CN110977140B - Friction stir spot welding riveting tool and method for removing aluminum steel lap hook-shaped defects - Google Patents
Friction stir spot welding riveting tool and method for removing aluminum steel lap hook-shaped defects Download PDFInfo
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- CN110977140B CN110977140B CN201911256371.5A CN201911256371A CN110977140B CN 110977140 B CN110977140 B CN 110977140B CN 201911256371 A CN201911256371 A CN 201911256371A CN 110977140 B CN110977140 B CN 110977140B
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- welding
- stirring
- friction stir
- aluminum steel
- stirring pin
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/127—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding friction stir welding involving a mechanical connection
Abstract
The invention provides a friction stir spot welding riveting tool and method for removing a hook-shaped defect of aluminum steel lap joint. The welding riveting joint is reasonable in structure, the raised platform is additionally arranged on the middle lower portion of the conventional stirring head, and the stirring pin at the bottom of the platform is integrally broken when the stirring pin at the bottom of the platform lifts, so that heat is provided by friction between the bottom of the platform and an aluminum steel lapping plane, a lapping interface is broken, a welding riveting joint connection mode is realized, and the effect of removing hook defects is achieved.
Description
Technical Field
The invention relates to a welding and riveting tool for aluminum steel lap joint, in particular to a friction stir spot welding and riveting tool and method for removing hook-shaped defects of aluminum steel lap joint.
Background
With the development of new energy automobiles, light weight is one of the main directions of automobile development. However, the light-weight main material aluminum alloy has poor anti-collision capability and cannot bear long-time bumping motion of the automobile, so that the application of an aluminum steel lapping technology is urgently needed.
As a novel solid-phase welding mode, the friction stir welding has the advantages of good welding seam quality, high automation degree, small heat input and the like, and is widely applied to the high-end manufacturing fields of aerospace, high-speed rail, automobiles and the like. However, the lapping interface of the edge of the stirring pin in the conventional friction stir welding can not be broken in the welding process, and inherent defects of the friction stir welding lapping can be formed, which are called Hook defects in academia, namely Hook defects and interface distortion.
Therefore, the present invention provides a new technical solution to the above problems.
Disclosure of Invention
The invention aims to provide a friction stir spot welding riveting tool which is reasonable in structure and convenient to operate and can be used for removing the defects of aluminum steel lap joint hooks.
The invention is realized by the following technical scheme:
the utility model provides a get rid of friction stir spot welding riveting tool of hook-shaped defect of aluminium steel overlap joint, includes stirring head, protruding plane and stirring needle, the protruding plane of inferior part connection in the stirring head, protruding plane bottom is the stirring needle.
Further, the stirring pin is a conventional frustum-shaped stirring pin.
The spot welding method of the friction stir spot welding riveting tool for removing the hook-shaped defects of the lap joint of the aluminum steel comprises the following steps:
(1) processing a product according to a drawing, and performing pre-welding treatment;
(2) assembling an aluminum steel lapping tool, placing an aluminum plate on the upper part, placing a steel plate on the lower part, and assembling by using a pressing plate, so that the materials are prevented from moving in the welding process;
(3) designing a stirring head according to the design criteria of the thickness of the aluminum plate and the position of the raised plane;
(4) welding, wherein in the welding process, the surface of the shaft shoulder is ensured to be rubbed with the surface of the aluminum material, the lower surface of the raised plane is rubbed with steel, and the stirring needle at the bottom is pricked into the steel;
(5) and the stirring pin is broken to the inside of the welding line by lifting the cutter, so that the welding, riveting and connecting of materials are realized.
Further, in the step (1), the pre-welding treatment is to wipe the welding position with acetone or alcohol to remove oil stains on the surface; and (5) polishing the outer edge by using sand paper, and removing burrs on the edge to ensure the assembly effect.
Further, in the step (4), the range of the spindle rotation speed is as follows: 200 to 3000rpm, and is maintained for 2 to 20 seconds.
Further, in the step (5), the speed of lifting the cutter is 30-300 mm/min.
The invention has the beneficial effects that: the structure of the invention is reasonable, the raised platform is added at the middle lower part of the conventional stirring head, and the stirring pin at the bottom of the platform is integrally broken when lifting the cutter, so that the friction between the bottom of the platform and the aluminum steel lapping plane provides heat to break the lapping interface, thus realizing the welding-riveting combined connection mode and achieving the effect of removing the hook defect.
Drawings
FIG. 1 is a front view of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Wherein: 1. stirring head, 2, raised plane, 3, stirring pin.
Detailed Description
The invention is further described in the following description with reference to the drawings.
As shown in figures 1-2, the friction stir spot welding riveting tool for removing the hook-shaped defects of the lap joint of the aluminum steel comprises a stirring head 1, a convex plane 2 and a stirring pin 3, wherein the convex plane 2 is connected with the middle lower part of the stirring head 1, and the stirring pin 3 is arranged at the bottom of the convex plane 2.
In the present embodiment, the pin 3 is a conventional frustum-shaped pin.
A spot welding method of a friction stir spot welding riveting tool for removing a hook-shaped defect of aluminum steel lap joint comprises the following steps:
(1) processing a product according to a drawing, and performing pre-welding treatment;
(2) assembling an aluminum steel lapping tool, placing an aluminum plate on the upper part, placing a steel plate on the lower part, and assembling by using a pressing plate, so that the materials are prevented from moving in the welding process;
(3) designing a stirring head according to the design criteria of the thickness delta of the aluminum plate and the position of the convex plane;
(4) welding, wherein in the welding process, the surface of the shaft shoulder is ensured to be rubbed with the surface of the aluminum material, the lower surface of the raised plane 2 is rubbed with the steel material, and the stirring needle at the bottom is pricked into the steel material;
(5) and (4) lifting the cutter to break the stirring pin to the inside of the welding line, so as to realize the welding, riveting and connecting of materials.
In this embodiment, in the step (1), the pre-welding treatment is to wipe the welding position with acetone or alcohol to remove oil stains on the surface; and (5) polishing the outer edge by using sand paper, and removing burrs on the edge to ensure the assembly effect.
In this embodiment, in step (3), the design rule of the positions of the convex planes is h1 ═ δ - (0.1 to 0.3mm), D ═ D (0.1 to 0.8) × D, and 0.1mm ≦ h2 ≦ 1 mm.
In this embodiment, in step (4), the range of the spindle rotation speed is: 200 to 3000rpm, and is maintained for 2 to 20 seconds.
In the embodiment, in the step (5), the speed of lifting the cutter is 30-300 mm/min.
The structure of the invention is reasonable, the raised platform is added at the middle lower part of the conventional stirring head, and the stirring pin at the bottom of the platform is integrally broken when lifting the cutter, so that the friction between the bottom of the platform and the aluminum steel lapping plane provides heat to break the lapping interface, thus realizing the welding-riveting combined connection mode and achieving the effect of removing the hook defect.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. A friction stir spot welding riveting method for removing aluminum steel lap hook-shaped defects is characterized in that a friction stir spot welding riveting tool used by the method for removing aluminum steel lap hook-shaped defects comprises a stirring head, a convex plane and a stirring pin, and is characterized in that: the middle lower part of the stirring head is connected with a raised plane, the bottom of the raised plane is provided with a stirring pin, and the stirring pin is a conventional frustum-shaped stirring pin; the method comprises the following steps:
(1) processing a product according to a drawing, and performing pre-welding treatment;
(2) assembling an aluminum steel lapping tool, placing an aluminum plate on the upper part, placing a steel plate on the lower part, and assembling by using a pressing plate, so that the materials are prevented from moving in the welding process;
(3) designing a stirring head according to the design criteria of the thickness of the aluminum plate and the position of the raised plane;
(4) welding, wherein in the welding process, the surface of the shaft shoulder of the stirring head is ensured to be rubbed with the surface of the aluminum plate, the lower surface of the raised plane is rubbed with the steel plate, and the stirring needle at the bottom is pricked into the steel plate;
(5) the stirring pin is broken to the inside of the welding line by lifting the cutter, so that the welding, riveting and connecting of materials are realized;
in the step (1), the pre-welding treatment is to wipe the welding position by using acetone or alcohol, remove oil stains on the surface, polish the outer edge by using abrasive paper, remove burrs on the edge and ensure the assembly effect; in the step (4), the range of the rotating speed of the main shaft is as follows: 200-3000 rpm, and keeping for 2-20 s; in the step (5), the speed of lifting the cutter is 30-300 mm/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256371.5A CN110977140B (en) | 2019-12-10 | 2019-12-10 | Friction stir spot welding riveting tool and method for removing aluminum steel lap hook-shaped defects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256371.5A CN110977140B (en) | 2019-12-10 | 2019-12-10 | Friction stir spot welding riveting tool and method for removing aluminum steel lap hook-shaped defects |
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| CN110977140A CN110977140A (en) | 2020-04-10 |
| CN110977140B true CN110977140B (en) | 2022-06-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118414A (en) * | 1994-09-09 | 1996-03-13 | 宝山钢铁(集团)公司 | Welding and riveting process for steel plate with organic coating |
| CN101817142A (en) * | 2010-05-20 | 2010-09-01 | 上海交通大学 | Self-piercing frictional rivet welding connecting device |
| CN104400215A (en) * | 2014-11-26 | 2015-03-11 | 哈尔滨工业大学 | Stirring head for friction stir overlap welding for reducing size of interface defect and welding method thereof |
| CN107876966A (en) * | 2017-12-19 | 2018-04-06 | 沈阳航空航天大学 | It is a kind of to reduce welding method of the agitating friction welding to lap joint defect |
| CN107999953A (en) * | 2017-12-06 | 2018-05-08 | 昆山万洲特种焊接有限公司 | Agitating friction short section weldering soldering set is strengthened in a kind of variable cross-section crosspointer riveting |
| CN108838510A (en) * | 2018-08-01 | 2018-11-20 | 沈阳航空航天大学 | A kind of welder and method improving the agitating friction weldering hook-shaped defect of lap joint |
-
2019
- 2019-12-10 CN CN201911256371.5A patent/CN110977140B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1118414A (en) * | 1994-09-09 | 1996-03-13 | 宝山钢铁(集团)公司 | Welding and riveting process for steel plate with organic coating |
| CN101817142A (en) * | 2010-05-20 | 2010-09-01 | 上海交通大学 | Self-piercing frictional rivet welding connecting device |
| CN104400215A (en) * | 2014-11-26 | 2015-03-11 | 哈尔滨工业大学 | Stirring head for friction stir overlap welding for reducing size of interface defect and welding method thereof |
| CN107999953A (en) * | 2017-12-06 | 2018-05-08 | 昆山万洲特种焊接有限公司 | Agitating friction short section weldering soldering set is strengthened in a kind of variable cross-section crosspointer riveting |
| CN107876966A (en) * | 2017-12-19 | 2018-04-06 | 沈阳航空航天大学 | It is a kind of to reduce welding method of the agitating friction welding to lap joint defect |
| CN108838510A (en) * | 2018-08-01 | 2018-11-20 | 沈阳航空航天大学 | A kind of welder and method improving the agitating friction weldering hook-shaped defect of lap joint |
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Effective date of registration: 20230419 Address after: Room 3, No. 99, Shaojing Road, Kunshan Development Zone, Suzhou City, Jiangsu Province, 215333 Patentee after: Suzhou Wanzhi New Energy Technology Co.,Ltd. Address before: 215300 room 10, 188 Xijiang Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: KUNSHAN WORLD-WIDE SPECIAL WELDING CO.,LTD. |
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