A 5m diameter conical bottom ring joint milling and welding integrated device and processing technology

Abstract

The application provides a 5m diameter conical bottom ring seam milling and welding integrated device, the inner wall of a transition ring tire membrane base is provided with a plurality of transition ring tire membrane sliding rails, the conical ring tire membrane base is connected with the transition ring tire membrane sliding rails through sliding blocks, and a first vertical driving assembly is arranged between the conical ring tire membrane base and the transition ring tire membrane sliding rails; the circumferential outer surface of the transition ring tire membrane base is provided with a plurality of leveling mechanisms; the inner wall of the conical ring sliding rail of the conical ring tire membrane base is provided with a conical ring sliding rail, the spherical cover tire membrane base is connected with the conical ring sliding rail through sliding blocks, and a second vertical driving assembly is arranged between the conical ring sliding rail and the spherical cover tire membrane base; the transition ring pressing assembly is arranged on the circumferential periphery of the transition ring tire membrane base; the top inflation mechanism is arranged on the top of the transition ring tire membrane base; the conical ring pressing assembly is arranged outside the conical ring tire membrane base and is connected with the transition ring tire membrane base through a connecting support; and the spherical cover pressing assembly is arranged above the spherical cover tire membrane base. The application solves the problem of realizing the lifting of the spherical top cover ring seam welding pad plate in a narrow space.

Description

Technical Field

[0001] The present invention belongs to the field of rockets, and in particular relates to a 5m diameter cone bottom annular seam milling and welding integrated device and a processing technology. Background Art

[0002] To meet engine distribution requirements, the first-stage tank bottom of a manned lunar launch vehicle features a 5m-diameter cone-bottom structure. It consists of three main components: a cone ring, a spherical top cover, and a transition ring. The cone ring is formed using a spinning process with a 90° cone angle. The spherical top cover is a concave, irregular-shaped structure with a cross-section similar to an inverted Ω. The transition ring is a Y-shaped cone ring, machined as a whole, with a 15mm thickness in the weld zone of each component. The joint seam between the transition ring and the cone ring is called the large-end seam of the cone bottom, and the joint seam between the cone ring and the spherical top cover is called the small-end seam of the cone bottom. The current manufacturing difficulties in welding the cone ring seam are mainly due to the following two factors:

[0003] (1) The 5m diameter cone bottom structure was used for the first time in China. The thickness of the welding area reached 15mm. The structure was very rigid and difficult to assemble. In particular, the cone bottom used a spherical top cover with a special structure. The back space of the butt joint between the spherical top cover and the small end of the cone ring was small and irregular in shape, which brought certain difficulties to the design of the back support tooling. At the same time, when assembling the large end ring seam and the transition ring, considering the structural rigidity and the poor surface of the cone ring, it was often difficult to eliminate the misalignment, which did not meet the welding process requirements.

[0004] (2) The 15mm thick cone bottom welding process is difficult. The existing tungsten inert gas arc welding process, namely positioning + bottoming + covering process, is applicable to a thickness range of 3 to 10mm. Therefore, there is a risk of inability to weld through thick plates, which poses a certain risk to product quality.

[0005] In the early stage, for the assembly welding of the 5m diameter cone bottom annular seam, Tianjin Aerospace Changzheng Rocket Manufacturing Co., Ltd. applied for a utility model patent for "A cone box bottom assembly welding device", and the authorization announcement number is: CN211465131U. The patent describes a simple tooling and temporary fusion welding process method used for the cone bottom annular seam; the patent describes that the tooling is mainly composed of components such as the base, support frame, column, clamping mechanism, etc., and needs to be used in conjunction with the existing 5m diameter cross positioner. The welding process method used is: welding edge groove + manual tungsten inert gas arc welding positioning welding + manual tungsten inert gas arc welding bottom welding + manual consumable gas arc welding two-layer covering process; the assembly welding process is: first, based on the transition ring and Draw milling tangent lines for the large and small ends of the circular ring along the perimeter of the welding area of ​​the spherical top cover assembly, and mill the allowances for the large and small ends of the circular ring in the machining equipment; then, open a groove at the part to be welded, hoist the welding device to the cross positioner platform, and use the pressure plate to fix the tooling base to the positioner platform bolts; hoist the transition ring and fix it, hoist the circular ring to align it with the transition ring and install the pressing mechanism, and weld the transition ring seam using a two-layer covering process of manual tungsten inert gas arc welding positioning welding + manual tungsten inert gas arc welding bottom welding + manual melting electrode gas arc welding. Remove the transition ring seam clamping mechanism, hoist the spherical top cover to align it with the small end of the conical ring, press both sides of the small end seam, and weld the small end seam of the spherical top cover using the same welding process as the transition ring seam;

[0006] The current assembly process for achieving the annular seam between the large and small ends of the cone bottom has the following main disadvantages:

[0007] (1) The simple tooling for realizing the assembly and welding of the annular seam of the cone bottom cannot realize the flipping function by itself, and needs to be used in conjunction with the cross positioner at the production site so that the tooling can be flipped to realize the welding requirements of the annular seam. The tooling is highly dependent on the cross positioner. At the same time, the upper and lower end allowances of the cone ring cannot be removed at this station, and the upper and lower end allowances of the ring need to be milled in special machining equipment. There is a secondary assembly problem in the process of assembly-milling-reassembly of the ring, resulting in poor assembly accuracy of the large and small ends of the cone ring and the annular seam of the transition ring / spherical top cover. At the same time, the tooling is a simple tooling, which only uses a support frame with poor rigidity and bolts to tighten the welding pad. In addition, the product itself is thick and rigid. After the ring and the transition ring / spherical top cover are assembled, the roundness, gap and staggered seam often exceed the process requirements, which brings risks to the welding process.

[0008] (2) Since the existing process method cannot achieve the welding of 15mm plate, a two-layer covering process is adopted for the cone bottom annular seam: beveling the welded part + manual tungsten inert gas arc welding positioning welding + manual tungsten inert gas arc welding bottom welding + manual consumable gas arc welding. Although this method can achieve the welding of products, it also encounters the following problems:

[0009] a: The plate thickness is 15mm. In order to achieve full welding of the weld, a 4-5mm groove needs to be opened at the welded part. The groove is opened by manual milling. First, the milling groove has poor accuracy and consistency. Twenty-second, the efficiency is too low.

[0010] b: The welding process is: manual tungsten inert gas arc welding positioning welding + manual tungsten inert gas arc welding bottom welding + manual consumable electrode argon arc welding two-layer covering process. First, tungsten inert gas arc welding is used for positioning and bottom welding, and consumable electrode argon arc welding is used for covering, and it is a two-layer covering. Especially when covering, the welding current is large, and the welded product is greatly deformed. At the same time, due to the influence of deformation factors, large misalignment occurs in some areas of the weld, and the stress is more concentrated. Secondly, whether it is positioning welding, bottom welding or covering welding, manual welding methods are used, which is highly dependent on the welder, and the surface consistency of the weld after welding is poor. For defective areas, multiple repair welding is required to eliminate the defects.

[0011] In summary, although the current equipment and process methods can solve the temporary assembly welding of the cone bottom, the problems encountered are also obvious. If the equipment and process methods continue to be used, the assembly accuracy of the cone bottom annular seam and the strength coefficient of the welded joint will not be improved. The reliability and stability of the produced cone bottom products are poor, the product quality cannot be effectively guaranteed, and it cannot meet the three high standards of the manned lunar launch vehicle. Summary of the Invention

[0012] In view of this, the present invention aims to propose an integrated milling and welding device and processing technology for a 5m diameter cone bottom annular seam to solve the above problems.

[0013] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0014] A 5m diameter cone-bottom ring seam milling and welding integrated device, comprising a transition ring fetal membrane base, a conical ring fetal membrane seat, a spherical cover fetal membrane seat, a transition ring clamping assembly, a leveling mechanism, a top expansion assembly, a conical ring clamping assembly, and a spherical cover clamping assembly; the inner wall of the transition ring fetal membrane base is provided with a plurality of transition ring fetal membrane slide rails, the conical ring fetal membrane seat is connected to the transition ring fetal membrane slide rails via a slider, and a No. 1 vertical drive assembly is provided between the two; to achieve the coordination between the conical ring fetal membrane seat and the transition ring fetal membrane base, the circumferential outer surface of the transition ring fetal membrane base is provided with a plurality of leveling mechanisms;

[0015] The inner wall of the conical ring fetal membrane seat is provided with a conical ring slide rail, and the spherical cover fetal membrane seat is connected to the conical ring slide rail through a slider, and a second vertical drive component is provided between the two to achieve the cooperation between the conical ring fetal membrane seat and the spherical cover fetal membrane seat;

[0016] The transition ring clamping assembly is arranged on the outer circumference of the transition ring fetal membrane base; the expansion mechanism is arranged on the top of the transition ring fetal membrane base; the conical ring clamping assembly is arranged outside the conical ring fetal membrane seat and is connected to the transition ring fetal membrane base through a connecting bracket; the spherical cover clamping assembly is arranged above the spherical cover fetal membrane seat.

[0017] Furthermore, the transition ring membrane base is used to position the transition ring body, and the leveling mechanism is evenly distributed on the circumferential outer surface of the transition ring membrane base. The leveling mechanism includes a leveling frame, a leveling block and a leveling bolt. The leveling frame is installed to the transition ring membrane base, and the leveling block is slidably connected to the slide groove of the leveling frame. The leveling bolt passes through the bottom of the leveling frame to achieve fine-tuning of the leveling block; the transition ring body is placed on several leveling blocks.

[0018] Furthermore, the expansion mechanism includes an expansion bar and an expansion block, which are arranged at intervals on the top of the transition ring fetal membrane base to form a circular ring shape; a wedge-shaped structure is formed between the two expansion bars, and the expansion block is arranged between the two expansion bars, fitting the contour of the expansion bar; a sliding assembly is provided at the bottom of the expansion bar, and the inner side of the expansion bar and the inner side of the expansion block are respectively connected to a driving source to realize the movement of the expansion bar and the expansion block; the sliding assembly is a mechanism in which the slide rails cooperate with each other to achieve the sliding purpose.

[0019] Furthermore, the transition ring clamping assembly includes a transition ring clamping seat and a transition ring clamping mechanism, the transition ring clamping seat is fixedly installed to the transition ring fetal membrane base, the transition ring clamping seat forms a first mounting surface and a second mounting surface, the transition ring clamping mechanism is evenly distributed on the transition ring clamping seat in a circular shape, wherein the transition ring clamping mechanism includes a transition ring clamping cylinder and a transition ring clamping plate; the transition ring clamping cylinder is installed to the first mounting surface, one end of the transition ring clamping plate is connected to the output end of the transition ring clamping cylinder, and the other end acts on the transition ring body; a gap for placing the transition ring body is formed between the transition ring clamping seat and the transition ring fetal membrane base; the first mounting surface is also provided with a number of evenly distributed connecting rod fixing seats.

[0020] Furthermore, the conical ring pressing assembly fits the contour of the conical ring fetal membrane seat and is used to press the conical ring body placed on the conical ring fetal membrane seat; the conical ring pressing assembly includes a conical ring pressing seat, a conical ring large end pressing mechanism installed at one end of the conical surface with a large diameter, and a conical ring small end pressing mechanism installed at one end of the conical surface with a small diameter; the middle part of the conical ring pressing seat is provided with a connection to a frame, one end of the connection to the frame is fixed to the connecting rod fixing seat, and the other end is hinged to the conical ring pressing seat; a No. 1 force plate and a No. 2 force plate are provided on the conical ring pressing seat; the No. 1 force plate is used to install several evenly distributed conical ring large end pressing assemblies for pressing the large end of the conical ring body; the No. 2 force plate is used to install several evenly distributed conical ring small end pressing assemblies for pressing the small end of the conical ring body.

[0021] Furthermore, the conical ring big end pressing assembly includes a big end pressing cylinder and a big end pressing plate, one end of the big end pressing cylinder is hinged to the top of the first force plate, the first end of the big end pressing plate is hinged to the output end of the big end pressing cylinder, and the part of the big end pressing plate close to the second end is hinged to the bottom of the first force plate;

[0022] The small end pressing assembly of the conical ring includes a small end pressing cylinder, a small end pressing push block and a small end pressing plate; the small end pressing cylinder is installed to the second force plate, the small end pressing push block is connected to the output end of the small end pressing cylinder, the middle part of the small end pressing plate is connected to the second force plate through a hinged mounting seat, the small end pressing push block is arranged below the first end of the small end pressing plate, and the second end of the small end pressing plate is used to press the conical ring body.

[0023] Furthermore, a support column is provided in the middle of the spherical cover fetal membrane seat, and the spherical cover pressing assembly includes a spherical cover pressing seat and a spherical cover pressing mechanism, the middle part of the spherical cover pressing seat is sleeved on the support column, and the limiting structure at the top of the support column is used to limit the spherical cover pressing seat, and the spherical cover pressing seat is pressed downwardly and fixed by a threaded connection between the nut and the support column; the upper surface of the spherical cover pressing seat is provided with a plurality of spherical cover pressing mechanisms evenly distributed in a circular shape, and the spherical cover pressing mechanism includes a spherical cover pressing cylinder and a spherical cover pressing plate, the spherical cover pressing cylinder is hinged to the mounting seat, the first end of the spherical cover pressing plate is hinged to the output section of the spherical cover pressing cylinder, and the middle part of the spherical cover pressing plate is hinged to the spherical cover pressing seat, so that the second end of the spherical cover pressing plate is pressed on the spherical cover body.

[0024] Furthermore, the cone bottom passes through the spherical cover body, the conical ring body, and the transition ring body; the weld between the transition ring body and the conical ring body serves as the first weld, and the weld between the conical ring body and the spherical cover body serves as the second weld. The first weld is arranged between a number of transition ring clamping plates and a number of large-end clamping plates; the second weld is arranged between a number of small-end clamping plates and a number of spherical cover clamping plates.

[0025] Furthermore, the expansion block and the expansion strip form a welding pad; the top of the conical ring fetal membrane seat forms another welding pad.

[0026] A processing technology for a 5m diameter cone bottom annular seam milling and welding integrated device comprises the following steps:

[0027] S1. Assemble the transition ring body and level it. Assemble the transition ring body between the transition ring membrane base and the transition ring fastening assembly. Fit the end face of the large end of the transition ring body to the leveling mechanism. Check the gap between the large end and the welding pad formed by the top expansion strip and the top expansion block, and perform leveling.

[0028] S2. Press the transition ring welding end; press the transition ring through the transition ring pressing mechanism;

[0029] S3, assembling the conical ring body; adjusting the No. 1 vertical drive assembly and the No. 2 vertical drive assembly, raising the conical ring fetal membrane seat, lowering the spherical cover fetal membrane seat, and then assembling the conical ring body;

[0030] S4, tighten the welding end of the cone ring; install the cone ring clamping assembly; and tighten the two ends of the cone ring body through the cone ring large end clamping mechanism and the cone ring small end clamping mechanism;

[0031] S5, milling the large end of the cone ring; milling the large end of the ring with a milling tool;

[0032] S6. Weld the workpieces together; use a 2mm long positioning stirring head to evenly distribute 8 small sections along the annular seam at the bottom of the cone for segment tack welding, with each section being 100 to 200mm long. After the segment tack welding is completed, use the same 2mm positioning stirring head to perform full circle tack welding. Then use a conventional stirring head with an 8mm long needle to perform formal secondary tack welding along the annular seam at the bottom of the cone, with the effective welding depth reaching 8mm. Then use a 15mm retraction stirring head to formally weld the first weld.

[0033] S7. Remove the conical ring pressing assembly and mill the small end of the conical ring; install the milling cutter on the spindle and mill the small end of the conical ring according to the outer diameter of the spherical cover until it is tightly fitted with the outer diameter of the spherical cover. After milling, remove the excess material and lift the welding plate through the No. 2 vertical lifting assembly to make the surface of the welding plate fit with the inner surface of the small end of the conical ring to ensure that the product fits the plate;

[0034] S8. Assemble the spherical cover body and the spherical cover pressing assembly;

[0035] S9. Weld the weld of the spherical cover body; use 2mm positioning head for segment tack welding; 2mm positioning head for full circle tack welding; 8mm conventional head for tack welding; 15mm pull-back head for the formal welding process to weld the second weld;

[0036] S10. Dismantle the tooling and remove the burrs for inspection.

[0037] Compared with the existing technology, the 5m diameter cone bottom annular seam milling and welding integrated device and processing technology described in the present invention have the following advantages:

[0038] (1) The present invention proposes an integrated assembly-milling-welding concept for friction stir welding of 5m diameter cone bottom annular seams, designs and manufactures the first domestic integrated assembly-milling-welding process equipment for friction stir welding of 5m diameter cone bottom annular seams, solves the difficult problem of realizing the lifting and lowering of the spherical top cover annular seam welding pad in a narrow space, and provides hardware conditions for realizing the in-situ integrated manufacturing of the 5m diameter cone bottom transition ring, circular ring and spherical top cover assembly, milling and welding.

[0039] (2) The present invention is based on the 5m diameter cone bottom annular seam stir friction welding assembly-milling-welding integrated process equipment, and has developed a 5m diameter cone bottom annular seam stir friction welding assembly-milling-welding integrated method, which realizes the in-situ assembly, milling and stir friction welding of the 5m diameter cone bottom annular seam, and effectively controls and ensures the deformation of the cone bottom surface after welding and the shape and position dimensional accuracy.

[0040] (3) The present invention aims at the friction stir welding of ultra-long circumferential seams of 15mm thick plates, and adopts a process method of 2mm positioning head segment positioning welding + 2mm positioning head full circle positioning welding + 8mm conventional head positioning welding + 15mm withdrawal head formal withdrawal welding, which ensures the stability of the welding process and the reliability of the welded joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0042] Figure 1 This is a cross-sectional view of a 5m diameter cone bottom annular seam milling and welding integrated device according to an embodiment of the present invention;

[0043] Figure 2 The embodiment of the present invention Figure 1 A partial enlarged view of middle A;

[0044] Figure 3 This is a schematic diagram of the transitional fetal membrane base according to an embodiment of the present invention;

[0045] Figure 4 The embodiment of the present invention Figure 3 A partial enlarged view of middle A;

[0046] Figure 5 The embodiment of the present invention Figure 3A partial enlarged view of middle B;

[0047] Figure 6 Schematic diagram of a 5m diameter cone bottom annular seam milling and welding integrated device according to an embodiment of the present invention;

[0048] Figure 7 This is a cross-sectional view of the cone bottom according to an embodiment of the present invention.

[0049] Description of reference numerals:

[0050] 1. Transition ring fetal membrane base; 2. Cone ring fetal membrane seat; 3. Spherical cover fetal membrane seat; 31. Support column; 4. Transition ring clamping assembly; 41. Transition ring clamping seat; 42. Transition ring clamping mechanism; 421. Transition ring clamping cylinder; 422. Transition ring clamping piece; 5. Leveling mechanism; 51. Leveling frame; 52. Leveling block; 53. Leveling bolt; 6. Top expansion assembly; 61. Top expansion strip; 62. Top expansion block; 7. Cone ring clamping assembly; 71. Cone ring clamping seat; 72. Cone ring large end clamping mechanism; 721. Large end clamping cylinder; 722. Large End clamping plate; 73, conical ring small end clamping mechanism; 731, small end clamping cylinder; 732, small end clamping push block; 733, small end clamping plate; 74, No. 1 force plate; 75, No. 2 force plate; 8, spherical cover clamping assembly; 81, spherical cover clamping seat; 82, spherical cover clamping mechanism; 821, spherical cover clamping cylinder; 822, spherical cover clamping plate; 9, No. 1 vertical drive assembly; 10, No. 2 vertical drive assembly; 11, transition ring body; 12, conical ring body; 13, spherical cover body; 14, first weld; 15, second weld. DETAILED DESCRIPTION

[0051] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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, 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0053] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0054] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0055] A 5m diameter cone-bottom ring seam milling and welding integrated device, comprising a transition ring membrane base 1, a conical ring membrane seat 2, a spherical cover membrane seat 3, a transition ring clamping assembly 4, a leveling mechanism 5, a top expansion assembly 6, a conical ring clamping assembly 7, and a spherical cover clamping assembly 8; the inner wall of the transition ring membrane base 1 is provided with a plurality of transition ring membrane slide rails, the conical ring membrane seat 2 is connected to the transition ring membrane slide rails via a slider, and a No. 1 vertical drive assembly 9 is provided between the two; to achieve the coordination between the conical ring membrane seat 2 and the transition ring membrane base 1, the circumferential outer surface of the transition ring membrane base 1 is provided with a plurality of leveling mechanisms 5;

[0056] The inner wall of the conical ring fetal membrane seat 2 is provided with a conical ring slide rail, and the spherical cover fetal membrane seat 3 is connected to the conical ring slide rail through a slider, and a second vertical drive component 10 is provided between the two to achieve the cooperation between the conical ring fetal membrane seat 2 and the spherical cover fetal membrane seat 3;

[0057] The transition ring clamping assembly 4 is arranged on the outer circumference of the transition ring fetal membrane base 1; the expansion mechanism is arranged on the top of the transition ring fetal membrane base 1; the conical ring clamping assembly 7 is arranged on the outside of the conical ring fetal membrane seat 2, and is connected to the transition ring fetal membrane base 1 through a connecting bracket; the spherical cover clamping assembly 8 is arranged above the spherical cover fetal membrane seat 3.

[0058] Preferably, the first vertical drive assembly 9 includes a first vertical drive motor, which is arranged on the inner side of the transition ring fetal membrane base 1. The transition ring fetal membrane base 1 and the conical ring fetal membrane base are able to slide relative to each other by setting a slide rail slider structure; and the first drive assembly is evenly distributed on the inner wall; the second vertical drive assembly 10 has a similar working principle to the first vertical drive assembly, and both control the movement between the conical ring fetal membrane seat and the spherical cover fetal membrane seat 3 through a drive source;

[0059] Preferably, the transition ring membrane base 1 is used to position the transition ring body 11, and the leveling mechanism 5 is evenly distributed on the circumferential outer surface of the transition ring membrane base 1. The leveling mechanism 5 includes a leveling frame 51, a leveling block 52 and a leveling bolt 53. The leveling frame 51 is installed to the transition ring membrane base 1, and the leveling block 52 is slidably connected to the slide groove of the leveling frame 51. The leveling bolt 53 passes through the bottom of the leveling frame 51 to achieve fine-tuning of the leveling block 52; the transition ring body 11 is placed on several leveling blocks 52, and the leveling mechanism 5 is used to fine-tune the transition ring body 11 placed thereon.

[0060] Preferably, the expansion mechanism includes an expansion bar 61 and an expansion block 62, and the expansion bar 61 and the expansion block 62 are arranged at intervals on the top of the transition ring fetal membrane base 1 to form a circular ring shape; a wedge-shaped structure is formed between the two expansion bars 61, and the expansion block 62 is arranged between the two expansion bars 61, fitting the contour of the expansion bar 61; a sliding assembly is provided at the bottom of the expansion bar 61, and the inner side of the expansion bar 61 and the inner side of the expansion block 62 are respectively connected to a driving source to realize the movement of the expansion bar 61 and the expansion block 62; the sliding assembly is a mechanism in which slide rails cooperate with each other to achieve the purpose of sliding.

[0061] The top expansion strip 61 and the top expansion block 62 also form a circular ring structure as a whole. The top expansion strip 61 and the top expansion block 62 can be used as a welding backing plate to facilitate welding.

[0062] Preferably, the transition ring pressing assembly 4 includes a transition ring pressing seat 41 and a transition ring pressing mechanism 42, the transition ring pressing seat 41 is fixedly installed to the transition ring fetal membrane base 1, the transition ring pressing seat 41 forms a first mounting surface and a second mounting surface, the transition ring pressing mechanism 42 is evenly distributed on the transition ring pressing seat 41 in a circular shape, wherein the transition ring pressing mechanism 42 includes a transition ring pressing cylinder 421 and a transition ring pressing plate 422; the transition ring pressing cylinder 421 is installed to the first mounting surface, one end of the transition ring pressing plate 422 is connected to the output end of the transition ring pressing cylinder 421, and the other end acts on the transition ring body 11; a gap for placing the transition ring body 11 is formed between the transition ring pressing seat 41 and the transition ring fetal membrane base 1; the first mounting surface is also provided with a plurality of evenly distributed connecting rod fixing seats.

[0063] Preferably, the conical ring pressing assembly 7 fits the contour of the conical ring fetal membrane seat 2 and is used to press the conical ring body 12 placed on the conical ring fetal membrane seat 2; the conical ring pressing assembly 7 includes a conical ring pressing seat 71, a conical ring large end pressing mechanism 72 installed at one end of the conical surface with a large diameter, and a conical ring small end pressing mechanism 73 installed at one end of the conical surface with a small diameter; the middle part of the conical ring pressing seat 71 is provided with a connection to a frame, one end of the connection to the frame is fixed to the connecting rod fixing seat, and the other end is hinged to the conical ring pressing seat 71; a No. 1 force plate 74 and a No. 2 force plate 75 are provided on the conical ring pressing seat 71; the No. 1 force plate 74 is used to install several evenly distributed conical ring large end pressing assemblies for pressing the large end of the conical ring body 12; the No. 2 force plate 75 is used to install several evenly distributed conical ring small end pressing assemblies for pressing the small end of the conical ring body 12.

[0064] Preferably, the conical ring big end pressing assembly includes a big end pressing cylinder 721 and a big end pressing piece 722, one end of the big end pressing cylinder 721 is hinged to the top of the first force plate 74, the first end of the big end pressing piece 722 is hinged to the output end of the big end pressing cylinder 721, and the part of the big end pressing piece 722 close to the second end is hinged to the bottom of the first force plate 74;

[0065] The small end pressing assembly of the conical ring includes a small end pressing cylinder 731, a small end pressing push block 732 and a small end pressing plate 733; the small end pressing cylinder 731 is installed to the second force plate 75, the small end pressing push block 732 is connected to the output end of the small end pressing cylinder 731, the middle part of the small end pressing plate 733 is connected to the second force plate 75 through a hinged mounting seat, the small end pressing push block 732 is arranged below the first end of the small end pressing plate 733, and the second end of the small end pressing plate 733 is used to press the conical ring body 12.

[0066] Preferably, a support column 31 is provided in the middle of the spherical cover fetal membrane seat 3, and the spherical cover pressing assembly 8 includes a spherical cover pressing seat 81 and a spherical cover pressing mechanism 82. The middle part of the spherical cover pressing seat 81 is sleeved to the support column 31, and the limiting structure on the top of the support column 31 is used to limit the spherical cover pressing seat 81, and the spherical cover pressing seat 81 is pressed downward and fixed by a threaded connection between the nut and the support column 31; the upper surface of the spherical cover pressing seat 81 is provided with some The spherical cover pressing mechanism 82 is evenly distributed in a circular shape, and the spherical cover pressing mechanism 82 includes a spherical cover pressing cylinder 821 and a spherical cover pressing plate 822. The spherical cover pressing cylinder 821 is hinged to the mounting seat, the first end of the spherical cover pressing plate 822 is hinged to the output section of the spherical cover pressing cylinder 821, and the middle part of the spherical cover pressing plate 822 is hinged to the spherical cover pressing seat 81, so that the second end of the spherical cover pressing plate 822 can press the spherical cover body 13.

[0067] Preferably, the cone bottom passes through the spherical cover body 13, the conical ring body 12, and the transition ring body 11; the weld between the transition ring body 11 and the conical ring body 12 serves as the first weld 14, and the weld between the conical ring body 12 and the spherical cover body 13 serves as the second weld 15. The first weld 14 is arranged between a number of transition ring clamping plates 422 and a number of large end clamping plates 722; the second weld 15 is arranged between a number of small end clamping plates 733 and a number of spherical cover clamping plates 822.

[0068] Preferably, the expansion block 62 and the expansion strip 61 form a welding pad; the top of the conical ring fetal membrane seat 2 forms another welding pad.

[0069] A processing technology for a 5m diameter cone bottom annular seam milling and welding integrated device comprises the following steps:

[0070] S1. Assemble the transition ring body 11 and level it. Assemble the transition ring body 11 between the transition ring membrane base 1 and the transition ring fastening assembly. The end face of the large end of the transition ring body 11 is in contact with the leveling mechanism 5. Check the gap between the large end and the welding pad formed by the top expansion strip 61 and the top expansion block 62, and perform the leveling operation.

[0071] S2, pressing the transition ring welding end; pressing the transition ring by the transition ring pressing mechanism 42;

[0072] S3, assembling the conical ring body 12; adjusting the first vertical drive assembly 9 and the second vertical drive assembly 10, raising the conical ring fetal membrane seat 2, lowering the spherical cover fetal membrane seat 3, and then assembling the conical ring body 12;

[0073] S4, pressing the welding end of the cone ring; installing the cone ring pressing assembly 7; pressing the ends of the cone ring body 12 by the cone ring large end pressing mechanism 72 and the cone ring small end pressing mechanism 73;

[0074] S5, milling the large end of the cone ring; milling the large end of the ring with a milling tool;

[0075] S6. Weld the workpieces together; use a 2mm long tack stirrer to evenly distribute 8 small sections along the first weld for tack welding, with each section being 100 to 200mm long. After the tack welding is completed, use the same 2mm tack stirrer to perform full-circle tack welding. Then, use a conventional 8mm long tack stirrer to perform a formal secondary tack welding along the first weld, with the effective welding depth reaching 8mm. Then, use a 15mm retraction stirrer to formally weld the first weld 14.

[0076] S7. Remove the conical ring pressing assembly 7 and mill the small end of the conical ring; install the milling cutter on the spindle and mill the small end of the conical ring according to the outer diameter of the spherical cover until it is tightly fitted with the outer diameter of the spherical cover. After milling, remove the excess material and raise the welding pad through the No. 2 vertical lifting assembly to make the surface of the welding pad fit with the inner surface of the small end of the conical ring to ensure that the product fits the pad;

[0077] S8, assembling the spherical cover body 13 and the spherical cover pressing assembly 8;

[0078] S9, welding the weld of the spherical cover body 13; using 2mm positioning head segment tack welding; 2mm positioning head full circle tack welding; 8mm conventional head tack welding; 15mm back-draw head formal welding process to weld the second weld 15;

[0079] S10. Dismantle the tooling and remove the burrs for inspection.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A 5m diameter cone bottom annular seam milling and welding integrated device, characterized by: It includes a transition ring fetal membrane base, a conical ring fetal membrane seat, a spherical cover fetal membrane seat, a transition ring pressing assembly, a leveling mechanism, a top expansion assembly, a conical ring pressing assembly and a spherical cover pressing assembly; the inner wall of the transition ring fetal membrane base is provided with a plurality of transition ring fetal membrane slide rails, the conical ring fetal membrane seat is connected to the transition ring fetal membrane slide rails through a slider, and a No. 1 vertical drive assembly is provided between the two; to achieve the cooperation between the conical ring fetal membrane seat and the transition ring fetal membrane base, the circumferential outer surface of the transition ring fetal membrane base is provided with a plurality of leveling mechanisms; The inner wall of the conical ring fetal membrane seat is provided with a conical ring slide rail, and the spherical cover fetal membrane seat is connected to the conical ring slide rail through a slider, and a second vertical drive component is provided between the two to achieve the cooperation between the conical ring fetal membrane seat and the spherical cover fetal membrane seat; The transition ring pressing assembly is arranged on the periphery of the transition ring fetal membrane base; the top expansion assembly is arranged on the top of the transition ring fetal membrane base; the conical ring pressing assembly is arranged outside the conical ring fetal membrane seat and is connected to the transition ring fetal membrane base through a connecting bracket; the spherical cover pressing assembly is arranged above the spherical cover fetal membrane seat; The transition ring clamping assembly includes a transition ring clamping seat and a transition ring clamping mechanism, the transition ring clamping seat is fixedly installed to the transition ring fetal membrane base, the transition ring clamping seat forms a first mounting surface and a second mounting surface, the transition ring clamping mechanism is evenly distributed on the transition ring clamping seat in a circular shape, wherein the transition ring clamping mechanism includes a transition ring clamping cylinder and a transition ring clamping plate; the transition ring clamping cylinder is installed to the first mounting surface, one end of the transition ring clamping plate is connected to the output end of the transition ring clamping cylinder, and the other end acts on the transition ring body; a gap for placing the transition ring body is formed between the transition ring clamping seat and the transition ring fetal membrane base; the first mounting surface is also provided with a number of evenly distributed connecting rod fixing seats; The conical ring pressing assembly fits the contour of the conical ring fetal membrane seat and is used to press the conical ring body placed on the conical ring fetal membrane seat; the conical ring pressing assembly includes a conical ring pressing seat, a conical ring large end pressing mechanism installed to the large diameter end of the conical surface and a conical ring small end pressing mechanism installed to the small diameter end of the conical surface; a connecting bracket is provided in the middle of the conical ring pressing seat, one end of the connecting bracket is fixed to the connecting rod fixing seat, and the other end is hinged to the conical ring pressing seat; a No. 1 force plate and a No. 2 force plate are provided on the conical ring pressing seat; the No. 1 force plate is used to install several evenly distributed conical ring large end pressing assemblies for pressing the large end of the conical ring body; the No. 2 force plate is used to install several evenly distributed conical ring small end pressing assemblies for pressing the small end of the conical ring body.

2. The 5m diameter cone bottom annular seam milling and welding integrated device according to claim 1, characterized in that: The transition ring membrane base is used to position the transition ring body, and the leveling mechanism is evenly distributed on the circumferential outer surface of the transition ring membrane base. The leveling mechanism includes a leveling frame, a leveling block and a leveling bolt. The leveling frame is installed to the transition ring membrane base, and the leveling block is slidably connected to the slide groove of the leveling frame. The leveling bolt passes through the bottom of the leveling frame to achieve fine-tuning of the leveling block; the transition ring body is placed on several leveling blocks.

3. The 5m diameter cone bottom annular seam milling and welding integrated device according to claim 2, characterized in that: The expansion assembly includes an expansion bar and an expansion block, which are arranged at intervals on the top of the transition ring fetal membrane base to form a circular ring; a wedge-shaped structure is formed between the two expansion bars, and the expansion block is arranged between the two expansion bars, fitting the contour of the expansion bar; a sliding assembly is provided at the bottom of the expansion bar, and the inner side of the expansion bar and the inner side of the expansion block are respectively connected to a driving source to realize the movement of the expansion bar and the expansion block; the sliding assembly is a mechanism in which the slide rails cooperate with each other to achieve the sliding purpose.

4. The 5m diameter cone bottom annular seam milling and welding integrated device according to claim 3, characterized in that: The conical ring big end pressing assembly includes a big end pressing cylinder and a big end pressing plate, one end of the big end pressing cylinder is hinged to the top of the first force plate, the first end of the big end pressing plate is hinged to the output end of the big end pressing cylinder, and the part of the big end pressing plate close to the second end is hinged to the bottom of the first force plate; The small end pressing assembly of the conical ring includes a small end pressing cylinder, a small end pressing push block and a small end pressing plate; the small end pressing cylinder is installed to the second force plate, the small end pressing push block is connected to the output end of the small end pressing cylinder, the middle part of the small end pressing plate is connected to the second force plate through a hinged mounting seat, the small end pressing push block is arranged below the first end of the small end pressing plate, and the second end of the small end pressing plate is used to press the conical ring body.

5. The 5m diameter cone bottom annular seam milling and welding integrated device according to claim 4, characterized in that: The middle part of the spherical cover fetal membrane seat is provided with a support column, and the spherical cover pressing assembly includes a spherical cover pressing seat and a spherical cover pressing mechanism, the middle part of the spherical cover pressing seat is sleeved on the support column, and the limiting structure at the top of the support column is used to limit the spherical cover pressing seat, and the spherical cover pressing seat is pressed downward and fixed by a threaded connection between the nut and the support column; the upper surface of the spherical cover pressing seat is provided with a plurality of spherical cover pressing mechanisms evenly distributed in a circular shape, and the spherical cover pressing mechanism includes a spherical cover pressing cylinder and a spherical cover pressing plate, the spherical cover pressing cylinder is hinged to the mounting seat, the first end of the spherical cover pressing plate is hinged to the output section of the spherical cover pressing cylinder, and the middle part of the spherical cover pressing plate is hinged to the spherical cover pressing seat, so that the second end of the spherical cover pressing plate is pressed on the spherical cover body.

6. The 5m diameter cone bottom annular seam milling and welding integrated device according to claim 5, characterized in that: The cone bottom is composed of a spherical cover body, a conical ring body, and a transition ring body; the weld between the transition ring body and the conical ring body serves as a first weld, and the weld between the conical ring body and the spherical cover body serves as a second weld. The first weld is arranged between a number of transition ring clamping plates and a number of large-end clamping plates; the second weld is arranged between a number of small-end clamping plates and a number of spherical cover clamping plates.

7. The 5m diameter cone bottom annular seam milling and welding integrated device according to claim 6, characterized in that: The top expansion block and the top expansion strip form a welding pad; the top of the conical ring fetal membrane seat forms another welding pad.

8. The processing technology of the 5m diameter cone bottom annular seam milling and welding integrated device according to claim 7 is characterized in that: The following steps are included: S1. Assemble the transition ring body and level it. Assemble the transition ring body between the transition ring membrane base and the transition ring pressing assembly. Fit the end face of the large end of the transition ring body to the leveling mechanism. Check the gap between the large end and the welding pad formed by the top expansion strip and the top expansion block, and perform leveling. S2, pressing the transition ring welding end; pressing the transition ring body through the transition ring pressing mechanism; S3, assembling the conical ring body; adjusting the No. 1 vertical drive assembly and the No. 2 vertical drive assembly, raising the conical ring fetal membrane seat, lowering the spherical cover fetal membrane seat, and then assembling the conical ring body; S4, pressing the welding end of the cone ring body; installing the cone ring pressing assembly; pressing the two ends of the cone ring body through the cone ring large end pressing mechanism and the cone ring small end pressing mechanism; S5, milling the large end of the cone ring body; performing milling operation on the large end of the cone ring body by using a milling tool; S6. Weld the workpieces together; use a 2mm long positioning stirring head to evenly distribute 8 small sections along the first weld for segment tack welding, with each section being 100 to 200mm long. After the segment tack welding is completed, use the same 2mm positioning stirring head to perform full circle tack welding. Then use a conventional stirring head with an 8mm long needle to perform formal secondary tack welding along the first weld, with the effective welding depth reaching 8mm. Then use a 15mm retraction stirring head to formally weld the first weld. S7. Remove the conical ring pressing assembly and mill the small end of the conical ring body; install the milling cutter on the spindle and mill the small end of the conical ring body according to the outer diameter of the spherical cover body until it is tightly fitted with the outer diameter of the spherical cover body. After milling, remove the excess material and raise the welding pad through the No. 2 vertical drive assembly to make the surface of the welding pad fit with the inner surface of the small end of the conical ring body to ensure that the product fits the welding pad; S8. Assemble the spherical cover body and the spherical cover pressing assembly; S9. Weld the weld of the spherical cover body; use 2mm locating head for segment tack welding; 2mm locating head for full circle tack welding; 8mm conventional head for tack welding; 15mm retractable stirring head for the formal welding process to weld the second weld; S10. Dismantle the tooling and remove the burrs for inspection.

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