CN109048038A - A kind of adaptive agitating device and its control method of friction stir weld - Google Patents
A kind of adaptive agitating device and its control method of friction stir weld Download PDFInfo
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- CN109048038A CN109048038A CN201811154893.XA CN201811154893A CN109048038A CN 109048038 A CN109048038 A CN 109048038A CN 201811154893 A CN201811154893 A CN 201811154893A CN 109048038 A CN109048038 A CN 109048038A
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention provides a kind of adaptive agitating device of friction stir weld, welding mechanism, sliding equipment, driving mechanism, displacement sensor and control mechanism including having mixing needle；Welding mechanism is slidably connected with sliding equipment；Driving mechanism connect with welding mechanism and connect with control mechanism signal, and displacement sensor setting is connect on the sliding mechanism and with control mechanism signal；Driving mechanism is fluid pressure type driving mechanism, electro hydraulic valve is arranged on oil pipe and connect with control mechanism, it realizes through control electro hydraulic valve and adjusts the oil liquid flow into oil cylinder, the lifting of the welding mechanism that connect with piston on the sliding mechanism is controlled, with the spacing that is kept stirring between needle and workpiece within the scope of spacing threshold.The present invention can adjust the spacing between mixing needle and workpiece in real time to control the forging force of blender welding, the forging force in stir friction welding process can be maintained at specified range, to improve the quality of friction stir weld.
Description
Technical field
The present invention relates to technical fields of mechanical processing, more specifically to a kind of adaptively stirring for friction stir weld
Mix device and its control method.
Background technique
Currently, well known Friction Stir Welding be mutually moved using workpiece end face, heat caused by phase mutual friction, make to hold
Portion reaches hot plastic state, then rapid upset, completes a kind of method of welding.Compared with conventional fusion welding method, agitating friction
Soldering set has the advantages that low stress, small deformation, low energy consumption and green non-pollution.Friction stir welding be from laser welding come out with
Carry out most noticeable welding method.Major transformation is occurred for the interconnection technique of non-ferrous metals such as enabling aluminum alloy to by its appearance.With
Friction stir welding method welding aluminum alloy achieves good effect.Nowadays zinc, copper, titanium, low-carbon are just carried out in English, Mei Deng state
The Friction Stir Welding of steel, composite material etc..
However, Friction Stir Welding is very stringent to level weld seam requirement: it is required that the spacing of mixing needle and workpiece is less than restriction
Range, the restriction of the spacing then limit the depth that the mixing needle shaft shoulder is vertically pressed into workpiece surface, that is, limit under mixing needle
Pressure amount.And volume under pressure is to directly affect the principal element of forging force, wherein mixing needle bestows the forging force welding quality of workpiece
Have a major impact: if workpiece surface out-of-flatness, contact situation of the mixing needle with workpiece constantly changes when welding, leads to upset Reeb
It is dynamic, cause welding quality unstable.
In existing process of manufacture, the spacing range between stirring-head and workpiece is difficult to keep, once processing
Workpiece changes the workpiece at curved surface etc, and the spacing that just will appear stirring-head and workpiece is greater than the phenomenon that limiting range, causes to stir
The weld seam for mixing head and workpiece changes because of the variation of spacing, and the forging force for bestowing workpiece to mixing needle in this way causes to fluctuate, and makes
Welding quality unstable is obtained, and the workpiece that welding processing is formed will appear the case where not penetrating, not only adding to workpieces in subsequent
Work is brought the problem of quality, and can largely effect on the subsequent applications of workpiece.
Summary of the invention
It is an object of the invention to overcome shortcoming and deficiency in the prior art, a kind of the adaptive of friction stir weld is provided
Agitating device and its control method are answered, the adaptive agitating device and its control method can adjust between mixing needle and workpiece in real time
Spacing with control blender welding forging force, the forging force in stir friction welding process can be maintained at specified model
It encloses, to improve the quality of friction stir weld.
In order to achieve the above object, the technical scheme is that: a kind of friction stir weld from
Adapt to agitating device, it is characterised in that: including with the welding mechanism of mixing needle, sliding equipment, for driving welding mechanism to exist
The driving mechanism that is gone up and down on sliding equipment, displacement sensor and control mechanism for detecting stirring-head height and position；The weldering
Connection mechanism is slidably connected with sliding equipment；The driving mechanism connect with welding mechanism and connect with control mechanism signal, realizes
Lifting is slided on the sliding mechanism by control driving welding mechanism；Institute's displacement sensors setting on the sliding mechanism and with control
Mechanism signal connection processed, realizes and feeds back the location information of stirring-head in control mechanism；
The driving mechanism is fluid pressure type driving mechanism, and including oil cylinder, oil pipe, setting in in-oil cylinder piston, oil storage
Tank, oil pump and electro hydraulic valve；The oil storage tank, oil pump and oil cylinder are sequentially connected by oil pipe；The piston and welding mechanism
Connection；The electro hydraulic valve is arranged on oil pipe and connect with control mechanism, realizes through control electro hydraulic valve and adjusts
Into the oil liquid flow of oil cylinder, control the lifting of the welding mechanism connecting with piston on the sliding mechanism, be kept stirring needle and
Spacing between workpiece is within the scope of spacing threshold.
In the above scheme, the adaptive agitating device structure is simply and easy to operate, can be fed back by displacement sensor
Mixing needle height position information, adjust the spacing between mixing needle and workpiece in real time by electro hydraulic valve, be kept stirring needle
Spacing between workpiece, can be by Friction Stir Welding to control the forging force of blender welding within the scope of spacing threshold
Forging force in the process is maintained at specified range, to improve the quality of friction stir weld.
The welding mechanism further includes the stirring motor for driving mixing needle to rotate；The stirring motor and mixing needle connect
It connects, and is connect respectively with piston and sliding equipment；The stirring motor is connect with control mechanism signal.
The sliding equipment includes the track and railroad shoe that oil cylinder two sides are arranged in；The stirring motor two sides and railroad shoe
Connection, and be slidably connected by railroad shoe and track；Institute's displacement sensors are arranged in railroad shoe.
The invention also includes the pressure sensors for detecting oil pressure in oil pipe；Pressure sensor setting oil pump with
On oil pipe between electro hydraulic valve, and it is connect with control system signal.
The invention also includes the electric pressure-regulating valves for adjusting oil pressure in oil pipe；Electric pressure-regulating valve setting oil pump with
It on oil pipe between electro hydraulic valve, and is connect with control system signal, realizes that adjusting oil liquid pressure connect to control with piston
Welding mechanism lifting on the sliding mechanism.
Spacing threshold between welding mechanism and workpiece is 10mm.
A kind of control method of the adaptive agitating device of friction stir weld, it is characterised in that:
Firstly, the spacing threshold between setting mixing needle and workpiece；
Secondly, the stirring needle position signal control fed back by displacement sensor enters the oil liquid flow of oil cylinder, so that control
The lifting for the mixing needle connecting with piston is made, the height and position for adjusting mixing needle is realized, to be kept stirring between needle and workpiece
Spacing is within the scope of spacing threshold.
In the above scheme, control method of the present invention can adjust the spacing between mixing needle and workpiece in real time to control stirring
The forging force of machine welding, can be maintained at specified range for the forging force in stir friction welding process, stir to improve friction
Mix the quality of welding.
The stirring needle position signal control fed back by displacement sensor enters the oil liquid flow of oil cylinder, so that control
The lifting for the mixing needle connecting with piston realizes the height and position for adjusting mixing needle, between being kept stirring between needle and workpiece
Away within the scope of spacing threshold, refer to:
(1) when displacement sensor detects that the spacing between mixing needle and workpiece is more than spacing threshold range, then stop
Mixing needle weld job；Meanwhile oil liquid flow is increased by control, so that the decline for the mixing needle that control is connect with piston, real
The height and position for now adjusting mixing needle, with the spacing that is kept stirring between needle and workpiece within the scope of spacing threshold；
(2) it when displacement sensor detects that the spacing between mixing needle and workpiece is within the scope of spacing threshold, then drives
Dynamic mixing needle carries out weld job.
The invention also includes the fuel injection pressure signals used in pressure sensor detection oil pipe to adjust oil liquid pressure, realizes control
The step of stirring needle lifting being connect with piston.
The spacing threshold is 10mm.
Compared with prior art, the invention has the advantages that with the utility model has the advantages that
1, the adaptive agitating device of friction stir weld of the present invention and its control method can be by adjusting the oil in oil pipe
Flow quantity and oil liquid pressure to adjust the spacing between mixing needle and workpiece in real time to control the forging force of blender welding, energy
It is enough that forging force in stir friction welding process is maintained at specified range, to improve the quality of friction stir weld.
2, the adaptive agitating device of friction stir weld of the present invention and its control method ensure that Friction Stir Welding
Safety makes agitating friction weldering welding not cause danger because of the complicated workpiece of welding, also meets to the stringent of weld seam
It is required that will not impact to the subsequent applications of workpiece, material cost, the safety and production efficiency of raising are saved.
Detailed description of the invention
Fig. 1 is the adaptive agitating device schematic diagram of friction stir weld of the present invention；
Fig. 2 is oil circuit schematic diagram in the adaptive agitating device of friction stir weld of the present invention；
Wherein, 1 it is stirring-head, 2 be stirring motor, 3 be displacement sensor, 4 be track, 5 be oil cylinder, 6 be oil pipe, 7 is
Railroad shoe, 8 be oil pump, 9 be pressure sensor, 10 be electric pressure-regulating valve, 11 be electro hydraulic valve, 12 be piston, 13 be oil storage
Tank.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawing.
Embodiment
As depicted in figs. 1 and 2, a kind of adaptive agitating device of friction stir weld of the present invention includes having mixing needle 1
Welding mechanism, sliding equipment, the driving mechanism for driving welding mechanism to go up and down on the sliding mechanism, for detecting stirring-head
The displacement sensor 3 and control mechanism of 1 height and position, wherein welding mechanism is slidably connected with sliding equipment, driving mechanism and weldering
Connection mechanism is connected and is connect with control mechanism signal, is realized and is slided lifting on the sliding mechanism by control driving welding mechanism,
And the setting of displacement sensor 3 is connect on the sliding mechanism and with control mechanism signal, is realized and is fed back the location information of stirring-head 1
In control mechanism.
Driving mechanism of the invention is fluid pressure type driving mechanism, and including oil cylinder 5, oil pipe 6, the work being arranged in oil cylinder 5
Plug 12, oil storage tank 13, oil pump 8 and electro hydraulic valve 11, wherein oil storage tank, oil pump 8 and oil cylinder 5 are sequentially connected by oil pipe 6,
Piston 12 is connect with welding mechanism, and electro hydraulic valve 11 is arranged on oil pipe 6 and connect with control mechanism, is realized through control electricity
Draining pressure valve 11 adjusts the oil liquid flow into oil cylinder 5, controls the welding mechanism that connect with piston 12 on the sliding mechanism
Lifting, with the spacing that is kept stirring between needle 1 and workpiece within the scope of spacing threshold 10mm.
The welding mechanism of the present embodiment further include for drive mixing needle 1 rotate stirring motor 2, the stirring motor 2 with
Mixing needle 1 connects, and connect respectively with piston 12 and sliding equipment, and stirring motor 2 is connect with control mechanism signal.Sliding equipment
Track 4 and railroad shoe 7 including 5 two sides of oil cylinder are arranged in, 2 two sides of stirring motor are connect with railroad shoe 7, and pass through railroad shoe 7
It is slidably connected with track 4, and displacement sensor 3 is arranged in railroad shoe 7.
The invention also includes the pressure sensors 9 for detecting oil pressure in oil pipe and the electricity for adjusting oil pressure in oil pipe 6
Dynamic pressure regulator valve 10, wherein pressure sensor 9 is arranged on the oil pipe 6 between oil pump 8 and electro hydraulic valve 11, and is with control
Signal of uniting connects.Electric pressure-regulating valve 10 is arranged on the oil pipe 6 between oil pump 8 and electro hydraulic valve 11, and believes with control system
Number connection, realize adjust oil liquid pressure to control the lifting of the welding mechanism connecting with piston 12 on the sliding mechanism.
A kind of control method of the adaptive agitating device of friction stir weld of the present invention, is such that
Firstly, setting spacing threshold between mixing needle 1 and workpiece as 10mm；
Secondly, 1 position signal of the mixing needle control fed back by displacement sensor 3 enters the oil liquid flow of oil cylinder 5, so that
The lifting for the mixing needle 1 connecting with piston 12 is controlled, the height and position for adjusting mixing needle 1 is realized, to be kept stirring needle 1 and workpiece
Between spacing within the scope of spacing threshold 10mm.
Specifically: (1) when displacement sensor 3 detects that the spacing between mixing needle 1 and workpiece is more than spacing threshold
When 10mm range, then stop 1 weld job of mixing needle；Meanwhile oil liquid flow is increased by control, so that control connects with piston 12
The height and position for adjusting mixing needle 1 is realized in the decline of the mixing needle 1 connect, with the spacing that is kept stirring between needle 1 and workpiece
Away within the scope of threshold value 10mm；
(2) when displacement sensor 3 detects the spacing between mixing needle 1 and workpiece within the scope of spacing threshold 10mm
When, then drive mixing needle 1 to carry out weld job.
Control method of the invention further includes that pressure sensor 9 is used to detect the fuel injection pressure signal in oil pipe 6 to adjust oil liquid
The step of pressure, the mixing needle 1 for realizing that control is connect with piston 12 is gone up and down.
The adaptive agitating device and its control method of friction stir weld of the present invention can be by adjusting the oil liquid in oil pipe 6
Flow and oil liquid pressure to adjust the spacing between mixing needle 1 and workpiece in real time to control the forging force of blender welding, can
Forging force in stir friction welding process is maintained at specified range, to improve the quality of friction stir weld.The invention
The safety that ensure that Friction Stir Welding makes agitating friction weldering welding not cause danger because of the complicated workpiece of welding,
Also the strict demand to weld seam is met, will not be impacted to the subsequent applications of workpiece, material cost, the peace of raising are saved
Full property and production efficiency.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of adaptive agitating device of friction stir weld, it is characterised in that: including the welding mechanism with mixing needle, cunning
Motivation structure, the driving mechanism for driving welding mechanism to go up and down on the sliding mechanism, the position for detecting stirring-head height and position
Displacement sensor and control mechanism；The welding mechanism is slidably connected with sliding equipment；The driving mechanism is connect with welding mechanism
And connect with control mechanism signal, it realizes and lifting is slided by control driving welding mechanism on the sliding mechanism；The displacement passes
Sensor setting is connect on the sliding mechanism and with control mechanism signal, realizes the location information feedback by stirring-head in control machine
Structure；
The driving mechanism is fluid pressure type driving mechanism, and including oil cylinder, oil pipe, setting in in-oil cylinder piston, oil storage tank, oil
Pump and electro hydraulic valve；The oil storage tank, oil pump and oil cylinder are sequentially connected by oil pipe；The piston is connect with welding mechanism；
The electro hydraulic valve is arranged on oil pipe and connect with control mechanism, realizes through control electro hydraulic valve and adjusts into oil
The oil liquid flow of cylinder controls the lifting of the welding mechanism that connect with piston on the sliding mechanism, be kept stirring needle and workpiece it
Between spacing within the scope of spacing threshold.
2. the adaptive agitating device of friction stir weld according to claim 1, it is characterised in that: the welding mechanism
It further include the stirring motor for driving mixing needle to rotate；The stirring motor is connect with mixing needle, and respectively with piston and cunning
The connection of motivation structure；The stirring motor is connect with control mechanism signal.
3. the adaptive agitating device of friction stir weld according to claim 2, it is characterised in that: the sliding equipment
Track and railroad shoe including oil cylinder two sides are arranged in；The stirring motor two sides are connect with railroad shoe, and by railroad shoe with
Track is slidably connected；Institute's displacement sensors are arranged in railroad shoe.
4. the adaptive agitating device of friction stir weld according to claim 1, it is characterised in that: further include for examining
Survey the pressure sensor of oil pressure in oil pipe；The pressure sensor is arranged on the oil pipe between oil pump and electro hydraulic valve, and
It is connect with control system signal.
5. the adaptive agitating device of friction stir weld according to claim 1, it is characterised in that: further include for adjusting
The electric pressure-regulating valve of oil pressure in Oil-saving pipe；The electric pressure-regulating valve is arranged on the oil pipe between oil pump and electro hydraulic valve, and
It is connect with control system signal, realizes and adjust oil liquid pressure to control the liter of the welding mechanism connecting with piston on the sliding mechanism
Drop.
6. the adaptive agitating device of friction stir weld according to claim 1, it is characterised in that: welding mechanism and work
Spacing threshold between part is 10mm.
7. a kind of control method of the adaptive agitating device of friction stir weld, it is characterised in that:
Firstly, the spacing threshold between setting mixing needle and workpiece；
Secondly, by displacement sensor feed back stirring needle position signal control enter oil cylinder oil liquid flow so that control with
The lifting of the mixing needle of piston connection, realizes the height and position for adjusting mixing needle, to be kept stirring the spacing between needle and workpiece
Within the scope of spacing threshold.
8. the control method of the adaptive agitating device of friction stir weld according to claim 7, it is characterised in that: institute
The oil liquid flow that the stirring needle position signal control fed back by displacement sensor enters oil cylinder is stated, so that control is connect with piston
Mixing needle lifting, the height and position for adjusting mixing needle is realized, with the spacing that is kept stirring between needle and workpiece in spacing threshold
It is worth in range, refers to:
(1) when displacement sensor detects that the spacing between mixing needle and workpiece is more than spacing threshold range, then stop stirring
Needle weld job；Meanwhile oil liquid flow is increased by control, so that the decline for the mixing needle that control is connect with piston, realizes and adjusts
The height and position of mixing needle is saved, with the spacing that is kept stirring between needle and workpiece within the scope of spacing threshold；
(2) when displacement sensor detects that the spacing between mixing needle and workpiece is within the scope of spacing threshold, then driving is stirred
It mixes needle and carries out weld job.
9. the control method of the adaptive agitating device of friction stir weld according to claim 7, it is characterised in that: also
Including using the fuel injection pressure signal in pressure sensor detection oil pipe to adjust oil liquid pressure, the stirring that control is connect with piston is realized
The step of needle lifting.
10. the control method of the adaptive agitating device of friction stir weld according to claim 7, it is characterised in that:
The spacing threshold is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154893.XA CN109048038A (en) | 2018-09-30 | 2018-09-30 | A kind of adaptive agitating device and its control method of friction stir weld |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811154893.XA CN109048038A (en) | 2018-09-30 | 2018-09-30 | A kind of adaptive agitating device and its control method of friction stir weld |
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| Publication Number | Publication Date |
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| CN109048038A true CN109048038A (en) | 2018-12-21 |
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| CN201811154893.XA Pending CN109048038A (en) | 2018-09-30 | 2018-09-30 | A kind of adaptive agitating device and its control method of friction stir weld |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111250864A (en) * | 2020-02-02 | 2020-06-09 | 新昌县七星街道盈捷机械厂 | Automatic control device of steel bar electroslag press welder |
| CN111482329A (en) * | 2019-01-25 | 2020-08-04 | 本田技研工业株式会社 | Nozzle distance checking device and nozzle distance checking method |
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| US20120006883A1 (en) * | 2009-03-16 | 2012-01-12 | Kawasaki Jukogyo Kabushiki Kaisha | Apparatus and method for friction stir welding |
| CN203003339U (en) * | 2012-12-28 | 2013-06-19 | 上海胜春机械有限公司 | Servo hydraulic system of friction welding machine |
| CN103480963A (en) * | 2013-09-27 | 2014-01-01 | 重庆市科学技术研究院 | Stirring friction welding machine |
| CN104625393A (en) * | 2015-01-13 | 2015-05-20 | 清华大学 | Friction-stir welding press amount correcting method |
| CN208991962U (en) * | 2018-09-30 | 2019-06-18 | 佛山市三水区诺尔贝机器人研究院有限公司 | A kind of adaptive agitating device of friction stir weld |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120006883A1 (en) * | 2009-03-16 | 2012-01-12 | Kawasaki Jukogyo Kabushiki Kaisha | Apparatus and method for friction stir welding |
| CN203003339U (en) * | 2012-12-28 | 2013-06-19 | 上海胜春机械有限公司 | Servo hydraulic system of friction welding machine |
| CN103480963A (en) * | 2013-09-27 | 2014-01-01 | 重庆市科学技术研究院 | Stirring friction welding machine |
| CN104625393A (en) * | 2015-01-13 | 2015-05-20 | 清华大学 | Friction-stir welding press amount correcting method |
| CN208991962U (en) * | 2018-09-30 | 2019-06-18 | 佛山市三水区诺尔贝机器人研究院有限公司 | A kind of adaptive agitating device of friction stir weld |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111482329A (en) * | 2019-01-25 | 2020-08-04 | 本田技研工业株式会社 | Nozzle distance checking device and nozzle distance checking method |
| CN111250864A (en) * | 2020-02-02 | 2020-06-09 | 新昌县七星街道盈捷机械厂 | Automatic control device of steel bar electroslag press welder |
| CN111250864B (en) * | 2020-02-02 | 2021-12-17 | 山东高速新材料科技有限公司 | Automatic control device of steel bar electroslag press welder |
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