member 6 are both made of square steel, and the square steel has good rigidity and strength.

[0070] As Figure 1 shown, the positioning frame 51 is a rectangular frame composed of 4 square steels. The base of the second support member 6 also includes a rectangular frame composed of 4 square steels, and 1 of the square steels is shared with the positioning frame 51. Support square steels 17 are arranged at intervals along the first direction X and extend along the second direction Y on the base. A bottom plate 18 is also provided at the bottom of the support square steels 17, where the second direction Y and the first direction X are perpendicular to each other, and the support column 16 is installed on the top of the support square steels 17.

[0071] As Figures 1-5 shown, a positioning method according to an embodiment of the present invention is used to position the drift tube 1, and the positioning tooling of any one of the above is adopted, including the following steps:

[0072] Install the flange 2 in the positioning hole 71 of the first support member 5 for positioning, install the central support tube 3 on the top of the support seat 10, and install the first component 4 on the top of the mounting seat 9, so that the central axes of the central support tube 3, the straight section 42 of the first component 4, and the flange 2 coincide to complete the positioning.

[0073] It should be noted that place the central support tube 3 on the support surface of the support seat 10, and place the end face of the circular ring part 41 of the first component to fall on the upper plane of the mounting seat 9. Adjust the positions of the support seat 10 and the mounting seat 9 until the central axes of the central support tube 3, the straight section 42 of the first component 4, and the flange 2 coincide. At the same time, the central axis of the circular ring part 41 of the first component is perpendicular to the central axis of the central support tube 3. Then fix the support seat 10 and the mounting seat 9 on the support plate 8 to complete the positioning.

[0074] It should be noted that before brazing the components (flange 2, central support tube 3, and first component 4) of the drift tube 1 in this application, it is necessary to first trial-assemble the components of the drift tube 1 on the positioning tooling. After checking that all the dimensions and precisions of the components are correct, disassemble the components of the drift tube 1 in the reverse order of installation and then install them formally. After the formal installation, check that all the dimensions and precisions of the components are correct again, and then place brazing filler metal at the contact positions between the flange 2 and the central support tube 3 and between the central support tube 3 and the first component 4, and enter the brazing furnace for welding.

[0075] The processing process of the positioning tooling of this application is as follows: After the components of the positioning frame 51 and the second support member 6 are welded together, they are annealed to remove welding stress, and then the positioning holes 71, positioning pins 74, mounting grooves 75, etc. of the vertical plate 7 are processed. The positioning holes 71 of the vertical plate 7 are vertically opened on the vertical plate 7. The bottom plate 18 of the second support member 6 is processed, etc. It is processed in one clamping to ensure that the vertical plate 7 and the bottom plate 18 of the second support member 6 are perpendicular. At the same time, the chute 81 and the first fixing hole 811 of the support plate 8 are processed.

[0076] Before positioning the components of the drift tube 1, it is necessary to recheck the perpendicularity of the vertical plate 7 and the bottom plate 18 of the second support member 6.

[0077] In a more specific embodiment, the flange 2 is installed and positioned in the positioning hole 71 of the vertical plate 7. Specifically: The second disc 22 of the flange 2 is snapped into the positioning groove 711, the positioning hole 211 on the first disc 21 of the flange 2 is aligned with the positioning pin 74 on the second surface 73 of the vertical plate 7, the positioning pin 74 is inserted into the positioning hole 211, the fastening hole 212 on the first disc 21 of the flange 2 is aligned with the mounting groove 75 on the second surface 73 of the vertical plate 7, and the fasteners 11 are sequentially inserted into the fastening hole 212 on the first disc 21 of the flange 2 and the mounting groove 75 on the second surface 73 of the vertical plate 7, thereby installing and positioning the flange 2 in the positioning hole 71 of the vertical plate 7.

[0078] In a more specific embodiment, the central support tube 3 is installed on the top of the support seat 10. Specifically: The central support tube 3 is snapped into the arc-shaped groove 101 of the support seat 10 for installation.

[0079] In a more specific embodiment, the first component 4 is installed on the top of the mounting seat 9. Specifically: The ring part 41 of the first component 4 is placed on the top of the mounting seat 9, the pressing cover 14 is covered on the top of the ring part 41, and the locking member 15 is sequentially inserted into the locking hole 1411, the central hole 411 of the ring part 41 of the first component 4, and the locking groove 91, thereby installing the first component 4 on the upper plane of the mounting seat 9.

[0080] The working process of the present invention is as follows: The flange 2 is installed and positioned in the positioning hole 71 of the first support member 5, the central support tube 3 is installed on the top of the support seat 10, the first component 4 is installed on the top of the mounting seat 9, so that the central axes of the central support tube 3, the straight section part 42, and the flange 2 coincide to complete the positioning.

[0081] In summary, the embodiment of the present invention provides a positioning tooling and a positioning method. After positioning the drift tube components and then welding, it can improve the geometric accuracy of the welded drift tube and meet the design requirements.

[0082] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A positioning tool for positioning a drift tube, so that the flange, the central support tube and the first component of the drift tube are connected in sequence, the first component includes a circular ring part and a straight section part connected in sequence, characterized in that: The positioning tooling includes: A first support member and a second support member are arranged to intersect each other, a bottom edge of the first support member is connected to a side edge of the second support member, and a positioning hole for positioning the flange is provided on the first support member; A support plate, the support plate is arranged on the top of the second support member, a slide groove is provided on the top of the support plate, and the slide groove extends along the first direction; A mounting seat, the mounting seat is mounted in the slide groove, the top of the mounting seat is used to position the first component so that the central axis of the straight section coincides with the central axis of the central support tube, and a locking groove is provided on the top of the mounting seat; A support seat, the support seat is installed in the slide groove, the support seat is located between the mounting seat and the first support member in a first direction, and the top of the support seat is used to support the central support tube so that the central axis of the central support tube coincides with the central axis of the flange; A compression cover, wherein a locking hole is provided on the compression cover and the compression cover is used to cover the top of the circular ring portion; A locking piece is used to be inserted into the locking hole, the center hole of the annular part and the locking groove in sequence.

2. The positioning tool according to claim 1, characterized in that: The first support member includes a vertical plate and a positioning frame, the positioning frame and the second support member are arranged to intersect, the bottom edge of the positioning frame is connected to a side edge of the second support member, the vertical plate includes a first surface and a second surface opposite to each other, the first surface is attached to the side of the positioning frame away from the second support member, the vertical plate is provided with the positioning hole, the positioning hole includes a coaxial positioning groove and a through hole, the notch of the positioning groove penetrates to the second surface, the through hole penetrates from the bottom of the positioning groove to the first surface, and the diameter of the through hole is smaller than the diameter of the positioning groove; The flange includes a first disc and a second disc coaxially connected, the diameter of the first disc is larger than the diameter of the second disc, the diameter of the positioning groove is the same as the diameter of the second disc, the depth value of the positioning groove is the same as the thickness value of the second disc, and the positioning groove is used to position the second disc.

3. The positioning tool according to claim 2, characterized in that: A positioning pin is provided on the second surface of the vertical plate, and the positioning pin is used to be plugged into the positioning hole on the first disc.

4. The positioning tool according to claim 3, characterized in that: A mounting groove is provided on the second surface of the vertical plate, and the positioning tool further comprises: A fastener is used to be inserted into the fastening hole on the first disk and the mounting groove in sequence.

5. The positioning tool according to claim 1, characterized in that: An arc-shaped groove is provided on the support seat, the notch of the arc-shaped groove passes through the top of the support seat, and the two ends of the arc-shaped groove in the first direction respectively pass through the two side surfaces of the support seat in the first direction, and the arc-shaped groove is used to support the central support tube.

6. The positioning tool according to claim 5, characterized in that: There are multiple support seats, and the multiple support seats are installed in the slide groove in sequence along the first direction.

7. The positioning tool according to claim 1, characterized in that: A plurality of first fixing holes distributed along a first direction are provided at the bottom of the slide groove, and both the support seat and the mounting seat can slide in the slide groove. Both the support seat and the mounting seat are provided with second fixing holes penetrating from top to bottom, and both the support seat and the mounting seat are fixed to the slide groove by fixing parts passing through the corresponding first fixing holes and the second fixing holes.

8. The positioning tool according to claim 2, characterized in that: The positioning frame and the second support member are both made of square steel.

9. A positioning method for positioning a drift tube, using a positioning tool as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Install the flange in the positioning hole of the first support member, install the center support tube on the top of the support seat, install the first component on the top of the mounting seat, make the central axis of the center support tube, the central axis of the straight section and the central axis of the flange coincide, and complete the positioning.

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