CN103801817A - Double-speed rotating stirring tool for thick plate welding - Google Patents
Double-speed rotating stirring tool for thick plate welding Download PDFInfo
- Publication number
- CN103801817A CN103801817A CN201310055136.8A CN201310055136A CN103801817A CN 103801817 A CN103801817 A CN 103801817A CN 201310055136 A CN201310055136 A CN 201310055136A CN 103801817 A CN103801817 A CN 103801817A
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- Prior art keywords
- shaft shoulder
- mixing needle
- stirring tool
- double
- reducing sleeve
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- 238000003756 stirring Methods 0.000 title claims abstract description 48
- 238000003466 welding Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a double-speed rotating stirring tool for thick plate welding. The tool comprises a shaft shoulder adapter sleeve, a stirring pin adapter sleeve, a shaft shoulder, a stirring pin, a bearing and an adjusting block, wherein the shaft shoulder is connected with a shaft shoulder spindle through the shaft shoulder adapter sleeve and rotates along with the shaft shoulder spindle, the stirring pin is connected with a stirring pin spindle through the stirring pin adapter sleeve and rotates along with the stirring pin spindle, the shaft shoulder spindle and the stirring pin spindle form a concentric rotation kinematic pair, and meanwhile, an unique dynamic seal and a structure for guaranteeing good concentricity under a large-load working condition are designed. During welding, the shaft shoulder and the stirring pin are driven independently and can be set at different rotational speeds. By means of the tool, the problem of inconsistent weld joint quality caused by overlarge temperature gradients in the thickness direction when thick plates are welded by traditional stirring tools are solved.
Description
Technical field
The present invention relates to a kind of friction welding technology, more particularly, relate to a kind of thick plates stirring tool.
Background technology
Agitating friction welding technology is a kind of non-melt welding method.The method is utilized a kind of special tool(s)---stirring tool, High Rotation Speed also inserts and treats in weldment, stirring tool with treat that weldment produces a large amount of frictional heats, start to advance during in mecystasis until metal, in welding process, mecystasis metal is caused its rear by stirring-head, forges and form tight weld under the pressure of top.Agitating friction welding technology is now widely applied in special process field, and has unique advantage at the large thick aluminium/magnesium/copper coin welding field of welding.
The instrument that stirring tool uses as friction stir welding is the core technology of agitating friction welding technology.The end of stirring tool is the mixing needle that diameter is less, is deep into the depths of weldment, with weldment Surface Contact produce frictional heat be stirring tool shaft shoulder part.As shown in Figure 1, mixing needle and the shaft shoulder are as a whole for traditional stirring tool, jointly rotation.The thermal source of agitating friction welding is mainly derived from the frictional heat of the shaft shoulder, mixing needle and material, and due to the normally several times of mixing needle diameter of shaft shoulder diameter, therefore most heat all comes from the frictional heat of the shaft shoulder.For the welding heat source of pin portion, on the one hand from the frictional heat of mixing needle and material, another part conducts in the heat of thickness direction from the frictional heat of the shaft shoulder.While using traditional stirring tool welding slab, because thickness of slab is large, the frictional heat of the shaft shoulder and mother metal is difficult to be delivered to mixing needle bottom, and herein due to little with the contact area of mother metal, radiating condition is best herein, caused so often heat production deficiency of mixing needle bottom, base material plasticity deficiency, easily causes tunnel type defect.In this case, can only improve by increasing the rotary speed of stirring tool the quantity of heat production of weld seam bottom.While improving rotary speed, the large area friction of the shaft shoulder and mother metal often causes that surface is overheated, and pin portion is because heat production deficiency easily causes tunnel type defect.If reduce face of weld heat production by reducing shaft shoulder area, there will be again the welding shaft shoulder cannot restrain material completely, cause the defects such as surface grooves, overlap be excessive.So traditional stirring tool in welding when slab, exists on thickness direction thermograde large, the inhomogenous problem of thickness direction welding quality.
Summary of the invention
The present invention is directed to the technical problem existing in above-mentioned prior art, a kind of thick plates double-speed rotating stirring tool is provided, there is good axiality, rigidity, the little feature of frictional dissipation, solved traditional stirring tool welding when slab on thickness direction thermograde large, the inhomogenous problem of thickness direction welding quality.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of thick plates double-speed rotating stirring tool, based on Dual Drive agitating friction welder, comprise the shaft shoulder and mixing needle, also comprise shaft shoulder reducing sleeve and mixing needle reducing sleeve, wherein, the shaft shoulder is connected with shaft shoulder main shaft by shaft shoulder reducing sleeve, jointly rotation, mixing needle is connected with mixing needle main shaft by mixing needle reducing sleeve, jointly rotation; Shaft shoulder main shaft and mixing needle main shaft form Concentric rotation kinematic pair; Between the described shaft shoulder and mixing needle, be provided with movable sealing structure, between shaft shoulder main shaft and the Concentric rotation kinematic pair of mixing needle main shaft formation, be provided with bearing or bearing combination, to guarantee good concentricity, when welding, the described shaft shoulder is from mixing needle drive and can set different rotary speeies, when welding, the shaft shoulder is from mixing needle drive and can set different rotary speeies.
Described shaft shoulder reducing sleeve top is provided with symmetrical keyway arrangements, is fastenedly connected, by key transmission with shaft shoulder main shaft; Bottom is provided with shaft shoulder installing hole and bearing mounting hole.
Described mixing needle reducing sleeve top is provided with symmetrical keyway arrangements, is fastenedly connected, by key transmission with mixing needle main shaft; Middle part is radially provided with two symmetrical row's securing member installing holes, for clamping mixing needle; Bottom is provided with symmetrical axial keyway and mixing needle installing hole.
Described mixing needle top is retained part, and this part is processed symmetrical keyway, is fastenedly connected, by keyway arrangements transmission with mixing needle reducing sleeve; Mixing needle root has designed the small-sized shaft shoulder with annular groove, provides space for material flows, and reduces the possibility that plastic material enters gap.
Described shaft shoulder top is connected with shaft shoulder reducing sleeve by securing member and key, jointly rotation; Wei Nei concave plane, shaft shoulder bottom, has designed annular groove, promotes material to flow.
Described movable sealing structure, when object is to prevent from welding, material enters the gap of mixing needle and the shaft shoulder.The gap of mixing needle and the shaft shoulder is set to 0.25mm, and mixing needle cylindrical in gap arranges the screw thread identical with pin portion thread rotary orientation, when welding, to the material of gap entrance with downforce, the effect of formation movable sealing.
Under described large load working condition, guarantee the structure of good concentricity, object is to reduce the frictional dissipation between rotary motion pair, guarantees structural safety, the stability of stirring tool.When welding slab, stirring tool is subject to very large advance drag and upset force, according to bearing load carrying capacity, selects rational bearing and bearing combination to be arranged between mixing needle and shaft shoulder rotary body, guarantees on the one hand good concentricity, reduces on the one hand frictional dissipation.
The double-speed rotating stirring tool of Dual Drive agitating friction welder of the present invention, owing to adopting above-mentioned technical scheme, therefore has good axiality, rigidity, the little feature of frictional dissipation, has obtained following beneficial effect:
1, by realizing the Split type structure of the shaft shoulder and mixing needle double-speed rotating, improve the heat production ratio of the stirring tool shaft shoulder and mixing needle, reduced the thermograde of throat thickness direction, improved the homogeneity of throat depth direction quality.
2, design movable sealing structure, be provided with the screw thread identical with pin portion thread rotary orientation in mixing needle and the mixing needle cylindrical at pivot clearance place.When welding, by the plastic material of gap entrance with downforce, prevent plastic material enter gap cause mixing needle and the shaft shoulder stuck.
3, selected and met the bearing of load bearing requirements or bearing combination is installed between relative rotary motion pair, guaranteed stirring tool axiality, avoided frictional dissipation that disalignment causes and the inefficacy of structure.
Accompanying drawing explanation
Fig. 1 is traditional stirring tool structural representation;
Fig. 2 is the structural representation of double-speed rotating stirring tool of the present invention;
Fig. 3 is the axial of shaft shoulder reducing sleeve of the present invention;
Fig. 4 is the axial upward view of shaft shoulder reducing sleeve of the present invention;
Fig. 5 is the cutaway view of shaft shoulder reducing sleeve of the present invention;
Fig. 6 is the cutaway view of the shaft shoulder of the present invention;
Fig. 7 is the cutaway view of mixing needle adapter of the present invention;
Fig. 8 is the cutaway view of mixing needle of the present invention;
Fig. 9 is the axial view of mixing needle of the present invention.
The specific embodiment
Below embodiments of the invention are elaborated: the present embodiment is implemented under take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Implement below in conjunction with accompanying drawing explanation double-speed rotating stirring tool of the present invention.
Fig. 1 is traditional stirring tool schematic diagram, and mixing needle and the shaft shoulder are as a whole, jointly rotation.
Fig. 2 is the structural representation of double-speed rotating stirring tool of the present invention, this device comprises: shaft shoulder reducing sleeve (1), mixing needle reducing sleeve (2), the shaft shoulder (3), mixing needle (4), bearing (5) and adjustment block (6), this invention is based on Dual Drive agitating friction welder, and shaft shoulder main shaft and mixing needle main shaft are driven by motor independently respectively.The shaft shoulder (3) is connected with shaft shoulder main shaft by shaft shoulder reducing sleeve (1), rotation jointly, and mixing needle (4) is connected with mixing needle main shaft by mixing needle reducing sleeve (2), jointly rotation; Shaft shoulder main shaft and mixing needle main shaft form Concentric rotation kinematic pair; Design the structure that guarantees good concentricity under unique movable sealing and large load working condition; When welding, the shaft shoulder (3) is from mixing needle (4) drive and can set different rotary speeies.
Fig. 3,4,5 is respectively axial view and the cutaway view of shaft shoulder reducing sleeve (1), and top is fastened on shaft shoulder main shaft by securing member, and is provided with symmetrical positioning key (7) location is installed.Center, lower surface, is axially provided with bearing mounting hole (10), and bearing top circle is coaxially arranged in shaft shoulder reducing sleeve (1) by bearing mounting hole (10), adopts interference fits; Lower surface arranges female securing member installing hole and symmetrical two keyways (8); The center, lower surface of shaft shoulder reducing sleeve (1), is axially provided with a shaft shoulder installing hole (11), and the top of the shaft shoulder (3) is coaxially arranged on the lower end head of shaft shoulder reducing sleeve by shaft shoulder installing hole, and by securing member, the shaft shoulder is installed.The symmetrical both sides of shaft shoulder reducing sleeve (1) are provided with the securing member of through hole (9) for the fastening mixing needle of dismounting (4).
Fig. 6 is the cutaway view of the shaft shoulder (3), top is provided with bearing mounting hole (10), cylindrical and shaft shoulder reducing sleeve (1) assembling, and the shaft shoulder (3) arranges symmetrical keyway (8) with the faying face of shaft shoulder reducing sleeve (1), locate by key, install fastening by securing member; Shaft shoulder bottom is inner concave, and band annular groove (14) promotes material to flow.
Fig. 7 is mixing needle reducing sleeve (2) cutaway view, and the both sides of bottom symmetry arrange respectively three securing member installing holes; The center, lower surface of mixing needle reducing sleeve (2), is axially provided with a mixing needle installing hole (15) and keyway (16), and the top of mixing needle is coaxially arranged on the lower end head of mixing needle reducing sleeve (2) by mixing needle installing hole (15) and flat key; Have externally threaded securing member and laterally screw in mixing needle reducing sleeve (2) by the screwed hole on securing member installing hole, its front end holds out against mixing needle top retained part, and mixing needle (4) is fastened on mixing needle reducing sleeve (2).
Fig. 8,9 is respectively mixing needle (4) cutaway view and axial view, top retained part, and be provided with and be symmetrical arranged keyway (16); Mixing needle root processes the little shaft shoulder, and band annular groove (17), provides material mobile space, reduces in gap that plastic material enters mixing needle and the shaft shoulder; Root top is provided with the screw thread (18) identical with pin portion thread rotary orientation, by the downforce of screw thread, prevents that plastic material from entering gap and causing the stuck of mixing needle (4) and the shaft shoulder (3).
The different relative motions that cause of rotary speed of mixing needle and the shaft shoulder, if both gaps are too small, frictional dissipation is very large, easily causes structural failure; If excesssive gap material is easily clamp-oned gap, cause mixing needle and shaft shoulder stuck phenomenon.Mixing needle of the present invention and the shaft shoulder arrange 0.25mm gap.Select to meet loading bearing combination and be installed between relative rotary motion pair, guaranteed stirring tool axiality, avoided frictional dissipation that disalignment causes and the inefficacy of structure.Adjustment block is set between bearing, reduces the friction between bearing, improve bearing life.
● double-speed rotating stirring tool installation process
By securing member and key, mixing needle reducing sleeve is installed on mixing needle main shaft; Then by securing member and key, shaft shoulder reducing sleeve is installed on shaft shoulder main shaft; The mixing needle that installs key, bearing and adjustment block is installed in mixing needle reducing sleeve by mixing needle installing hole, laterally screws in mixing needle reducing sleeve by securing member, its front end holds out against mixing needle top retained part, and mixing needle is fastened in mixing needle reducing sleeve; Finally by key and securing member, the shaft shoulder is coaxially installed on shaft shoulder reducing sleeve.
● the welding of double-speed rotating stirring tool agitating friction is implemented
Before welding, set respectively the rotary speed of mixing needle and the shaft shoulder according to welding requirements, determine after other welding parameter, slowly penetrate material to be welded, in the time that material reaches plastifying state, stirring tool starts to advance, and forms weld seam.
● the dismounting of double-speed rotating stirring tool
Its unloading process is contrary with installation process to carry out, and is not repeated at this.
Claims (7)
1. a thick plates double-speed rotating stirring tool, comprises the shaft shoulder and mixing needle, it is characterized in that, both are with different rotary speed rotations; Also comprise shaft shoulder reducing sleeve and mixing needle reducing sleeve, wherein, the shaft shoulder is connected with shaft shoulder main shaft by shaft shoulder reducing sleeve, rotation jointly, and mixing needle is connected with mixing needle main shaft by mixing needle reducing sleeve, jointly rotation; Shaft shoulder main shaft and mixing needle main shaft form Concentric rotation kinematic pair; Between the described shaft shoulder and mixing needle, be provided with movable sealing structure, between shaft shoulder main shaft and the Concentric rotation kinematic pair of mixing needle main shaft formation, be provided with bearing or bearing combination, to guarantee good concentricity, when welding, the described shaft shoulder is from mixing needle drive and can set different rotary speeies.
2. thick plates as claimed in claim 1 double-speed rotating stirring tool, it is characterized in that, the movable sealing structure arranging between the described shaft shoulder and mixing needle be on the mixing needle cylindrical in described mixing needle and pivot clearance place with pin portion thread rotary orientation identical screw thread, by the downforce of screw thread, prevent that plastic material from entering gap and causing the stuck of mixing needle and the shaft shoulder, form the effect of movable sealing.
3. thick plates as claimed in claim 1 double-speed rotating stirring tool, is characterized in that, between described bearing, adjustment block is set, and reduces the friction between bearing, improves bearing life.
4. thick plates as claimed in claim 1 double-speed rotating stirring tool, is characterized in that, described shaft shoulder reducing sleeve top is provided with symmetrical keyway arrangements, is fastenedly connected, by key transmission with shaft shoulder main shaft; Bottom is provided with shaft shoulder installing hole and bearing mounting hole.
5. thick plates as claimed in claim 4 double-speed rotating stirring tool, is characterized in that, described shaft shoulder top is connected with shaft shoulder reducing sleeve by securing member and key, jointly rotation; Wei Nei concave plane, shaft shoulder bottom, has designed annular groove, promotes material to flow.
6. thick plates as claimed in claim 1 double-speed rotating stirring tool, is characterized in that, described mixing needle reducing sleeve top is provided with symmetrical keyway arrangements, is fastenedly connected, by key transmission with mixing needle main shaft; Middle part is radially provided with two symmetrical row's securing member installing holes, for clamping mixing needle; Bottom is provided with symmetrical axial keyway and mixing needle installing hole.
7. thick plates as claimed in claim 6 double-speed rotating stirring tool, is characterized in that, described mixing needle top is retained part, and this part is processed symmetrical keyway, is fastenedly connected, by keyway arrangements transmission with mixing needle reducing sleeve; Mixing needle root has designed the small-sized shaft shoulder with annular groove, provides space for material flows, and reduces the possibility that plastic material enters gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310055136.8A CN103801817A (en) | 2012-11-15 | 2013-02-20 | Double-speed rotating stirring tool for thick plate welding |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461487.4 | 2012-11-15 | ||
| CN201210461487 | 2012-11-15 | ||
| CN201310055136.8A CN103801817A (en) | 2012-11-15 | 2013-02-20 | Double-speed rotating stirring tool for thick plate welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103801817A true CN103801817A (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310055136.8A Pending CN103801817A (en) | 2012-11-15 | 2013-02-20 | Double-speed rotating stirring tool for thick plate welding |
Country Status (1)
| Country | Link |
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| CN (1) | CN103801817A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618924A (en) * | 2014-10-31 | 2016-06-01 | 上海航天设备制造总厂 | Friction stir welding electric spindle device having retraction function |
| CN106077946A (en) * | 2016-07-06 | 2016-11-09 | 上海航天设备制造总厂 | A kind of postwelding material surface is without thinning New type agitation friction welding (FW) soldering set |
| CN109093245A (en) * | 2018-09-18 | 2018-12-28 | 中国航空制造技术研究院 | A kind of double drive differential friction stir welding tools |
| CN113770504A (en) * | 2021-09-16 | 2021-12-10 | 国家高速列车青岛技术创新中心 | Double-body type cavity filling metal/FRP friction stir welding connection method |
| CN115464248A (en) * | 2022-09-15 | 2022-12-13 | 中国航空制造技术研究院 | A dual-drive differential backfill friction stir spot welding spindle |
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| US6199745B1 (en) * | 1998-07-09 | 2001-03-13 | Mts Systems Corporation | Welding head |
| WO2001028732A1 (en) * | 1999-10-19 | 2001-04-26 | Norsk Hydro Asa | Friction stir spot welding method and apparatus |
| US20070152015A1 (en) * | 2006-01-04 | 2007-07-05 | The Boeing Company | Methods and apparatus for retractable pin friction stir welding and spot welding |
| US20070267462A1 (en) * | 2005-01-24 | 2007-11-22 | The Boeing Company | Method and Apparatus for Friction Stir Welding using Spindle-in-Spindle |
| US7401723B2 (en) * | 2004-08-30 | 2008-07-22 | Alcoa Inc. | Advanced friction stir welding tools |
| CN101890573A (en) * | 2010-08-20 | 2010-11-24 | 哈尔滨工业大学 | A Friction Stir Welding Method of Stirring Needle and Shaft Shoulder Differential Rotation |
| CN202555969U (en) * | 2012-04-23 | 2012-11-28 | 无锡天野数控装备有限公司 | Inter-shaft structure for double-shaft friction stir welding of heavy plates |
-
2013
- 2013-02-20 CN CN201310055136.8A patent/CN103801817A/en active Pending
Patent Citations (7)
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| US6199745B1 (en) * | 1998-07-09 | 2001-03-13 | Mts Systems Corporation | Welding head |
| WO2001028732A1 (en) * | 1999-10-19 | 2001-04-26 | Norsk Hydro Asa | Friction stir spot welding method and apparatus |
| US7401723B2 (en) * | 2004-08-30 | 2008-07-22 | Alcoa Inc. | Advanced friction stir welding tools |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618924A (en) * | 2014-10-31 | 2016-06-01 | 上海航天设备制造总厂 | Friction stir welding electric spindle device having retraction function |
| CN105618924B (en) * | 2014-10-31 | 2019-07-26 | 上海航天设备制造总厂 | A kind of agitating friction weldering electric main shaft device with pumpback function |
| CN106077946A (en) * | 2016-07-06 | 2016-11-09 | 上海航天设备制造总厂 | A kind of postwelding material surface is without thinning New type agitation friction welding (FW) soldering set |
| CN109093245A (en) * | 2018-09-18 | 2018-12-28 | 中国航空制造技术研究院 | A kind of double drive differential friction stir welding tools |
| CN109093245B (en) * | 2018-09-18 | 2020-11-13 | 中国航空制造技术研究院 | Double-drive differential stirring friction welding tool |
| CN113770504A (en) * | 2021-09-16 | 2021-12-10 | 国家高速列车青岛技术创新中心 | Double-body type cavity filling metal/FRP friction stir welding connection method |
| CN113770504B (en) * | 2021-09-16 | 2022-10-14 | 国家高速列车青岛技术创新中心 | Double-body type cavity filling metal/FRP friction stir welding connection method |
| CN115464248A (en) * | 2022-09-15 | 2022-12-13 | 中国航空制造技术研究院 | A dual-drive differential backfill friction stir spot welding spindle |
| CN115464248B (en) * | 2022-09-15 | 2023-12-29 | 中国航空制造技术研究院 | A dual-drive differential backfill friction stir spot welding spindle |
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Application publication date: 20140521 |
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| RJ01 | Rejection of invention patent application after publication |