CN112372241B - Method for processing large thin-wall bowl-shaped shell and oil bag protective cover - Google Patents
Method for processing large thin-wall bowl-shaped shell and oil bag protective cover Download PDFInfo
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- CN112372241B CN112372241B CN202011140092.5A CN202011140092A CN112372241B CN 112372241 B CN112372241 B CN 112372241B CN 202011140092 A CN202011140092 A CN 202011140092A CN 112372241 B CN112372241 B CN 112372241B
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
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- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The embodiment of the invention provides a processing method of a large thin-wall bowl-shaped shell and an oil sac protective cover, which comprise the following steps: s1, cutting a first thin plate to obtain a first shell, wherein the first shell is a circular flaky thin plate; s2, cutting a fourth thin plate to obtain a second shell, wherein the second shell is an annular flaky thin plate, and the diameter of the inner circle of the second shell is smaller than that of the first shell; s3, welding the first shell above the second shell, wherein a central shaft of the first shell is overlapped with a central shaft of the second shell to obtain a welded third shell; and S4, turning the third shell to obtain the large thin-wall bowl-shaped shell. By using the technical scheme of the invention, production resources and human resources can be balanced, the progress production of the whole product is guaranteed, the whole efficiency is improved, and the processing cost is greatly reduced.
Description
Technical Field
The invention relates to the field of metal processing, in particular to a processing method of a large thin-wall bowl-shaped shell and an oil bag protective cover.
Background
The oil sac protective cover is a large bowl-shaped thin-wall shell, has the characteristics of large diameter, small height and thin wall thickness, and has the defects of poor integral rigidity, easy deformation and high machining difficulty of parts. The conventional processing method is stamping forming, a die needs to be manufactured in the stamping forming, and the stamping forming is used for processing the large bowl-shaped thin-wall shell under the conditions of small batch production or tension in processing progress, so that the difficulty is high, and the processing cost is greatly increased.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a processing method of a large thin-wall bowl-shaped shell and an oil bag protective cover, which aim to balance production resources and human resources, guarantee the production progress of an integral product, improve the machining efficiency and greatly reduce the processing cost. In one aspect, an embodiment of the present invention provides a method for processing a large thin-walled bowl-shaped shell, including:
s1, cutting a first thin plate to obtain a first shell, wherein the first shell is a round flaky thin plate;
s2, cutting a fourth thin plate to obtain a second shell, wherein the second shell is an annular flaky thin plate, and the diameter of the inner circle of the second shell is smaller than that of the first shell;
s3, welding the first shell to the upper side of the second shell, and enabling a central shaft of the first shell to be overlapped with a central shaft of the second shell to obtain a welded third shell;
and S4, turning the third shell to obtain the large thin-wall bowl-shaped shell.
Further, the step S1 includes:
s11, cutting the first thin plate by using a water cutting processing method to obtain a cut first shell;
s12, milling the cut circumferential surface of the first shell by using a milling method to enable the circumferential surface of the first shell to be smooth;
s13, cleaning the first shell.
Further, step S11 is preceded by:
s111, cutting by using a water cutting processing method to obtain a second thin plate and a third thin plate;
s112, milling the cut side surfaces of the second thin plate and the third thin plate by using a milling method to enable the side surfaces of the second thin plate and the third thin plate to be smooth;
s113, cleaning the second thin plate and the third thin plate;
s114, welding the second thin plate and the third thin plate side by side to obtain the first thin plate.
Further, the step S2 includes:
s21, cutting the fourth thin plate by using a water cutting processing method to obtain a cut second shell;
s22, milling the cut inner circumferential surface of the second shell by using a milling method to enable the circumferential surface of the second shell to be smooth;
and S23, cleaning the second shell.
Further, step S21 is preceded by:
s211, cutting by using a water cutting processing method to obtain a fifth thin plate and a sixth thin plate;
s212, milling the cut side surfaces of the fifth thin plate and the sixth thin plate by using a milling method to enable the side surfaces of the fifth thin plate and the sixth thin plate to be smooth;
s213, cleaning the fifth thin plate and the sixth thin plate;
s214, welding the fifth thin plate and the sixth thin plate side by side to obtain the fourth thin plate.
Further, the step S3 includes:
s31, when the central axis of the first shell is superposed with the central axis of the second shell and the first shell is placed above the second shell, an annular superposed area exists between the lower surface of the first shell and the upper surface of the second shell, the superposed area of the lower surface of the first shell is a first superposed surface, and the superposed area of the upper surface of the second shell is a second superposed surface;
s32, milling the first superposed surface and the second superposed surface respectively to enable the first superposed surface and the second superposed surface to be smooth;
s33, cleaning the first shell and the second shell;
s34, welding the first shell to the upper portion of the second shell, enabling the central axis of the first shell to coincide with the central axis of the second shell, and enabling the first coinciding surface to coincide with the second coinciding surface to obtain the welded third shell. Further, the step S4 includes:
s41, tightly supporting the inner circumferential surface of the third shell by using an arc-shaped block;
s42, turning the surface of the third shell according to the machining requirement to obtain a fourth shell;
s43, removing the arc-shaped block, and pressing the fourth shell by using a circular plate;
and S44, turning the inner circumferential surface of the fourth shell according to the machining requirement to obtain the large thin-wall bowl-shaped shell. Furthermore, the circular plate is an inner circle of the second shell which is cut when the second shell is cut.
The technical scheme has the following beneficial effects:
1. the machining difficulty is reduced, the technical problems of poor integral rigidity and easy deformation of a large thin-wall bowl-shaped shell are solved on the premise of meeting the size of a part, and the product requirement is met;
2. production resources and human resources are balanced, and under the condition of small-batch production or tension in processing progress, the production progress of the whole product is guaranteed, the whole processing efficiency is improved, and the processing cost is greatly reduced;
3. the technical scheme is an innovation in the process of machining the large-sized thin-wall shell, provides a problem solving idea for the subsequent machining of parts of the same type, and has a good popularization effect.
On the other hand, the embodiment of the invention provides an oil bag protective cover which is obtained by processing by any one of the processing methods. The technical scheme has the following beneficial effects:
1. the machining difficulty is reduced, the technical problems of poor integral rigidity and easy deformation of the oil sac protective cover are solved on the premise of meeting the size of the part, and the product requirement of the oil sac protective cover is met;
2. production resources and manpower resources are balanced, production progress of the oil bag protection cover is guaranteed under the conditions of small-batch production or tension in processing progress, processing efficiency of the oil bag protection cover is improved, and processing cost is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of manufacturing a large thin-walled bowl-shaped shell according to an embodiment of the present invention;
FIG. 2 is a flowchart of step S1 according to an embodiment of the present invention;
FIG. 3 is a flowchart before step S11 according to an embodiment of the present invention;
FIG. 4 is a flowchart of step S2 according to an embodiment of the present invention;
FIG. 5 is a flowchart according to an embodiment of the invention before step S21;
FIG. 6 is a flowchart of step S3 according to an embodiment of the present invention;
fig. 7 is a flowchart of step S4 according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the processing method of the large thin-wall bowl-shaped shell shown in fig. 1 is used for replacing a stamping forming method to obtain the large thin-wall bowl-shaped shell with the diameter far larger than the wall thickness and the diameter far larger than the height.
In this embodiment, the large thin-walled bowl-shaped shell is an oil sac protective cover, and has the size of 1856mm in diameter, 6mm in wall thickness and 45mm in height;
the method comprises the following steps:
s1, cutting a first thin plate to obtain a first shell, wherein the first shell is a circular flaky thin plate;
the thickness of the first thin plate is 6mm, and is the same as the final thickness of the product;
as shown in fig. 2, the step S1 includes:
s11, cutting the first thin plate by using a water cutting processing method to obtain a cut first shell;
if the size of the sheet is smaller than the diameter of the product, a plurality of sheets need to be pieced together to form the first sheet.
As shown in fig. 3, the step S11 may include:
s111, cutting by using a water cutting processing method to obtain a second thin plate and a third thin plate;
the second sheet may have a size of 1400mm × 320 mm; the third sheet may have a size of 1480mm × 1770 mm.
Two sheets with different sizes are adopted, so that the tailor welding deformation is mainly prevented, and the welding amount is reduced.
S112, milling the cut side surfaces of the second thin plate and the third thin plate by using a milling method to enable the side surfaces of the second thin plate and the third thin plate to be smooth;
and the side surfaces of the second thin plate and the third thin plate are smooth, so that the second thin plate and the third thin plate can be welded conveniently.
For the second sheet, only one side with a dimension of 320mm may be milled;
for the third sheet, only one side of size 1480mm may be milled.
S113, cleaning the second thin plate and the third thin plate;
s114, welding the second thin plate and the third thin plate side by side to obtain the first thin plate.
Splicing the face with the size of the second thin plate being 320mm and the face with the size of the third thin plate being 1480mm in a center line alignment manner, and welding the second thin plate and the third thin plate into the first thin plate;
the welding method can be electron beam tailor welding or other welding modes meeting the processing requirements, and the welding mode is not limited in the embodiment.
The size of the first thin plate obtained after welding is larger than the product size of the oil bag protection cover, so that the first shell meeting the size requirement of a final product can be cut on the first thin plate.
S12, milling the cut circumferential surface of the first shell by using a milling method to enable the circumferential surface of the first shell to be smooth;
s13, cleaning the first shell.
The circumferential surface of the first shell is smooth and clean, and the first shell can be conveniently welded subsequently.
S2, cutting the fourth thin plate to obtain a second shell, wherein the second shell is an annular flaky thin plate, and the diameter of the inner circle of the second shell is smaller than that of the first shell;
as shown in fig. 4, the step S2 includes:
s21, cutting the fourth thin plate by using a water cutting machining method to obtain a cut second shell;
if the size of the sheet is smaller than the diameter of the product, a plurality of sheets need to be split into the fourth sheet.
As shown in fig. 5, the step S21 may include:
s211, cutting by using a water cutting processing method to obtain a fifth thin plate and a sixth thin plate;
the fifth sheet and the sixth sheet may have a size of 1960mm × 960 mm.
S212, milling the cut side surfaces of the fifth thin plate and the sixth thin plate by using a milling method to enable the side surfaces of the fifth thin plate and the sixth thin plate to be smooth;
and the side surfaces of the fifth thin plate and the sixth thin plate are smooth, so that the fifth thin plate and the sixth thin plate can be welded conveniently.
For the fifth and sixth thin plates, only one side having a size of 960mm may be milled.
S213, cleaning the fifth thin plate and the sixth thin plate;
s214, welding the fifth thin plate and the sixth thin plate side by side to obtain the fourth thin plate.
Splicing the fifth sheet and the sixth sheet in alignment on the side with the size of 960mm, and welding the fifth sheet and the sixth sheet into the fourth sheet;
the welding method can be electron beam tailor welding, and can also be other welding modes meeting the processing requirements, and the embodiment does not limit the welding mode.
The size of the fourth thin plate obtained after welding is larger than the product size of the oil bag protection cover, so that the second shell meeting the size requirement of a final product can be cut on the fourth thin plate.
S22, milling the cut inner circumferential surface of the second shell by using a milling method to enable the circumferential surface of the second shell to be smooth;
and S23, cleaning the second shell.
And the inner circumferential surface of the second shell is smooth and clean, so that the second shell can be conveniently welded subsequently.
S3, welding the first shell above the second shell, wherein a central shaft of the first shell is overlapped with a central shaft of the second shell to obtain a welded third shell;
as shown in fig. 6, the step S3 includes:
s31, when the central axis of the first shell is superposed with the central axis of the second shell and the first shell is placed above the second shell, an annular superposed region exists between the lower surface of the first shell and the upper surface of the second shell, the superposed region of the lower surface of the first shell is a first superposed surface, and the superposed region of the upper surface of the second shell is a second superposed surface;
s32, milling the first superposed surface and the second superposed surface respectively to enable the first superposed surface and the second superposed surface to be smooth;
s33, cleaning the first shell and the second shell;
and the first overlapped surface and the second overlapped surface are smooth, so that the first shell and the second shell can be conveniently welded in a subsequent process.
S34, welding the first shell to the upper portion of the second shell, enabling the central axis of the first shell to coincide with the central axis of the second shell, and enabling the first coinciding surface to coincide with the second coinciding surface to obtain the welded third shell.
The welding method can be electron beam tailor welding, and can also be other welding modes meeting the processing requirements, and the embodiment does not limit the welding mode.
And S4, turning the third shell to obtain the large thin-wall bowl-shaped shell.
As shown in fig. 7, the step S4 includes:
s41, tightly supporting the inner circumferential surface of the third shell by using an arc-shaped block;
s42, turning the surface of the third shell according to the machining requirement to obtain a fourth shell;
and turning the external dimension of the third shell, including the circle of the outer surface and the welding interface.
S43, removing the arc-shaped block, and pressing the fourth shell by using a circular plate;
the circular plate is an inner circle of the second shell which is cut when the second shell is cut.
And during turning, the fourth shell is tightly pressed by a tool.
And S44, turning the inner circumferential surface of the fourth shell according to the machining requirement to obtain the large thin-wall bowl-shaped shell.
The embodiment has the following beneficial effects:
1. the machining difficulty is reduced, the technical problems of poor integral rigidity and easy deformation of a large thin-wall bowl-shaped shell are solved on the premise of meeting the size of a part, and the product requirement is met;
2. production resources and human resources are balanced, the production progress of the whole product is guaranteed under the condition of small-batch production or tension in processing progress, the whole processing efficiency is improved, and the processing cost is greatly reduced;
3. the technical scheme is an innovation in the process of machining the large-sized thin-wall shell, provides a problem solving idea for the subsequent machining of parts of the same type, and has a good popularization effect.
Example 2:
the embodiment provides an oil bag protective cover which is obtained by processing according to any one of the processing methods in the embodiment 1.
The processing method of the oil bag protective cover of the present embodiment is as described in embodiment 1, and is not described herein again.
The technical scheme of the embodiment has the following beneficial effects:
1. the machining difficulty is reduced, the technical problems of poor integral rigidity and easy deformation of the oil sac protective cover are solved on the premise of meeting the size of the part, and the product requirement of the oil sac protective cover is met;
2. production resources and human resources are balanced, production progress of the oil bag protection cover is guaranteed under the condition of small-batch production or tension in processing progress, processing efficiency of the oil bag protection cover is improved, and processing cost is greatly reduced.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. The processing method of the large thin-wall bowl-shaped shell is characterized by comprising the following steps:
s1, cutting a first thin plate to obtain a first shell, wherein the first shell is a circular flaky thin plate; the first thin plate is formed by welding two thin plates with different sizes;
s2, cutting the fourth thin plate to obtain a second shell, wherein the second shell is an annular flaky thin plate, and the diameter of the inner circle of the second shell is smaller than that of the first shell;
s3, welding the first shell to the upper side of the second shell, and enabling a central shaft of the first shell to be overlapped with a central shaft of the second shell to obtain a welded third shell;
s4, turning the third shell to obtain the large thin-wall bowl-shaped shell;
wherein the S4 includes:
s41, tightly supporting the inner circumferential surface of the third shell by using an arc-shaped block;
s42, turning the surface of the third shell according to the machining requirement to obtain a fourth shell;
s43, removing the arc-shaped block, and pressing the fourth shell by using a circular plate;
and S44, turning the inner circumferential surface of the fourth shell according to the machining requirement to obtain the large thin-wall bowl-shaped shell.
2. The method for manufacturing a large thin-walled bowl-shaped shell according to claim 1, wherein the step S1 includes:
s11, cutting the first thin plate by using a water cutting processing method to obtain a cut first shell;
s12, milling the cut circumferential surface of the first shell by using a milling method to enable the circumferential surface of the first shell to be smooth;
s13, cleaning the first shell.
3. The method of manufacturing a large thin-walled bowl-shaped shell according to claim 2, wherein said step S11 is preceded by:
s111, cutting by using a water cutting processing method to obtain a second thin plate and a third thin plate;
s112, milling the cut side surfaces of the second thin plate and the third thin plate by using a milling method to make the side surfaces of the second thin plate and the third thin plate smooth;
s113, cleaning the second thin plate and the third thin plate;
s114, welding the second thin plate and the third thin plate side by side to obtain the first thin plate.
4. The method of manufacturing a large thin-walled bowl-shaped shell according to claim 1, wherein said step S2 includes:
s21, cutting the fourth thin plate by using a water cutting machining method to obtain a cut second shell;
s22, milling the cut inner circumferential surface of the second shell by using a milling method to enable the circumferential surface of the second shell to be smooth;
s23, cleaning the second shell.
5. The method for manufacturing a large thin-walled bowl-shaped shell according to claim 4, wherein the step S21 is preceded by:
s211, cutting by using a water cutting processing method to obtain a fifth thin plate and a sixth thin plate;
s212, milling the cut side surfaces of the fifth thin plate and the sixth thin plate by using a milling method to enable the side surfaces of the fifth thin plate and the sixth thin plate to be smooth;
s213, cleaning the fifth thin plate and the sixth thin plate;
s214, welding the fifth thin plate and the sixth thin plate side by side to obtain the fourth thin plate.
6. The method for manufacturing a large thin-walled bowl-shaped shell according to claim 1, wherein the step S3 includes:
s31, when the central axis of the first shell is superposed with the central axis of the second shell and the first shell is placed above the second shell, an annular superposed region exists between the lower surface of the first shell and the upper surface of the second shell, the superposed region of the lower surface of the first shell is a first superposed surface, and the superposed region of the upper surface of the second shell is a second superposed surface;
s32, milling the first superposed surface and the second superposed surface respectively to enable the first superposed surface and the second superposed surface to be smooth;
s33, cleaning the first shell and the second shell;
s34, welding the first shell to the upper portion of the second shell, enabling the central axis of the first shell to coincide with the central axis of the second shell, and enabling the first coinciding surface to coincide with the second coinciding surface to obtain the welded third shell.
7. The method of claim 1, wherein the circular plate is an inner circle of the second shell that is cut when the second shell is cut.
8. An oil sac protective cover, processed by the processing method as claimed in any one of claims 1 to 7.
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| CN202011140092.5A CN112372241B (en) | 2020-10-22 | 2020-10-22 | Method for processing large thin-wall bowl-shaped shell and oil bag protective cover |
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| CN202011140092.5A CN112372241B (en) | 2020-10-22 | 2020-10-22 | Method for processing large thin-wall bowl-shaped shell and oil bag protective cover |
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| CN112372241A (en) | 2021-02-19 |
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