CN114226625B - Double-layer sheet self-locking combination method - Google Patents
Double-layer sheet self-locking combination method Download PDFInfo
- Publication number
- CN114226625B CN114226625B CN202111550000.5A CN202111550000A CN114226625B CN 114226625 B CN114226625 B CN 114226625B CN 202111550000 A CN202111550000 A CN 202111550000A CN 114226625 B CN114226625 B CN 114226625B
- Authority
- CN
- China
- Prior art keywords
- rivet
- head
- top iron
- preset
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 46
- 229910052742 iron Inorganic materials 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001788 irregular Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000003801 milling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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
-
- 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
- B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
- B21J15/40—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting for forming rivet heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B35/00—Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a double-layer sheet self-locking combination method, and belongs to the technical field of aviation manufacturing and maintenance. The method mainly comprises three steps: drilling, pressing rivets and forming the rivets. The invention solves the problems of irregular rivet holes and reduced bonding strength of two layers of thin plates during riveting by adding the preset top iron.
Description
Technical Field
The invention belongs to the technical field of aviation manufacturing and maintenance, and relates to a double-layer sheet self-locking combination method.
Background
When the aircraft repairs structural accessories, the thinner metal plates need to be riveted and connected. Because the existing process methods are to drill holes and mill grooves on the thin plates, then place rivets, press the rivets by one end, press the other end, flatten the rivets to form larger pier heads, and press the two layers of thin plates together. In the process of drilling by the drill bit, the drill bit is deflected in the process of rotary cutting due to the small thickness of the thin plate, so that irregular shapes such as ellipses are formed, and the irregular shapes of the rivet pier head in the subsequent rivet extrusion process influence the connection strength. In addition, in the groove milling process, excessive milling is easy to occur, and the tensile strength of the plate is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a double-layer sheet self-locking combination method, which solves the problem of irregular rivet holes, and can form a self-locking structure on the riveted part at the same time, thereby improving the strength of sheet connection.
The technical scheme of the invention is as follows:
a double-layer sheet self-locking combination method comprises the following steps:
in a first step, the sheets to be joined are drilled with a drill bit to form the appropriate holes. The diameter of the drill bit used is less than 5% of the size of the rivet to be riveted.
Secondly, placing the rivet in the hole drilled in the first step, and extruding the head of the rivet by adopting a rivet pressing head until the head of the rivet is level with the surface of the upper layer thin plate; meanwhile, a preset top iron is placed at the lower part of the rivet, and the part of the lower part of the rivet penetrating out of the thin plate is embedded into a groove of the preset top iron. The top of presetting the top iron is equipped with the slope the same with rivet head cone angle, through presetting the top iron with the edge of two-layer lamellar hole be formed with the layering and have elastic turn-ups structure, can play the auto-lock effect.
Thirdly, withdrawing the preset top iron, and placing the solid top iron at the lower part of the extending rivet; the continuous impact solid top iron impacts the lower part of the rivet out of the pier head, and the flanging structure of the two layers of thin plates is wrapped in the rivet pier head, so that the two layers of thin plates are tightly combined together.
The invention has the beneficial effects that: according to the double-layer sheet self-locking combination method, the situation of irregular rivet holes is solved by adding the preset top iron, and meanwhile, a self-locking structure can be formed on the riveted part, so that the strength of sheet connection is improved.
Drawings
Fig. 1 is a schematic diagram a of a borehole.
Fig. 2 is a schematic diagram B of a borehole.
Fig. 3 is a schematic view of the head of a squeeze rivet.
Fig. 4 is a schematic view of a press flange.
Fig. 5 is a schematic diagram of solid top iron placement.
Fig. 6 is a schematic view of rivet formation.
Detailed Description
The following detailed description of the invention is further illustrated in conjunction with the examples and the accompanying drawings, but is not intended to limit the invention.
As shown in fig. 1 to 6, a double-layer thin plate self-locking combination method comprises the following steps:
in a first step, the sheets to be joined are drilled with a drill bit. The diameter of the drill bit used is less than 5% of the size of the rivet to be riveted.
Secondly, placing the rivet in the hole drilled in the first step, and extruding the rivet by adopting a rivet pressing head until the rivet head is flush with the surface of the upper layer thin plate; meanwhile, the lower part of the rivet adopts a preset top iron with the same cone angle as the head of the rivet, and the part of the rivet, which penetrates out of the thin plate, is embedded into a groove of the preset top iron. The edges of the two layers of sheet holes are formed with layers and elastic flanging structures through the preset top iron, so that the self-locking effect is achieved.
Thirdly, withdrawing the preset top iron, and placing the solid top iron at the lower part of the extending rivet; the continuous impact solid top iron impacts the lower part of the rivet out of the pier head, and the flanging of the double-layer thin plate is wrapped in the rivet pier head, so that the two layers of thin plates are tightly combined together.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A double-layer sheet self-locking bonding method, which is characterized by comprising the following steps:
firstly, drilling holes in thin plates to be connected by adopting a drill bit;
secondly, placing the rivet in the hole drilled in the first step, and extruding the head of the rivet by adopting a rivet pressing head until the head of the rivet is flush with the surface of the upper sheet; meanwhile, a preset top iron is placed at the lower part of the rivet, and the part of the lower part of the rivet penetrating out of the thin plate is embedded into a groove of the preset top iron; the top of the preset jacking iron is provided with a slope which is the same as the taper angle of the head of the rivet, and the edges of the two layers of sheet holes are formed into a layered and elastic flanging structure through the preset jacking iron, so that the self-locking effect is realized;
thirdly, withdrawing the preset top iron, and placing the solid top iron at the lower part of the extending rivet; the continuous impact solid top iron impacts the lower part of the rivet out of the pier head, and the flanging structure of the two layers of thin plates is wrapped inside the rivet pier head, so that the two layers of thin plates are tightly combined together.
2. The method of claim 1, wherein the diameter of the drill bit in the first step is less than 5% of the size of the rivet to be riveted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111550000.5A CN114226625B (en) | 2021-12-17 | 2021-12-17 | Double-layer sheet self-locking combination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111550000.5A CN114226625B (en) | 2021-12-17 | 2021-12-17 | Double-layer sheet self-locking combination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114226625A CN114226625A (en) | 2022-03-25 |
| CN114226625B true CN114226625B (en) | 2024-03-08 |
Family
ID=80758102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111550000.5A Active CN114226625B (en) | 2021-12-17 | 2021-12-17 | Double-layer sheet self-locking combination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114226625B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB186330A (en) * | 1921-09-23 | 1923-05-10 | Zeppelin Luftschiffbau | Improvements in the connection of metal plates |
| FR782335A (en) * | 1934-12-05 | 1935-06-03 | Riveting process | |
| GB550898A (en) * | 1940-08-12 | 1943-01-29 | Huck Mfg Co | Improvements in or relating to riveting |
| US4048708A (en) * | 1976-05-17 | 1977-09-20 | Briles Franklin S | Riveting method expanding a work counterbore |
| US5557835A (en) * | 1991-02-19 | 1996-09-24 | Brandts; Michiel P. | Method, Rivet-Punch, for joining several metal sheets by using non-heat-treated rivets made from an aluminium alloy |
| WO2006045787A1 (en) * | 2004-10-28 | 2006-05-04 | Sfs Intec Holding Ag | Riveted joint |
| CN104399859A (en) * | 2014-11-25 | 2015-03-11 | 眉山南车紧固件科技有限公司 | Method and system for self-locking and fixedly connecting thin plate |
| CN104889270A (en) * | 2015-06-27 | 2015-09-09 | 芜湖莫森泰克汽车科技有限公司 | Auto door glass lifter sheet riveting device |
-
2021
- 2021-12-17 CN CN202111550000.5A patent/CN114226625B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB186330A (en) * | 1921-09-23 | 1923-05-10 | Zeppelin Luftschiffbau | Improvements in the connection of metal plates |
| FR782335A (en) * | 1934-12-05 | 1935-06-03 | Riveting process | |
| GB550898A (en) * | 1940-08-12 | 1943-01-29 | Huck Mfg Co | Improvements in or relating to riveting |
| US4048708A (en) * | 1976-05-17 | 1977-09-20 | Briles Franklin S | Riveting method expanding a work counterbore |
| US5557835A (en) * | 1991-02-19 | 1996-09-24 | Brandts; Michiel P. | Method, Rivet-Punch, for joining several metal sheets by using non-heat-treated rivets made from an aluminium alloy |
| WO2006045787A1 (en) * | 2004-10-28 | 2006-05-04 | Sfs Intec Holding Ag | Riveted joint |
| CN104399859A (en) * | 2014-11-25 | 2015-03-11 | 眉山南车紧固件科技有限公司 | Method and system for self-locking and fixedly connecting thin plate |
| CN104889270A (en) * | 2015-06-27 | 2015-09-09 | 芜湖莫森泰克汽车科技有限公司 | Auto door glass lifter sheet riveting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114226625A (en) | 2022-03-25 |
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