CN113732233B - Self-filling friction rivet welding device with rotation direction limiting function and rivet welding method - Google Patents
Self-filling friction rivet welding device with rotation direction limiting function and rivet welding method Download PDFInfo
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- CN113732233B CN113732233B CN202110905475.5A CN202110905475A CN113732233B CN 113732233 B CN113732233 B CN 113732233B CN 202110905475 A CN202110905475 A CN 202110905475A CN 113732233 B CN113732233 B CN 113732233B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/027—Setting rivets by friction heating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/08—Riveting by applying heat, e.g. to the end parts of the rivets to enable heads to be formed
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Abstract
The invention provides a self-filling friction rivet welding device with rotation direction limiting function and a rivet welding method, and belongs to the technical field of friction rivet welding. The problem of metal matrix composite be difficult to realize through traditional welded mode with other material's effective connection is solved. The rivet welding device comprises a rivet welding tool, an upper riveting plate, a lower riveting plate, a non-convolution body riveting hole and a rivet, wherein the non-convolution body riveting hole is formed in the upper riveting plate and the lower riveting plate, the rivet is arranged in the non-convolution body riveting hole and penetrates through the upper riveting plate and the lower riveting plate, and the rivet welding tool is arranged right above the non-convolution body riveting hole and the rivet and is connected with the rivet. It is mainly used for self-filling friction rivet welding.
Description
Technical Field
The invention belongs to the technical field of friction rivet welding, and particularly relates to a self-filling friction rivet welding device with rotation direction limiting function and a rivet welding method.
Background
The metal matrix composite has wide application in aerospace key blade structures and precision measurement mechanisms due to excellent dimensional stability and good high-temperature mechanical properties, but the material is often extremely poor in weldability and difficult to realize effective connection with other materials in a traditional welding mode. The friction rivet welding is used as a solid phase connection method combining double advantages of mechanical interlocking and metallurgical connection, the riveting impact force is small in the process, cracking is not easy to cause, the welding temperature is low, the residual stress is small, and the method has remarkable advantages in the aspect of being applied to high-specific-strength low-ductility materials such as metal matrix composite materials and the like. In addition, due to the large plastic deformation and the deformation spontaneous heating effect thereof in the friction rivet welding process, the rivet material can be fully subjected to thermal plasticizing upsetting to fill rivet holes so as to improve the interface strength. Therefore, if the rivet hole is designed to be a non-rotating body structure, the rivet hole is fully filled with the rivet plasticizing, so that the rotating self-locking characteristic is brought, the rivet welding structure can bear certain torque, and the rivet welding structure has a series of advantages of excellent guidance, good energy transfer and good deformation stability and the like, so that the overall dimensional stability of the structure is further improved, and the application range and the application depth of the friction rivet welding in the field of members with high dimensional stability requirements are greatly expanded.
Disclosure of Invention
The invention provides a self-filling friction rivet welding device with a rotary limiting function and a rivet welding method, aiming at solving the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the self-filling friction rivet welding device with the rotation direction limiting function comprises a rivet welding tool, an upper rivet plate, a lower rivet plate, a non-convolution body rivet hole and a rivet, wherein the non-convolution body rivet hole is formed in the upper rivet plate and the lower rivet plate, the rivet is arranged in the non-convolution body rivet hole and penetrates through the upper rivet plate and the lower rivet plate, and the rivet welding tool is arranged right above the non-convolution body rivet hole and the rivet and is connected with the rivet.
Still further, the rivet welding instrument includes clamping part, transition portion and axle shoulder, be provided with locating plane on the clamping part, clamping part and axle shoulder are connected to the transition portion, be provided with the radiating groove of a plurality of concentric circles groove structures in the transition portion, be provided with the fillet on the axle shoulder, the shrinkage pool has been seted up to axle shoulder bottom surface, be provided with the bump in the shrinkage pool.
Furthermore, the non-revolution body riveting hole is a secondary rotation symmetry riveting hole, a quartic rotation symmetry riveting hole or a sextic rotation symmetry riveting hole.
Furthermore, the rivet comprises a rivet cylinder and a lower rivet cap, the rivet cylinder is connected with the lower rivet cap, and a positioning groove is formed in the center of the end face of the rivet cylinder.
Furthermore, the rivet welding tool is made of high-speed tool steel, hard alloy, tungsten-rhenium alloy or polycrystalline cubic boron nitride, and the material hardness of the rivet welding tool is not lower than that of the rivet.
Furthermore, the rivet is made of nickel-based high-temperature alloy, and the upper riveting plate and the lower riveting plate are made of metal-based composite materials.
Furthermore, the length of the rivet is larger than the depth of the non-convolution body riveting hole, the diameter of the rivet is smaller than the inner diameter of the non-convolution body riveting hole, and the volume of the rivet protruding out of the upper riveting plate is not smaller than the unfilled volume of the non-convolution body riveting hole.
The invention also discloses a rivet welding method of the self-filling friction rivet welding device with the rotation direction limiting function, which comprises the following steps:
step 1: the rivet is pre-arranged in the non-revolution body riveting hole and penetrates through the upper riveting plate and the lower riveting plate;
step 2: placing a rivet welding tool right above the non-convolution body rivet hole and the rivet, aligning the axis of the rivet welding tool with the axis of the non-convolution body rivet hole, and connecting the rivet welding tool with the rivet;
and step 3: the rivet welding tool rotates and presses down at a certain speed until the shaft shoulder part is at a certain distance from the upper surface of the upper rivet plate;
and 4, step 4: the rivet welding tool and the rivet generate rotary friction and generate deformation heat, so that the rivet is thermoplasticized and automatically fills the non-revolving body rivet hole under the extrusion action of the rivet welding tool, and a rotary self-locking structure is formed;
and 5: and the rivet welding tool is drawn back, and the upper rivet plate, the lower rivet plate, the non-revolving body rivet hole and the deformed rivet form a rivet welding structure with a revolving limiting effect.
Furthermore, the rotation speed of the rivet welding tool is 50-20000 rpm, the pressing speed is 0.1-1000 mm/min, and the rivet welding termination condition is that the distance between the shaft shoulder and the upper surface of the upper riveting plate is 0.01-2 mm.
Furthermore, argon or helium is used as a gas protection measure in the rivet welding process, and a flame broil or electromagnetic induction heating method can be adopted for auxiliary heating in the rivet welding process.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problem that the metal matrix composite material is difficult to realize effective connection with other materials by the traditional welding mode. The invention utilizes large plastic deformation and the deformation spontaneous heating effect thereof to promote the rivet to be fully thermoplastic-softened, and the rivet is filled into the rivet hole with the rotation limiting effect by combining the downward pressing of the rivet welding tool, so that the high-quality friction rivet welding joint is obtained and the rotation self-locking structure is formed.
The rivet welding tool rotates at a high speed to provide shape-changing heat and slowly presses down to form the rivet welding joint, the joint has the advantages of both riveting mechanical interlocking and welding metallurgical connection, the impact force is small in the process, cracking is not easy to cause, the peak temperature is low, the melting process does not exist, the residual stress of the joint is small, and the metal matrix composite connecting piece can be effectively processed;
according to the invention, through the design of the rivet hole of the non-revolving body, the rivet is subjected to thermal plasticizing and self-filling to the rivet hole to form a rotary self-locking structure, so that the rivet welding structure can bear a certain torque, and has a series of advantages of excellent guidance, good energy transfer and good deformation stability, and the like, thereby further improving the overall dimensional stability of the structure;
the invention has wide application range, not only can be applied to the connection of high-melting-point low-plasticity materials such as metal matrix composite materials, but also can be applied to the self-filling friction rivet welding with rotation direction limiting of traditional alloy materials such as aluminum, aluminum alloy, steel and the like.
Drawings
FIG. 1 is a schematic view of a rivet welding method of a self-filling friction rivet welding device with a rotation direction limiting function according to the present invention;
FIG. 2 is a schematic view of a rivet welding tool according to the present invention;
FIG. 3 is a schematic view of a non-convolution rivet hole structure according to the present invention;
fig. 4 is a schematic view of the rivet structure according to the present invention.
1: rivet welding tool, 1-1: clamping part, 1-1-1: orientation flat, 1-2: transition, 1-2-1: heat sink, 1-3: shaft shoulder, 1-3-1: round corner, 1-3-2: concave hole, 1-3-3: bump, 2: go up riveting board, 3: lower riveting plate, 4: non-convolution rivet hole, 4-A: secondary rotational symmetry riveting hole, 4-B: four-time rotational symmetry riveting hole, 4-C: six-time rotationally symmetrical riveting hole, 5: rivet, 5-1: rivet cylinder, 5-1-1: positioning groove, 5-2: and (4) a lower rivet cap.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention.
Referring to fig. 1-4 to illustrate the present embodiment, a self-filling friction rivet welding device with rotation direction limiting comprises a rivet welding tool 1, an upper rivet plate 2, a lower rivet plate 3, a non-convolution rivet hole 4 and a rivet 5, wherein the non-convolution rivet hole 4 is arranged in each of the upper rivet plate 2 and the lower rivet plate 3, the rivet 5 is arranged in the non-convolution rivet hole 4 and penetrates through the upper rivet plate 2 and the lower rivet plate 3, and the rivet welding tool 1 is arranged right above the non-convolution rivet hole 4 and the rivet 5 and connected with the rivet 5.
As shown in fig. 1 and 2, the rivet welding tool 1 comprises a clamping portion 1-1, a transition portion 1-2 and a shaft shoulder portion 1-3, wherein a positioning plane 1-1-1 is arranged on the clamping portion 1-1, and the rivet welding tool can be connected to a structure including but not limited to a lathe, a milling machine, a drilling machine, a friction stir welding machine and the like, and has the characteristic that the structure can be machined according to the clamping requirements of the machine tool. The transition portion 1-2 is connected with the clamping portion 1-1 and the shaft shoulder portion 1-3, and a plurality of heat dissipation grooves 1-2-1 with concentric circular groove structures are arranged on the transition portion 1-2 to avoid overheating and failure of the rivet welding tool 1. The shaft shoulder part 1-3 is used for directly contacting and rubbing the rivet 5 and promoting the rivet 5 to deform and fill into the non-convolution body riveting hole 4, a fillet 1-3-1 is arranged on the shaft shoulder part 1-3 to prevent the rivet welding tool 1 from damaging the upper riveting plate 2, a concave hole 1-3-2 is formed in the bottom surface of the shaft shoulder part 1-3, a part of rivet 5 material is contained to form an upper rivet cap, and a salient point 1-3-3 is arranged in the concave hole 1-3-2 to prevent the rivet 5 from deviating from an axis.
As shown in fig. 1 and 3, the riveting plate 2 and the lower riveting plate 3 are both provided with non-revolving body riveting holes 4, the non-revolving body riveting holes 4 are secondary rotation symmetrical riveting holes 4-a, quartic rotation symmetrical riveting holes 4-B or sextuple rotation symmetrical riveting holes 4-C, or other types of rotation symmetrical structures, and the revolving structures are used for limiting relative rotation between the rivets 5 and the non-revolving body riveting holes 4 to play a role in rotation self-locking.
As shown in FIGS. 2 and 4, the rivet 5 comprises a rivet cylinder 5-1 and a lower rivet cap 5-2, the rivet cylinder 5-1 is connected with the lower rivet cap 5-2, a positioning groove 5-1-1 is formed in the center of the end face of the rivet cylinder 5-1, and the positioning groove 5-1-1 is matched with the salient point 1-3-3 of the shaft shoulder 1-3 to prevent the rivet 5 from deviating from the axis.
The material of the rivet welding tool 1 includes but is not limited to high-speed tool steel, hard alloy, tungsten-rhenium alloy or polycrystalline cubic boron nitride and the like, and the material hardness of the rivet welding tool 1 is not lower than that of the rivet 5. The material of the rivet 5 includes but is not limited to nickel-based superalloy and other materials, the material of the upper riveting plate 2 and the lower riveting plate 3 includes but is not limited to metal-based composite material and other materials, and the material of the upper riveting plate 2 and the material of the lower riveting plate 3 are the same as or different from that of the rivet 5. The length of the rivet 5 is larger than the depth of the non-convolution body riveting hole 4, the diameter of the rivet 5 is slightly smaller than the inner diameter of the non-convolution body riveting hole 4, and the volume of the rivet 5 protruding out of the upper riveting plate 2 is not smaller than the unfilled volume of the non-convolution body riveting hole 4.
The embodiment is a rivet welding method of a self-filling friction rivet welding device with a rotary limiting function, which comprises the following steps:
step 1: the rivet 5 is pre-arranged in the non-revolution body riveting hole 4 and penetrates through the upper riveting plate 2 and the lower riveting plate 3;
step 2: placing a rivet welding tool 1 right above a non-revolving body rivet hole 4 and a rivet 5, aligning the axis of the rivet welding tool 1 with the axis of the non-revolving body rivet hole 4, and connecting the rivet welding tool 1 with the rivet 5;
and step 3: the rivet welding tool 1 rotates and presses down at a certain speed until the shaft shoulder part 1-3 is at a certain distance from the upper surface of the upper riveting plate 2;
and 4, step 4: the rivet welding tool 1 and the rivet 5 generate rotary friction and generate deformation heat, so that the rivet 5 is thermally plasticized and automatically fills the non-revolving body rivet hole 4 under the extrusion action of the rivet welding tool 1, and a rotary self-locking structure is formed;
and 5: the rivet welding tool 1 is drawn back, and the upper riveting plate 2, the lower riveting plate 3, the non-revolving body riveting hole 4 and the deformed rivet 5 jointly form a rivet welding structure with a revolving direction limiting effect.
The rotation speed of the rivet welding tool 1 is 50-20000 rpm, the pressing speed is 0.1-1000 mm/min, and the rivet welding termination condition is that the distance between the shaft shoulder part 1-3 and the upper surface of the upper riveting plate 2 is 0.01-2 mm. If the materials of the rivet 5, the upper riveting plate 2 and the lower riveting plate 3 are sensitive to air at high temperature, gas protection measures, such as argon and helium protection, can be selected to be taken in the riveting welding process. If the softening temperature of the rivet 5 is too high and it is difficult to soften the rivet simply by the heat generated by the high-speed rotational friction of the rivet welding tool 1, the rivet may be heated by a method such as flame roasting or high-frequency electromagnetic induction heating.
The self-filling friction rivet welding device with the rotation direction limiting function and the rivet welding method provided by the invention are described in detail, a specific example is applied to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a from filling friction rivet welding device with revolve to spacing which characterized in that: the riveting tool comprises a riveting tool (1), an upper riveting plate (2), a lower riveting plate (3), a non-convolution body riveting hole (4) and a rivet (5), wherein the non-convolution body riveting hole (4) is formed in the upper riveting plate (2) and the lower riveting plate (3), the rivet (5) is arranged in the non-convolution body riveting hole (4) and penetrates through the upper riveting plate (2) and the lower riveting plate (3), and the riveting tool (1) is arranged right above the non-convolution body riveting hole (4) and the rivet (5) and is connected with the rivet (5).
2. The self-filling friction rivet welding device with the screwing direction limiting function as recited in claim 1, wherein: the rivet welding tool (1) comprises a clamping part (1-1), a transition part (1-2) and a shaft shoulder part (1-3), a positioning plane (1-1-1) is arranged on the clamping part (1-1), the transition part (1-2) is connected with the clamping part (1-1) and the shaft shoulder part (1-3), a plurality of radiating grooves (1-2-1) with concentric circular groove structures are arranged on the transition part (1-2), a round corner (1-3-1) is arranged on the shaft shoulder part (1-3), a concave hole (1-3-2) is formed in the bottom surface of the shaft shoulder part (1-3), and a convex point (1-3-3) is arranged in the concave hole (1-3-2).
3. The self-filling friction rivet welding device with the screwing direction limiting function as recited in claim 1, wherein: the non-revolution body riveting hole (4) is a secondary rotation symmetrical riveting hole (4-A), a quartic rotation symmetrical riveting hole (4-B) or a sextic rotation symmetrical riveting hole (4-C).
4. The self-filling friction rivet welding device with the screwing direction limiting function as recited in claim 1, wherein: the rivet (5) comprises a rivet cylinder (5-1) and a lower rivet cap (5-2), the rivet cylinder (5-1) is connected with the lower rivet cap (5-2), and a positioning groove (5-1-1) is formed in the center of the end face of the rivet cylinder (5-1).
5. The self-filling friction rivet welding device with rotation direction limiting function of claim 1, characterized in that: the rivet welding tool (1) is made of high-speed tool steel, hard alloy, tungsten-rhenium alloy or polycrystalline cubic boron nitride, and the material hardness of the rivet welding tool (1) is not lower than that of the rivet (5).
6. The self-filling friction rivet welding device with the screwing direction limiting function as recited in claim 1, wherein: the rivet (5) is made of nickel-based high-temperature alloy, and the upper riveting plate (2) and the lower riveting plate (3) are made of metal-based composite materials.
7. The self-filling friction rivet welding device with rotation direction limiting function of claim 1, characterized in that: the length of the rivet (5) is greater than the depth of the non-convolution body riveting hole (4), the diameter of the rivet (5) is smaller than the inner diameter of the non-convolution body riveting hole (4), and the volume of the rivet (5) protruding out of the upper riveting plate (2) is not smaller than the unfilled volume of the non-convolution body riveting hole (4).
8. A rivet welding method of a self-filling friction rivet welding device with a rotation direction limiting function according to claim 1, characterized in that: it comprises the following steps:
step 1: the rivet (5) is pre-arranged in the non-revolution body riveting hole (4) and penetrates through the upper riveting plate (2) and the lower riveting plate (3);
and 2, step: placing a rivet welding tool (1) right above a non-revolving body rivet hole (4) and a rivet (5), aligning the axis of the rivet welding tool (1) with the axis of the non-revolving body rivet hole (4), and connecting the rivet welding tool (1) with the rivet (5);
and step 3: the rivet welding tool (1) rotates and presses down at a certain speed until the shaft shoulder part (1-3) is at a certain distance from the upper surface of the upper rivet plate (2);
and 4, step 4: the rivet welding tool (1) and the rivet (5) generate rotary friction and generate deformation heat, so that the rivet (5) is thermoplasticized and automatically fills the non-revolving body rivet hole (4) under the extrusion action of the rivet welding tool (1), and a rotary self-locking structure is formed;
and 5: the rivet welding tool (1) is withdrawn, and the upper rivet connecting plate (2), the lower rivet connecting plate (3), the non-convolution body rivet hole (4) and the deformed rivet (5) jointly form a rivet welding structure with a rotation direction limiting effect.
9. The rivet welding method of the self-filling friction rivet welding device with the screwing direction limiting function according to claim 8, characterized in that: the rotation speed of the rivet welding tool (1) is 50-20000 rpm, the pressing speed is 0.1-1000 mm/min, and the rivet welding termination condition is that the distance between the shaft shoulder part (1-3) and the upper surface of the upper riveting plate (2) is 0.01-2 mm.
10. The rivet welding method of the self-filling friction rivet welding device with the screwing direction limiting function according to claim 8, characterized in that: argon or helium is used as a gas protection measure in the rivet welding process, and a flame broil or electromagnetic induction heating method can be adopted for auxiliary heating in the rivet welding process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110905475.5A CN113732233B (en) | 2021-08-06 | 2021-08-06 | Self-filling friction rivet welding device with rotation direction limiting function and rivet welding method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110905475.5A CN113732233B (en) | 2021-08-06 | 2021-08-06 | Self-filling friction rivet welding device with rotation direction limiting function and rivet welding method |
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| CN113732233B true CN113732233B (en) | 2022-06-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829903A (en) * | 2010-06-08 | 2010-09-15 | 上海交通大学 | Single-sided self-piercing friction stub rivet welding device and connection method thereof |
| CN103600016A (en) * | 2013-11-25 | 2014-02-26 | 吉林大学 | Riveting method of ultrahigh strength steel plates or aluminum alloy plates |
| JP2014226698A (en) * | 2013-05-22 | 2014-12-08 | 株式会社神戸製鋼所 | Rivet joint structure and method of manufacturing the same |
| CN106112543A (en) * | 2016-07-19 | 2016-11-16 | 上海交通大学 | Rivet and self-piercing frictional rivet welding connection system thereof for self-piercing frictional rivet welding |
| CN112823961A (en) * | 2019-11-20 | 2021-05-21 | 上海交通大学 | Riveting device and method for self-piercing friction rivet welding process |
-
2021
- 2021-08-06 CN CN202110905475.5A patent/CN113732233B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101829903A (en) * | 2010-06-08 | 2010-09-15 | 上海交通大学 | Single-sided self-piercing friction stub rivet welding device and connection method thereof |
| JP2014226698A (en) * | 2013-05-22 | 2014-12-08 | 株式会社神戸製鋼所 | Rivet joint structure and method of manufacturing the same |
| CN103600016A (en) * | 2013-11-25 | 2014-02-26 | 吉林大学 | Riveting method of ultrahigh strength steel plates or aluminum alloy plates |
| CN106112543A (en) * | 2016-07-19 | 2016-11-16 | 上海交通大学 | Rivet and self-piercing frictional rivet welding connection system thereof for self-piercing frictional rivet welding |
| CN112823961A (en) * | 2019-11-20 | 2021-05-21 | 上海交通大学 | Riveting device and method for self-piercing friction rivet welding process |
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| CN113732233A (en) | 2021-12-03 |
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