CN109093245A - A kind of double drive differential friction stir welding tools - Google Patents
A kind of double drive differential friction stir welding tools Download PDFInfo
- Publication number
- CN109093245A CN109093245A CN201811085361.5A CN201811085361A CN109093245A CN 109093245 A CN109093245 A CN 109093245A CN 201811085361 A CN201811085361 A CN 201811085361A CN 109093245 A CN109093245 A CN 109093245A
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- China
- Prior art keywords
- shaft shoulder
- mixing needle
- hole
- sealing structure
- movable sealing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention relates to a kind of double drive differential friction stir welding tools.The tool includes mixing needle and the shaft shoulder, the mixing needle is rotatably set in the central through hole of the shaft shoulder, and, the end of the mixing needle exceeds the shaft shoulder end, it is characterized in that, place is arranged in the mixing needle and the shaft shoulder end, it is successively arranged the two poles of the earth movable sealing structure and discharging structure from top to bottom, the two poles of the earth movable sealing structure includes the labyrinth type movable sealing structure and screw thread movable sealing structure set gradually from top to bottom, the discharging structure is located at the top of the screw thread movable sealing structure, for the stirring-head and the welding material folding in the gap of the shaft shoulder to be discharged.By the two poles of the earth movable sealing structure and discharge through-hole, solve the problems, such as that the welding material in existing stir friction welding process is easy to enter soldering appliance by gap and accumulate.
Description
Technical field
The present invention relates to Friction Stir Welding technical fields, more particularly to a kind of double drive differential Friction Stir Welding works
Tool.
Background technique
Agitating friction weldering is a kind of solid phase joining technique, and principle is made by mixing needle and friction of workpiece heat to be welded
Weld material is plasticized and with mixing needle rotational flow.Under the action of mixing needle shaft shoulder forging force, weld seam is formed.Currently, it stirs
Friction welding technique has been widely used for aviation, space flight, ship and track transportation industry.With the expansion of application surface, improve
Throat thickness is that the technology continues the significant challenge extended to other industries.As thickness of workpiece to be welded increases, needle end part is stirred
It is highlighted with the unbalanced problem of root heat input.The heat input source of agitating friction weldering is mainly from two aspects: friction heat production and modeling
Property deformation heat production.Friction heat production depends primarily on the revolving speed of mixing needle.The raising of revolving speed increases stirring needle end part heat input, and stirs
It mixes crown portion and is connected with the shaft shoulder and but cause heat input excessive, cause welding defect.To solve to weld problems of excessive heat, double drive differentials are stirred
Friction welding tool is mixed to be studied and develop.
Existing double differential friction stir welding tools that drive are that the shaft shoulder and mixing needle are designed as separate structure.Stirring can be achieved
Needle high speed rotation, shaft shoulder low speed rotation keep thick plates heat input balanced.It is needed since structure designs, the shaft shoulder is deposited with mixing needle
In gap.Mainly cause following two problem in gap: 1, in the welding process, plasticity welding material is easy to enter weldering by gap
Inside bonding tool and accumulate.Material is persistently accumulated, main shaft locking when causing welding distance limited or serious.2, it is completed in welding
Afterwards, material folding is welded in gap makes mixing needle and shaft shoulder adhesion and can not dismantle.
Therefore, to solve the above problems, inventor providing a kind of double drive differential friction stir welding tools.
Summary of the invention
The embodiment of the invention provides a kind of double drive differential friction stir welding tools, pass through the two poles of the earth movable sealing structure and row
Material through hole, solve the welding material in existing stir friction welding process be easy by gap enter soldering appliance and accumulation
Problem.
The embodiment of the present invention proposes a kind of double drive differential friction stir welding tools, which includes mixing needle and axis
Shoulder, the mixing needle are rotatably set in the central through hole of the shaft shoulder, also, the end of the mixing needle is beyond described
Shaft shoulder end, which is characterized in that be arranged place in the mixing needle and the shaft shoulder end, be successively arranged the two poles of the earth from top to bottom and move
Sealing structure and discharging structure, the two poles of the earth movable sealing structure include the labyrinth type movable sealing structure that sets gradually from top to bottom and
Screw thread movable sealing structure, the discharging structure are located at the top of the screw thread movable sealing structure, are used for the stirring-head and institute
The welding material folding stated in the gap of the shaft shoulder discharges.
It preferably, is stepped step fit clearance at the central through hole cooperation of the mixing needle and the shaft shoulder end,
The labyrinth type movable sealing structure and the screw thread movable sealing structure form the stepped step fit clearance, for preventing weldering
Material folding is connect to enter from fit clearance.
Preferably, inner wall of the central through hole of the shaft shoulder in end is the shaft shoulder flange of annular, and the shaft shoulder is convex
The outer surface clearance fit of edge and the mixing needle forms the labyrinth seal structure.
It preferably, is the mixing needle flange of annular in the periphery of the mixing needle at the shaft shoulder flange cooperation,
The outer surface of the mixing needle flange is equipped with screw thread.
Preferably, annular deep gouge is equipped in the periphery of the mixing needle of the mixing needle flange top, on the shaft shoulder
The wall thickness direction opposite with the annular deep gouge is provided with one or more discharge through-hole, for that will weld material folding discharge
It goes.
Preferably, the discharge through-hole includes the stepped hole being made of inner hole and exit orifice, and the aperture of the inner hole is less than institute
State the aperture of exit orifice.
Preferably, the mixing needle is pyramidal structure, and correspondingly, the central through hole of the shaft shoulder is conical through-hole, described
The mixing needle of pyramidal structure and the conical through-hole use concentric gap fit system.
Preferably, the periphery of the pyramidal structure of the stirring needle end part beyond the shaft shoulder end is equipped with screw thread.
Preferably, the revolving speed of the mixing needle is greater than the revolving speed of the shaft shoulder.
To sum up, the present invention devises the two poles of the earth movable sealing structure and discharge through-hole structure, and the two poles of the earth movable sealing structure can will weld
It connects material folding to be blocked in except tool, the welding material folding in gap can be discharged for discharge through-hole structure, solve existing double drive and stir
In friction welding process, welding material folding is easy by inside the entering tool of gap and the problem of accumulation, using tool of the invention,
Welding apart from unrestricted, mixing needle and the shaft shoulder will not adhesion, it is easily disassembled, significantly improve the efficiency of Friction Stir Welding.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the double schematic cross-sectional views for driving differential friction stir welding tool of one kind of the embodiment of the present invention.
1- labyrinth type movable sealing structure；2- screw thread movable sealing structure；3- annular deep gouge；4- discharge through-hole；
10- mixing needle；；The 20- shaft shoulder.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment it is detailed
Thin description and attached drawing cannot be used to limit the scope of the invention for illustratively illustrating the principle of the present invention, i.e., of the invention
It is not limited to described embodiment, covers part, component and connection type under the premise of without departing from the spirit of the present invention
Any modification, replacement and improvement.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to accompanying drawings and in conjunction with the embodiments.
Fig. 1 is the double schematic cross-sectional views for driving differential friction stir welding tool of one kind of the embodiment of the present invention.Such as Fig. 1 institute
Show, which includes mixing needle 10 and the shaft shoulder 20, and mixing needle 10 is rotatably set in the central through hole of the shaft shoulder 20, and
And the end of mixing needle 10 exceeds the end of the shaft shoulder 20, is arranged place in the end of mixing needle 10 and the shaft shoulder 20, from top to bottom according to
It is secondary to be equipped with the two poles of the earth movable sealing structure (1,2) and discharging structure (3,4), wherein the two poles of the earth movable sealing structure is including from top to bottom successively
The labyrinth type movable sealing structure 1 and screw thread movable sealing structure 2 of setting, discharging structure (3,4) are located at the upper of screw thread movable sealing structure 2
Portion, for discharging mixing needle 10 and the welding material folding in the gap of the shaft shoulder 20.
It wherein, is stepped step fit clearance, labyrinth type at the central through hole cooperation of mixing needle 10 and 20 end of the shaft shoulder
The step type step fit clearance is collectively formed in movable sealing structure 1 and screw thread movable sealing structure 2, for preventing welding material folding from matching
It closes in gap and enters soldering appliance.
Specifically, inner wall of the central through hole of the shaft shoulder 20 in end is the shaft shoulder flange of annular, the shaft shoulder flange and stirring
The outer surface clearance fit of needle 10 forms labyrinth type movable sealing structure 1.Compared to straight barrel type gap, labyrinth type dynamic sealing knot herein
Structure can reduce the percent of pass of welding material folding.
In addition, the periphery of the mixing needle 10 at the cooperation of shaft shoulder flange is the mixing needle flange of annular, the mixing needle is convex
The outer surface of edge is equipped with screw thread, and with the smooth surface central through hole of screwed mixing needle flange and the shaft shoulder, it is dynamic to form screw thread
Sealing structure.The periphery of the mixing needle 10 of flange top is equipped with annular deep gouge 3, the wall thickness opposite with annular deep gouge 3 on the shaft shoulder 20
Direction is provided with one or more discharge through-hole 4, discharges for that will weld material folding.Annular deep gouge 3 can reduce stirring
The additional heat that needle 10 and shaft shoulder friction generate, discharge through-hole 4 can send the welding material folding in gap, prevent welding material folding
Travel further into tool interior.
By the differential speed rotation of the shaft shoulder 20 and mixing needle 10, the mixing needle flange of screw thread is logical relative to the smooth surface center of the shaft shoulder
Relative motion occurs for hole.Meanwhile when the Friction Stir Welding of the present embodiment uses direction of rotation counterclockwise, mixing needle can be made convex
Screw thread on edge generates repulsion power to welding material folding.When welding, which can reduce welding material folding through-rate.Welding
After the completion, which can also release material folding existing in gap, play the role of separating the shaft shoulder 20 and mixing needle 10.With weldering
It connects the thrust that forging force generates welding material folding to compare, the two poles of the earth movable sealing structure can not prevent completely welding material folding entering tool
It is internal.For the material folding inside entering tool, the main effect using welding material folding itself thrust is by it by arranging in discharge through-hole 4
Out.
As a kind of preferred embodiment, discharge through-hole 4 includes the stepped hole being made of inner hole and exit orifice, wherein inner hole
Aperture is less than the aperture of exit orifice.The small advantage of inner hole is to can reduce discharge resistance, leads to extra material folding by discharge as early as possible
Hole 4 is discharged, without making material folding continue through the inside that gap enters mixing needle 10 and the shaft shoulder 20.Exit orifice greatly then can be by the folder of discharge
Material contacts and the fracture that is hardened with air quickly, be deposited in the material folding of discharge will not in relief hole, to will not influence next time
Discharge when welding.
As another alternative embodiment, mixing needle 10 is pyramidal structure, and correspondingly, the central through hole of the shaft shoulder 20 is taper
The mixing needle of through-hole, the pyramidal structure is assembled with conical through-hole using concentric gap fit system.Make mixing needle 10 in axis
It is moved along axial a certain range in the central through hole of shoulder 20, guarantees that mixing needle 10 and the shaft shoulder 20 are relatively rotatable to each other, also, stir
The revolving speed for mixing needle 10 is greater than the revolving speed of the shaft shoulder 20, to realize double technological operations for driving differential Friction Stir Welding.
As another alternative embodiment, the end of mixing needle 10 is equipped with beyond the periphery of the pyramidal structure of 20 end of the shaft shoulder
Screw thread.
To sum up, double drive differential friction stir welding tools of the invention are logical by designing the two poles of the earth movable sealing structure and discharge
Overwhelming majority welding material folding is blocked in except mixing needle and shaft shoulder gap, then using discharge through-hole knot by pore structure first
Structure discharges welding material folding a small amount of in gap, to solve existing double friction stir welding tools that drive in welding process
In, the problem of being easy to make to weld material folding by gap entering tool inside and accumulate, not using tool weld distance of the invention
Limited, welding significantly improves welding efficiency, and stirs to move back and will not lead to the problem of adhesion, convenient disassembly with the shaft shoulder.
It should be clear that all the embodiments in this specification are described in a progressive manner, each embodiment it
Between the same or similar part may refer to each other, the highlights of each of the examples are it is different from other embodiments it
Place.The invention is not limited to particular step described above and shown in figure and structures.Also, for brevity,
Here the detailed description to known method technology is omitted.
The above description is only an example of the present application, is not restricted to the application.The scope of the present invention is not being departed from
In the case where to those skilled in the art, various changes and changes are possible in this application.It is all in spirit herein and
Any modification, equivalent replacement, improvement and so within principle, should be included within the scope of claims hereof.
Claims (9)
1. a kind of double drive differential friction stir welding tools, including mixing needle and the shaft shoulder, the mixing needle are rotatably set in
In the central through hole of the shaft shoulder, also, the end of the mixing needle exceeds the shaft shoulder end, which is characterized in that described
Mixing needle and the shaft shoulder end are arranged place, are successively arranged the two poles of the earth movable sealing structure and discharging structure from top to bottom, and described two
Pole movable sealing structure includes the labyrinth type movable sealing structure and screw thread movable sealing structure set gradually from top to bottom, the discharge knot
Structure is located at the top of the screw thread movable sealing structure, for arranging the welding material folding in the gap of the stirring-head and the shaft shoulder
It goes out.
Double drive differential friction stir welding tool 2. according to claim 1, which is characterized in that the mixing needle with it is described
It is stepped step fit clearance at the central through hole cooperation of shaft shoulder end, the labyrinth type movable sealing structure and the screw thread are dynamic
Sealing structure forms the stepped step fit clearance, for preventing welding material folding from entering from fit clearance.
3. double drive differential friction stir welding tools according to claim 2, which is characterized in that the center of the shaft shoulder is logical
Inner wall of the hole in end is the shaft shoulder flange of annular, the outer surface clearance fit formation institute of the shaft shoulder flange and the mixing needle
State labyrinth seal structure.
4. double drive differential friction stir welding tools according to claim 3, which is characterized in that convex close to the shaft shoulder
The periphery of the mixing needle at edge cooperation is the mixing needle flange of annular, and the outer surface of the mixing needle flange is equipped with screw thread.
5. double drive differential friction stir welding tools according to claim 4, which is characterized in that in the mixing needle flange
The periphery of the mixing needle on top is equipped with annular deep gouge, and the wall thickness direction opposite with the annular deep gouge is provided on the shaft shoulder
One or more discharge through-hole is discharged for that will weld material folding.
6. double differential friction stir welding tool is driven according to claim 5, which is characterized in that the discharge through-hole includes
The stepped hole being made of inner hole and exit orifice, the aperture of the inner hole are less than the aperture of the exit orifice.
7. double drive differential friction stir welding tools according to claim 1-6, which is characterized in that the stirring
Needle is pyramidal structure, and correspondingly, the central through hole of the shaft shoulder is conical through-hole, the mixing needle of the pyramidal structure and the cone
Shape through-hole uses concentric gap fit system.
8. double drive differential friction stir welding tools according to claim 7, which is characterized in that the stirring needle end part is super
The periphery of the pyramidal structure of the shaft shoulder end is equipped with screw thread out.
9. double drive differential friction stir welding tools according to claim 7, which is characterized in that the revolving speed of the mixing needle
Greater than the revolving speed of the shaft shoulder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085361.5A CN109093245B (en) | 2018-09-18 | 2018-09-18 | Double-drive differential stirring friction welding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085361.5A CN109093245B (en) | 2018-09-18 | 2018-09-18 | Double-drive differential stirring friction welding tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109093245A true CN109093245A (en) | 2018-12-28 |
| CN109093245B CN109093245B (en) | 2020-11-13 |
Family
ID=64866485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811085361.5A Active CN109093245B (en) | 2018-09-18 | 2018-09-18 | Double-drive differential stirring friction welding tool |
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| Country | Link |
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| CN (1) | CN109093245B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111922505A (en) * | 2020-07-27 | 2020-11-13 | 昆山哈工万洲焊接研究院有限公司 | Friction stir welding tool and device |
| CN112453682A (en) * | 2020-11-17 | 2021-03-09 | 南京雷尔伟新技术股份有限公司 | Friction stir welding process for aluminum alloy subway body side wall static shaft shoulder |
| CN112548315A (en) * | 2020-12-02 | 2021-03-26 | 昆山万洲特种焊接有限公司 | Full-isolation type static shaft shoulder welding tool |
| CN113843496A (en) * | 2020-06-26 | 2021-12-28 | 本田技研工业株式会社 | Friction stir welding device and friction stir welding method |
| CN114555274A (en) * | 2019-10-08 | 2022-05-27 | 山崎马扎克公司 | Stirring pin, tool for friction stir welding, and machine tool |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114555274A (en) * | 2019-10-08 | 2022-05-27 | 山崎马扎克公司 | Stirring pin, tool for friction stir welding, and machine tool |
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| JP7432453B2 (en) | 2020-06-26 | 2024-02-16 | 本田技研工業株式会社 | Friction stir welding equipment and friction stir welding method |
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| CN111922505B (en) * | 2020-07-27 | 2022-01-18 | 昆山哈工万洲焊接研究院有限公司 | Friction stir welding tool and device |
| CN112453682A (en) * | 2020-11-17 | 2021-03-09 | 南京雷尔伟新技术股份有限公司 | Friction stir welding process for aluminum alloy subway body side wall static shaft shoulder |
| CN112548315A (en) * | 2020-12-02 | 2021-03-26 | 昆山万洲特种焊接有限公司 | Full-isolation type static shaft shoulder welding tool |
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| CN109093245B (en) | 2020-11-13 |
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