KR20160012607A - Self piercing rivet, and method for joining using the same - Google Patents
Self piercing rivet, and method for joining using the same Download PDFInfo
- Publication number
- KR20160012607A KR20160012607A KR1020140094245A KR20140094245A KR20160012607A KR 20160012607 A KR20160012607 A KR 20160012607A KR 1020140094245 A KR1020140094245 A KR 1020140094245A KR 20140094245 A KR20140094245 A KR 20140094245A KR 20160012607 A KR20160012607 A KR 20160012607A
- Authority
- KR
- South Korea
- Prior art keywords
- self
- base material
- piercing rivet
- joining
- rivet
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000005304 joining Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 101
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000004080 punching Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- 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
- B21J15/025—Setting self-piercing rivets
-
- 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
- B21J15/04—Riveting hollow rivets mechanically
- B21J15/048—Setting self-drilling hollow rivets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
- F16B19/086—Self-piercing rivets
Abstract
A self-piercing rivet and a joining method using the same are disclosed. The self-piercing rivet according to an embodiment of the present invention comprises a head portion and a shank portion, and the head portion is formed with a filling hole penetrating up and down so as to fill the base material when riveting.
The joining method using a self-piercing rivet according to an embodiment of the present invention includes a step of feeding a self-piercing rivet to a punch unit, placing the base material on an envelope, a step of lowering the punch unit to be joined to the base material A pressing and heating step of press-fitting the self-piercing rivet into the base material with respect to the joining portion of the base material, and a step of press-fitting the self-piercing rivet into the base material And a filling step of filling the base material into the filling hole in the process.
Description
The present invention relates to a method of joining a work using a self-piercing rivet, and more particularly, to a self-piercing rivet which can pass and join two or more joining objects and a joining method using the same.
In the automobile industry, the use of aluminum alloys and plastic materials to improve fuel efficiency due to environmental problems has been aimed at reducing the weight of the vehicle body.
For this purpose, in the automobile industry, a joining method capable of replacing a conventional spot welding for assembling a vehicle body is being studied.
Recently, self-piercing rivet joining method using self piercing rivet has been applied as a joining method according to the above consideration.
The self-piercing rivet bonding method is different from the conventional riveting method in which a hole for rivet bonding is formed on a bonding object such as a steel plate and a rivet is inserted into the hole and then the head part is joined to bond the object to be bonded. The rivet is press-fitted into the object to be bonded by hydraulic pressure or pneumatic pressure to plastic-deform the rivet to join the object to be bonded.
That is, a self-piercing rivet can be used to join two or more identical or dissimilar materials.
FIG. 1 is a process diagram showing a joining process using a self-piercing rivet according to the related art, and FIG. 2 is a cross-sectional view illustrating a joining cross-section of a conventional material.
1, a conventional joining process using a self-
The conventional self-
As shown in FIG. 1, the conventional self-
And, the joining method using such a self-piercing rivet can be used for mechanically joining parts such as an aluminum body which is not particularly easy to spot weld.
However, since the self-piercing rivet according to the prior art as described above has the advantage of exhibiting a strong bonding force in the tensile direction and the compressive direction, the self-piercing rivet joins the dissimilar material only by a simple pressing force, Or more) or a thick material or three or more materials.
2, the self-piercing rivet joint according to the prior art is formed in such a manner that when the self-
The matters described in the background section are intended to enhance the understanding of the background of the invention and may include matters not previously known to those skilled in the art.
In the embodiment of the present invention, a filling hole having an inverted trapezoidal shape is formed in the head portion so that the filling material is filled in the filling hole during the self-piercing riveting process, thereby increasing the fastening force of the joint portion and minimizing the protrusion formed on the joint portion. To provide a piercing rivet and a joining method using the same.
Also, it is intended to provide a self-piercing rivet which can be applied to a highly rigid material by securing ductility by resistance heating around the joint portion of the base material immediately before the piercing process, and a joining method using the same.
In one or more embodiments of the present invention, the self-piercing rivet comprises a head portion and a shank portion, wherein the head portion is provided with a self-piercing rivet having a filling hole penetrating upwardly and downwardly to fill the base material when riveting .
In addition, the filling hole may have a tapered shape in which the diameter decreases from the upper end to the lower end of the center of the head portion.
The base material is made of an aluminum sheet or an ultra high tensile steel sheet, and may be at least two sheets or more.
The base material may be made of a different material or a homogeneous material.
In one or more embodiments of the present invention, a material supply step of supplying the self-piercing rivet to the punch unit using the self-piercing rivet and placing the base material on an envelope; A joining and heating step of resistance heating the joining portion of the base material by supplying current in a state where the punch unit is lowered and joined to the base material; A punching unit for press-fitting the self-piercing rivet into the base material with respect to the joining portion of the base material; And a filling step of filling the base material into the filling hole when the self-piercing rivet is press-fitted into the base material.
Also, the filling step may fill the base material positioned inside the shank portion of the self-piercing rivet into the filling hole.
In the embodiment of the present invention, a filling hole penetrating through the head portion in a tapered inverted trapezoidal shape is formed in the head portion. In the self-piercing riveting process, the filling material is filled in the filling hole to increase the fastening force of the joint portion, There is an effect of minimizing the protrusion.
Further, resistance can be secured around the joint portion of the base material immediately before the press-fitting process to ensure ductility, so that the present invention can be applied to a high-rigidity material.
In addition, the effects obtainable or predicted by the embodiments of the present invention will be directly or implicitly disclosed in the detailed description of the embodiments of the present invention. That is, various effects to be predicted according to the embodiment of the present invention will be disclosed in the detailed description to be described later.
1 is a process diagram showing a bonding process using a self-piercing rivet according to the prior art.
2 is a cross-sectional view showing a bonded cross-section of a work according to the prior art.
3 is a cross-sectional view of a self-piercing rivet according to an embodiment of the invention.
4 is a process diagram illustrating a bonding process using a self-piercing rivet according to an embodiment of the present invention.
5 is a cross-sectional view of a joint using a self-piercing rivet according to an embodiment of the present invention.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.
FIG. 3 is a view illustrating the construction of the self-
3 and 4, the self-piercing rivet device includes a C-shaped frame (not shown), a
Here, since the C-shaped frame is a well-known technique widely known in the art, a detailed description thereof will be omitted.
The
The
This self-piercing rivet device is a piercing device in which the self-
The self-
The
At this time, the
That is, in the embodiment of the present invention, the end face of the
When the
Hereinafter, a joining method using the self-
4 is a process diagram illustrating a bonding process using a self-piercing rivet according to an embodiment of the present invention.
Referring to FIG. 4, the joining method using the self-
First, the material supply step S11 is performed.
In the material supply step S11, the
Here, the
The
As described above, the
That is, in the embodiment of the present invention, the
This
Following the material supply step S11, the bonding and heating step S12 is performed.
In the joining and heating step S12, the
At this time, the
When the self-piercing
Following the joining and heating step (S12), the pressing-in step (S13) is performed.
The
The filling step S14 is performed at the same time as the press-fitting step S13.
That is, the filling step S14 is performed in the last step of the press-fitting step S13, and a portion of the top plate among the
5 is a cross-sectional view of a joint using a self-piercing rivet according to an embodiment of the present invention.
5 is a sectional view of a joined
That is, if the thickness of the protruding
As a result, the thickness of the protruding
In addition, the filling
When the self-piercing
That is, the undercut UC on the filling
Therefore, according to the self-piercing
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.
1: Self-Pierced Rivet
3: Base material
5:
11: Punch unit
11a: punch
11b: electrode housing
13: Envidai
13a: Molding bone
21:
23: Shank portion
25: filling hole
27:
UC: Undercut
Claims (6)
The head
A self-piercing rivet in which a filling hole is formed through the inside so as to fill the base material during riveting .
The filling hole
And a tapered shape in which the diameter decreases from an upper end to a lower end of the center of the head portion.
The base material
An aluminum sheet or an ultra high tensile strength steel sheet, and at least two or more sheets of the rivet.
The base material
Self-piercing rivets made of different materials or homogeneous materials.
Feeding the self-piercing rivet to the punch unit, and placing the base material on the envelope;
A joining and heating step of resistance heating the joining portion of the base material by supplying current in a state where the punch unit is lowered and joined to the base material;
A punching unit for press-fitting the self-piercing rivet into the base material with respect to the joining portion of the base material; And
A filling step of filling the base material into the filling hole when the self-piercing rivet is pressed into the base material;
Wherein the self-piercing rivet comprises a self-piercing rivet.
The filling step
Wherein the base material located inside the shank portion of the self-piercing rivet is filled in the filling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140094245A KR20160012607A (en) | 2014-07-24 | 2014-07-24 | Self piercing rivet, and method for joining using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020140094245A KR20160012607A (en) | 2014-07-24 | 2014-07-24 | Self piercing rivet, and method for joining using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20160012607A true KR20160012607A (en) | 2016-02-03 |
Family
ID=55355607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020140094245A KR20160012607A (en) | 2014-07-24 | 2014-07-24 | Self piercing rivet, and method for joining using the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20160012607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324780A (en) * | 2020-11-19 | 2021-02-05 | 陕西科技大学 | Combined tubular self-punching rivet and method for connecting plates based on same |
| CN113915217A (en) * | 2021-09-16 | 2022-01-11 | 北京汽车研究总院有限公司 | Rivet and vehicle with same |
-
2014
- 2014-07-24 KR KR1020140094245A patent/KR20160012607A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324780A (en) * | 2020-11-19 | 2021-02-05 | 陕西科技大学 | Combined tubular self-punching rivet and method for connecting plates based on same |
| CN113915217A (en) * | 2021-09-16 | 2022-01-11 | 北京汽车研究总院有限公司 | Rivet and vehicle with same |
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| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |