Fixing tool for welding high-precision vacuum chamber modular assembly

Abstract

The invention relates to the technical field of vacuum chamber welding auxiliary equipment, in particular to a high-precision vacuum chamber modular assembly welding fixing tool which comprises a module assembly, an inner supporting frame is arranged in the module assembly, an outer fixing frame is arranged outside the module assembly, and a moving assembly is arranged below the outer fixing frame. The moving assembly and the outer fixing frame are connected through a welding seam adjusting assembly. According to the invention, the inner support frame is arranged, so that the module assembly is prevented from deforming inwards; by arranging the outer fixing frame, outward deformation of the module assembly is avoided; by arranging the moving assembly and the welding seam adjusting assembly, the outer fixing frame is clamped through a clamping plate, connection of the outer fixing frame and the moving assembly is achieved, a first sliding table can be driven to move along an arc-shaped sliding rail through work of a first motor and rotation of an output wheel, and rapid alignment of the two module assemblies is achieved; the servo oil cylinder is used for driving the second sliding table to move horizontally, the distance between the two module assemblies is adjusted, and welding seam adjustment of the module assemblies is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum chamber welding auxiliary equipment, in particular to a fixing tool for welding high-precision vacuum chamber modular components. Background Art

[0002] Nuclear fusion generally refers to a nuclear reaction in which deuterium or tritium nuclei fuse together under certain conditions to generate new heavier nuclei, accompanied by the release of huge amounts of energy. Nuclear fusion requires huge pressure or extremely high temperatures. In the prior art, the most feasible controlled nuclear fusion reaction device is the Tokamak device.

[0003] The main body of the Tokamak device is a vacuum chamber. In order to save processing time and reduce the difficulty of processing and transportation, modular assembly is usually adopted. First, the vacuum chamber is divided into several sectors of the same size. Each sector is usually composed of a straight segment, a large arc segment, and a small arc segment. First, the sector segments need to be welded into shape, and then the small sector segments are welded into larger sector segments, and then transported to the site for assembly.

[0004] In the process of modular component welding, the position alignment and calibration between the two sectors is the most time-consuming. The position alignment accuracy between the two components will affect the subsequent welding accuracy. After alignment, the distance between the two modules needs to be adjusted to ensure the reserved weld distance is accurate. Special fixed tooling is required. Summary of the invention

[0005] In order to make up for the above deficiencies, the present invention provides a fixing tool for welding high-precision vacuum chamber modular components.

[0006] The technical solution of the present invention is: A fixing tool for welding high-precision vacuum chamber modular components, comprising: A module assembly, wherein an inner support frame is provided inside the module assembly, an outer fixing frame is provided outside the module assembly, a moving assembly is provided below the outer fixing frame, and the moving assembly and the outer fixing frame are connected via a weld adjustment assembly; The inner support frame includes a plurality of center frames, the outer side of the center frame is connected with a support plate through an adjustment component, the top surface of the support plate is provided with a friction pad, the adjustment component is used to adjust the distance from the support plate to the inner wall of the module assembly, and the center frame supports the module assembly through the support plate; An external fixing frame, the external fixing frame comprising a front fixing frame and a rear fixing frame, the inner side of the front fixing frame is provided with a support plate, the inner side of the rear fixing frame is provided with an extrusion plate, the support plate and the extrusion plate are used to extrude the module assembly inwards, and cooperate with the inner support frame to clamp the module assembly; The moving assembly includes a bottom plate, the top surface of which is slidably connected to two first slides via an arc-shaped slide rail, the center of the bottom plate and the arc-shaped slide rail is located on the same straight line as the center of the module assembly, each of the first slides is connected to the bottom plate via a driving assembly, and the driving assembly is used to drive the first slide to move along the arc-shaped slide rail; The weld adjustment assembly includes a mounting table, the top surface of which is fixedly connected to an external fixing frame via a clamping plate, the axis of which is parallel to the opposite sides of two first slides, a second slide is fixedly installed below the mounting table, the second slide is connected to a horizontal moving device, and the horizontal moving device is used to drive the second slide to move horizontally along the top surface of the first slide.

[0007] Preferably, the adjustment assembly includes a fixing screw, the tail end of the fixing screw is fixedly connected to the outer side surface of the center frame, the head of the fixing screw is connected to the supporting screw via an adjusting threaded sleeve, and the head of the supporting screw is fixedly connected to the supporting plate.

[0008] Preferably, the adjusting threaded sleeve is threadedly connected to both the fixing screw and the supporting screw, and the threads on the fixing screw and the supporting screw are in opposite directions.

[0009] Preferably, a connecting plate is provided in the middle of the front fixing frame, a supporting frame is provided on a side of the connecting plate close to the module assembly, and the supporting plate is fixedly mounted on the top surface of the supporting frame.

[0010] Preferably, an extrusion screw is threadedly connected to the rear fixing frame, the axis of the extrusion screw faces the module assembly, the extrusion screw passes through the rear fixing frame and is connected to a ball head bracket, and the ball head bracket is rotatably connected to the extrusion plate.

[0011] Preferably, a first slide groove is provided on the bottom surface of the first slide, the first slide groove is adapted to the arc-shaped slide rail, the left and right side surfaces of the first slide form a certain angle, and the intersection of the extension lines of the two side surfaces of the first slide is located at the center of the arc-shaped slide rail.

[0012] Preferably, the driving assembly includes a first motor, which is fixedly mounted on the lower edge of the first slide toward the center of the circle through a mounting frame, and the output shaft of the first motor passes through the mounting frame and is fixedly connected to an output wheel, and the side surface of the output wheel abuts against the inner side surface of the base plate.

[0013] Preferably, a roller bracket is provided on the side of the first slide away from the center of the circle, a clamping roller is rotatably installed below the roller bracket, and the clamping roller abuts against the outer side surface of the bottom plate.

[0014] Preferably, the horizontal moving device includes two linear guides, which are fixedly mounted on the top surface of the first slide, and are perpendicular to the opposite sides of the two first slides. The bottom surface of the second slide is provided with a second slide groove, and the second slide groove is adapted to the linear guides.

[0015] Preferably, a servo oil cylinder is provided between the linear guide rails, a mounting groove is provided through one side of the second slide, and the piston rod of the servo oil cylinder is inserted into the mounting groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, by setting an inner support frame, adjusting the distance between the support screw and the fixed screw by rotating the adjusting threaded sleeve, thereby adjusting the distance between the support plate and the friction gasket and the inner wall of the module assembly, transmitting the pressure on the module assembly to the center frame, and preventing the module assembly from deforming inward; 2. By setting up an external fixing frame, the distance between the extrusion plate and the outer wall of the module assembly can be adjusted by rotating the extrusion screw. The extrusion plate is separated from the module assembly, and the module assembly can be moved, which is convenient for adjusting the position of the module assembly in the external fixing assembly. The module assembly is clamped by the support plate and the extrusion plate, thereby preventing the module assembly from deforming outward; 3. By setting a moving assembly and a weld adjustment assembly, the clamping plate is used to clamp the external fixer to achieve the connection between the external fixer and the moving assembly. By the operation of the first motor, the output wheel is driven to rotate, and the first slide can be driven to move along the arc slide rail to achieve rapid alignment of the two module assemblies; 4. The servo cylinder is used to drive the second slide to move horizontally, so that the distance between the two second slides can be adjusted, thereby adjusting the spacing of the external fixing frame through the mounting table, and then adjusting the spacing of the two module assemblies to achieve weld adjustment of the module assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the module assembly structure in the present invention; Figure 3 It is a schematic diagram of the structure of the inner support frame in the present invention; Figure 4 This is a second schematic diagram of the inner support frame structure in the present invention; Figure 5 It is a schematic diagram of the structure of the external fixator of the present invention; Figure 6 for Figure 5 A schematic diagram of the structure enlargement in the middle; Figure 7 It is a schematic diagram of the structure of the mobile component in the present invention; Figure 8It is a schematic diagram of the explosion of the moving component and the weld adjustment component structure in the present invention.

[0018] The meanings of the punctuation marks in the figure are: 1. Module assembly; 11. Large arc segment; 12. Small arc segment; 13. Straight line segment; 2. Inner support frame; 21. Center frame; 22. Connecting beam; 23. Fixing screw; 24. Supporting screw; 25. Adjusting threaded sleeve; 26. Support plate; 27. Friction pad; 3. External fixing frame; 31. Front fixing frame; 32. Rear fixing frame; 33. Connecting plate; 34. Support plate; 35. Support frame; 36. Extrusion plate; 37. Ball head bracket; 38. Extrusion screw; 39. Adjustment head; 4. Moving assembly; 41. Bottom plate; 42. Arc slide rail; 43. First slide platform; 44. First slide slot; 45. Mounting frame; 46. First motor; 47. Output wheel; 48. Roller bracket; 49. Clamping roller; 5. Welding seam adjustment assembly; 51. Linear guide rail; 52. Second slide; 53. Second slide groove; 54. Mounting groove; 55. Servo cylinder; 56. Mounting table; 57. Clamping plate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, 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" 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 invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0021] The present invention describes the above technical solution in detail through the following embodiments: Embodiment 1: See attached Figure 1-8 , a fixing tool for welding high-precision vacuum chamber modular components, comprising: A module component 1 is provided with an inner support frame 2 inside the module component 1, an outer fixing frame 3 is provided outside the module component 1, a moving component 4 is provided below the outer fixing frame 3, and the moving component 4 and the outer fixing frame 3 are connected by a weld adjustment component 5.

[0022] The module assembly 1 is made of a large arc segment 11, two small arc segments 12 and a straight segment 13, and the four components are welded together.

[0023] The inner support frame 2 includes several center frames 21. The outer side of the center frame 21 is connected to a support plate 26 through an adjustment component. A friction pad 27 is provided on the top surface of the support plate 26. The adjustment component is used to adjust the distance from the support plate 26 to the inner wall of the module component 1. The center frame 21 supports the module component 1 through the support plate 26.

[0024] The friction pad 27 can be made of elastic materials such as rubber, which can adapt to the change of the curvature of the inner wall of the module assembly 1. The friction pad 27 is attached to the support plate 26 by an adhesive. The support plate 26 is made of metal material.

[0025] A connecting beam 22 is fixedly installed between the center frames 21 by bolts.

[0026] The adjusting assembly includes a fixing screw 23 , the tail end of which is welded to the outer side of the center frame 21 , the head of the fixing screw 23 is connected to the supporting screw 24 through an adjusting threaded sleeve 25 , and the head of the supporting screw 24 is welded to the supporting plate 26 .

[0027] The axes of the fixing screw 23 , the adjusting threaded sleeve 25 and the supporting screw 24 face the center of the center frame 21 .

[0028] The pressure and inward deformation stress borne by the module assembly 1 can be transmitted to the friction pad 27 and the support plate 26. The pressure borne by the support plate 26 can be transmitted to the adjusting threaded sleeve 25 through the support screw 24, and then the adjusting threaded sleeve 25 is transmitted to the fixing screw 23, and finally transmitted to the center frame 21 through the fixing screw 23.

[0029] The adjusting threaded sleeve 25 is threadedly connected to the fixing screw 23 and the supporting screw 24 at the same time, and the threads on the fixing screw 23 and the supporting screw 24 are in opposite directions.

[0030] Therefore, when the adjusting threaded sleeve 25 is rotated, the fixing screw 23 and the supporting screw 24 can be driven to move along the axis of the adjusting threaded sleeve 25, thereby controlling the distance between the end faces of the fixing screw 23 and the supporting screw 24, and further controlling the distance and pressure between the support plate 26 and the inner wall of the module assembly 1.

[0031] The external fixing frame 3 includes a front fixing frame 31 and a rear fixing frame 32. A support plate 34 is provided on the inner side of the front fixing frame 31, and an extrusion plate 36 is provided on the inner side of the rear fixing frame 32. The support plate 34 and the extrusion plate 36 are used to extrude the module assembly 1 inwards and cooperate with the inner support frame 2 to clamp the module assembly 1.

[0032] The front fixing frame 31 and the rear fixing frame 32 are fixedly connected by bolts. The supporting plate 34 abuts against the outer side surface of the straight section 13 , and the extrusion plate 36 abuts against the outer side surfaces of the large arc section 11 and the small arc section 12 .

[0033] A connecting plate 33 is welded to the middle of the front fixing frame 31 , a supporting frame 35 is welded to the side of the connecting plate 33 close to the module assembly 1 , and a supporting plate 34 is fixedly mounted on the top surface of the supporting frame 35 by bolts.

[0034] The position of the support plate 34 cannot be adjusted. The pressure on the support plate 34 can be transmitted to the connecting plate 33 through the support frame 35, and then transmitted to the front fixing frame 31 and the rear fixing frame 32. An extrusion screw 38 is threadedly connected to the rear fixing frame 32 , and the axis of the extrusion screw 38 faces the module assembly 1 . The extrusion screw 38 passes through the rear fixing frame 32 and is welded with a ball head bracket 37 , which is rotatably connected to the extrusion plate 36 .

[0035] An adjustment head 39 is welded to the top of the extrusion screw 38, and the extrusion screw 38 can be driven to rotate by rotating the adjustment head 39. Since the extrusion screw 38 is threadedly connected to the rear fixing frame 32, the extrusion screw 38 can move along the axial direction, and the ball head bracket 37 is rotatably connected to the extrusion plate 36, so the extrusion plate 36 will not rotate, but will move along the axial direction of the extrusion screw 38, thereby adjusting the distance between the extrusion plate 36 and the outer side of the module assembly 1.

[0036] When the extrusion plate 36 is separated from the module assembly 1 , the module assembly 1 can be moved, so that the position of the module assembly 1 in the external fixing frame 3 can be adjusted conveniently.

[0037] When the extrusion plate 36 abuts against the module assembly 1, the supporting plate 34 can clamp the module assembly 1 to fix the module assembly 1. At the same time, since the supporting plate 34 is immovable, the module assembly 1 can be clamped conveniently.

[0038] At the same time, the stress of the module assembly 1 deforming outward can be transmitted to the support plate 34 and the extrusion plate 36 , and then transmitted to the front fixing frame 31 and the rear fixing frame 32 .

[0039] The moving component 4 includes a base plate 41, and the top surface of the base plate 41 is slidably connected to two first slides 43 through an arc-shaped slide rail 42. The center of the base plate 41 and the arc-shaped slide rail 42 is located on the same straight line as the center of the module component 1. Each first slide 43 is connected to the base plate 41 through a driving component, and the driving component is used to drive the first slide 43 to move along the arc-shaped slide rail 42.

[0040] The arc-shaped slide rail 42 is fixedly mounted on the top surface of the bottom plate 41 by means of bolts.

[0041] Since the centers of the bottom plate 41 and the arcuate slide rail 42 are on the same straight line as the center of the module assembly 1 , the first slide 43 rotates around the axis of the module assembly 1 , the bottom plate 41 and the arcuate slide rail 42 when moving along the arcuate slide rail 42 .

[0042] A first slide groove 44 is provided on the bottom surface of the first slide 43 , and the first slide groove 44 is adapted to the arc-shaped slide rail 42 . The left and right side surfaces of the first slide 43 form a certain angle, and the intersection of the extended lines of the two side surfaces of the first slide 43 is located at the center of the arc-shaped slide rail 42 .

[0043] The first slide groove 44 is slidably engaged with the arc-shaped slide rail 42 to prevent the first slide platform 43 from tipping over.

[0044] Since the intersection of the extension lines of the two side surfaces of the first slide 43 is located at the center of the arc-shaped slide rail 42, when the two first slides 43 are in contact, the side surfaces of the two first slides 43 can completely abut against each other.

[0045] The driving assembly includes a first motor 46, which is fixedly mounted on the lower edge of the first slide 43 toward the center of the circle through a mounting frame 45. The output shaft of the first motor 46 passes through the mounting frame 45 and is fixedly connected to an output wheel 47, and the side surface of the output wheel 47 abuts against the inner side surface of the bottom plate 41.

[0046] The first motor 46 is a servo motor. The output wheel 47 can be driven to rotate by the operation of the first motor 46. Since the output wheel 47 abuts against the inner side of the bottom plate 41, the rotation of the output wheel 47 can drive the first slide 43 to move. By controlling the rotation angle and number of turns of the output shaft of the first motor 46, the number of turns and angle of the output wheel 47 can be controlled, and then the moving distance of the first slide 43 can be controlled.

[0047] A roller bracket 48 is welded to one side of the first slide 43 away from the center of the circle, and a clamping roller 49 is rotatably mounted below the roller bracket 48 , and the clamping roller 49 abuts against the outer side surface of the bottom plate 41 .

[0048] When the first slide 43 moves, the clamping roller 49 can roll along the outer side of the bottom plate 41 and cooperate with the output wheel 47 to clamp the bottom plate 41, thereby ensuring the stability of the movement of the first slide 43.

[0049] The weld adjustment assembly 5 includes a mounting platform 56, the top surface of which is fixedly connected to the external fixing frame 3 via a clamping plate 57, the axis of the mounting platform 56 is parallel to the opposite sides of the two first slides 43, a second slide 52 is fixedly installed below the mounting platform 56, and the second slide 52 is connected to a horizontal moving device, which is used to drive the second slide 52 to move horizontally along the top surface of the first slide 43.

[0050] The clamping plate 57 is fixedly connected to the front fixing frame 31 and the rear fixing frame 32 by bolts, providing support for the external fixing frame 3, thereby fixing and supporting the module assembly 1.

[0051] It should be noted that when adjusting the position of the module assembly 1 , it should be ensured that the opposite side of the module assembly 1 is flush with the opposite side of the first slide 43 .

[0052] The mounting platform 56 and the second slide 52 are fixedly connected by bolts. When the second slide 52 moves, it can drive the mounting platform 56 to move, thereby driving the external fixing frame 3 to move through the clamping plate 57, and further driving the module assembly 1 to move.

[0053] The horizontal moving device includes two linear guide rails 51, which are fixed on the top surface of the first slide 43 by bolts. The linear guide rails 51 are perpendicular to the opposite sides of the two first slides 43. The bottom surface of the second slide 52 is provided with a second slide groove 53, and the second slide groove 53 is adapted to the linear guide rails 51.

[0054] The second slide groove 53 is slidably engaged with the linear guide rail 51. The linear guide rail 51 can limit the moving direction of the first slide 43, and the cooperation between the second slide groove 53 and the linear guide rail 51 can prevent the first slide 43 from tilting.

[0055] Since the linear guide rail 51 is perpendicular to the opposite side surfaces of the two first slide platforms 43 , the moving direction of the first slide platform 43 is always perpendicular to the opposite side surfaces of the two first slide platforms 43 .

[0056] A servo oil cylinder 55 is disposed between the linear guide rails 51 , and a mounting groove 54 is penetrated through one side of the second slide 52 , into which the piston rod of the servo oil cylinder 55 is inserted.

[0057] The servo cylinder 55 is fixedly mounted on the top surface of the first slide 43 by bolts, and the piston rod of the servo cylinder 55 is fixedly connected to the second slide 52 by bolts.

[0058] The second slide 52 can be driven to move by controlling the servo cylinder 55 to work.

[0059] When using the equipment in this embodiment, the operator first welds the large arc segment 11, two small arc segments 12 and one straight segment 13 into a module assembly 1, then places the center frame 21 into the inner side of the module assembly 1, and connects the center frame 21 through the connecting beam 22.

[0060] The adjusting threaded sleeve 25 is rotated to drive the fixing screw 23 and the supporting screw 24 to move along the axis of the adjusting threaded sleeve 25 , thereby controlling the distance between the end faces of the fixing screw 23 and the supporting screw 24 and driving the friction pad 27 to abut against the inner side of the module assembly 1 .

[0061] The outer side surface of the straight section 13 is butted against the supporting plate 34 , and then the front fixing frame 31 and the rear fixing frame 32 are fixedly connected by bolts.

[0062] The extrusion screw 38 is rotated by the adjustment head 39 to drive the extrusion screw 38 to move along the axis direction to adjust the distance between the extrusion plate 36 and the outer side of the module assembly 1 until the outer sides of the large arc segment 11 and the small arc segment 12 of the extrusion plate 36 abut against each other. The module assembly 1 is fixed in the front fixing frame 31 and the rear fixing frame 32.

[0063] The front fixing frame 31 and the rear fixing frame 32 are fixedly connected to the clamping plate 57 by bolts.

[0064] The extrusion plate 36 is controlled to separate from the module assembly 1 , the module assembly 1 is moved, and the position of the module assembly 1 is adjusted to ensure that the opposite sides of the two module assemblies 1 are flush with the opposite sides of the two first slides 43 .

[0065] The first motor 46 is controlled to work, driving the output wheel 47 to rotate, thereby driving the first slide 43 to move until the sides of the two first slides 43 abut against each other.

[0066] At this time, the sides of the module assembly 1 are butted against each other.

[0067] The servo cylinder 55 is controlled to work and drive the second slide 52 to move. When the second slide 52 moves, it can drive the mounting platform 56 to move, thereby driving the external fixing frame 3 to move through the clamping plate 57, and further driving the module assembly 1 to move.

[0068] By controlling the moving distance of the second slide 52, the spacing between the module components 1 can be controlled to achieve the adjustment of the weld.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A fixing tool for welding high-precision vacuum chamber modular components, characterized in that: include: A module assembly (1), wherein an inner support frame (2) is provided inside the module assembly (1), an outer fixing frame (3) is provided outside the module assembly (1), a moving assembly (4) is provided below the outer fixing frame (3), and the moving assembly (4) and the outer fixing frame (3) are connected via a weld adjustment assembly (5); The inner support frame (2) comprises a plurality of center frames (21), the outer sides of the center frames (21) are connected to support plates (26) via adjustment components, the top surfaces of the support plates (26) are provided with friction pads (27), the adjustment components are used to adjust the distance between the support plates (26) and the inner walls of the module components (1), and the center frames (21) support the module components (1) via the support plates (26); An external fixing frame (3), the external fixing frame (3) comprising a front fixing frame (31) and a rear fixing frame (32), a support plate (34) being provided on the inner side of the front fixing frame (31), and an extrusion plate (36) being provided on the inner side of the rear fixing frame (32), the support plate (34) and the extrusion plate (36) being used to extrude the module assembly (1) inwards, and cooperate with the inner support frame (2) to clamp the module assembly (1); The moving assembly (4) comprises a bottom plate (41), the top surface of the bottom plate (41) being slidably connected to two first slides (43) via an arc-shaped slide rail (42), the center of the bottom plate (41) and the arc-shaped slide rail (42) being located on the same straight line as the center of the module assembly (1), each of the first slides (43) being connected to the bottom plate (41) via a driving assembly, the driving assembly being used to drive the first slides (43) to move along the arc-shaped slide rail (42); The weld adjustment assembly (5) comprises a mounting platform (56), the top surface of the mounting platform (56) being fixedly connected to the external fixing frame (3) via a clamping plate (57), the axis of the mounting platform (56) being parallel to the opposite sides of the two first slides (43), a second slide (52) being fixedly installed below the mounting platform (56), the second slide (52) being connected to a horizontal moving device, the horizontal moving device being used to drive the second slide (52) to move horizontally along the top surface of the first slide (43).

2. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 1, characterized in that: The adjustment assembly comprises a fixed screw (23), the tail end of the fixed screw (23) is fixedly connected to the outer side surface of the center frame (21), the head of the fixed screw (23) is connected to the support screw (24) via an adjustment threaded sleeve (25), and the head of the support screw (24) is fixedly connected to the support plate (26).

3. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 2, characterized in that: The adjusting threaded sleeve (25) is threadedly connected to the fixing screw rod (23) and the supporting screw rod (24) at the same time, and the threads on the fixing screw rod (23) and the supporting screw rod (24) are in opposite directions.

4. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 1, characterized in that: A connecting plate (33) is provided in the middle of the front fixing frame (31), a supporting frame (35) is provided on a side of the connecting plate (33) close to the module assembly (1), and the supporting plate (34) is fixedly mounted on the top surface of the supporting frame (35).

5. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 1, characterized in that: An extrusion screw (38) is threadedly connected to the rear fixing frame (32), the axis of the extrusion screw (38) faces the module assembly (1), the extrusion screw (38) passes through the rear fixing frame (32) and is connected to a ball head bracket (37), and the ball head bracket (37) is rotatably connected to the extrusion plate (36).

6. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 1, characterized in that: A first slide groove (44) is provided on the bottom surface of the first slide platform (43), the first slide groove (44) is adapted to the arc-shaped slide rail (42), the left and right side surfaces of the first slide platform (43) form a certain angle, and the intersection point of the extension lines of the two side surfaces of the first slide platform (43) is located at the center of the arc-shaped slide rail (42).

7. A high-precision vacuum chamber modular component welding fixture as claimed in claim 1, characterized in that: The driving assembly comprises a first motor (46), the first motor (46) being fixedly mounted on a lower edge of a side of the first slide (43) facing the center of the circle through a mounting frame (45), an output shaft of the first motor (46) passing through the mounting frame (45) and being fixedly connected to an output wheel (47), a side surface of the output wheel (47) being in contact with an inner side surface of the bottom plate (41).

8. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 7, characterized in that: A roller bracket (48) is provided on one side of the first slide (43) away from the center of the circle, and a clamping roller (49) is rotatably mounted below the roller bracket (48), the clamping roller (49) abutting against the outer side surface of the bottom plate (41).

9. A fixing fixture for welding high-precision vacuum chamber modular components as claimed in claim 1, characterized in that: The horizontal moving device comprises two linear guide rails (51), the two linear guide rails (51) are fixedly mounted on the top surface of the first slide (43), the linear guide rails (51) are perpendicular to the opposite side surfaces of the two first slides (43), and the bottom surface of the second slide (52) is provided with a second slide groove (53), and the second slide groove (53) is adapted to the linear guide rails (51).

10. A fixing tool for welding modular components of a high-precision vacuum chamber as claimed in claim 10, characterized in that: A servo oil cylinder (55) is provided between the linear guide rails (51), and a mounting groove (54) is provided through one side of the second slide table (52), and a piston rod of the servo oil cylinder (55) is inserted into the mounting groove (54).

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