CN115635343A - Wall thickness compensation processing method for welding frame ring with super-large diameter - Google Patents
Wall thickness compensation processing method for welding frame ring with super-large diameter Download PDFInfo
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- CN115635343A CN115635343A CN202211421707.0A CN202211421707A CN115635343A CN 115635343 A CN115635343 A CN 115635343A CN 202211421707 A CN202211421707 A CN 202211421707A CN 115635343 A CN115635343 A CN 115635343A
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- 238000003466 welding Methods 0.000 title claims abstract description 62
- 238000003672 processing method Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 19
- 230000001965 increasing effect Effects 0.000 claims abstract description 6
- 238000003754 machining Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 2
- 239000000047 product Substances 0.000 abstract description 32
- 230000008569 process Effects 0.000 abstract description 8
- 238000005520 cutting process Methods 0.000 abstract description 2
- 239000012467 final product Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
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Abstract
The invention provides a wall thickness compensation processing method for an oversized-diameter tailor-welded frame ring, which comprises the following steps: s1, reasonably arranging three welding ends and formulating a processing sequence; s2, increasing the overall rigidity of the part by using a clamping tool; and S3, aiming at the three welding positions in the step S1, different processing methods are needed. According to the wall thickness compensation processing method for the welding frame ring with the oversized diameter, the three welding ends are the positions with the highest processing precision of the product, the processing process flow of the whole ring and the processing sequence of each position have great influence on the final product quality, the rigidity of the part in the processing process is ensured to the maximum extent by changing the whole cutting amount from small to large through the processing sequence from bottom to top, and meanwhile, the clamping points can be gradually increased from bottom to top so as to further improve the whole clamping stability of the part.
Description
Technical Field
The invention belongs to the technical field of machining of weak-rigidity parts, and particularly relates to a wall thickness compensation machining method for an oversized-diameter tailor-welded frame ring.
Background
7.5 m oversized ring-shaped part, which is used for welding connection with a plurality of components, and the form and position tolerance and the wall thickness of the indirect position of the part have higher technical requirements. The part has the following processing difficulties: 1) The whole ring is formed by welding sectional materials, and the processing of the whole ring is directly influenced by the welding precision of the longitudinal seam. 2) The profile deformation of the large-diameter tailor-welded ring piece caused by the influence of profile forming and welding on the whole ring state is large, and the clamping difficulty is large for ensuring stable processing in machining. 3) The welding quality of the subsequent whole ring has extremely high requirements on the wall thickness and form and position tolerance of the welding seam. The product has large diameter, extremely poor structural rigidity and high size requirement. The processing of curved surface wall thickness is all needed to carry out to the spare part around the longitudinal seam welding of ring spare in the course of working. The traditional turning process can only carry out the processing of a cylindrical surface and an end surface plane. Because the inner surface of the part is a non-machined surface of the section, the forming precision of the section and the deformation state of the whole ring after welding are the difficulties in processing the wall thickness of the curved surface of the ring. At present, no processing case for welding whole-ring parts with the same specification diameter exists in the field of aerospace manufacturing.
Disclosure of Invention
In view of the above, the invention aims to provide a wall thickness compensation processing method for a tailor-welded frame ring with an oversized diameter, so as to solve the problems that clamping is difficult after the whole ring welding forming of the parts is finished, the structural rigidity is poor, and the requirements on the wall thickness and the form and position tolerance are high in precision.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a wall thickness compensation processing method for a welding frame ring with an ultra-large diameter comprises the following steps:
s1, reasonably arranging three welding ends and formulating a processing sequence;
s2, increasing the overall rigidity of the part by using a clamping tool;
and S3, aiming at the three welding positions in the step S1, different processing methods are needed.
Further, the specific method of step S1 is:
s11, processing a lower end welding area;
s12, processing a middle welding step;
s13, processing a welding area with the upper end in a range of 50 mm;
s14, processing an upper end cambered surface area;
s15, processing an upper end face;
and S16, machining the end face of the lower end.
Further, the clamping tool comprises a base 1 and adjusting mechanisms, the base is of a bowl-shaped structure, and the adjusting mechanisms are uniformly distributed in the circumferential direction above the base.
Furthermore, the adjusting mechanism comprises an upper end face pressing part, a lower end face supporting part, a tread inner supporting screw, a tread inner pulling screw, a middle pressing plate, a supporting frame and a base plate, wherein the supporting frame comprises a bottom plate, a vertical plate and a top plate which are vertically connected in sequence, the length of the top plate is smaller than that of the bottom plate, and the side faces of the bottom plate, the vertical plate and the top plate are fixedly connected to the rib plate; a plurality of screw holes for mounting the tread inner supporting screws and the tread inner pulling screws are uniformly distributed on the vertical plate, and the tread inner supporting screws and the tread inner pulling screws are arranged in a staggered manner; riser outside and backing plate fixed connection, middle part pressure strip and lower terminal surface supporting part all are located the backing plate outside, and all through bolted connection to base below, roof top fixed mounting up end portion that compresses tightly, treat that processed product B is located between middle part pressure strip and the backing plate, lower terminal surface supporting part top, the top end portion below of compressing tightly.
Further, the specific method in step S2 is:
s21, sleeving the to-be-processed product B outside all the base plates, enabling the tread of the to-be-processed product B to be in contact with the inner pulling screws, and rotating the inner supporting screws of the tread to enable the inner supporting screws to be close to and support the tread of the to-be-processed product B after the to-be-processed product B is flatly placed to the supporting surface, so that the to-be-processed product B is finally rounded;
s22, the lower end face of the product B to be processed is in contact with the lower end face supporting part, the lower end face supporting part is in bolt connection with the base, end face reference is provided for tire installation of the product B to be processed, segmented processing can be achieved when the lower end face is processed, and the lower end face supporting machine part is adjusted after processing to continuously support a processed face;
and S23, after the lower end and the middle welding area are machined, pressing the outer side of the product B to be machined through a middle pressing plate.
Further, the specific method in step S3 is:
s31, processing the lower end welding end by combining the deformation condition of the profile curved surface and the numerical value of the residual wall thickness;
s32, processing the middle welding end by combining the deformation condition of the shape curved surface;
and S33, processing the upper welding end by combining the deformation condition of the shape curved surface, the inner and outer shape theoretical curved surfaces and the numerical value of the residual wall.
Compared with the prior art, the wall thickness compensation processing method for the welding frame ring with the oversized diameter has the following advantages:
(1) According to the wall thickness compensation processing method for the welding frame ring with the oversized diameter, the three welding ends are the positions with the highest processing precision of the product, the processing process flow of the whole ring and the processing sequence of each position have great influence on the final product quality, the rigidity of the part in the processing process is ensured to the maximum extent by changing the whole cutting amount from small to large through the processing sequence from bottom to top, and meanwhile, the clamping points can be gradually increased from bottom to top so as to further improve the whole clamping stability of the part.
(2) According to the wall thickness compensation processing method for the welding frame ring with the oversized diameter, the whole ring is large in diameter and weak in rigidity, and is easy to deform in a free state, so that a set of reasonable clamping tool needs to be designed to ensure the stability of the part processing process in a clamping state, the whole rigidity of the part is enhanced in the whole processing process, the part is limited to be greatly deformed to the greatest extent, and the processing precision is ensured.
(3) The wall thickness compensation processing method of the welding frame ring with the ultra-large diameter is subject to the requirements of product structure and welding index, the size precision control is difficult to deal with the product deformation, and three different processing strategies are required to be adopted at three welding positions.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a top view of an adjustment mechanism according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an adjustment mechanism according to an embodiment of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a cross-sectional view of a support frame according to an embodiment of the present invention;
fig. 5 is a sectional view of a backing plate according to an embodiment of the present invention.
Description of the reference numerals:
1-a base; 2-an adjustment mechanism; 21-upper end face pressing part; 22-a lower end face support; 23-tread inner bracing screws; 24-tread inner pull screws; 25-middle hold-down plate; 26-a support frame; 261-a bottom plate; 262-vertical plate; 263-top plate; 264-rib plates; 27-a backing plate; b-the product to be processed.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A wall thickness compensation processing method for an oversized-diameter tailor-welded frame ring comprises the following steps:
s1, reasonably arranging three welding ends and formulating a processing sequence;
the specific method comprises the following steps:
and S11, processing the lower end welding area, wherein the lower end welding area is the position which is processed firstly because the removal amount is minimum and the influence on the part processing deformation is minimum.
S12, processing a middle welding step, and further enhancing the clamping stability as a new clamping point of a product after the step is processed;
and S13, processing a welding area with the upper end of 50mm, wherein the welding area is processed to the size required by design firstly in a regional processing mode under the condition that the rigidity of the product is the best, so that the critical size is preferentially ensured, and the rigidity of the product during processing is enhanced.
And S14, processing an upper end cambered surface area, wherein the upper end cambered surface area is mainly used for controlling the smoothness of the processed transition, and stress concentration points generated by steps are avoided.
And S15, processing the upper end face, wherein the pressing plate is sequentially disassembled according to the processing sequence in the processing process to avoid the end face from generating larger deformation after the pressing plate is completely disassembled once.
And S16, processing the lower end face, and processing the lower end plane by adopting a local processing alternate support mode to ensure the flatness of the end face. Due to the fact that the rigidity of the large-diameter section frame is poor, the machining sequence of the three welding ends in the whole manufacturing process is reasonably arranged, the rigidity and the machining stability of parts in the machining process are guaranteed to the maximum extent, and machining accuracy is guaranteed.
S2, increasing the overall rigidity of the part by using a clamping tool;
as shown in fig. 1 to 5, the clamping tool comprises a base 1 and adjusting mechanisms 2, wherein the base 1 is of a bowl-shaped structure, and the adjusting mechanisms 2 are uniformly distributed in the circumferential direction above the base 1. Preferably, each adjusting mechanism 2 is fixedly connected with the base 1 through a bolt.
The adjusting mechanism 2 comprises an upper end face pressing part 21, a lower end face supporting part 22, a tread inner supporting screw 23, a tread inner pulling screw 24, a middle pressing plate 25, a supporting frame 26 and a base plate 27, wherein the supporting frame 26 comprises a bottom plate 261, a vertical plate 262 and a top plate 263 which are vertically (screw) connected in sequence, the length of the top plate 263 is smaller than that of the bottom plate 261, and the side faces of the bottom plate 261, the vertical plate 262 and the top plate 263 are fixedly connected to a rib plate 264; a plurality of screw holes for mounting the tread inner supporting screws 23 and the tread inner pulling screws 24 are uniformly distributed on the vertical plate 261, and the tread inner supporting screws 23 and the tread inner pulling screws 24 are arranged in a staggered manner; riser 261 the outside and backing plate 27 fixed connection, middle part pressure strip 25 and lower terminal surface supporting part 22 all are located the backing plate 27 outside, and all through bolted connection to base 1 below, roof 263 top fixed mounting up end portion of compressing tightly 21, treat that processing product B is located between middle part pressure strip 25 and the backing plate 27, lower terminal surface supporting part 22 top, up end portion of compressing tightly 21 below.
The specific method comprises the following steps:
and S21, due to the fact that the roundness of the welded and formed part is poor, the inner circle of the part has large and small diameters. The path is less than the theoretical value far away, and the part often can't the direct mount treat processing product B to conventional fixed interior shape, consequently treats that processing product B has designed reducing mechanism, will treat that processing product B cup joints in the outside of all backing plates 27, treats that processing product B's tread and interior lag screw 24 contact, treats that processing product B lays flat to the holding surface after, and rotatory tread internal stay screw 24 makes it be close to and supports treating processing product B's tread, finally makes and treats processing product B to prop the circle.
S22, the lower end face of the product B to be processed is in contact with the lower end face supporting part 22, the lower end face supporting part 22 is in bolt connection with the base 1, so that the vertical height can be freely adjusted, an end face reference is provided for tire mounting of the product B to be processed, segmented processing can be realized when the lower end face is processed, and the processed face can be continuously supported by adjusting the lower end face supporting part 22 after processing.
S23, after the lower end and the middle welding area are machined, the outer side of the product B to be machined can be pressed by adding the middle pressing plate 25, the stability of the product B to be machined is further improved, and the machining precision of the upper welding area is improved.
Because the whole ring has large diameter and weak rigidity and is easy to deform in a free state, a set of reasonable clamping tool needs to be designed for ensuring the stability of the part machining process in a clamping state, the whole rigidity of the part is enhanced in the whole machining process, the part is limited to have larger deformation to the maximum extent, and the machining precision is ensured.
S3, aiming at the three welding positions in the step S1, three different processing methods are needed;
the specific method comprises the following steps:
s31, machining the lower end welding end by combining the numerical values of the deformation condition of the profile curved surface and the residual wall thickness
S32, processing the middle welding end by combining the deformation condition of the outline curved surface
And S33, machining the upper welding end by combining the deformation condition of the outline curved surface, the internal and external theoretical curved surfaces and the numerical value of the residual wall. The requirement of product structure and welding index is met, the dimensional accuracy control is difficult to deal with the product deformation, and three different processing strategies need to be adopted at three welding positions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (6)
1. A wall thickness compensation processing method for an ultra-large diameter tailor-welded frame ring is characterized by comprising the following steps: the method comprises the following steps:
s1, arranging three welding ends and formulating a processing sequence;
s2, increasing the overall rigidity of the part by using a clamping tool;
and S3, aiming at the three welding positions in the step S1, different processing methods are needed.
2. The wall thickness compensation processing method of the welding frame ring with the ultra-large diameter according to claim 1, characterized in that: the specific method of the step S1 is as follows:
s11, processing a lower end welding area;
s12, processing a middle welding step;
s13, processing a welding area with the upper end in a range of 50 mm;
s14, processing an upper end cambered surface area;
s15, processing an upper end face;
and S16, machining the end face of the lower end.
3. The wall thickness compensation processing method of the welding frame ring with the ultra-large diameter according to claim 1, characterized in that: the clamping tool comprises a base 1 and adjusting mechanisms, the base is of a bowl-shaped structure, and the adjusting mechanisms are uniformly distributed in the circumferential direction above the base.
4. The wall thickness compensation processing method of the welding frame ring with the ultra-large diameter according to claim 3, characterized in that: the adjusting mechanism comprises an upper end face pressing part, a lower end face supporting part, a tread inner supporting screw, a tread inner pulling screw, a middle pressing plate, a supporting frame and a base plate, wherein the supporting frame comprises a bottom plate, a vertical plate and a top plate which are sequentially and vertically connected, the length of the top plate is smaller than that of the bottom plate, and the side faces of the bottom plate, the vertical plate and the top plate are fixedly connected to the rib plate; a plurality of screw holes for mounting the tread inner supporting screws and the tread inner pulling screws are uniformly distributed on the vertical plate, and the tread inner supporting screws and the tread inner pulling screws are arranged in a staggered manner; riser outside and backing plate fixed connection, middle part pressure strip and lower terminal surface supporting part all are located the backing plate outside, and all through bolted connection to base below, roof top fixed mounting up end portion that compresses tightly, treat that processed product B is located between middle part pressure strip and the backing plate, lower terminal surface supporting part top, the top end portion below of compressing tightly.
5. The wall thickness compensation processing method of the welding frame ring with the ultra-large diameter according to claim 4, characterized in that: the specific method of the step S2 is as follows:
s21, sleeving the to-be-processed product B outside all the base plates, enabling the tread of the to-be-processed product B to be in contact with the inner pulling screws, and rotating the inner supporting screws of the tread to enable the inner supporting screws to be close to and support the tread of the to-be-processed product B after the to-be-processed product B is flatly placed to the supporting surface, so that the to-be-processed product B is finally rounded;
s22, the lower end face of the product B to be processed is in contact with the lower end face supporting part, the lower end face supporting part is in bolt connection with the base, end face reference is provided for tire installation of the product B to be processed, segmented processing can be achieved when the lower end face is processed, and the lower end face supporting machine part is adjusted after processing to continuously support a processed face;
and S23, after the lower end and the middle welding area are machined, the outer side of the product B to be machined is pressed tightly through a middle pressing plate.
6. The wall thickness compensation processing method of the welding frame ring with the ultra-large diameter according to claim 2, characterized in that: the specific method of the step S3 is as follows:
s31, machining the lower end welding end by combining the deformation condition of the outline curved surface and the numerical value of the residual wall thickness;
s32, processing the middle welding end by combining the deformation condition of the shape curved surface;
and S33, machining the upper welding end by combining the deformation condition of the outline curved surface, the internal and external theoretical curved surfaces and the numerical value of the residual wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211421707.0A CN115635343A (en) | 2022-11-14 | 2022-11-14 | Wall thickness compensation processing method for welding frame ring with super-large diameter |
| PCT/CN2023/100615 WO2024103713A1 (en) | 2022-11-14 | 2023-06-16 | Compensation machining method for wall thickness of super-large diameter tailor-welded frame ring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211421707.0A CN115635343A (en) | 2022-11-14 | 2022-11-14 | Wall thickness compensation processing method for welding frame ring with super-large diameter |
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| CN115635343A true CN115635343A (en) | 2023-01-24 |
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| WO (1) | WO2024103713A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024103713A1 (en) * | 2022-11-14 | 2024-05-23 | 天津航天长征火箭制造有限公司 | Compensation machining method for wall thickness of super-large diameter tailor-welded frame ring |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319942A (en) * | 2011-09-05 | 2012-01-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Titanium alloy welded case installation edge pre-deformation welding and micro forming method |
| CN202741984U (en) * | 2012-07-24 | 2013-02-20 | 哈电集团（秦皇岛）重型装备有限公司 | Ultra-long thin-walled large diameter moisture separator reheater barrel body distortion preventing device |
| DE102013110371B3 (en) * | 2012-12-10 | 2014-02-06 | Mt Aerospace Ag | Device, useful for e.g. clamping and aligning segment-like, thin-walled and hollow profiled members, comprises a frame-like supporting structure supported on or to a base and held by a clamping device that comprises clamping elements |
| CN104646875B (en) * | 2015-02-06 | 2016-08-31 | 中国运载火箭技术研究院 | A kind of morpheme dimensional control methods of 5M level weak rigidity overlength tank |
| CN106623990A (en) * | 2017-01-24 | 2017-05-10 | 天津航天长征火箭制造有限公司 | Accurate machining method for large-diameter aluminum alloy non-uniform section frame ring |
| CN110421368B (en) * | 2019-07-24 | 2020-11-20 | 上海航天设备制造总厂有限公司 | Turning tool and method for large thin-wall conical aluminum alloy part |
| CN112643368B (en) * | 2020-12-08 | 2022-04-05 | 北京星航机电装备有限公司 | Deformation control method for vertical clamping machining of special-shaped thin-wall cabin parts |
| CN115635343A (en) * | 2022-11-14 | 2023-01-24 | 天津航天长征火箭制造有限公司 | Wall thickness compensation processing method for welding frame ring with super-large diameter |
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- 2022-11-14 CN CN202211421707.0A patent/CN115635343A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024103713A1 (en) * | 2022-11-14 | 2024-05-23 | 天津航天长征火箭制造有限公司 | Compensation machining method for wall thickness of super-large diameter tailor-welded frame ring |
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