CN214769645U - Detachable stirring head for friction stir welding - Google Patents
Detachable stirring head for friction stir welding Download PDFInfo
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- CN214769645U CN214769645U CN202022783964.1U CN202022783964U CN214769645U CN 214769645 U CN214769645 U CN 214769645U CN 202022783964 U CN202022783964 U CN 202022783964U CN 214769645 U CN214769645 U CN 214769645U
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Abstract
The utility model belongs to the technical field of the stirring head, especially, relate to a friction stir welding uses can dismantle stirring head, including being used for the centre gripping handle of being connected with the main shaft and the stirring pin of installation on being fixed in the centre gripping handle, the through-hole has been seted up along the axis direction to the centre gripping handle, in the through-hole was located to stirring pin one end nestification, the other end was the free end, stirring pin and the coaxial setting of through-hole. The stirring head of this scheme adopts split type setting, can carry out the change of stirring head spare to the characteristic of processing material before welding different materials, and change convenient and fast, saves welding tool clamping time to can effectively improve product welding efficiency, change the part of pertinence to different processing materials simultaneously and weld still can avoid because of stirring needle and shaft shoulder wearing and tearing are serious or destroy scheduling problem among the welding process, guaranteed welding workpiece's welding quality, practice thrift manufacturing cost.
Description
Technical Field
The utility model belongs to the technical field of the stirring head, especially, relate to a friction stir welding uses can dismantle stirring head.
Background
The friction stir welding technology was proposed by the british institute of welding in 1991. The friction stir welding technology is mainly used for solving the connection of low-melting-point materials such as aluminum alloy and the like at first, and belongs to the solid-phase welding technology. Compared with the traditional fusion welding, the method has the advantages of high quality, small heat input, small deformation and the like, and can effectively avoid the common defects of air holes, cracks and the like in the fusion welding, so that the method is widely applied to the fields of shipbuilding, aerospace, rail transit, new energy automobiles and the like in recent years. The technical principle of friction stir welding is that a stirring needle is inserted into a welding workpiece in a rotating manner, then the stirring needle moves along the direction of a welding seam of the welding workpiece, the stirring needle and a shaft shoulder stir and rub the welding workpiece, so that the temperature of the material of the welding workpiece is raised and softened to reach a plastic state, the material of the welding workpiece in the plastic state is transferred from front to back around a stirring head under the driving of high-speed rotation of the stirring needle, and meanwhile, the rotating shaft shoulder has a forging and pressing effect on the welding seam metal, and the material is in diffusion connection to form compact intermetallic solid phase connection under the combined action of heat and a machine.
The heat required by friction stir welding is generated by friction between the shaft shoulder and the stirring needle and materials, so that the shaft shoulder and the stirring needle are abraded greatly in production, particularly high-melting-point high-strength materials such as stainless steel and titanium alloy are welded, the abrasion amount of the shaft shoulder and the stirring head is large, a large amount of welding flash, serious thinning, tunnel defects, broken needles and other welding quality problems are easy to occur, and the quality stability of a welded workpiece is greatly influenced. Meanwhile, the processing and replacement of the stirring head will also affect the welding production efficiency. Therefore, the stirring head with a reasonable and reliable structure is necessary, the welding quality can be guaranteed, the welding defect can be effectively avoided, the production cost can be saved, and the tool clamping time can be reduced.
In order to solve the above problems, it is urgently needed to develop a detachable stirring head for friction stir welding.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, an object of the utility model is to provide a friction stir welding uses can dismantle stirring head, the stirring head of this scheme adopts split type setting, can carry out the part change of pertinence to different materials, and change convenient and fast, save welding tool clamping time, thereby can effectively improve product welding efficiency, it can still avoid because of the serious or destruction scheduling problem of stirring needle and shaft shoulder wearing and tearing among the welding process still to weld to the part that different processing materials change the pertinence simultaneously, welding workpiece's welding quality has been guaranteed, and the production cost is saved.
The purpose of the utility model is realized by adopting the following technical scheme:
the utility model provides a friction stir welding uses can dismantle stirring head, is fixed in including the centre gripping handle and the installation that are used for being connected with the main shaft the last stirring pin of centre gripping handle, the through-hole has been seted up along the axis direction to the centre gripping handle, stirring pin one end nestification is located in the through-hole, the other end is the free end, stirring pin and the coaxial setting of through-hole.
Furthermore, the lower end of the clamping handle is provided with a supporting shoulder for fixing the stirring pin, a plurality of through holes are formed in the side wall of the supporting shoulder in a penetrating mode, and the stirring pin is fixed on the supporting shoulder after a plurality of bolts pass through the through holes.
Furthermore, a plurality of through holes are arranged perpendicular to the axial direction of the support shoulder.
Furthermore, the stirring head also comprises a shaft shoulder, the shaft shoulder is sleeved outside the supporting shoulder, and the shaft shoulder, the stirring pin and the through hole are coaxially arranged.
Furthermore, the shaft shoulder is provided with an internal thread, the supporting shoulder is provided with an external thread corresponding to the internal thread, and the shaft shoulder is sleeved on the supporting shoulder in a fixed connection mode through the matching of the internal thread and the external thread.
Furthermore, the bottom end face of the shaft shoulder is an inclined plane.
Further, the stirring pin and the shaft shoulder are formed in a split type or an integrated type processing mode.
Further, the free end of the stirring pin can be in a cylindrical, conical or eccentric circular structure.
Further, the surface of the stirring pin is provided with threads for promoting the migration of materials.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses a friction stir welding uses can dismantle stirring head, including being used for the centre gripping handle of being connected with the main shaft and the stirring pin of installation on being fixed in the centre gripping handle, the through-hole has been seted up along the axis direction to the centre gripping handle, in the through-hole was located to stirring pin one end nestification, the other end was the free end, stirring pin and the coaxial setting of through-hole. The stirring head of this scheme adopts split type setting, can carry out the change of stirring head spare to the characteristic of processing material before welding different materials, and change convenient and fast, saves welding tool clamping time to can effectively improve product welding efficiency, change the part of pertinence to different processing materials simultaneously and weld still can avoid because of stirring needle and shaft shoulder wearing and tearing are serious or destroy scheduling problem among the welding process, guaranteed welding workpiece's welding quality, practice thrift manufacturing cost.
Drawings
FIG. 1 is a front view of a preferred embodiment of a detachable stir head for friction stir welding according to the present invention;
FIG. 2 is a cross-sectional view of a preferred embodiment of a detachable stir head for friction stir welding according to the present invention;
figure 3 is an elevation view of a preferred embodiment of the clamping lever of the present invention.
In the figure: 100. a detachable stir head for friction stir welding; 1. a clamping handle; 11. supporting the shoulder; 12. a through hole; 13. a through hole; 2. a stirring pin; 4. and a shaft shoulder.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
The utility model relates to a friction stir welding is used can dismantle stirring head 100 is shown in fig. 1-fig. 3, including being used for the centre gripping handle 1 of being connected with the main shaft and installing the stirring needle 2 of being fixed in on the centre gripping handle 1, through-hole 12 has been seted up along the axis direction to centre gripping handle 1, in 2 one end nestings of stirring needle locate through-hole 12, the other end was the free end, stirring needle 2 and the coaxial setting of through-hole 12. The stirring head adopts a split type arrangement, wherein the clamping handle 1 is connected to the main shaft knife handle through a bolt, and is used for connecting the main shaft and the stirring needle 2 and transmitting power; before different materials are welded, the stirring head component can be replaced according to the characteristics of machining materials, the replacement is convenient and fast, the clamping time of a welding tool is saved, the welding efficiency of products can be effectively improved, meanwhile, the problems that the stirring needle 2 and the shaft shoulder 4 are seriously abraded or damaged in the welding process and the like can be avoided when the targeted components are welded, the welding quality of welding workpieces is guaranteed, and the production cost is saved.
In this embodiment, the lower end of the clamping handle 1 is provided with a supporting shoulder 11 for fixing the stirring pin 2, the supporting shoulder 11 is provided with a plurality of through holes 13 penetrating from the side wall, and the stirring pin 2 is fixed on the supporting shoulder 11 after a plurality of bolts pass through the through holes 13. The through hole 12 directly penetrates through the supporting shoulder 11, when the connection between the stirring pin 2 and the clamping handle 1 needs to be completed, the mounting end of the stirring pin 2 is inserted from the through hole 12, the stirring pin abuts against the blocking part in the through hole 12 and stops, a part of the stirring pin 2 is exposed below the supporting shoulder 11 at the moment, the position of the stirring pin 2 is kept unchanged at the moment, the bolt is correspondingly screwed into the through hole 13, the stirring pin 2 is firmly fixed on the supporting shoulder 11, and axial movement and autorotation cannot occur. When the stirring pin 2 needs to be replaced, the bolt is only required to be unscrewed, and a metal strip is taken to stretch into the clamping handle 1 from the other end of the through hole 12, so that the stirring pin 2 is ejected out.
Preferably, there are four through holes 13, and the four through holes 13 are perpendicular to the axial direction of the support shoulder 11 and are symmetrically arranged. This design makes the bolt twist position more convenient, and is better to the fixed effect of stirring needle 2 for stirring needle 2 can not take place not hard up or reverse.
The stirring head in the embodiment further comprises a shaft shoulder 4, and the shaft shoulder 4 is sleeved outside the supporting shoulder 11. In the friction stir welding process, the shaft shoulder 4 has the same stirring and friction effects on the welded workpiece except for the stirring pin 2, so that the connection stability of the shaft shoulder 4 has a great influence on the forming quality of the welded workpiece, the shaft shoulder 4 is provided with internal threads in the embodiment, the supporting shoulder 11 is provided with external threads corresponding to the internal threads, and the shaft shoulder 4 is sleeved on the supporting shoulder 11 in a fixed connection mode through the matching of the internal threads and the external threads. Make stable the fixing on centre gripping handle 1 of shaft shoulder 4 through this design, simultaneously shaft shoulder 4, stirring needle 2 and the coaxial setting of 12 three of through-hole can guarantee that shaft shoulder 4 can rotate with stirring needle 2 and centre gripping handle 1 synchronization, ensure the quality of welded work piece.
Preferably, the stirring pin 2 and the shaft shoulder 4 can be of the above-mentioned split structure or can be integrally formed. This design is because welding process, and the stirring pin 2 all can stir and rub welding workpiece with the shaft shoulder 4, all can contact welding workpiece promptly, when welding workpiece changed, not only need change stirring pin 2 in this scheme, also need change shaft shoulder 4 simultaneously, so the setting of integral type can accelerate change speed, improves welding efficiency.
Preferably, the bottom end face of the shaft shoulder 4 can be designed into different sizes and shapes, and the end face is a bevel. The design is beneficial to extruding plasticized materials and promotes the migration movement of the materials in the welding process.
It is worth mentioning that when the shaft shoulder 4 is in contact with a welding workpiece for a long time and is seriously abraded in the welding implementation process, the shaft shoulder 4 can be directly removed, the supporting shoulder 11 is directly used as the required shaft shoulder 4 for welding, the stable operation of welding production can be effectively ensured, and meanwhile, the production cost can be saved.
The shape of the free end of the stirring pin 2 in the embodiment can be a cylindrical structure, a conical structure or an eccentric circular structure, and the shape design can be selected according to actual needs, so that the material can be effectively stirred. And the surface of the stirring pin 2 is provided with threads for promoting the migration of materials, and the design is favorable for promoting the migration of materials in three-dimensional space.
On the basis of the structure, when the welded workpiece is made of light metal such as aluminum alloy, the shaft shoulder 4 and the stirring pin 2 can be made of wear-resistant structural steel such as H13 steel. When the welded workpiece is made of high-melting-point and high-strength materials such as stainless steel, titanium plates and the like, the shaft shoulder 4 and the stirring pin 2 can be made of wear-resistant high-temperature alloys such as GH4169 alloy and the like. (the stirring pin 2 and the shaft shoulder 4 are in an integrated structure). When the welded workpiece is made of different materials such as stainless steel and aluminum alloy, the shaft shoulder 4 can be made of structural materials such as H13 steel, and the stirring pin 2 can be made of high-temperature wear-resistant materials such as GH4169 and Inconel 625. (this kind of stirring pin 2 and shaft shoulder 4 split type structure).
Preferably, the present embodiment can be used for filling friction stir welding keyhole in addition to welding the workpiece. For the keyhole generated after friction stir welding, a stirring needle 2 with the same material or other materials and corresponding specifications can be manufactured according to the material of a workpiece to be welded, then the stirring needle 2 which rotates rapidly is inserted into the keyhole, at the moment, because the stirring needle 2 is close to the material of the workpiece to be welded and the thermal physical properties are similar or consistent, the stirring needle 2 gradually rubs, plastifies and mixes with the parent metal near the keyhole of the workpiece to be welded, the original friction stir keyhole is gradually filled by the plasticized stirring needle 2 along with the gradual insertion of the stirring needle 2 into the keyhole, meanwhile, the shaft shoulder 4 rubs and heats the material of the original keyhole and the material of the area near the original keyhole, the parent metal of the keyhole area is promoted to be further fused with the material of the stirring needle 2, and the filling of the friction stir welding keyhole is realized.
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 a friction stir welding uses can dismantle stirring head which characterized in that: including being used for the centre gripping handle of being connected with the main shaft and the installation be fixed in stirring needle on the centre gripping handle, the through-hole has been seted up along the axis direction to the centre gripping handle, stirring needle one end nestification is located in the through-hole, the other end is the free end, stirring needle and the coaxial setting of through-hole.
2. A removable stir head for friction stir welding as defined in claim 1 wherein: the lower end of the clamping handle is provided with a supporting shoulder for fixing the stirring pin, the supporting shoulder penetrates through the side wall to be provided with a plurality of through holes, and a plurality of bolts pass through the through holes and then fix the stirring pin on the supporting shoulder.
3. A removable stir head for friction stir welding as defined in claim 2 wherein: the through holes are arranged in a direction perpendicular to the axis of the support shoulder.
4. A removable stir head for friction stir welding as defined in claim 2 wherein: the stirring head further comprises a shaft shoulder, the shaft shoulder is sleeved outside the supporting shoulder, and the shaft shoulder, the stirring pin and the through hole are coaxially arranged.
5. A removable stir head for friction stir welding as recited in claim 4 wherein: the shaft shoulder is provided with an internal thread, the supporting shoulder is provided with an external thread corresponding to the internal thread, and the shaft shoulder is sleeved on the supporting shoulder in a fixed connection mode through the matching of the internal thread and the external thread.
6. A removable stir head for friction stir welding as recited in claim 4 wherein: the bottom end face of the shaft shoulder is an inclined plane.
7. A removable stir head for friction stir welding as recited in claim 4 wherein: the stirring pin and the shaft shoulder are formed in a split type or an integrated type processing mode.
8. A removable stir head for friction stir welding as defined in claim 1 wherein: the free end of the stirring pin can be in a cylindrical, conical or eccentric circular structure.
9. A removable stir head for friction stir welding as defined in claim 1 wherein: the surface of the stirring pin is provided with threads for promoting the migration of materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022783964.1U CN214769645U (en) | 2020-11-26 | 2020-11-26 | Detachable stirring head for friction stir welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022783964.1U CN214769645U (en) | 2020-11-26 | 2020-11-26 | Detachable stirring head for friction stir welding |
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| Publication Number | Publication Date |
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| CN214769645U true CN214769645U (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022783964.1U Active CN214769645U (en) | 2020-11-26 | 2020-11-26 | Detachable stirring head for friction stir welding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951959A (en) * | 2022-07-04 | 2022-08-30 | 河北科技大学 | Friction stir welding tool |
| CN117001137A (en) * | 2023-09-22 | 2023-11-07 | 江苏攀森智能科技有限公司 | Split quick-change cutter for friction stir welding of motor casing and replacement method |
-
2020
- 2020-11-26 CN CN202022783964.1U patent/CN214769645U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114951959A (en) * | 2022-07-04 | 2022-08-30 | 河北科技大学 | Friction stir welding tool |
| CN117001137A (en) * | 2023-09-22 | 2023-11-07 | 江苏攀森智能科技有限公司 | Split quick-change cutter for friction stir welding of motor casing and replacement method |
| CN117001137B (en) * | 2023-09-22 | 2023-12-15 | 江苏攀森智能科技有限公司 | Split quick-change cutter for friction stir welding of motor casing and replacement method |
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