CN106624340A - Floating double-shaft shoulder friction stir welding tool and method for space welding - Google Patents
Floating double-shaft shoulder friction stir welding tool and method for space welding Download PDFInfo
- Publication number
- CN106624340A CN106624340A CN201611254129.0A CN201611254129A CN106624340A CN 106624340 A CN106624340 A CN 106624340A CN 201611254129 A CN201611254129 A CN 201611254129A CN 106624340 A CN106624340 A CN 106624340A
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- Prior art keywords
- stirring
- head
- sleeve
- limit spring
- connecting shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
-
- 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
- B23K20/1245—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 characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- 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
- B23K20/127—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 friction stir welding involving a mechanical connection
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a floating double-shaft shoulder friction stir welding tool and a method for space welding. The tool comprises a stirring head and a sleeve; at least two rolling bearings are arranged on a connecting shaft of the stirring head; each rolling bearing is connected with the connecting shaft of the stirring head through a locking bolt; U-shaped grooves in clearance fit connection with the rolling bearings are axially formed in the side wall of the sleeve; the length L2 of the U-shaped grooves is larger than the positioning distance L1 of the rolling bearings; an adjusting bolt in threaded connection with the connecting shaft of the stirring head is inserted in the top center of the sleeve; the adjusting bolt is sleeved with a first limiting spring and a second limiting spring; the first limiting spring is positioned in the sleeve; the second limiting spring is positioned out of the sleeve; and the adjusting bolt is screwed to change relative positions of the connecting shaft of the stirring head and the sleeve so as to realize adjustment of the pressing degree of the first limiting spring and the second limiting spring. The tool is simple and reliable in structure, easy to manufacture and excellent in use effect, and can effectively realize floating welding and space all-position welding.
Description
Technical field
The present invention relates to agitating friction welding equipment technical field, is specifically related to a kind of floating for space welding double
Shaft shoulder friction stir welding tool and method.
Background technology
Agitating friction weldering is a kind of solid phase joining technique, high with welding quality, and welding deformation is little, and non-environmental-pollution etc. shows
Work advantage, the technology is considered as the first-selected solder technology of the low-melting-point metals such as aluminium alloy.But because the stirring of conventional one-axis shoulder rubs
Wiping weldering needs to carry out welded piece rigid support using back backing plate, therefore cannot realize the welding of hollow part.To solve
The problem, double-shaft shoulder agitating friction weldering is welded using upper and lower two shaft shoulders, wherein, the lower shaft shoulder replaces back backing plate to quilt
Welder's part carries out being supported with weldering, so as to realize welding to hollow part.Meanwhile, it is the ripple for adapting to welded piece locus
It is dynamic, develop floating double-axis shoulder agitating friction welding technology.Stirring-head and sleeve are adopted float design by the technology, so that stirring
Mixing head can change in the direction on vertical workpiece surface with the fluctuation of workpiece space position.
However, also there are some problem demanding prompt solutions in existing floating double-axis shoulder agitating friction solder technology：（1）It is existing
The stirring-head and sleeve for having technology is coordinated using key with keyway, if notification number is one disclosed in the Chinese patent of CN204621349U
Kind of floating double-axis shoulder friction stir welding tool, stirring-head bears very big moment of torsion during agitating friction weldering, cause key and
The contact surface of keyway produces larger frictional force, hinders the relative slip of key and keyway, and then leads to not to realize floating type
Welding；（2）Also there is certain difficulty when space all-position welding is carried out in prior art, such as when horizontal position welding or vertical position welding is carried out,
, parallel to ground, before stirring-head incision welded piece, it is in the position parallel to ground direction in certainly for stirring-head, key and keyway
Cannot be positioned by sliding mode, workpiece is accurately cut to follow-up stirring-head carry out welding and cause difficulty；And entering
When row downhand welding or overhead welding, perpendicular to ground, due to Action of Gravity Field, stirring-head is before incision welded piece for stirring-head, key and keyway
The lower dead center freely slid downwards to keyway stroke is even come off, causes to continue downwards after stirring-head incision welded piece
Floating even cannot be welded.
The content of the invention
Present invention aims to above-mentioned existing problems and deficiency, there is provided it is a kind of it is simple and reliable for structure, easy to manufacture,
Using effect is good, can be effectively realized the floating double-axis shoulder agitating friction welding of floating type welding and space all-position welding
Instrument and its welding method.
The technical scheme is that what is be achieved in that：
Floating double-shaft shoulder friction stir welding tool for space welding of the present invention, is characterized in：Including stirring-head
And be movably socketed in the connecting shaft of stirring-head and the connecting shaft of its internal diameter and stirring-head external diameter identical sleeve, it is described
At least two rolling bearings, and each rolling bearing are provided with the connecting shaft of stirring-head axially spacedly respectively by a lock
Tight bolt is connected with the connecting shaft of stirring-head, offers vertically on the side wall of the sleeve and coordinates company with rolling bearing gap
Connect and its width and rolling bearing diameter identical U-lag, the orientation distance of length L2 of the U-lag more than rolling bearing
L1, and the top center of the sleeve movably places the regulating bolt being threadedly coupled with the connecting shaft of stirring-head, it is described
The first limit spring and the second limit spring are socketed with regulating bolt, first limit spring is located in sleeve and is placed in stirring
On the top surface of the connecting shaft for mixing head, second limit spring is located at outside sleeve and is placed in the top surface of sleeve and the spiral shell of regulating bolt
Between bolt cap, the is realized by turning the regulating bolt and making the connecting shaft of stirring-head and the relative position of sleeve change
The regulation of the compression degree of one limit spring and the second limit spring, and by the sleeve and friction stir welding machine when using
Main shaft connects and realizes the integral-rotation of soldering appliance.
Installation for the ease of rolling bearing is placed and rotates reliable, axially disposed in the connecting shaft of the stirring-head to have
Platform, described at least two rolling bearings are located on the platform and the length direction along platform is centrosymmetric distribution.
In order that the present invention has optimal using effect, the rolling bearing has been equally spaced five.
The welding method of the floating double-shaft shoulder friction stir welding tool for space welding of the present invention, its feature
It is to comprise the following steps：
Step one, determine soldering appliance size：According to welded piece surface location thickness direction maximum fluctuation apart from D, really
Determine length L2 of U-lag, it is ensured that length L2 of U-lag is more than the orientation distance L1 of rolling bearing and the maximum fluctuation of welded piece
Apart from D sums；
Step 2, selection spring：According to gross weight G of stirring-head, rolling bearing and clamping screw, select the first limit spring with
Second limit spring, makes ultimate load F1 of the first limit spring and ultimate load F2 of the second limit spring be all higher than G；
Step 3, the initial relative position for adjusting soldering appliance：Before being welded, soldering appliance is adjusted to welding posture, and
The connecting shaft of stirring-head and the relative position of sleeve are adjusted by regulating bolt, it is spacing with second so as to adjust the first limit spring
The impaction state of spring, makes the two elastic force balance each other with the self gravitation of stirring-head, and makes rolling bearing along the length side of U-lag
To the distribution that is centrosymmetric；
Step 4, welded：Start the main shaft of friction stir welding machine, while making soldering appliance follow main shaft integral-rotation,
Translated the joint to cut welded piece to be welded.
Further, in above-mentioned steps one, length L2 of U-lag is equal to the orientation distance L1 and two times of quilt of rolling bearing
The maximum fluctuation of welder's part is apart from D sums, i.e. L2=L1+2D.
Further, in above-mentioned steps two, the limit of ultimate load F1 of the first limit spring and the second limit spring is carried
Lotus F2 is equal to 2 times of G.
The present invention compared with prior art, with advantages below：
1st, the version of rolling bearing and U-lag rolling friction is present invention employs, compared to the slip between key and keyway
Friction, its frictional force is significantly reduced, and so as to be conducive to the relative slip of stirring-head and sleeve, have effectively achieved double-shaft shoulder stirring
The floating type welding of friction welding (FW)；
2nd, the present invention is affected by the gravity that two limit springs eliminate stirring-head, and spring can be passed through under stirring-head any attitude
Elastic force balance each other with stirring-head gravity, realize the relative position of fixed stirring-head and sleeve, and make stirring-head be located at floating row
The center of journey, is so not only convenient for stirring-head and accurately cuts welded piece, while ensureing that stirring-head farthest adapts to quilt
The positional fluctuation of welder's part, so as to be advantageously implemented space all-position welding.
Below in conjunction with the accompanying drawings the present invention is further illustrated.
Description of the drawings
Fig. 1 is the decomposition texture schematic diagram of soldering appliance of the present invention.
Fig. 2 is the main structure diagram of soldering appliance of the present invention.
Fig. 3 is cross-sectional views of the Fig. 2 in A-A directions.
Specific embodiment
As shown in Figure 1-Figure 3, the floating double-shaft shoulder friction stir welding tool for space welding of the present invention, bag
Include the stirring-head 1 with integrally formed connecting shaft 11 and be movably socketed in the connecting shaft 11 of stirring-head 1 and its internal diameter
With the external diameter identical sleeve 2 of the connecting shaft 11 of stirring-head 1, wherein in the connecting shaft 11 of the stirring-head 1 axially spacedly
At least two rolling bearings 3 are provided with, in the present embodiment, the rolling bearing 3 has been equally spaced vertically five,
And it is axially disposed in the connecting shaft 11 of the stirring-head 1 have a platform 12, five described rolling bearings 3 are located at the platform 12
Upper and along platform 12 length direction is centrosymmetric distribution, and is provided with platform 12 identical with the quantity of rolling bearing 3
Threaded connection hole 13, described five rolling bearings 3 are respectively by the threaded connection hole 13 1 on clamping screw 4 and platform 12
One correspondence connects and realizes being connected with the connecting shaft 11 of stirring-head 1.Additionally, rolling bearing 3 can also be according to actual use
Situation is set to two or three or four or six or other numbers.
Meanwhile, offer vertically on the side wall of the sleeve 2 and be connected with the gap of rolling bearing 3 and its width and rolling
The diameter identical U-lag 21 of dynamic bearing 3, as illustrated, the groove that the U-lag 21 takes the shape of the letter U for the two ends of strip, and institute
State the orientation distance L1 of length L2 more than rolling bearing 3 of U-lag 21.Meanwhile, the top center of the sleeve 2 offers through hole
22, regulating bolt 8 has movably been placed in the through hole 22, and also the top center of the connecting shaft 11 of the stirring-head 1 is opened
Screwed hole 14 is provided with, the one end in the insertion sleeve 2 of the regulating bolt 8 is threadedly coupled with the screwed hole 14.
Meanwhile, the first limit spring 5 and the second limit spring 6, the first spacing bullet are socketed with the regulating bolt 8
Spring 5 is located in sleeve 2 and is placed on the top surface of connecting shaft 11 of stirring-head 1, and it is outer simultaneously that second limit spring 6 is located at sleeve 2
It is placed between the nuts of the top surface of sleeve 2 and regulating bolt 8, in the present embodiment, in the regulating bolt 8 position is socketed with
Pad 7 at nuts medial surface, now, the second limit spring 6 is located between the top surface of sleeve 2 and pad 7.Welding
When, the is realized by turning the regulating bolt 8 and making the connecting shaft 11 of stirring-head 1 and the relative position of sleeve 2 change
The regulation of the compression degree of one limit spring 5 and the second limit spring 6.
And, when using, soldering appliance is connected with the main shaft of friction stir welding machine by the sleeve 2, so that
Soldering appliance with friction stir welding machine main shaft integral-rotation.
The method welded using the soldering appliance of said structure, is comprised the following steps：
Step one, determine soldering appliance size：According to welded piece surface location thickness direction maximum fluctuation apart from D, really
Determine length L2 of U-lag 21, it is ensured that length L2 of U-lag 21 is more than the orientation distance L1 of rolling bearing 3 with welded piece most
Great fluctuation process is apart from D sums；Specifically, in the present embodiment, length L2 of U-lag 21 is equal to the orientation distance of rolling bearing 3
The maximum fluctuation of L1 and two times of welded piece is apart from D sums, i.e. L2=L1+2D；
Step 2, selection spring：According to gross weight G of stirring-head 1, rolling bearing 3 and clamping screw 4, the first spacing bullet is selected
The limit spring 6 of spring 5 and second, makes ultimate load F1 of the first limit spring 5 big with ultimate load F2 of the second limit spring 6
In G；Specifically, in the present embodiment, the ultimate load of ultimate load F1 of the first limit spring 5 and the second limit spring 6
F2 is equal to 2 times of G；
Step 3, the initial relative position for adjusting soldering appliance：Before being welded, soldering appliance is adjusted to welding posture, and
The relative position of connecting shaft 11 and the sleeve 2 of stirring-head 1 is adjusted by regulating bolt 8, so as to adjust the first limit spring 5 and the
The impaction state of two limit springs 6, makes the two elastic force balance each other with the self gravitation of stirring-head 1, and makes rolling bearing 3 along U-shaped
The length direction of groove 21 is centrosymmetric distribution；
Step 4, welded：Start the main shaft of friction stir welding machine, while making soldering appliance follow main shaft integral-rotation,
Translated the joint to cut welded piece to be welded.
The present invention is described by embodiment, but is not limited the invention, with reference to description of the invention, institute
Other changes of disclosed embodiment, such as the professional person of this area is readily apparent that, such change should belong to
Within the scope of the claims in the present invention are limited.
Claims (6)
1. it is a kind of for space welding floating double-shaft shoulder friction stir welding tool, it is characterised in that：Including stirring-head（1）And
Movably it is socketed in stirring-head（1）Connecting shaft（11）Upper and its internal diameter and stirring-head（1）Connecting shaft（11）External diameter phase
Same sleeve（2）, the stirring-head（1）Connecting shaft（11）It is upper to be provided with least two rolling bearings axially spacedly（3）,
And each rolling bearing（3）Respectively pass through a clamping screw（4）With stirring-head（1）Connecting shaft（11）It is connected, the sleeve
（2）Side wall on offer vertically and rolling bearing（3）Gap is connected and its width and rolling bearing（3）Diameter phase
Same U-lag（21）, the U-lag（21）Length L2 be more than rolling bearing（3）Orientation distance L1, and the sleeve（2）
Top center movably placed and stirring-head（1）Connecting shaft（11）The regulating bolt of threaded connection（8）, the regulation
Bolt（8）On be socketed with the first limit spring（5）With the second limit spring（6）, first limit spring（5）Positioned at sleeve
（2）Inside it is placed in stirring-head（1）Connecting shaft（11）Top surface on, second limit spring（6）Positioned at sleeve（2）Outer juxtaposition
In sleeve（2）Top surface and regulating bolt（8）Nuts between, by turning the regulating bolt（8）Make stirring-head（1）'s
Connecting shaft（11）With sleeve（2）Relative position change and realize the first limit spring（5）With the second limit spring（6）'s
The regulation of compression degree, and pass through the sleeve when using（2）It is connected with the main shaft of friction stir welding machine and realizes soldering appliance
Integral-rotation.
2. it is according to claim 1 for space welding floating double-shaft shoulder friction stir welding tool, it is characterised in that：
The stirring-head（1）Connecting shaft（11）It is above axially disposed to have platform（12）, described at least two rolling bearings（3）It is located at
The platform（12）Above and along platform（12）Length direction be centrosymmetric distribution.
3. it is according to claim 1 for space welding floating double-shaft shoulder friction stir welding tool, it is characterised in that：
The rolling bearing（3）It has been equally spaced five.
4. it is a kind of using as described in above-mentioned any claim soldering appliance welding method, it is characterised in that including following step
Suddenly：
Step one, determine soldering appliance size：According to welded piece surface location thickness direction maximum fluctuation apart from D, really
Determine U-lag（21）Length L2, it is ensured that U-lag（21）Length L2 be more than rolling bearing（3）Orientation distance L1 with by welder
The maximum fluctuation of part is apart from D sums；
Step 2, selection spring：According to stirring-head（1）, rolling bearing（3）And clamping screw（4）Gross weight G, select first
Limit spring（5）With the second limit spring（6）, make the first limit spring（5）Ultimate load F1 and the second limit spring（6）'s
Ultimate load F2 is all higher than G；
Step 3, the initial relative position for adjusting soldering appliance：Before being welded, soldering appliance is adjusted to welding posture, and
By regulating bolt（8）Adjust stirring-head（1）Connecting shaft（11）With sleeve（2）Relative position, it is spacing so as to adjust first
Spring（5）With the second limit spring（6）Impaction state, make the two elastic force and stirring-head（1）Self gravitation balance each other, and make
Rolling bearing（3）Along U-lag（21）Length direction be centrosymmetric distribution；
Step 4, welded：Start the main shaft of friction stir welding machine, while making soldering appliance follow main shaft integral-rotation,
Translated the joint to cut welded piece to be welded.
5. welding method according to claim 4, it is characterised in that：In above-mentioned steps one, U-lag（21）Length L2 etc.
In rolling bearing（3）Orientation distance L1 and two times of welded piece maximum fluctuation apart from D sums, i.e. L2=L1+2D.
6. welding method according to claim 4, it is characterised in that：In above-mentioned steps two, the first limit spring（5）Pole
Limit for tonnage lotus F1 and the second limit spring（6）Ultimate load F2 be equal to 2 times of G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254129.0A CN106624340B (en) | 2016-12-30 | 2016-12-30 | Floating double-shaft-shoulder friction stir welding tool and method for space welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611254129.0A CN106624340B (en) | 2016-12-30 | 2016-12-30 | Floating double-shaft-shoulder friction stir welding tool and method for space welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106624340A true CN106624340A (en) | 2017-05-10 |
| CN106624340B CN106624340B (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611254129.0A Active CN106624340B (en) | 2016-12-30 | 2016-12-30 | Floating double-shaft-shoulder friction stir welding tool and method for space welding |
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| Country | Link |
|---|---|
| CN (1) | CN106624340B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175401A (en) * | 2017-05-17 | 2017-09-19 | 北京世佳博科技发展有限公司 | Improve the flexible friction stir welding tool and welding method of production efficiency |
| CN107470773A (en) * | 2017-07-25 | 2017-12-15 | 北京赛福斯特技术有限公司 | A kind of length-adjustable friction stir weld device of mixing needle and welding method |
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| CN204771124U (en) * | 2015-06-01 | 2015-11-18 | 中山市富维五金制品有限公司 | Stirring soldered connection |
| CN105921876A (en) * | 2016-06-20 | 2016-09-07 | 江苏科技大学 | Friction stirring welding tool feeding back press-in depth and torque |
| CN206500765U (en) * | 2016-12-30 | 2017-09-19 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of floating double-shaft shoulder friction stir welding tool welded for space |
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| JP2004130326A (en) * | 2002-10-08 | 2004-04-30 | Mitsubishi Heavy Ind Ltd | Friction stirring and joining device and friction stirring and joining method |
| CN101982284A (en) * | 2010-11-04 | 2011-03-02 | 哈尔滨工业大学 | Repair welding method and welding tool of stirring friction plug for friction preheating of telescopic shaft shoulder |
| JP2013202630A (en) * | 2012-03-27 | 2013-10-07 | Ihi Corp | Friction stir welding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107175401A (en) * | 2017-05-17 | 2017-09-19 | 北京世佳博科技发展有限公司 | Improve the flexible friction stir welding tool and welding method of production efficiency |
| CN107175401B (en) * | 2017-05-17 | 2019-09-20 | 北京世佳博科技发展有限公司 | Improve the flexible friction stir welding tool and welding method of production efficiency |
| CN107470773A (en) * | 2017-07-25 | 2017-12-15 | 北京赛福斯特技术有限公司 | A kind of length-adjustable friction stir weld device of mixing needle and welding method |
| CN107470773B (en) * | 2017-07-25 | 2019-07-19 | 北京赛福斯特技术有限公司 | A kind of length-adjustable friction stir weld device of mixing needle and welding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106624340B (en) | 2022-08-26 |
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Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Applicant after: China Uzbekistan Welding Research Institute Guangdong Academy of Sciences Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Applicant before: Guangdong Welding Institute (China-Ukraine E.O. Paton Institute of Welding) |
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