CN113385872B - Shell combination positioning welding device and method - Google Patents
Shell combination positioning welding device and method Download PDFInfo
- Publication number
- CN113385872B CN113385872B CN202110559589.9A CN202110559589A CN113385872B CN 113385872 B CN113385872 B CN 113385872B CN 202110559589 A CN202110559589 A CN 202110559589A CN 113385872 B CN113385872 B CN 113385872B
- Authority
- CN
- China
- Prior art keywords
- tightening
- piece
- chuck
- connecting shaft
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- 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
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- 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)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a shell combined positioning welding device and a method, wherein the device comprises a first positioning fixed disc; the first tightening mechanism comprises a first tightening piece, the first tightening piece is cylindrical, the outer diameter of the first tightening piece can be changed, and a first gas protection device is arranged on the first tightening mechanism; the second tightening mechanism has the same structure as the first tightening mechanism; a second positioning fixing plate; a first connecting cylinder; and the second connecting cylinder and the connecting shaft. The device can ensure that the coaxiality of the machined end ring and the sheet metal part cylinder is within 0.1mm, and has the advantages of being accurate and reliable in positioning, capable of providing effective argon back protection, capable of avoiding joint dislocation, and capable of avoiding the precision requirement of the roundness of the cylinder body.
Description
Technical Field
The invention relates to the technical field of fixed-position welding, in particular to a shell combined fixed-position welding device and method.
Background
The missile cabin assembly of a certain model is formed by welding an end ring of an machined part and a metal plate cylinder. The machined end ring is a regular circumferential part, the thickness is large, and the machining of the dimensional tolerance and the form and position tolerance of the machined end ring can be ensured, so that the machined end ring is not easy to deform. The sheet metal part cylinder is formed by rolling titanium alloy TC4-1.8 plates, has a small thickness and is easy to deform, the production mode at the present stage is rolling bending of the plates and thermal expansion after welding, and the problems of low dimensional and shape and position precision, ellipse in a natural state and the like exist.
The welding method of the machined end ring and the sheet metal part cylinder at the present stage comprises the following steps: and (3) taking the position to be welded of the end ring as a positioning reference, and repairing the welding seam size of the sheet metal part cylinder by a fitter according to the positioning reference. This method has the following disadvantages: (1) Because the thickness phase difference of the machined end ring and the sheet metal part cylinder is larger, and meanwhile, because the thickness of the sheet metal part cylinder is thinner and is easy to deform, the butt welding difficulty of the machined end ring and the sheet metal part cylinder is larger, the welding seam size needs to be repaired by a fitter, and the technical requirements on the fitter are higher and the efficiency is low. (2) The dimensional accuracy of the welding seam repaired by the fitter is poor, the difference between welded products is large, and the accuracy and stability are low. (3) During tack welding, the diameter of the shell assembly is smaller, gas protection is difficult to perform, and the quality of the tack welding cannot be guaranteed to be qualified.
In order to improve the production efficiency, ensure the welding quality and realize batch welding, the invention improves the original welding device.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent. The invention aims to provide a shell combination positioning welding device and a method. The invention can ensure that the coaxiality of the machined end ring and the sheet metal part cylinder is within 0.1mm, and has the advantages of accurate and reliable positioning, effective argon back protection, capability of avoiding joint dislocation, precision requirement of cylinder roundness and the like.
In one aspect of the invention, a housing combination tack welding apparatus is provided. According to an embodiment of the present invention, the housing combination tack welding apparatus includes:
the first tightening mechanism comprises a first tightening piece, the first tightening piece is cylindrical, the outer diameter of the first tightening piece is changeable, a first gas protection device is arranged on the first tightening mechanism and is of a hollow structure, a through hole is formed in the outer wall of the first gas protection device, and the first gas protection device is connected with the argon storage device through a hose;
the second tightening mechanism comprises a second tightening piece, the second tightening piece is cylindrical, the outer diameter of the second tightening piece is changeable, a second gas protection device is arranged on the second tightening mechanism, the second gas protection device is of a hollow structure, a through hole is formed in the outer wall of the second gas protection device, and the second gas protection device is connected with the argon storage device through a hose;
a first positioning fixing plate;
a second positioning fixing plate;
a connecting shaft;
the first connecting cylinder is connected with one end of the connecting shaft, one end of the first connecting cylinder is connected with the first positioning fixing disc through a connecting piece, and the first tightening mechanism is arranged between the first positioning fixing disc and the first connecting cylinder;
the second connecting cylinder, the one end of second connecting cylinder with the other end of connecting axle links to each other, just the other end of second connecting cylinder pass through the connecting piece with the second location fixed disk links to each other, second tight mechanism setting of propping is in the second location fixed disk with between the second connecting cylinder.
According to the shell combination positioning welding device disclosed by the embodiment of the invention, the two ends of the shell combination positioning welding device are respectively provided with the tightening mechanisms, the outer diameters of the tightening members of the tightening mechanisms can be changed, and the joint of the inner tightening member end ring and the sheet metal part cylinder is used for tightening the outer diameter of the tightening member to be equal to the theoretical inner diameter of the sheet metal part cylinder, so that the easily-deformed sheet metal part cylinder and the inner diameter of the machine tightening member end ring are both braced to the theoretical circle. Meanwhile, the consistency of the weld joint sizes of products in different batches can be ensured, and the influence of human factors on the welding quality due to the weld joint sizes and the butt joint gaps is eliminated; the invention is provided with the gas protection device, so that the welding seam can be protected by argon gas during positioning welding, the welding seam is prevented from being oxidized in the welding process, and the quality of the welding seam is ensured. Therefore, the device can ensure that the coaxiality of the machined end ring and the sheet metal part cylinder is within 0.1mm, and has the advantages of being accurate and reliable in positioning, capable of providing effective argon back protection, capable of avoiding joint dislocation, required precision of cylinder roundness and the like.
In addition, the case combination tack welding device according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the first tightening mechanism further includes a first rotating shaft, a first chuck connecting shaft, a first centering chuck, and a first tightening member connecting piece, where the first rotating shaft is connected to the first chuck connecting shaft, the first rotating shaft drives the first chuck connecting shaft to rotate, the first chuck connecting shaft is connected to the first centering chuck, the first chuck connecting shaft drives the first centering chuck to rotate, a planar thread is provided on the first centering chuck, a gear is provided on the first tightening member connecting piece, the planar thread on the first centering chuck is meshed with the gear on the first tightening member connecting piece, and the first tightening member connecting piece is connected to the first tightening member, and drives the first tightening member to move toward the center or outwards through the gear.
In some embodiments of the present invention, the first tightening mechanism further includes a first rocker wheel, the first rocker wheel being connected to the first shaft, the first rocker wheel driving the first shaft to rotate.
In some embodiments of the present invention, the first tightening member is composed of a plurality of mutually independent soft claws that simultaneously move toward the center or outward, thereby achieving the effect of changing the outer diameter of the first tightening member.
In some embodiments of the present invention, the second tightening mechanism further includes a second rotating shaft, a second chuck connecting shaft, a second centering chuck, and a second tightening member connecting piece, where the second rotating shaft is connected to the second chuck connecting shaft, the second rotating shaft drives the second chuck connecting shaft to rotate, the second chuck connecting shaft is connected to the second centering chuck, the second chuck connecting shaft drives the second centering chuck to rotate, a planar thread is provided on the second centering chuck, a gear is provided on the second tightening member connecting piece, the planar thread on the second centering chuck is engaged with the gear on the second tightening member connecting piece, and the second tightening member connecting piece is connected to the second tightening member, and the second tightening member connecting piece drives the second tightening member to move toward the center or outwards through the gear.
In some embodiments of the present invention, the second tightening mechanism further includes a second rocking wheel, where the second rocking wheel is connected to the second rotating shaft, and the second rocking wheel drives the second rotating shaft to rotate.
In some embodiments of the present invention, the second tightening member is composed of a plurality of mutually independent soft claws that simultaneously move toward the center or outward, thereby achieving the effect of changing the outer diameter of the second tightening member.
In some embodiments of the invention, the connecting shaft is cylindrical.
In some embodiments of the invention, the outer diameter of the connecting shaft is 1/2-2/3 of the inner diameter of the machined end ring.
In some embodiments of the invention, the connecting shaft is provided with a plurality of lightening holes.
In some embodiments of the invention, the spacing between adjacent lightening holes in the circumferential direction of the connecting shaft is 80-90mm and the spacing between adjacent lightening holes in the axial direction of the connecting shaft is 35-45mm.
In some embodiments of the invention, the surface area of the individual lightening holes is 2000-3000mm 2 。
In some embodiments of the invention, the first positioning fixture is cylindrical.
In some embodiments of the invention, the outer diameter of the first positioning fixture is 0.02-0.03mm less than the inner diameter of the end ring in the housing assembly.
In some embodiments of the invention, the second positioning fixture is cylindrical.
In some embodiments of the invention, the outer diameter of the second positioning fixture is 0.02-0.03mm less than the inner diameter of the end ring in the housing assembly.
In some embodiments of the invention, the through hole on the outer wall of the first gas protection device is circular, oval or polygonal.
In some embodiments of the present invention, two rows of through holes are arranged on the outer wall of the first gas protection device along the circumferential direction, the two rows of through holes are arranged at intervals, the distance between adjacent through holes in the same row is 8-12mm, and the distance between adjacent through holes in different rows is 4-6mm.
In some embodiments of the present invention, the through hole on the outer wall of the first gas protection device is circular, and the aperture of the circular through hole is 0.8-1.2mm.
In some embodiments of the invention, the through hole on the outer wall of the second gas protection device is circular, elliptical or polygonal.
In some embodiments of the present invention, two rows of through holes are arranged on the outer wall of the second gas protection device along the circumferential direction, the two rows of through holes are arranged at intervals, the distance between the adjacent same rows of through holes is 8-12mm, and the distance between the adjacent different rows of through holes is 4-6mm.
In some embodiments of the present invention, the through hole on the outer wall of the second gas protection device is circular, and the diameter of the circular through hole is 0.8-1.2mm.
In some embodiments of the invention, the housing combination tack welding device further comprises a bracket for supporting the housing combination tack welding device.
In another aspect of the present invention, the present invention provides a method for performing a welding operation by using the device for welding and positioning a housing assembly according to the above embodiment, including:
(1) Sleeving an machined end ring to be welded and a sheet metal part cylinder outside a shell combined positioning welding device, and arranging the machined end ring at two ends of the sheet metal part cylinder;
(2) The butt joint positions of the machine-added part end ring and the sheet metal part cylinder are respectively opposite to a first tightening part and a second tightening part, and the first tightening mechanism and the second tightening mechanism are rotated to enable the outer diameters of the first tightening part and the second tightening part to be increased until the outer diameters of the first tightening part and the second tightening part are equal to the theoretical inner diameter of the sheet metal part cylinder;
(3) Argon is provided along with the first gas protection device and the second gas protection device, and the butt joint part of the machined end ring and the sheet metal part cylinder is welded.
According to the positioning welding method disclosed by the embodiment of the invention, the outer diameter of the tightening piece is increased by rotating the tightening mechanism, and the joint of the end ring of the inner tightening machine and the sheet metal part cylinder is used until the outer diameter of the tightening piece is equal to the theoretical inner diameter of the sheet metal part cylinder sleeve, so that the joint size and gap of a welding seam are ensured, and the technical requirements of welding personnel are reduced. Meanwhile, the consistency of the weld joint sizes of products in different batches can be ensured, and the influence of human factors on the welding quality due to the weld joint sizes and the butt joint gaps is eliminated; according to the invention, through the gas protection device, the welding seam can be protected by argon during positioning welding, so that the welding seam is prevented from being oxidized in the welding process, and the welding seam quality is ensured. Therefore, the method can ensure that the coaxiality of the machined end ring and the sheet metal part cylinder is within 0.1mm, and has the advantages of being accurate and reliable in positioning, capable of providing effective argon back protection, capable of avoiding joint dislocation, and capable of avoiding the precision requirement of cylinder roundness.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of a housing combination tack welding apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a first tightening mechanism or a second tightening mechanism of a housing combination tack welding device in accordance with an embodiment of the present invention.
Fig. 3 is a schematic partial cross-sectional view of a housing combination tack welding apparatus in accordance with an embodiment of the present invention.
Fig. 4 is a schematic structural view of a first tightening mechanism or a second tightening mechanism of a case assembly welding device according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a connecting shaft of a housing combination tack welding device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, terms such as "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In one aspect of the present invention, a housing combination tack welding apparatus is provided, with reference to fig. 1, the apparatus comprising: the device comprises a first positioning fixing disc 1, a first tightening mechanism 3, a first gas protection device 2, a second tightening mechanism 5, a second gas protection device 6, a second positioning fixing disc 7, a first connecting cylinder 9, a second connecting cylinder 10 and a connecting shaft 4.
According to an embodiment of the present invention, referring to fig. 2, the first tightening mechanism 3 includes a first tightening member 3-3, the first tightening member 3-3 is cylindrical, and an outer diameter of the first tightening member 3-3 may be varied. The first tightening mechanism 3 further comprises a first rotating shaft 3-2, a first chuck connecting shaft 3-6, a first positioning chuck 3-5 and a first tightening piece connecting piece 3-4, the first rotating shaft 3-2 is fixed with the first chuck connecting shaft 3-6, the first rotating shaft 3-2 drives the first chuck connecting shaft 3-6 to rotate, the first chuck connecting shaft 3-6 is fixed with the first positioning chuck 3-5 through a plurality of M4 screws, the first chuck connecting shaft 3-6 drives the first positioning chuck 3-5 to rotate, planar threads are arranged on the first positioning chuck 3-5, gears are arranged on the first tightening piece connecting piece 3-4, the planar threads on the first positioning chuck 3-5 are meshed with the gears on the first tightening piece connecting piece 3-4, the first tightening piece connecting piece 3-4 is connected with the first tightening piece 3-3, and the first tightening piece connecting piece 3-4 drives the first positioning chuck 3-5 to rotate, and the first tightening piece 3-4 to move outwards from the first positioning chuck 3-5 through the gears, or the first tightening piece 3-3 is changed to the outer diameter.
Further, referring to fig. 2, the first tightening mechanism 3 further includes a first rocking wheel 3-1, the first rocking wheel 3-1 is connected to the first rotating shaft 3-2, and the first rocking wheel 3-1 drives the first rotating shaft 3-2 to rotate. Preferably, the first rocker 3-1 is a manual rocker.
Further, the first tightening member 3-3 is composed of a plurality of mutually independent soft claws, preferably 3, and the plurality of mutually independent soft claws simultaneously move towards the center or outwards to achieve the effect of changing the outer diameter of the first tightening member 3-3, so that the function of automatically centering and tightening the sheet metal part cylinder is achieved.
According to an embodiment of the present invention, referring to fig. 2, the second tightening mechanism 5 includes a second tightening member 5-3, the second tightening member 5-3 is cylindrical, and an outer diameter of the second tightening member 5-3 may be varied. The second tightening mechanism 5 further comprises a second rotating shaft 5-2, a second chuck connecting shaft 5-6, a second centering chuck 5-5 and a second tightening piece connecting piece 5-4, the second rotating shaft 5-2 is fixed with the second chuck connecting shaft 5-6, the second rotating shaft 5-2 drives the second chuck connecting shaft 5-6 to rotate, the second chuck connecting shaft 5-6 is fixed with the second centering chuck 5-5 through a plurality of M4 screws, the second chuck connecting shaft 5-6 drives the second centering chuck 5-5 to rotate, planar threads are arranged on the second centering chuck 5-5, gears are arranged on the second tightening piece connecting piece 5-4, the planar threads on the second centering chuck 5-5 are meshed with the gears on the second tightening piece connecting piece 5-4, the second tightening piece connecting piece 5-4 is connected with the second tightening piece 5-3, and the second tightening piece connecting piece 5-4 drives the second centering chuck 5-5 to rotate outwards through the gears.
Further, referring to fig. 2, the second tightening mechanism 5 further includes a second rocking wheel 5-1, the second rocking wheel 5-1 is connected to the second rotating shaft 5-2, and the second rocking wheel 5-1 drives the second rotating shaft 5-2 to rotate. Preferably, the second rocking wheel 5-1 is a manual rocking wheel.
Further, the second tightening member 5-3 is composed of a plurality of mutually independent soft claws, preferably 3, and the plurality of mutually independent soft claws simultaneously move towards the center or outwards to achieve the effect of changing the outer diameter of the second tightening member 5-3, so that the function of automatically centering and tightening the sheet metal part cylinder is achieved.
According to an embodiment of the present invention, referring to fig. 1, the first positioning fixing disk 1 is used for positioning an mechanically-added end ring at one end, ensuring coaxiality of the end ring and a cylinder, ensuring butt welding size of a welding seam of the end ring and the cylinder, and preventing dislocation. The second positioning fixing disc 7 is an mechanically-added end ring for positioning the other end, so that coaxiality of the end ring and the cylinder body is ensured, butt welding size of welding seams of the end ring and the cylinder body is ensured, and dislocation is prevented. The positioning fixing disc is matched with the tightening mechanism, so that the end ring of the machined part is accurately abutted with the sheet metal part cylinder.
Further, the first positioning and fixing disc 1 is cylindrical, and the outer diameter of the first positioning and fixing disc 1 is 0.02-0.03mm smaller than the inner diameter of the end ring in the shell assembly, so that the end ring and the cylinder in the shell assembly can be smoothly sleeved outside the shell assembly positioning and welding device, and the positioning and fixing function of the positioning and fixing disc can be ensured; the inventor finds that if the outer diameter of the first positioning and fixing disc 1 is too large, the end ring and the cylinder in the shell assembly cannot be smoothly sleeved outside the shell assembly positioning and welding device, and if the outer diameter is too small, the positioning and fixing effect cannot be effectively achieved.
Further, the second positioning and fixing disc 7 is cylindrical, and the outer diameter of the second positioning and fixing disc 7 is 0.02-0.03mm smaller than the inner diameter of the end ring in the shell assembly, so that the end ring and the cylinder in the shell assembly can be smoothly sleeved outside the shell assembly positioning and welding device, and the positioning and fixing function of the positioning and fixing disc can be ensured; the inventor finds that if the outer diameter of the second positioning and fixing disc 7 is too large, the end ring and the cylinder in the shell assembly cannot be smoothly sleeved outside the shell assembly positioning and welding device, and if the outer diameter is too small, the positioning and fixing effect cannot be effectively achieved.
According to an embodiment of the present invention, referring to fig. 1 and 3, a first connection cylinder 9, one end of the first connection cylinder 9 is connected to one end of the connection shaft 4, and the other end of the first connection cylinder 9 is connected to the first positioning fixing plate 1 through a connection member (not shown in the drawings) connected to one end of the first connection cylinder 9 through a screw. The first tightening mechanism is arranged between the first positioning fixing plate and the first connecting cylinder 9. The inner diameter of the first connecting tube 9 is larger than the outer diameter of the first chuck connecting shaft 3-6, and the first connecting tube 9 is sleeved outside the first chuck connecting shaft 3-6.
According to an embodiment of the present invention, referring to fig. 1 and 3, a second connection cylinder 10, one end of the second connection cylinder 10 is connected to the other end of the connection shaft 4, and the other end of the second connection cylinder 10 is connected to the second positioning fixing plate 7 through a connection member (not shown in the drawings) connected to one end of the second connection cylinder 10 through a screw. The first tightening mechanism is disposed between the first positioning fixing plate and the second connecting cylinder 10. The inner diameter of the second connecting tube 10 is larger than the outer diameter of the second chuck connecting shaft 5-6, and the second connecting tube 10 is sleeved outside the second chuck connecting shaft 5-6.
According to an embodiment of the invention, referring to fig. 1, a connecting shaft is connected between the first connecting cylinder 9 and the second connecting cylinder 10. The connecting shaft 4 is used for connecting the first connecting cylinder 9 and the second connecting cylinder 10, so that coaxiality of the two-side tightening mechanisms is guaranteed, and further, the dimensional accuracy of welding seams is guaranteed.
Further, the connecting shaft 4 is cylindrical, and the outer diameter of the connecting shaft 4 is 1/2-2/3 of the inner diameter of the machined end ring, thereby ensuring effective connection of the first connecting cylinder 9 and the second connecting cylinder 10. If the outer diameter of the connecting shaft 4 is too small, the strength of the connecting shaft is lowered, the first and second connecting cylinders 9 and 10 cannot be effectively connected, and if the outer diameter thereof is too large, the overall weight of the welding device is heavy, and waste is caused.
Further, referring to fig. 5, the connecting shaft 4 is provided with a plurality of lightening holes 4-1, so that the weight-reducing shell assembly positioning welding device is convenient to move and saves raw materials.
Further, the interval between the adjacent lightening holes in the circumferential direction of the connecting shaft is 80-90mm, the interval between the adjacent lightening holes in the axial direction of the connecting shaft is 35-45mm, and the single lightening hole 4-1 having a surface area of 2000-3000mm 2 Thereby, the effect of weight reduction can be achieved, and the first connecting cylinder 9 and the second connecting cylinder 10 can be effectively connected. The inventors found that if the interval between the adjacent lightening holes 4-1 is too small or the area of the single lightening hole 4-1 is too large, the strength of the connection shaft 4 is lowered and the function of connecting the first connection cylinder 9 and the second connection cylinder 10 cannot be effectively performed; if the interval between the adjacent lightening holes 4-1 is too large or the area of the single lightening hole 4-1 is too small, the effect of lightening cannot be effectively achieved.
According to an embodiment of the present invention, referring to fig. 1, a first gas protection device 2 is provided on the first tightening mechanism 3, the first gas protection device 2 is of a hollow structure, a through hole is provided on an outer wall of the first gas protection device 2, and the first gas protection device 2 is connected with an argon storage device through a hose. Argon is introduced into the first gas protection device 2 through a hose and is diffused to the periphery of the welding seam through the through holes in the first gas protection device 2. According to the invention, the gas protection device is arranged, so that the welding seam can be protected by argon during positioning welding, the welding seam is prevented from being oxidized in the welding process, and the welding seam quality is ensured.
Further, the through hole on the outer wall of the first gas protection device 2 is circular, elliptical or polygonal, and the specific shape thereof is not particularly limited, and can be arbitrarily selected according to actual needs by those skilled in the art.
Further, referring to fig. 4, two rows of through holes are arranged on the outer wall of the first gas protection device 2 along the circumferential direction, the two rows of through holes are arranged at intervals, the distance between adjacent same rows of through holes is 8-12mmm, the distance between adjacent different rows of through holes is 4-6mm, the through holes on the outer wall of the second gas protection device 6 are circular, and the aperture of the circular through holes is 0.8-1.2mm, so that argon discharged from the through holes can be ensured to effectively prevent welding seams from being oxidized in the welding process, ensure the quality of welding seams, and simultaneously avoid the problem of strength reduction of the first tightening mechanism 3 caused by too small distance between the through holes or too large aperture. The inventor finds that if the through hole spacing is too small or the through hole aperture is too large, the strength of the tightening mechanism is reduced, so that the butt joint of the piece adding end ring of the internal bracing machine and the sheet metal part cylinder cannot be effectively achieved; if the through hole spacing is too large or the through hole aperture is too small, the amount of argon gas coming out of the through holes is too small, and the welding seam cannot be effectively prevented from being oxidized in the welding process.
According to an embodiment of the present invention, referring to fig. 1, a second gas protection device 6 is provided on the second tightening mechanism 5, the second gas protection device 6 is of a hollow structure, a through hole is provided on an outer wall of the second gas protection device 6, and the second gas protection device 6 is connected with an argon storage device through a hose. Argon is introduced into the second gas protection device 6 through a hose and is diffused to the periphery of the welding seam through the through holes in the second gas protection device 6. According to the invention, the gas protection device is arranged, so that the welding seam can be protected by argon during positioning welding, the welding seam is prevented from being oxidized in the welding process, and the welding seam quality is ensured.
Further, the through hole on the outer wall of the second gas protection device 6 is circular, elliptical or polygonal, and the specific shape thereof is not particularly limited, and can be arbitrarily selected according to actual needs by those skilled in the art.
Further, referring to fig. 4, two rows of through holes are arranged on the outer wall of the second gas protection device 6 along the circumferential direction, the two rows of through holes are arranged at intervals, the distance between adjacent same rows of through holes is 8-12mmm, the distance between adjacent different rows of through holes is 4-6mm, the through holes on the outer wall of the second gas protection device 6 are circular, and the aperture of the circular through holes is 0.8-1.2mm, so that argon discharged from the through holes can be ensured to effectively prevent welding seams from being oxidized in the welding process, ensure the quality of welding seams, and simultaneously avoid the problem of strength reduction of the second tightening mechanism 5 caused by too small distance between the through holes or too large aperture. The inventor finds that if the through hole spacing is too small or the through hole aperture is too large, the strength of the tightening mechanism is reduced, so that the butt joint of the piece adding end ring of the internal bracing machine and the sheet metal part cylinder cannot be effectively achieved; if the through hole spacing is too large or the through hole aperture is too small, the amount of argon gas coming out of the through holes is too small, and the welding seam cannot be effectively prevented from being oxidized in the welding process.
Further, referring to fig. 1, the housing combination welding device further includes a bracket 8, where the bracket 8 is generally disposed at a lower portion of the housing combination welding device, and the bracket 8 is used to support the housing combination welding device, so as to facilitate use and operation. Preferably, the support 8 is a tripod.
According to the shell combination positioning welding device disclosed by the embodiment of the invention, the two ends of the shell combination positioning welding device are respectively provided with the tightening mechanisms, the outer diameters of the tightening members of the tightening mechanisms can be changed, and the joint of the inner tightening member end ring and the sheet metal part cylinder is used for tightening the outer diameter of the tightening member to be equal to the theoretical inner diameter of the sheet metal part cylinder, so that the easily-deformed sheet metal part cylinder and the inner diameter of the machine tightening member end ring are both braced to the theoretical circle. Meanwhile, the consistency of the weld joint sizes of products in different batches can be ensured, and the influence of human factors on the welding quality due to the weld joint sizes and the butt joint gaps is eliminated; the invention is provided with the gas protection device, so that the welding seam can be protected by argon gas during positioning welding, the welding seam is prevented from being oxidized in the welding process, and the quality of the welding seam is ensured. Therefore, the device can ensure that the coaxiality of the machined end ring and the sheet metal part cylinder is within 0.1mm, and has the advantages of being accurate and reliable in positioning, capable of providing effective argon back protection, capable of avoiding joint dislocation, required precision of cylinder roundness and the like.
In another aspect of the present invention, the present invention provides a method for performing a welding operation by using the device for welding and positioning a housing assembly according to the above embodiment, including:
(1) Sleeving an machined end ring to be welded and a sheet metal part cylinder outside a shell combined positioning welding device, and arranging the machined end ring at two ends of the sheet metal part cylinder;
(2) The butt joint positions of the machined part end ring and the sheet metal part cylinder are respectively opposite to a first tightening part 3-3 and a second tightening part 5-3, and the first tightening mechanism 3 and the second tightening mechanism 5 are rotated to enable the outer diameters of the first tightening part 3-3 and the second tightening part 5-3 to be increased until the outer diameters of the first tightening part 3-3 and the second tightening part 5-3 are equal to the theoretical inner diameter of the sheet metal part cylinder;
(3) Argon is supplied along with the first gas protection device 2 and the second gas protection device 6, and the butt joint part of the machined end ring and the sheet metal part cylinder is welded. In this step, the welded portion corresponding to the first tightening mechanism 3 may be welded first, the welded portion corresponding to the second tightening mechanism 5 may be welded first, or the welded portions at both ends may be welded simultaneously.
According to the positioning welding method disclosed by the embodiment of the invention, the outer diameter of the tightening piece is increased by rotating the tightening mechanism, and the joint of the end ring of the inner tightening machine and the sheet metal part cylinder is used until the outer diameter of the tightening piece is equal to the theoretical inner diameter of the sheet metal part cylinder sleeve, so that the joint size and gap of a welding seam are ensured, and the technical requirements of welding personnel are reduced. Meanwhile, the consistency of the weld joint sizes of products in different batches can be ensured, and the influence of human factors on the welding quality due to the weld joint sizes and the butt joint gaps is eliminated; according to the invention, through the gas protection device, the welding seam can be protected by argon during positioning welding, so that the welding seam is prevented from being oxidized in the welding process, and the welding seam quality is ensured. Therefore, the method can ensure that the coaxiality of the machined end ring and the sheet metal part cylinder is within 0.1mm, and has the advantages of being accurate and reliable in positioning, capable of providing effective argon back protection, capable of avoiding joint dislocation, and capable of avoiding the precision requirement of cylinder roundness.
It should be noted that the other parts of the present invention are not exhaustive, and are all known in the art.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (8)
1. A housing combination tack welding device, comprising:
the first tightening mechanism comprises a first tightening piece, the first tightening piece is cylindrical, the outer diameter of the first tightening piece is changeable, a first gas protection device is arranged on the first tightening mechanism, the first gas protection device is of a hollow structure, a through hole is formed in the outer wall of the first gas protection device, the first gas protection device is connected with the argon storage device through a hose, the first tightening mechanism further comprises a first rotating shaft, a first chuck connecting shaft, a first centering chuck and a first tightening piece connecting piece, the first rotating shaft is connected with the first chuck connecting shaft, the first rotating shaft drives the first chuck connecting shaft to rotate, the first chuck connecting shaft is connected with the first centering chuck, the first chuck connecting shaft drives the first centering chuck to rotate, a plane thread is arranged on the first centering chuck, a gear is arranged on the first tightening piece connecting piece, the plane thread on the first centering chuck is connected with the first tightening piece, and the first tightening piece is connected with the first tightening piece through the first tightening piece, and the first tightening piece is driven to move towards the first tightening piece or the first tightening piece is driven to move towards the first tightening piece through the first tightening piece;
the second tightening mechanism comprises a second tightening piece, the second tightening piece is cylindrical, the outer diameter of the second tightening piece is changeable, a second gas protection device is arranged on the second tightening mechanism, the second gas protection device is of a hollow structure, a through hole is formed in the outer wall of the second gas protection device, the second gas protection device is connected with the argon storage device through a hose, the second tightening mechanism further comprises a second rotating shaft, a second chuck connecting shaft, a second centering chuck and a second tightening piece connecting piece, the second rotating shaft is connected with the second chuck connecting shaft, the second rotating shaft drives the second chuck connecting shaft to rotate, the second chuck connecting shaft is connected with the second centering chuck, the second chuck connecting shaft drives the second centering chuck to rotate, a plane thread is arranged on the second centering chuck, a gear is arranged on the second tightening piece connecting piece, and the plane thread on the second centering chuck is connected with the second tightening piece through the second tightening piece, or the second tightening piece is driven by the second centering piece connecting piece to move outwards;
a first positioning fixing plate;
a second positioning fixing plate;
a connecting shaft;
the first positioning fixing disc is cylindrical, and the outer diameter of the first positioning fixing disc is 0.02-0.03mm smaller than the inner diameter of the end ring in the shell assembly;
the second connecting cylinder is connected with the lower end of the connecting shaft at one end, the other end of the second connecting cylinder is connected with the second positioning fixing disc through a connecting piece, and the second tightening mechanism is arranged between the second positioning fixing disc and the second connecting cylinder; the second positioning and fixing disc is cylindrical, and the outer diameter of the second positioning and fixing disc is 0.02-0.03mm smaller than the inner diameter of the end ring in the shell assembly.
2. The device for combining and tack welding housings of claim 1, wherein,
the first tightening mechanism further comprises a first rocking wheel, the first rocking wheel is connected with the first rotating shaft, and the first rocking wheel drives the first rotating shaft to rotate;
the first tightening member is composed of a plurality of mutually independent soft claws which simultaneously move to the center or outwards.
3. The device for combining and tack welding housings of claim 1, wherein,
the second tightening mechanism further comprises a second rocking wheel, the second rocking wheel is connected with the second rotating shaft, and the second rocking wheel drives the second rotating shaft to rotate;
the second tightening member is composed of a plurality of mutually independent soft claws which simultaneously move to the center or outwards.
4. The housing combination tack welding apparatus of claim 1 wherein the connecting shaft is cylindrical;
the outer diameter of the connecting shaft is 1/2-2/3 of the inner diameter of the machined end ring;
the connecting shaft is provided with a plurality of lightening holes;
the distance between the adjacent lightening holes along the circumferential direction of the connecting shaft is 80-90mm, and the distance between the adjacent lightening holes along the axial direction of the connecting shaft is 35-45mm;
the surface area of the single lightening hole is 2000-3000mm 2 。
5. The housing combination tack welding device of claim 1, wherein the through-hole in the outer wall of the first gas shield is circular, oval, or polygonal;
two rows of through holes are arranged on the outer wall of the first gas protection device along the circumferential direction, the two rows of through holes are arranged at intervals, the distance between the adjacent same row of through holes is 8-12mmm, and the distance between the adjacent different rows of through holes is 4-6mm;
when the through hole is circular, the through hole on the outer wall of the first gas protection device is circular, and the aperture of the circular through hole is 0.8-1.2mm.
6. The housing combination tack welding apparatus of claim 1, wherein the through-hole in the outer wall of the second gas shield is circular, oval, or polygonal;
two rows of through holes are arranged on the outer wall of the second gas protection device along the circumferential direction, the two rows of through holes are arranged at intervals, the distance between the adjacent same row of through holes is 8-12mmm, and the distance between the adjacent different rows of through holes is 4-6mm;
when the through hole is round, the through hole on the outer wall of the second gas protection device is round, and the aperture of the round through hole is 0.8-1.2mm.
7. The housing combination spot welding apparatus of any one of claims 1-6, further comprising a bracket for supporting the housing combination spot welding apparatus.
8. A method of tack welding using the housing assembly tack welding apparatus of any one of claims 1-7, comprising:
(1) Sleeving an machined end ring to be welded and a sheet metal part cylinder outside a shell combined positioning welding device, and arranging the machined end ring at two ends of the sheet metal part cylinder;
(2) The butt joint positions of the machine-added part end ring and the sheet metal part cylinder are respectively opposite to a first tightening part and a second tightening part, and the first tightening mechanism and the second tightening mechanism are rotated to enable the outer diameters of the first tightening part and the second tightening part to be increased until the outer diameters of the first tightening part and the second tightening part are equal to the theoretical inner diameter of the sheet metal part cylinder;
(3) Argon is provided along with the first gas protection device and the second gas protection device, and the butt joint part of the machined end ring and the sheet metal part cylinder is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559589.9A CN113385872B (en) | 2021-05-21 | 2021-05-21 | Shell combination positioning welding device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110559589.9A CN113385872B (en) | 2021-05-21 | 2021-05-21 | Shell combination positioning welding device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113385872A CN113385872A (en) | 2021-09-14 |
| CN113385872B true CN113385872B (en) | 2023-07-07 |
Family
ID=77618936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110559589.9A Active CN113385872B (en) | 2021-05-21 | 2021-05-21 | Shell combination positioning welding device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113385872B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713949B (en) * | 2022-03-23 | 2024-05-28 | 西安菲尔特金属过滤材料股份有限公司 | Automatic welding back gas protection device for metal mesh belt |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205767508U (en) * | 2016-06-08 | 2016-12-07 | 湖北工程学院 | A kind of sliding tight type pipe fitting compaction tool |
| CN106695077A (en) * | 2017-01-20 | 2017-05-24 | 烟台瓦鲁机器人自动化有限公司 | Inner support type wedge device inflated with protective gas at the back |
| DE102018115695A1 (en) * | 2018-06-28 | 2020-01-02 | Faurecia Emissions Control Technologies, Germany Gmbh | Device for producing a cylindrical or cone-shaped, circumferentially closed tubular body |
| CN210413257U (en) * | 2019-08-05 | 2020-04-28 | 江苏保龙设备制造有限公司 | Tower section of thick bamboo welding mount |
| CN110757088B (en) * | 2019-11-28 | 2021-10-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Expansion device for welding multi-channel circumferential weld of cylinder |
| CN112192007B (en) * | 2020-09-29 | 2022-06-21 | 中国航发动力股份有限公司 | Welding device and method for double-weld-joint expanding center support argon arc welding |
-
2021
- 2021-05-21 CN CN202110559589.9A patent/CN113385872B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113385872A (en) | 2021-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111151965B (en) | Adjustable profile inner support welding tool and using method | |
| CN113385872B (en) | Shell combination positioning welding device and method | |
| CN207723781U (en) | A kind of swelling device and its automatic pipe welder for automatic pipe welder | |
| US11478867B2 (en) | Machining device for duplex gear of high-precision reducer for robot, and use method thereof | |
| CN112192157B (en) | Assembly welding processing method for semi-closed flame tube with deep U-shaped rotary section | |
| US6931728B2 (en) | Test model for a gas turbine combustor dome and method of fabricating | |
| CN112091393B (en) | Assembly welding method and welding electrode for annular thin-wall sheet metal part of gas turbine | |
| CN212946197U (en) | Welding manipulator convenient to dismouting | |
| CN209256193U (en) | A kind of nest positioning device | |
| JPH04123865A (en) | Manufacture of combustor liner, depositing method and depositing device | |
| CN215509794U (en) | Argon arc welds frock of guarantor's concentricity | |
| CN211680502U (en) | Friction stir welding tool for fixing motor shell | |
| CN220029958U (en) | Major diameter shield body supports frock | |
| CN204913149U (en) | Heat exchanger welding position device of multi -angle mouthpiece structure | |
| CN219078787U (en) | Intermediate supporting structure of winding tube type heat exchanger in winding process | |
| CN219293043U (en) | Welding fixture for aircraft engine compartment | |
| CN219301383U (en) | Central cylinder structure of spiral plate type heat exchanger | |
| CN215855330U (en) | Three-section type three-dimensional rotating biological contact body device | |
| CN219336664U (en) | Welding device for assembled steel structure | |
| CN220637461U (en) | Auxiliary fixture for processing excircle of thin-wall hollow shaft | |
| CN220943879U (en) | Clamp for welding cone section cylinder of cap assembly in ship exhaust device | |
| CN217633823U (en) | Spherical seal head suitable for pressure container | |
| CN118513660A (en) | Spherical box bottom flange welding tool and welding method | |
| CN217193576U (en) | Sheet metal component argon arc welds positioning tool | |
| CN221603707U (en) | Major axis terminal surface alignment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |