CN211219135U - Static shaft shoulder friction stir welding tool - Google Patents
Static shaft shoulder friction stir welding tool Download PDFInfo
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- CN211219135U CN211219135U CN201921276377.4U CN201921276377U CN211219135U CN 211219135 U CN211219135 U CN 211219135U CN 201921276377 U CN201921276377 U CN 201921276377U CN 211219135 U CN211219135 U CN 211219135U
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- stir welding
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Abstract
The utility model discloses a quiet shoulder friction stir welding instrument relates to the welding technology field. Including stirring head, first bearing and second bearing, bearing retainer ring, bearing fastener, quiet shoulder cover, first bearing, bearing retainer ring, second bearing and bearing fastener install in proper order on the stirring head, quiet shoulder cover is equipped with interior cylinder, interior cylinder with the outer cylinder interference fit installation of first bearing and second bearing, the outer peripheral face of quiet shoulder cover is equipped with a plurality of groups of through-holes, a through-hole in a plurality of groups of through-holes is used for connecting the trachea, in order to quiet shoulder cover is inside blows, other through-holes in a plurality of groups of through-holes are used for will blowing in the inside gas outgoing of quiet shoulder cover. The utility model provides a pair of quiet shoulder friction stir welding instrument can be convenient when realizing that the welding seam does not have to attenuate and does not have overlap, improves welding instrument radiating efficiency, and then improves stability and the life-span that the instrument used.
Description
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. However, the static shaft shoulder friction stir welding tool has a relatively complex structure, works in a high-temperature environment for a long time, and meanwhile, the shaft shoulder of the stirring head and the hole of the static shaft shoulder need to be in clearance fit and require high rotation precision, so that the heat dissipation of the tool is particularly important.
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 be convenient when realizing that the welding seam does not have to attenuate and does not have the overlap, improves welding instrument radiating efficiency, and then improves stability and the life-span that the instrument used.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model provides a quiet shoulder friction stir welding instrument, its characterized in that, includes stirring head, first bearing and second bearing, retaining ring, bearing fastener, quiet shoulder cover, first bearing, retaining ring, second bearing and bearing fastener install in proper order on the stirring head, quiet shoulder cover is equipped with the inner cylinder face, the inner cylinder face with the outer cylinder face interference fit installation of first bearing and second bearing, the outer peripheral face of quiet shoulder cover is equipped with a plurality of groups of through-holes, a through-hole in a plurality of groups of through-holes is used for connecting the trachea, with to the inside gas outgoing of quiet shoulder cover, other through-holes in a plurality of groups of through-holes are used for insufflating the inside gas outgoing of quiet shoulder cover.
Optionally, the stationary shaft shoulder sleeve includes an outer sleeve cylindrical surface, a transition conical surface and a shaft shoulder cylindrical surface, the plurality of groups of through holes include three groups of through holes, a first group of through holes are uniformly arranged on the outer sleeve cylindrical surface, a second group of through holes are uniformly arranged on the transition conical surface, and a third group of through holes are uniformly arranged on the shaft shoulder cylindrical surface.
Optionally, the air tube is connected to one of the first or second set of through holes.
Optionally, the stirring head is equipped with and is used for the location step locating surface, bearing installation department and the bearing fastener installation department of first bearing, bearing retainer ring and second bearing are installed in proper order on the bearing installation department, first bearing with the second bearing adopts back to back or face-to-face combination mode to install, the bearing fastener install in order to be used for right on the bearing fastener installation department first bearing and second bearing carry on spacingly.
Optionally, an inner positioning surface is arranged in the dead axle shoulder sleeve, and the inner positioning surface is in close contact with the end surface of the second bearing.
Optionally, the length of the bearing mounting portion is no greater than the sum of the lengths of the first bearing, the bearing retainer ring and the second bearing.
Optionally, the bearing fastener mounting portion is provided with a threaded formation for mounting a bearing fastener.
Optionally, the stirring head is further provided with a clamping handle for clamping the stirring head, and a clamping face convenient for clamping the stirring head is arranged on the clamping handle.
Optionally, the mixing head is further provided with a shaft shoulder for eliminating flash and a mixing needle arranged on the shaft shoulder, the static shaft shoulder is sleeved with a static shaft shoulder hole, and the shaft shoulder penetrates through the static shaft shoulder hole.
Optionally, the dead axle shoulder hole is in clearance fit with the axle shoulder, and the diameter difference between the dead axle shoulder hole and the axle shoulder is 0.05-0.5 mm; the shaft shoulder penetrates through and extends out of the dead shaft shoulder hole by 0.1-0.8 mm.
The utility model provides a pair of quiet shoulder friction stir welding instrument is equipped with a plurality of groups through-holes through the outer peripheral face at quiet shoulder cover, a through-hole in a plurality of groups through-holes is used for connecting the trachea, with to quiet shoulder cover is inside to blow, other through-holes in a plurality of groups through-holes are used for blowing in the inside gas outgoing of quiet shoulder cover to the realization is to quiet shoulder cover and quiet shoulder friction stir welding instrument's high efficiency cooling, guarantees the gyration precision of instrument among the welding process, improves welding process's stability and instrument life-span.
The utility model provides a pair of quiet shoulder friction stir welding instrument, the outer peripheral face of quiet shoulder cover is equipped with a plurality of groups through-holes, and wherein a set of through-hole sets up on the shoulder face of cylinder, and it can also play the effect of the inside welding material of the quiet shoulder cover of excessive income among the welding process of discharging, avoids the production of overlap in the welding process more effectively, obtains the smooth welding seam in surface, need not follow-up process of polishing, improves production efficiency greatly.
The utility model provides a pair of quiet shoulder friction stir welding instrument has following advantage:
1. the production of flash can be effectively avoided in the welding process, the welding seam with a smooth surface is obtained, the subsequent polishing process is not needed, and the production efficiency is greatly improved.
2. Through the extrusion effect of the shaft shoulder, more materials are limited in the welding line, the thinning of the welding line is reduced, and the mechanical property of the joint is improved.
3. The external air pipe of effectual utilization dispels the heat to whole instrument, reduces the adverse effect of high temperature operational environment to welding tool, improves the stability and the life-span that the instrument used, and then improves production efficiency.
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 stationary shoulder sleeve of a stationary shoulder friction stir welding tool according to FIG. 1;
FIG. 3 is a cross-sectional schematic view of a stationary shoulder sleeve of a stationary shoulder friction stir welding tool according to FIG. 1;
fig. 4 is a schematic structural diagram of a static shoulder friction stir welding tool provided by an embodiment of the present invention after assembly.
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 traditional friction stir welding process, the whole stirring tool is in a high-speed rotating state, the heat dissipation structure is designed on the tool, the effect is not obvious, meanwhile, the air blowing pipe can blow air on the outer surface of the tool only at a slightly far distance, and the heat dissipation effect is limited. In view of this, the inventor of the present invention provides a novel static shoulder friction stir welding tool with a heat dissipation structure.
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 stationary shoulder sleeve of a stationary shoulder friction stir welding tool according to FIG. 1. FIG. 3 is a cross-sectional schematic view of a stationary shoulder sleeve of a stationary shoulder friction stir welding tool according to FIG. 1. Fig. 4 is a schematic structural diagram of a static shoulder friction stir welding tool provided by an embodiment of the present invention after assembly. 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, generally, can include stirring head 1, primary shaft holds 2 and second bearing 4, retaining ring 3, bearing fastener 5, quiet shoulder cover 6. The first bearing 2, the bearing retainer ring 3, the second bearing 4 and the bearing fastener 5 are sequentially arranged on the stirring head 1. The dead axle shoulder 6 is provided with an inner cylindrical surface 61. The inner cylindrical surface 61 is fitted with interference with the outer cylindrical surfaces (21, 41) of the first and second bearings 2, 4. The outer peripheral surface of the dead axle shoulder sleeve 6 is provided with a plurality of groups of through holes 7. One through hole in the plurality of groups of through holes 7 is used for connecting an air pipe so as to blow air into the interior of the dead axle shoulder sleeve 6, and the other through holes in the plurality of groups of through holes 7 are used for discharging the air blown into the interior of the dead axle shoulder sleeve 6.
Specifically, as shown in fig. 2 and 3, the dead axle shoulder 6 includes an outer sleeve cylindrical surface 65, a transition conical surface 66, and a shoulder cylindrical surface 67. The plurality of sets of through holes 7 includes three sets of through holes. The first group of through holes 71 are uniformly arranged on the outer sleeve cylindrical surface 65, the second group of through holes 72 are uniformly arranged on the transition conical surface 66, and the third group of through holes 73 are uniformly arranged on the shaft shoulder cylindrical surface 67. Because the utility model provides a pair of quiet axle shoulder friction stir welding instrument is in welding process, quiet axle shoulder cover 6 is in static irrotational state, thereby can be directly put through the trachea in a through-hole of a plurality of groups through-hole 7, realize directly letting in quiet axle shoulder cover 6 inside with gas, then gas is discharged from other through-holes again, thereby take out the heat of quiet axle shoulder cover 6 inside and stirring head 1, realize cooling down quiet axle shoulder friction stir welding instrument's high efficiency, guarantee the gyration precision of instrument among the welding process, improve welding process's stability and instrument life-span.
In a particular embodiment, the air tube is connected to one of the first set of through holes or the second set of through holes. The design is more convenient for discharging the heat of the stirring head 1, and when gas is discharged from the third group of through holes 73 and the dead axle shoulder hole 63, the welding material overflowed through the gap between the dead axle shoulder hole 63 and the shaft shoulder 16 in the welding process can be blown out, so that the generation of flash in the welding process is further effectively avoided, a welding seam with a smooth surface is obtained, the subsequent grinding process is not needed, and the production efficiency is greatly improved.
In a particular embodiment, the pin 1 is provided with a step locating surface 11 for locating the first bearing 2, a bearing mounting 12 and a bearing fastener mounting 13. When assembled, the first bearing 2, the retainer ring 3, and the second bearing 4 are mounted on the bearing mounting portion 12 in this order. One end of the first bearing 2 far away from the second bearing 4 is abutted against the step positioning surface 11. The first bearing 2 and the second bearing 4 are installed in a back-to-back or face-to-face combination mode, so that the axial upsetting force in the welding process and the radial force generated by the inclination angle and the advancing resistance are borne by the combination of the first bearing 2 and the second bearing 4, the back-to-back or face-to-face combination mode can better bear the axial force and the radial force in the welding process, the rotation precision of a tool in the welding process is guaranteed, and the stability in the welding process and the service life of the tool are improved. The bearing fastener 5 is mounted on the bearing fastener mounting portion 13. The bearing fastener 5 is used for limiting the first bearing 2 and the second bearing 4 and preventing the first bearing 2 and the second bearing 4 from moving. The length of the bearing mounting part 12 is not more than the sum of the lengths of the first bearing 2, the bearing retainer 3 and the second bearing 4, so that the bearing fastener 5 can be ensured to be screwed on the bearing fastener mounting part 13 to limit the axial movement of the bearing. The bearing fastener 5 is assembled without interfering with the inner cavity of the dead axle shoulder sleeve 6. The static shaft shoulder sleeve 6 is provided with an inner cylindrical surface 61, and the inner cylindrical surface 61 and the outer cylindrical surfaces (21 and 41) of the first bearing 2 and the second bearing 4 are installed in an interference fit mode, so that when the stirring head 1 drives the shaft shoulder 16 and the stirring needle 17 to rotate in the welding process, the static shaft shoulder sleeve 6 is in a static non-rotating state.
Specifically, each of the first bearing 2 and the second bearing 4 may employ any one of an angular contact bearing, a tapered roller bearing, or a deep groove ball bearing. The outer diameters of the first bearing 2 and the second bearing 4 are slightly larger than the diameter of the inner cylindrical surface 61 of the stationary shaft shoulder sleeve 6, so that the first bearing 2 and the second bearing 4 are in interference fit after being assembled. The interference fit can be installed by the principle of expansion with heat and contraction with cold.
Further, an inner positioning surface 62 is arranged in the dead axle shoulder sleeve 6. After assembly, the inner positioning surface 62 is in close contact with the end surface 42 of the second bearing 4, so that the static shaft shoulder sleeve 6 can be more firmly and tightly mounted with the first bearing 2 and the second bearing 4, and the service life is prolonged.
In a particular embodiment, the bearing fastener mounting portion 13 is provided with a threaded configuration for mounting the bearing fastener 5. Corresponding threads are arranged in the bearing fastening piece 5, so that the bearing fastening piece 5 is screwed and installed.
In a particular embodiment, the pin 1 is further provided with a clamping handle 14 for clamping the pin 1. The clamping handle 14 is provided with a clamping surface 15 which is convenient for clamping the stirring head 1. The arrangement of the clamping handle 14 and the clamping surface 15 enables the static shoulder friction stir welding tool to be conveniently installed on a workbench.
In another specific embodiment, as shown in fig. 2 and 3, the dead axle shoulder sleeve 6 is provided with a dead axle shoulder hole 63. The shaft shoulder 16 is arranged in the dead shaft shoulder hole 63 in a penetrating way. The dead axle shoulder hole 63 is in clearance fit with the shaft shoulder 16, and the diameter difference between the dead axle shoulder hole 63 and the shaft shoulder 16 is 0.05-0.5 mm. The length of the dead axle shoulder hole end face 64, through which the shaft shoulder 16 penetrates and extends out of the dead axle shoulder hole 63, is 0.1-0.8 mm. The design can extrude the welding seam material into the welding seam as much as possible through the extrusion effect of the end surface of the shaft shoulder 16 of the static shaft shoulder sleeve 6, thereby reducing or avoiding the thinning of the welding seam, improving the mechanical property of the joint, effectively avoiding the generation of flash and obtaining the high-quality welding seam with smooth surface. Optionally, the end surface of the shoulder 16 is planar, concave or helical.
The utility model provides a pair of quiet shoulder friction stir welding instrument, each part of its welding instrument installation matches each other, and duplex bearing combination inner circle is fixed good on stirring head 1, and bearing inner race and quiet shoulder cover 6 are fixed good, have guaranteed the relative position of shaft shoulder terminal surface with quiet shoulder terminal surface to and stirring head shoulder diameter is even for clearance fit with quiet shoulder hole, improves welding instrument's among the welding process gyration precision.
The utility model provides a pair of quiet shoulder friction stir welding instrument is equipped with a plurality of groups through-holes through the outer peripheral face at quiet shoulder cover, a through-hole in a plurality of groups through-holes is used for connecting the trachea, with to quiet shoulder cover is inside to blow, other through-holes in a plurality of groups through-holes are used for blowing in the inside gas outgoing of quiet shoulder cover to the realization is to quiet shoulder cover and quiet shoulder friction stir welding instrument's high efficiency cooling, guarantees the gyration precision of instrument among the welding process, improves welding process's stability and instrument life-span.
The utility model provides a pair of quiet shoulder friction stir welding instrument, the outer peripheral face of quiet shoulder cover is equipped with a plurality of groups through-holes, and wherein a set of through-hole sets up on the shoulder face of cylinder, and it can also play the effect of the inside welding material of the quiet shoulder cover of excessive income among the welding process of discharging, avoids the production of overlap in the welding process more effectively, obtains the smooth welding seam in surface, need not follow-up process of polishing, improves production efficiency greatly.
The utility model provides a pair of quiet shoulder friction stir welding instrument has following advantage:
1. the production of flash can be effectively avoided in the welding process, the welding seam with a smooth surface is obtained, the subsequent polishing process is not needed, and the production efficiency is greatly improved.
2. Through the extrusion effect of the shaft shoulder, more materials are limited in the welding line, the thinning of the welding line is reduced, and the mechanical property of the joint is improved.
3. The external air pipe of effectual utilization dispels the heat to whole instrument, reduces the adverse effect of high temperature operational environment to welding tool, improves the stability and the life-span that the instrument used, and then improves production efficiency.
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. The utility model provides a quiet shoulder friction stir welding instrument, its characterized in that, includes stirring head, first bearing and second bearing, retaining ring, bearing fastener, quiet shoulder cover, first bearing, retaining ring, second bearing and bearing fastener install in proper order on the stirring head, quiet shoulder cover is equipped with the inner cylinder face, the inner cylinder face with the outer cylinder face interference fit installation of first bearing and second bearing, the outer peripheral face of quiet shoulder cover is equipped with a plurality of groups of through-holes, a through-hole in a plurality of groups of through-holes is used for connecting the trachea, with to the inside gas outgoing of quiet shoulder cover, other through-holes in a plurality of groups of through-holes are used for insufflating the inside gas outgoing of quiet shoulder cover.
2. The static shoulder friction stir welding tool of claim 1 wherein said static shoulder sleeve comprises an outer sleeve cylindrical surface, a transition conical surface and a shoulder cylindrical surface, said plurality of sets of through holes comprising three sets of through holes, a first set of through holes being evenly disposed on said outer sleeve cylindrical surface, a second set of through holes being evenly disposed on said transition conical surface, and a third set of through holes being evenly disposed on said shoulder cylindrical surface.
3. A static shoulder friction stir welding tool as set forth in claim 2 wherein said gas tube is connected to one of said first or second set of through holes.
4. The static shoulder friction stir welding tool of claim 3, wherein the pin tool is provided with a step positioning surface for positioning the first bearing, a bearing mounting portion and a bearing fastener mounting portion, the first bearing, a bearing retainer ring and the second bearing are sequentially mounted on the bearing mounting portion, the first bearing and the second bearing are mounted in a back-to-back or face-to-face combination manner, and the bearing fastener is mounted on the bearing fastener mounting portion for limiting the first bearing and the second bearing.
5. The friction stir welding tool of claim 4 wherein said stationary shoulder sleeve has an inner locating surface disposed therein, said inner locating surface being in intimate contact with an end surface of said second bearing.
6. A static shoulder friction stir welding tool as set forth in claim 4 wherein said bearing mounting portion has a length no greater than the sum of the lengths of said first bearing, said retainer ring and said second bearing.
7. A static shoulder friction stir welding tool as set forth in claim 5 wherein said bearing fastener mounting portion is provided with a threaded formation for mounting a bearing fastener.
8. The static shoulder friction stir welding tool of claim 4 wherein said tool head further comprises a clamping handle for clamping said tool head, said clamping handle having a clamping surface for facilitating clamping of said tool head.
9. The static shoulder friction stir welding tool of claim 4, wherein the pin tool further comprises a shoulder for flash elimination and a pin tool disposed on the shoulder, the static shoulder is sleeved with a static shoulder hole, and the shoulder is inserted into the static shoulder hole.
10. The static shoulder friction stir welding tool of claim 9, wherein said static shoulder bore is in clearance fit with said shoulder, and the diameter difference between said static shoulder bore and said shoulder is 0.05-0.5 mm; the shaft shoulder penetrates through and extends out of the dead shaft shoulder hole by 0.1-0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921276377.4U CN211219135U (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 |
|---|---|---|---|
| CN201921276377.4U CN211219135U (en) | 2019-08-08 | 2019-08-08 | Static shaft shoulder friction stir welding tool |
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| CN211219135U true CN211219135U (en) | 2020-08-11 |
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| CN201921276377.4U Active CN211219135U (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 |
|---|---|---|---|---|
| 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 |
| CN113084330A (en) * | 2021-04-09 | 2021-07-09 | 郑州机械研究所有限公司 | Friction stir processing head |
-
2019
- 2019-08-08 CN CN201921276377.4U patent/CN211219135U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113084330A (en) * | 2021-04-09 | 2021-07-09 | 郑州机械研究所有限公司 | Friction stir processing head |
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Effective date of registration: 20220317 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. |