Manufacturing method of shell structural component

Abstract

The invention provides a manufacturing method of a shell structural part, and belongs to the technical field of machining and manufacturing. The manufacturing method comprises the steps that a plurality of first workblank pieces, at least one second workblank piece and a third workblank piece are provided, the first workblank pieces, the second workblank pieces and the third workblank piece are welded together, and a welded piece is obtained; the third blank piece, the second blank piece and the first blank piece in the welding piece are machined, so that the first blank piece and the corresponding plate piece are the same in structure, and the third blank piece forms a plurality of parts which are the same as the second arc-shaped pieces in structure and are in one-to-one correspondence with the second arc-shaped pieces; the structures of the second blank pieces are the same as those of the corresponding first arc-shaped pieces; and the inner wall and the outer surface of each part in the welding part are subjected to finish machining, and the shell structural part is obtained. The machining precision of the shell structural part can be improved.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of machining and manufacturing, and particularly relates to a manufacturing method of a housing structural member. Background Art

[0002] A housing structural member is a workpiece with a hollow interior, generally used for containing items or cooperating with other components, etc. Exemplarily, the housing structural member is used to provide lubricating oil for a rotating shaft in a shaft-type oil distributor. The housing structural member cooperates with the shaft.

[0003] In the related art, the housing structural member is manufactured in the following manner: First, blank parts corresponding to each component of the housing are machined, and then the blank parts of each component are welded together, and the welded parts after welding are finely machined to obtain the housing structural member.

[0004] However, since the housing structural member needs to cooperate with other structural members during use, the accuracy requirements for each dimension in the housing structural member are relatively high. If the component is in an arc shape or the like, directly machining the blank part and then welding will result in a large deformation due to the curved arc structure of the blank part, making the dimensional accuracy of the machined housing structure relatively low. Summary of the Invention

[0005] An embodiment of the present disclosure provides a manufacturing method of a housing structural member, which can improve the machining accuracy of the housing structural member. The technical solution is as follows:

[0006] An embodiment of the present disclosure provides a manufacturing method for a housing structural member. The housing structural member includes a plurality of plate members and a plurality of arc members. The plurality of arc members include at least one first arc member and a plurality of second arc members arranged coaxially with equal diameters. The manufacturing method includes: providing a plurality of first blank members, at least one second blank member, and a third blank member. The plurality of first blank members correspond one-to-one with the plurality of plate members, and the first blank member is the blank member of the corresponding plate member. The at least one second blank member corresponds one-to-one with the at least one first arc member, and the second blank member includes a blank member body and a support body. The blank member body is the blank member of the first arc member corresponding to the second blank member, and the support body is connected between the two ends of the blank member body in the arc length direction. The third blank member is a semi-cylindrical body, and the inner diameter of the semi-cylindrical body is smaller than the inner diameter of the second arc member, and the outer diameter of the semi-cylindrical body is not smaller than the outer diameter of the second arc member; welding the first blank member, the second blank member, and the third blank member together to obtain a welded member; machining the welded member so that the first blank member has the same structure as the corresponding plate member, so that the third blank member forms a plurality of components that have the same structure as and correspond one-to-one with the plurality of second arc members, and so that the second blank member has the same structure as the corresponding first arc member; performing finish machining on the inner walls and outer surfaces of the components in the welded member to obtain the housing structural member.

[0007] In another implementation manner of the present disclosure, the providing of at least one second blank member includes: scribing the contour line of the first arc member on the steel plate according to the processing dimensions of the first arc member corresponding to the second blank member; scribing a strip contour line on one side of the inner arc surface of the contour line of the first arc member, and the two ends of the strip contour line are respectively connected to the two ends of the contour line of the first arc member in the arc length direction; cutting the steel plate along the contour line of the first arc member and the strip contour line to obtain the second blank member.

[0008] In another implementation manner of the present disclosure, the providing of a third blank member includes: curling the steel plate into an annular structure according to the processing dimensions of the second arc member, and welding the butt joint seam of the annular structure together. The radius of the annular structure is the radius of the semi-cylindrical body; cutting the annular structure along the axial section to obtain the semi-cylindrical body.

[0009] In another implementation manner of the present disclosure, the providing of a plurality of first blank members includes: scribing the outer contour lines of the respective plate members on the steel plate according to the processing dimensions of the plate members corresponding to the first blank members; cutting the steel plate along the outer contour lines to obtain a plurality of first blank members.

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

[0011] In yet another implementation manner of the present disclosure, welding the first arc end plate blank part, the second arc end plate blank part, the support plate blank part, the first thrust panel blank part, the second thrust panel blank part, and the semi-cylindrical body together includes: placing an anti-deformation device between the first thrust panel blank part and the second thrust panel blank part, the anti-deformation device including a top seat, a cylindrical body support member, and a thrust panel support member, the top seat being connected to a plate surface of the support plate blank part away from the first arc end plate blank part, one end of the cylindrical body support member being connected to the top seat, the other end of the cylindrical body support member abutting against the inner wall of the semi-cylindrical body, the length direction of the cylindrical body support member being the radial direction of the semi-cylindrical body, the thrust panel support member being connected to the cylindrical body support member and located on the side of the semi-cylindrical body facing the support plate blank part, and both ends of the thrust panel support member respectively contacting the first thrust panel blank part and the second thrust panel blank part; welding one of the support plate blank parts to the first arc end plate blank part and the first thrust panel blank part respectively, and welding the other support plate blank part to the second arc end plate blank part and the second thrust panel blank part respectively; welding the semi-cylindrical body to the first thrust panel blank part and the second thrust panel blank part respectively; and removing the anti-deformation device.

[0012] In yet another implementation manner of the present disclosure, machining the welded part includes: scribing the outer contour line of the second arc-shaped part on the semi-cylindrical body; scribing 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 in the second blank part.

[0013] In yet another implementation manner of the present disclosure, the plate part further includes two side sealing plates and a bottom plate; before precision machining the welded part, the manufacturing method further includes: respectively assembling the two side sealing plate blanks and the bottom plate blank in the welded part, and making the bottom plate blank face 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 are located between the bottom plate blank and the support plate blank; welding the bottom plate blank, the two side sealing plate blanks to the welded part respectively.

[0014] In yet another implementation manner of the present disclosure, the manufacturing method further includes: performing ultrasonic flaw detection on all weld seams in the welded part.

[0015] In yet another implementation manner of the present disclosure, the manufacturing method further includes: performing stress relief annealing on the bottom plate, the two side sealing plates and the welded part after welding.

[0016] The beneficial effects brought by the technical solution provided by the embodiments of the present disclosure are:

[0017] When machining the housing structural part by using the manufacturing method provided by the embodiments of the present disclosure, since the manufacturing method first provides a first blank part, a second blank part and a third blank part, and the second blank part includes a blank part body corresponding to the first arc-shaped part and a support body, the support body can be used to support the blank part body during subsequent assembly and welding processes, reduce the welding deformation of the blank part body, and improve the precision of the housing structural part.

[0018] Moreover, the provided third blank part is a semi-cylindrical body corresponding to the inner diameter of the second arc-shaped part, so that the semi-cylindrical body can be welded to other plate parts respectively, avoiding welding multiple second arc-shaped parts to the plate parts one by one, improving the welding efficiency and welding quality, and at the same time, improving the assembly efficiency of multiple second arc-shaped parts.

[0019] That is to say, by using the above method, welding deformation can be reduced by arranging a support body in the second blank part. And by adopting the structural form of a semi-cylindrical body as the blank part of multiple second arc-shaped parts, the assembly and welding efficiency of the second blank part, as well as the welding quality, can be greatly improved, and finally the machining precision of the housing blank part can be improved. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0021] Figure 1 Structural schematic diagram of a housing structural member provided by an embodiment of the present disclosure;

[0022] Figure 2 For Figure 1 Left view;

[0023] Figure 3 For Figure 1 Right view;

[0024] Figure 4 Flowchart of a manufacturing method of a housing structural member provided by an embodiment of the present disclosure;

[0025] Figure 5 Flowchart of another manufacturing method of a housing structural member provided by an embodiment of the present disclosure;

[0026] Figure 6 Schematic diagram of the manufacturing process of the first thrust panel blank provided by an embodiment of the present disclosure;

[0027] Figure 7 Schematic diagram of the manufacturing process of the first arc end plate blank provided by an embodiment of the present disclosure;

[0028] Figure 8 Assembly schematic diagram of the support plate blank provided by an embodiment of the present disclosure;

[0029] Figure 9 Assembly schematic diagram of the welded part provided by an embodiment of the present disclosure;

[0030] Figure 10 Assembly schematic diagram of the anti-deformation device arranged in the welded part provided by an embodiment of the present disclosure;

[0031] Figure 11 For Figure 10 Schematic diagram along the D direction;

[0032] Figure 12 Structural schematic diagram of the machined semi-cylinder in the welded part provided by an embodiment of the present disclosure;

[0033] Figure 13 Structural schematic diagram of the welded bottom plate blank provided by an embodiment of the present disclosure.

[0034] The meanings represented by the symbols in the figure are as follows:

[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, blank part of the first thrust panel; 102a, blank part of the second thrust panel; 103a, blank part of the support plate; 104a, blank part of the side sealing plate; 105a, blank part of the bottom plate; 106a, blank part of the rib plate;

[0037] 201, first arc-shaped end plate; 202, second arc-shaped end plate;

[0038] 201a, blank part of the first arc-shaped end plate; 201b, connecting rod; 202a, blank part of the second arc-shaped end plate;

[0039] 301, arc-shaped rib plate; 301a, semi-cylindrical body; 301b, blank part of the arc-shaped rib plate;

[0040] 401, top seat; 402, cylinder support; 403, thrust panel support. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0042] Figure 1 It is a structural schematic diagram of a housing structural member provided by an embodiment of the present disclosure. Figure 2 It is Figure 1 the left view of Figure 3 It is Figure 1 the right view of Figure 1-3 Combined with

[0043] Wherein, the first thrust panel 101 and the second thrust panel 102 are arranged oppositely, and the two side sealing plates 104 are arranged oppositely and are both welded between the first thrust panel 101 and the second thrust panel 102. The bottom 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 after being welded to the first thrust panel 101, the second thrust panel 102 and the two side sealing plates 104 respectively, they jointly define an accommodation cavity 100.

[0044] A plurality of arc-shaped rib plates 301 are arranged coaxially and at intervals in the accommodation cavity 100, and both ends of each arc-shaped rib plate 301 along the arc length direction are welded to the two side sealing plates 104 respectively. The first arc-shaped end plate 201 and the second arc-shaped end plate 202 are both located outside the accommodation cavity 100, and the first arc-shaped end plate 201 is welded to the side of the first thrust panel 101 away from the bottom plate 105, and the second arc-shaped end plate 202 is welded to the side of the second thrust panel 102 away from the bottom plate 105. The two support plates 103 are arranged oppositely at intervals, and one of the support plates 103 is welded to the top of one of the side sealing plates 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 part of the plurality of rib plates 106 is welded at the connection between the first arc-shaped end plate 201 and the first thrust panel 101, and another part of the plurality of rib plates 106 is welded at 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 for cooperating with the shaft.

[0046] Since after welding, ultrasonic flaw detection needs to be carried out on each weld seam. According to the requirements of "NB / T47013.3-2015 Non-destructive testing of pressure equipment - Part 3: Ultrasonic testing", during the ultrasonic flaw detection of the weld seam, the sliding range of the probe is 5 to 6 times the plate thickness distance. To ensure that the weld seams between the first thrust panel 101 and the first arc-shaped end plate 201, between the second thrust panel 102 and the second arc-shaped end plate 202, between the arc-shaped rib plate 301 and the first thrust panel 101 and the second thrust panel 102, etc. can all meet the requirements of ultrasonic flaw detection, and since the above weld seams are not all located on the outer surface of the shell structure, therefore, through holes are provided in both the first thrust panel and the bottom plate. In this way, the weld seams inside the shell structure can be detected through the through holes.

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

[0048] The embodiment of the present disclosure provides a manufacturing method for a shell structure, and this manufacturing method is used to process the above shell structure.

[0049] Figure 4 A flowchart of a manufacturing method for a housing structural member provided by an embodiment of the present disclosure, in combination with Figure 4 , the manufacturing method includes:

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

[0051] The plurality of first blanks correspond one-to-one with a plurality of plate members, and the first blank is the blank of the corresponding plate member.

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

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

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

[0055] S403: Machine-process the welded part so that the first blank has the same structure as the corresponding plate member, so that the third blank forms a plurality of components having the same structure as and corresponding to the plurality of second arc-shaped members one-to-one, and so that the second blank has the same structure as the corresponding first arc-shaped member.

[0056] S404: Finish-machine the inner walls and outer surfaces of the components in the welded part to obtain a housing structural member.

[0057] When the housing structural member is processed by using the manufacturing method provided by the embodiment of the present disclosure, since the manufacturing method first provides a first blank, a second blank, and a third blank, and the second blank includes a blank body corresponding to the first arc-shaped member and a support body, the support body can support the blank body during subsequent assembly and welding processes, reducing the welding deformation of the blank body to improve the accuracy of the housing structural member.

[0058] Moreover, the provided third blank is a semi-cylindrical body corresponding to the inner diameter of the second arc-shaped member. In this way, by welding the semi-cylindrical body to other plate members respectively, it is possible to avoid welding the plurality of second arc-shaped members to the plate members one by one, improving the welding efficiency and welding quality. At the same time, the assembly efficiency of the plurality of second arc-shaped members can also be improved.

[0059] That is to say, by adopting the above method and setting a support body in the second blank, welding deformation can be reduced. Moreover, by adopting the structural form of a semi-cylindrical body as the blank for a plurality of second arc-shaped parts, the assembly and welding efficiency of the second blank, as well as the welding quality, can be greatly improved, and finally the machining accuracy of the shell blank can be improved.

[0060] Figure 5 The flowchart of another manufacturing method of the shell structural member provided by the embodiment of the present disclosure, in combination with Figure 5 , the manufacturing method includes:

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

[0062] In the embodiment of the present 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] The at least one second blank includes a first arc-shaped end plate blank 201a and a second arc-shaped end plate blank 202a.

[0064] Optionally, S501 is implemented in the following manner:

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

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

[0067] That is to say, according to the processing dimensions of each plate in the shell structural member, the first thrust panel blank 101a, the second thrust panel blank 102a, and two support plate blanks 103a are respectively cut out from the steel plate.

[0068] The outer contour of the first blank is the same as that of the corresponding component. Compared with the corresponding component, through holes are provided in the component while no through holes are provided in the first blank.

[0069] Figure 6 The schematic diagram of the manufacturing process of the first thrust panel blank provided by the embodiment of the present disclosure, in combination with Figure 6 , according to Figure 6 the processing dimensions of the first thrust panel 101 in the left shell structural member in

[0070] In order to reduce the subsequent welding deformation of the first thrust panel and the like, when cutting the blank of the first thrust panel 101a, the corresponding through holes are not cut and formed.

[0071] 5013: Mark the contour line 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.

[0072] 5014: Mark a strip-shaped contour line on one side of the inner arc surface of the contour line of the first arc-shaped part, and the two ends of the strip-shaped contour line are respectively connected to the two ends of the arc length direction of the contour line of the first arc-shaped part.

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

[0074] That is to say, the second blank is obtained by retaining the arc-shaped plate and the connecting rod in the steel plate. Wherein, the two ends of the connecting rod are respectively connected to the two ends of the arc length direction of the arc-shaped plate, the arc-shaped plate is the blank body, and the connecting rod is the support body.

[0075] Figure 7 Schematic diagram of the manufacturing process of the first arc-shaped end plate blank provided by the embodiment of the present disclosure, see Figure 7 , since the thicknesses of the first arc-shaped end plate and the second arc-shaped end plate in the housing structural member are both 160 mm, in order to solve the excessive deformation generated during the cutting of the first arc-shaped end plate and the second arc-shaped end plate, when cutting the steel plate, a connecting rod 201b is added in the middle of the second blank.

[0076] That is to say, the first arc-shaped end plate blank 201a has one more connecting rod 201b (that is, the support body) than the first arc-shaped end plate 201. The second arc-shaped end plate blank 202a also has one more connecting rod structure (that is, the support body) than the second arc-shaped end plate 202. In this way, the deformation during the cutting of the first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a can be reduced through the connecting rod 201b, and at the same time, the subsequent welding deformation can also be reduced.

[0077] 5016: Roll the steel plate into an annular structure according to the processing dimensions of the second arc-shaped part, and weld the butt joints of the annular structure together. The radius of the annular structure is the radius of the semi-cylindrical body.

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

[0079] In the embodiment of the present disclosure, a rolling machine is used to roll the steel plate. After reaching the required diameter size of the drawing, the butt joints are welded together. And 100% ultrasonic flaw detection and 100% dye penetrant inspection are carried out on the welds at the butt joints. After passing the inspection, the annular structure is cut along the axial section to obtain a semi-cylindrical body.

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

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

[0082] 5021: Spot-weld the two rough support plate parts 103a at intervals on the assembly platform, and the two rough support plate parts 103 are coplanar.

[0083] Figure 8 The schematic diagram of the assembly of the rough support plate part provided by the embodiment of the present disclosure is as Figure 8 shown. First, draw a cross center line on the assembly platform, and draw the outer contour line of the rough support plate part 103a according to the dimensions, with the requirement that the deviation ≤ 1 mm. Assemble the two rough support plate parts 103a according to the drawn outer contour line of the rough support plate part 103a, and spot-weld and fix them on the assembly platform. Spot-welding and fixing the rough support plate part 103a on the assembly platform can not only fix it, but also facilitate the shell structural part to be separated from the assembly platform after obtaining the shell structural part.

[0084] The support plate 103 is of a U-shaped structure, and the rough support plate part 103a is also of a U-shaped structure. The two rough support plate parts 103a are symmetrically arranged on both sides of the center of the cross center line, and the U-shaped cavities of the rough support plate parts 103a are arranged oppositely.

[0085] 5022: Spot-weld and fix the first arc end plate rough part 201a and the second arc end plate rough part 202a coaxially and at intervals on the plate surface of the same side of the two rough support plate parts 103a, and the arrangement direction of the first arc end plate rough part 201a and the second arc end plate rough part 202a is perpendicular to the arrangement direction of the two rough support plate parts 103a.

[0086] 5023: Arrange the first thrust panel blank 101a and the second thrust panel blank 102a in parallel, and make one surface of the first thrust panel blank 101a flush with the two end surfaces in the arc length direction of the first arc-shaped end plate blank 201a, and one surface of the first thrust panel blank 101a flush with the two end surfaces in the arc length direction of the second arc-shaped end plate blank 202a. Spot-weld the first thrust panel blank 101a to the second thrust panel blank 102a and the support plate blank 103a respectively, and spot-weld the second thrust panel blank 102a to the second arc-shaped end plate blank 202a and the support plate blank 103a respectively.

[0087] 5024: Spot-weld the two ends of the semi-cylindrical body 301a between the first thrust panel blank 101a and the second thrust panel blank 102a, and make the semi-cylindrical body 301a coaxial with the first arc-shaped end plate blank 201a and the second arc-shaped end plate blank 202a.

[0088] Figure 9 The assembly schematic diagram of the welded part provided by the embodiment of the present disclosure is as Figure 9 shown. According to the requirements of the drawing dimensions, spot-weld 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, the semi-cylindrical body 301a, etc. on the same side of the support plate blank 103a. After the assembly is completed, it is as Figure 9 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-cylindrical body 301a together.

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

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

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

[0093] Lift the anti-deformation device and place it inside the housing structural member. The top seat 401 of the anti-deformation device is placed on the support plate blank 103a, and the cylinder support member 402 is in contact with the semi-cylinder 301a. The thrust panel support member 403 is located in the housing structural member and is in contact with the first thrust panel blank 101a and the second thrust panel blank 102a respectively. In this way, the first thrust panel blank 101a, the second thrust panel blank 102a, and the semi-cylinder 301a can be supported respectively by the thrust panel support member 403 and the cylinder support member 402 to reduce deformation.

[0094] It should be noted that when arranging the anti-deformation device, the welding operation space should be considered, and the welding between various components should not be affected. After adjusting the position of the anti-deformation device, weld the top seat 401 to the support plate blank 103a, and the weld is required to be a continuous weld with a weld height of 8 - 10 mm. The remaining parts in 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 end plate blank 201a and the first thrust panel blank 101a respectively, and weld the other support plate blank 103a to the second arc 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] When welding, the rib plate blank 106a can be welded together.

[0100] S504: Perform ultrasonic flaw detection on all welds in the welded part.

[0101] Ultrasonic flaw detection can determine whether the welds meet the requirements during the above welding process.

[0102] S505: Machine the welded part.

[0103] Step S505 may include the following steps:

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

[0105] 5052: Mark the through-hole contour line on the first thrust panel.

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

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

[0108] Figure 12 It is a schematic structural diagram of machining the semi-cylinder in the welded part provided by the embodiment of the present disclosure. Combining Figure 12 , during machining, cut the semi-cylinder according to the size of the arc-shaped rib 301, and the cutting surface is parallel to the cross-section of the semi-cylinder. After cutting, the semi-cylinder 301a is divided into arc-shaped rib blank parts 301b corresponding to the arc-shaped rib 301.

[0109] To improve production efficiency, manual flame cutting is used for cutting, and it is required to leave a margin of 10 - 15 mm on one side.

[0110] During machining, the support body in the second blank part can be cut off together. The through-hole 1010 can also be cut out in the first thrust panel blank part 101a and the second thrust panel blank part 102a together.

[0111] S506: Assemble the two side seal plate blank parts and the bottom plate blank part into the welded part respectively, and make the bottom plate blank part located on the side of the first thrust panel and the second thrust panel away from the support plate blank part, and between the first thrust panel and the second thrust panel. The two side seal plate blank parts are respectively located between the first thrust panel blank part and the second thrust panel blank part, and between the bottom plate blank part and the support plate blank part.

[0112] After assembling the bottom plate blank part and the side seal plate blank part according to the drawing, it is ready for the next welding.

[0113] S507: Weld the bottom plate blank part and the two side seal plate blank parts to the welded part respectively.

[0114] Figure 13The structural schematic diagram of the welded bottom plate blank provided by the embodiments of the present disclosure is shown in Figure 13 After assembly, the bottom plate blank and the side seal plate blank can be directly welded into the structure of the aforementioned welded part by manual welding, thereby obtaining the housing structural part.

[0115] S508: Perform stress relief annealing on the bottom plate, two side seal plates and the welded part after welding.

[0116] Stress relief annealing can release the stress of the welded part to reduce deformation.

[0117] S509: Perform sandblasting and derusting and finish machining on the welded part after stress relief annealing.

[0118] Since the cavity structure composed of the cylinder body, the first thrust panel, the second thrust panel, the bottom seal plate, the side plate and the side seal plate needs to hold oil during subsequent tests and no rust is allowed, sandblasting treatment is required after the annealing of the housing structural part to remove the rust on the inner wall of the cavity structure. Then, according to the drawing dimensions, finish machining is performed on the outer surface and the inner wall of the entire housing structural part to obtain the housing structural part.

[0119] The above are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A method for manufacturing a shell structure, characterized in that: The shell structure comprises a plurality of plates and a plurality of arc-shaped members, wherein the plurality of arc-shaped members comprises at least one first arc-shaped member and a plurality of second arc-shaped members of equal diameter and coaxial arrangement, and the manufacturing method comprises: A plurality of first blanks, at least one second blank and a third blank are provided, wherein the plurality of first blanks correspond to the plurality of plate members one by one, and the first blank is a blank of the corresponding plate member, the at least one second blank corresponds to the at least one first arc-shaped member one by one, and the second blank comprises a blank body and a support body, the blank body is a blank of the first arc-shaped member corresponding to the second blank, the support body is connected between two ends of the blank body in the arc length direction, and 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 member, and the outer diameter of the semi-cylinder is not smaller than the outer diameter of the second arc-shaped member; Welding the first blank, the second blank, and the third blank together to obtain a welded part; Machining the welded part so that the first blank has the same structure as the corresponding plate, so that the third blank forms a plurality of parts having the same structure as the plurality of 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 finely processed to obtain the shell structure.

2. The method for manufacturing a housing structure according to claim 1, characterized in that: The providing of at least one second blank comprises: Drawing a contour line of the first arc-shaped part on the steel plate according to the processing size of the first arc-shaped part corresponding to the second blank; A strip contour line is drawn on one side of the inner arc surface of the contour line of the first arc-shaped member, and two ends of the strip contour line are respectively connected to two ends of the contour line of the first arc-shaped member in the arc length direction; The steel plate is cut along the contour line of the first arc-shaped part and the strip contour line to obtain the second blank.

3. The method for manufacturing a housing structure according to claim 1, characterized in that: The method provides a third blank, comprising: Curling the steel plate into an annular structure according to the processing size of the second arc-shaped member, and welding the butt joints of the annular structure together, wherein the radius of the annular 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 a housing structure according to claim 1, characterized in that: The providing of a plurality of first blanks comprises: Marking the outer contour lines of each of the plates on the steel plate according to the processing dimensions of the plates corresponding to the first blank; The steel plate is cut along the outer contour line to obtain a plurality of the first blanks.

5. The method for manufacturing a housing structure according to any one of claims 1 to 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 comprises: 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, so 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), and the first thrust panel blank (101a) and the second thrust panel blank (102a) are coaxial and located on the same plate surface of the support plate blank (103a). The thrust 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, and 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, and 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 a housing structure according to claim 5, characterized in that: The method 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 comprises: An anti-deformation device is placed between the first thrust panel blank (101a) and the second thrust panel blank (102a), the anti-deformation device comprising a top seat (401), a cylinder support member (402) and a thrust panel support member (403), the top seat (401) being 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 cylinder support member (402) being connected to the top seat (401), and the cylinder support member (402) being connected to the top seat (401). ) is against the inner wall of the semi-cylinder (301a), the length direction of the cylinder support member (402) is the radial direction of the semi-cylinder (301a), the thrust panel support member (403) is connected to the cylinder support member (402), and is located on the side of the semi-cylinder (301a) facing the support plate blank (103a), and the two ends of the thrust panel support member (403) are respectively in contact with the first thrust panel blank (101a) and the second thrust panel blank (102a); Welding one of the support plate blanks (103a) to the first arc-shaped end plate blank (201a) and the first thrust panel blank (101a), and welding the other support plate blank (103a) to the second arc-shaped end plate blank (202a) and the second thrust panel blank (102a); The semi-cylinder (301a) is welded to the first thrust panel blank (101a) and the second thrust panel blank (102a) respectively; The anti-deformation device is removed.

7. The method for manufacturing a housing structure according to claim 5, characterized in that: The step of machining the weldment comprises: Drawing an outer contour line of the second arc-shaped member on the semi-cylinder; Marking a through hole outline on the first thrust panel; Cutting along the outer contour line of the second arc-shaped member and the contour line of the through hole; The supports in the second blank are removed.

8. The method for manufacturing a housing structure according to claim 5, characterized in that: The plate (100) further comprises two side sealing plates (105) and a bottom plate (106); Before finishing the weldment, the manufacturing method further comprises: Assembling the two side sealing plate blanks and the bottom plate blank in the welding part respectively, and making the bottom plate blank face 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 bottom plate blank and the two side sealing plate blanks are respectively welded together with the welding parts.

9. The method for manufacturing a housing structure according to any one of claims 1 to 4 and claim 6, characterized in that: The production method further comprises: All welds in the welded parts are subjected to ultrasonic flaw detection.

10. The method for manufacturing a housing structure according to any one of claims 1 to 4, claim 6 and claim 8, characterized in that: The production method further comprises: The bottom plate, the two side sealing plates and the welded parts are subjected to stress relief annealing after welding.

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