CN110303290B - Be used for BOSS head welded special fixture - Google Patents

Be used for BOSS head welded special fixture Download PDF

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Publication number
CN110303290B
CN110303290B CN201910561531.0A CN201910561531A CN110303290B CN 110303290 B CN110303290 B CN 110303290B CN 201910561531 A CN201910561531 A CN 201910561531A CN 110303290 B CN110303290 B CN 110303290B
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China
Prior art keywords
fixed ring
welding
boss
jaw chuck
rod
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CN201910561531.0A
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Chinese (zh)
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CN110303290A (en
Inventor
郑文健
周州
冯道臣
刘国豪
余洋
杨建国
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Priority to CN201910561531.0A priority Critical patent/CN110303290B/en
Publication of CN110303290A publication Critical patent/CN110303290A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053Auxiliary 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
    • B23K37/0533Auxiliary 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The invention belongs to the technical field of pipe fitting processing equipment, and particularly relates to a special fixture for welding a BOSS head. Be used for welding between the main pipe of BOSS head and the sub-pipe of BOSS head special fixture, anchor clamps are including locating the solid fixed ring on the main pipe and locating the four-jaw chuck on the sub-pipe, gu fixed ring is equipped with two and locates the both sides of main pipe and sub-pipe welding point respectively, anchor clamps still include the telescopic link, and the upper end and the four-jaw chuck of this telescopic link are connected, and the lower extreme is connected with gu fixed ring, be equipped with the hexagonal arch on the telescopic link, through rotating the size that the telescopic link was drawn force/pressure can be changed to the hexagonal arch. The invention provides a special fixture for welding the BOSS head, which can improve the structural deformation of the welding area of the BOSS head, improve the stress concentration of the welding area of the BOSS head and improve the quality of the welding area of the BOSS head.

Description

Be used for BOSS head welded special fixture
Technical Field
The invention belongs to the technical field of pipe fitting processing equipment, and particularly relates to a special fixture for welding a BOSS head.
Background
Welding is a basic process of engineering construction and is an engineering technology which is widely applied, but the welding area is often accompanied by defects, and the tissue structure of the welding area is not satisfactory.
The BOSS head is a small-size branch pipe joint, and the welding seam of the BOSS head is a laying branch pipe welding seam structure, and the structure and the manufacturing process of the BOSS head are mature, so that the BOSS head is widely applied to the fields of nuclear power plants, chemical industry and the like. In general, the sub-pipe welded by the BOSS head is longer, the bevel angle of the welding line of the BOSS head is smaller, the welding area is easy to deform, the sub-pipe is inclined, and the follow-up welding work is difficult to carry out. Even the defects of unfused welding lines and the like easily occur, thereby influencing the quality of the welding lines.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the special fixture for welding the BOSS head, which can improve the structural deformation of the welding area of the BOSS head, improve the stress concentration of the welding area of the BOSS head and improve the quality of the welding area of the BOSS head. For this purpose, the invention adopts the following technical scheme:
be used for welding between the main pipe of BOSS head and the sub-pipe of BOSS head special fixture, anchor clamps are including locating the solid fixed ring on the main pipe and locating the four-jaw chuck on the sub-pipe, gu fixed ring is equipped with two and locates the both sides of main pipe and sub-pipe welding point respectively, anchor clamps still include the telescopic link, and the upper end and the four-jaw chuck of this telescopic link are connected, and the lower extreme is connected with gu fixed ring, be equipped with the hexagonal arch on the telescopic link, through rotating the size that the telescopic link was drawn force/pressure can be changed to the hexagonal arch.
On the basis of adopting the technical scheme, the invention can also adopt the following further technical scheme:
the four-jaw chuck is characterized in that at least two first connecting rings are arranged on the side wall of the four-jaw chuck, at least one second connecting ring is arranged on the side wall of the fixed ring, an upper connecting piece and a lower connecting piece are respectively arranged at two ends of the telescopic rod, the upper connecting piece is connected with the first connecting rings, and the lower connecting piece is connected with the second connecting rings.
The telescopic rod further comprises an upper rod, a through hole sleeve and a lower rod, the upper rod and the through hole sleeve and the lower rod and the through hole sleeve are connected through threads, and the length of the telescopic rod can be adjusted by rotating the upper rod or/and the lower rod; the upper connecting piece is arranged at the upper end part of the upper rod, and the lower connecting piece is arranged at the lower end part of the lower rod.
The upper rod is also sleeved with a load sensor to detect the tension/compression force of the telescopic rod.
The four-jaw chuck is of a circular structure sleeved on the sub-pipe, at least two sliding grooves are formed in the four-jaw chuck, raised strips with the same length as the sliding grooves are arranged on two sides of the sliding grooves, and clamping teeth inserted into the raised strips are arranged in the sliding grooves and can move in the sliding grooves.
The sliding chute is internally provided with a bolt, the bottom of the latch is provided with a tooth structure, the latch is meshed with the bolt through the tooth structure, and the latch can be jacked to move towards the center of the four-jaw chuck through rotating the bolt; the end of the latch close to the center of the four-jaw chuck is of a sharp angle structure with a narrow plane at the top angle, and the end of the latch far away from the center of the four-jaw chuck is of a plane structure.
And at least four arc grooves are formed in the four-jaw chuck and are uniformly distributed on the upper surface of the four-jaw chuck.
The contact surface of the four-jaw chuck and the sub-pipe is a rough surface, and the contact surface between the clamping teeth and the bolt is a rough surface.
The fixed ring comprises a first fixed ring piece and a second fixed ring piece which are connected through an inner hexagon bolt, wherein the first fixed ring piece is of a semicircular structure, the second fixed ring piece is of an omega-shaped structure, and the inner hexagon bolt penetrates through the bent part of the second fixed ring piece and then is inserted into the end part of the first fixed ring piece to be fixed.
The contact surface of the fixed ring and the main pipe is a rough surface, and the outer surface of the hexagonal boss on the telescopic rod is subjected to wear-resistant treatment.
The invention has the advantages that: the device can fix the BOSS head, and workers do not need to be distracted to right the BOSS head sub-pipe when welding the BOSS head. Meanwhile, the structure deformation of the welding area of the BOSS head can be improved, the stress concentration of the welding area of the BOSS head is improved, the quality of the welding area of the BOSS head is improved, the weld defect caused by the inclination of the factor tube is avoided, and the service life of the BOSS head is prolonged to a certain extent. The device is easy to operate, simple in structure and labor-saving. The device is small in size, convenient to clamp, fix and detach, and applicable to large-scale undetachable pipeline welding.
Description of the drawings:
fig. 1 is a schematic structural view of a special fixture for welding a BOSS head according to the present invention.
Fig. 2 is a schematic view of a telescopic rod structure of a special fixture for welding a BOSS head according to the present invention.
Fig. 3 is a schematic diagram of a four-jaw chuck of a special fixture for welding a BOSS head according to the present invention.
Fig. 4 is a schematic view of a fixing ring structure of a special fixture for welding a BOSS head according to the present invention.
Fig. 5 is a schematic diagram of a latch and bolt engagement structure of a special fixture for welding a BOSS head according to the present invention.
The pipe comprises a main pipe 1, a sub pipe 2, a fixed ring 3, a first fixed ring piece 31, a second fixed ring piece 32, a bending part 321, an inner hexagon bolt 33, a second connecting ring 34, a four-jaw chuck 4, a sliding chute 41, a bolt 411, a convex strip 42, a clamping tooth 43, a narrow plane 44, an arc groove 45, a first connecting ring 46, a telescopic rod 5, an upper rod 51, a through hole sleeve 52, a lower rod 53, a hexagon boss 54, an upper connecting piece 55, a lower connecting piece 56 and a load sensor 57.
Detailed Description
The invention provides a special fixture for welding a BOSS head, which is further described with reference to the accompanying drawings.
In a first embodiment, as shown in fig. 1-4, a special fixture for welding a BOSS head is suitable for welding a BOSS head main pipe 1 and a BOSS head sub pipe 2.
The clamp comprises a fixed ring 3 arranged on a main pipe 1, a four-jaw chuck 4 arranged on a sub pipe 2 and four telescopic rods 5, wherein the fixed ring 3 is provided with two telescopic rods which are respectively arranged on two sides of a welding point of the main pipe 1 and the sub pipe 2, the upper ends of the telescopic rods 5 are connected with the four-jaw chucks 4, and the lower ends of the telescopic rods 5 are connected with the fixed ring 3.
The fixed ring 3 comprises a first fixed ring piece 31 and a second fixed ring piece 32 which are connected through an inner hexagon bolt 33, wherein the first fixed ring piece 31 is of a semicircular ring structure, the second fixed ring piece 32 is of an omega-shaped structure, and the inner hexagon bolt 33 penetrates through a bending part 321 of the second fixed ring piece 32 and then is inserted into the end part of the first fixed ring piece 31 to be fixed.
Further, the contact surface of the fixing ring 3 and the main pipe 1 is a rough surface.
The four-jaw chuck 4 is of a circular ring structure sleeved on the sub-pipe 2, four sliding grooves 41 are formed in the four-jaw chuck 4, raised strips 42 with the same length as the sliding grooves 41 are arranged on two sides of the sliding grooves 41, clamping teeth 43 which are inserted into the raised strips 42 are arranged in the sliding grooves 41, and the clamping teeth 43 can move in the sliding grooves 41.
Further, a bolt 411 is further arranged in the chute 41, a tooth structure is arranged at the bottom of the latch 43, the latch 43 is meshed with the bolt 411 through the tooth structure, and the latch 43 can be pressed against the center of the four-jaw chuck 4 to move through rotating the bolt 411. Wherein the bolt 411 is a hexagon socket head screw modified bolt.
Further, the end of the latch 43 near the center of the four-jaw chuck 4 has a sharp angle structure with a narrow plane 44 at the top angle, and the end of the latch 43 far from the center of the four-jaw chuck 4 has a plane structure.
Further, twelve arc-shaped grooves 45 are further formed in the four-jaw chuck 4, and the arc-shaped grooves 45 are uniformly distributed on the upper surface of the four-jaw chuck 4.
Further, the contact surface between the four-jaw chuck 4 and the sub-pipe 2 is a rough surface, and the contact surface between the latch 43 and the bolt is a rough surface.
The telescopic rod 5 comprises an upper rod 51, a through hole sleeve 52 and a lower rod 53, wherein a hexagonal protrusion 54 is arranged on the through hole sleeve 52, and the size of the tensile force/pressure applied to the telescopic rod 5 can be changed by rotating the hexagonal protrusion 54. Wherein the outer surface of the hexagonal boss 54 on the telescopic rod 5 is subjected to wear-resistant treatment.
Further, the upper rod 51 and the through hole sleeve 52 and the lower rod 53 and the through hole sleeve 52 are connected through threads, and the length of the telescopic rod 5 can be adjusted by rotating the upper rod 51 or/and the lower rod 53.
Further, the upper rod 51 is further sleeved with a load sensor 57 to detect the tension/compression force applied to the telescopic rod 5.
The four first connection rings 46 are arranged on the side wall of the four-jaw chuck 4, and the four first connection rings 46 are arranged on the side wall of the four-jaw chuck 4 at equal intervals. The side wall of the fixed ring 3 is provided with two second connecting rings 34, and the two second connecting rings 34 are respectively arranged at the central positions of the first fixed ring piece 31 and the second fixed ring piece 32. The two ends of the telescopic rod 5 are respectively provided with an upper connecting piece 55 and a lower connecting piece 56, the upper connecting piece 55 is connected with the first connecting ring 46, and the lower connecting piece 56 is connected with the second connecting ring 34.
The upper connector 55 is provided at the upper end of the upper rod 51, and the lower connector 56 is provided at the lower end of the lower rod 53.
In the second embodiment, a special fixture for welding a BOSS head is suitable for welding a main pipe 1 of the BOSS head and a sub pipe 2 of the BOSS head.
The clamp comprises a fixed ring 3 arranged on a main pipe 1, a four-jaw chuck 4 arranged on a sub pipe 2 and two telescopic rods 5, wherein the fixed ring 3 is provided with two telescopic rods which are respectively arranged on two sides of a welding point of the main pipe 1 and the sub pipe 2, the upper ends of the telescopic rods 5 are connected with the four-jaw chuck 4, and the lower ends of the telescopic rods 5 are connected with the fixed ring 3.
The fixed ring 3 comprises a first fixed ring piece 31 and a second fixed ring piece 32 which are connected through an inner hexagon bolt 33, wherein the first fixed ring piece 31 is of a semicircular ring structure, the second fixed ring piece 32 is of an omega-shaped structure, and the inner hexagon bolt 33 penetrates through a bending part 321 of the second fixed ring piece 32 and then is inserted into the end part of the first fixed ring piece 31 to be fixed.
Further, the contact surface of the fixing ring 3 and the main pipe 1 is a rough surface.
The four-jaw chuck 4 is of a circular ring structure sleeved on the sub-pipe 2, two sliding grooves 41 are formed in the four-jaw chuck 4, raised strips 42 with the same length as the sliding grooves 41 are arranged on two sides of the sliding grooves 41, clamping teeth 43 which are inserted into the raised strips 42 are arranged in the sliding grooves 41, and the clamping teeth 43 can move in the sliding grooves 41.
Further, a bolt 411 is further arranged in the chute 41, a tooth structure is arranged at the bottom of the latch 43, the latch 43 is meshed with the bolt 411 through the tooth structure, and the latch 43 can be pressed against the center of the four-jaw chuck 4 to move through rotating the bolt 411. Wherein the bolt 411 is a hexagon socket head screw modified bolt.
Further, the end of the latch 43 near the center of the four-jaw chuck 4 has a sharp angle structure with a narrow plane 44 at the top angle, and the end of the latch 43 far from the center of the four-jaw chuck 4 has a plane structure.
Further, four arc grooves 45 are further formed in the four-jaw chuck 4, and the arc grooves 45 are uniformly distributed on the upper surface of the four-jaw chuck 4.
Further, the contact surface between the four-jaw chuck 4 and the sub-pipe 2 is a rough surface, and the contact surface between the latch 43 and the bolt is a rough surface.
The telescopic rod 5 comprises an upper rod 51, a through hole sleeve 52 and a lower rod 53, wherein a hexagonal protrusion 54 is arranged on the through hole sleeve 52, and the size of the tensile force/pressure applied to the telescopic rod 5 can be changed by rotating the hexagonal protrusion 54. Wherein the outer surface of the hexagonal boss 54 on the telescopic rod 5 is subjected to wear-resistant treatment.
Further, the upper rod 51 and the through hole sleeve 52 and the lower rod 53 and the through hole sleeve 52 are connected through threads, and the length of the telescopic rod 5 can be adjusted by rotating the upper rod 51 or/and the lower rod 53.
Further, the upper rod 51 is further sleeved with a load sensor 57 to detect the tension/compression force applied to the telescopic rod 5.
Wherein, the side wall of the four-jaw chuck 4 is provided with two first connecting rings 46, and the two first connecting rings 46 are arranged at the same interval; the side wall of the fixed ring 3 is provided with a second connecting ring 34, two ends of the telescopic rod 5 are respectively provided with an upper connecting piece 55 and a lower connecting piece 56, the upper connecting piece 55 is connected with the first connecting ring 46, and the lower connecting piece 56 is connected with the second connecting ring 34.
The upper connector 55 is provided at the upper end of the upper rod 51, and the lower connector 56 is provided at the lower end of the lower rod 53.
The working principle of the specific embodiment of the invention is as follows: the BOSS head is fixed by using a special fixture, and the sleeve with the hexagonal protrusion in the middle can be screwed by using a spanner to control the tension or pressure of the telescopic rod, so that the tension or pressure of the four load sensors is kept equal. When the BOSS head is welded, the sub-pipe is subjected to the tensile force of the special fixture, the inclination of the sub-pipe caused by the deformation of the welding area can be weakened, the structural deformation of the welding area of the BOSS head can be improved, the stress concentration of the welding area of the BOSS head can be improved, the quality of the welding area of the BOSS head can be improved, and therefore the service life of the BOSS head can be greatly prolonged.
While the invention has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the invention.

Claims (6)

1. Be used for welding special fixture of BOSS head, be applicable to the welding between BOSS head parent tube and the BOSS head sub-tube, its characterized in that: the clamp comprises a fixed ring arranged on a main pipe and four-jaw chucks arranged on a sub pipe, wherein the fixed ring is provided with two fixing rings which are respectively arranged on two sides of a welding point of the main pipe and the sub pipe, the clamp also comprises a telescopic rod, the upper end of the telescopic rod is connected with the four-jaw chucks, the lower end of the telescopic rod is connected with the fixing ring, a hexagonal bulge is arranged on the telescopic rod, and the tension/pressure of the telescopic rod can be changed by rotating the hexagonal bulge;
the side wall of the four-jaw chuck is provided with at least two first connecting rings, the side wall of the fixed ring is provided with at least one second connecting ring, two ends of the telescopic rod are respectively provided with an upper connecting piece and a lower connecting piece, the upper connecting piece is connected with the first connecting rings, and the lower connecting piece is connected with the second connecting rings;
the telescopic rod further comprises an upper rod, a through hole sleeve and a lower rod, the upper rod and the through hole sleeve and the lower rod and the through hole sleeve are connected through threads, and the length of the telescopic rod can be adjusted by rotating the upper rod or/and the lower rod; the upper connecting piece is arranged at the upper end part of the upper rod, and the lower connecting piece is arranged at the lower end part of the lower rod;
the four-jaw chuck is of a circular structure sleeved on the sub-pipe, at least two sliding grooves are formed in the four-jaw chuck, raised strips with the same length as the sliding grooves are arranged on two sides of the sliding grooves, clamping teeth which are inserted into the raised strips are arranged in the sliding grooves, and the clamping teeth can move in the sliding grooves;
the sliding chute is internally provided with a bolt, the bottom of the latch is provided with a tooth structure, the latch is meshed with the bolt through the tooth structure, and the latch can be jacked to move towards the center of the four-jaw chuck through rotating the bolt; the end of the latch close to the center of the four-jaw chuck is of a sharp angle structure with a narrow plane at the top angle, and the end of the latch far away from the center of the four-jaw chuck is of a plane structure.
2. A special fixture for welding a BOSS as recited in claim 1, wherein: the upper rod is also sleeved with a load sensor to detect the tension/compression force of the telescopic rod.
3. A special fixture for welding a BOSS as recited in claim 1, wherein: and at least four arc grooves are formed in the four-jaw chuck and are uniformly distributed on the upper surface of the four-jaw chuck.
4. A special fixture for welding a BOSS as recited in claim 1, wherein: the contact surface of the four-jaw chuck and the sub-pipe is a rough surface, and the contact surface between the clamping teeth and the bolt is a rough surface.
5. A special fixture for welding a BOSS as recited in claim 1, wherein: the fixed ring comprises a first fixed ring piece and a second fixed ring piece which are connected through an inner hexagon bolt, wherein the first fixed ring piece is of a semicircular structure, the second fixed ring piece is of an omega-shaped structure, and the inner hexagon bolt penetrates through the bent part of the second fixed ring piece and then is inserted into the end part of the first fixed ring piece to be fixed.
6. A special fixture for welding a BOSS as recited in claim 5, wherein: the contact surface of the fixed ring and the main pipe is a rough surface, and the outer surface of the hexagonal boss on the telescopic rod is subjected to wear-resistant treatment.
CN201910561531.0A 2019-06-26 2019-06-26 Be used for BOSS head welded special fixture Active CN110303290B (en)

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CN201910561531.0A CN110303290B (en) 2019-06-26 2019-06-26 Be used for BOSS head welded special fixture

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CN110303290B true CN110303290B (en) 2024-03-15

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110802364B (en) * 2019-11-29 2024-06-07 浙江工业大学 Device for generating residual compressive stress of welded joint of intersecting pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127579A (en) * 1981-02-02 1982-08-07 Nippon Kokan Kk <Nkk> Welding device for main pipe body and branch pipe body
JP2017030004A (en) * 2015-07-30 2017-02-09 株式会社東芝 Pipe welding method and welding assembly structure
CN208147277U (en) * 2018-04-18 2018-11-27 雅安市智力机械设备有限责任公司 A kind of three-way pipeline welding platform with automatic positioning function
CN109290708A (en) * 2018-11-20 2019-02-01 哈尔滨阿尔特机器人技术有限公司 The automatic welding machine people system and control method of BOSS reparations
CN109570892A (en) * 2018-12-08 2019-04-05 黄力华 It is a kind of for manufacturing the semi-automatic docking machine of three-way pipeline
CN210306521U (en) * 2019-06-26 2020-04-14 浙江工业大学 Be used for first welded special fixture of BOSS

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57127579A (en) * 1981-02-02 1982-08-07 Nippon Kokan Kk <Nkk> Welding device for main pipe body and branch pipe body
JP2017030004A (en) * 2015-07-30 2017-02-09 株式会社東芝 Pipe welding method and welding assembly structure
CN208147277U (en) * 2018-04-18 2018-11-27 雅安市智力机械设备有限责任公司 A kind of three-way pipeline welding platform with automatic positioning function
CN109290708A (en) * 2018-11-20 2019-02-01 哈尔滨阿尔特机器人技术有限公司 The automatic welding machine people system and control method of BOSS reparations
CN109570892A (en) * 2018-12-08 2019-04-05 黄力华 It is a kind of for manufacturing the semi-automatic docking machine of three-way pipeline
CN210306521U (en) * 2019-06-26 2020-04-14 浙江工业大学 Be used for first welded special fixture of BOSS

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