CN214134457U - Electromagnetic heating static shaft shoulder friction stir welding mechanism - Google Patents
Electromagnetic heating static shaft shoulder friction stir welding mechanism Download PDFInfo
- Publication number
- CN214134457U CN214134457U CN202022145129.5U CN202022145129U CN214134457U CN 214134457 U CN214134457 U CN 214134457U CN 202022145129 U CN202022145129 U CN 202022145129U CN 214134457 U CN214134457 U CN 214134457U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic heating
- shaft shoulder
- static
- friction stir
- stirring pin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The utility model discloses an electromagnetic heating static shaft shoulder friction stir welding mechanism, which comprises a static shaft shoulder, an electromagnetic heating coil and a stirring pin; the static shaft shoulder is provided with an accommodating cavity; the stirring pin penetrates through the accommodating cavity, and the lower end of the stirring pin extends out of the lower end of the static shaft shoulder; the electromagnetic heating coil is arranged in the accommodating cavity and is fixedly connected with the static shaft shoulder; the electromagnetic heating coil is wound outside the stirring pin and can heat the stirring pin after being electrified. The utility model discloses can improve the heating effect to avoid the weldment work difference of being heated too big, in order to reach the unanimous requirement of whole strip welding seam performance.
Description
Technical Field
The utility model relates to a friction stir welding equipment field especially relates to a static shaft shoulder friction stir welding mechanism of electromagnetic heating.
Background
The static shaft shoulder friction stir welding technology is an innovative development of the conventional friction stir welding technology, belongs to the solid phase welding technology, has the advantages of high quality, small heat input, small deformation and the like compared with the traditional fusion welding technology, and can effectively avoid the common defects of air holes, cracks and the like in the fusion welding, thereby realizing the high-quality welding of various metal materials. The static shaft shoulder friction stir welding technology principle is that a shaft shoulder is fixed and does not rotate, a stirring needle rotates, the stirring needle is inserted into a welding workpiece in a rotating mode, then the stirring needle moves along the direction of a welding seam of the welding workpiece, the stirring and the friction of the welding workpiece are achieved through stirring, so that the temperature of materials of the welding workpiece is raised and softened to reach a plastic state, the materials of the welding workpiece in the plastic state are driven by the high-speed rotation of the stirring needle to transfer from front to back around a stirring head, meanwhile, the static shaft shoulder performs the forging and pressing effect on welding seam metals, and the materials are in diffusion connection to form compact intermetallic solid phase connection under the combined action of heat and a machine. By adopting static shaft shoulder friction stir welding, the problems of large pressing amount, high requirement on device forging pressure, large amount of welding flash, serious joint thinning and the like of conventional friction stir welding can be effectively avoided, and appearance forming of the joint can be effectively improved. However, the heat generated by friction stir welding of the static shaft shoulder mainly depends on the friction between the stirring needle and the material, so that the heat generation is limited, the heat input required by welding of materials such as medium-thickness plate aluminum alloy, steel, titanium and the like is difficult to meet, the defects of holes and tunnels easily occur on the joint, and the mechanical property of the joint is reduced.
At present, aiming at the problems of small heat production amount and the like of static shaft shoulder friction stir welding, for example, in patent CN 200710092974.7-conductive-friction stir composite heat source welding method and equipment, current is introduced in the direction of a welding seam of a workpiece, so that the current and the contact resistance of the flowing welding seam and the friction stir welding zone generate resistance heat, thereby forming a composite heat source with the friction stir heat and realizing the welding of the conductive friction stir welding composite heat source. When the welding seam is too long, the welding seam workpiece is electrified for a long time in the welding seam direction, so that the welding seam workpiece is heated and reduced gradually under the action of resistance heat, the heat distribution of the welding seam workpiece is uneven, the requirement of consistent performance of the whole welding seam is difficult to achieve, and the current heating effect is not obvious due to current dispersion.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model discloses an aim at providing a quiet shaft shoulder friction stir welding mechanism of electromagnetic heating, it homoenergetic improves the heating effect to avoid the welding workpiece difference of being heated too big, in order to reach the unanimous requirement of whole welding seam performance.
The purpose of the utility model is realized by adopting the following technical scheme:
an electromagnetic heating static shaft shoulder friction stir welding mechanism comprises a static shaft shoulder, an electromagnetic heating coil and a stirring pin; the static shaft shoulder is provided with an accommodating cavity; the stirring pin penetrates through the accommodating cavity, and the lower end of the stirring pin extends out of the lower end of the static shaft shoulder; the electromagnetic heating coil is arranged in the accommodating cavity and is fixedly connected with the static shaft shoulder; the electromagnetic heating coil is wound outside the stirring pin, and the stirring pin can be heated after the electromagnetic heating coil is electrified.
Furthermore, the static shaft shoulder, the electromagnetic heating coil and the stirring pin are coaxially arranged.
Further, the electromagnetic heating coil is in a hollow cylindrical shape.
Further, the stationary shaft shoulder and the electromagnetic heating coil are fixed by bolts.
Furthermore, a connecting sleeve is fixed at the upper end of the static shaft shoulder, and an internal thread is formed at the upper end of the connecting sleeve.
Further, the static shaft shoulder is in threaded connection with the connecting sleeve.
Furthermore, the electromagnetic heating static shaft shoulder friction stir welding mechanism also comprises a main shaft and a tool handle; the main shaft is provided with an external thread in threaded connection with the internal thread; the cutter handle is connected with the main shaft and extends into the connecting sleeve; the stirring pin is fixedly connected with the knife handle.
Further, a heat insulation sleeve is arranged between the stirring pin and the knife handle.
Further, the stirring pin and the knife handle are connected through a bolt.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model is provided with a static shaft shoulder, an electromagnetic heating coil and a stirring pin; the stirring pin penetrates through the static shaft shoulder, and the lower end of the stirring pin extends out of the static shaft shoulder; the electromagnetic heating coil is arranged outside the heat-conducting stirring pin and can heat the stirring pin after being electrified; therefore, the stirring pin is pressed into the welding workpiece, the electromagnetic heating coil intensively heats the stirring pin in time to ensure the temperature of the stirring pin along with the movement process of the stirring pin along the welding seam, and then the stirring pin directly transfers the heat to the welding workpiece, so that the heating is centralized, and the heating effect is obvious; meanwhile, the heat directly acts on the welding workpiece along with the movement of the stirring pin, and current does not need to be introduced into the welding seam, so that the condition that the welding seam is heated unevenly due to the overlong welding seam can be avoided, and the requirement that the performance of the whole welding seam is consistent is met.
Drawings
Fig. 1 is the structural schematic diagram of the static shoulder friction stir welding mechanism of the utility model.
In the figure: 10. a stationary shaft shoulder; 11. an accommodating cavity; 20. an electromagnetic heating coil; 30. a stirring pin; 40. connecting a sleeve; 50. a main shaft; 60. a knife handle.
Detailed Description
As shown in fig. 1, the electromagnetic heating static shoulder friction stir welding mechanism comprises a static shoulder 10, an electromagnetic heating coil 20 and a heat-conducting stirring pin 30; the static shaft shoulder 10 is provided with a containing cavity 11; the heat conduction stirring pin 30 penetrates through the accommodating cavity 11, and the lower end of the stirring pin 30 extends out of the lower end of the static shaft shoulder 10; the electromagnetic heating coil 20 is arranged in the accommodating cavity 11 and is fixedly connected with the static shaft shoulder 10; the electromagnetic heating coil 20 is wound around the outer surface of the probe 30, and the probe 30 can be heated by energizing the electromagnetic heating coil 20.
On the basis of the structure, when the electromagnetic heating static shaft shoulder friction stir welding mechanism is used, the parts to be welded of the first welding workpiece and the second welding workpiece are attached to each other, the electromagnetic heating coil 20 intensively heats the stirring pin 30, the stirring pin 30 intensively heats, and after the stirring pin 30 is heated to a preset temperature, the stirring pin 30 is rotationally pressed into the first welding workpiece and the second welding workpiece; the static shaft shoulder 10 is respectively contacted with the surfaces of the first welding workpiece and the second welding workpiece, and presses the first welding workpiece and the second welding workpiece downwards on the welding seam workpiece around the stirring pin 30; at the moment, the stirring pins 30 which are heated in a centralized manner directly transfer heat to the welding workpieces, so that the heat loss is reduced, and the heating effect on the first welding workpiece and the second welding workpiece is obvious; meanwhile, the temperature of the stirring pin 30 is also increased under the friction action; then the stirring pin 30 keeps rotating and moves the stirring plate along the extending direction of the joint, the electromagnetic heating coil 20 continuously heats the stirring pin 30 to make up the heat loss of the stirring pin in the processes of transferring to the welding workpiece and moving, the uniform heat transfer of the first welding workpiece and the second welding workpiece in the moving process is effectively ensured, and the current does not need to be introduced into the welding seam, so that the condition that the welding seam is heated unevenly due to the overlong welding seam can be avoided, and the requirement that the performance of the whole welding seam is consistent is met; in this process, the stationary shoulder 10 always keeps pressing the first welding workpiece and the second welding workpiece downward, thereby realizing welding of the first welding workpiece and the second welding workpiece.
Moreover, because the heating effect is obvious, the electromagnetic heating static shaft shoulder friction stir welding mechanism can be applied to welding workpieces which need more heat, such as medium-thickness plate aluminum alloy, steel, titanium and other materials, and the like, so as to solve the problems of weld seam thinning, looseness, flash, holes, insufficient heat production and the like, wherein when the aluminum alloy is welded, the preset temperature for heating the stirring needle 30 is about 400 ℃, and the preset temperature for heating the stainless steel material is about 1500 ℃; secondly, the heating effect is obvious, the fluidity of the welding workpiece material is improved, and the welding effect is effectively improved; meanwhile, the heating effect is obvious, the time for the welding workpiece material to reach a plasticized state is shortened, the advancing resistance and the friction resistance of the welding workpiece to the stirring pin 30 during welding can be effectively reduced, the abrasion of the stirring pin 30 is greatly reduced, and the welding speed is effectively improved.
The heat conducting stirring pin 30 has a corresponding specification selected according to the size of the welding seam, and the stirring pin 30 is made of an alloy material with good heat conducting performance and small thermal expansion coefficient, so that the stirring pin 30 can better transfer heat to the lower end of the stirring pin extending out of the static shaft shoulder 10 after being heated, and can better transfer the heat to the welding workpiece.
Specifically, the stationary shoulder 10, the electromagnetic heating coil 20, and the agitating pin 30 are coaxially disposed.
Further, the electromagnetic heating coil 20 has a hollow cylindrical shape, that is, the coil is wound in a hollow cylindrical structure to form the electromagnetic heating coil 20; at this time, the stirring pins 30 are provided to penetrate through and distributed along the length direction of the stirring pins 30, so that the stirring pins 30 can be uniformly heated.
The stationary shoulder 10 and the electromagnetic heating coil 20 are fixed by bolts as described above.
Preferably, a connecting sleeve 40 is fixed on the upper end of the stationary shaft shoulder 10, and the upper end of the connecting sleeve 40 is provided with an internal thread.
The static shaft shoulder 10 is in threaded connection with the connecting sleeve 40, specifically, the upper end of the static shaft shoulder 10 is provided with an external connecting thread, and the lower end of the connecting sleeve 40 is provided with an internal connecting thread, so that the assembly and disassembly are convenient.
The electromagnetic heating static shaft shoulder friction stir welding mechanism also comprises a main shaft 50 and a tool handle 60; the main shaft 50 is provided with an external thread in threaded connection with the internal thread, so that the installation tool shank 60 of the electromagnetic heating static shoulder friction stir welding mechanism is conveniently connected with the main shaft 50 and extends into the connecting sleeve 40; the stirring pin 30 is fixedly connected with the handle 60, so that installation is realized.
Preferably, a heat insulation sleeve is arranged between the stirring pin 30 and the tool handle 60 to ensure that the heat of the stirring pin 30 can be effectively used for heating the welding workpiece; the heat insulation sleeve can be made of heat insulation materials such as asbestos and the like.
Preferably, the pin 30 and the shank 60 are connected by a bolt.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (9)
1. The utility model provides an electromagnetic heating quiet shaft shoulder friction stir welding mechanism which characterized in that: comprises a static shaft shoulder, an electromagnetic heating coil and a stirring pin; the static shaft shoulder is provided with an accommodating cavity; the stirring pin penetrates through the accommodating cavity, and the lower end of the stirring pin extends out of the lower end of the static shaft shoulder; the electromagnetic heating coil is arranged in the accommodating cavity and is fixedly connected with the static shaft shoulder; the electromagnetic heating coil is wound outside the stirring pin, and the stirring pin can be heated after the electromagnetic heating coil is electrified.
2. The electromagnetic heating static shoulder friction stir welding mechanism of claim 1, wherein: the static shaft shoulder, the electromagnetic heating coil and the stirring needle are coaxially arranged.
3. The electromagnetic heating static shoulder friction stir welding mechanism of claim 1, wherein: the electromagnetic heating coil is in a hollow cylindrical shape.
4. The electromagnetic heating static shoulder friction stir welding mechanism of claim 1, wherein: the static shaft shoulder and the electromagnetic heating coil are fixed by bolts.
5. The electromagnetic heating static shoulder friction stir welding mechanism of claim 1, wherein: and the upper end of the static shaft shoulder is fixedly provided with a connecting sleeve, and the upper end of the connecting sleeve is provided with an internal thread.
6. The electromagnetic heating static shoulder friction stir welding mechanism of claim 5, wherein: the static shaft shoulder is in threaded connection with the connecting sleeve.
7. The electromagnetic heating static shoulder friction stir welding mechanism of claim 5, wherein: the electromagnetic heating static shaft shoulder friction stir welding mechanism also comprises a main shaft and a tool handle; the main shaft is provided with an external thread in threaded connection with the internal thread; the cutter handle is connected with the main shaft and extends into the connecting sleeve; the stirring pin is fixedly connected with the knife handle.
8. The electromagnetic heating static shoulder friction stir welding mechanism of claim 7, wherein: and a heat insulation sleeve is arranged between the stirring needle and the knife handle.
9. The electromagnetic heating static shoulder friction stir welding mechanism of claim 7, wherein: the stirring pin is connected with the knife handle through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022145129.5U CN214134457U (en) | 2020-09-25 | 2020-09-25 | Electromagnetic heating static shaft shoulder friction stir welding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022145129.5U CN214134457U (en) | 2020-09-25 | 2020-09-25 | Electromagnetic heating static shaft shoulder friction stir welding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214134457U true CN214134457U (en) | 2021-09-07 |
Family
ID=77558488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022145129.5U Active CN214134457U (en) | 2020-09-25 | 2020-09-25 | Electromagnetic heating static shaft shoulder friction stir welding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214134457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247337A (en) * | 2020-09-25 | 2021-01-22 | 广州瑞松智能科技股份有限公司 | Electromagnetic heating static shaft shoulder friction stir welding mechanism and method |
-
2020
- 2020-09-25 CN CN202022145129.5U patent/CN214134457U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247337A (en) * | 2020-09-25 | 2021-01-22 | 广州瑞松智能科技股份有限公司 | Electromagnetic heating static shaft shoulder friction stir welding mechanism and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112247337A (en) | Electromagnetic heating static shaft shoulder friction stir welding mechanism and method | |
| WO2020133975A1 (en) | Rotation friction squeeze riveting apparatus and riveting method therefor | |
| CN103846563B (en) | A kind of laser friction stir welding method and its device | |
| CN107877016B (en) | Steel butt-jointed induction heating-stirring friction composite welding method and device | |
| CN111421223B (en) | Friction stir butt welding device for dissimilar materials and processing method thereof | |
| CN110524105B (en) | Rotary welding tool for friction welding and welding method | |
| CN214134457U (en) | Electromagnetic heating static shaft shoulder friction stir welding mechanism | |
| CN107150166B (en) | A kind of heat source assisted recombination formula twin shaft needleless dynamic agitation friction welding method | |
| CN109926710A (en) | A kind of back penetrates and the Friction Stir Welding device of Ultrasonic probe support auxiliary | |
| CN111421222B (en) | Friction stir butt welding device for large-thickness titanium-nickel dissimilar materials and processing method thereof | |
| CN106825908A (en) | A kind of device and method without keyhole agitating friction weldering slab | |
| CN109396636A (en) | A kind of laser coaxial heat is to auxiliary double-shaft shoulder friction stir welding method | |
| CN107199395B (en) | A kind of resistance heat source assisted recombination formula twin shaft needleless friction stir welding method | |
| CN107570900B (en) | High-frequency-electric arc hybrid welding method | |
| CN106583912A (en) | Laser coaxial type indirect thermally induced auxiliary micro stirring friction welding device | |
| CN107199394A (en) | A kind of stirring-head is powered assisted recombination formula Double shaft stirring friction welding method | |
| CN113927150A (en) | Middle wire filling type negative pressing-in amount low-acting-force friction stir welding method and equipment | |
| CN111496368A (en) | Thick plate aluminum alloy angle joint static shaft shoulder stirring friction welding device and method | |
| CN107150167B (en) | A kind of collet power supply assisted recombination formula twin shaft dynamic agitation friction welding method | |
| CN108672963A (en) | The welder and method of electric arc heat source and the coaxial In-situ reaction of frictional heat source | |
| CN214769645U (en) | Detachable stirring head for friction stir welding | |
| CN101474718B (en) | Stir friction composite welding stainless steel device with resistor heat and method thereof | |
| CN111421221B (en) | Friction stir butt welding device and processing method thereof | |
| CN211305187U (en) | Rotary welding tool for friction welding | |
| WO2024055561A1 (en) | Friction stir welding apparatus and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |