CN113385872A - Shell combination positioning welding device and method - Google Patents
Shell combination positioning welding device and method Download PDFInfo
- Publication number
- CN113385872A CN113385872A CN202110559589.9A CN202110559589A CN113385872A CN 113385872 A CN113385872 A CN 113385872A CN 202110559589 A CN202110559589 A CN 202110559589A CN 113385872 A CN113385872 A CN 113385872A
- Authority
- CN
- China
- Prior art keywords
- piece
- tightening
- protection device
- gas protection
- holes
- 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.)
- Granted
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)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a shell combination positioning welding device and a shell combination positioning welding 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 structure of the second tightening mechanism is the same as that of the first tightening mechanism; a second positioning fixed disc; a first connecting cylinder; a second connecting cylinder and a connecting shaft. The device can ensure that the coaxiality of the machined part 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 the precision requirements of joint dislocation and cylinder roundness and the like.
Description
Technical Field
The invention relates to the technical field of positioning welding, in particular to a shell combination positioning welding device and method.
Background
A missile cabin section assembly of a certain model is formed by welding a machining part end ring and a sheet metal part cylinder. The machined end ring is a regular circumferential part, has larger thickness, can ensure the machining of the dimensional tolerance and the geometric tolerance and is not easy to deform. The sheet metal part cylinder is formed by rolling titanium alloy TC4-1.8 plates, is thin in thickness and easy to deform, adopts a plate roll bending and post-welding thermal expansion mode in the current production mode, and has the problems of low size and shape precision, ellipse shape in a natural state and the like.
The welding method of the machined part end ring and the sheet metal part cylinder at the present stage comprises the following steps: and taking the to-be-welded part of the end ring as a positioning reference, and repairing the weld 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 of a machining end ring and a sheet metal part cylinder is greatly different, and simultaneously, because the thickness of the sheet metal part cylinder is thin and easy to deform, the butt welding difficulty of the machining end ring and the sheet metal part cylinder is high, the size of a welding seam needs to be repaired by a fitter, the technical requirement on the fitter is high, and the efficiency is low. (2) The size precision of the welding line repaired by a fitter is poor, the difference between the welded products is large, and the precision stability is low. (3) When the tack welding is carried out, the diameter of the shell combination is small, gas protection is difficult to carry out, 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 is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a shell combination positioning welding device and a shell combination positioning welding method. The invention can ensure that the coaxiality of the machined part 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 the precision requirements of joint dislocation and cylinder roundness and the like.
In one aspect of the invention, the invention provides a shell combination positioning welding device. According to an embodiment of the present invention, the housing assembly 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 can be changed, 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, and the first gas protection device is connected with an argon gas 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 can be changed, 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 an argon gas storage device through a hose;
a first positioning fixed disc;
a second positioning fixed disc;
a connecting shaft;
one end of 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 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 second location fixed disk links to each other, the second props tight mechanism and sets up second location fixed disk with between the second connecting cylinder.
According to the shell combination positioning welding device provided 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 tightening members are used for internally tightening the joint of the end ring of the machining part and the cylinder of the sheet metal part, so that the outer diameter of the tightening members is equal to the theoretical inner diameter of the cylinder of the sheet metal part, and the easily deformed cylinder of the sheet metal part and the end ring of the machining part are both tightened to a theoretical circle. Meanwhile, the consistency of the sizes of the welding seams of products in different batches can be ensured, and the influence of human factors on the welding quality due to the sizes of the welding seams and the butt joint gaps is eliminated; the gas protection device is arranged, so that the welding line can be protected by argon gas during positioning welding, the welding line is prevented from being oxidized in the welding process, and the quality of the welding line is ensured. Therefore, the device can ensure that the coaxiality of the machining 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 the precision requirements of joint dislocation and cylinder roundness and the like.
In addition, the shell combination positioning welding device according to the above embodiment of the 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 member, 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, the first centering chuck is provided with a flat thread, the first tightening member connecting member is provided with a gear, the flat thread on the first centering chuck is engaged with the gear on the first tightening member connecting member, the first tightening member connecting member is connected to the first tightening member, and the first tightening member connecting member drives the first tightening member to move toward the center or move outward through the gear.
In some embodiments of the present invention, the first tightening mechanism further includes a first rocking wheel, the first rocking wheel is connected to the first rotating shaft, and the first rocking wheel drives the first rotating shaft to rotate.
In some embodiments of the present invention, the first fastening member is composed of a plurality of soft claws independent of each other, and the plurality of soft claws independent of each other are simultaneously moved toward the center or the outside, thereby achieving an effect of changing the outer diameter of the first fastening 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 member, 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, the second centering chuck is provided with a flat thread, the second tightening member connecting member is provided with a gear, the flat thread on the second centering chuck is engaged with the gear on the second tightening member connecting member, the second tightening member connecting member is connected to the second tightening member, and the second tightening member connecting member drives the second tightening member to move toward the center or outward through the gear.
In some embodiments of the present invention, the second tightening mechanism further includes a second rocking wheel, 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 invention, the second fastening member is composed of a plurality of soft jaws independent of each other, and the plurality of soft jaws independent of each other are simultaneously moved toward the center or the outside, thereby achieving an effect of changing the outer diameter of the second fastening member.
In some embodiments of the invention, the connecting shaft is cylindrical.
In some embodiments of the present 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 present invention, a pitch between adjacent lightening holes in a circumferential direction of the connecting shaft is 80 to 90mm, and a pitch between adjacent lightening holes in an axial direction of the connecting shaft is 35 to 45 mm.
In some embodiments of the invention, a singleThe surface area of the lightening hole is 2000-3000mm2。
In some embodiments of the invention, the first positioning fixture plate is cylindrical.
In some embodiments of the invention, the outer diameter of the first positioning stator is 0.02-0.03mm smaller than the inner diameter of an end ring in the housing assembly.
In some embodiments of the invention, the second positioning fixture plate is cylindrical.
In some embodiments of the invention, the outer diameter of the second locating disk is 0.02-0.03mm less than the inner diameter of an end ring in the housing assembly.
In some embodiments of the invention, the through-hole in the outer wall of the first gas protection means 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 8-12mmm, and the distance between adjacent through holes in different rows is 4-6 mm.
In some embodiments of the invention, the through holes on the outer wall of the first gas protection device are circular, and the diameter of the circular through holes is 0.8-1.2 mm.
In some embodiments of the invention, the through holes in the outer wall of the second gas protecting means are circular, oval 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 adjacent through holes in the same row is 8-12mmm, and the distance between adjacent through holes in different rows is 4-6 mm.
In some embodiments of the present invention, the through holes on the outer wall of the second gas protecting means are circular, and the diameter of the circular through holes is 0.8-1.2 mm.
In some embodiments of the present invention, the housing assembly tack welding apparatus further comprises a support for supporting the housing assembly tack welding apparatus.
In another aspect of the present invention, the present invention provides a positioning welding method using the casing combination positioning welding device described in the above embodiments, including:
(1) sleeving a machining end ring to be welded and a sheet metal part cylinder outside a shell combined positioning welding device, and placing the machining end ring at two ends of the sheet metal part cylinder;
(2) the two butt joints of the end ring of the machining element and the sheet metal part cylinder are respectively opposite to a first clamping piece and a second clamping piece, and the first clamping mechanism and the second clamping mechanism are rotated to increase the outer diameters of the first clamping piece and the second clamping piece until the outer diameters of the first clamping piece and the second clamping piece are equal to the theoretical inner diameter of the sheet metal part cylinder;
(3) and (3) welding the butt joint of the machining part end ring and the sheet metal part cylinder along with the supply of argon gas by the first gas protection device and the second gas protection device.
According to the positioning welding method provided by the embodiment of the invention, the outer diameter of the supporting piece is increased by rotating the supporting mechanism, and the outer diameter is used at the butt joint of the end ring of the adding piece and the cylinder of the sheet metal part of the internal supporting machine until the outer diameter of the supporting piece is equal to the theoretical inner diameter of the cylinder sleeve of the sheet metal part, so that the butt joint size and the gap of a welding seam are ensured, and the technical requirements on welding personnel are reduced. Meanwhile, the consistency of the sizes of the welding seams of products in different batches can be ensured, and the influence of human factors on the welding quality due to the sizes of the welding seams and the butt joint gaps is eliminated; according to the invention, through the gas protection device, 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 welding seam quality is ensured. Therefore, the method can ensure that the coaxiality of the machined part 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 the precision requirements of joint dislocation and cylinder roundness and the like.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a shell assembly positioning welding device according to an embodiment of the invention.
Fig. 2 is a schematic cross-sectional view of the first tightening mechanism or the second tightening mechanism of the shell assembly tack welding apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic partial cross-sectional view of a shell assembly tack welding apparatus according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of the first tightening mechanism or the second tightening mechanism of the shell assembly tack welding device according to the embodiment of the invention.
Fig. 5 is a schematic structural diagram of a connecting shaft of the shell combination positioning welding device according to the embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to 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", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In one aspect of the present invention, the present invention provides a shell assembly tack welding apparatus, referring to fig. 1, the apparatus comprising: the device comprises a first positioning fixed disk 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 fixed disk 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, a first tightening mechanism 3, said first tightening mechanism 3 comprising a first tightening member 3-3, said first tightening member 3-3 being cylindrical, the outer diameter of said first tightening member 3-3 being variable. The first tightening mechanism 3 further comprises a first rotating shaft 3-2, a first chuck connecting shaft 3-6, a first centering 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 centering chuck 3-5 through a plurality of M4 screws, the first chuck connecting shaft 3-6 drives the first centering chuck 3-5 to rotate, the first centering chuck 3-5 is provided with plane threads, the first tightening piece connecting piece 3-4 is provided with gears, the plane threads on the first centering chuck 3-5 are meshed with the gears on the first tightening piece connecting piece 3-4, the first supporting piece connecting piece 3-4 is connected with the first supporting piece 3-3, and the first supporting piece connecting piece 3-4 drives the first supporting piece 3-3 to move towards the center or outwards through a gear, so that the outer diameter of the first supporting piece 3-3 is reduced or enlarged.
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 rocking wheel 3-1 is a manual wheel.
Further, the first supporting piece 3-3 consists 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 supporting piece 3-3, so that the function of automatically centering and tightly supporting the sheet metal part cylinder is realized.
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 the outer diameter of the second tightening member 5-3 may vary. 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, the second centering chuck 5-5 is provided with plane threads, the second tightening piece connecting piece 5-4 is provided with gears, the plane threads on the second centering chuck 5-5 are meshed with the gears on the second tightening piece connecting piece 5-4, the second fastener connecting piece 5-4 is connected with the second fastener 5-3, and the second fastener connecting piece 5-4 drives the second fastener 5-3 to move towards the center or outwards through a gear.
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 wheel.
Further, the second supporting piece 5-3 consists of a plurality of independent soft claws, preferably 3 soft claws, and the plurality of independent soft claws move towards the center or outwards at the same time, so that the effect of changing the outer diameter of the second supporting piece 5-3 is achieved, and the function of automatically centering and supporting the sheet metal part cylinder is realized.
According to the embodiment of the invention, referring to fig. 1, the first positioning fixing disc 1 is used for positioning the machined end ring at one end, ensuring the coaxiality of the end ring and the cylinder, ensuring the butt joint size of the welding seam of the end ring and the cylinder and preventing dislocation. The second positioning fixing disc 7 is an machined end ring for positioning the other end, so that the coaxiality of the end ring and the cylinder body is ensured, the butt joint 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 machining part is accurately butted with the metal sheet part cylinder.
Furthermore, the first positioning fixed disc 1 is cylindrical, and the outer diameter of the first positioning fixed disc 1 is 0.02-0.03mm smaller than the inner diameter of an end ring in the shell assembly, so that the end ring and a cylinder in the shell assembly can be smoothly sleeved outside the shell combination positioning and welding device, and the positioning and fixing effects of the positioning fixed disc can be guaranteed; the inventor finds that if the outer diameter of the first positioning 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 welding device, and if the outer diameter is too small, the positioning fixing effect cannot be effectively achieved.
Furthermore, the second positioning fixed disk 7 is cylindrical, and the outer diameter of the second positioning fixed disk 7 is 0.02-0.03mm smaller than the inner diameter of an end ring in the shell assembly, so that the end ring and a cylinder in the shell assembly can be smoothly sleeved outside the shell combination positioning welding device, and the positioning and fixing effects of the positioning fixed disk can be guaranteed; the inventor finds that if the outer diameter of the second positioning 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 welding device, and if the outer diameter is too small, the positioning fixing effect cannot be effectively achieved.
According to an embodiment of the present invention, referring to fig. 1 and 3, a first connecting cylinder 9, one end of the first connecting cylinder 9 is connected to one end of the connecting shaft 4, and the other end of the first connecting cylinder 9 is connected to the first positioning fixing plate 1 through a connecting member (not shown in the figure) which is connected to one end of the first connecting cylinder 9 through a screw. The first tightening mechanism is arranged between the first positioning fixed disc and the first connecting cylinder 9. It should be noted that the inner diameter of the first connecting cylinder 9 is larger than the outer diameter of the first chuck connecting shaft 3-6, and the first connecting cylinder 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 connecting cylinder 10, one end of the second connecting cylinder 10 is connected to the other end of the connecting shaft 4, and the other end of the second connecting cylinder 10 is connected to the second positioning fixing plate 7 through a connecting member (not shown in the figure) which is connected to one end of the second connecting cylinder 10 through a screw. The first tightening mechanism is arranged between the first positioning fixed disc and the second connecting cylinder 10. It should be noted that the inner diameter of the second connecting cylinder 10 is larger than the outer diameter of the second chuck connecting shaft 5-6, and the second connecting cylinder 10 is sleeved outside the second chuck connecting shaft 5-6.
According to an embodiment of the present 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, the coaxiality of the two side tightening mechanisms is guaranteed, and the size precision of a welding seam is further 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 reduced, and the first connecting cylinder 9 and the second connecting cylinder 10 cannot be effectively connected, and if the outer diameter is too large, the overall weight of the welding device is heavy, and waste is caused.
Further, referring to fig. 5, a plurality of lightening holes 4-1 are formed in the connecting shaft 4, so that the total weight of the lightening shell combined positioning welding device is reduced, the movement is convenient, and raw materials are saved.
Further, the distance between adjacent lightening holes along the circumferential direction of the connecting shaft is 80-90mm, the distance between adjacent lightening holes along the axial direction of the connecting shaft is 35-45mm, and the surface area of a single lightening hole 4-1 is 2000-3000mm2Therefore, the effect of reducing weight can be achieved, and effective connection of the first connecting cylinder 9 and the second connecting cylinder 10 can be guaranteed. The inventor finds that if the distance between the adjacent lightening holes 4-1 is too small or the area of a single lightening hole 4-1 is too large, the strength of the connecting shaft 4 is reduced, and the connecting shaft cannot effectively connect the first connecting cylinder 9 and the second connecting cylinder 10; if the distance between the adjacent lightening holes 4-1 is too large or the area of a 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, wherein the first gas protection device 2 is disposed on a first tightening mechanism 3, the first gas protection device 2 is a hollow structure, a through hole is disposed on an outer wall of the first gas protection device 2, and the first gas protection device 2 is connected to an argon gas 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 a through hole on 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 gas 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, oval or polygonal, and the specific shape thereof is not particularly limited, and can be selected by those skilled in the art according to actual needs.
Further, referring to fig. 4, two rows of through holes are formed in 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 through holes in the same row is 8-12mmm, the distance between adjacent through holes in different rows is 4-6mm, the through holes in 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 it is ensured that argon gas discharged from the through holes can effectively prevent the welding seam from being oxidized in the welding process, the quality of the welding seam is ensured, and meanwhile, the problem of strength reduction of the first tightening mechanism 3 caused by too small distance between the through holes or too large aperture can be avoided. The inventor finds that if the distance between the through holes is too small or the aperture of the through holes is too large, the strength of the tightening mechanism is reduced, and therefore the butt joint between the end ring of the added part of the internal support machine and the cylinder of the sheet metal part cannot be effectively realized; if the distance between the through holes is too large or the aperture of the through holes is too small, the amount of argon 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 protecting device 6 is provided, the second gas protecting device 6 is provided on the second tightening mechanism 5, the second gas protecting device 6 is a hollow structure, a through hole is provided on an outer wall of the second gas protecting device 6, and the second gas protecting device 6 is connected to an argon gas 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 a through hole on 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 gas 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 protecting device 6 is circular, oval or polygonal, and the specific shape thereof is not particularly limited, and can be selected by those skilled in the art according to actual needs.
Further, referring to fig. 4, two rows of through holes are formed in 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 through holes in the same row is 8-12mmm, the distance between adjacent through holes in different rows is 4-6mm, the through holes in 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 the argon gas discharged from the through holes can be ensured to effectively prevent the welding seam from being oxidized in the welding process, the quality of the welding seam is ensured, and meanwhile, the problem of strength reduction of the second tightening mechanism 5 caused by too small distance between the through holes or too large aperture can be avoided. The inventor finds that if the distance between the through holes is too small or the aperture of the through holes is too large, the strength of the tightening mechanism is reduced, and therefore the butt joint between the end ring of the added part of the internal support machine and the cylinder of the sheet metal part cannot be effectively realized; if the distance between the through holes is too large or the aperture of the through holes is too small, the amount of argon 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 assembly fixed-position welding device further includes a bracket 8, the bracket 8 is generally placed at a lower portion of the housing assembly fixed-position welding device, and the bracket 8 is used for supporting the housing assembly fixed-position welding device, so that the use and operation are convenient. Preferably, the support 8 is a tripod.
According to the shell combination positioning welding device provided 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 tightening members are used for internally tightening the joint of the end ring of the machining part and the cylinder of the sheet metal part, so that the outer diameter of the tightening members is equal to the theoretical inner diameter of the cylinder of the sheet metal part, and the easily deformed cylinder of the sheet metal part and the end ring of the machining part are both tightened to a theoretical circle. Meanwhile, the consistency of the sizes of the welding seams of products in different batches can be ensured, and the influence of human factors on the welding quality due to the sizes of the welding seams and the butt joint gaps is eliminated; the gas protection device is arranged, so that the welding line can be protected by argon gas during positioning welding, the welding line is prevented from being oxidized in the welding process, and the quality of the welding line is ensured. Therefore, the device can ensure that the coaxiality of the machining 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 the precision requirements of joint dislocation and cylinder roundness and the like.
In another aspect of the present invention, the present invention provides a positioning welding method using the casing combination positioning welding device described in the above embodiments, including:
(1) sleeving a machining end ring to be welded and a sheet metal part cylinder outside a shell combined positioning welding device, and placing the machining end ring at two ends of the sheet metal part cylinder;
(2) the two butt joints of the end ring of the machine processing element and the sheet metal part cylinder are respectively opposite to a first clamping piece 3-3 and a second clamping piece 5-3, and the first clamping mechanism 3 and the second clamping mechanism 5 are rotated to increase the outer diameter of the first clamping piece 3-3 and the second clamping piece 5-3 until the outer diameter of the first clamping piece 3-3 and the second clamping piece 5-3 is equal to the theoretical inner diameter of the sheet metal part cylinder;
(3) and (3) welding the butt joint of the machined part end ring and the sheet metal part cylinder along with the supply of argon gas by the first gas protection device 2 and the second gas protection device 6. In this step, the welding portion corresponding to the first tightening mechanism 3 may be welded first, the welding portion corresponding to the second tightening mechanism 5 may be welded first, or the welding portions at both ends may be welded at the same time.
According to the positioning welding method provided by the embodiment of the invention, the outer diameter of the supporting piece is increased by rotating the supporting mechanism, and the outer diameter is used at the butt joint of the end ring of the adding piece and the cylinder of the sheet metal part of the internal supporting machine until the outer diameter of the supporting piece is equal to the theoretical inner diameter of the cylinder sleeve of the sheet metal part, so that the butt joint size and the gap of a welding seam are ensured, and the technical requirements on welding personnel are reduced. Meanwhile, the consistency of the sizes of the welding seams of products in different batches can be ensured, and the influence of human factors on the welding quality due to the sizes of the welding seams and the butt joint gaps is eliminated; according to the invention, through the gas protection device, 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 welding seam quality is ensured. Therefore, the method can ensure that the coaxiality of the machined part 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 the precision requirements of joint dislocation and cylinder roundness and the like.
It is to be understood that other parts of the present invention, not specifically described, are known in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a casing combination fixed-position welding device which characterized in that includes:
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, 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, and the first gas protection device is connected with an argon gas 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 can be changed, 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 gas storage device through a hose;
a first positioning fixed disc;
a second positioning fixed disc;
a connecting shaft;
one end of the first connecting cylinder is connected with one end of the connecting shaft, the other 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 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 second location fixed disk links to each other, the second props tight mechanism and sets up second location fixed disk with between the second connecting cylinder.
2. The housing combination tack welding apparatus of claim 1, wherein the first tightening mechanism further comprises a first spindle, a first chuck coupling shaft, a first centering chuck, and a first tightening member coupling member, the first rotating shaft is connected with the first chuck connecting shaft and drives the first chuck connecting shaft to rotate, the first chuck connecting shaft is connected with the first centering chuck and drives the first centering chuck to rotate, the first centering chuck is provided with plane threads, the first tightening piece connecting piece is provided with a gear, the plane thread on the first centering chuck is meshed with the gear on the connecting piece of the first tightening piece, the first clamping piece connecting piece is connected with the first clamping piece, and the first clamping piece connecting piece drives the first clamping piece to move towards the center or outwards through a gear;
optionally, 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;
optionally, the first fastener is comprised of a plurality of soft independent jaws that move either centrally or outwardly simultaneously.
3. The housing combination tack welding apparatus of claim 1, wherein the second tightening mechanism further comprises a second spindle, a second chuck connecting shaft, a second centering chuck, and a second tightening member connecting member, the second rotating shaft is connected with the second chuck connecting shaft and drives the second chuck connecting shaft to rotate, the second chuck connecting shaft is connected with the second centering chuck and drives the second centering chuck to rotate, the second centering chuck is provided with plane threads, the second tightening piece connecting piece is provided with a gear, the plane thread on the second centering chuck is meshed with the gear on the connecting piece of the second tightening piece, the second clamping piece connecting piece is connected with the second clamping piece, and the second clamping piece connecting piece drives the second clamping piece to move towards the center or outwards through a gear;
optionally, 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;
optionally, the second fastener is comprised of a plurality of soft independent jaws that move either centrally or outwardly simultaneously.
4. The shell assembly tack welding apparatus of claim 1, wherein the connecting shaft is cylindrical;
optionally, the outer diameter of the connecting shaft is 1/2-2/3 of the inner diameter of the end ring of the machining element;
optionally, a plurality of lightening holes are formed in the connecting shaft;
optionally, the distance between adjacent lightening holes along the circumferential direction of the connecting shaft is 80-90mm, and the distance between adjacent lightening holes along the axial direction of the connecting shaft is 35-45 mm;
optionally, the surface area of a single lightening hole is 2000-3000mm2。
5. The housing assembly tack welding apparatus of claim 1, wherein the first tack retaining disk is cylindrical;
optionally, the outer diameter of the first positioning fixture disk is 0.02-0.03mm smaller than the inner diameter of an end ring in the housing assembly.
6. The housing assembly tack welding apparatus of claim 1, wherein the second tack fixing disk is cylindrical;
optionally, the outer diameter of the second positioning fixture disk is 0.02-0.03mm smaller than the inner diameter of an end ring in the housing assembly.
7. The shell assembly tack welding apparatus of claim 1, wherein the through hole on the outer wall of the first gas protection device is circular, oval or polygonal;
optionally, 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 through holes in the same row is 8-12mmm, and the distance between the adjacent through holes in different rows is 4-6 mm;
optionally, the through hole on the outer wall of the first gas protection device is circular, and the diameter of the circular through hole is 0.8-1.2 mm.
8. The shell assembly tack welding apparatus of claim 1, wherein the through hole on the outer wall of the second gas protection device is circular, oval or polygonal;
optionally, 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 through holes in the same row is 8-12mmm, and the distance between the adjacent through holes in different rows is 4-6 mm;
optionally, the through holes on the outer wall of the second gas protection device are circular, and the diameter of the circular through holes is 0.8-1.2 mm.
9. The housing assembly tack welding apparatus of any one of claims 1 to 8, further comprising a support for supporting the housing assembly tack welding apparatus.
10. A method for welding a position by using the shell combined positioning welding device of any one of claims 1 to 9, which is characterized by comprising the following steps:
(1) sleeving a machining end ring to be welded and a sheet metal part cylinder outside a shell combined positioning welding device, and placing the machining end ring at two ends of the sheet metal part cylinder;
(2) the two butt joints of the end ring of the machining element and the sheet metal part cylinder are respectively opposite to a first clamping piece and a second clamping piece, and the first clamping mechanism and the second clamping mechanism are rotated to increase the outer diameters of the first clamping piece and the second clamping piece until the outer diameters of the first clamping piece and the second clamping piece are equal to the theoretical inner diameter of the sheet metal part cylinder;
(3) and (3) welding the butt joint of the machining part end ring and the sheet metal part cylinder along with the supply of argon gas by the first gas protection device and the second gas protection device.
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 true CN113385872A (en) | 2021-09-14 |
| CN113385872B 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713949A (en) * | 2022-03-23 | 2022-07-08 | 西安菲尔特金属过滤材料股份有限公司 | Be used for metal mesh belt automatic weld back gas protection device |
Citations (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 |
| WO2020002508A1 (en) * | 2018-06-28 | 2020-01-02 | Faurecia Emissions Control Technologies, Germany Gmbh | Device for producing a cylinder-surface-shaped or cone-surface-shaped, circumferentially closed tubular body |
| CN110757088A (en) * | 2019-11-28 | 2020-02-07 | 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 |
| 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 |
| CN112192007A (en) * | 2020-09-29 | 2021-01-08 | 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
Patent Citations (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 |
| WO2020002508A1 (en) * | 2018-06-28 | 2020-01-02 | Faurecia Emissions Control Technologies, Germany Gmbh | Device for producing a cylinder-surface-shaped or cone-surface-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 |
| CN110757088A (en) * | 2019-11-28 | 2020-02-07 | 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 |
| CN112192007A (en) * | 2020-09-29 | 2021-01-08 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114713949A (en) * | 2022-03-23 | 2022-07-08 | 西安菲尔特金属过滤材料股份有限公司 | Be used for metal mesh belt automatic weld back gas protection device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113385872B (en) | 2023-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102873494B (en) | Umbrella-type inner support clamp for annular welding of elongated cylindrical workpieces | |
| CN111151965B (en) | Adjustable profile inner support welding tool and using method | |
| CN201702524U (en) | Titanium alloy girth welding fixture | |
| CN207723781U (en) | A kind of swelling device and its automatic pipe welder for automatic pipe welder | |
| CN113385872A (en) | Shell combination positioning welding device and method | |
| CN112192157B (en) | Assembly welding processing method for semi-closed flame tube with deep U-shaped rotary section | |
| US11478867B2 (en) | Machining device for duplex gear of high-precision reducer for robot, and use method thereof | |
| CN109822123A (en) | A kind of thin-walled cylindrical workpiece turning clamping method, fixture and processing unit (plant) | |
| CN108787803B (en) | Thin-wall pipe orifice shaping tool | |
| CN218695592U (en) | Clamp for circumferential butt welding of sheet metal parts | |
| CN212946197U (en) | Welding manipulator convenient to dismouting | |
| CN113399720B (en) | Outer casing honeycomb ring arc block milling clamp and method | |
| CN211953835U (en) | Heat exchanger shell side terminating weld groove structure | |
| CN212761974U (en) | Assembling device for pipeline welding position | |
| CN213053552U (en) | Pipeline welding auxiliary fixtures | |
| CN211649355U (en) | Natural gas line is welded junction group and is assembled device speedily carries out rescue work | |
| CN110977332B (en) | Manufacturing tool and manufacturing method for top structural part of crane | |
| CN209256193U (en) | A kind of nest positioning device | |
| JPH04123865A (en) | Manufacture of combustor liner, depositing method and depositing device | |
| CN211680502U (en) | Friction stir welding tool for fixing motor shell | |
| CN110961852A (en) | Spot welding device with graduation regulation | |
| CN215855330U (en) | Three-section type three-dimensional rotating biological contact body device | |
| CN212857411U (en) | Bearing type inner and outer die combined type circle holding device | |
| CN219944897U (en) | Automatic argon arc welding device for large-diameter annular pipeline | |
| CN219293043U (en) | Welding fixture for aircraft engine compartment |
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 |