CN110653482A - Friction stir welding rolling supporting structure - Google Patents
Friction stir welding rolling supporting structure Download PDFInfo
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- CN110653482A CN110653482A CN201910933870.7A CN201910933870A CN110653482A CN 110653482 A CN110653482 A CN 110653482A CN 201910933870 A CN201910933870 A CN 201910933870A CN 110653482 A CN110653482 A CN 110653482A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/126—Workpiece support, i.e. backing or clamping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
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- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a friction stir welding rolling support structure, which comprises a rigid elastic cylinder and a telescopic device, wherein the rigid elastic cylinder is arranged on the telescopic device; the telescopic device comprises a mounting plate and a telescopic cylinder, the telescopic cylinder is vertically arranged, a piston rod of the telescopic cylinder faces upwards, the mounting plate is horizontally arranged at the upper end of the piston rod of the telescopic cylinder, and the rigid and elastic cylinder is horizontally arranged above the mounting plate; still vertically just being equipped with two installation lugs on the mounting panel, just an elastic cylinder horizontal installation is between two installation lugs. By adopting the friction stir welding rolling support structure, the outer wall of the rigid-elastic cylinder can be ensured to be stably contacted with the cylindrical workpiece to be welded, the rigid-elastic cylinder does not slip or loosen during rolling, the contact area between the rigid-elastic cylinder and the cylindrical workpiece to be welded is increased through the self-adaptive deformation of the cylinder, and the rigid-elastic cylinder can stably roll under the condition of forming a rigid support after deformation.
Description
Technical Field
The invention relates to a supporting structure, in particular to a friction stir welding rolling supporting structure.
Background
Friction stir welding is characterized in that a welded material is locally melted by heat generated by friction between a welding tool rotating at a high speed and a workpiece, and when the welding tool moves forwards along a welding interface, the plasticized material flows from the front part to the rear part of the welding tool under the action of the rotating friction force of the welding tool and forms a compact solid-phase welding seam under the extrusion of the welding tool. When two cylindrical workpieces to be welded are welded by friction stir welding, one ends of the two cylindrical workpieces to be welded are abutted, the two cylindrical workpieces to be welded are fixed by a clamping device, a welding tool is fixed, a welding stirring head extends into a joint from the outer side of the cylindrical workpieces to be welded, and then the two cylindrical workpieces to be welded synchronously rotate to realize welding; during welding, the rotation center of the cylindrical workpiece to be welded needs to be kept stable, and a stable support needs to be arranged on the inner side of the joint of the cylindrical workpiece to be welded so as to support the pressure of the welding stirring head on the cylindrical workpiece to be welded.
When the existing clamping device, the rotating device and the inner supporting device are applied to the friction stir welding of the cylindrical workpiece to be welded, the following technical problems exist:
1. the inner support device is provided with a rigid circular ring-shaped inner support in a more common mode, but circular ring-shaped inner supports with corresponding sizes are required to be arranged on cylindrical workpieces to be welded with different sizes, and meanwhile, in order to ensure that the outer surfaces of the circular ring-shaped inner supports are stably attached to the abutting part of the cylindrical workpieces to be welded, the requirement on the machining precision of the circular ring-shaped inner supports is high, so that the manufacturing cost of the circular ring-shaped inner supports is high;
later researchers provided an internal supporting device for circumferential weld friction stir welding in the thesis "rigid dynamic support friction stir welding process", which only supported the back of a cylindrical workpiece to be welded with a supporting wheel, ensured that the supporting force provided by the supporting wheel and the upsetting force applied by a welding machine are balanced with each other, and the supporting wheel rotated along the axis of the supporting wheel, thereby enabling the ' applicable diameter range to be wide ', needing no special tooling for manufacturing according to different product diameters like the traditional welding process, and having strong applicability to the state of parts '. However, the scheme also has the problems that the contact area between the supporting wheel and the cylindrical workpiece to be welded is too small, the supporting wheel and the cylindrical workpiece to be welded slip or loosen and the like, so that the stability of the cylindrical workpiece to be welded in contact with the welding stirring head is difficult to ensure in the rotating process of the cylindrical workpiece to be welded along the direction of a welding seam.
2. The clamping device and the rotating device are independently arranged, the size of the clamping device and the size of the rotating device are large, and the synchronism is poor.
3. When the cylindrical workpiece to be welded rotates, the axis of the cylindrical workpiece to be welded may deviate, but cannot be found in time, so that the contact relationship between the cylindrical workpiece to be welded and the stirring head is influenced.
Disclosure of Invention
In order to solve the technical problem that the stability of the cylindrical workpiece to be welded is difficult to ensure when the cylindrical workpiece is contacted with a welding stirring head, the invention provides a rolling type inner support structure which has the advantages of simple structure and strong stability.
The technical scheme is as follows:
the utility model provides a friction stir welding rolls bearing structure which the key lies in: the device comprises a rigid elastic cylinder and a telescopic device, wherein the rigid elastic cylinder is arranged on the telescopic device;
the telescopic device comprises a mounting plate and a telescopic cylinder, the telescopic cylinder is vertically arranged, a piston rod of the telescopic cylinder faces upwards, the mounting plate is horizontally arranged at the upper end of the piston rod of the telescopic cylinder, and the rigid elastic cylinder is horizontally arranged above the mounting plate;
still vertically just being equipped with two installation lugs on the mounting panel, just resilient cylinder horizontal installation is two between the installation lug.
The technical scheme has the remarkable effects that: the friction stir welding rolling support structure is arranged inside a round workpiece to be welded, the distance between a rigid elastic cylinder and the round workpiece to be welded is adjusted through a telescopic cylinder, so that the rigid elastic cylinder is tightly attached to the round workpiece to be welded, and the rolling stability of the rigid elastic cylinder is ensured in the process that the rigid elastic cylinder deforms and rolls; and the rigid elastic cylinder can be adaptively changed along with the round workpiece to be welded in the process of abutting against the round workpiece to be welded, so that the supporting area of the round workpiece to be welded is increased, and meanwhile, when the outside pressure is not enough to enable the rigid elastic cylinder to continuously deform, the rigid elastic cylinder forms rigid support, so that a stable supporting surface is provided.
The friction stir welding rolling support structure further comprises a fixed mounting arm, the fixed mounting arm is horizontally arranged, and a cylinder barrel of the telescopic cylinder is fixedly arranged on the fixed mounting arm;
the utility model discloses a telescopic cylinder, including fixed mounting arm, telescopic cylinder, mounting hole, guide bar and two, the vertical mounting hole that runs through has been gone up to fixed mounting arm, telescopic cylinder is close to the cylinder of its piston rod one end vertical the fixing in the mounting hole, it has two guide holes, two to go back vertical the running through on the fixed mounting arm the guide hole is located respectively the both sides of mounting hole, the lower surface of mounting panel is vertical two guide bars that are equipped with still, two the guide bar is located respectively telescopic cylinder's piston rod both sides, two the upper end of guide bar with the lower fixed surface of mounting panel is connected, two guide bar and two the guide hole one-to-one, the guide bar activity is.
One of the mounting lugs is vertically fixed on the upper surface of the mounting plate, and the other mounting lug is vertically fixed on the side surface of the mounting plate through a bolt.
The rigid-elastic barrel comprises a barrel body, a fixing shaft and a plurality of elastic bent plates, wherein two ends of the barrel body are provided with openings, the fixing shaft penetrates through the barrel body, and the axis line of the fixing shaft is superposed with the axis line of the barrel body;
the elastic curved plates are positioned in the cylinder body, all the elastic curved plates are arranged on the fixed shaft, all the elastic curved plates are annularly distributed by taking the fixed shaft as a center, and the elastic curved plates are arranged by taking the fixed shaft as a center and are outwards diverged;
the outer edge of the elastic bent plate is fixedly connected with the inner wall of the cylinder body, and the inner edge of the elastic bent plate is fixedly connected with the fixed shaft.
The barrel body comprises a first metal barrel, a first rubber barrel and a composite barrel which are sequentially arranged from inside to outside, wherein the outer wall of the first metal barrel is attached to the inner wall of the first rubber barrel, and the outer wall of the first rubber barrel is attached to the inner wall of the composite barrel;
the inner wall of the first metal cylinder is fixedly connected with the outer edge of the elastic curved plate.
The composite cylinder comprises a second metal cylinder and two second rubber cylinders, the two second rubber cylinders are respectively arranged at two ends of the second metal cylinder, and the second metal cylinder is communicated with the two second rubber cylinders;
the second metal cylinder and the two second rubber cylinders are fixedly sleeved on the first rubber cylinder, the inner wall of the second metal cylinder is attached to the outer wall of the first rubber cylinder, the inner wall of the second rubber cylinder is attached to the outer wall of the first rubber cylinder, and the second rubber cylinders are close to the two ends of the first rubber cylinder respectively.
The advantage of adopting above technical scheme is that, the second rubber cylinder can effectual increase just elastic cylinder and wait to weld the frictional force between the cylindrical work piece, has avoided the barrel to take place the phenomenon of skidding when rolling.
The outer wall parallel and level of second metal cylinder and two the second rubber section of thick bamboo, first metal cylinder first rubber section of thick bamboo with the both ends edge parallel and level of compound section of thick bamboo.
The elastic curved plate comprises a strip-shaped inner wall plate, an elastic plate and a strip-shaped outer wall plate;
the length direction of the strip-shaped inner wall plate is parallel to the axial lead of the fixed shaft, the width direction of the strip-shaped inner wall plate is arranged along the diameter direction of the fixed shaft, and the inner side edge of the strip-shaped inner wall plate is fixed on the outer wall of the fixed shaft;
the length direction of the strip-shaped outer wall plate is parallel to the axial lead of the cylinder body, the width direction of the strip-shaped outer wall plate is arranged along the diameter direction of the cylinder body, and the outer side edge of the strip-shaped outer wall plate is fixed on the inner wall of the first metal cylinder;
the strip-shaped inner wall plate and the strip-shaped outer wall plate are located in the same diameter direction, the elastic plate is connected between the strip-shaped inner wall plate and the strip-shaped outer wall plate, the section of the elastic plate is S-shaped, one linear side edge of the elastic plate is connected with the outer side edge of the strip-shaped inner wall plate, and the other linear side edge of the elastic plate is connected with the inner side edge of the strip-shaped outer wall plate;
the elastic bent plate, the first metal cylinder and the second metal cylinder are all made of steel belts.
The elastic bent plate has the advantages that the elastic bent plate can keep better elasticity in the extrusion deformation and reset processes.
Two ends of the fixed shaft respectively extend out of two ends of the cylinder body horizontally;
pressure-bearing holes horizontally penetrate through the two mounting lugs respectively, two ends of the fixing shaft correspond to the two pressure-bearing holes one by one, and two ends of the fixing shaft are mounted in the corresponding pressure-bearing holes through bearings respectively.
Has the advantages that: by adopting the friction stir welding rolling support structure, the outer wall of the rigid-elastic cylinder can be ensured to be stably contacted with a cylindrical workpiece to be welded, the rigid-elastic cylinder does not slip or loosen during rolling, the contact area between the rigid-elastic cylinder and the cylindrical workpiece to be welded is increased through the self-adaptive deformation of the cylinder, and the rigid-elastic cylinder can stably roll under the condition of forming rigid support after deformation.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic view of the rigid-elastic tube 9 of fig. 1 after being compressed;
FIG. 4 is a left side view of FIG. 3;
FIG. 5 is a schematic structural view of example 2;
FIG. 6 is a top view of FIG. 5;
FIG. 7 is a cross-sectional view B-B of FIG. 5;
FIG. 8 is a schematic view of a clamping and rotating mechanism;
FIG. 9 is a cross-sectional view A-A of FIG. 8;
FIG. 10 is a schematic view of the rolled inner support device;
FIG. 11 is a left side view of FIG. 10;
fig. 12 is a schematic view of the rigid elastic tube 9 of fig. 10 after being compressed;
FIG. 13 is a left side view of FIG. 12;
fig. 14 is a schematic structural view of the rigid elastic tube 9;
FIG. 15 is a partial enlarged view X of FIG. 14;
fig. 16 is a schematic view of the rigid elastic tube 9 after being squeezed;
fig. 17 is a partial enlarged view Y of fig. 16;
fig. 18 is a front view of fig. 14.
Detailed Description
The invention is further illustrated by the following examples and figures.
Example 1:
as shown in fig. 1 to 4, a friction stir welding rolling support structure comprises a rigid elastic cylinder 9, a telescopic device and a fixed mounting arm 8, wherein the rigid elastic cylinder 9 is mounted on the telescopic device, the fixed mounting arm 8 is horizontally arranged, and the telescopic device is fixed on the fixed mounting arm 8;
the telescopic device comprises a mounting plate 11 and a telescopic cylinder 12, the telescopic cylinder 12 is vertically arranged, a piston rod of the telescopic cylinder 12 faces upwards, a cylinder barrel of the telescopic cylinder 12 is fixedly arranged on the fixed mounting arm 8, the mounting plate 11 is horizontally arranged at the upper end of the piston rod of the telescopic cylinder 12, and the rigid elastic cylinder 9 is horizontally arranged above the mounting plate 11;
still vertically just being equipped with two installation lugs 13 on the mounting panel 11, just elastic cylinder 9 horizontal installation is two between the installation lug 13.
Specifically, the method comprises the following steps:
the utility model discloses a telescopic cylinder, including fixed mounting arm 8, telescopic cylinder 12, mounting panel 11, guide bar 14, two, the fixed mounting arm 8 is last vertically to run through to have a mounting hole, telescopic cylinder 12 is close to the cylinder vertical fixing of its piston rod one end in the mounting hole, it has two guiding holes, two to go back vertically to run through on the fixed mounting arm 8 the guiding hole is located respectively the both sides of the piston rod of telescopic cylinder 12, two the upper end of guide bar 14 with the lower fixed surface of mounting panel 11 is connected, two guide bar 14 and two the guiding hole one-to-one, the activity of guide bar 14 is worn to establish and is corresponded in the guiding hole.
One of the mounting lugs 13 is vertically fixed to the upper surface of the mounting plate 11, and the other of the mounting lugs 13 is vertically fixed to the side surface of the mounting plate 11 through a bolt.
The rigid elastic cylinder 9 comprises a cylinder body, a fixed shaft 2 and a plurality of elastic bent plates 3, two ends of the cylinder body are provided with openings, the fixed shaft 2 penetrates through the cylinder body, and the axis line of the fixed shaft 2 is superposed with that of the cylinder body;
the elastic curved plates 3 are positioned in the cylinder body, all the elastic curved plates 3 are arranged on the fixed shaft 2, all the elastic curved plates 3 are distributed annularly by taking the fixed shaft 2 as a center, the elastic curved plates 3 are arranged by taking the fixed shaft 2 as a center and are outwards dispersed, and two ends of the fixed shaft 2 horizontally extend out of two ends of the cylinder body respectively;
the outer edge of the elastic bent plate 3 is fixedly connected with the inner wall of the barrel, the inner edge of the elastic bent plate 3 is fixedly connected with the fixed shaft 2, two mounting lugs 13 are respectively and horizontally penetrated with pressure bearing holes, two ends of the fixed shaft 2 correspond to the two pressure bearing holes one by one, and two ends of the fixed shaft 2 are respectively mounted in the corresponding pressure bearing holes through bearings.
The barrel body comprises a first metal barrel 4, a first rubber barrel 5 and a composite barrel 6 which are sequentially arranged from inside to outside, wherein the outer wall of the first metal barrel 4 is attached and fixed with the inner wall of the first rubber barrel 5, and the outer wall of the first rubber barrel 5 is attached and fixed with the inner wall of the composite barrel 6;
the inner wall of the first metal cylinder 4 is fixedly connected with the outer edge of the elastic curved plate 3.
The composite cylinder 6 comprises a second metal cylinder 6a and two second rubber cylinders 6b, the two second rubber cylinders 6b are respectively arranged at two ends of the second metal cylinder 6a, and the second metal cylinder 6a is communicated with the two second rubber cylinders 6 b;
The outer walls of the second metal cylinder 6a and the two second rubber cylinders 6b are flush, and the edges of the two ends of the first metal cylinder 4, the first rubber cylinder 5 and the composite cylinder 6 are flush.
The elastic curved plate 3 comprises a strip-shaped inner wall plate 3a, an elastic plate 3b and a strip-shaped outer wall plate 3 c;
the length direction of the strip-shaped inner wall plate 3a is parallel to the axial lead of the fixed shaft 2, the width direction of the strip-shaped inner wall plate 3a is arranged along the diameter direction of the fixed shaft 2, and the inner side edge of the strip-shaped inner wall plate 3a is fixed on the outer wall of the fixed shaft 2;
the length direction of the strip-shaped outer wall plate 3c is parallel to the axial lead of the cylinder body, the width direction of the strip-shaped outer wall plate 3c is arranged along the diameter direction of the cylinder body, and the outer side edge of the strip-shaped outer wall plate 3c is fixed on the inner wall of the first metal cylinder 4;
the strip-shaped inner wall plate 3a and the strip-shaped outer wall plate 3c are positioned in the same diameter direction, the elastic plate 3b is connected between the strip-shaped inner wall plate 3a and the strip-shaped outer wall plate 3c, the section of the elastic plate 3b is S-shaped, one linear side edge of the elastic plate 3b is connected with the outer side edge of the strip-shaped inner wall plate 3a, and the other linear side edge of the elastic plate 3b is connected with the inner side edge of the strip-shaped outer wall plate 3 c;
the elastic curved plate 3, the first metal cylinder 4 and the second metal cylinder 6a are made of 1-3mm steel belts or copper foils.
Example 2:
as shown in fig. 5 to 18, a friction stir welding system for cylindrical workpieces comprises a workbench, wherein an inner supporting device, a welding tool (not shown in the figure) and two groups of clamping and rotating mechanisms are arranged on the workbench, the inner supporting device is positioned between the two groups of clamping and rotating mechanisms, and a stirring head 37 of the welding tool is positioned above the inner supporting device;
clamping and rotating mechanism includes annular mount pad 25, installation inner tube 31, mount pad 28, the outer wall of annular mount pad 25 is fixed on mount pad 28, the central line level of annular mount pad 25 sets up, mount pad 28 sliding assembly is in on the workstation, two sets of clamping and rotating mechanism's annular mount pad 25's central line coincidence, mount pad 28's slip direction with annular mount pad 25's central line is parallel.
The annular mounting seat 25 is cylindrical, the central line of the annular mounting seat 25 is horizontally arranged, the inner cavity of the annular mounting seat 25 forms a clamping area, the annular mounting seat 25 and the mounting inner cylinder 31 are concentrically arranged, the mounting inner cylinder 31 is mounted on the annular mounting seat 25 through a connecting bearing 26, and the outer wall of the mounting inner cylinder 31 is tightly abutted to the inner ring of the connecting bearing 26;
the mounting base 28 is provided with a driving device, the driving device comprises a speed reduction motor 29, a shell of the speed reduction motor 29 is fixedly mounted on the mounting base 28, an inner gear ring 30 is arranged in the connecting bearing 26, the outer edge of the inner gear ring 30 is tightly abutted against the inner wall of the connecting bearing 26, the center line of the inner gear ring 30 is superposed with the center line of the mounting inner cylinder 31, the output shaft of the speed reduction motor 29 extends into the inner ring of the inner gear ring 30, the output shaft of the speed reduction motor 29 is provided with a driving gear, and the driving gear is meshed with the inner gear ring 30.
The inner gear ring 30 is communicated with the mounting inner cylinder 31, a plurality of connecting rods 32 are inserted in the inner gear ring 30, all the connecting rods 32 are parallel to the center line of the inner gear ring 30, all the connecting rods 32 are uniformly arranged around the center line of the inner gear ring 30, all the connecting rods 32 penetrate through the inner gear ring 30 and then extend into the cylinder wall of the mounting inner cylinder 31, and the inner gear ring 30 and the mounting inner cylinder 31 are fixedly connected into a whole through the connecting rods 32.
Still be equipped with at least three die clamping cylinder 27 in the installation inner tube 31, all die clamping cylinder 27 evenly sets up on the inner wall of installation inner tube 31, all die clamping cylinder 27 centers on the central line evenly distributed of installation inner tube 31, all die clamping cylinder 27's piston rod all faces the central line of installation inner tube 31, be equipped with the arc slips on die clamping cylinder 27's the output.
The annular mounting seats 25 of the two groups of clamping and rotating mechanisms are respectively provided with a detection device body, and the detection device bodies are arranged around the central line of the annular mounting seats 25;
the detection device body comprises a sliding part and a detection part, the sliding part is movably inserted into the cylinder wall of the annular mounting seat 25 in a penetrating mode, the sliding direction of the sliding part is parallel to the central line of the annular mounting seat 25, the detection part is fixedly mounted on the sliding part, the detection part is located on the outer side of the corresponding clamping rotating mechanism, and an alignment mark is arranged on the detection part. Specifically, the method comprises the following steps: the sliding portion comprises three sliding support rods 35, three sliding holes penetrate through the wall of the annular mounting seat 25, all the sliding holes are uniformly distributed around the center line of the annular mounting seat 25, the hole center line directions of all the sliding holes are parallel to the center line of the annular mounting seat 25, the three sliding support rods 35 correspond to the three sliding holes one by one, the sliding support rods 35 are movably arranged in the corresponding sliding holes in a penetrating mode, and two ends of each sliding support rod 35 extend out of the corresponding sliding holes respectively.
The detection portion includes three detection branch 36, and is three detection branch 36 follows respectively annular mount pad 25's radial setting, it is three detection branch 36 with annular mount pad 25's central line hoop distributes, and is three inner interconnect of detection branch 36, it is three the tie point of detection branch 36 is located on annular mount pad 25's the central line, it is three detection branch 36 is located annular mount pad 25 is same one side, three detection branch 36 and three sliding branch 35 one-to-one, it is three the outer end of detection branch 36 and the three that corresponds sliding branch 35 fixed connection, sliding branch 35's free end is equipped with the stopping plush copper respectively, and is three be equipped with the scale mark respectively along respective length direction on the detection branch 36, in order to form the alignment mark.
The workbench is further provided with an inner support mounting seat in a sliding mode, the sliding direction of the inner support mounting seat is consistent with that of the mounting base 28, the inner support mounting seat is located on the outer side of any one of the clamping and rotating mechanisms, a fixed mounting arm 8 is horizontally and fixedly mounted on the inner support mounting seat, the length direction of the fixed mounting arm 8 is parallel to the central line of the annular mounting seat 25, one end of the fixed mounting arm 8 is fixed on the inner support mounting seat, the other end of the fixed mounting arm 8 penetrates through the mounting inner cylinder 31, close to the fixed mounting arm, of the clamping and rotating mechanism, the fixed mounting arm 8 is eccentrically arranged relative to the central line of the mounting inner cylinder 31 to avoid the detection supporting rod 36, and the inner support device is fixedly arranged at the free end of the fixed mounting arm 8.
The above-mentioned internal support means can be implemented in two specific ways:
in a first specific implementation mode, the internal support device is a rolling support structure shown in embodiment 1, the moving support structure includes a rigid elastic cylinder 9 and a telescopic device, the rigid elastic cylinder 9 is mounted on the telescopic device, and the telescopic device is vertically mounted on the fixed mounting arm 8;
the telescopic device comprises a mounting plate 11 and a telescopic cylinder 12, the telescopic cylinder 12 is vertically arranged, a piston rod of the telescopic cylinder 12 faces upwards, the mounting plate 11 is horizontally arranged at the upper end of the piston rod of the telescopic cylinder 12, and the rigid elastic cylinder 9 is horizontally arranged above the mounting plate 11;
still vertically just being equipped with two installation lugs 13 on the mounting panel 11, just elastic cylinder 9 horizontal installation is two between the installation lug 13.
The fixed setting of telescopic cylinder 12's cylinder is in on the fixed mounting arm 8, the vertical mounting hole that has run through on the fixed mounting arm 8, telescopic cylinder 12 is close to the vertical fixing of cylinder of its piston rod one end in the mounting hole, still vertical the running through of fixed mounting arm 8 has two guiding holes, two the guiding hole is located respectively the both sides of mounting hole, the lower surface of mounting panel 11 is still vertical to be equipped with two guide bars 14, two guide bar 14 is located respectively telescopic cylinder 12's piston rod both sides, two the upper end of guide bar 14 with the lower fixed surface of mounting panel 11 is connected, two guide bar 14 and two the guiding hole one-to-one, the guide bar 14 activity is worn to establish in the correspondence in the guiding hole.
One of the mounting lugs 13 is vertically fixed to the upper surface of the mounting plate 11, and the other of the mounting lugs 13 is vertically fixed to the side surface of the mounting plate 11 through a bolt.
The rigid elastic cylinder 9 comprises a cylinder body, a fixed shaft 2 and a plurality of elastic bent plates 3, two ends of the cylinder body are open, the fixed shaft 2 penetrates through the cylinder body, the axis line of the fixed shaft 2 coincides with the axis line of the cylinder body, and two ends of the fixed shaft 2 horizontally extend out of two ends of the cylinder body respectively; the elastic curved plates 3 are positioned in the cylinder body, all the elastic curved plates 3 are arranged on the fixed shaft 2, all the elastic curved plates 3 are distributed annularly by taking the fixed shaft 2 as a center, and the elastic curved plates 3 are arranged by taking the fixed shaft 2 as a center and are outwards diverged;
the outer edge of the elastic curved plate 3 is fixedly connected with the inner wall of the cylinder, and the inner edge of the elastic curved plate 3 is fixedly connected with the fixed shaft 2.
The barrel comprises a first metal barrel 4, a first rubber barrel 5 and a composite barrel 6 which are sequentially arranged from inside to outside, wherein the outer wall of the first metal barrel 4 is attached to the inner wall of the first rubber barrel 5, and the outer wall of the first rubber barrel 5 is attached to the inner wall of the composite barrel 6; the inner wall of the first metal cylinder 4 is fixedly connected with the outer edge of the elastic curved plate 3.
The composite cylinder 6 comprises a second metal cylinder 6a and two second rubber cylinders 6b, the two second rubber cylinders 6b are respectively arranged at two ends of the second metal cylinder 6a, and the second metal cylinder 6a is communicated with the two second rubber cylinders 6 b; the second metal cylinder 6a and the two second rubber cylinders 6b are fixedly sleeved on the first rubber cylinder 5, the inner wall of the second metal cylinder 6a is attached to the outer wall of the first rubber cylinder 5, the inner walls of the two second rubber cylinders 6b are attached to the outer wall of the first rubber cylinder 5, and the two second rubber cylinders 6b are respectively close to two ends of the first rubber cylinder 5; the outer walls of the second metal cylinder 6a and the two second rubber cylinders 6b are flush, and the edges of the two ends of the first metal cylinder 4, the first rubber cylinder 5 and the composite cylinder 6 are flush.
The elastic curved plate 3 comprises a strip-shaped inner wall plate 3a, an elastic plate 3b and a strip-shaped outer wall plate 3 c; the length direction of the strip-shaped inner wall plate 3a is parallel to the axial lead of the fixed shaft 2, the width direction of the strip-shaped inner wall plate 3a is arranged along the diameter direction of the fixed shaft 2, and the inner side edge of the strip-shaped inner wall plate 3a is fixed on the outer wall of the fixed shaft 2;
the length direction of the strip-shaped outer wall plate 3c is parallel to the axial lead of the cylinder body, the width direction of the strip-shaped outer wall plate 3c is arranged along the diameter direction of the cylinder body, and the outer side edge of the strip-shaped outer wall plate 3c is fixed on the inner wall of the first metal cylinder 4;
the strip-shaped inner wall plate 3a and the strip-shaped outer wall plate 3c are positioned in the same diameter direction, the elastic plate 3b is connected between the strip-shaped inner wall plate 3a and the strip-shaped outer wall plate 3c, the section of the elastic plate 3b is S-shaped, one linear side edge of the elastic plate 3b is connected with the outer side edge of the strip-shaped inner wall plate 3a, and the other linear side edge of the elastic plate 3b is connected with the inner side edge of the strip-shaped outer wall plate 3 c;
the elastic curved plate 3, the first metal cylinder 4 and the second metal cylinder 6a are made of 1-3mm steel belts or copper foils.
Pressure-bearing holes horizontally penetrate through the two mounting support lugs 13 respectively, two ends of the fixing shaft 2 correspond to the two pressure-bearing holes one by one, two ends of the fixing shaft 2 are mounted in the corresponding pressure-bearing holes through bearings respectively, and the axis of the cylinder is parallel to the central line of the mounting inner cylinder 31.
In a second specific embodiment, the internal support device is a rolling internal support system, the rolling internal support system comprises a rigid elastic cylinder 9, a telescopic cylinder 12 and a limiting device, the rigid elastic cylinder 9 is mounted on the limiting device, and the limiting device is mounted on a piston rod of the telescopic cylinder 12;
stop device includes mounting panel 11 and two spacing roller sets, mounting panel 11 level sets up telescopic cylinder 12's piston rod upper end, two spacing roller set is just to installing mounting panel 11's upper surface, just elastic cylinder 9 is located two between the spacing roller set.
The limiting roller set comprises an extrusion limiting roller 18 and two mounting seats 19, the two mounting seats 19 are fixedly arranged on the upper surface of the mounting plate 11, the extrusion limiting roller 18 is horizontally arranged between the two mounting seats 19 of the same roller set, and roller shafts at two ends of the extrusion limiting roller 18 are respectively mounted on the two corresponding mounting seats 19 through bearings;
the two extrusion limit rollers 18 are parallel to each other, the distance between the two extrusion limit rollers 18 is smaller than the diameter of the rigid elastic tube 9, the rigid elastic tube 9 falls on the two extrusion limit rollers 18, and the axis line of the rigid elastic tube 9 is parallel to the extrusion limit rollers 18.
All still be equipped with fixed roller 20 on the mount pad 19, the vertical setting of fixed roller 20 is in on the mount pad 19, vertical movable sleeve is equipped with prevents spacing roller 21 partially on the fixed roller 20, stretch out the upper end of fixed roller 20 prevent the upper end of spacing roller 21 partially, the upper end of fixed roller 20 is equipped with the screw thread, the upper end of fixed roller 20 is equipped with the anticreep nut, the anticreep nut with fixed roller 20 threaded connection.
The rigid elastic cylinder 9 comprises a cylinder body, a fixed shaft 2 and a plurality of elastic bent plates 3, two ends of the cylinder body are provided with openings, the fixed shaft 2 penetrates through the cylinder body, and the axis line of the fixed shaft 2 is superposed with that of the cylinder body;
the elastic curved plates 3 are positioned in the cylinder body, all the elastic curved plates 3 are arranged on the fixed shaft 2, all the elastic curved plates 3 are distributed annularly by taking the fixed shaft 2 as a center, and the elastic curved plates 3 are arranged by taking the fixed shaft 2 as a center and are outwards diverged; the outer edge of the elastic curved plate 3 is fixedly connected with the inner wall of the cylinder, and the inner edge of the elastic curved plate 3 is fixedly connected with the fixed shaft 2.
Two limiting slide bars 15 are also vertically arranged on the mounting plate 11, the two limiting slide bars 15 are arranged oppositely, the two limiting slide bars 15 are respectively close to two ends of the fixed shaft 2, and limiting adapter seats 16 are respectively arranged on the two limiting slide bars 15;
the limiting adapter 16 comprises a guide sleeve 16a and a bearing seat 16b, the bearing seat 16b is fixedly installed on the guide sleeve 16a, the guide sleeve 16a is movably sleeved on the limiting slide rod 15, two ends of the fixing shaft 2 horizontally extend out of two ends of the cylinder body respectively, and two ends of the fixing shaft 2 are installed on the corresponding bearing seats 16b through bearings respectively.
The barrel comprises a first metal barrel 4, a first rubber barrel 5 and a composite barrel 6 which are sequentially arranged from inside to outside, wherein the outer wall of the first metal barrel 4 is attached to the inner wall of the first rubber barrel 5, and the outer wall of the first rubber barrel 5 is attached to the inner wall of the composite barrel 6; the inner wall of the first metal cylinder 4 is fixedly connected with the outer edge of the elastic curved plate 3.
The composite cylinder 6 comprises a second metal cylinder 6a and two second rubber cylinders 6b, the two second rubber cylinders 6b are respectively arranged at two ends of the second metal cylinder 6a, and the second metal cylinder 6a is communicated with the two second rubber cylinders 6 b; the second metal cylinder 6a and the two second rubber cylinders 6b are fixedly sleeved on the first rubber cylinder 5, the inner wall of the second metal cylinder 6a is attached to the outer wall of the first rubber cylinder 5, the inner walls of the two second rubber cylinders 6b are attached to the outer wall of the first rubber cylinder 5, and the two second rubber cylinders 6b are respectively close to two ends of the first rubber cylinder 5; the outer walls of the second metal cylinder 6a and the two second rubber cylinders 6b are flush, and the edges of the two ends of the first metal cylinder 4, the first rubber cylinder 5 and the composite cylinder 6 are flush.
The elastic curved plate 3 comprises a strip-shaped inner wall plate 3a, an elastic plate 3b and a strip-shaped outer wall plate 3 c;
the length direction of the strip-shaped inner wall plate 3a is parallel to the axial lead of the fixed shaft 2, the width direction of the strip-shaped inner wall plate 3a is arranged along the diameter direction of the fixed shaft 2, and the inner side edge of the strip-shaped inner wall plate 3a is fixed on the outer wall of the fixed shaft 2;
the length direction of the strip-shaped outer wall plate 3c is parallel to the axial lead of the cylinder body, the width direction of the strip-shaped outer wall plate 3c is arranged along the diameter direction of the cylinder body, and the outer side edge of the strip-shaped outer wall plate 3c is fixed on the inner wall of the first metal cylinder 4;
the strip-shaped inner wall plate 3a and the strip-shaped outer wall plate 3c are positioned in the same diameter direction, the elastic plate 3b is connected between the strip-shaped inner wall plate 3a and the strip-shaped outer wall plate 3c, the section of the elastic plate 3b is S-shaped, one linear side edge of the elastic plate 3b is connected with the outer side edge of the strip-shaped inner wall plate 3a, and the other linear side edge of the elastic plate 3b is connected with the inner side edge of the strip-shaped outer wall plate 3 c;
the elastic curved plate 3, the first metal cylinder 4 and the second metal cylinder 6a are made of 1-3mm steel belts or copper foils, and the axial line of the cylinder body is parallel to the central line of the installation inner cylinder 31.
When in use: the method comprises the steps of clamping two cylindrical workpieces to be welded through two groups of clamping rotating mechanisms respectively, specifically, enabling an inner support mounting seat and the two groups of clamping rotating mechanisms to slide outwards on a workbench to be away from each other, reserving a placing space, then placing the cylindrical workpieces to be welded into corresponding clamping areas, enabling the central line of the cylindrical workpieces to be welded to be superposed with the central line of an inner mounting cylinder 31, then sliding the two groups of clamping rotating mechanisms inwards to proper positions and locking, abutting one ends of the two cylindrical workpieces to be welded to be tightly abutted, enabling a clamping cylinder 27 to synchronously extend out from the outer side to clamp and fix the corresponding cylindrical workpieces to be welded, and enabling the center of the cylindrical workpieces to be welded to be located at the rotating center of the clamping rotating mechanisms to be rapidly detected through a detection device body and timely correcting. Sliding the inner support mounting seat to enable the inner support device to enter the cylindrical workpiece to be welded, locking the inner support mounting seat when the inner support device enters the joint of the cylindrical workpiece to be welded, and then extending out a piston rod of the telescopic cylinder 12 to enable the outer wall of the rigid and elastic cylinder 9 to be tightly pressed with the inner walls of the two cylindrical workpieces to be welded; just after the elastic cylinder 9 is deformed, the part of the elastic cylinder, which is contacted with the inner wall of the cylindrical workpiece to be welded, is deformed in a self-adaptive manner, so that the supporting area can be increased; the rigid elastic cylinder 9 has stronger elastic recovery potential energy after being deformed, and when the outside pressure is not enough to enable the rigid elastic cylinder 9 to continue to deform, the rigid elastic cylinder 9 forms rigid support, so that a stable support surface is provided; the stirring head 37 of the welding tool extends into the joint of the cylindrical workpieces to be welded from the outer side, and finally the two cylindrical workpieces to be welded rotate synchronously to realize the stirring friction welding of the circumferential welding seam.
The technical key points of the scheme are that the inner supporting device, the detection device and the rotary clamping device are only arranged, and the welding tool for friction stir welding is the prior art and is not described in detail herein. However, how to solve the problems of how to slidably assemble and lock the mounting base 28 and the inner support mounting seat, how to solve the problems of synchronous clamping of the three clamping cylinders 27, synchronous rotation of the two groups of rotary clamping devices and the like are well documented in the prior art, and are not the main points of the present application, and therefore, detailed discussion thereof is not needed.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (9)
1. The utility model provides a friction stir welding rolls bearing structure which characterized in that: the device comprises a rigid elastic cylinder (9) and a telescopic device, wherein the rigid elastic cylinder (9) is arranged on the telescopic device;
the telescopic device comprises a mounting plate (11) and a telescopic cylinder (12), the telescopic cylinder (12) is vertically arranged, a piston rod of the telescopic cylinder (12) faces upwards, the mounting plate (11) is horizontally arranged at the upper end of the piston rod of the telescopic cylinder (12), and the rigid elastic cylinder (9) is horizontally arranged above the mounting plate (11);
still vertically just being equipped with two installation journal stirrup (13) on mounting panel (11), just elastic cylinder (9) horizontal installation is two between installation journal stirrup (13).
2. The friction stir welding rolling support structure of claim 1, wherein: the telescopic air cylinder is characterized by further comprising a fixed mounting arm (8), wherein the fixed mounting arm (8) is horizontally arranged, and a cylinder barrel of the telescopic air cylinder (12) is fixedly arranged on the fixed mounting arm (8);
the utility model discloses a telescopic cylinder, including fixed mounting arm (8), telescopic cylinder (12), guide bar (14), two, the piston rod both sides of telescopic cylinder (12) are located respectively, the lower surface of mounting panel (11) still vertically is equipped with two guide bars (14), two guide bar (14) are located respectively the piston rod both sides of telescopic cylinder (12), two the upper end of guide bar (14) with the lower fixed surface of mounting panel (11) is connected, two guide bar (14) and two the guide hole one-to-one, guide bar (14) activity is worn to establish in the correspondence in the guide hole.
3. A friction stir welding rolling support structure according to claim 2 wherein: one the installation support lug (13) is vertically fixed on the upper surface of the installation plate (11), and the other installation support lug (13) is vertically fixed on the side surface of the installation plate (11) through a bolt.
4. A friction stir welding rolling support structure according to claim 2 wherein: the rigid elastic cylinder (9) comprises a cylinder body, a fixed shaft (2) and a plurality of elastic bent plates (3), two ends of the cylinder body are opened, the fixed shaft (2) penetrates through the cylinder body, and the axis line of the fixed shaft (2) is superposed with that of the cylinder body;
the elastic curved plates (3) are positioned in the cylinder body, all the elastic curved plates (3) are arranged on the fixed shaft (2), all the elastic curved plates (3) are annularly distributed by taking the fixed shaft (2) as a center, and the elastic curved plates (3) are outwards diverged by taking the fixed shaft (2) as a center;
the outer edge of the elastic curved plate (3) is fixedly connected with the inner wall of the cylinder body, and the inner edge of the elastic curved plate (3) is fixedly connected with the fixed shaft (2).
5. The friction stir welding rolling support structure of claim 4, wherein: the barrel comprises a first metal barrel (4), a first rubber barrel (5) and a composite barrel (6) which are sequentially arranged from inside to outside, wherein the outer wall of the first metal barrel (4) is attached to the inner wall of the first rubber barrel (5), and the outer wall of the first rubber barrel (5) is attached to the inner wall of the composite barrel (6);
the inner wall of the first metal cylinder (4) is fixedly connected with the outer edge of the elastic curved plate (3).
6. The friction stir welding rolling support structure of claim 5, wherein: the composite cylinder (6) comprises a second metal cylinder (6a) and two second rubber cylinders (6b), the two second rubber cylinders (6b) are respectively arranged at two ends of the second metal cylinder (6a), and the second metal cylinder (6a) is communicated with the two second rubber cylinders (6 b);
the second metal cylinder (6a) and the two second rubber cylinders (6b) are all fixedly sleeved on the first rubber cylinder (5), the inner wall of the second metal cylinder (6a) is attached to the outer wall of the first rubber cylinder (5), and the inner wall of the second rubber cylinder (6b) is attached to the outer wall of the first rubber cylinder (5) and is close to the two ends of the first rubber cylinder (5) respectively.
7. The friction stir welding rolling support structure of claim 6, wherein: the outer wall of the second metal cylinder (6a) is flush with the outer wall of the second rubber cylinders (6b), and the edges of the two ends of the first metal cylinder (4), the first rubber cylinder (5) and the composite cylinder (6) are flush with each other.
8. The friction stir welding rolling support structure of claim 6, wherein: the elastic curved plate (3) comprises a strip-shaped inner wall plate (3a), an elastic plate (3b) and a strip-shaped outer wall plate (3 c);
the length direction of the strip-shaped inner wall plate (3a) is parallel to the axial lead of the fixed shaft (2), the width direction of the strip-shaped inner wall plate (3a) is arranged along the diameter direction of the fixed shaft (2), and the inner side edge of the strip-shaped inner wall plate (3a) is fixed on the outer wall of the fixed shaft (2);
the length direction of the strip-shaped outer wall plate (3c) is parallel to the axial lead of the cylinder body, the width direction of the strip-shaped outer wall plate (3c) is arranged along the diameter direction of the cylinder body, and the outer side edge of the strip-shaped outer wall plate (3c) is fixed on the inner wall of the first metal cylinder (4);
the strip-shaped inner wall plate (3a) and the strip-shaped outer wall plate (3c) are positioned in the same diameter direction, the elastic plate (3b) is connected between the strip-shaped inner wall plate (3a) and the strip-shaped outer wall plate (3c), the section of the elastic plate (3b) is S-shaped, one linear side edge of the elastic plate (3b) is connected with the outer side edge of the strip-shaped inner wall plate (3a), and the other linear side edge of the elastic plate (3b) is connected with the inner side edge of the strip-shaped outer wall plate (3 c);
the elastic bent plate (3), the first metal cylinder (4) and the second metal cylinder (6a) are all made of steel strips.
9. The friction stir welding rolling support structure of claim 4, wherein: two ends of the fixed shaft (2) horizontally extend out of two ends of the cylinder body respectively;
pressure-bearing holes horizontally penetrate through the two mounting support lugs (13), two ends of the fixed shaft (2) correspond to the two pressure-bearing holes one to one, and two ends of the fixed shaft (2) are mounted in the corresponding pressure-bearing holes through bearings respectively.
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| CN201910933870.7A CN110653482B (en) | 2019-09-29 | 2019-09-29 | Friction stir welding rolling supporting structure |
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| CN110653482B (en) | 2021-04-20 |
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