CN107838571B - Welding device and welding method for slender thin-wall hollow shaft - Google Patents
Welding device and welding method for slender thin-wall hollow shaft Download PDFInfo
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- CN107838571B CN107838571B CN201710820195.8A CN201710820195A CN107838571B CN 107838571 B CN107838571 B CN 107838571B CN 201710820195 A CN201710820195 A CN 201710820195A CN 107838571 B CN107838571 B CN 107838571B
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- welding
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- lower shaft
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- positioning sleeve
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a welding device and a welding method for an elongated thin-wall hollow shaft, wherein the welding device comprises: a portal frame; the assembly buttress is hollow in the center, the hollow part can be used for placing a lower shaft to be welded, a plurality of upper threaded holes are formed in the side wall of the upper part of the assembly buttress, a plurality of lower threaded holes are formed in the side wall of the lower part of the assembly buttress, and a plurality of measuring perforations are formed in the assembly buttress; the top of the steel wire rope is fixed with the portal frame, and the bottom of the steel wire rope is suspended with a heavy hammer; the positioning sleeve is placed on the assembly buttress, the lower shaft can be inserted into the positioning sleeve, and the positioning sleeve can support the convex ring at the upper part of the lower shaft; the height adjusting device is uniformly arranged between the positioning sleeve and the assembling buttress; the upper shaft fixing device is fixed at the top of the portal frame, the bottom of the upper shaft is sleeved at the top of the lower shaft, and a welding gap is reserved between the upper shaft and the lower shaft; one end of the micrometer touches the upper shaft or the lower shaft, and the other end touches the steel wire rope. The invention has the advantages of accurate and convenient measurement, accurate understanding of welding deformation and timely adjustment.
Description
Technical Field
The invention relates to a welding device and a welding method for an elongated thin-wall hollow shaft, and belongs to the technical field of precision welding.
Background
In power station equipment, a main shaft is a high-speed rotating part in a high-temperature state, the manufacturing requirement on the main shaft is very high, the main shaft is specifically an austenitic stainless steel hollow long shaft, the main shaft is formed by welding 4 sections, and the concentricity of an inner circle and an outer circle after the whole welding is completed is required to be within 0.2 mm. The welding process has extremely high requirements, and the greatest difficulty in the construction process is to monitor the welding deformation amount and the deflection direction of the slender shaft in real time.
Disclosure of Invention
The invention provides a welding device for an elongated thin-wall hollow shaft. The welding equipment is matched, and the welding sequence is adjusted according to the actually measured welding deformation and the deflection direction, so that the purpose of accurately controlling the welding deformation of the slender hollow shaft is realized.
The technical scheme of the invention is as follows:
an elongated thin-walled hollow shaft welding device, comprising:
the portal frame is fixed on the foundation;
the assembling buttress is fixed on the foundation and positioned below the portal frame, the center of the assembling buttress is hollowed out, the hollowed-out part can be used for placing a lower shaft to be welded, a plurality of upper threaded holes are formed in the side wall of the upper part of the assembling buttress, a plurality of lower threaded holes are formed in the side wall of the lower part of the assembling buttress, and a plurality of measuring perforations are formed in the assembling buttress;
the lower shaft adjusting screws are multiple and can be screwed into the upper threaded holes and the lower threaded holes to position the lower shaft in the vertical direction;
the top of the steel wire ropes is fixed with the portal frame, and the bottom of the steel wire ropes is suspended with heavy weights;
the positioning sleeve is placed on the assembly buttress, the lower shaft can be inserted into the positioning sleeve, and the positioning sleeve can support the convex ring at the upper part of the lower shaft;
the height adjusting devices are uniformly arranged between the positioning sleeve and the assembling buttress and can adjust the height of the positioning sleeve;
the upper shaft fixing devices are fixed at the top of the portal frame and can fix the periphery of the upper part of an upper shaft to be welded inserted into the portal frame, the bottom of the upper shaft is sleeved at the top of a lower shaft, and a welding gap is reserved between the upper shaft and the lower shaft;
one end of the micrometer is contacted with the upper shaft or the lower shaft, and the other end is contacted with the steel wire rope, wherein the micrometer for measuring the lower shaft is inserted into the measuring perforation of the assembly buttress.
Preferably, an oil drum is placed on the foundation, and the heavy hammer is immersed in the oil drum.
Preferably, at least four steel wires are provided.
In order to monitor displacement in multiple directions, at least sixteen micrometer shafts are arranged, eight micrometer shafts are arranged on the upper shaft and the lower shaft respectively, at least four micrometer shafts are arranged on the upper portion and the lower portion of the upper shaft respectively, and at least four micrometer shafts are arranged on the upper portion and the lower portion of the lower shaft respectively.
Preferably, the height adjusting device includes:
the adjusting frame is fixed on the assembling buttress and is provided with an inclined plane and a vertical plane perpendicular to the inclined plane, the inclined plane is provided with a sliding groove, and the vertical plane is provided with a threaded hole;
the wedge block is placed on the inclined plane 61, the bottom surface of the wedge block is provided with a sliding block matched with the sliding groove, and the wedge block can only move along the sliding groove;
the adjusting screw is screwed into the threaded hole in the vertical plane, the head of the adjusting screw is rotatably connected with the wedge block, and the position of the wedge block can be adjusted by rotating the adjusting screw, so that the height of the positioning sleeve can be adjusted.
A method of welding an elongated thin walled hollow shaft comprising the elongated thin walled hollow shaft welding apparatus of claim 5 and upper and lower shafts to be welded comprising the steps of:
step A, inserting a lower shaft into a positioning sleeve, wherein a space is reserved at the bottom of the lower shaft;
step B, respectively rotating a plurality of adjusting screws according to the measured size of the micrometer to enable the lower shaft to be vertically installed and fixed through the plurality of lower shaft adjusting screws, wherein the plurality of adjusting screws and the plurality of lower shaft adjusting screws are required to be rotated for a plurality of times;
step C, uniformly spot-welding a plurality of welding spots through welding gaps, and preliminarily positioning an upper shaft and a lower shaft;
step D, finding out the maximum offset position E of the upper shaft relative to the lower shaft when the upper shaft and the lower shaft are cooled according to the measured size of the micrometer, extending and welding towards two ends by taking the maximum offset position E as the center to form a welding section H, and continuously finding out the maximum offset position E, continuously welding to form the welding section H, wherein the solder filling quantity of the welding section H in the welding gap is not more than two thirds of the maximum weldable space in the welding section H;
and E, filling all the welding gap spaces which are not filled with welding materials by welding once.
The greater the offset of the maximum offset position E, the more solder filling in the solder segment H.
The invention has the advantages of simple structure, accurate and convenient measurement, accurate understanding of welding deformation and timely adjustment, and ensures that the welded product is qualified.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural view of the upper and lower shafts to be welded according to the present invention.
Fig. 4 is a schematic structural view of the height adjusting device of the present invention.
Fig. 5 is a schematic view of the position structure of the maximum offset position E and the welding section H according to the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings:
as shown, an elongated thin-walled hollow shaft welding device, comprising:
the portal frame 1 is fixed on the foundation;
the assembling buttress 5 is fixed on the foundation and positioned below the portal frame 1, the center of the assembling buttress 5 is hollowed, the hollowed part can be used for placing a lower shaft 11 to be welded, a plurality of upper threaded holes are formed in the side wall of the upper part of the assembling buttress 5, a plurality of lower threaded holes are formed in the side wall of the lower part of the assembling buttress 5, and a plurality of measuring perforations are formed in the assembling buttress 5;
a plurality of lower shaft adjusting screws 8 which can be screwed into the upper threaded holes and the lower threaded holes to position the lower shaft 11 in the vertical direction;
the top of the steel wire ropes 2 is fixed with the portal frame 1, and the bottom of the steel wire ropes is suspended with the heavy weights 4;
the positioning sleeve 7 is placed on the assembly buttress 5, the lower shaft 11 can be inserted into the positioning sleeve 7, and the positioning sleeve 7 can support the convex ring 13 at the upper part of the lower shaft 11;
the height adjusting devices 6 are uniformly arranged between the positioning sleeve 7 and the assembling buttress 5 and can adjust the height of the positioning sleeve 7;
the upper shaft fixing devices 9 are fixed at the top of the portal frame 1 and can fix the periphery of the upper part of an upper shaft 12 to be welded inserted into the portal frame 1, the bottom of the upper shaft 12 is sleeved at the top of a lower shaft 11, and a welding gap 10 is reserved between the upper shaft 12 and the lower shaft 11;
and one end of the micrometer is contacted with the upper shaft 12 or the lower shaft 11, and the other end is contacted with the steel wire rope 2, wherein the micrometer for measuring the lower shaft 11 is inserted into the measuring perforation of the assembly buttress 5.
An oil drum is placed on the foundation, and the heavy hammer 4 is immersed in the oil drum.
The wire ropes 2 are provided with at least four.
At least sixteen micrometers are provided, eight upper shafts 12 and eight lower shafts 11 are respectively arranged, at least four upper shafts 12 are respectively arranged at the upper part and the lower part of the upper shafts 12, and at least four lower shafts 11 are respectively arranged at the upper part and the lower part of the lower shafts.
The height adjusting device 6 includes:
the adjusting frame is fixed on the assembling buttress 5, the adjusting frame is provided with an inclined plane 61 and a vertical plane 62 vertical to the inclined plane 61, the inclined plane 61 is provided with a chute, and the vertical plane 62 is provided with a threaded hole;
the wedge block 64 is placed on the inclined plane 61, a sliding block matched with the sliding groove is arranged on the bottom surface of the wedge block 64, and the wedge block 64 can only move along the sliding groove;
the adjusting screw 63 is screwed into the threaded hole of the vertical surface 62, the head of the adjusting screw 63 is rotatably connected with the wedge block 64, and the position of the wedge block 64 can be adjusted by rotating the adjusting screw 63, so that the height of the positioning sleeve 7 can be adjusted.
The welding method of the slender thin-wall hollow shaft comprises a slender thin-wall hollow shaft welding device, an upper shaft 12 and a lower shaft 11 which are required to be welded, and comprises the following steps:
step A, inserting a lower shaft 11 into a positioning sleeve 7, wherein a space is reserved at the bottom of the lower shaft 11;
step B, respectively rotating a plurality of adjusting screws 63 according to the measured size of the micrometer, so that the lower shaft 11 is vertically installed and fixed through a plurality of lower shaft adjusting screws 8, and the plurality of adjusting screws 63 and the plurality of lower shaft adjusting screws 8 are required to be rotated for a plurality of times;
step C, uniformly spot-welding a plurality of welding spots through the welding gaps 10, and preliminarily positioning the upper shaft 12 and the lower shaft 11;
step D, finding the maximum offset position E of the upper shaft 12 relative to the lower shaft 11 when the upper shaft 12 and the lower shaft 11 are cooled according to the measured size of the micrometer, extending and welding towards two ends by taking the maximum offset position E as the center to form a welding section H, and continuously finding the maximum offset position E, continuously welding to form the welding section H, wherein the filling quantity of the welding material of the welding section H in the welding gap 10 is not more than two thirds of the maximum weldable space in the welding section H;
and E, filling the space of the welding gap 10 which is not filled with welding material by welding all the space at one time.
The more the maximum offset position E is, the more the solder filling in the solder segment H is.
Claims (5)
1. An elongated thin-walled hollow shaft welding device, comprising:
the portal frame (1) is fixed on the foundation;
the assembling buttress (5) is fixed on a foundation and is positioned below the portal frame (1), the center of the assembling buttress (5) is hollowed, the hollowed part can be used for placing a lower shaft (11) to be welded, a plurality of upper threaded holes are formed in the side wall of the upper part of the assembling buttress (5), a plurality of lower threaded holes are formed in the side wall of the lower part of the assembling buttress (5), and a plurality of measuring through holes are formed in the assembling buttress (5);
the lower shaft adjusting screws (8) are multiple and can be screwed into the upper threaded holes and the lower threaded holes to position the lower shaft (11) in the vertical direction;
the steel wire ropes (2) are multiple, the top of the steel wire ropes is fixed with the portal frame (1), and the bottom of the steel wire ropes is suspended with the heavy weights (4);
the positioning sleeve (7) is placed on the assembly buttress (5), the lower shaft (11) can be inserted into the positioning sleeve (7), and the positioning sleeve (7) can support the convex ring (13) at the upper part of the lower shaft (11);
the height adjusting devices (6) are uniformly arranged between the positioning sleeve (7) and the assembling buttresses (5) and can adjust the height of the positioning sleeve (7);
the upper shaft fixing devices (9) are fixed at the top of the portal frame (1) and can fix the periphery of the upper part of an upper shaft (12) to be welded inserted into the portal frame (1), the bottom of the upper shaft (12) is sleeved at the top of a lower shaft (11), and a welding gap (10) is reserved between the upper shaft (12) and the lower shaft (11);
one end of the micrometer touches the upper shaft (12) or the lower shaft (11), and the other end touches the steel wire rope (2), wherein the micrometer for measuring the lower shaft (11) is inserted into the measuring perforation of the assembly buttress (5);
an oil drum is placed on the foundation, and the heavy hammer (4) is immersed in the oil drum; the steel wire ropes (2) are at least four.
2. An elongated thin walled hollow shaft welding apparatus as claimed in claim 1 wherein there are at least sixteen micrometer shafts, eight upper (12) and eight lower (11) shafts are respectively mounted, at least four upper and lower (12) shafts are respectively mounted, and at least four lower (11) shafts are respectively mounted.
3. An elongated thin walled hollow shaft welding device according to claim 1 or 2, wherein said height adjustment means (6) comprises:
the adjusting frame is fixed on the assembling buttress (5), the adjusting frame is provided with an inclined plane (61) and a vertical plane (62) perpendicular to the inclined plane (61), the inclined plane (61) is provided with a sliding groove, and the vertical plane (62) is provided with a threaded hole;
the wedge-shaped block (64) is placed on the inclined surface 61, a sliding block matched with the sliding groove is arranged on the bottom surface of the wedge-shaped block (64), and the wedge-shaped block (64) can only move along the sliding groove;
the adjusting screw (63) is screwed into the threaded hole of the vertical surface (62), the head of the adjusting screw (63) is rotatably connected with the wedge block (64), and the position of the wedge block (64) can be adjusted by rotating the adjusting screw (63), so that the height of the positioning sleeve (7) can be adjusted.
4. A method of welding an elongated thin walled hollow shaft comprising an elongated thin walled hollow shaft welding device as claimed in claim 3 and upper (12) and lower (11) shafts to be welded, characterized by the steps of:
step A, inserting a lower shaft (11) into a positioning sleeve (7), wherein a space is reserved at the bottom of the lower shaft (11);
step B, respectively rotating a plurality of adjusting screws (63) according to the measured size of the micrometer, so that the lower shaft (11) is vertically installed and fixed through a plurality of lower shaft adjusting screws (8), and the plurality of adjusting screws (63) and the plurality of lower shaft adjusting screws (8) are required to be rotated for a plurality of times;
step C, uniformly spot-welding a plurality of welding spots through the welding gaps (10), and preliminarily positioning an upper shaft (12) and a lower shaft (11);
step D, finding out the maximum offset position E of the upper shaft (12) relative to the lower shaft (11) when the upper shaft (12) and the lower shaft (11) are cooled according to the measured size of the micrometer, extending and welding towards two ends by taking the maximum offset position E as the center to form a welding section H, and continuously finding out the maximum offset position E, continuously welding to form the welding section H, wherein the filling quantity of the welding flux of the welding section H in the welding gap (10) is not more than two thirds of the maximum weldable space in the welding section H;
and E, filling all the welding gap (10) space which is not filled with welding material in one time.
5. A method of welding an elongated thin walled hollow shaft as claimed in claim 4 wherein the greater the offset of said maximum offset location E, the more solder fill in the weld segment H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820195.8A CN107838571B (en) | 2017-09-13 | 2017-09-13 | Welding device and welding method for slender thin-wall hollow shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710820195.8A CN107838571B (en) | 2017-09-13 | 2017-09-13 | Welding device and welding method for slender thin-wall hollow shaft |
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| Publication Number | Publication Date |
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| CN107838571A CN107838571A (en) | 2018-03-27 |
| CN107838571B true CN107838571B (en) | 2023-06-13 |
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| CN201710820195.8A Active CN107838571B (en) | 2017-09-13 | 2017-09-13 | Welding device and welding method for slender thin-wall hollow shaft |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111250932B (en) * | 2020-02-26 | 2023-12-12 | 中国原子能科学研究院 | Manufacturing method of thin-wall slender main shaft for high-temperature high-speed working condition |
| CN111250733B (en) * | 2020-02-26 | 2021-01-19 | 中国原子能科学研究院 | Processing method of overweight long shaft |
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| US6616030B2 (en) * | 2001-05-07 | 2003-09-09 | West Bond, Inc. | Gantry mounted ultrasonic wire bonder with orbital bonding tool head |
| CN102995560B (en) * | 2011-09-09 | 2015-06-24 | 五冶集团上海有限公司 | Thin-wall hollow pier lifting frame and use method thereof |
| CN102828469B (en) * | 2012-08-31 | 2014-12-10 | 中铁三局集团有限公司 | Positioning mounting construction method for triangular steel constructed pillar of inclined-leg steel box |
| CN204381764U (en) * | 2014-12-30 | 2015-06-10 | 南车长江车辆有限公司 | Railway freight-car bottom door axle coaxial welding assembling clamp |
| CN106392414B (en) * | 2016-09-28 | 2018-02-13 | 哈尔滨建成集团有限公司 | A kind of band blade hollow round table welding tool setup |
| CN107052603A (en) * | 2017-06-09 | 2017-08-18 | 中航鼎衡造船有限公司 | A kind of utilization jack adjusts the device of stainless steel welded deformation |
| CN207494882U (en) * | 2017-09-13 | 2018-06-15 | 浙富控股集团股份有限公司 | Elongated thin-walled hollow axis welder |
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Effective date of registration: 20180507 Address after: 311500 25F, zhe Fu Building, 177 Ying Chun Nan Road, Tonglu County, Zhejiang. Applicant after: ZHEFU HOLDING GROUP CO.,LTD. Address before: 311504 Hongqi South Road, the Fuchun River Town, Tonglu, Hangzhou, Zhejiang 99 Applicant before: ZHEJIANG FUCHUNJIANG HYDROPOWER EQUIPMENT Co.,Ltd. |
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Inventor after: Gu Jipin Inventor after: Yang Kongli Inventor after: Tian Huajun Inventor after: Sun Fan Inventor after: Ren Zhihua Inventor after: Yu Zengqiang Inventor after: Chen Rui Inventor after: Liu Xiaoxi Inventor after: Song Lei Inventor after: Zhang Linhai Inventor after: Zhai Xiao Inventor after: Zhang Jianxin Inventor after: Liu Xiuting Inventor after: Guo Xiaoxian Inventor after: Pu Enshan Inventor after: Xiao Lili Inventor after: Wang Mingzheng Inventor after: Chen Shuming Inventor before: Sun Fan Inventor before: Ren Zhihua Inventor before: Yu Zengqiang Inventor before: Chen Rui Inventor before: Liu Xiaoxi Inventor before: Song Lei Inventor before: Zhang Linhai |
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Effective date of registration: 20210114 Address after: 102400 Beifang, Xinzhen, Fangshan District, Beijing Applicant after: CHINA INSTITUTE OF ATOMIC ENERGY Address before: 311500 25F, zhe Fu Building, 177 Ying Chun Nan Road, Tonglu County, Zhejiang. Applicant before: ZHEFU HOLDING GROUP Co.,Ltd. |
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