CN116900456B - A processing device and method for low-pressure turbine guide vane outer casing - Google Patents
A processing device and method for low-pressure turbine guide vane outer casingInfo
- Publication number
- CN116900456B CN116900456B CN202311032775.2A CN202311032775A CN116900456B CN 116900456 B CN116900456 B CN 116900456B CN 202311032775 A CN202311032775 A CN 202311032775A CN 116900456 B CN116900456 B CN 116900456B
- Authority
- CN
- China
- Prior art keywords
- clamp body
- adjusting screw
- adjusting
- pressing plate
- ring section
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
本发明公开了一种用于低压涡轮导向器外机匣的加工装置，包括夹具体，设置在夹具体上方的上压板和其下方的下压板，夹具体上部还设置有调整块，调整块上设置有通气孔，通气孔的两端分别设置有保护槽和气保槽，在夹具体上还设置有与气保槽联通的进气嘴。加工方法如下：夹装下环段，将下环段装入下压板，并调整第四调节螺钉将其固定并压紧；夹装上环段,装入上压板，并调整第一调节螺钉和第二调节螺钉将其固定，下环段和上环段为I形对接，且连接处形成焊接间隙；调节焊缝间隙，通过第三调节螺钉移动调整块调节焊缝间隙，调整的范围包括通气孔、保护槽及气保槽；焊接，调节焊缝间隙达到标准宽度后，通过进气嘴接入氩气源，使得焊接处氩气保护均匀。
The present invention discloses a processing device for the outer casing of a low-pressure turbine guide vane, comprising a clamping body, an upper pressure plate arranged above the clamping body and a lower pressure plate below the clamping body, an adjustment block is further provided on the upper part of the clamping body, a vent is provided on the adjustment block, a protective groove and a gas protection groove are respectively provided at both ends of the vent, and an air intake nozzle connected to the gas protection groove is further provided on the clamping body. The processing method is as follows: clamp the lower ring segment, install the lower ring segment into the lower pressure plate, and adjust the fourth adjusting screw to fix and press it; clamp the upper ring segment, install it into the upper pressure plate, and adjust the first adjusting screw and the second adjusting screw to fix it, the lower ring segment and the upper ring segment are I-shaped butt-jointed, and a welding gap is formed at the connection; adjust the weld gap, and adjust the weld gap by moving the adjustment block through the third adjusting screw, and the adjustment range includes the vent, the protective groove and the gas protection groove; weld, after adjusting the weld gap to reach the standard width, connect the argon source through the air intake nozzle to ensure uniform argon protection at the weld.
Description
Technical Field
The invention belongs to the technical field of aeroengine manufacturing, and particularly relates to a processing device and method for an outer casing of a low-pressure turbine guide.
Background
Referring to fig. 1, the outer casing of the low-pressure turbine guide is formed by welding two sections of casings, butt argon arc welding is performed, the materials of a part A and a part B are high-temperature alloys, and the wall thickness of a welding part is 1.1+/-0.1. Because the welding can cause deformation of the parts, machining allowance is left at the place of the final size after the welding so as to ensure that the final size meets the design requirement. The structure of the part A and the part B, which leave a margin before welding, is shown in fig. 2, and the welding gap and the argon arc welding protection are difficult when the part A and the part B are welded by argon arc welding.
During argon arc welding, the adverse effects of oxygen, nitrogen, hydrogen and the like in the air on an electric arc and a molten pool are isolated by the protection of argon, so that the burning loss of alloy elements is reduced, and a welding joint which is compact, free of splashing and high in quality is obtained. Turbine bearings are typically plate welded cases, the inner walls of which require welding bumps. When welding the lug, because the support plate may interfere, the gas protection clamp is difficult to fix, and the lug is difficult to weld. When the structure is welded in a vacuum environment, the structure is inconvenient to observe and operate in a vacuum box, and the welding gap cannot be adjusted.
The technical device for automatic welding of the circumferential seam of the cylindrical thin-wall casing with the publication number of CN113579438B comprises a positioning system, wherein the positioning system comprises a base and an end surface positioning ring, the end surface positioning ring is fixedly arranged on the upper surface of the base through bolts, the positioning system is used for positioning the bottom surface and the inner hole of the lower mounting edge of the cylindrical casing to realize radial positioning of the axial direction and the bottom of the cylindrical casing, the lifting system is arranged in the center of the upper surface of the base, the expanding system comprises a plurality of expanding components, the welding seam parts of the cylindrical casing are respectively expanded by the plurality of expanding components, the plurality of expanding components are sleeved on the lifting system and are respectively connected with corresponding screw rod components in the lifting system, the cylindrical casing is sleeved outside the expanding system, the compressing system is arranged at the top of the cylindrical casing, and the bottom end of the compressing system is fixedly arranged at the top end of the lifting system. The quick clamping of the cylindrical casing before welding is realized, the clamping time of the part is shortened, the process preparation time is shortened by more than 30%, the welding deformation of the part is reduced, and 100% qualified delivery of the part is realized, but the gas protection for welding seam adjustment and argon arc welding is still not achieved.
Disclosure of Invention
In order to solve the problems, the present invention aims to provide a processing device and a processing method for a low-pressure turbine guide outer casing,
In order to achieve the purpose, the processing device for the outer casing of the low-pressure turbine guide device comprises a clamp body, an upper pressing plate arranged above the clamp body and a lower pressing plate arranged below the clamp body, wherein an adjusting block is further arranged on the upper portion of the clamp body, a vent hole is formed in the adjusting block, protection grooves and air protection grooves are respectively formed in two ends of the vent hole, and an air inlet nozzle communicated with the air protection grooves is further arranged on the clamp body.
The structure of the clamp body is matched with the structure of the upper ring section and the lower ring section of the low-conductivity outer casing.
The upper pressing plate is matched with the screw cap through two screws, the upper pressing plate is arranged above the clamp body, the first adjusting screw penetrates through the upper pressing plate and is embedded into the clamp body, the screw cap is arranged at the joint of the upper pressing plate and the plane above the clamp body respectively, one end of the second adjusting screw penetrates into the upper pressing plate, the other end of the second adjusting screw is arranged on the upper surface of the clamp body, and the screw cap is matched with the joint of the lower plane of the clamp body.
The clamp body is placed with the laminating of adjusting block, has link up protection groove, air vent, gas protection groove, air inlet nozzle in proper order from one end to the other end be provided with the passageway UNICOM between gas protection groove and the air inlet nozzle.
And a third adjusting screw is arranged below the adjusting block and connected with the clamp body.
The lower pressure plate is penetrated by a fourth adjusting screw and embedded into the clamp body, a nut is arranged above the lower pressure plate and matched with the fourth adjusting screw, the lower end of the fourth adjusting screw is also provided with nut matched assembly, and the nut is placed in a hollow groove at the bottom end of the clamp body.
The processing method for the outer casing of the low-pressure turbine guide mainly comprises the following steps:
clamping a lower ring segment, loading the lower ring segment into a lower pressing plate, and adjusting a fourth adjusting screw to fix and press the lower ring segment;
step 2, clamping an upper ring segment, loading the upper ring segment into an upper pressing plate, adjusting a first adjusting screw and a second adjusting screw to fix the upper ring segment, wherein the lower ring segment and the upper ring segment are in I-shaped butt joint, and a welding gap is formed at the joint;
step 3, adjusting the weld gap, namely moving an adjusting block to adjust the weld gap through a third adjusting screw, wherein the adjusting range comprises an air vent, a protection groove and an air protection groove;
And 4, welding, namely after the welding seam gap is regulated to reach the standard width, accessing an argon source through an air inlet nozzle to ensure that the argon protection of the welding position is uniform.
Compared with the prior art, the invention has the following advantages:
1. The self structural design of the upper and lower ring segments of the low-conductivity outer casing is skillfully utilized, the clamp body with a universal structure is designed, the upper and lower ring segments are fixed, the upper and lower ring segments are adjustable through the upper and lower adjusting screws, the welding and the gas protection are carried out stably and conveniently, and the efficiency is greatly improved.
2. According to the invention, the adjusting screw and the adjusting block are arranged on the clamp body, so that the problem that the size of the welding seam is inconvenient to adjust when the upper ring section and the lower ring section of the low-conductivity outer casing are welded is effectively solved, and the welding gap and the welding quality are ensured to be stable and reliable.
3. According to the invention, through the through protection groove, the vent hole, the air protection groove and the air inlet nozzle, argon is introduced from the air inlet nozzle, so that the problems of uneven and not-in-place argon protection are effectively solved, and the stable and reliable welding quality is ensured.
4. The invention can be used for welding the upper and lower ring segments of the low-conductivity outer casing of different types, and has wide application range.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic illustration of the low pressure turbine pilot outer casing parts of the present invention;
FIG. 2 is a schematic view of the upper ring segment of the outer casing of the low pressure turbine pilot according to the present invention;
FIG. 3 is a schematic view of the lower ring segment of the outer casing of the low pressure turbine pilot according to the present invention;
FIG. 4 is a schematic view of a tooling fixture for a low pressure turbine pilot outer casing in accordance with the present invention;
FIG. 5 is a top view of an annular arrangement of clamped welded parts in accordance with the present invention;
In the figure, a 1-clamp body, a 2-lower pressing plate, a 3-first adjusting screw, a 4-fourth adjusting screw, a 5-third adjusting screw, a 6-adjusting block, a 7-vent hole, an 8-upper pressing plate, a 9-protection groove, a 10-air protection groove, an 11-air inlet nozzle, a 12-second adjusting screw, an A-upper ring section, a B-lower ring section and a C-weld joint gap.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this invention pertains are included within the scope of the present invention without departing from the above technical idea of the invention.
Referring to fig. 1-5, a processing device for an outer casing of a low-pressure turbine guide comprises a clamp body 1, an upper pressing plate 8 arranged above the clamp body 1 and a lower pressing plate 2 arranged below the upper pressing plate, wherein an adjusting block 6 is further arranged on the upper portion of the clamp body 1, the adjusting block 6 is a ring-shaped piece with a groove, the bottom of the groove is provided with a vent hole 7, two ends of the vent hole 7 are respectively provided with a protection groove 9 and a gas protection groove 10, an air inlet nozzle 11 communicated with the gas protection groove 10 is further arranged on the clamp body 1, and the air inlet nozzle 11 is used for air inlet to realize argon protection.
The structure of the clamp body 1 is matched with the structure of the upper ring section and the lower ring section of the low-conductivity outer casing.
The upper pressing plate 8 is matched with nuts through two screws, the upper pressing plate is arranged above the clamp body 1, the first adjusting screw 3 penetrates through the upper pressing plate and is embedded into the clamp body 1, the nuts are arranged at the joint positions of the upper pressing plate 8 and the plane above the clamp body 1 respectively, one end of the second adjusting screw 12 penetrates into the upper pressing plate 8, the other end of the second adjusting screw is arranged on the upper surface of the clamp body 1, and the nuts are matched at the joint position of the plane below the clamp body 1.
The fixture body 1 is attached to the adjusting block 6, and is provided with a protection groove 9, a vent hole 7, an air protection groove 10 and an air inlet nozzle 11 which are sequentially communicated from one end to the other end, wherein a channel is arranged between the air protection groove 10 and the air inlet nozzle 11.
A third adjusting screw 5 is arranged below the adjusting block 6 and is connected with the clamp body 1.
The lower pressing plate 2 is penetrated by a fourth adjusting screw 4 and is embedded into the clamp body 1, a nut is arranged above the lower pressing plate 2 and matched with the fourth adjusting screw 4, the lower end of the fourth adjusting screw 4 is also provided with nut matched assembly, and the nut is placed in a hollow groove at the bottom end of the clamp body 1.
The embodiment of the method for processing the outer casing of the low-pressure turbine guide comprises the following steps that a part to be welded is annular, a joint of an upper ring section A and a lower ring section B is annular, the materials of the upper ring section A and the lower ring section B which are welded are GH4648, and the wall thickness of the welded part is 1.3+/-0.1, and the method mainly comprises the following steps:
Clamping a lower ring section B, loading the lower ring section B into a lower pressing plate 2, and adjusting a fourth adjusting screw 2 to fix and press the lower ring section B;
Clamping an upper ring section A, loading the upper ring section A into an upper pressing plate 8, adjusting a first adjusting screw 3 and a second adjusting screw 12 to fix the upper ring section A, wherein a lower ring section B and the upper ring section A are in I-shaped butt joint, and a welding gap C is formed at the joint;
step 3, adjusting the weld joint clearance C, namely moving an adjusting block 6 to adjust the weld joint clearance C through a third adjusting screw 5, wherein the adjusting range comprises a vent hole 7, a protection groove 9 and an air protection groove 10;
And 4, welding, namely after the welding seam gap C is regulated to reach the standard width, connecting an argon source through the air inlet nozzle 11 to ensure that the argon protection of the welding position is uniform.
The device and the method for processing the outer casing of the low-pressure turbine guide are described in detail, specific examples are applied to illustrate the structure and the working principle of the invention, and the description of the above embodiments is only used for helping to understand the method and the core idea of the invention. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present invention without departing from the principles of the invention, and such improvements and modifications fall within the scope of the appended claims.
Claims (2)
1. The machining device for the low-pressure turbine guider outer casing is characterized by comprising a clamp body (1), an upper pressing plate (8) arranged at the top of the clamp body (1) and a lower pressing plate (2) arranged at the bottom of the clamp body, wherein an adjusting block (6) is further arranged on the inner side of the clamp body (1), a vent hole (7) is formed in the adjusting block (6), protection grooves (9) and air protection grooves (10) are respectively formed in two ends of the vent hole (7), an air inlet nozzle (11) communicated with the air protection grooves (10) is further arranged on the clamp body (1), and the structure of the clamp body (1) is matched with the structure of the upper ring section and the lower ring section of the low-pressure turbine guider outer casing;
the upper pressing plate (8) is matched with the screw caps through two screws, the upper pressing plate is arranged above the clamp body (1), the first adjusting screw (3) penetrates through the upper pressing plate and is embedded into the clamp body (1), the screw caps are respectively arranged at the joint positions of the upper pressing plate (8) and the plane above the clamp body (1), one end of the second adjusting screw (12) penetrates through the upper pressing plate (8), the other end of the second adjusting screw is arranged on the upper surface of the clamp body (1), and the screw caps are matched at the joint positions of the plane below the clamp body (1);
The fixture body (1) is attached to the adjusting block (6), a protection groove (9), a vent hole (7), an air protection groove (10) and an air inlet nozzle (11) are sequentially communicated from one end to the other end, and a channel is arranged between the air protection groove (10) and the air inlet nozzle (11) for communication;
The lower part of the adjusting block (6) is provided with a third adjusting screw (5) which is connected with a boss on the inner side of the clamp body (1), the lower pressing plate (2) is penetrated by a fourth adjusting screw (4) and is embedded into the clamp body (1), a screw cap is arranged above the lower pressing plate (2) and is matched with the fourth adjusting screw (4), the lower end of the fourth adjusting screw (4) is also provided with a screw cap matched assembly, and the screw cap is placed in a hollow groove at the bottom end of the clamp body (1).
2. A processing method for a low-pressure turbine guide outer casing, which is applied to the processing device of the low-pressure turbine guide outer casing according to claim 1, and is characterized by mainly comprising the following steps:
Step 1, clamping a lower ring section (B), loading the lower ring section (B) into a lower pressing plate (2), and adjusting a fourth adjusting screw (4) to fix and press the lower ring section (B);
clamping an upper ring section (A), loading the upper ring section (A) into an upper pressing plate (8), adjusting a first adjusting screw (3) and a second adjusting screw (12) to fix the upper ring section (A), and abutting the lower ring section (B) and the upper ring section (A) in an I shape, wherein a welding gap (C) is formed at the joint;
step 3, adjusting the weld joint gap (C), and moving an adjusting block (6) to adjust the weld joint gap (C) through a third adjusting screw (5), wherein the adjusting range comprises an air vent (7), a protection groove (9) and an air protection groove (10);
And 4, welding, namely after the welding seam gap (C) is regulated to reach the standard width, accessing an argon source through an air inlet nozzle (11) to ensure that the argon protection of the welding position is uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311032775.2A CN116900456B (en) | 2023-08-16 | 2023-08-16 | A processing device and method for low-pressure turbine guide vane outer casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311032775.2A CN116900456B (en) | 2023-08-16 | 2023-08-16 | A processing device and method for low-pressure turbine guide vane outer casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116900456A CN116900456A (en) | 2023-10-20 |
| CN116900456B true CN116900456B (en) | 2025-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311032775.2A Active CN116900456B (en) | 2023-08-16 | 2023-08-16 | A processing device and method for low-pressure turbine guide vane outer casing |
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| CN (1) | CN116900456B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119159287A (en) * | 2024-10-19 | 2024-12-20 | 中国航发贵州黎阳航空动力有限公司 | A fixture and method for welding a mounting seat of a combustion chamber casing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128651A (en) * | 2018-10-11 | 2019-01-04 | 中国航发航空科技股份有限公司 | A kind of engine by-pass air duct casing welder, welding method |
| CN115846833A (en) * | 2022-12-07 | 2023-03-28 | 中国航发贵州黎阳航空动力有限公司 | Gas shield clamp for welding annular weld joint in narrow space |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8408011B2 (en) * | 2009-04-30 | 2013-04-02 | Pratt & Whitney Canada Corp. | Structural reinforcement strut for gas turbine case |
| CN209867992U (en) * | 2019-03-25 | 2019-12-31 | 沈阳黎明法拉航空动力技术工程有限公司 | A special clamp for high-pressure turbine case |
| CN116275423B (en) * | 2023-04-20 | 2025-08-19 | 中国航发航空科技股份有限公司 | Argon arc welding device and welding method for air outlet of turbine casing of aero-engine |
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2023
- 2023-08-16 CN CN202311032775.2A patent/CN116900456B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128651A (en) * | 2018-10-11 | 2019-01-04 | 中国航发航空科技股份有限公司 | A kind of engine by-pass air duct casing welder, welding method |
| CN115846833A (en) * | 2022-12-07 | 2023-03-28 | 中国航发贵州黎阳航空动力有限公司 | Gas shield clamp for welding annular weld joint in narrow space |
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| CN116900456A (en) | 2023-10-20 |
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