CN202726313U - Supersonic vibration auxiliary friction stir welding device - Google Patents
Supersonic vibration auxiliary friction stir welding device Download PDFInfo
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- CN202726313U CN202726313U CN 201220342406 CN201220342406U CN202726313U CN 202726313 U CN202726313 U CN 202726313U CN 201220342406 CN201220342406 CN 201220342406 CN 201220342406 U CN201220342406 U CN 201220342406U CN 202726313 U CN202726313 U CN 202726313U
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Abstract
The utility model relates to a supersonic vibration auxiliary stirring friction welding device, which comprises a stirring friction welder, an ultrasonic wave generator, an energy converter, an amplitude change pole and a tool head, wherein the stirring friction welder is provided with a stirring head, the energy converter, the amplitude change pole and the tool head form a vibration unit, the ultrasonic wave generator is connected with the vibration unit through a signal transmitting wire, the energy converter is connected with the amplitude change pole, the amplitude change pole is then connected with the tool head, the amplitude change pole and the tool head are connected through double-end studs, a supersonic vibration guide-in point of the tool head is in a region to be welded in front of the stirring head, and the vibration unit is fixed with the stirring friction welder through a positioning clamp. Compared with a method for coupling the stirring head and the amplitude change pole of a supersonic energy converter, the supersonic vibration auxiliary stirring friction welding device has the advantages that after a system is integrated by the self designed positioning clamp, the stability of the vibration system can be effectively guaranteed, the two-dimensional regulation in the vertical and horizontal directions can also be realized, the distance between the tool head and the stirring head is easily regulated, the supersonic vibration auxiliary stirring friction welding device is suitable for stirring heads in various specifications, and the applicability is wide.
Description
Technical field
The utility model relates to the auxiliary friction stir weld device of a kind of ultrasonic vibration.
Background technology
Friction stir welding (Friction stir welding is called for short FSW) is a solid phase interconnection technique of Britain's institute of welding invention in 1991, have that welding deformation is little, welding quality is high and the advantage such as green non-pollution, be called as " the revolutionary interconnection technique of tool of 21 century ".But because in the welding process, stirring-head is subject to huge axial downforce and horizontal shear force, its speed of welding is limited, and the stirring-head serious wear has also proposed very high requirement to friction stir welding process equipment jig.Chinese scholars is improved welding surroundings by the method for additional auxiliary thermal sources such as adopting that portable induction coil, resistance heat, laser energy or plasma arc are done, but they have narrow application range, efficient is low or can uses the shortcomings such as technological parameter is few.
Ultrasonic wave is a kind of of sound wave, has the characteristics such as frequency height, penetration capacity be strong.Experiment showed, when ultrasonic when putting on material, can change Constitutive relationship of metals, reduce its resistance of deformation, therefore have the people to propose to improve welding surroundings by composite ultraphonic in the process of friction stir welding, thereby can improve speed of welding and welding quality.Chinese patent CN 1836820A discloses a kind of welding method and device of metal, stir friction welding process is introduced in the ultrasonic vibration of axial vibration or torsional oscillation, make dither with the agitating friction soldering tip in the high-frequency mechanical vibration energy drives high speed rotating, stirring-head is passed to the weld zone plastic metal with vibrational energy, and the method that stirs compound action with ultrasonic vibration and friction forms the welding that seam organization is realized metal.Its technical characteristics is that the energy that mixing needle and ultrasonic transducer ultrasonic transformer are connected as a single entity ultrasonic vibration is imported to the weld seam deep layer, poor in the hope of improving the weld seam base material plastic fluidity that " funnel-form " temperature field that upper height that conventional friction stir welding forms bends down causes, the shortcoming that welding quality is low, the method that stirs compound action with ultrasonic vibration and friction forms the welding that seam organization is realized metal.But this design, downforce during welding seriously hinders the ultrasonic vibration of mixing needle, and change larger to original friction stir welding machine equipment, system makes complicated, and ultrasonic vibration system will reach resonant condition with mixing needle, therefore for the different-thickness workpiece, need to change the ultrasonic vibration system that is complementary with it, bad adaptability when changing mixing needle.
Summary of the invention
The purpose of this utility model provides the auxiliary friction stir weld device of a kind of ultrasonic vibration, under the prerequisite of not changing existing equipment, directly ultrasonic vibration is applied on the mixing needle workpiece to be welded on every side by servicing unit, utilize ultrasonic vibration to reduce the resistance of deformation of material, thereby reach the raising speed of welding, improve welding quality.
The technical scheme that the utility model is taked is:
Friction stir weld device is assisted in ultrasonic vibration, comprise friction stir welding machine, supersonic generator, transducer, ultrasonic transformer, tool heads with stirring-head, rear three forms vibration unit, supersonic generator connects vibration unit by signal transmssion line, transducer links to each other with ultrasonic transformer, the ultrasonic transformer tool heads of ining succession again, and the two all connects by studs, the ultrasonic vibration of tool heads imports point in the to-be-welded region in stirring-head the place ahead, and vibration unit is fixed by positioning fixture and friction stir welding machine.
Described positioning fixture has various ways, and its function is vibration unit is fixed and to be had enough stability, can guarantee after fixing that tool heads is pressed on the workpiece to be welded around the mixing needle.Wherein a kind of positioning fixture structure is as follows: comprise the cuboid framework, brace, the cylinder anchor clamps, the cuboid framework comprises front plate, rear plate, front plate, it is the friction stir welding machine upper guard-plate between the rear plate, before, latter two clamping plate are by special type studs and friction stir welding machine upper guard-plate closely cooperate (face contacts), a gear shaft is installed in position, front plate upper middle, the front plate front hangs a connecting piece, groove and locating slot with tooth bar are arranged on the brace, forming rack-and-pinion with the groove of tooth bar on gear shaft and the brace cooperates, cylinder anchor clamps and brace are integrally welded, and described brace is fixed by the fastening bolt that passes locating slot and front apron.
Positioning fixture also can adopt the mode of above-mentioned cuboid framework and leading screw combination, namely substitutes the function that brace is realized up-down adjustment with leading screw.
Positioning fixture also can be fixed a guide rail along the welding direction level above baffle plate, slide block is arranged on the guide rail, slide block again with the combination of vertical leading screw, realize the adjusting of all directions.
Positioning fixture also can make above-mentioned leading screw into pinion and rack.
Described tool heads can increase by a hinges mechanism and adjust angle horizontal by 30 ° of-70 ° of angles in positioning fixture, also can use different braces or leading screw instead and change angle.
Described transducer adopts the piezo-electric type ultrasonic transducer, and tool heads adopts the not only antiwear heat resisting but also have the material of some strength such as tool steel, titanium alloy, carbide alloy, and end face is made sphere.
The course of work of welder is as follows: at first by supersonic generator the industrial-frequency alternating current of 50Hz is converted to superaudible high frequency ac signal, be ultrasonic mechanical vibrational energy through transducer with electric energy conversion again, after ultrasonic transformer further amplifies amplitude, by tool heads ultrasonic wave is conducted into mixing needle to-be-welded region on every side.With positioning fixture vibration unit and friction stir welding machine are fixed again, make its in welding process along with stirring-head slides forward along seam to be welded, thereby realized ultrasonic auxiliary Friction stir welding process.The interaction energy of ultrasonic vibration and material reduces the resistance of deformation of material, improves the plastic fluidity of material, reduces the welding resistance thereby reach, and improves welding efficiency and welding quality, reduces the purpose to the requirement of agitating friction soldering equipment.The drawback that adopts simultaneously the split type design of stirring-head and transducer ultrasonic transformer can avoid the ultrasonic vibration of integral type design mixing needle hindered by huge downforce, and do not change existing equipment, only needing to add auxiliary equipment can use, vibrational system is applicable to all size stirring-head, and the different thicknesss of slab of different materials are all had good adaptability.
The utility model is for this defective that exists in the friction stir welding, design the device that directly ultrasonic wave is applied on the material, change Constitutive relationship of metals by ultrasonic wave, the resistance of deformation of material is descended, thereby the welding resistance that stirring-head is subject in the reduction welding process, improve speed of welding and welding efficiency, improve welding quality, enlarge the applicable scope of welding parameter.With the ultrasonic transducer ultrasonic transformer is compared with the stirring-head method of being coupled, the positioning fixture that uses designed, designed with the system integration after, not only can effectively ensure the stability of vibrational system, two-dimensional adjustment about can also realizing on the fore-and-aft direction, be easy to the distance between adjustment means head and the stirring-head, be fit to the stirring-head of all size, have widely adaptability.
Compare with common friction stir welding, the effect of ultrasonic vibration is mainly reflected in three aspects in the friction stir welding:
(1) additionally ultrasonicly good appearance of weld can be under less shaft shoulder pressure, obtained, thereby friction stir welding can be reduced to the requirement of equipment.
(2) additionally ultrasonicly can obtain good appearance of weld in the situation of speed of welding improving, help to improve welding efficiency.
(3) nugget district and all to some extent refinements of heating power influence district crystal grain in the additional ultrasonic rear Microstructure of Joint has certain positive impact to improving seam organization.
Description of drawings
Fig. 1 is the auxiliary friction stir weld device structure chart of the utility model ultrasonic vibration;
Fig. 2 is the utility model embodiment 1 positioning fixture structural front view;
Fig. 3 is the utility model embodiment 1 positioning fixture structure left view;
Fig. 4 is the cuboid frame structure;
Fig. 5 is the cylinder clamp structure;
Fig. 6 is the location drawing of friction stir welding machine baffle; Wherein, 1. friction stir welding machine, 2. stirring-head, 3. positioning fixture, 4. ultrasonic transformer, 5. tool heads, 6. butt-welded side seam, 7. supersonic generator, 8. transducer, 9. control panel, 10. cuboid framework, 11. braces, 12. the cylinder anchor clamps, 13. front plates, 14. rear plates, 15. with the groove of tooth bar, 16. locating slots, 17. gear shafts, 18. fastening bolt, 19. studs, 20. baffle plates.
The specific embodiment
Below in conjunction with embodiment the utility model is further specified.
Embodiment 1
Friction stir weld device is assisted in ultrasonic vibration, comprise friction stir welding machine 1, supersonic generator 7, transducer 8, ultrasonic transformer 4, tool heads 5 with stirring-head 2, supersonic generator 7 connects vibration unit by signal transmssion line, vibration unit comprises transducer 8, ultrasonic transformer 4, tool heads 5, the transducer ultrasonic transformer of ining succession, the ultrasonic transformer tool heads of ining succession again, the two all connects by studs, the ultrasonic vibration of tool heads imports point in the to-be-welded region in stirring-head the place ahead, and vibration unit is fixing with friction stir welding machine 1 by positioning fixture 3.
Described positioning fixture comprises cuboid framework 10, brace 11, cylinder anchor clamps 12, cuboid framework 10 comprises front plate 13, rear plate 14, front plate 13, it is friction stir welding machine 1 upper guard-plate 20 between the rear plate 14, before, latter two clamping plate are by special type studs 19 and friction stir welding machine 1 upper guard-plate closely cooperate (face contacts), a gear shaft 17 is installed in position, front plate 13 upper middle, front plate 13 fronts hang a connecting piece 11, groove 15 and locating slot 16 with tooth bar are arranged on the brace 11, groove 15 formative gear tooth bars with tooth bar on gear shaft 17 and the brace 11 cooperate, cylinder anchor clamps 12 are integrally welded with brace 11, and described brace 11 is fixing by the fastening bolt 18 that passes locating slot 16 and front apron 13.
Described tool heads 5 is horizontal by 50 ° of angles.
Front plate 13, rear plate 14 and four special type studs 19 form a cuboid framework 10, with the baffle-plate-sleeve in the place ahead on the stirring-head on the friction stir welding machine 1 inside and form and closely cooperate.All around mobile whole framework is realized the two-dimensional adjustment on the horizontal direction, move to pass with bolt respectively behind the correct position before and after two clamping plates withstand on the baffle plate, realize fixing.The gear shaft 17 of installing on the front plate 13 cooperates with the groove 15 formative gear tooth bars with tooth bar, by the gear on the turning gear wheel shaft (being installed on the front plate), can up-down adjustment cylinder anchor clamps 12, and the adjusting of the realization third dimension.After being adjusted to desired location, be tightened on the front plate after fastening bolt 18 passed locating slot, can compress the cylinder anchor clamps, thereby realize the fixing of vibration unit.
Friction stir welding is assisted in ultrasonic vibration, use the present embodiment device, by supersonic generator industrial-frequency alternating current is converted to superaudible high frequency ac signal, be ultrasonic mechanical vibrational energy through transducer with electric energy conversion again, after ultrasonic transformer further amplifies amplitude, first ultrasonic wave is imported from the to-be-welded region around the stirring-head by tool heads, adopt the 2A12 Welded material of 200 * 60 * 6mm, the vibration frequency 20kHz of ultrasonic transformer, amplitude 40 μ m open friction stir welding machine stirring-head and supersonic generator, carry out butt welding along welding direction, stirring-head rotational speed omega=600r/min, speed of welding v=80mm/min, shaft shoulder volume under pressure 0.05mm.
Friction stir weld device is assisted in ultrasonic vibration, comprise friction stir welding machine 1, supersonic generator 7, transducer 8, vibration unit with stirring-head 2, supersonic generator 7 connects vibration unit by transducer 8, vibration unit comprises ultrasonic transformer 4, the tool heads 5 of ining succession below the ultrasonic transformer 4, the ultrasonic vibration of tool heads 5 imports point in the to-be-welded region in stirring-head the place ahead, and vibration unit is fixing with friction stir welding machine 1 by positioning fixture 3.
Described positioning fixture comprises cuboid framework 10, leading screw, cylinder anchor clamps 12, cuboid framework 10 comprises front plate 13, rear plate 14, it is friction stir welding machine 1 upper guard-plate 20 between front plate 13, the rear plate 14, former and later two clamping plate are by special type studs 19 and friction stir welding machine 1 upper guard-plate tight fit (face contacts), a rotor is installed in position, front plate 13 upper middle, rotor cooperates with leading screw, rotary rotor can be realized moving up and down of leading screw, cylinder anchor clamps are welded in the leading screw lower end, and other parts are identical with embodiment 1.
With the auxiliary friction stir weld device of present embodiment ultrasonic vibration, adopt the 2A12 Welded material of 200 * 60 * 6mm, drive the ultrasonic transformer vibration with supersonic generator, the vibration frequency 20kHz of ultrasonic transformer, amplitude 40 μ m open friction stir welding machine stirring-head and supersonic generator, weld along welding direction, stirring-head rotational speed omega=600r/min, speed of welding v=100mm/min, shaft shoulder volume under pressure 0.05mm.
Comparative Examples 1
Adopt the 2A12 Welded material of 200 * 60 * 6mm, with existing friction stir welding machine, open the friction stir welding machine stirring-head, identical with embodiment 1 welding parameter along the welding direction welding, difference is not add ultrasonic.
Comparative Examples 2
Adopt the 2A12 Welded material of 200 * 60 * 6mm, with existing friction stir welding machine, open the friction stir welding machine stirring-head, identical with embodiment 2 welding parameters along the welding direction welding, difference is not add ultrasonic.
Claims (5)
1. friction stir weld device is assisted in ultrasonic vibration, it is characterized in that, comprise friction stir welding machine, supersonic generator, transducer, vibration unit with stirring-head, supersonic generator connects vibration unit by transducer, vibration unit comprises ultrasonic transformer, the tool heads of ining succession below the ultrasonic transformer, the ultrasonic vibration of tool heads import point in the to-be-welded region in stirring-head the place ahead, and vibration unit is fixed by positioning fixture and friction stir welding machine.
2. friction stir weld device is assisted in ultrasonic vibration according to claim 1, it is characterized in that, described positioning fixture comprises the cuboid framework, brace, the cylinder anchor clamps, the cuboid framework comprises front plate, rear plate, front plate, it is the friction stir welding machine upper guard-plate between the rear plate, before, latter two clamping plate are by special type studs and friction stir welding machine upper guard-plate tight fit, a gear shaft is installed in position, front plate upper middle, the front plate front hangs a connecting piece, groove and locating slot with tooth bar are arranged on the brace, forming rack-and-pinion with the groove of tooth bar on gear shaft and the brace cooperates, cylinder anchor clamps and brace are integrally welded, and described brace is fixed by the fastening bolt that passes locating slot and front apron.
3. the auxiliary friction stir weld device of ultrasonic vibration according to claim 1 is characterized in that described tool heads is horizontal by 30 ° of-70 ° of angles.
4. the auxiliary friction stir weld device of ultrasonic vibration according to claim 1 is characterized in that described tool heads end face is made sphere.
5. the auxiliary friction stir weld device of ultrasonic vibration according to claim 1 is characterized in that described tool heads is tool steel, titanium alloy or carbide alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342406 CN202726313U (en) | 2012-07-13 | 2012-07-13 | Supersonic vibration auxiliary friction stir welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220342406 CN202726313U (en) | 2012-07-13 | 2012-07-13 | Supersonic vibration auxiliary friction stir welding device |
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| CN202726313U true CN202726313U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220342406 Expired - Fee Related CN202726313U (en) | 2012-07-13 | 2012-07-13 | Supersonic vibration auxiliary friction stir welding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894721A (en) * | 2014-03-13 | 2014-07-02 | 哈尔滨工业大学 | Stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting |
| CN108857036A (en) * | 2018-07-02 | 2018-11-23 | 南京航空航天大学 | A kind of rolling frictional connection method and apparatus of ultrasonic vibration auxiliary |
-
2012
- 2012-07-13 CN CN 201220342406 patent/CN202726313U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894721A (en) * | 2014-03-13 | 2014-07-02 | 哈尔滨工业大学 | Stirring friction welding method with pre-welding and post-welding dual ultrasonic synchronous vibration assisting |
| CN108857036A (en) * | 2018-07-02 | 2018-11-23 | 南京航空航天大学 | A kind of rolling frictional connection method and apparatus of ultrasonic vibration auxiliary |
| CN108857036B (en) * | 2018-07-02 | 2020-06-09 | 南京航空航天大学 | Ultrasonic vibration assisted rolling friction connection method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150713 |
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| EXPY | Termination of patent right or utility model |