CN211219136U - Static shaft shoulder friction stir welding tool - Google Patents
Static shaft shoulder friction stir welding tool Download PDFInfo
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- CN211219136U CN211219136U CN201921276378.9U CN201921276378U CN211219136U CN 211219136 U CN211219136 U CN 211219136U CN 201921276378 U CN201921276378 U CN 201921276378U CN 211219136 U CN211219136 U CN 211219136U
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- friction stir
- stir welding
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Abstract
The utility model discloses a quiet shoulder friction stir welding instrument relates to the welding technology field. The static shaft shoulder fixing cover is arranged on the main shaft outer sleeve, and the static shaft shoulder fixing cover and the static shaft shoulder are fixedly connected through the static shaft shoulder fastener; the upper end of the static shaft shoulder is provided with a step, and the static shaft shoulder is fixedly covered with a lower end surface which is matched with the step; the fixed cover of quiet shaft shoulder, quiet shaft shoulder fastener and quiet shaft shoulder have the cavity after the assembly, and the agitator head is arranged in the cavity, and the one end centre gripping of agitator head is in on the welding main shaft, the other end of agitator head stretches out from the one end of quiet shaft shoulder. The utility model provides a pair of quiet shoulder friction stir welding instrument can improve welding tool's rigidity, guarantees the precision of instrument in the welding process, improves quiet shoulder friction stir welding instrument's stability and life.
Description
Technical Field
The utility model relates to the field of welding technique, especially, relate to a quiet shoulder friction stir welding instrument.
Background
Friction Stir Welding (FSW) is a new solid phase joining technique invented in 1991 by The Welding Institute (TWI) of the united kingdom. The process is that a stirring head consisting of a shaft shoulder and a stirring needle is inserted into a welding seam and moves forwards while rotating at a high speed, materials to be welded are plasticized by utilizing friction heat, plastic flow is generated under the driving of the stirring head, the welding seam is formed under the forging and pressing action of the shaft shoulder, and solid-phase connection is realized.
The stirring head is a core component of friction stir welding, provides heat required by material plasticization in the welding process through friction with workpieces, and is a carrier for directional material flow in a welding seam area. In the friction stir welding process, due to the rotation and extrusion of the stirring head, plastic materials in the welding line can overflow out of the welding line area to form 'flash', so that the welding line area is slightly thinner than the base metal, and the surface quality and the joint performance of the welding line are not facilitated. At present, in industrial production, mechanical polishing is often needed to remove flash, so that the production efficiency is reduced, and the surface quality of a welded workpiece is easily damaged.
The design and manufacture of the stirring head are key technologies for realizing friction stir welding, and related mechanisms at home and abroad carry out a great deal of research on the aspects of shape design, material selection, processing technology and the like of the stirring head. At present, there are two main ways to eliminate flash: firstly, designing the end surface of a shaft shoulder of a special stirring head, and firstly, changing the end surface of the shaft shoulder of the stirring head; secondly, a device or a structure is additionally arranged on the stirring head, for example, a cutting head or the outer edge of a shaft shoulder is added to be processed into a cutting groove. However, both methods do not eliminate the burrs well, and the first method can reduce the amount of the burrs but cannot completely eliminate the burrs, and the second method causes poor weld surface quality due to the adhesion of the burrs to the stirring head due to the high temperature of the burrs. The static shaft shoulder friction stir welding tool and the method thereof can solve the problems of weld thinning and flash, but the whole tool structure is more complex because the stirring head and the static shaft shoulder sleeve are in bearing transition, and the rigidity of the static shaft shoulder part is lower, so that the stability and the service life of the static shaft shoulder friction stir welding tool are poorer.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model discloses a main aim at provides a quiet shoulder friction stir welding instrument, can improve welding tool's rigidity, guarantees the precision of instrument among the welding process, improves quiet shoulder friction stir welding instrument's stability and life.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a static shaft shoulder friction stir welding tool is used for being installed on a welding machine tool and comprises a static shaft shoulder fixing cover, a stirring head, a static shaft shoulder fastener and a static shaft shoulder, wherein the welding machine tool comprises a welding main shaft and a main shaft outer sleeve arranged on the outer side of the welding main shaft; the upper end of the static shaft shoulder is provided with a step, and the static shaft shoulder is fixedly covered with a lower end face matched with the step; the fixed cover of quiet shaft shoulder, quiet shaft shoulder fastener and quiet shaft shoulder have the cavity after assembling, the agitator head is arranged in the cavity, the one end centre gripping of agitator head is in on the welding main shaft, the other end of agitator head is followed the one end of quiet shaft shoulder stretches out.
Optionally, the fixed cover of quiet shoulder is loudspeaker form, the fixed cover of quiet shoulder includes quiet shoulder installation department, quiet shoulder installation department is equipped with the screw thread, quiet shoulder fastener is screwed and is installed quiet shoulder installation department.
Optionally, an inner diameter of one end of the stationary shoulder fastener is smaller than an outer diameter of the step to lock the step of the stationary shoulder in place.
Optionally, the stationary shoulder fixing cover is provided with a plurality of heat dissipation holes.
Optionally, the heat dissipation holes are elongated holes parallel to the axial direction of the stirring head.
Optionally, the heat dissipation holes are uniformly distributed on the stationary shaft shoulder fixing cover.
Optionally, the stirring head comprises, from top to bottom, a clamping portion for clamping the welding spindle, a positioning portion for axially positioning the stirring head, a shoulder, and a stirring pin; the clamping part comprises a clamping handle and a clamping surface; and a dead shaft shoulder hole is formed in one end of the dead shaft shoulder, and the shaft shoulder and the stirring pin extend out of the dead shaft shoulder hole.
Optionally, the dead axle shoulder hole and the shaft shoulder are in clearance fit, and the diameter difference between the dead axle shoulder hole and the shaft shoulder is 0.05-0.5 mm.
Optionally, the shaft shoulder penetrates through the dead shaft shoulder hole and extends out of the dead shaft shoulder hole by 0.1-0.8 mm.
Optionally, a bearing is further mounted on the stirring head, and the outer circumferential surface of the bearing is in interference fit with the inner surface of the stationary shaft shoulder.
The utility model provides a pair of quiet shoulder friction stir welding instrument fixes the quiet shoulder snap-on of quiet shoulder friction stir welding instrument on main shaft overcoat (non-rotating part) through quiet shoulder fixed cover, improves welding instrument's rigidity greatly, guarantees the precision of instrument in the welding process, improves quiet shoulder friction stir welding instrument's stability and life.
The utility model provides a pair of quiet shoulder friction stir welding instrument has following advantage: the method can effectively avoid the generation of flash in the welding process, and obtain high-quality welding lines with smooth surfaces. And secondly, the welding seam material is extruded into the welding seam as much as possible under the extrusion action of the end face of the dead axle shoulder sleeve, so that the thinning of the welding seam is reduced or avoided, and the mechanical property of the joint is improved. And thirdly, the structure of the welding tool is greatly simplified, the rigidity of the tool is improved, and the stability and the service life of the welding tool are further ensured. And fourthly, no flash is generated in the welding process, the surface of the welding seam is smooth, the manual polishing process is reduced, and the production efficiency is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an exploded schematic view of a static shoulder friction stir welding tool according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a pin tool of the static shoulder friction stir welding tool of FIG. 1;
FIG. 3 is a schematic illustration of an assembled static shoulder friction stir welding tool according to the FIG. 1 embodiment;
FIG. 4 is a schematic assembled static shoulder retaining cap, static shoulder fastener, and static shoulder of a static shoulder friction stir welding tool according to FIG. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be understood that the terms "X axis", "Y axis", "Z axis", "vertical", "parallel", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is an exploded schematic view of a static shoulder friction stir welding tool according to an embodiment of the present invention. FIG. 2 is a schematic illustration of a pin tool of the static shoulder friction stir welding tool of FIG. 1. FIG. 3 is a schematic illustration of an assembled static shoulder friction stir welding tool according to the FIG. 1 embodiment. FIG. 4 is a schematic assembled static shoulder retaining cap, static shoulder fastener, and static shoulder of a static shoulder friction stir welding tool according to FIG. 1. A static shoulder friction stir welding tool according to the present invention will be described in detail with reference to fig. 1 to 4. The utility model discloses a quiet shoulder friction stir welding instrument for install on welding lathe 5, welding lathe 5 includes welding main shaft 51 and establishes the main shaft overcoat 52 in the welding main shaft 51 outside. In general, a static shoulder friction stir welding tool may include a static shoulder retaining cap 1, a stir head 2, a static shoulder fastener 3, and a static shoulder 4. The stationary shoulder fixing cover 1 is mounted on the spindle housing 52 by a fastener. The static shaft shoulder fixing cover 1 and the static shaft shoulder 4 are fixedly connected through a static shaft shoulder fastener 3. The upper end of the static shaft shoulder 4 is provided with a step 41. The inner diameter of one end of the static shaft shoulder fastener 3 is smaller than the outer diameter of the step 41, and the inner diameter of the other end of the static shaft shoulder fastener 3 is larger than the outer diameter of the step 41, so that the step 41 of the static shaft shoulder 4 is locked and positioned by the static shaft shoulder fastener 3 after assembly. The static shaft shoulder fixing cover 1 is provided with a lower end face 11 matched with the step 41 in a matching mode, so that the combination of the static shaft shoulder fixing cover 1 and the static shaft shoulder 4 after assembly is firmer and more reliable. The stationary shaft shoulder fixing cover 1, the stationary shaft shoulder fastening piece 3 and the stationary shaft shoulder 4 are provided with a cavity 6 after being assembled. The stirring head 2 is arranged in the cavity 6. One end of the pin 2 is held by the welding spindle 51, and the other end of the pin 2 protrudes from the stationary shoulder hole 42 at one end of the stationary shoulder 4. The static shaft shoulder 4 of the static shaft shoulder friction stir welding tool is directly fixed on the spindle outer sleeve 52 (namely, the non-rotating part of the welding machine tool 5) through the static shaft shoulder fixing cover 1, so that the rigidity of the welding tool is greatly improved, the precision of the tool in the welding process is ensured, and the stability and the service life of the static shaft shoulder friction stir welding tool are improved.
Specifically, the stationary shoulder fixing cover 1 is horn-shaped. The stationary shoulder fixing cover 1 includes a stationary shoulder mounting portion 12. The stationary shoulder mounting part 12 is provided with external threads, and the stationary shoulder fastener 3 is mounted on the stationary shoulder mounting part 12 by screwing. The other end (the horn mouth end) of the static shaft shoulder fixing cover 1 is set to be a flange surface, a mounting hole is formed in the flange surface, and the static shaft shoulder fixing cover 1 is mounted on a non-rotating part of the welding machine tool 5 through a fastener. In the welding process, because the static shaft shoulder 4 of the static shaft shoulder friction stir welding tool does not participate in rotation, the static shaft shoulder is fixed on the non-rotating part of the main shaft outer sleeve 52 through the static shaft shoulder fixing cover 1, meanwhile, the fixing cover can provide enough rigidity, the fit clearance (0.05-0.5 mm) and the rotation precision between the static shaft shoulder hole 42 and the stirring pin of the stirring head 2 can be guaranteed without a bearing, and meanwhile, the shaft shoulder 23 can provide enough forging pressure.
Furthermore, a plurality of heat dissipation holes 13 are formed in the stationary shaft shoulder fixing cover 1. The radiating holes 13 are long-strip-shaped holes parallel to the axial direction of the stirring head 2 and are uniformly distributed on the fixed cover 1 of the static shaft shoulder. The heat dissipation holes 13 can improve the heat dissipation efficiency, reduce the weight of the stationary shoulder fixing cover 1, and observe the rotation condition of the stirring head 2 in the welding process.
The mixing head 2 includes a holding portion 21, a positioning portion 22, a shoulder 23, and a mixing pin 24 from top to bottom. The clamping portion 21 is used to facilitate the welding spindle 51 to clamp the stirring head 2. The clamping portion 21 includes a clamping shank 25 and a clamping surface 26. The positioning portion 22 is an annular protruding structure provided on the welding head 2, and is used for axially positioning the welding head 2 when the welding spindle 51 clamps the welding head 2. The shaft shoulder 23 and the stirring pin 24 are arranged in the dead shaft shoulder hole 42 in a penetrating way and extend out of the dead shaft shoulder hole 42. After assembly, the dead axle shoulder hole 42 is in clearance fit with the axle shoulder 23, and the stirring head 2 is not interfered with the dead axle shoulder fixing cover 1, the dead axle shoulder fastening piece 3 and the dead axle shoulder 4. In a preferred embodiment, the diameter difference between the dead axle shoulder hole 42 and the axle shoulder 23 is 0.05-0.5 mm. The distance that the shaft shoulder 23 extends out of the dead shaft shoulder hole 42 is 0.1-0.8 mm. By the design, the flash can be effectively avoided in the welding process, and a high-quality welding seam with a smooth surface is obtained. In addition, in the welding process, the tool is pressed down, the end face of the static shaft shoulder is tightly attached to the surface of a workpiece, certain forging pressure is applied to ensure that a welding seam is formed compactly, and the end face of the static shaft shoulder can properly extrude the welding seam material, so that the welding seam material is extruded into the welding seam as much as possible, the welding seam thinning is reduced or avoided, and the mechanical property of the joint is improved.
In addition, a bearing (not shown in the figure) is also arranged on the stirring head 2, and the outer circumferential surface of the bearing is in interference fit with the inner surface of the static shaft shoulder. Through the installation of bearing to further improve welding tool's rigidity, guarantee the precision of welding in-process instrument, improve quiet shoulder friction stir welding tool's stability and life.
The utility model provides a pair of quiet shoulder friction stir welding instrument fixes the quiet shoulder snap-on of quiet shoulder friction stir welding instrument on main shaft overcoat (non-rotating part) through quiet shoulder fixed cover, improves welding instrument's rigidity greatly, guarantees the precision of instrument in the welding process, improves quiet shoulder friction stir welding instrument's stability and life.
The utility model provides a pair of quiet shoulder friction stir welding instrument has following advantage: the method can effectively avoid the generation of flash in the welding process, and obtain high-quality welding lines with smooth surfaces. And secondly, the welding seam material is extruded into the welding seam as much as possible under the extrusion action of the end face of the dead axle shoulder sleeve, so that the thinning of the welding seam is reduced or avoided, and the mechanical property of the joint is improved. And thirdly, the structure of the welding tool is greatly simplified, the rigidity of the tool is improved, and the stability and the service life of the welding tool are further ensured. And fourthly, no flash is generated in the welding process, the surface of the welding seam is smooth, the manual polishing process is reduced, and the production efficiency is greatly improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. A static shaft shoulder friction stir welding tool is used for being installed on a welding machine tool and is characterized by comprising a static shaft shoulder fixing cover, a stirring head, a static shaft shoulder fastener and a static shaft shoulder, wherein the welding machine tool comprises a welding main shaft and a main shaft outer sleeve arranged on the outer side of the welding main shaft; the upper end of the static shaft shoulder is provided with a step, and the static shaft shoulder is fixedly covered with a lower end face matched with the step; the fixed cover of quiet shaft shoulder, quiet shaft shoulder fastener and quiet shaft shoulder have the cavity after assembling, the agitator head is arranged in the cavity, the one end centre gripping of agitator head is in on the welding main shaft, the other end of agitator head is followed the one end of quiet shaft shoulder stretches out.
2. The static shoulder friction stir welding tool of claim 1, wherein the static shoulder fixing cover is horn-shaped, the static shoulder fixing cover comprises a static shoulder mounting portion, the static shoulder mounting portion is provided with threads, and the static shoulder fastener is screwed and mounted on the static shoulder mounting portion.
3. A static shoulder friction stir welding tool as set forth in claim 2 wherein said static shoulder fastener has an inner diameter at one end thereof which is smaller than an outer diameter of said step to lock said step of said static shoulder in place.
4. The friction stir welding tool of claim 2 wherein said stationary shoulder retainer cap has a plurality of heat dissipation apertures therein.
5. A static shoulder friction stir welding tool as set forth in claim 4 wherein said heat dissipation apertures are elongated apertures parallel to the axial direction of said stir head.
6. A static shoulder friction stir welding tool according to claim 4 wherein said louvers are evenly distributed across said static shoulder retainer.
7. The static shoulder friction stir welding tool of any one of claims 1-6, wherein said stir head comprises, from top to bottom, a clamping portion for clamping to said welding spindle, a positioning portion for axially positioning said stir head, a shoulder, and a pin; the clamping part comprises a clamping handle and a clamping surface; and a dead shaft shoulder hole is formed in one end of the dead shaft shoulder, and the shaft shoulder and the stirring pin extend out of the dead shaft shoulder hole.
8. The static shoulder friction stir welding tool of claim 7, wherein said static shoulder bore is clearance fit with said shoulder, and the diameter difference between said static shoulder bore and said shoulder is 0.05-0.5 mm.
9. The static shoulder friction stir welding tool of claim 7, wherein said shoulder is disposed through said static shoulder hole and extends 0.1-0.8 mm beyond said static shoulder hole.
10. The static shoulder friction stir welding tool of claim 7 wherein said tool head further comprises a bearing mounted thereon, said bearing having an outer circumferential surface in interference fit with an inner surface of said static shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276378.9U CN211219136U (en) | 2019-08-08 | 2019-08-08 | Static shaft shoulder friction stir welding tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276378.9U CN211219136U (en) | 2019-08-08 | 2019-08-08 | Static shaft shoulder friction stir welding tool |
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| CN211219136U true CN211219136U (en) | 2020-08-11 |
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| CN201921276378.9U Active CN211219136U (en) | 2019-08-08 | 2019-08-08 | Static shaft shoulder friction stir welding tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122768A (en) * | 2020-09-23 | 2020-12-25 | 昆山哈工万洲焊接研究院有限公司 | Static shaft shoulder friction stir welding tool, welding device and welding system |
| CN112247340A (en) * | 2020-10-13 | 2021-01-22 | 孚斯威焊接科技(上海)有限公司 | Method for manufacturing aluminum alloy template |
-
2019
- 2019-08-08 CN CN201921276378.9U patent/CN211219136U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122768A (en) * | 2020-09-23 | 2020-12-25 | 昆山哈工万洲焊接研究院有限公司 | Static shaft shoulder friction stir welding tool, welding device and welding system |
| CN112122768B (en) * | 2020-09-23 | 2024-03-15 | 苏州万智新能源科技有限公司 | Static shoulder friction stir welding tool, welding device and welding system |
| CN112247340A (en) * | 2020-10-13 | 2021-01-22 | 孚斯威焊接科技(上海)有限公司 | Method for manufacturing aluminum alloy template |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220323 Address after: 314100 plant 51, No. 99, Xinda Road, Huimin street, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Fosway Technology (Jiashan) Co.,Ltd. Address before: 201616 C-16, 1st floor, building 2, No. 88, Qin'an street, Xiaokunshan Town, Songjiang District, Shanghai Patentee before: Foxway welding technology (Shanghai) Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Friction stir welding tool for static shaft shoulder Effective date of registration: 20221006 Granted publication date: 20200811 Pledgee: Bank of Jiaxing science and technology branch of Limited by Share Ltd. Pledgor: Fosway Technology (Jiashan) Co.,Ltd. Registration number: Y2022980017427 |