CN115302046B - Continuous welding tool based on argon arc welding - Google Patents
Continuous welding tool based on argon arc welding Download PDFInfo
- Publication number
- CN115302046B CN115302046B CN202210904718.8A CN202210904718A CN115302046B CN 115302046 B CN115302046 B CN 115302046B CN 202210904718 A CN202210904718 A CN 202210904718A CN 115302046 B CN115302046 B CN 115302046B
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- clamping
- wall shell
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- 238000003466 welding Methods 0.000 title claims abstract description 150
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 40
- 238000003825 pressing Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005056 compaction Methods 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
- B23K9/287—Supporting devices for electrode holders
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The application provides a continuous welding tool based on argon arc welding, which comprises the following components: the pressing structure is arranged outside the conical thin-wall shell and is used for applying downward pressing force to the conical thin-wall shell; the supporting structure is connected with the pressing structure and is used for supporting the inner surface of the conical thin-wall shell; the welding gun clamping arm is used for clamping a welding gun, and the welding wire clamping arm is used for clamping welding wires; the welding gun and the welding wire can rotate relative to the conical thin-wall shell, and the welding gun and the welding wire can face the welding position on the conical thin-wall shell; the welding tool based on argon arc welding provided by the application realizes uninterrupted and micro-deformation welding of the thin-wall shell structural part of the conical closed structure, and realizes the functions of single operation, deformation prevention support, compaction, uninterrupted welding and the like.
Description
Technical Field
The application belongs to the technical field of argon arc welding of thin-wall shell parts, and particularly relates to process equipment which can finish uninterrupted welding of a conical closed structure thin-wall shell on automatic welding equipment or an operating table and can control welding deformation within a tolerance range.
Background
At present, most of welding for a thin-wall shell with a conical closed structure is carried out by inner cavity supporting and positioning and intermittent welding after the outer end is pressed, or manual pressing and matching are carried out by one operator, and the other operator holds a welding gun and a welding wire by hand to complete continuous welding.
However, the intermittent welding process scheme may cause the phenomena of uneven filling of the welding flux in the welding seam, local heating and concentration, and the like, and the phenomena of local collapse, undercut, slag inclusion and the like of the welding part are easily caused, so that the welding quality is affected. Although continuous welding can be realized by the technical scheme of multi-person cooperative welding, the requirement on operators is high, the technical operation is complex, the labor intensity of workers is high, and the welding efficiency is affected.
Disclosure of Invention
In view of the above technical problems, the present application provides a continuous welding tool based on argon arc welding, which can continuously weld a tapered thin-walled shell, the welding tool comprising:
the pressing structure is arranged outside the conical thin-wall shell and is used for applying downward pressing force to the conical thin-wall shell;
the supporting structure is connected with the pressing structure and is used for supporting the inner surface of the conical thin-wall shell;
the welding gun clamping arm is used for clamping a welding gun, and the welding wire clamping arm is used for clamping welding wires; the welding gun and the welding wire can rotate relative to the conical thin-wall shell, and the welding gun and the welding wire can face the welding position on the conical thin-wall shell.
Preferably, the pressing structure includes:
a pressing plate with an annular structure;
the buckle cover is connected with the pressure plate and forms an open cavity;
the retainer is arranged in the opening cavity; wherein the retainer comprises a steel ball;
the pressing sleeve is provided with one end arranged in the open cavity; wherein the welding gun clamping arm and the welding wire clamping arm are arranged on the pressing sleeve;
the rotatable pressing plate is connected with the other end of the pressing sleeve;
and the pressing block is connected with the rotatable pressing plate through a bearing and is used for applying downward pressing force to the conical thin-wall shell.
Preferably, the welding gun clamping arm comprises:
the first arm is arranged on the pressing sleeve;
the first rotating arm is movably connected with the first arm;
the clamping arm is movably connected with the first rotating arm;
the V-shaped block is connected with the clamping arm through a stud bolt and a nut and forms a clamping opening; the clamping opening is used for clamping a handle of the welding gun.
Preferably, the wire-holding arm comprises:
the second arm is arranged on the pressing sleeve;
the second rotating arm is rotationally connected with the second arm;
the wire feeding arm is connected with the second rotating arm at one end;
the roller is arranged at the other end of the wire feeding arm.
Preferably, the support structure comprises:
the base comprises an air inlet hole and is arranged on the working turntable;
the anti-shape cone is arranged on the base and is used for supporting the inner surface of the conical thin-wall shell;
and one end of the upright post is arranged on the base, and the other end of the upright post is connected with the pressure plate through a screw.
Preferably, the shape-preventing cone is provided with an argon flow passage and an argon flow passage hole arranged in the argon flow passage;
the position of the argon flow passage corresponds to the welding position of the conical thin-wall shell.
Preferably, the welding tool further comprises:
the connecting bolt is used for connecting the pressing sleeve, the rotatable pressing plate and the pressing block; and removing the connecting bolt during the welding process.
Preferably, the base further comprises:
and the anti-lost threaded hole is used for placing the connecting bolt.
Preferably, the press sleeve comprises:
a cylindrical portion;
a flared portion, one end of which is connected to the cylindrical portion;
the edge is connected with the other end of the flaring part; wherein, the cylinder portion and the expansion portion are provided with through holes.
The beneficial technical effects of the application are as follows:
the welding tool based on argon arc welding provided by the application realizes uninterrupted and micro-deformation welding of the thin-wall shell structural parts of the conical closed structure, realizes the functions of single operation, deformation-preventing support, compaction, uninterrupted welding and the like, simultaneously gives consideration to convenience in the processes of tool taking, assembly and the like in the process preparation stage and the inventory stage, improves the welding efficiency of the shell, and provides tool guarantee for improving the weld quality.
Drawings
FIG. 1 is a schematic structural view of a continuous welding tool based on argon arc welding according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a compression structure according to an embodiment of the present application;
FIG. 3 is a cross-sectional view of a support structure according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a press sleeve according to an embodiment of the present application;
wherein: 1-a base; 2-cone blocks; 3-a first screw; 4-briquetting; 5-thrust ball bearings; 6-a rotatable platen; 7-pressing the sleeve; 8-a retainer; 9-steel ball; 10-a second screw; 11-pressing plate; 12-a buckle cover; 13-stand columns; 14-a third screw; 15-a conical thin-walled shell; 16-welding part; 17-connecting bolts; 18-an anti-lost threaded hole; 19-an anti-shape cone; 20-argon flow passage; 21-argon flow passage holes; 22-axial positioning; 23-auxiliary positioning; 24-a first arm; 25-a first swivel arm; 26-clamping arms; 27-V-shaped blocks; 28-welding gun handle; 29-a second arm; 30-a second swivel arm; 31-a wire feeding arm; 32-roller.
Detailed Description
The application will now be described in detail with reference to figures 1-4 and the accompanying examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
In order to solve the contradiction between the two necessary functions of the external compression structure and the external uninterrupted welding, two sets of structures of retainers and steel balls (GB/T308)/thrust ball bearings (GB/T301) are selected.
In the embodiment of the application, the compacting function: when downward pressing force is applied to the pressure plate, the pressing block applies downward pressing force to the outer wall of the cone part through force transmission.
Wherein, rotatable function: through the characteristics of the retainer, the steel ball and the thrust ball bearing, under the condition that the pressure plate and the pressure block are subjected to axial force and do not rotate around the axis, the pressure sleeve and the rotatable pressure plate can not only transmit the axial force, but also can freely rotate around the axis according to the requirements of operators in the technical operation process, so that an interference part (a prismatic structure in the pressure sleeve) of the external compression structure for uninterrupted welding can relatively rotate along with a welding gun-welding wire, and the uninterrupted welding function is realized.
Wherein, to core structure, design out the structure of adaptation bolted connection respectively on rotatable clamp plate, briquetting.
When the welding process is ready and after the welding process is finished, the rotatable pressing plate is connected with the pressing block by using bolts (GB/T5784), so that the integrity of the tool in a to-be-used state and an inventory state is ensured, and the tool is convenient to use. When the welding process is performed, the connecting bolt 17 should be removed to ensure the rotation function. The bolts can be assembled in the anti-lost threaded holes on the base, so that scattered parts are prevented from being lost.
Wherein, on the profiling cone, an argon gas runner with the axial dimension of about 10mm is circumferentially designed, and a plurality of argon gas runner holes with the diameter of about 2-3mm are uniformly formed around the welding bead.
In order to ensure the welding requirement of the first-stage welding seam, argon is usually applied to the other end of the welding seam to protect the welding seam by argon arc welding. In order to prevent the influence of the argon gas unable fully protection welding bead that the oversized cavity caused, design argon gas runner and small-size runner hole, can make the even direct injection welding seam of argon gas along a plurality of runner holes in the cavity, play the guard action, ensure first-level welding seam requirement.
The positioning shaft diameter only ensures that the radial position is correct, the supporting gap can be adjusted through the axial movement of the conical structure due to the characteristics of the conical structure, the influence of large diameter size tolerance on the supporting degree of the welding part of the stamping part can be avoided, the inner conical surface of the part is completely supported through the axial movement of the profiling cone and the conical surface of the part, and the effect of controlling the deformation of the part in the welding process is achieved.
The welding gun and the welding wire are fixed on the pressing sleeve through the two clamping arms, so that the welding gun and the welding wire can rotate together with the pressing sleeve, and uninterrupted welding of parts can be completed only by manually rotating the pressing sleeve.
It should be noted that the present application is also applicable to other fields in which external compression interferes with external rotary machining.
The welding tool based on argon arc welding provided by the application realizes uninterrupted and micro-deformation welding of the conical closed thin-wall shell structural part, realizes the functions of single operation, deformation-preventing support, compaction, uninterrupted welding and the like, simultaneously gives consideration to convenience in the processes of tool taking, assembly and the like in the process preparation stage and the inventory stage, improves the welding efficiency of the shell, and provides tool guarantee for improving the weld quality.
In other embodiments of the application, the base 1 is positioned with a work turret (welder/bench worker equipment not described in detail) by A, B datum, clamped by a work turret mating platen mechanism.
Wherein, core mechanism: comprises a pressing block 4, a thrust bearing 5, a rotatable pressing plate 6, a pressing sleeve 7, a retainer 8, a steel ball 9, a pressing plate 11 and a buckle cover 12.
Further, when the second screw 10 is screwed to uniformly apply a vertical downward pressing force to the pressing plate 11, the pressing force is transmitted through the steel ball 9- > pressing sleeve 7- > rotatable pressing plate 6- > thrust ball bearing 5- > pressing block 4, so that the pressing block 4 applies a downward inward wrapping uniform pressing force to the outer wall of the cone part.
Further, by utilizing the characteristics of the retainer, the steel ball and the thrust ball bearing, under the condition that the pressure plate 11 and the pressure block 4 are subjected to axial force and do not rotate around the axis, the pressure sleeve 7 and the rotatable pressure plate 6 can not only transmit the axial force, but also can freely rotate around the axis according to the requirements of operators in the technical operation process, so that the interference part (the prismatic structure in the pressure sleeve) of the external compression structure to uninterrupted welding can relatively rotate along with the welding gun and the welding wire (the two groups of clamping arm structures are respectively clamped), and the uninterrupted welding function is realized.
In other embodiments of the application, the support structure of the contoured cone consists essentially of the cone blocks 2. Based on the axial positioning of the base 1 phi D2, the characteristics of the conical structure are utilized, so that the conical part can be perfectly attached to the conical structure at the upper end of the conical block 2 through axial movement, and the outer end can be perfectly attached to the outer conical surface of the part through force transmission (described in detail in the core application point of the device) by screwing the second screw 10.
Wherein, the advantage of toper support/compress tightly structure lies in: the positioning and clamping gap is eliminated, and the radial and axial auxiliary positioning effects can be achieved; the influence of large diameter size tolerance (the common tolerance zone is more than 1 mm) on the compaction function of the welding part of the thin-wall stamping part is avoided; the wrapping compaction of the rotary structure is realized for the rotary parts, isotropy is realized for the compaction force, and the compaction effect is good.
Wherein, the adjustable welder centre gripping arm and send welding wire centre gripping arm mechanism that is fixed in on pressing the cover. The welding gun clamping arm mainly comprises a first arm 24, a rotating shaft, a first rotating arm 25, a clamping arm 26, nuts, stud bolts, V-shaped blocks 27, screws and the like.
The welding wire feeding clamping arm mainly comprises a second arm 29, a rotating shaft, a second rotating arm 30, screws, a wire feeding arm 31, rollers 32 and the like.
In one possible implementation, the welding gun and welding wire are positioned on the press sleeve 7 by an adjustable welding gun clamping arm and welding wire feeding clamping arm mechanism, and can synchronously rotate along with the press sleeve 7 around the rotation axis of the conical part. The operator only needs to manually rotate the pressing sleeve 7, and can finish uninterrupted welding of the outer circumference of the conical part under the cooperation of automatic wire feeding.
In other embodiments of the application, the retainer 8+steel ball 9 working cavity is formed by the vertical outer surrounding structure formed by the pressure plate 11 and the buckle cover 12, and the thrust ball bearing 5 working cavity is formed by the vertical outer surrounding structure formed by the pressure block 4 and the rotatable pressure plate 6, so that the risk of loose falling of the structure is avoided, and the structural performance is ensured.
In addition, when and after the welding process is prepared, the rotatable pressing plate 6 and the pressing block 4 are connected by bolts (see fig. 1), so that the integrity of the tool in a to-be-used state and an inventory state is ensured, and the tool is convenient to use. When the welding process is carried out, the connecting bolt is removed, so that the rotation function is ensured. The bolts can be assembled in the anti-lost threaded holes on the base, so that scattered parts are prevented from being lost.
In one possible implementation, an argon gas flow passage with the axial dimension of about 10mm is circumferentially designed on the profiling cone, and a plurality of argon gas flow passage holes with the diameter of about phi 2-phi 3mm are uniformly formed around the welding bead.
In order to ensure the welding requirement of the first-stage welding seam, argon is usually filled into the other end of the welding seam to protect the welding seam. In order to prevent the influence of the argon gas unable fully protection welding bead that the oversized cavity caused, design argon gas runner and small-size runner hole, can make the even direct injection welding seam of argon gas along a plurality of runner holes in the cavity, play the guard action, ensure first-level welding seam requirement.
Claims (8)
1. A continuous welding tool based on argon arc welding, characterized in that the welding tool is capable of continuously welding a tapered thin-walled shell, the welding tool comprising:
the pressing structure is arranged outside the conical thin-wall shell and is used for applying downward pressing force to the conical thin-wall shell;
the supporting structure is connected with the pressing structure and is used for supporting the inner surface of the conical thin-wall shell;
the welding gun clamping arm is used for clamping a welding gun, and the welding wire clamping arm is used for clamping welding wires; the welding gun and the welding wire can rotate relative to the conical thin-wall shell, and the welding gun and the welding wire can face the welding position on the conical thin-wall shell;
the compacting structure further includes:
a pressing plate with an annular structure;
the buckle cover is connected with the pressure plate and forms an open cavity;
the retainer is arranged in the opening cavity; wherein the retainer comprises a steel ball;
the pressing sleeve is provided with one end arranged in the open cavity; wherein the welding gun clamping arm and the welding wire clamping arm are arranged on the pressing sleeve;
the rotatable pressing plate is connected with the other end of the pressing sleeve;
the first pressing block is connected with the rotatable pressing plate through a bearing and is used for applying downward pressing force to the conical thin-wall shell.
2. The argon arc welding-based continuous welding tool of claim 1, wherein the welding gun grip arm comprises:
the first arm is arranged on the pressing sleeve;
the first rotating arm is movably connected with the first arm;
the clamping arm is movably connected with the first rotating arm;
the V-shaped block is connected with the clamping arm through a stud bolt and a nut and forms a clamping opening; the clamping opening is used for clamping a handle of the welding gun.
3. The argon arc welding-based continuous welding tool of claim 1, wherein the wire-clamping arm comprises:
the second arm is arranged on the pressing sleeve;
the second rotating arm is rotationally connected with the second arm;
the wire feeding arm is connected with the second rotating arm at one end;
the roller is arranged at the other end of the wire feeding arm.
4. The argon arc welding-based continuous welding tool of claim 1, wherein the support structure comprises:
the base comprises an air inlet hole and is arranged on the working turntable;
the anti-shape cone is arranged on the base and is used for supporting the inner surface of the conical thin-wall shell;
and one end of the upright post is arranged on the base, and the other end of the upright post is connected with the pressure plate through a screw.
5. The continuous welding tool based on argon arc welding according to claim 4, wherein an argon gas flow passage and an argon gas flow passage hole arranged in the argon gas flow passage are arranged on the anti-shape cone;
the position of the argon flow passage corresponds to the welding position of the conical thin-wall shell.
6. The argon arc welding-based continuous welding tool of claim 5, further comprising:
the connecting bolt is used for connecting the pressing sleeve, the rotatable pressing plate and the first pressing block; and removing the connecting bolt during the welding process.
7. The argon arc welding-based continuous welding tool of claim 6, wherein the base further comprises:
and the anti-lost threaded hole is used for placing the connecting bolt.
8. The argon arc welding-based continuous welding tool of claim 1, wherein the press sleeve comprises:
a cylindrical portion;
a flared portion, one end of which is connected to the cylindrical portion;
the edge is connected with the other end of the flaring part; wherein, the cylinder portion and the expansion portion are provided with through holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210904718.8A CN115302046B (en) | 2022-07-29 | 2022-07-29 | Continuous welding tool based on argon arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210904718.8A CN115302046B (en) | 2022-07-29 | 2022-07-29 | Continuous welding tool based on argon arc welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115302046A CN115302046A (en) | 2022-11-08 |
| CN115302046B true CN115302046B (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210904718.8A Active CN115302046B (en) | 2022-07-29 | 2022-07-29 | Continuous welding tool based on argon arc welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115302046B (en) |
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| CN107962418A (en) * | 2017-11-13 | 2018-04-27 | 首都航天机械公司 | A kind of tank bores bottom inner support type tire accurate lifting positioning device |
| WO2020161143A1 (en) * | 2019-02-04 | 2020-08-13 | Mt Aerospace Ag | Apparatus for clamping and orienting thin-walled dome segments and use thereof |
| CN213289152U (en) * | 2020-10-13 | 2021-05-28 | 辽宁福鞍燃气轮机有限公司 | Heat shield welding auxiliary tool for annular thin-wall part of gas turbine |
| CN113878280A (en) * | 2021-09-22 | 2022-01-04 | 江苏振江新能源装备股份有限公司 | Welding deformation preventing device for large megawatt rotor room cone |
| CN216227788U (en) * | 2021-10-14 | 2022-04-08 | 成都旭光电子股份有限公司 | Die for girth welding between cylindrical thin-wall part and annular part |
-
2022
- 2022-07-29 CN CN202210904718.8A patent/CN115302046B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203541918U (en) * | 2013-11-05 | 2014-04-16 | 中国航天科技集团公司长征机械厂 | Device for rapidly positioning, clamping and welding corrugated plates |
| CN103551753A (en) * | 2013-11-06 | 2014-02-05 | 中国南方航空工业(集团)有限公司 | Welding method for drum-shaped thin-wall part of aircraft engine and clamp used in welding method |
| CN106736155A (en) * | 2016-12-23 | 2017-05-31 | 贵州黎阳航空动力有限公司 | A kind of small-diameter, thin-walled cylindrical part weld seam support fixture |
| CN107962418A (en) * | 2017-11-13 | 2018-04-27 | 首都航天机械公司 | A kind of tank bores bottom inner support type tire accurate lifting positioning device |
| WO2020161143A1 (en) * | 2019-02-04 | 2020-08-13 | Mt Aerospace Ag | Apparatus for clamping and orienting thin-walled dome segments and use thereof |
| CN213289152U (en) * | 2020-10-13 | 2021-05-28 | 辽宁福鞍燃气轮机有限公司 | Heat shield welding auxiliary tool for annular thin-wall part of gas turbine |
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| CN216227788U (en) * | 2021-10-14 | 2022-04-08 | 成都旭光电子股份有限公司 | Die for girth welding between cylindrical thin-wall part and annular part |
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| CN115302046A (en) | 2022-11-08 |
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