阅读说明：本技术 一种搅拌摩擦焊滚动支撑结构 (Friction stir welding rolling supporting structure ) 是由 尹立孟 苏子龙 王刚 陈玉华 徐永庚 于 2019-09-29 设计创作，主要内容包括：本发明公开一种搅拌摩擦焊滚动支撑结构,包括刚弹性筒和伸缩装置,刚弹性筒安装在伸缩装置上；伸缩装置包括安装板和伸缩气缸,伸缩气缸竖向设置,伸缩气缸的活塞杆朝上,安装板水平设置在伸缩气缸的活塞杆上端,刚弹性筒水平设置在安装板的上方；安装板上还竖向正对设有两个安装支耳,刚弹性筒水平安装在两个安装支耳之间。采用本发明的一种搅拌摩擦焊滚动支撑结构,保证刚弹性筒外壁与待焊圆筒形工件能稳定接触,刚弹性筒在滚动时不发生打滑或松动的情况,通过筒体的自适应变形,增大其与待焊圆筒形工件的接触面积,并在变形后形成刚性支撑的情况下还能稳定的滚动。(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.)

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.

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.