Method for manufacturing a stop baffle

Abstract

A method for making a stop baffle, firstly, spacers and spacers are respectively clamped at the spacer holes and the spacer block holes between two adjacent stop plates, and tooling distance blocks are dispersedly placed in other areas, then bolts are passed through the spacer block holes and a number of positioning pin holes, and the spacers and spacers are spot welded to fix them, then the channel steel tooling is welded, and the above steps are repeated to obtain a number of fixed reference blanks, then the bolts are removed, and spacers, spacers and a number of tooling distance blocks are clamped between adjacent fixed reference blanks, then bolts are passed through, and the spacers and spacers are spot welded to fix them, then all the spacers and spacers are circumferentially welded, and finally annealing is performed to obtain the stop baffle, thereby completing the production of the stop baffle; in application, the parts are made by grouping, and then they are assembled and welded into a whole to obtain the finished parts, thereby ensuring the production quality of the parts, and no specific processing tooling is required. Therefore, the present invention not only has better product quality, but also has lower cost.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing parts, belonging to the field of machining, and particularly to a method for manufacturing a stop baffle. Background Art

[0002] In the processing of traditional special-shaped parts, the casting structure form is usually adopted for manufacturing. However, the mechanical properties of castings are low, the quality is unstable, and defects such as porosity, slag inclusion, and cracks are easily generated, which affect the product quality, the reliability of the parts is low, and the production cycle is long. At the same time, it depends on specific processing tooling, and the manufacturing cost is relatively high.

[0003] The patent application with the application number 201911379420.4 and the application date of December 27, 2019 discloses a special-shaped part fixture and a method for machining special-shaped parts using this fixture. It includes a first fixture body, which is fixedly connected to the fixed clamp body of a machine tool vise, and two first support protrusions are arranged at intervals on its upper surface; a second fixture body, on whose upper surface there is a concave arc-shaped step, the arc-shaped side surface of the arc-shaped step matches the arc-shaped end of the inclined transmission cover, and two second support protrusions are arranged at intervals on the bottom surface adjacent to the arc-shaped side surface of the arc-shaped step; the side of the second fixture body facing away from the arc-shaped step is fixedly connected to the movable clamp body of the machine tool vise; the arc-shaped step and the fixed clamp body of the machine tool vise are clamped at both ends of the inclined transmission cover; it also discloses a machining method for machining special-shaped parts using this fixture, and this method involves secondary clamping of the inclined transmission cover and precision milling of the surface; although this machining method can perform the machining of special-shaped parts, it still depends on specific processing tooling for clamping to carry out the machining, and there is a problem of relatively high input cost for manufacturing parts.

[0004] Disclosing the information of this background art section is only intended to increase the overall understanding of the present application, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects and problems of poor finished product quality and high cost in the prior art, and provide a method for manufacturing a stop baffle with better finished product quality and lower cost.

[0006] To achieve the above purpose, the technical solution of the present invention is: a method for manufacturing a stop baffle, the stop baffle is in a grid shape, and it includes a number of stop pieces in the shape of 丆, as well as spacer rings and spacer blocks clamped between two adjacent stop pieces. The stop pieces are provided with spacer ring holes, spacer block holes, and a number of positioning pin holes;

[0007] The manufacturing method includes the following steps:

[0008] Step 1: clamp spacers at the spacer holes between a plurality of adjacent stoppers, clamp spacers at the spacer holes, and disperse a plurality of tooling distance blocks in other areas. Then, correct the misalignment between the adjacent stoppers so that their projections coincide, thereby obtaining a reference blank.

[0009] Step 2: Insert bolts through the spacer holes and several positioning pin holes of the reference blank, tighten and secure them, and then spot weld the spacer ring and the spacer blocks;

[0010] Step 3: Welding a channel steel fixture to the side wall of the reference blank so that the channel steel fixture is fixedly connected to the plurality of stoppers to obtain a fixed reference blank;

[0011] Step 4: Repeat steps 1 to 3 to obtain several fixed reference blanks;

[0012] Step 5: Remove the bolts on several fixed reference blanks, and place spacers, spacers and several tooling distance blocks between adjacent fixed reference blanks, and then correct the misalignment between the several fixed reference blanks so that their projections coincide.

[0013] Step 6: Insert bolts through the spacer holes and several positioning pin holes and tighten them to connect several fixed reference blanks, and then spot weld the spacer rings and spacers;

[0014] Step 7: Weld along the semicircular arc of the spacer or spacer block, and then weld along the other semicircular arc symmetrically. In this way, all the spacers and spacers are welded in the circumferential direction, so that the spacers, spacers and adjacent stoppers are fixedly connected to obtain a blank stop baffle.

[0015] Step 8: Anneal the blank stop baffle, then remove the channel steel tooling and bolts, and remove all tooling distance blocks to obtain the stop baffle, completing the production of the stop baffle.

[0016] The stop plate is cut by flame cutting, with the blank left with a margin, and then the shape of the stop plate is processed to the finished product size on a machine tool, and spacer holes, spacer block holes and several positioning pin holes are processed. The spacer holes, spacer block holes and several positioning pin holes all have margins left to obtain several different types of stop plates.

[0017] Before step one, the step of determining the position of the stopper is also included: first, the stopper is placed on the work surface, a contour line is drawn along the outer contour of the stopper, and then several equal-height irons are placed within the contour line, and then step one is performed.

[0018] The flatness requirement of the work surface is ≤0.0005mm; the height of the several equal-height irons is 100-120mm, and the height difference between the several equal-height irons is ≤0.1mm.

[0019] In the step 1, the error amount between the correction stoppers refers to:

[0020] Use a protractor to check the circumferential misalignment between any two adjacent stoppers, i.e. the projector overlap. Check one point at intervals of 200mm along the circumference of the stoppers, and the misalignment is required to be ≤0.5mm.

[0021] The height difference between the several tooling distance blocks is 0.12-0.15 mm.

[0022] In the step 3, the requirements for welding the channel steel fixture are: the edge of the channel steel fixture in contact with the stopper is fully welded, and the weld height is 10-15 mm.

[0023] In the step eight, the annealing treatment is to place the blank stop baffle in an annealing furnace for stress relief annealing treatment at an annealing temperature of 570-590° C. for 6-8 hours.

[0024] After step eight, the step of calibrating the stop baffle is also included: checking the inner opening size between two adjacent stop plates, which is required to be ±1mm, and requiring that when the stop baffle is placed vertically, the verticality of the stop baffle in the circumferential direction is ≤2mm; if it does not meet the requirements, flame correction is performed.

[0025] After the correction, the step of machining and marking is also included: the machining allowance of the spacer hole is confirmed by marking, and if there is a machining allowance, the spacer hole is machined to the forming size.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. In a method for manufacturing a stop baffle of the present invention, first, spacers and spacers are respectively clamped at the spacer holes and spacer block holes between a plurality of adjacent stop plates, and a plurality of tooling distance blocks are dispersedly placed in other areas to obtain a reference blank, and then bolts are passed through the spacer holes and a plurality of positioning pin holes, and the spacers and spacers are spot welded to fix them, and then the channel steel tooling is welded, and the above steps are repeated to obtain a plurality of fixed reference blanks, and then the bolts are removed, and spacers, spacers and a plurality of tooling distance blocks are clamped between adjacent fixed reference blanks, and then bolts are passed through the spacer holes and a plurality of positioning pin holes, and the spacers and spacers are spot welded. Fix, then weld all the spacers and spacers circumferentially to obtain a blank stop baffle, finally anneal the blank stop baffle, remove the channel steel tooling and bolts, obtain the stop baffle, and complete the production of the stop baffle; in the application of this design, by splitting the parts and grouping them to produce several fixed reference blanks, and then assembling and welding them into a whole and annealing them, the finished parts are obtained. The mechanical properties of the welded parts are higher than those of traditional castings, and they are not easily deformed, which makes it easy to control the tolerance of the parts. The quality of the product is high, and no special processing tooling is required, which is conducive to controlling the input cost. Therefore, the present invention not only has a better finished product quality, but also has a lower cost.

[0028] 2. In a method for manufacturing a stop baffle of the present invention, spacers and spacers are respectively clamped at the spacer holes and spacer block holes between two adjacent stop plates, and a number of tooling distance blocks are dispersed in other areas. Bolts are then passed through the spacer holes and the number of positioning pin holes, and channel steel tooling is welded. In application, the spacers and spacers are structural components of the stop baffle itself, but they are concentrated on one side. In subsequent processing, other areas of the stop plate are prone to deformation. Therefore, tooling distance blocks are clamped in other areas and fastened with bolts. At the same time, channel steel tooling is welded, which reduces the deformation of the stop plate to both sides in subsequent processing steps, improves the accuracy of the stop baffle, and ensures the quality of the finished part. In addition, the bolts and channel steel tooling are common parts in manufacturing and do not need to be specially customized. After processing is completed, they can also be reused, reducing the manufacturing cost. Therefore, the present invention not only has better product quality but also lower cost.

[0029] 3. In a method for manufacturing a stop baffle according to the present invention, when welding the spacer ring and the spacer block, spot welding is first employed to secure them. The spacer ring or spacer block is then fully welded along a semicircular arc, followed by symmetrical welding along the other semicircular arc. This process continues until all spacers and spacers are fully welded circumferentially. In practice, the weld connection is excellent, and the segmented welding significantly reduces deformation during welding, improving component quality. Consequently, the finished product of the present invention is of superior quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the method steps of the present invention.

[0031] Figure 2 It is a structural schematic diagram of the stop baffle in the present invention.

[0032] Figure 3 yes Figure 2 Schematic diagram of the cross section along line AA.

[0033] Figure 4 yes Figure 2 Schematic diagram of the cross section along the BB line.

[0034] Figure 5 It is a structural schematic diagram of the reference blank in the present invention.

[0035] Figure 6 It is a front view of the relative positions of the channel steel tooling and the reference blank in the present invention.

[0036] Figure 7 It is a side view of the relative positions of the channel steel tooling and the reference blank in the present invention.

[0037] Figure 8 It is a structural schematic diagram of the blank stop baffle in the present invention.

[0038] Figure 9 It is a schematic diagram of the welding direction of the spacer ring and the spacer block in the present invention.

[0039] Figure 10 It is a schematic diagram of the relative positions of the stopper and the iso-high-speed rail in the present invention.

[0040] Figure 11 It is a schematic diagram of the relative positions of the stopper and the tooling distance block in the present invention.

[0041] Figure 12 Schematic diagram of the structure of the differential stopper in Example 2.

[0042] In the figure: stop plate 1, equal height iron 11, spacer 2, spacer hole 21, spacer block 3, spacer block hole 31, tooling distance block 4, positioning pin hole 41, reference blank 5, bolt 6, channel steel tooling 7, fixed reference blank 8, blank stop baffle 9. DETAILED DESCRIPTION

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] See also Figure 1 — Figure 11 A method for manufacturing a stop baffle, wherein the stop baffle is in a grid shape and includes a plurality of N-shaped stop pieces 1 and spacers 2 and spacers 3 sandwiched between two adjacent stop pieces 1. The stop pieces 1 are provided with spacer holes 21, spacer holes 31, and a plurality of positioning pin holes 4.

[0045] The production method comprises the following steps:

[0046] Step 1: Install spacers 2 at the spacer holes 21 between a plurality of adjacent stoppers 1, install spacers 3 at the spacer holes 31, and disperse a plurality of tooling distance blocks 4 in other areas. Then, correct the misalignment between the adjacent stoppers 1 so that their projections coincide, thereby obtaining a reference blank 5.

[0047] Step 2: Insert bolts 6 through the spacer holes 31 and the plurality of positioning pin holes 4 of the reference blank 5, tighten and secure them, and then spot weld the spacer ring 2 and the spacer block 3;

[0048] Step 3: Weld the channel steel fixture 7 to the side wall of the reference blank 5 so that the channel steel fixture 7 is fixedly connected to the plurality of stoppers 1 to obtain a fixed reference blank 8;

[0049] Step 4: Repeat steps 1 to 3 to obtain a number of fixed reference blanks 8;

[0050] Step 5: Remove the bolts 6 on several fixed reference blanks 8, and place spacers 2, spacers 3 and several tooling distance blocks 4 between adjacent fixed reference blanks 8, and then correct the misalignment between the several fixed reference blanks 8 so that their projections coincide;

[0051] Step 6: Insert bolts 6 through the spacer hole 31 and the plurality of positioning pin holes 4, and tighten them to connect the plurality of fixed reference blanks 8, and then spot weld the spacer ring 2 and the spacer block 3;

[0052] Step 7: Weld along the semicircular arc of the spacer 2 or the spacer block 3, and then symmetrically weld along the other semicircular arc. In this way, all the spacers 2 and spacers 3 are welded in the circumferential direction, so that the spacers 2 and spacers 3 are fixedly connected to the adjacent stopper 1, and the blank stopper plate 9 is obtained;

[0053] Step eight: anneal the blank stop baffle 9, then remove the channel steel tooling 7 and bolts 6, and remove all tooling distance blocks 4 to obtain the stop baffle, completing the production of the stop baffle.

[0054] The stopper 1 is cut by flame cutting, with a margin left for the blank, and then the shape of the stopper 1 is processed on a machine tool to the finished size, and the spacer hole 21, the spacer block hole 31 and several positioning pin holes 4 are processed. The spacer hole 21, the spacer block hole 31 and several positioning pin holes 4 all have margins left to obtain several shaped stoppers 1.

[0055] Before step one, the step of determining the position of the stopper 1 is also included: first, the stopper 1 is placed on the work surface, a contour line is drawn along the outer contour of the stopper 1, and then a number of equal-height irons 11 are placed within the contour line, and then step one is performed.

[0056] The flatness requirement of the work surface is ≤0.0005mm; the height of the several equal-height irons 11 is 100-120mm, and the height difference between the several equal-height irons 11 is ≤0.1mm.

[0057] In the step 1, the error amount between the correction stoppers 1 is:

[0058] Use a square to check the circumferential misalignment between two adjacent stoppers 1, that is, the projector overlap. Check one point at an interval of 200mm along the circumference of the stopper 1. The misalignment is required to be ≤0.5mm.

[0059] The height difference between the plurality of tooling distance blocks 4 is 0.12-0.15 mm.

[0060] In the step 3, the requirement for welding the channel steel fixture 7 is: the edge of the channel steel fixture 7 in contact with the stopper 1 is fully welded, and the welding height is 10-15 mm.

[0061] In the step eight, the annealing treatment is to place the blank stop baffle 9 in an annealing furnace for stress relief annealing treatment at an annealing temperature of 570-590° C. for 6-8 hours.

[0062] After step eight, the step of calibrating the stop baffle is also included: checking the inner opening size between two adjacent stop plates 1, which is required to be ±1mm, and requiring that when the stop baffle is placed vertically, the verticality of the stop baffle in the circumferential direction is ≤2mm; if it does not meet the requirements, flame correction is performed.

[0063] After the correction, the step of machining and marking is also included: the machining allowance of the spacer hole 31 is confirmed by marking, and if there is a machining allowance, the spacer hole 31 is machined to the forming size.

[0064] The principle of the present invention is described as follows:

[0065] In the present invention, the shape of the channel steel tooling 7 shown in the figure is not a limitation to the channel steel tooling 7, but is a preferred solution based on preventing its deformation during the welding process. It is not the specific tooling referred to in the background technology of the present invention. Other structures that can achieve this effect are applicable to the present invention.

[0066] Example 1:

[0067] See also Figure 1 — Figure 11A method for manufacturing a stop baffle, wherein the stop baffle is in a grid shape and includes a plurality of N-shaped stop pieces 1 and spacers 2 and spacers 3 sandwiched between two adjacent stop pieces 1. The stop pieces 1 are provided with spacer holes 21, spacer holes 31, and a plurality of positioning pin holes 4.

[0068] The production method comprises the following steps:

[0069] Step 1: Install spacers 2 at the spacer holes 21 between two adjacent stoppers 1, install spacers 3 at the spacer holes 31, and disperse several tooling distance blocks 4 in other areas (preferably, the height difference between the tooling distance blocks 4 is 0.12-0.15mm). Then, use a square to check the circumferential misalignment between two adjacent stoppers 1 (preferably, check one point every 200mm along the circumference of the stoppers 1, and the misalignment is required to be ≤0.5mm), that is, the projector coincidence, so that the projections coincide to obtain a reference blank 5;

[0070] Step 2: Insert bolts 6 through the spacer holes 31 and the plurality of positioning pin holes 4 of the reference blank 5 and tighten them, then perform three-point welding to fix the spacer ring 2 and the spacer block 3;

[0071] Step 3: Weld the channel steel fixture 7 to the side wall of the reference blank 5 (preferably, the welding requirement is: the edge of the channel steel fixture 7 in contact with the stopper 1 is fully welded, with a weld height of 10-15 mm), so that the channel steel fixture 7 is fixedly connected to the multiple stoppers 1 to obtain a fixed reference blank 8;

[0072] Step 4: Repeat steps 1 to 3 to obtain a number of fixed reference blanks 8;

[0073] Step 5: Remove the bolts 6 on several fixed reference blanks 8, and place spacers 2, spacers 3 and several tooling distance blocks 4 between adjacent fixed reference blanks 8, and then correct the misalignment between the several fixed reference blanks 8 so that their projections coincide;

[0074] Step 6: Insert bolts 6 through the spacer hole 31 and the plurality of positioning pin holes 4, and tighten them to connect the plurality of fixed reference blanks 8, and then spot weld the spacer ring 2 and the spacer block 3;

[0075] Step 7: Weld along the semicircular arc of the spacer 2 or the spacer block 3, and then symmetrically weld along the other semicircular arc. In this way, all the spacers 2 and spacers 3 are welded in the circumferential direction, so that the spacers 2 and spacers 3 are fixedly connected to the adjacent stopper 1, and the blank stopper plate 9 is obtained;

[0076] Step eight: anneal the blank stop baffle 9 (preferably, the annealing temperature is 570-590°C and the annealing time is 6-8 hours), then remove the channel steel tooling 7 and the bolts 6, and remove all the tooling distance blocks 4 to obtain the stop baffle, thereby completing the production of the stop baffle.

[0077] Example 2:

[0078] The basic content is the same as Example 1, except that:

[0079] The production method comprises the following steps:

[0080] Step 1: First, flame cutting is used to cut steel sheet, leaving an allowance for the blank, and then the shape of the stopper 1 is machined to the finished size on a machine tool, and the spacer hole 21, the spacer block hole 31 and the plurality of positioning pin holes 41 are machined. The spacer hole 21, the spacer block hole 31 and the plurality of positioning pin holes 41 are all left with an allowance, and a plurality of shaped stoppers 1 are obtained;

[0081] Step 2: First, place the stopper 1 on a work surface (preferably, the flatness requirement of the work surface is ≤0.0005mm), draw a contour line along the outer contour of the stopper 1, and then place several equal-height irons 11 within the contour line (preferably, the number of equal-height irons 11 is 8, the height of the several equal-height irons 11 is 100-120mm, and the height difference between the several equal-height irons 11 is ≤0.1mm). Then, lay the stopper 1 flat on the work surface as a reference, so that the stopper 1 is placed stably without the risk of overturning;

[0082] Step 3: Place the spacer 2 at the spacer hole 21 on the top surface of the stopper 1, place the spacer 3 at the spacer hole 31, and place several tooling distance blocks 4 in other areas (preferably, the height difference between the tooling distance blocks 4 and the spacers 2 and 3 is ≤ 0.15mm). Finally, place the stopper 1 again above the spacer 2, spacer 3, and several tooling distance blocks 4, and calibrate the amount of misalignment between it and the stopper 1 below so that their projections coincide.

[0083] Step 4: Place the spacer 2, spacer 3 and several tooling distance blocks 4 on the uppermost stopper 1 again, then place the stopper 1 and adjust the amount of misalignment between it and the lower stopper 1. Repeat several times to obtain several layered reference blanks 5.

[0084] Step 5: Insert bolts 6 through the spacer holes 31 and the plurality of locating pin holes 4 of the reference blank 5 (preferably, the diameter of the bolts 6 is smaller than that of the spacer holes 31 and the locating pin holes 4, with the difference preferably being between 0.2-0.25 mm), and tighten them with nuts at both ends. Then, spot weld each spacer 2 to the spacer 3;

[0085] Step 6: Weld the channel steel fixture 7 to the side wall of the reference blank 5 so that the channel steel fixture 7 is fixedly connected to the plurality of stoppers 1 to obtain a fixed reference blank 8;

[0086] Step 7: Repeat steps 2 to 6, group the parts as needed, and obtain several fixed reference blanks 8;

[0087] Step 8: Remove the bolts 6 on the fixed reference blanks 8, place the fixed reference blanks 8 in sequence, and place spacers 2, spacers 3, and tooling distance blocks 4 between adjacent fixed reference blanks 8. Then, correct the misalignment between the fixed reference blanks 8 so that their projections coincide.

[0088] Step 9: Insert bolts 6 through the spacer holes 31 and the plurality of locating pin holes 4 and tighten them to connect the plurality of fixed reference blanks 8. Then, spot weld the unfixed spacers 2 and spacers 3.

[0089] Step 10: Weld along the semicircular arc of the spacer 2 or the spacer block 3, and then symmetrically weld along the other semicircular arc. In this way, all the spacers 2 and spacers 3 are welded in the circumferential direction, so that the spacers 2 and spacers 3 are fixedly connected to the adjacent stopper 1, and the blank stopper 9 is obtained;

[0090] Step 11: anneal the blank stop baffle 9, then remove the channel steel tooling 7 and bolts 6, and remove all tooling distance blocks 4, then check the inner opening size between the two adjacent stop plates 1 (preferably, the opening size difference is required to be ±1mm, and the verticality of the stop baffle in the circumferential direction is required to be ≤2mm when the stop baffle is placed vertically; if it does not meet the requirements, flame correction is performed), and finally the machining allowance of the spacer hole 31 is confirmed by marking. If there is a machining allowance, the spacer hole 31 is machined to the forming size to obtain the stop baffle, and the production of the stop baffle is completed.

[0091] In application, the shape of the stopper piece 1 in the stopper plate may be slightly different, such as Figure 12 As shown, the spacer hole 31 is missing in the lower left corner, so the spacer 3 may not be placed in this position, but this difference does not affect the manufacturing method.

[0092] Example 3:

[0093] The basic content is the same as Example 2, except that:

[0094] In application, the semicircular arc of the spacer 2 or the spacer block 3 is fully welded, and then the other semicircular arc is symmetrically welded, and the circumference of all the spacers 2 and the spacer blocks 3 is fully welded. Specifically, it means: using the circle diameter as the dividing line, along the upper semicircle of the circumference, the gap is welded from one side to the other side, and then along the lower semicircle of the circumference, the gap is welded from one side to the other side, so that the circumference is fully welded. There is no special restriction on welding the upper semicircle or the lower semicircle first.

[0095] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", etc., are only for reference to the directions of the drawings and are not intended to limit the scope of protection of the present disclosure. The shapes and sizes of the components in the drawings do not reflect the actual size and proportion, but only illustrate the contents of the embodiments of the present disclosure.

[0096] In addition, unless specifically described or steps must occur in sequence, the order of the above steps is not limited to the above list and can be changed or rearranged according to the required design. Moreover, the above embodiments can be mixed and matched with each other or with other embodiments based on design and reliability considerations, that is, the technical features in different embodiments can be freely combined to form more embodiments.

[0097] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A method for manufacturing a stop baffle, characterized in that: The stop baffle is in a grid shape and includes several L-shaped stop pieces (1), spacer rings (2) and spacer blocks (3) clamped between two adjacent stop pieces (1). The stop pieces (1) are provided with spacer ring holes (21), spacer block holes (31) and several positioning pin holes (41). The manufacturing method includes the following steps: Step 1: Clamp a spacer ring (2) at the spacer ring hole (21) between two adjacent stop pieces (1), clamp a spacer block (3) at the spacer block hole (31), and disperse and place several tooling distance blocks (4) in other areas. Then, correct the misalignment between two adjacent stop pieces (1) so that their projections coincide to obtain a reference blank (5). Step 2: Pass bolts (6) through the spacer block holes (31) and several positioning pin holes (41) of the reference blank (5) and lock them. Then, perform spot welding on the spacer rings (2) and spacer blocks (3) for fixation. Step 3: Weld a channel steel tooling (7) on the side wall of the reference blank (5) so that the channel steel tooling (7) is fixedly connected to multiple stop pieces (1) to obtain a fixed reference blank (8). Step 4: Repeat Steps 1 to 3 to obtain several fixed reference blanks (8). Step 5: Remove the bolts (6) from several fixed reference blanks (8), clamp and place spacer rings (2), spacer blocks (3) and several tooling distance blocks (4) between adjacent fixed reference blanks (8). Then, correct the misalignment between several fixed reference blanks (8) so that their projections coincide. Step 6: Pass bolts (6) through the spacer block holes (31) and several positioning pin holes (41) and lock them to connect several fixed reference blanks (8). Subsequently, perform spot welding on the spacer rings (2) and spacer blocks (3) for fixation. Step 7: Weld full along the semi-circular arc direction of the spacer ring (2) or spacer block (3), and then symmetrically weld full along the other semi-circular arc direction. In this way, weld full the circumferences of all spacer rings (2) and spacer blocks (3) to fixedly connect the spacer rings (2), spacer blocks (3) and the adjacent stop pieces (1) to obtain a blank stop baffle (9). Step 8: Perform annealing treatment on the blank stop baffle (9), then remove the channel steel tooling (7) and bolts (6), and remove all tooling distance blocks (4) to obtain the stop baffle, completing the manufacturing of the stop baffle.

2. The manufacturing method of a stop baffle according to claim 1, wherein: The stop pieces (1) are cut to size by flame cutting, leaving a margin for the blank. Then, the outer shape of the stop pieces (1) is machined on a machine tool to the finished product size, and the spacer ring holes (21), spacer block holes (31) and several positioning pin holes (41) are machined, and a margin is left for the spacer ring holes (21), spacer block holes (31) and several positioning pin holes (41) to obtain several L-shaped stop pieces (1).

3. The manufacturing method of a stop baffle according to claim 2, wherein: Before step one, the method further includes the step of determining the position of the stopper (1): firstly, placing the stopper (1) on a work surface, drawing a contour line along the outer contour of the stopper (1), and then placing a number of equal-height irons (11) within the contour line, and then proceeding to step one.

4. The method for manufacturing a stop baffle according to claim 3, characterized in that: The flatness requirement of the work table is ≤0.0005mm; the height of the plurality of equal-height irons (11) is 100-120mm, and the height difference between the plurality of equal-height irons (11) is ≤0.1mm.

5. The method for manufacturing a stop baffle according to claim 4, characterized in that: In the step 1, correcting the error between two adjacent stoppers (1) means: Use a square to check the circumferential misalignment between two adjacent stoppers (1), that is, the projector overlap, along the circumference of the stopper (1), check one point at an interval of 200mm, and require the misalignment to be ≤0.5mm.

6. A method for manufacturing a stop baffle according to any one of claims 1 to 5, characterized in that: The height difference between the plurality of tooling distance blocks (4) is 0.12-0.15 mm.

7. A method for manufacturing a stop baffle according to any one of claims 1 to 5, characterized in that: In the step 3, the requirements for welding the channel steel fixture (7) are as follows: the edges of the channel steel fixture (7) in contact with the stopper (1) are fully welded, with a weld height of 10-15 mm.

8. A method for manufacturing a stop baffle according to any one of claims 1 to 5, characterized in that: In the step eight, the annealing treatment is to place the blank stop baffle (9) in an annealing furnace for stress relief annealing treatment at an annealing temperature of 570-590° C. for 6-8 hours.

9. The method for manufacturing a stop baffle according to claim 8, characterized in that: After step eight, the step of calibrating the stop baffle is also included: checking the inner opening size between two adjacent stop pieces (1), which is required to be ±1mm, and requiring that when the stop baffle is placed vertically, the verticality of the stop baffle in the circumferential direction is ≤2mm; if it does not meet the requirements, flame calibration is performed.

10. The method for manufacturing a stop baffle according to claim 9, characterized in that: After the correction, the step of machining and marking is also included: the machining allowance of the spacer hole (31) is confirmed by marking, and if there is a machining allowance, the spacer hole (31) is machined to the forming size.

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