CN111069763A - Add hot type and backfill friction stir welding instrument - Google Patents
Add hot type and backfill friction stir welding instrument Download PDFInfo
- Publication number
- CN111069763A CN111069763A CN202010019045.9A CN202010019045A CN111069763A CN 111069763 A CN111069763 A CN 111069763A CN 202010019045 A CN202010019045 A CN 202010019045A CN 111069763 A CN111069763 A CN 111069763A
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- friction stir
- stir welding
- heating
- welding tool
- machine head
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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
-
- 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
- B23K20/26—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention relates to a heating type backfill friction stir welding tool, which comprises a machine head, a stirring pin, a shaft shoulder, a lining and a heating lantern ring, wherein the heating type backfill friction stir welding tool comprises a machine head, a stirring pin, a shaft shoulder, a lining and a heating lantern ring; the stirring pin, the shaft shoulder and the bushing are arranged on the machine head; the stirring pin and the shaft shoulder are rotatably connected with the machine head, the lining is fixedly connected with the machine head, and the heating lantern ring is sleeved on the outer wall of the lining. The heating lantern ring is arranged to heat the bushing, the welding spot position of the welded material is preheated before welding, and the temperature of the position is raised; thus reducing the residual stress on the material and reducing the generation of cold cracks; meanwhile, the position is softened, so that the vertical upsetting force applied to the stirring pin and the shaft shoulder is reduced, and a welding tool is protected.
Description
Technical Field
The invention relates to a backfill type friction stir welding tool, in particular to a heating type backfill friction stir welding tool.
Background
Friction Stir Spot Welding (FSSW) is an innovative Welding technique that has been recently developed based on "linear" Friction Stir Welding. FSSW can form a spot welded lap joint with a weld seam appearance similar to resistance spot welding commonly applied to aluminum alloy components, and thus has high utility and research significance.
The backfill type welding method realizes the welding of the joint by controlling the relative motion among all the components of the stirring head. The stirring head mainly comprises a stirring pin, a shaft shoulder and an outermost lining, wherein a cavity is formed by the relative movement of the stirring pin and the shaft shoulder in the welding process, the plastic material is fused and stirred and is filled into the cavity, and the plastic material is refilled into a welding area due to the relative movement of the stirring pin and the shaft shoulder, so that the welding of the welded material at the point is completed in the process.
For example, the chinese invention patent application with the patent application number of 201710099857.7 discloses a wire-filling backfill type friction stir spot welding method and tool, the welding tool comprises a stirring pin, a stirring sleeve (shaft shoulder) movably sleeved on the stirring pin, and a pressing sleeve (lining) movably sleeved on the stirring sleeve (shaft shoulder); the bottom side wall of the pressing sleeve (bushing) is provided with a wire feeding hole, the stirring needle and the stirring sleeve (shaft shoulder) can be upwards withdrawn for a certain distance relative to the pressing sleeve (bushing) and a space for placing the filling material fed from the wire feeding hole is formed at the bottom of the pressing sleeve (bushing). According to the invention, the hole is formed in the pressing sleeve (bushing) for wire filling, the retraction space between the stirring needle and the stirring sleeve (shaft shoulder) is adjusted, wire filling welding is realized, and material loss in the welding process is compensated, so that surface pits and annular grooves of the friction stir spot welding joint are eliminated, and the mechanical property and the attractiveness of the joint are effectively improved.
The backfill type friction stir spot welding tool disclosed in the invention patent application needs to frequently weld a single point position in use, and in the process, when the temperature of a welded material is lower, the material has larger residual stress, and a welding seam is easy to have cold cracks after welding; meanwhile, the stirring pin and the shaft shoulder can be subjected to larger vertical upsetting force, deformation is easy to generate, the shaft shoulder and the lining are easy to abrade seriously, and the service life of a welding tool is shortened.
Disclosure of Invention
The invention aims to provide a heating type backfill friction stir welding tool, which can heat a bushing by arranging a heating component, can heat the welding point position of a welded material in advance before welding, and raises the temperature of the position; thus reducing the residual stress on the material and reducing the generation of cold cracks; meanwhile, the position is softened, so that the vertical upsetting force applied to the stirring pin and the shaft shoulder is reduced, and a welding tool is protected.
The above object of the present invention is achieved by the following technical solutions: a heating type backfill friction stir welding tool comprises a machine head, a stirring pin, a shaft shoulder and a lining, wherein the stirring pin, the shaft shoulder and the lining are arranged on the machine head; the stirring pin, the shaft shoulder and the machine head are rotatably connected, the lining is fixedly connected with the machine head, and the stirring pin and the shaft shoulder also comprise a heating lantern ring which is sleeved on the outer wall of the lining.
By adopting the technical scheme, when in use, the heating collar heats the lining, so that the lining has a certain temperature; during spot welding, the lining contacts with the material to be welded, the area is heated within 1.5-3 seconds to soften the material, and then the stirring pin and the shaft shoulder are matched to weld the spot. Compared with the prior art, when the temperature of the material is lower, the welding spot position of the material can be heated and softened in advance, so that the residual stress on the material is reduced, and the generation of cold cracks can be reduced after welding; meanwhile, the welding spot is softened, so that the vertical upsetting force applied to the stirring pin and the shaft shoulder is reduced, and a welding tool is protected.
The bushing is heated, and then the heat of the bushing is utilized to heat the welding spot area, so that the obvious advantages are achieved; on one hand, the high temperature of the bushing does not affect the stirring pin and the shaft shoulder, so that the stirring pin and the shaft shoulder have reliable mechanical strength and can reliably complete welding; on the other hand, the tubular structure of the bushing can form a circular heating area on the welding spot area, heat can be concentrated in the bushing, the bushing is not easy to run off, and the heating efficiency is high.
The invention is further configured to: the heating lantern ring is an electromagnetic induction heater.
Through adopting above-mentioned technical scheme, electromagnetic induction heater is the heating controller based on the electromagnetic induction heating principle manufacturing, and it encircles and can utilize its skin effect to heat for the bush fast effectual in the bush outside, and heating efficiency is higher.
The invention is further configured to: the bush is provided with the fender edge in the protrusion of the one end that is close to the aircraft nose.
Through adopting above-mentioned technical scheme, can reduce the transmission of heat to the aircraft nose direction.
The invention is further configured to: the other end of the bushing is provided with an external thread and is matched with a baffle ring with an internal thread, and two ends of the electromagnetic induction heater are limited between the baffle edge and the baffle ring.
Through adopting above-mentioned technical scheme, be convenient for install and change the electromagnetic induction heater.
The invention is further configured to: the outer wall of the electromagnetic induction heater is provided with a rectangular connecting ring, and one side of the connecting ring is attached to the blocking edge and fixedly connected with the blocking edge.
By adopting the technical scheme, the rotation of the electromagnetic induction heater can be limited, so that the electromagnetic induction heater is not influenced by vibration in the welding process.
The invention is further configured to: there are two connection rings in total.
Through adopting above-mentioned technical scheme, it is more firm to make the electromagnetic induction heater fixed.
The invention is further configured to: the connecting ring is provided with a screw and is fixedly connected with the blocking edge through the screw.
Through adopting above-mentioned technical scheme, the go-between is comparatively convenient with keeping off the fixed of following.
The invention is further configured to: a wire groove is formed in the handpiece, a wire pressing plate is arranged on the wire groove, the wire pressing plate is arranged on the wire groove in a spanning mode, and two ends of the wire pressing plate are fixedly connected with the handpiece; the electromagnetic induction heater comprises a power line, and the power line is clamped between the wire groove and the wire pressing plate.
By adopting the technical scheme, the power line can be prevented from being scalded by the lining sleeve or damaged by the stirring needle and the shaft shoulder during welding.
The invention is further configured to: the two ends of the wire pressing plate are provided with screws and are fixedly connected with the machine head through the screws.
Through adopting above-mentioned technical scheme, make the fixed comparatively convenient of line ball board.
In conclusion, the invention has the following beneficial effects:
1. the heating lantern ring is arranged, when in spot welding, the bushing is in contact with a welded material, the area is heated within 1.5-3 seconds, the material is softened, and then the stirring pin and the shaft shoulder are matched to weld the point position, compared with the prior art, when the temperature of the material is lower, the welding point position of the material can be heated and softened in advance, so that the residual stress on the material is reduced, the generation of cold cracks can be reduced after welding, meanwhile, the welding point position is softened, the vertical upsetting force applied to the stirring pin and the shaft shoulder is reduced, and a welding tool is protected;
2. an electromagnetic induction heater is selected as a heating lantern ring, so that the lining has high heating efficiency;
3. the arrangement of the thread part and the baffle ring makes the installation and the replacement of the electromagnetic induction heater more convenient.
Drawings
FIG. 1 is a schematic structural view of a heated backfill friction stir welding tool;
fig. 2 is an enlarged view of a portion a in fig. 1.
In the figure, 1, a machine head; 2. a stirring pin; 3. a shaft shoulder; 4. a bushing; 40. blocking edges; 41. a threaded portion; 5. heating the collar; 50. a connecting ring; 6. and (4) a baffle ring.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Examples
Referring to fig. 1 and 2, a heating type backfill friction stir welding tool comprises a machine head 1, a stirring pin 2, a shaft shoulder 3, a lining 4 and a heating lantern ring 5; the stirring needle 2, the shaft shoulder 3 and the bush 4 are arranged on the machine head 1; the stirring needle 2 and the shaft shoulder 3 are rotationally connected with the machine head 1, and the bushing 4 is fixedly connected with the machine head 1; the heating lantern ring 5 is sleeved on the outer wall of the lining 4.
The heating collar 5 may be a resistance type heater, and in the present embodiment, the heating collar 5 is an Electromagnetic induction heater (Electromagnetic induction heater), which is a heating controller manufactured based on an Electromagnetic induction heating principle. The principle of electromagnetic induction heating is that alternating current generated by an induction heating power supply generates an alternating magnetic field through an inductor (namely a coil), a magnetic conductive object is arranged in the inductor to cut alternating magnetic lines, so that alternating current (namely eddy current) is generated inside the object, the eddy current enables atoms inside the object to move randomly at high speed, and the atoms collide with each other and rub to generate heat energy, thereby achieving the effect of heating the object. The heating method is a heating method which converts electric energy into magnetic energy and leads the heated steel body to induce the magnetic energy to generate heat. The method fundamentally solves the problem of low efficiency of resistance type heating by a heat conduction mode, such as an electric heating piece, an electric heating ring and the like.
Traditional heating trade, the universal adoption be resistance wire and quartzy heating methods, and this kind of traditional heating methods, its thermal efficiency is than lower, and resistance wire and quartzy mainly lean on the circular telegram back, self generate heat then again heat transfer to the feed cylinder on to play the effect of heating article, the heat utilization ratio of this kind of heating effect is only about 50% at most, in the air is all gived off to the heat about 50% in addition, the electric energy loss of all traditional resistance wire heating methods reaches more than 50%. And through electromagnetic induction heating, produce the magnetic field through the electric current for iron metal pipeline self generates heat, and thermal-insulated material in addition prevents the radiating of pipeline heat, and the heat utilization ratio is up to more than 95%, and the effect of electricity-saving can reach more than 50% in theory, but considers that the energy conversion efficiency of the electromagnetic induction heating controller of different masses is not too the same to and different production facility and environment, and all electromagnetic heating energy-conserving effects can reach 30% at least generally, can reach 70% the highest.
The electromagnetic induction heater is sleeved on the outer wall of the lining 4; the bushing 4 is provided with a blocking edge 40 at one end close to the machine head 1 in a protruding mode, the other end of the bushing 4 is provided with external threads and matched with a blocking ring 6 with internal threads, and two ends of the electromagnetic induction heater are limited between the blocking edge 40 and the blocking ring 6.
Two rectangular connecting rings 50 are arranged on the outer wall of the electromagnetic induction heater, one side of each connecting ring 50 is attached to the blocking edge 40 and is provided with a screw, and the connecting rings are fixedly connected with the blocking edge 40 through the screws; the rotation of the electromagnetic induction heater can be limited by the arrangement, so that the electromagnetic induction heater is not influenced by vibration in the welding process.
A wire groove is formed in the machine head 1, a wire pressing plate is arranged on the wire groove, the wire pressing plate is arranged on the wire groove in a spanning mode, and screws are arranged at two ends of the wire pressing plate and fixedly connected with the machine head 1 through the screws; the power cord of electromagnetic induction heater is fixed in between wire casing and the line ball board, can avoid like this that the power cord is scalded by bush 4 or is damaged by pin 2, shaft shoulder 3 when the welding.
When the bushing is used in the embodiment, the heating lantern ring 5 heats the bushing 4 to enable the bushing 4 to have a certain temperature; during spot welding, the lining 4 contacts with the welded material, the area is heated within 1.5-3 seconds to soften the material, and then the stirring pin 2 and the shaft shoulder 3 are matched to weld the point. Compared with the prior art, when the temperature of the material is lower, the welding spot position of the material can be heated and softened in advance, so that the residual stress on the material is reduced, and the generation of cold cracks can be reduced after welding; meanwhile, the welding spot is softened, so that the vertical upsetting force applied to the stirring pin and the shaft shoulder is reduced, and a welding tool is protected.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A heating type backfill friction stir welding tool comprises a machine head (1), a stirring pin (2), a shaft shoulder (3) and a lining (4), wherein the stirring pin (2), the shaft shoulder (3) and the lining (4) are arranged on the machine head (1); stirring pin (2), shaft shoulder (3) are rotated with aircraft nose (1) and are connected, bush (4) and aircraft nose (1) fixed connection, its characterized in that: the heating device also comprises a heating lantern ring (5), and the heating lantern ring (5) is sleeved on the outer wall of the lining (4).
2. A heated backfilling friction stir welding tool according to claim 1 wherein: the heating lantern ring (5) is an electromagnetic induction heater.
3. A heated backfilling friction stir welding tool according to claim 2 wherein: one end of the bushing (4) close to the machine head (1) is convexly provided with a blocking edge (40).
4. A heated backfilling friction stir welding tool according to claim 3 wherein: the other end of the bushing (4) is provided with an external thread and is matched with a baffle ring (6) with an internal thread, and the two ends of the electromagnetic induction heater are limited between the baffle edge (40) and the baffle ring (6).
5. A heated backfilling friction stir welding tool according to claim 3 wherein: the outer wall of the electromagnetic induction heater is provided with a rectangular connecting ring (50), and one side of the connecting ring (50) is attached to the blocking edge (40) and is fixedly connected with the blocking edge (40).
6. A heated backfilling friction stir welding tool according to claim 5 wherein: the connecting rings (50) are two in total.
7. A heated backfilling friction stir welding tool according to claim 5 or 6 wherein: the connecting ring (50) is provided with a screw and is fixedly connected with the blocking edge (40) through the screw.
8. A heated backfilling friction stir welding tool according to claim 2 wherein: a wire groove is formed in the machine head (1), a wire pressing plate is arranged on the wire groove, the wire pressing plate is arranged on the wire groove in a spanning mode, and two ends of the wire pressing plate are fixedly connected with the machine head (1); the electromagnetic induction heater comprises a power line, and the power line is clamped between the wire groove and the wire pressing plate.
9. A heated backfilling friction stir welding tool according to claim 8 wherein: the two ends of the wire pressing plate are provided with screws and are fixedly connected with the machine head (1) through the screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019045.9A CN111069763A (en) | 2020-01-08 | 2020-01-08 | Add hot type and backfill friction stir welding instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010019045.9A CN111069763A (en) | 2020-01-08 | 2020-01-08 | Add hot type and backfill friction stir welding instrument |
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| CN111069763A true CN111069763A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010019045.9A Pending CN111069763A (en) | 2020-01-08 | 2020-01-08 | Add hot type and backfill friction stir welding instrument |
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| CN (1) | CN111069763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247337A (en) * | 2020-09-25 | 2021-01-22 | 广州瑞松智能科技股份有限公司 | Electromagnetic heating static shaft shoulder friction stir welding mechanism and method |
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| CN1251549A (en) * | 1997-04-04 | 2000-04-26 | 依赛彼·阿克蒂博拉格公司 | Method and apparatus for friction stir welding |
| CN103108720A (en) * | 2010-08-02 | 2013-05-15 | 梅加斯特尔技术公司 | System for using high rotary speed for minimizing the load during friction stir welding |
| CN103801816A (en) * | 2012-11-07 | 2014-05-21 | 上海航天设备制造总厂 | Stirring friction spot welding robot device and method utilizing device for welding |
| CN105108316A (en) * | 2015-09-15 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Accumulated chipping removing device of stir friction spot welding apparatus |
| CN105562954A (en) * | 2016-03-06 | 2016-05-11 | 南京理工大学 | Compound robot heat source welding system by double methods of friction stud and friction stir |
| CN106825906A (en) * | 2017-02-23 | 2017-06-13 | 广东省焊接技术研究所（广东省中乌研究院） | One kind silk filling backfill formula friction stir spot welding method and instrument |
| US20180099349A1 (en) * | 2016-10-06 | 2018-04-12 | Scott M. Packer | Method and apparatus for friction stir welding on conventional machining equipment |
| CN108971741A (en) * | 2018-08-29 | 2018-12-11 | 哈尔滨工业大学（威海） | A kind of static shaft shoulder agitation soldering method of T junction fillet weld |
| CN109202264A (en) * | 2017-09-15 | 2019-01-15 | 中国航空制造技术研究院 | A kind of stirring friction spot welding device and friction stir spot welding method |
| CN109317815A (en) * | 2018-11-09 | 2019-02-12 | 南京航空航天大学 | A kind of method agitating friction weldering welder and welded using the device |
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2020
- 2020-01-08 CN CN202010019045.9A patent/CN111069763A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251549A (en) * | 1997-04-04 | 2000-04-26 | 依赛彼·阿克蒂博拉格公司 | Method and apparatus for friction stir welding |
| CN103108720A (en) * | 2010-08-02 | 2013-05-15 | 梅加斯特尔技术公司 | System for using high rotary speed for minimizing the load during friction stir welding |
| CN103801816A (en) * | 2012-11-07 | 2014-05-21 | 上海航天设备制造总厂 | Stirring friction spot welding robot device and method utilizing device for welding |
| CN105108316A (en) * | 2015-09-15 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Accumulated chipping removing device of stir friction spot welding apparatus |
| CN105562954A (en) * | 2016-03-06 | 2016-05-11 | 南京理工大学 | Compound robot heat source welding system by double methods of friction stud and friction stir |
| US20180099349A1 (en) * | 2016-10-06 | 2018-04-12 | Scott M. Packer | Method and apparatus for friction stir welding on conventional machining equipment |
| CN106825906A (en) * | 2017-02-23 | 2017-06-13 | 广东省焊接技术研究所（广东省中乌研究院） | One kind silk filling backfill formula friction stir spot welding method and instrument |
| CN109202264A (en) * | 2017-09-15 | 2019-01-15 | 中国航空制造技术研究院 | A kind of stirring friction spot welding device and friction stir spot welding method |
| CN108971741A (en) * | 2018-08-29 | 2018-12-11 | 哈尔滨工业大学（威海） | A kind of static shaft shoulder agitation soldering method of T junction fillet weld |
| CN109317815A (en) * | 2018-11-09 | 2019-02-12 | 南京航空航天大学 | A kind of method agitating friction weldering welder and welded using the device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247337A (en) * | 2020-09-25 | 2021-01-22 | 广州瑞松智能科技股份有限公司 | Electromagnetic heating static shaft shoulder friction stir welding mechanism and method |
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Application publication date: 20200428 |