CN117444505A - Welding tool for stainless steel heat insulation assembly and manufacturing method - Google Patents
Welding tool for stainless steel heat insulation assembly and manufacturing method Download PDFInfo
- Publication number
- CN117444505A CN117444505A CN202311401451.1A CN202311401451A CN117444505A CN 117444505 A CN117444505 A CN 117444505A CN 202311401451 A CN202311401451 A CN 202311401451A CN 117444505 A CN117444505 A CN 117444505A
- Authority
- CN
- China
- Prior art keywords
- plate
- welding
- heat insulation
- sliding
- insulation assembly
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 164
- 238000009413 insulation Methods 0.000 title claims abstract description 103
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 37
- 239000010935 stainless steel Substances 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000012937 correction Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- 238000010561 standard procedure Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/003—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to controlling of welding distortion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
Abstract
A welding tool for a stainless steel heat insulation assembly and a manufacturing method thereof comprise a bottom plate, sliding clamping plates, sliding supporting seats and brackets, wherein a plurality of sliding clamping plates are arranged on the bottom plate in a sliding and adjustable mode, a plurality of sliding supporting seats are arranged on the sliding clamping plates in a sliding and adjustable mode, and the brackets are arranged on the sliding supporting seats. The bracket comprises an abutting plate, a supporting plate and an arc-shaped top plate, wherein the abutting plate is installed at the lower end of the supporting plate, the abutting plate is connected with a sliding supporting seat, the arc-shaped top plate is installed at the upper end of the supporting plate, a fifth threaded hole is formed in the arc-shaped top plate, a counter bore is formed in the top of the fifth threaded hole, a positioning sleeve is installed in the counter bore, a heat insulation assembly for welding is attached to the arc-shaped top plate in a use state, the positioning hole in the heat insulation assembly is sleeved with the positioning sleeve, and a connecting bolt penetrates through the positioning sleeve to be connected with the fifth threaded hole in a rotating mode. According to the welding tool, through the modularized design, the heat insulation components with different sizes are positioned, and the automatic welding of the heat insulation components is realized through a welding method.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a welding tool for a stainless steel heat insulation assembly and a manufacturing method.
Background
The connecting pipe stainless steel heat insulation layer in a gas turbine product of a certain company is formed by assembling and splicing a plurality of stainless steel heat insulation components with cavities, the cavities of the stainless steel heat insulation components are filled with heat insulation layers, and the stainless steel heat insulation components adopt stainless steel plates with the thickness of 3 mm. Because the gas turbine connecting pipe structure is not a cylindrical structure with the same radius, but is formed by connecting two conical cylinders with different conicities, and the radiuses and conicities of the conical cylinders are different for connecting pipes with different types, the heat insulation components coated on the connecting pipes can be distinguished due to the types and the coated positions of the connecting pipes, so that the sizes of the stainless steel heat insulation components are various, the manufacturing of the stainless steel heat insulation components is realized, the forming size and the welding quality of the stainless steel heat insulation components are ensured, and the problem to be solved is urgently needed at present.
Disclosure of Invention
The invention aims to solve the technical problems that: solves the problems existing in the background art, and provides a welding tool and a manufacturing method for stainless steel heat insulation components, which realize the positioning and manufacturing of the stainless steel heat insulation components with different sizes.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: the welding tool for the stainless steel heat insulation assembly comprises a bottom plate, a sliding clamping plate, a sliding supporting seat and a bracket, wherein at least one sliding clamping plate is arranged on the bottom plate in a sliding and adjustable mode, at least one sliding supporting seat is arranged on the sliding clamping plate in a sliding and adjustable mode, and the bracket is arranged on the sliding supporting seat; the bracket comprises an abutting plate, a supporting plate and an arc-shaped top plate, wherein the abutting plate is installed at the lower end of the supporting plate, the abutting plate is connected with a sliding supporting seat, the arc-shaped top plate is installed at the upper end of the supporting plate, a fifth threaded hole is formed in the arc-shaped top plate, a counter bore is formed in the top of the fifth threaded hole, a positioning sleeve is installed in the counter bore, a heat insulation assembly for welding is attached to the arc-shaped top plate in a use state, the positioning hole in the heat insulation assembly is sleeved with the positioning sleeve, and a connecting bolt penetrates through the positioning sleeve to be connected with the fifth threaded hole in a rotating mode.
The bottom plate is provided with a plurality of countersunk head mounting holes, and the bottom plate is provided with a hollow structure.
The sliding clamping plate comprises a plate body, L-shaped plates are respectively arranged at two ends of the lower side of the plate body, limiting sliding grooves are formed between the L-shaped plates and the plate body, the sliding clamping plate is installed on the bottom plate in a sliding mode through the limiting sliding grooves on two sides of the bottom, second threaded holes are formed in the side faces of the L-shaped plates, and the first limiting bolts are screwed with the second threaded holes and can abut against the end faces of the bottom plate.
The downside of L shaped plate still is equipped with the third screw hole, and second stop bolt and third screw hole connect soon and can support the bottom surface of bottom plate.
The bottom surface of bottom plate corresponds the position of second stop bolt and is equipped with logical long spacing groove, and second stop bolt supports the bottom of spacing groove.
The sliding support seat comprises a support column, a clamping groove and a connecting plate, the bottom of the support column is provided with the clamping groove, the top of the support column is provided with the connecting plate, two side walls of the clamping groove are respectively provided with a fourth threaded hole, a third limit bolt is screwed on the fourth threaded hole, the sliding support seat is clamped on a plate body of the sliding clamping plate in a sliding manner through the clamping groove, and the third limit bolt abuts against the plate body to limit the sliding support seat; the butt joint plate is provided with a first connecting hole, the connecting plate at the top of the sliding support seat is provided with a second connecting hole, and the bolt penetrates through the first connecting hole and the second connecting hole to fixedly connect the bracket with the sliding support seat.
And positioning grooves are respectively formed in two sides of the plate body of the sliding clamping plate, and the third limit bolts are abutted against the bottoms of the positioning grooves.
The two ends of the arc-shaped top plate are respectively provided with a supporting plate, and the supporting plates are provided with threaded holes.
The manufacturing method of the stainless steel heat-insulating component adopts the welding fixture of the stainless steel heat-insulating component, and comprises the following steps:
s1, blanking: cutting the stainless steel plate by laser, wherein the cutting content comprises an inner layer plate, an outer layer plate and four side plates of the heat insulation assembly;
s2, rolling: respectively rolling and forming the inner layer plate, the outer layer plate and the two side plates;
s3, spot welding: assembling, spot welding and fixing the inner layer plate, the outer layer plate and the four side plates by manpower, and welding supporting rings in positioning holes on the inner layer plate and the outer layer plate, wherein the heat insulation layer is filled before or during spot welding;
s4, adjusting a welding tool: according to the size, hole site and radian of the heat insulation assembly, a corresponding number of sliding clamping plates are arranged on the bottom plate, a corresponding number of sliding supporting seats are arranged on the sliding clamping plates, and brackets corresponding to the radian of the heat insulation assembly are arranged on the sliding supporting seats;
s5, mounting: placing the heat insulation assembly subjected to spot welding on a welding tool, wherein the inner layer plate is against the upper side surface of the bracket;
s6, positioning: sleeving the positioning hole welded with the supporting ring into the positioning sleeve, and screwing the connecting bolt with the fifth threaded hole through the positioning sleeve; the connecting bolts are screwed in sequence from the arc-shaped middle part of the heat insulation assembly to two sides, so that the inner layer plate of the heat insulation assembly is attached to the upper side surface of the bracket;
and S7, welding the welding seam at the edge of the heat insulation assembly through a mechanical arm load welding gun.
In S7, the method further comprises the steps of establishing a welding seam template, a welding standard program and welding deviation correction;
s71, installing a three-dimensional laser scanner at one end of the mechanical arm, where the welding gun is installed;
s72, installing similar heat insulation components by using a welding tool, and ensuring that the positioning coordinates of the heat insulation components under a working coordinate system of the mechanical arm are identical;
s73, scanning welding seams of the heat insulation assembly through laser of a three-dimensional laser scanner, determining the center of a welding bead of the heat insulation assembly, and establishing a welding seam template of the part according to the data;
s74, programming a standard workpiece under the standard template to determine a standard program of the heat insulation assembly;
s75, when welding starts, different mechanical arm welding standard procedures and standard welding seam templates are called for different types of heat insulation components;
s76, scanning the existing welding seam by laser, calculating the center of the welding seam in real time according to the edge of the welding seam groove, and calculating the phase difference between the welding seam center and a standard template of the welding seam, wherein the difference is used as the difference of the welding gun to be corrected, and the difference is converted into an electric signal to be transmitted to a mechanical arm for action, so that correction is realized.
The invention has the following beneficial effects:
1. according to the welding tool, the bottom plate is used as a bearing platform through modularized design, stability of the welding tool is guaranteed, meanwhile, the base is also used for moving the sliding clamping plate, movement adjustment of the sliding clamping plate in the Y-axis direction is controlled, the sliding clamping plate is used for installing the sliding supporting seat, position adjustment of the sliding supporting seat in the X-axis direction is used for installing the bracket, various collocation modes are carried out aiming at heat insulation components with different shapes, various applicability of the tool is guaranteed, and the bracket has different sizes and diameters corresponding to the shape and radian of the heat insulation components. Through the structure, the heat insulation components with different sizes are positioned.
2. The welding method solves the problem of deformation welding deviation of the heat insulation assembly, and simultaneously, for the same kind of workpieces, only the welding seam characteristic template is required to be established for the first time, and after a new workpiece is replaced, the laser scanning deviation correcting technology can automatically realize welding deviation correction and automatically compensate the structural errors among the workpieces. The use of this technique will greatly save the operator the programming correction time for the welding procedure.
Drawings
FIG. 1 is a schematic view of a welding fixture of the present invention with one of the heat insulation assemblies.
Fig. 2 is a schematic structural view of a welding fixture with a sliding clamping plate mounted on a bottom plate and a sliding supporting seat mounted on the sliding clamping plate.
FIG. 3 is a schematic view of the structure of the base plate of the present invention.
FIG. 4 is a schematic view of a sliding card of the present invention.
Fig. 5 is a schematic view of a sliding support structure according to the present invention.
Fig. 6 is a schematic view of the structure of the bracket of the present invention.
Fig. 7 is a schematic structural view of another heat insulation assembly installed on the welding fixture of the present invention.
Fig. 8 is a schematic diagram of a laser scanner scanning feature.
FIG. 9 is a diagram showing deviation of the scanning result due to arc and welding analysis of the steel plate.
FIG. 10 is a schematic diagram of laser correction according to the present invention.
In the figure: the bottom plate 1, countersunk head mounting hole 11, spacing groove 12, hollow out construction 13, slip cardboard 2, plate body 21, constant head tank 22, L shaped plate 23, spacing spout 24, third screw hole 25, second screw hole 26, slip supporting seat 3, support column 31, draw-in groove 32, fourth screw hole 33, connecting plate 34, second connecting hole 35, bracket 4, butt joint plate 41, first connecting hole 42, backup pad 43, arc roof 44, fifth screw hole 45, counter bore 46, layer board 47, thermal insulation component 5, locating hole 51, connecting bolt 6, spacer 61, first spacing bolt 7, third spacing bolt 8, second spacing bolt 9.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Embodiment one:
referring to fig. 1-7, a welding fixture for a stainless steel heat insulation assembly comprises a bottom plate 1, a sliding clamping plate 2, a sliding supporting seat 3 and a bracket 4, wherein at least one sliding clamping plate 2 is arranged on the bottom plate 1 in a sliding and adjustable mode, at least one sliding supporting seat 3 is arranged on the sliding clamping plate 2 in a sliding and adjustable mode, and the bracket 4 is arranged on the sliding supporting seat 3; the bracket 4 comprises an abutting plate 41, a supporting plate 43 and an arc-shaped top plate 44, the abutting plate 41 is installed at the lower end of the supporting plate 43, the abutting plate 41 is connected with the sliding supporting seat 3, the arc-shaped top plate 44 is installed at the upper end of the supporting plate 43, a fifth threaded hole 45 is formed in the arc-shaped top plate 44, a counter bore 46 is formed in the top of the fifth threaded hole 45, a positioning sleeve 61 is installed in the counter bore 46, in a use state, a heat insulation assembly 5 for welding is attached to the arc-shaped top plate 44, a positioning hole 51 in the heat insulation assembly 5 is sleeved into the positioning sleeve 61, and a connecting bolt 6 penetrates through the positioning sleeve 61 to be screwed with the fifth threaded hole 45. According to the welding tool disclosed by the invention, the bottom plate 1 is used as a bearing platform through a modularized design, so that the stability of the welding tool is ensured, meanwhile, the base 1 is also used for moving the sliding clamping plate 2, the movement adjustment of the sliding clamping plate 2 in the Y-axis direction is controlled, the sliding clamping plate 2 is used for installing the sliding supporting seat 3, the position adjustment of the sliding supporting seat 3 in the X-axis direction is used for installing the bracket 4, various collocation modes are carried out aiming at the heat insulation components 5 with different shapes, the various applicability of the tool is ensured, and the bracket 4 has different sizes and diameters corresponding to the shape and radian of the heat insulation components 5. Through the structure, the heat insulation assemblies 5 with different sizes are positioned.
Referring to fig. 3, in order to facilitate the installation and fixation of the base plate 1 at the time of welding, four countersunk mounting holes 11 are provided in the base plate 1. The hollow structure 13 is arranged on the bottom plate 1, so that the weight of the bottom plate 1 is reduced.
Referring to fig. 2 and 4, the sliding clamping plate 2 comprises a plate body 21, two ends of the lower side of the plate body 21 are respectively provided with an L-shaped plate 23, a limiting chute 24 is formed between the L-shaped plate 23 and the plate body 21, the sliding clamping plate 2 is slidably mounted on the bottom plate 1 through the limiting chutes 24 on two sides of the bottom, a second threaded hole 26 is formed in the side face of the L-shaped plate 23, and the first limiting bolt 7 is in screwed connection with the second threaded hole 26 and can abut against the end face of the bottom plate 1. Through the structure, the limiting sliding adjustment of the sliding clamping plate 2 on the bottom plate 1 is realized, and the sliding clamping plate is limited through the first limiting bolt 7.
Further, the downside of L shaped plate 23 still is equipped with third screw hole 25, and second stop bolt 9 and third screw hole 25 connect soon and can support the bottom surface of bottom plate 1, further guarantee the spacing stability of slip cardboard 2 and bottom plate 1.
Furthermore, the bottom surface of the bottom plate 1 is provided with a through-length limiting groove 12 corresponding to the position of the second limiting bolt 9, and the second limiting bolt 9 abuts against the bottom of the limiting groove 12, so that the sliding clamping plate 2 can be prevented from being deviated when the second limiting bolt 9 is screwed down.
Referring to fig. 4, 5 and 6, the sliding support seat 3 comprises a support column 31, a clamping groove 32 and a connecting plate 34, the bottom of the support column 31 is provided with the clamping groove 32, the connecting plate 34 is installed at the top, the two side walls of the clamping groove 32 are respectively provided with a fourth threaded hole 33, a third limit bolt 8 is screwed on the fourth threaded hole 33, the sliding support seat 3 is clamped on the plate body 21 of the sliding clamping plate 2 in a sliding manner through the clamping groove 32, and the third limit bolt 8 abuts against the plate body 21 to limit the sliding support seat 3; the butt plate 41 is provided with a first connecting hole 42, the connecting plate 34 at the top of the sliding support seat 3 is provided with a second connecting hole 35, and a bolt penetrates through the first connecting hole 42 and the second connecting hole 35 to connect and fix the bracket 4 and the sliding support seat 3. Through the structure, the sliding support seat 3 is slidably adjusted along the sliding clamping plate 2.
Further, the two sides of the plate body 21 of the sliding clamping plate 2 are respectively provided with a positioning groove 22, the third limit bolt 8 abuts against the bottom of the positioning groove 22, the installation stability of the sliding support seat 3 is improved, and the sliding support seat 3 can be prevented from falling off.
Referring to fig. 6 and 7, the two ends of the arc-shaped top plate 44 are respectively provided with a supporting plate 47, and threaded holes are formed in the supporting plates 47. The two ends of the arc-shaped top plate 44 are respectively provided with a supporting plate 47, so that the stability of installing different heat insulation assemblies 5 is ensured, and particularly, the heat insulation assemblies 5 with narrow widths are arranged.
Embodiment two:
the manufacturing method of the stainless steel heat-insulating component adopts the welding fixture of the stainless steel heat-insulating component, and comprises the following steps:
s1, blanking: the stainless steel plate is cut by laser, and the cutting content comprises an inner layer plate, an outer layer plate and four side plates of the heat insulation assembly 5.
S2, rolling: and rolling and forming the inner layer plate, the outer layer plate and the two side plates respectively. The other two side plates are straight plates, and rolling is not needed.
S3, spot welding: the inner plate, the outer plate and the four side plates are assembled and fixed by manual spot welding, and the supporting rings are welded in the positioning holes 51 on the inner plate and the outer plate, wherein the heat insulation layer is filled before or during spot welding.
For example, the heat insulating layer is first mounted on the inner panel and then spot welded, or the heat insulating layer is filled when only the outer panel or one side panel remains.
S4, adjusting a welding tool: according to the size, hole position and radian of the heat insulation assembly 5, a corresponding number of sliding clamping plates 2 are installed on the bottom plate 1, a corresponding number of sliding supporting seats 3 are installed on the sliding clamping plates 2, and brackets 4 corresponding to the radian of the heat insulation assembly 5 are installed on the sliding supporting seats 3. Referring to fig. 1, a structural view is installed for a large-sized heat insulating module 5, and referring to fig. 7, a structural view is installed for a small-sized heat insulating module 5. Through the flexible selection to slip cardboard 2, slip supporting seat 3, bracket 4, realize the thermal-insulated subassembly 5 of different specification sizes fixed.
S5, mounting: the spot-welded heat insulation assembly 5 is placed on the welding tool with the inner layer plate against the upper side of the bracket 4.
S6, positioning: the positioning hole 51 welded with the supporting ring of the heat insulation assembly 5 is sleeved into the positioning sleeve 61, and the connecting bolt 6 passes through the positioning sleeve 61 to be screwed with the fifth threaded hole 45; the connecting bolts 6 are screwed in sequence from the arc middle part of the heat insulation assembly 5 to two sides, so that the inner layer plate of the heat insulation assembly 5 is attached to the upper side face of the bracket 4.
And S7, welding the welding seam at the edge of the heat insulation assembly 5 through a mechanical arm load welding gun.
Through the method, the heat insulation assemblies 5 with different specifications and sizes are fixed and welded.
Embodiment III:
the heat insulation assembly is approximately fixed at the welding line position of the heat insulation assembly 5 with the same specification and size through a welding tool, but due to the fact that structural errors exist, the same welding line can deviate in different situations in space, and the deformation of the stainless steel plate in the welding process is serious. For the insulation assembly 5, since the overall shape is a cone, welding deformation will be one of the major obstacles to robotic arm programming.
Therefore, in S7, the method further comprises the steps of establishing a welding seam template, a welding standard program and welding deviation correction;
and S71, installing a three-dimensional laser scanner at one end of the mechanical arm, on which the welding gun is installed. And identifying characteristic position data of the welding spot of the welding seam in real time through laser scanning, and guiding the robot to correct the welding track.
S72, the same type of heat insulation assembly 5 is installed by using a welding tool, so that the same positioning coordinates of the heat insulation assembly 5 under the working coordinate system of the mechanical arm are ensured, and the welding precision is ensured.
S73, scanning welding seams of the heat insulation assembly 5 through laser of a three-dimensional laser scanner, determining the welding bead center of the heat insulation assembly 5, and establishing a welding seam template of the part according to the data. The welding seam of the heat insulation assembly 5 with the specification and the size is set in a standardized mode, and a correction comparison template is established.
S74, programming a standard workpiece under the standard template to determine a standard program of the heat insulation assembly 5.
S75, when welding starts, different mechanical arm welding standard procedures and standard welding seam templates are called for different types of heat insulation assemblies 5. And the program is standardized and automatic, corresponding programs are called for different heat insulation assemblies 5, repeated programming is reduced, and efficiency is improved.
S76, scanning the existing welding seam by laser, calculating the center of the welding seam in real time according to the edge of the welding seam groove, and calculating the phase difference between the welding seam center and a standard template of the welding seam, wherein the difference is used as the difference of the welding gun to be corrected, and the difference is converted into an electric signal to be transmitted to a mechanical arm for action, so that correction is realized.
Specifically, in order to solve the problem of real-time performance of the weld joint position, a laser scanning feature recognition technology is introduced, and a three-dimensional laser scanner is loaded on a mechanical arm. Characteristic position data of welding spots of the welding seam are identified in real time through laser scanning, and the mechanical arm is guided to rectify the track of the welding seam, so that automatic welding rectification of the mechanical arm is realized. The linear laser of the three-dimensional laser scanner can identify the welding line of the arcing section in advance, and the welding gun is in an untouched state to be welded. The weld features after laser scanning are received by the image processing system, and the position data of the weld center at the moment is obtained through the identification and calculation of the weld features at the moment. The line laser is always kept at the front end of the welding point at a certain distance in the welding process, so that the data is required to be transmitted to the mechanical arm for receiving after being delayed for a fixed time, and when the welding gun receives the position data and is ready to process, the laser scanning results in the first seconds are actually executed.
The principle of laser scanning is that the linear characteristics with obvious differences can be formed at the welding seam by extracting the edge characteristics at the two ends of the welding seam groove and highlighting the edge characteristics at the two sides of the groove through laser, as shown in fig. 8. The image formed by the linear laser is intercepted by a camera of the laser scanner. For the welding mechanical arm, the bottom of the groove is the welding spot position. When the linear laser irradiates the groove at an angle of 30 degrees, the linear laser is divided into 4 folding line segments by the edge of the groove and the bottom of the groove, and the intersection points formed between the folding line segments are groove characteristic information.
But this information obtained cannot be directly used as positional data to direct the welding of the robotic arm. This is because for workpieces such as stainless steel insulation, the weld formed by the arcuate plate will form a bend in space, while for the laser scanner's own image extraction device, the extracted image will always be two-dimensional planar image information, which results in the identified groove feature points will be extremely erroneous due to the angle, as shown in fig. 9. And when the bevel positions at the same position are inclined at different angles, the bevel characteristic points extracted by the laser scanner change in position.
Because of uncertainty of the laser scanning result, if only the identified characteristic points are used as welding positions, gun collision accidents can be caused by unclear description of deep space ordinate. How to effectively utilize the laser scanning result to rectify the deviation of the stainless steel heat insulation component which deforms at the time, and the method for calibrating the characteristic template is adopted. And closing a welding instruction of the welding machine, taking a welding wire end point with a fixed length as a welding point, and simulating a real welding path to move close to the bottom of the welding bead. And simultaneously, starting a laser scanner to scan a standard welding line which is not welded currently, intercepting laser focal characteristics formed by laser lines and the welding line morphology each time at a fixed time, for example, 0.5s, and sending a mechanical arm moving coordinate signal to the mechanical arm at a time of 0.5 s. One pass around the weld of the insulation assembly in this mode results in a scan of the template ab with the groove characteristics in the a weld path, as shown in fig. 10. After the template is established, the structural error generated by the same heat insulation assembly is relatively large or small, and the error cannot exceed the linear laser identification area. Therefore, when the actual welding is started, the welding program A is operated, the laser scanner scans the current welding line in real time, and the groove morphology feature a 'b' at the current time can be obtained. Since the laser scanner recognizes the focus point recorded by the intersection of the linear laser and the weld, the position coordinates of the point are quantifiable data and the same program is run, the direction of the welding gun will remain consistent. Therefore, the deviation amount |x1, y1, z1| of the welding point on the current welding line position can be rapidly and accurately obtained by differentiating the template ab and the real-time characteristic a 'b'. The deviation amount at the moment is added to the coordinate instruction of the mechanical arm at the corresponding moment in the future (the laser scanner recognizes that the mechanical arm is positioned before welding, so the deviation amount result is delayed to act on the future welding point). Along with the continuous scanning, each 0.5s generates a deviation value, and the path of the mechanical arm is continuously corrected through the deviation value, so that an effective real-time deviation correcting effect is formed.
The technical method solves the problem of deformation welding deviation of the heat insulation assembly, and simultaneously, for the same kind of workpieces, only the welding seam characteristic template is needed to be established for the first time, and after a new workpiece is replaced, the laser scanning deviation correcting technology can automatically realize welding deviation correction and automatically compensate the structural errors among the workpieces. The use of this technique will greatly save the operator the programming correction time for the welding procedure. At present, the welding efficiency is improved by more than 50% compared with the prior welding efficiency through the test operation of taking over the heat insulation layer for the actual products such as 9HA.02 and 7HA.02.
Claims (10)
1. The utility model provides a stainless steel thermal-insulated subassembly welding frock which characterized in that: the sliding type automobile seat comprises a bottom plate (1), a sliding clamping plate (2), a sliding supporting seat (3) and a bracket (4), wherein at least one sliding clamping plate (2) is arranged on the bottom plate (1) in a sliding and adjustable mode, at least one sliding supporting seat (3) is arranged on the sliding clamping plate (2) in a sliding and adjustable mode, and the bracket (4) is arranged on the sliding supporting seat (3); bracket (4) are including butt joint board (41), backup pad (43) and arc roof (44), butt joint board (41) are installed to the lower extreme of backup pad (43), butt joint board (41) are connected with sliding support seat (3), arc roof (44) are installed to the upper end of backup pad (43), be equipped with fifth screw hole (45) on arc roof (44), the top of fifth screw hole (45) is equipped with counter bore (46), position sleeve (61) are installed in counter bore (46), under the state of use, be used for welded thermal-insulated subassembly (5) laminating on arc roof (44), locating hole (51) on thermal-insulated subassembly (5) embolia position sleeve (61), connecting bolt (6) pass position sleeve (61) and fifth screw hole (45) spin.
2. The stainless steel heat insulation assembly welding fixture of claim 1, wherein: the base plate (1) is provided with a plurality of countersunk head mounting holes (11), and the base plate (1) is provided with a hollow structure (13).
3. The stainless steel heat insulation assembly welding fixture of claim 1, wherein: the utility model provides a slip cardboard (2) is including plate body (21), the downside both ends of plate body (21) are equipped with L shaped plate (23) respectively, form spacing spout (24) between L shaped plate (23) and plate body (21), slip cardboard (2) are through the gliding installation of spacing spout (24) of bottom both sides to bottom plate (1), the side of L shaped plate (23) is provided with second screw hole (26), first stop bolt (7) and second screw hole (26) connect soon and can support the terminal surface of bottom plate (1).
4. A stainless steel insulation assembly welding fixture as claimed in claim 3, wherein: the lower side of the L-shaped plate (23) is also provided with a third threaded hole (25), and the second limit bolt (9) is screwed with the third threaded hole (25) and can be abutted against the bottom surface of the bottom plate (1).
5. The stainless steel heat insulation assembly welding fixture of claim 4, wherein: the bottom surface of bottom plate (1) corresponds the position of second spacing bolt (9) and is equipped with logical long spacing groove (12), and second spacing bolt (9) support the bottom in spacing groove (12).
6. The stainless steel heat insulation assembly welding fixture of claim 1, wherein: the sliding support seat (3) comprises a support column (31), a clamping groove (32) and a connecting plate (34), the clamping groove (32) is formed in the bottom of the support column (31), the connecting plate (34) is installed at the top, fourth threaded holes (33) are respectively formed in two side walls of the clamping groove (32), third limit bolts (8) are screwed on the fourth threaded holes (33), the sliding support seat (3) is clamped on a plate body (21) of the sliding clamping plate (2) in a sliding manner through the clamping groove (32), and the third limit bolts (8) abut against the plate body (21) to limit the sliding support seat (3); be equipped with first connecting hole (42) on butt plate (41), be equipped with second connecting hole (35) on connecting plate (34) at sliding support seat (3) top, the bolt passes first connecting hole (42) and second connecting hole (35) and is connected bracket (4) and sliding support seat (3) fixedly.
7. The stainless steel heat insulation assembly welding fixture of claim 6, wherein: positioning grooves (22) are respectively formed in two sides of a plate body (21) of the sliding clamping plate (2), and the third limit bolts (8) are abutted against the bottoms of the positioning grooves (22).
8. The stainless steel heat insulation assembly welding fixture of claim 1, wherein: two ends of the arc-shaped top plate (44) are respectively provided with a supporting plate (47), and threaded holes are formed in the supporting plates (47).
9. A method for manufacturing a stainless steel heat insulation assembly, which is characterized by adopting the welding fixture for the stainless steel heat insulation assembly according to any one of claims 1-8, and comprising the following steps:
s1, blanking: cutting the stainless steel plate by laser, wherein the cutting content comprises an inner layer plate, an outer layer plate and four side plates of the heat insulation assembly (5);
s2, rolling: respectively rolling and forming the inner layer plate, the outer layer plate and the two side plates;
s3, spot welding: assembling, spot welding and fixing the inner layer plate, the outer layer plate and the four side plates by manpower, and welding a supporting ring in a positioning hole (51) on the inner layer plate and the outer layer plate, wherein the heat insulation layer is filled before or during spot welding;
s4, adjusting a welding tool: according to the size, hole site and radian of the heat insulation component (5), a corresponding number of sliding clamping plates (2) are arranged on the bottom plate (1), a corresponding number of sliding supporting seats (3) are arranged on the sliding clamping plates (2), and brackets (4) corresponding to the radian of the heat insulation component (5) are arranged on the sliding supporting seats (3);
s5, mounting: placing the heat insulation assembly (5) subjected to spot welding on a welding tool, wherein the inner layer plate is against the upper side surface of the bracket (4);
s6, positioning: the positioning hole (51) welded with the supporting ring of the heat insulation assembly (5) is sleeved into the positioning sleeve (61), and the connecting bolt (6) passes through the positioning sleeve (61) to be screwed with the fifth threaded hole (45); the connecting bolts (6) are screwed in sequence from the arc-shaped middle part of the heat insulation assembly (5) to two sides, so that the inner layer plate of the heat insulation assembly (5) is attached to the upper side face of the bracket (4);
and S7, welding the welding seam at the edge of the heat insulation assembly (5) through a mechanical arm load welding gun.
10. The method for manufacturing the stainless steel heat insulation assembly according to claim 9, wherein: in S7, the method further comprises the steps of establishing a welding seam template, a welding standard program and welding deviation correction;
s71, installing a three-dimensional laser scanner at one end of the mechanical arm, where the welding gun is installed;
s72, installing similar heat insulation components (5) by utilizing a welding tool, and ensuring that the positioning coordinates of the heat insulation components (5) under a mechanical arm working coordinate system are the same;
s73, scanning welding seams of the heat insulation assembly (5) through laser of a three-dimensional laser scanner, determining the welding bead center of the heat insulation assembly (5), and establishing a welding seam template of the part according to the data;
s74, programming a standard workpiece under the standard template to determine a standard program of the heat insulation assembly (5);
s75, when welding starts, different mechanical arm welding standard procedures and standard welding seam templates are called for different types of heat insulation components (5);
s76, scanning the existing welding seam by laser, calculating the center of the welding seam in real time according to the edge of the welding seam groove, and calculating the phase difference between the welding seam center and a standard template of the welding seam, wherein the difference is used as the difference of the welding gun to be corrected, and the difference is converted into an electric signal to be transmitted to a mechanical arm for action, so that correction is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311401451.1A CN117444505A (en) | 2023-10-26 | 2023-10-26 | Welding tool for stainless steel heat insulation assembly and manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311401451.1A CN117444505A (en) | 2023-10-26 | 2023-10-26 | Welding tool for stainless steel heat insulation assembly and manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117444505A true CN117444505A (en) | 2024-01-26 |
Family
ID=89579313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311401451.1A Pending CN117444505A (en) | 2023-10-26 | 2023-10-26 | Welding tool for stainless steel heat insulation assembly and manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117444505A (en) |
-
2023
- 2023-10-26 CN CN202311401451.1A patent/CN117444505A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9074881B2 (en) | Measurement system, pipe handling system and method of joining pipe sections | |
| CN104708239B (en) | CCD-based large-scale marine pipeline initial point identification and positioning method | |
| CN111532379A (en) | Ship anchor platform structure and machining method thereof | |
| FI101946B (en) | Welding process for aluminum sheet and with the process produced in the sphere so-called LNG tank or equivalent | |
| CN103231162A (en) | Device and method for visual detection of welding quality of robot | |
| US20200246898A1 (en) | Apparatus and method for automation of weld seams machining | |
| CN108406114B (en) | Arc T-shaped angle joint double-face welding method | |
| CN115026480B (en) | Full-automatic assembling and welding device and method for ocean platform jacket | |
| CN106903431A (en) | A kind of automobile chair frame laser welding system | |
| CN115464263A (en) | Automatic tracking method, detection method and device for laser welding seam | |
| CN209021508U (en) | A kind of welding robot and soldering cramping apparatus self-checking device | |
| CN113894404B (en) | Friction stir welding method based on photogrammetry | |
| CN114346485B (en) | Close-packed pipe space curve laser welding track planning method under weld joint tracking | |
| CN109128504B (en) | Method for preventing and solving laser welding defects of car body top cover | |
| CN117444505A (en) | Welding tool for stainless steel heat insulation assembly and manufacturing method | |
| CN113664431A (en) | Steel structural part welding arm capable of adjusting posture in real time and adjusting method | |
| JPH1094874A (en) | Automatic welding method for tube joint | |
| CN114309930B (en) | Symmetrical double-station spray pipe laser welding equipment | |
| CN207642480U (en) | A kind of weld seam scanning system being used for five axis agitating frictions welding equipment | |
| CN216398499U (en) | Automatic welding gun centering device and system applying same | |
| Bogue | Vision-assisted robotic welding | |
| CN115365695B (en) | Intelligent welding method | |
| CN117644327B (en) | Automatic welding system | |
| CN220445470U (en) | Welding state sensing system of welding device | |
| KR20190143654A (en) | MIG Welded bead inspection apparatus |
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 |