Method of manufacturing a housing structure

Abstract

The present disclosure provides a method for manufacturing a shell structure, belonging to the technical field of mechanical processing. The method comprises the following steps: providing a plurality of first blank parts, at least one second blank part and a third blank part; welding the first blank parts, the second blank part and the third blank part together to obtain a welded part; machining the third blank part, the second blank part and the first blank part in the welded part, so that the first blank part has the same structure as the corresponding plate part, the third blank part forms a plurality of parts which have the same structure as the plurality of second arc-shaped parts and one-to-one correspondence, and the second blank part has the same structure as the corresponding first arc-shaped part; and finishing the inner wall and the outer surface of each part in the welded part to obtain the shell structure. The present disclosure can improve the machining precision of the shell structure.

Description

Technical Field

[0001] This disclosure belongs to the field of mechanical processing and manufacturing technology, and specifically relates to a method for manufacturing a shell structure component. Background Technology

[0002] A housing structure is a hollow workpiece, generally used to hold items or mate with other components. For example, a housing structure is used to supply lubricating oil to the shaft in a shaft-type oil distributor. The housing structure mates with the shaft.

[0003] In related technologies, shell structural components are manufactured in the following way: first, the blanks corresponding to each part of the shell are processed, then the blanks of each part are welded together, and the welded parts are precision machined to obtain the shell structural components.

[0004] However, because shell structural components need to interact with other structural components during use, the accuracy requirements for each dimension of the shell structural components are relatively high. If the component is curved or similar, directly machining the blank and then welding it will result in significant deformation due to the curved structure of the blank, leading to lower dimensional accuracy of the machined shell structure. Summary of the Invention

[0005] This disclosure provides a method for manufacturing a shell structure component, which can improve the machining accuracy of the shell structure component. The technical solution is as follows:

[0006] This disclosure provides a method for manufacturing a shell structure component. The shell structure component includes multiple plates and multiple arc-shaped components. The multiple arc-shaped components include at least one first arc-shaped component and multiple second arc-shaped components of equal diameter and coaxially arranged. The manufacturing method includes: providing multiple first blanks, at least one second blank, and one third blank. The multiple first blanks correspond one-to-one with the multiple plates, and the first blank is a blank for the corresponding plate. The at least one second blank corresponds one-to-one with the at least one first arc-shaped component, and the second blank includes a blank body and a support body. The blank body is a blank for the first arc-shaped component corresponding to the second blank, and the support body... Connecting the two ends of the blank body in the arc length direction, the third blank is a semi-cylinder, and the inner diameter of the semi-cylinder is smaller than the inner diameter of the second arc-shaped part, and the outer diameter of the semi-cylinder is not smaller than the outer diameter of the second arc-shaped part; the first blank, the second blank, and the third blank are welded together to obtain a welded part; the welded part is machined so that the first blank has the same structure as the corresponding plate part, so that the third blank forms multiple components with the same structure as the multiple second arc-shaped parts and corresponding to each other, and so that the second blank has the same structure as the corresponding first arc-shaped part; the inner wall and outer surface of each component in the welded part are precision machined to obtain the shell structure component.

[0007] In another implementation of this disclosure, providing at least one second blank includes: drawing the outline of the first arc-shaped part on a steel plate according to the processing dimensions of the first arc-shaped part corresponding to the second blank; drawing a strip outline on one side of the inner arc surface of the outline of the first arc-shaped part, wherein the two ends of the strip outline are respectively connected to the two ends of the arc length direction of the outline of the first arc-shaped part; and cutting the steel plate along the outline of the first arc-shaped part and the strip outline to obtain the second blank.

[0008] In another implementation of this disclosure, providing a third blank includes: rolling a steel plate into an annular structure according to the processing dimensions of the second arc-shaped part, and welding the butt joints of the annular structure together, wherein the radius of the annular structure is the radius of the semi-cylinder; and cutting the annular structure along the axial section to obtain the semi-cylinder.

[0009] In another implementation of this disclosure, providing a plurality of first blanks includes: drawing the outer contour lines of each of the plates on a steel plate according to the processing dimensions of the plates corresponding to the first blanks; and cutting the steel plate along the outer contour lines to obtain a plurality of first blanks.

[0010] In another implementation of this disclosure, the plurality of first blanks include a first thrust panel blank, a second thrust panel blank, and two support plate blanks; the at least one second blank includes a first arc-shaped end plate blank and a second arc-shaped end plate blank; welding the first blanks, the second blanks, and the third blanks together to obtain a welded part includes: assembling the two support plate blanks, the first thrust panel blank, the second thrust panel blank, the first arc-shaped end plate blank, the second arc-shaped end plate blank, and the semi-cylinder together, such that the first arc-shaped end plate blank and the second arc-shaped end plate blank are coaxial and located on the support plate. On the same plate surface of the blank, the first thrust plate blank and the second thrust plate blank are parallel to each other, and one plate surface of the first thrust plate blank is flush with the two end surfaces of the first arc-shaped end plate blank in the arc length direction, and one plate surface of the second thrust plate blank is flush with the two end surfaces of the second arc-shaped end plate blank in the arc length direction. The semi-cylinder is located between the first thrust plate blank and the second thrust plate blank, and is coaxial with the first arc-shaped end plate blank. The first arc-shaped end plate blank, the second arc-shaped end plate blank, the support plate blank, the first thrust plate blank, the second thrust plate blank, and the semi-cylinder are welded together.

[0011] In another implementation of this disclosure, welding the first arc-shaped end plate blank, the second arc-shaped end plate blank, the support plate blank, the first thrust panel blank, the second thrust panel blank, and the semi-cylinder together includes: placing an anti-deformation device between the first thrust panel blank and the second thrust panel blank. The anti-deformation device includes a top seat, a cylindrical support member, and a thrust panel support member. The top seat is connected to a plate surface of the support plate blank away from the first arc-shaped end plate blank. One end of the cylindrical support member is connected to the top seat, and the other end of the cylindrical support member abuts against the inner wall of the semi-cylinder. The length direction is the radial direction of the semi-cylinder. The thrust panel support is connected to the cylinder support and is located on the side of the semi-cylinder facing the support plate blank. The two ends of the thrust panel support are in contact with the first thrust panel blank and the second thrust panel blank, respectively. One of the support plate blanks is welded to the first arc-shaped end plate blank and the first thrust panel blank, and the other support plate blank is welded to the second arc-shaped end plate blank and the second thrust panel blank, respectively. The semi-cylinder is welded to the first thrust panel blank and the second thrust panel blank, respectively. The anti-deformation device is removed.

[0012] In another implementation of this disclosure, the machining of the welded part includes: drawing the outer contour line of the second arc-shaped part on the semi-cylinder; drawing the through hole contour line on the first thrust panel; cutting along the outer contour line of the second arc-shaped part and the through hole contour line; and removing the support body from the second blank.

[0013] In another implementation of this disclosure, the plate further includes two side sealing plates and a bottom plate; before the finishing of the welded component, the manufacturing method further includes: assembling the two side sealing plate blanks and the bottom plate blank into the welded component, such that the bottom plate blank is opposite to the support plate blank, the two side sealing plate blanks are respectively located between the first thrust panel blank and the second thrust panel blank, and between the bottom plate blank and the support plate blank; and welding the bottom plate blank and the two side sealing plate blanks together with the welded component.

[0014] In another implementation of this disclosure, the manufacturing method further includes: performing ultrasonic testing on all welds in the welded component.

[0015] In another implementation of this disclosure, the manufacturing method further includes: stress-relieving annealing of the welded base plate, the two side sealing plates, and the welded components.

[0016] The beneficial effects of the technical solutions provided in this disclosure are:

[0017] When the manufacturing method provided in this embodiment is used to process the shell structure, the manufacturing method first provides a first blank, a second blank, and a third blank. The second blank includes a blank body corresponding to the first arc-shaped part and a support body. In this way, the support body can support the blank body in the subsequent assembly and welding process, reduce the welding deformation of the blank body, and improve the accuracy of the shell structure.

[0018] Moreover, the third blank provided is a semi-cylinder corresponding to the inner diameter of the second arc-shaped part. This allows the semi-cylinder to be welded to other plates separately, avoiding the need to weld multiple second arc-shaped parts to plates one by one, thus improving welding efficiency and welding quality. At the same time, it can also improve the assembly efficiency of multiple second arc-shaped parts.

[0019] In other words, by using the above method and incorporating a support structure in the second blank, welding deformation can be reduced. Furthermore, by employing a semi-cylindrical structure as the blank for multiple second arc-shaped parts, the assembly and welding efficiency and welding quality of the second blank can be greatly improved, ultimately enhancing the machining accuracy of the shell blank. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a shell structure provided in an embodiment of the present disclosure;

[0022] Figure 2 for Figure 1 The left view;

[0023] Figure 3 for Figure 1 The right view;

[0024] Figure 4 A flowchart illustrating a method for manufacturing a shell structure according to an embodiment of this disclosure;

[0025] Figure 5 A flowchart illustrating another method for manufacturing a shell structure provided in this embodiment of the disclosure;

[0026] Figure 6 A schematic diagram illustrating the manufacturing process of the first thrust panel blank provided in an embodiment of this disclosure;

[0027] Figure 7 A schematic diagram illustrating the manufacturing process of the first arc-shaped end plate blank provided in this embodiment of the disclosure;

[0028] Figure 8 An assembly diagram of the support plate blank provided in the embodiments of this disclosure;

[0029] Figure 9 An assembly diagram of the welded components provided in the embodiments of this disclosure;

[0030] Figure 10 An assembly diagram showing the anti-deformation device provided in a welded component according to an embodiment of this disclosure;

[0031] Figure 11 for Figure 10 A schematic diagram along direction D;

[0032] Figure 12 This is a schematic diagram of the structure of the machined semi-cylinder in the welded component provided in the embodiments of this disclosure;

[0033] Figure 13 This is a structural schematic diagram of the welding base plate blank provided in an embodiment of this disclosure.

[0034] The symbols in the diagram represent the following meanings:

[0035] 100. Receiving cavity; 101. First thrust panel; 102. Second thrust panel; 103. Support plate; 104. Side sealing plate; 105. Bottom plate; 106. Rib plate; 1010. Through hole;

[0036] 101a, First thrust panel blank; 102a, Second thrust panel blank; 103a, Support plate blank; 104a, Side sealing plate blank; 105a, Bottom plate blank; 106a, Rib plate blank;

[0037] 201. First arc-shaped end plate; 202. Second arc-shaped end plate;

[0038] 201a, First arc-shaped end plate blank; 201b, Connecting rod; 202a, Second arc-shaped end plate blank;

[0039] 301, Arc-shaped rib; 301a, Semi-cylinder; 301b, Arc-shaped rib blank;

[0040] 401. Top seat; 402. Cylinder support; 403. Thrust panel support. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0042] Figure 1 This is a schematic diagram of a shell structure provided in an embodiment of the present disclosure. Figure 2 for Figure 1 Left view, Figure 3 for Figure 1 The right view. Combined with... Figure 1-3 The shell structure includes a first thrust panel 101, a second thrust panel 102, two support plates 103, two side sealing plates 104, a bottom plate 105, multiple stiffeners 106, a first arc-shaped end plate 201, a second arc-shaped end plate 202, and multiple arc-shaped ribs 301. The first thrust panel 101, the second thrust panel 102, the two support plates 103, the two side sealing plates 104, the bottom plate 105, and the multiple stiffeners 106 are all plate components, while the first arc-shaped end plate 201, the second arc-shaped end plate 202, and the multiple arc-shaped ribs 301 are all arc-shaped components.

[0043] The first thrust panel 101 and the second thrust panel 102 are arranged opposite to each other, and the two side sealing plates 104 are arranged opposite to each other and welded between the first thrust panel 101 and the second thrust panel 102. The base plate 105 is located on the same side of the first thrust panel 101, the second thrust panel 102 and the two side sealing plates 104, and is welded to the first thrust panel 101, the second thrust panel 102 and the two side sealing plates 104 respectively, together defining the receiving cavity 100.

[0044] Multiple arc-shaped ribs 301 are coaxially spaced within the accommodating cavity 100, and each arc-shaped rib 301 is welded to two side sealing plates 104 at both ends along its arc length. The first arc-shaped end plate 201 and the second arc-shaped end plate 202 are both located outside the accommodating cavity 100, with the first arc-shaped end plate 201 welded to the side of the first thrust panel 101 away from the bottom plate 105, and the second arc-shaped end plate 202 welded to the side of the second thrust panel 102 away from the bottom plate 105. Two support plates 103 are arranged opposite each other at intervals, with one support plate 103 welded to the top of one side sealing plate 104, the first arc-shaped end plate 201, and the second arc-shaped end plate 202 away from the bottom plate 105. The other support plate 103 is welded to the top of the other side sealing plate 104, the first arc-shaped end plate 201, and the second arc-shaped end plate 202 away from the bottom plate 105. A portion of the plurality of stiffening plates 106 is welded to the connection between the first arc-shaped end plate 201 and the first thrust panel 101, and another portion of the plurality of stiffening plates 106 is welded to the connection between the second arc-shaped end plate 202 and the second thrust panel 102.

[0045] The inner arc surface of the first arc-shaped end plate 201 is used to mate with the shaft.

[0046] After welding, ultrasonic testing is required for each weld. According to the standard NB / T47013.3-2015 "Non-destructive Testing of Pressure Equipment Part 3: Ultrasonic Testing", the probe sliding range during ultrasonic testing of welds is 5 to 6 times the plate thickness. To ensure that the welds between the first thrust plate 101 and the first arc-shaped end plate 201, the second thrust plate 102 and the second arc-shaped end plate 202, and the arc-shaped rib 301 and the first and second thrust plates 101 and 102 can all be tested using ultrasonic testing, and since these welds are not all located on the outer surface of the shell structure, through holes are provided in both the first thrust plate and the base plate. This allows for inspection of the welds inside the shell structure through these through holes.

[0047] The thickness of each of the above components is 160mm.

[0048] This disclosure provides a method for manufacturing a shell structure component, which is used to process the above-mentioned shell structure component.

[0049] Figure 4 A flowchart illustrating a method for manufacturing a shell structure according to an embodiment of this disclosure, in conjunction with... Figure 4 The production method includes:

[0050] S401: Provide a plurality of first blanks, at least one second blank, and a third blank.

[0051] Multiple first blanks correspond one-to-one with multiple plates, and the first blank is the blank of the corresponding plate.

[0052] At least one second blank corresponds to at least one first arc-shaped part, and the second blank includes a blank body and a support body. The blank body is the blank of the first arc-shaped part corresponding to the second blank, and the support body is connected between the two ends of the blank body in the arc length direction.

[0053] The third blank is a semi-cylinder, and the inner diameter of the semi-cylinder is smaller than the inner diameter of the second arc-shaped part, while the outer diameter of the semi-cylinder is not smaller than the outer diameter of the second arc-shaped part.

[0054] S402: Weld the first blank, the second blank, and the third blank together to obtain a welded part.

[0055] S403: Machining the welded parts so that the first blank has the same structure as the corresponding plate part, so that the third blank forms multiple parts with the same structure as the multiple second arc-shaped parts and corresponding to each other, and so that the second blank has the same structure as the corresponding first arc-shaped part.

[0056] S404: The inner walls and outer surfaces of each component in the welded parts are precision machined to obtain the shell structure component.

[0057] When the manufacturing method provided in this embodiment is used to process the shell structure, the manufacturing method first provides a first blank, a second blank, and a third blank. The second blank includes a blank body corresponding to the first arc-shaped part and a support body. In this way, the support body can support the blank body in the subsequent assembly and welding process, reduce the welding deformation of the blank body, and improve the accuracy of the shell structure.

[0058] Moreover, the third blank provided is a semi-cylinder corresponding to the inner diameter of the second arc-shaped part. This allows the semi-cylinder to be welded to other plates separately, avoiding the need to weld multiple second arc-shaped parts to plates one by one, thus improving welding efficiency and welding quality. At the same time, it can also improve the assembly efficiency of multiple second arc-shaped parts.

[0059] In other words, by using the above method and incorporating a support structure in the second blank, welding deformation can be reduced. Furthermore, by employing a semi-cylindrical structure as the blank for multiple second arc-shaped parts, the assembly and welding efficiency and welding quality of the second blank can be greatly improved, ultimately enhancing the machining accuracy of the shell blank.

[0060] Figure 5 A flowchart illustrating another method for manufacturing a shell structure provided in this disclosure, in conjunction with... Figure 5 The production method includes:

[0061] S501: Provide a plurality of first blanks, at least one second blank, and a third blank.

[0062] In this embodiment of the disclosure, the plurality of first blanks include a first thrust panel blank 101a, a second thrust panel blank 102a, and two support plate blanks 103a.

[0063] At least one second blank includes a first arc-shaped end plate blank 201a and a second arc-shaped end plate blank 202a.

[0064] Alternatively, S501 is implemented in the following way:

[0065] 5011: Draw the outer contour lines of each plate on the steel plate according to the processing dimensions of the plate corresponding to the first blank.

[0066] 5012: Cut the steel plate along the outer contour line of the plate to obtain the first blank.

[0067] In other words, based on the processing dimensions of each plate in the shell structure, the first thrust panel blank 101a, the second thrust panel blank 102a, and the two support plate blanks 103a are cut from the steel plate respectively.

[0068] The first blank has the same outer contour as the corresponding component. Compared with the corresponding component, the first blank has a through hole in the component but no through hole in the first blank.

[0069] Figure 6 This is a schematic diagram illustrating the manufacturing process of the first thrust panel blank provided in an embodiment of this disclosure, in conjunction with... Figure 6 ,according to Figure 6 The machining dimensions of the first thrust panel 101 in the shell structure on the left side are determined by drawing the outer contour line of the first thrust panel 101 in the steel plate and cutting out the corresponding first thrust panel blank 101a according to the outer contour line of the first thrust panel 101.

[0070] In order to reduce the welding deformation of the first thrust panel and other components in the subsequent welding process, the corresponding through holes were not cut into shape when the blank part 101a of the first thrust panel was cut and prepared.

[0071] 5013: Draw the outline of the first arc-shaped part on the steel plate according to the processing dimensions of the first arc-shaped part corresponding to the second blank part.

[0072] 5014: Draw a strip outline on one side of the inner arc surface of the first arc-shaped component, with the two ends of the strip outline connected to the two ends of the arc length direction of the first arc-shaped component.

[0073] 5015: Cut the steel plate along the outline of the first arc-shaped part and the outline of the strip to obtain the second blank.

[0074] In other words, the second blank is obtained by retaining an arc-shaped plate and a connecting rod within a steel plate. The two ends of the connecting rod are connected to the two ends of the arc-length direction of the arc-shaped plate, with the arc-shaped plate forming the blank body and the connecting rod serving as the support.

[0075] Figure 7 A schematic diagram illustrating the manufacturing process of the first arc-shaped end plate blank provided in this embodiment of the present disclosure, see [link / reference]. Figure 7 Since the thickness of the first arc-shaped end plate and the second arc-shaped end plate in the shell structure is 160mm, in order to solve the problem of excessive deformation caused by cutting the first arc-shaped end plate and the second arc-shaped end plate, a connecting rod 201b is added in the middle of the second blank when cutting the steel plate.

[0076] In other words, the first arc-shaped end plate blank 201a has an additional connecting rod 201b (i.e., a support body) compared to the first arc-shaped end plate 201. The second arc-shaped end plate blank 202a also has an additional connecting rod structure (i.e., a support body) compared to the second arc-shaped end plate 202. This reduces deformation during the cutting and blanking of the first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a through the connecting rod 201b, and also reduces subsequent welding deformation.

[0077] 5016: Roll the steel plate into a ring structure according to the processing dimensions of the second arc-shaped part, and weld the butt joint of the ring structure together. The radius of the ring structure is the radius of the semi-cylinder.

[0078] 5017: Cut the annular structure along the axial section to obtain a semi-cylinder.

[0079] In this embodiment, a plate rolling machine is used to roll the steel plate to the diameter required by the drawing, and then the butt joints are welded together. The weld at the butt joint is subjected to 100% ultrasonic testing and 100% dye penetrant testing. After passing the tests, the annular structure is cut along the axial section to obtain a semi-cylinder.

[0080] S502: Assemble two support plate blanks 103a, a first thrust panel blank 101a, a second thrust panel blank 102a, a first arc-shaped end plate blank 201a, a second arc-shaped end plate blank 202a, and a semi-cylinder 301a together, such that the first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a are coaxial and located on the same plate surface of the support plate blanks, and the first thrust panel blank 101a and the second thrust panel blank 301a are also assembled together. The blanks 102a are parallel to each other, and one plate surface of the first thrust panel blank 101a is flush with the two end surfaces of the first arc-shaped end plate blank 201a in the arc length direction. One plate surface of the second thrust panel blank 102a is flush with the two end surfaces of the second arc-shaped end plate blank 202a in the arc length direction. The semi-cylinder 301a is located between the first thrust panel blank 101a and the second thrust panel blank 102a, and is coaxial with the first arc-shaped end plate blank 201a.

[0081] Alternatively, S502 can be implemented through the following steps:

[0082] 5021: Two support plate blanks 103a are spot-welded at intervals on the assembly platform, and the two support plate blanks 103 are coplanar.

[0083] Figure 8 This is an assembly diagram of the support plate blank provided in the embodiments of this disclosure, as shown below. Figure 8 As shown, first, a cross center line is drawn on the assembly platform, and then the outer contour line of the support plate blank 103a is drawn according to the dimensions, requiring a deviation of ≤1mm. Two support plate blanks 103a are assembled according to the drawn outer contour line and spot-welded to the assembly platform. Spot-welding the support plate blanks 103a to the assembly platform not only secures them but also facilitates the removal of the shell structure from the assembly platform after the shell structure is obtained.

[0084] The support plate 103 has a U-shaped structure, and the support plate blank 103a also has a U-shaped structure. The two support plate blanks 103a are symmetrically arranged on both sides of the center of the cross center line, and the U-shaped cavities of the support plate blanks 103a are arranged opposite each other.

[0085] 5022: The first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a are coaxially and spaced apart by spot welding to the same side of the plate surface of the two support plate blanks 103a. The arrangement direction of the first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a is perpendicular to the arrangement direction of the two support plate blanks 103a.

[0086] 5023: The first thrust panel blank 101a and the second thrust panel blank 102a are arranged in parallel, such that one plate surface of the first thrust panel blank 101a is flush with the two end surfaces of the first arc-shaped end plate blank 201a in the arc length direction, and one plate surface of the first thrust panel blank 101a is flush with the two end surfaces of the second arc-shaped end plate blank 202a in the arc length direction. The first thrust panel blank 101a is spot welded to the second thrust panel blank 102a and the support plate blank 103a respectively. The second thrust panel blank 102a is spot welded to the second arc-shaped end plate blank 202a and the support plate blank 103a respectively.

[0087] 5024: The two ends of the semi-cylinder 301a are welded and fixed between the first thrust panel blank 101a and the second thrust panel blank 102a, and the semi-cylinder 301a is coaxial with the first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a.

[0088] Figure 9 This is an assembly diagram of the welded parts provided in the embodiments of this disclosure, such as... Figure 9 As shown in the drawing, according to the dimensional requirements, the first arc-shaped end plate blank 201a, the second arc-shaped end plate blank 202a, the first thrust panel blank 101a, the second thrust panel blank 102a, and the semi-cylinder 301a are spot-welded and fixed to the same side of the support plate blank 103a. After assembly, as shown... Figure 9 As shown.

[0089] S503: Weld the first arc-shaped end plate blank 201a, the second arc-shaped end plate blank 202a, the support plate blank 103a, the first thrust panel blank 101a, the second thrust panel blank 102a, and the semi-cylinder 301a together.

[0090] Alternatively, S503 can be implemented through the following steps:

[0091] 5031: An anti-deformation device is placed between the first thrust panel blank 101a and the second thrust panel blank 102a.

[0092] Figure 10 This is an assembly diagram illustrating the anti-deformation device in a welded component provided in an embodiment of this disclosure. Figure 11 for Figure 10 A schematic diagram along direction D, as shown below. Figure 10 and Figure 11As shown, the anti-deformation device includes a top seat 401, a cylindrical support 402, and a thrust panel support 403. The top seat 401 is connected to a plate surface of the support plate blank 103a away from the first arc-shaped end plate blank 201a. One end of the cylindrical support 402 is connected to the top seat 401, and the other end of the cylindrical support 402 abuts against the inner wall of the semi-cylinder 301a. The length direction of the cylindrical support 402 is the radial direction of the semi-cylinder 301a. The thrust panel support 403 is connected to the cylindrical support 402 and is located on the side of the semi-cylinder 301a facing the support plate blank 103a. The two ends of the thrust panel support 403 are in contact with the first thrust panel blank 101a and the second thrust panel blank 102a, respectively.

[0093] The anti-deformation device is lifted and placed inside the shell structure. The top seat 401 of the anti-deformation device rests on the support plate blank 103a, and the cylindrical support 402 is in contact with the semi-cylinder 301a. The thrust panel support 403 is located in the shell structure and is in contact with the first thrust panel blank 101a and the second thrust panel blank 102a, respectively. In this way, the thrust panel support 403 and the cylindrical support 402 can support the first thrust panel blank 101a, the second thrust panel blank 102a, and the semi-cylinder 301a, respectively, to reduce deformation.

[0094] It is important to note that when arranging the anti-deformation device, the welding operation space must be considered to avoid affecting the welding of the various components. After adjusting the position of the anti-deformation device, the top seat 401 is welded to the support plate blank 103a, and the weld is required to be a continuous weld with a weld height of 8-10mm. The remaining parts of the anti-deformation device are not welded to other components to facilitate subsequent disassembly.

[0095] 5032: Weld one of the support plate blanks 103a to the first arc-shaped end plate blank 201a and the first thrust panel blank 101a respectively, and weld the other support plate blank 103a to the second arc-shaped end plate blank 202a and the second thrust panel blank 102a respectively.

[0096] 5033: Weld the semi-cylinder 301a to the first thrust panel blank 101a and the second thrust panel blank 102a respectively.

[0097] 5034: Remove the anti-deformation device.

[0098] After welding, the anti-deformation device can be removed.

[0099] During welding, the stiffener blank 106a can be welded together.

[0100] S504: Perform ultrasonic testing on all welds in the welded parts.

[0101] Ultrasonic testing can determine whether the weld meets the requirements during the above welding process.

[0102] S505: Machining of welded parts.

[0103] Step S505 may include the following steps:

[0104] 5051: Draw the outer contour line of the second arc-shaped part on the semi-cylinder.

[0105] 5052: Draw the outline of the through hole on the first thrust panel.

[0106] 5053: Cut along the outer contour line of the second arc-shaped part and the contour line of the through hole.

[0107] 5054: Remove the support body from the second blank.

[0108] Figure 12 This is a schematic diagram of the structure of the machined semi-cylinder in the welded component provided in the embodiments of this disclosure, combined with... Figure 12 During machining, the semi-cylinder is cut according to the dimensions of the arc-shaped rib 301, with the cut surface parallel to the cross-section of the semi-cylinder. After cutting, the semi-cylinder 301a is divided into arc-shaped rib blanks 301b corresponding to the arc-shaped rib 301.

[0109] To improve production efficiency, manual flame cutting is used, requiring a 10-15mm allowance on each side.

[0110] During machining, the support body in the second blank can be cut off at the same time. Alternatively, through holes 1010 can be cut into both the first thrust panel blank 101a and the second thrust panel blank 102a.

[0111] S506: The two side sealing plate blanks and the bottom plate blank are respectively assembled in the welded parts, such that the bottom plate blank is located on the side of the first thrust panel and the second thrust panel away from the support plate blank, and is located between the first thrust panel and the second thrust panel, and the two side sealing plate blanks are respectively located between the first thrust panel blank and the second thrust panel blank, and are located between the bottom plate blank and the support plate blank.

[0112] After assembling the base plate blank and side sealing plate blank according to the drawings, it is ready for the next step of welding.

[0113] S507: Weld the base plate blank and the two side sealing plate blanks together with the welded parts.

[0114] Figure 13See the schematic diagram of the structure of the welding base plate blank provided in the embodiments of this disclosure. Figure 13 After assembly, the base plate blank and the side sealing plate blank can be directly welded into the aforementioned welded structure by manual welding, thereby obtaining the shell structure component.

[0115] S508: Stress-relief annealing is performed on the base plate, two side sealing plates, and welded components after welding.

[0116] Stress-relief annealing can release stress in welded parts to reduce deformation.

[0117] S509: Sandblasting and finishing of welded parts after stress-relief annealing.

[0118] Because the cavity structure, composed of the cylinder, first thrust plate, second thrust plate, bottom sealing plate, side plate, and side sealing plate, needs to hold oil during subsequent testing and rust is not allowed, sandblasting is required after the shell structure components are annealed to remove rust from the inner walls of the cavity structure. Afterwards, the outer surface and inner walls of the entire shell structure component are precision machined according to the drawing dimensions to obtain the shell structure component.

[0119] The above description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A method for manufacturing a shell structural component, characterized in that, The shell structure includes multiple plates and multiple arc-shaped components, wherein the multiple arc-shaped components include at least one first arc-shaped component and multiple second arc-shaped components of equal diameter and coaxially arranged, and the manufacturing method includes: The system provides a plurality of first blanks, at least one second blank, and a third blank. The plurality of first blanks correspond one-to-one with the plurality of plates, and the first blank is the blank of the corresponding plate. The at least one second blank corresponds one-to-one with the at least one first arc-shaped piece. The second blank includes a blank body and a support body. The blank body is the blank of the first arc-shaped piece corresponding to the second blank. The support body connects the two ends of the blank body in the arc length direction. The third blank is a semi-cylinder, and the inner diameter of the semi-cylinder is smaller than the inner diameter of the second arc-shaped piece, and the outer diameter of the semi-cylinder is not smaller than the outer diameter of the second arc-shaped piece. The first blank, the second blank, and the third blank are welded together to obtain a welded part; The welded parts are machined so that the first blank part has the same structure as the corresponding plate part, and the third blank part is formed into multiple parts that have the same structure as the multiple second arc-shaped parts and correspond one-to-one, and the second blank part has the same structure as the corresponding first arc-shaped part. The inner walls and outer surfaces of each component in the welded part are precision machined to obtain the shell structure component.

2. The method for manufacturing the shell structure according to claim 1, characterized in that, Providing at least one second blank includes: The outline of the first arc-shaped part is drawn on the steel plate according to the processing dimensions of the first arc-shaped part corresponding to the second blank part; A strip outline is drawn on one side of the inner arc surface of the first arc-shaped component, and the two ends of the strip outline are respectively connected to the two ends of the arc length direction of the first arc-shaped component. The steel plate is cut along the outline of the first arc-shaped part and the outline of the strip to obtain the second blank.

3. The method for manufacturing the shell structure according to claim 1, characterized in that, The provision of a third blank includes: The steel plate is rolled into a ring structure according to the processing dimensions of the second arc-shaped part, and the butt joint of the ring structure is welded together. The radius of the ring structure is the radius of the semi-cylinder. The annular structure is cut along the axial section to obtain the semi-cylinder.

4. The method for manufacturing the shell structure according to claim 1, characterized in that, The provision of a plurality of first blanks includes: According to the processing dimensions of the plate corresponding to the first blank, draw the outer contour lines of each plate on the steel plate; The steel plate is cut along the outer contour line to obtain a plurality of first blanks.

5. The method for manufacturing a shell structure according to any one of claims 1-4, characterized in that, The plurality of first blanks include a first thrust panel blank (101a), a second thrust panel blank (102a), and two support plate blanks (103a), and the at least one second blank includes a first arc-shaped end plate blank (201a) and a second arc-shaped end plate blank (202a). The step of welding the first blank, the second blank, and the third blank together to obtain a welded part includes: The two support plate blanks (103a), the first thrust panel blank (101a), the second thrust panel blank (102a), the first arc-shaped end plate blank (201a), the second arc-shaped end plate blank (202a), and the semi-cylinder (301a) are assembled together such that the first arc-shaped end plate blank (201a) and the second arc-shaped end plate blank (202a) are coaxial and located on the same plate surface of the support plate blank (103a). The first thrust panel blank (101a) and the second thrust panel blank (202a) are also assembled together. The force panel blanks (102a) are parallel to each other, and one plate surface of the first thrust panel blank (101a) is flush with the two end surfaces of the first arc-shaped end plate blank (201a) in the arc length direction. One plate surface of the second thrust panel blank (102a) is flush with the two end surfaces of the second arc-shaped end plate blank (202a) in the arc length direction. The semi-cylinder (301a) is located between the first thrust panel blank (101a) and the second thrust panel blank (102a) and is coaxial with the first arc-shaped end plate blank (201a). The first arc-shaped end plate blank (201a), the second arc-shaped end plate blank (202a), the support plate blank (103a), the first thrust panel blank (101a), the second thrust panel blank (102a), and the semi-cylinder (301a) are welded together.

6. The method for manufacturing the shell structure according to claim 5, characterized in that, The step of welding the first arc-shaped end plate blank (201a), the second arc-shaped end plate blank (202a), the support plate blank (103a), the first thrust panel blank (101a), the second thrust panel blank (102a), and the semi-cylinder (301a) together includes: An anti-deformation device is placed between the first thrust plate blank (101a) and the second thrust plate blank (102a). The anti-deformation device includes a top seat (401), a cylindrical support (402), and a thrust plate support (403). The top seat (401) is connected to a plate surface of the support plate blank (103a) away from the first arc-shaped end plate blank (201a). One end of the cylindrical support (402) is connected to the top seat (401). The other end of the cylinder support (402) abuts against the inner wall of the semi-cylinder (301a). The length direction of the cylinder support (402) is the radial direction of the semi-cylinder (301a). The thrust panel support (403) is connected to the cylinder support (402) and is located on the side of the semi-cylinder (301a) facing the support plate blank (103a). The two ends of the thrust panel support (403) are in contact with the first thrust panel blank (101a) and the second thrust panel blank (102a) respectively. One of the support plate blanks (103a) is welded to the first arc-shaped end plate blank (201a) and the first thrust panel blank (101a) respectively, and the other support plate blank (103a) is welded to the second arc-shaped end plate blank (202a) and the second thrust panel blank (102a) respectively. The semi-cylinder (301a) is welded to the first thrust panel blank (101a) and the second thrust panel blank (102a) respectively; Remove the anti-deformation device.

7. The method for manufacturing the shell structure according to claim 5, characterized in that, The machining of the welded parts includes: Draw the outer contour line of the second arc-shaped component on the semi-cylinder; Draw the outline of the through hole on the first thrust panel blank; Cut along the outer contour line of the second arc-shaped component and the contour line of the through hole; Remove the support from the second blank.

8. The method for manufacturing the shell structure according to claim 5, characterized in that, The plate also includes two side sealing plates and a bottom plate; Before the finishing of the welded part, the manufacturing method further includes: The two side sealing plate blanks and the bottom plate blank are respectively assembled into the welded part, and the bottom plate blank is opposite to the support plate blank. The two side sealing plate blanks are respectively located between the first thrust panel blank and the second thrust panel blank, and between the bottom plate blank and the support plate blank. The base plate blank and the two side sealing plate blanks are welded together with the welding parts.

9. A method for manufacturing a shell structure according to any one of claims 1-4 and 6, characterized in that, The manufacturing method further includes: All welds in the welded components are subjected to ultrasonic testing.

10. The method for manufacturing a shell structure according to claim 8, characterized in that, The manufacturing method further includes: The base plate, the two side sealing plates, and the welded components are subjected to stress-relief annealing after welding.

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