CN113102946B - Lantern type rivet nut production process - Google Patents
Lantern type rivet nut production process Download PDFInfo
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- CN113102946B CN113102946B CN202110363600.4A CN202110363600A CN113102946B CN 113102946 B CN113102946 B CN 113102946B CN 202110363600 A CN202110363600 A CN 202110363600A CN 113102946 B CN113102946 B CN 113102946B
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- nut
- rivet nut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/08—Making helical bodies or bodies having parts of helical shape internal screw-threads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/68—Making machine elements nuts from round or profiled bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/64—Making machine elements nuts
- B21K1/70—Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
Abstract
The invention discloses a lantern type rivet nut production process, which comprises a rivet nut, a sawing machine, a punching machine A, a coordinate boring machine, a punching machine B, a tapping machine and a punching machine C, wherein one end of the rivet nut is fixedly connected with a nut end part, a threaded hole is formed in the rivet nut, internal threads are formed on the inner side wall of the threaded hole, the thickness of the position of an inner annular groove of the hole is thinner, a cutting groove deforms when the rivet nut is pressed, the cutting groove can expand from the position of the inner annular groove to the periphery and is attached to the surface of an installation piece, compared with the traditional rivet nut production process, drum-shaped treatment is not needed, the outer wall of the rivet nut is attached to the inner wall of the installation hole after installation, good friction resistance can be obtained, meanwhile, the effect of increasing friction force is achieved by utilizing a corrugated groove A and a corrugated groove B, and the friction force between the rivet nut and the installation piece after installation is further improved, the stability of the position of the riveting nut is guaranteed, and the problems that the riveting nut is easy to rotate after being installed and the stability is not enough are solved.
Description
Technical Field
The invention relates to the technical field of rivet nut production, in particular to a lantern type rivet nut production process.
Background
The rivet nut is widely used for assembling electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, decoration and the like, is developed for overcoming the defects that a welding nut of a metal sheet and a thin pipe is easy to melt, a base material is easy to weld and deform, an internal thread is easy to slip, and the like, does not need tapping the internal thread, does not need welding the nut, has high riveting firmness efficiency and is convenient to use, the lantern type rivet nut refers to the rivet nut which is formed into a lantern shape after being installed, the application is very wide, and the rivet nut is generally produced in a cold stamping mode.
The traditional rivet nut production process has the following defects that 1, the traditional rivet nut is subjected to cold stamping treatment by stamping equipment during production operation, the steps of shaping, reshaping, stretching an upper large hole, grooving, stretching a lower large hole, stretching a threaded hole, punching waste, tapping and the like are mainly required, the production process is complex, drum-shaped treatment is required at the production rear end, the grooving part is opened towards the periphery, and the grooving can be smoothly unfolded during installation, but the inner diameter of the grooving part after drum-shaped is larger than the inner diameter of a rivet nut main body, a rivet nut smaller than the inner diameter of an installation hole is required during installation and use, a gap exists between the rivet nut and the inner diameter of an installation shell after installation, so that the rivet nut is easy to rotate and slip, the fixing effect is influenced, and the grooving part and the nut end part after the traditional rivet nut is produced are both in a smooth structure, the friction force between the mounting piece and the rivet nut is small, and the situation that the rivet nut is unstable in rotation and fixation inside the mounting piece is easily caused.
Disclosure of Invention
The invention aims to overcome the technical problems of the prior art and provide a lantern type rivet nut production process, which comprises the steps of firstly carrying out preliminary base body forming in the production process, using a coordinate boring machine to open a precise in-hole annular groove at the position close to a grooving in the rivet nut after the base body forming is finished, so that the thickness of the in-hole annular groove is reduced, then carrying out stamping and subsequent production, wherein the in-hole annular groove in the finished rivet nut is positioned at the middle position of the grooving and is arranged on the inner wall of a threaded hole in a horizontal state, inserting the rivet nut into an installation hole when the rivet nut is used, pressing and deforming one side of the rivet nut far away from the end part of the nut to be close to the installation part, and because the thickness of the in-hole annular groove is thinner, the grooving deformation can expand from the in-hole annular groove to the periphery when the rivet nut is pressed and is attached to the surface of the installation part, so as to finish the installation of the rivet nut, compared with the traditional rivet nut production process, the drum-shaped treatment is not needed, the inner diameter of the main body part of the rivet nut after production is consistent, when the rivet nut with the proper specification is selected according to the inner diameter of the mounting hole, the rivet nut with the outer diameter close to the inner diameter of the mounting hole is directly selected, the outer wall of the rivet nut after installation is attached to the inner wall of the mounting hole, good friction resistance can be obtained, the position of the rivet nut is kept fixed, meanwhile, the surface of the rivet nut is processed by stamping in the later production period, the formed corrugated groove A and the corrugated groove B are located at the position where the rivet nut is attached to the mounting piece, the corrugated groove A and the corrugated groove B are directly contacted with the surface of the mounting piece after the rivet nut is installed, the corrugated groove A and the corrugated groove B are utilized to play a role in increasing friction force, compared with the rivet nut with a smooth structure produced by the traditional production process, the friction force between the rivet nut and the mounting piece after installation is further improved, the stability of the position of the riveting nut is guaranteed, and the problems that the riveting nut is easy to rotate after being installed and the stability is not enough are solved.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a lantern type rivet nut production technology, includes rivet nut, saw cutter, punch press A, coordinate boring machine, punch press B, tapping machine and punch press C, rivet nut one end fixedly connected with nut tip, the inside screw hole of seting up of rivet nut, the screw hole inside wall is seted up by the internal thread, rivet nut inside is close to nut tip one side and sets up downthehole ring channel, it is four to set up grooving and grooving on the rivet nut surface, the ripple groove A has been seted up on the nut tip surface, the rivet nut lateral wall is close to nut tip one side and has been seted up ripple groove B.
Preferably, the lantern type rivet nut production process operation comprises the following steps:
s1, wire sawing: drawing the end part of the wire material roll into the input end of a sawing machine, starting the sawing machine, and straightening and equidistantly cutting the wire material by the operation of the sawing machine to obtain a standard cylindrical nut material;
s2, primary section stamping: feeding a cylindrical nut raw material into a punch A, and performing cold stamping treatment on the cylindrical wire raw material through a die with a head forming groove, so that one end of a cylinder is pressed and deformed, the thickness of the cylinder is compressed, the circular area of one end of the cylinder is increased to form the end part of the nut, and the rivet nut formed by a base body is obtained;
s3, opening the ring groove: the riveting nut formed by the base body is guided into a coordinate boring machine, the coordinate boring machine is controlled through a pre-programmed program to finish the inner part of one side, away from the end part of the nut, of the riveting nut base body, and an annular groove in the hole is formed in the threaded hole, so that the thickness of the position, close to the annular groove in the hole, in the threaded hole is thinned;
s4, middle-section stamping: sending the grooved rivet nut into a punch B, carrying out cold stamping treatment through a die with an inner convex stretching tooth annularly arranged at the upper end of the inner wall, wherein the stamping part is one side of the rivet nut close to the end part of the nut, and forming a cutting groove on the surface of the rivet nut after stamping;
s5, tapping of nuts: sending the rivet nut with the cut groove formed by stamping into a tapping machine, operating the tapping machine, and tapping the inner part of the threaded hole by using the tapping machine so as to tap the inner wall of the threaded hole to form an internal thread;
s6, end stamping: sending the riveting nut after the tapping into punch press C, using the inner wall to set up the mould of two direction tooth sockets, carrying out cold stamping through punch press C and handling, the inside tooth socket of mould is located the position that is close to the nut tip, surface one side and the riveting nut lateral wall of punching press completion back nut tip are close to nut tip one side and form ripple groove A and ripple groove B respectively, wash the back riveting nut that obtains after the punching press and electroplate according to the demand, obtain the riveting nut finished product.
Preferably, the annular grooves in the hole are staggered with the cutting grooves, and the annular grooves in the hole are arranged in the threaded hole in the horizontal direction at the middle position of the cutting grooves.
Preferably, the coordinate boring machine is used for installing an eccentric cutter for processing when processing an annular groove in a hole.
The invention has the following beneficial effects:
the production method comprises the steps of firstly carrying out preliminary matrix forming in the production process, after the matrix forming is finished, forming a precise in-hole annular groove at the position, close to a grooving, in the rivet nut by using a coordinate boring machine, so that the thickness of the in-hole annular groove is reduced, then carrying out stamping and subsequent production, arranging the in-hole annular groove in the finished rivet nut at the middle position of the grooving on the inner wall of a threaded hole in a horizontal state, inserting the rivet nut into the mounting hole when the rivet nut is used, pressing and deforming one side of the rivet nut, far away from the end part of the nut, to be close to the mounting part, and unfolding the grooving deformation from the position of the in-hole annular groove to the periphery when the rivet nut is pressed due to the fact that the thickness of the in-hole annular groove is thinner, and adhering the groove deformation to the surface of the mounting part, so as to finish the mounting of the rivet nut, compared with the traditional rivet nut production process, drum-type processing is not needed, and the inner diameters of the main body parts of the rivet nuts after the production are consistent, when the riveting nut with the proper specification is selected according to the inner diameter of the mounting hole, the riveting nut with the outer diameter close to the inner diameter of the mounting hole is directly selected, the outer wall of the mounted riveting nut is attached to the inner wall of the mounting hole, good friction resistance can be obtained, the position of the riveting nut is kept fixed, meanwhile, the surface of the rivet nut is processed by stamping in the later production stage, the formed corrugated groove A and the corrugated groove B are positioned at the position where the rivet nut is attached to the mounting piece, after the installation of the riveting nut is completed, the corrugated groove A and the corrugated groove B are in direct contact with the surface of the mounting piece, the corrugated groove A and the corrugated groove B are utilized to increase the friction force, compared with the riveting nut of a smooth structure produced by the traditional production process, the friction force between the installation back of the riveting nut and the mounting piece is further improved, the stability of the position of the riveting nut is ensured, and the problems of easiness in rotation and insufficient stability after the installation of the riveting nut are solved.
Drawings
Fig. 1 is a schematic structural view of a rivet nut of the lantern type rivet nut production process of the present invention.
Fig. 2 is a schematic view of production equipment and a flow structure of the lantern type rivet nut production process.
In the figure: 1. riveting a nut; 101. a nut end; 102. a threaded hole; 103. an internal thread; 104. an annular groove in the hole; 105. grooving; 106. a corrugated groove A; 107. a corrugated groove B; 2. sawing and cutting machine; 3. punching a machine A; 4. a coordinate boring machine; 5. punching a machine B; 6. a tapping machine; 7. and (5) punching a machine C.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The utility model provides a lantern type rivet nut production technology, includes rivet nut, saw cutter, punch press A, coordinate boring machine, punch press B, tapping machine and punch press C, rivet nut one end fixedly connected with nut tip, the inside screw hole of seting up of rivet nut, the screw hole inside wall is seted up by the internal thread, rivet nut inside is close to nut tip one side and sets up downthehole ring channel, it is four to set up grooving and grooving on the rivet nut surface, the ripple groove A has been seted up on the nut tip surface, the rivet nut lateral wall is close to nut tip one side and has been seted up ripple groove B.
Preferably, the lantern type rivet nut production process operation comprises the following steps:
s1, wire sawing: drawing the end part of the wire material roll into the input end of a sawing machine, starting the sawing machine, and straightening and equidistantly cutting the wire material by the operation of the sawing machine to obtain a standard cylindrical nut material;
s2, primary section stamping: feeding a cylindrical nut raw material into a punch A, and performing cold stamping treatment on the cylindrical wire raw material through a die with a head forming groove, so that one end of a cylinder is pressed and deformed, the thickness of the cylinder is compressed, the circular area of one end of the cylinder is increased to form the end part of the nut, and the rivet nut formed by a base body is obtained;
s3, opening the ring groove: guiding the rivet nut formed by the matrix into the coordinate boring machine, controlling the coordinate boring machine through a pre-programmed program to finish the inner part of one side, far away from the end part of the nut, of the rivet nut matrix, and forming an in-hole annular groove in the threaded hole to thin the thickness of the position, close to the in-hole annular groove, in the threaded hole;
s4, middle-section stamping: sending the grooved rivet nut into a punch B, carrying out cold stamping treatment through a die with an inner convex stretching tooth annularly arranged at the upper end of the inner wall, wherein the stamping part is one side of the rivet nut close to the end part of the nut, and forming a cutting groove on the surface of the rivet nut after stamping;
s5, tapping of nuts: sending the rivet nut with the cut groove formed by stamping into a tapping machine, operating the tapping machine, and tapping the inner part of the threaded hole by using the tapping machine so as to tap the inner wall of the threaded hole to form an internal thread;
s6, final-stage stamping: sending the riveting nut after the tapping into punch press C, using the inner wall to set up the mould of two direction tooth sockets, carrying out cold stamping through punch press C and handling, the inside tooth socket of mould is located the position that is close to the nut tip, surface one side and the riveting nut lateral wall of punching press completion back nut tip are close to nut tip one side and form ripple groove A and ripple groove B respectively, wash the back riveting nut that obtains after the punching press and electroplate according to the demand, obtain the riveting nut finished product.
Preferably, the annular grooves in the hole are staggered with the cutting grooves, and the annular grooves in the hole are arranged in the threaded hole in the horizontal direction at the middle position of the cutting grooves.
Preferably, when the coordinate boring machine is used for processing the annular groove in the hole, an eccentric cutter is installed for processing.
In summary, the following steps: the invention provides a lantern type rivet nut production process, which comprises the steps of firstly carrying out preliminary base body forming in the production process, using a coordinate boring machine to form a precise in-hole annular groove at the position, close to a grooving position, in a rivet nut after the base body forming is finished, so that the thickness of the in-hole annular groove is reduced, then carrying out stamping and subsequent production, arranging the in-hole annular groove in a finished rivet nut at the middle position of the grooving on the inner wall of a threaded hole in a horizontal state, inserting the rivet nut into the mounting hole when the rivet nut is used, pressing and deforming one side of the rivet nut, which is far away from the end part of the nut, to the position of an installation part, wherein the thickness of the in-hole annular groove is thinner, when the rivet nut is pressed, the grooving deformation can be unfolded from the position of the in-hole annular groove to the periphery, and is attached to the surface of the installation part, so as to finish the installation of the rivet nut, compared with the traditional rivet nut production process, the inner diameter of the main body part of the rivet nut after production is consistent, when the rivet nut with a proper specification is selected according to the inner diameter of the mounting hole, the rivet nut with the outer diameter close to the inner diameter of the mounting hole is directly selected, the outer wall of the rivet nut after installation is attached to the inner wall of the mounting hole, good friction resistance can be obtained, the position of the rivet nut is kept fixed, meanwhile, the surface of the rivet nut is processed by stamping in the later production period, the formed corrugated groove A and the corrugated groove B are positioned at the position where the rivet nut is attached to the mounting piece, the corrugated groove A and the corrugated groove B are directly contacted with the surface of the mounting piece after the rivet nut is installed, the corrugated groove A and the corrugated groove B are utilized to increase the friction force, compared with the rivet nut with a smooth structure produced by the traditional production process, the friction force between the rivet nut and the mounting piece after installation is further improved, and the stability of the position of the rivet nut is ensured, the problems that the rivet nut is easy to rotate after being installed and is not enough in stability are solved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (3)
1. The lantern type rivet nut production process is characterized by comprising the following steps of: the lantern type rivet nut production process comprises the following steps:
s1, wire sawing: drawing the end part of the wire material roll into the input end of a sawing machine (2), starting the sawing machine (2), and straightening and equidistantly cutting the wire material by the operation of the sawing machine (2) to obtain the nut material of a standard cylinder;
s2, primary section stamping: sending a cylindrical nut raw material into a punch A (3), and performing cold stamping treatment on the cylindrical wire raw material through a die with a head forming groove to enable one end of a cylinder to be deformed under pressure, the thickness of the cylinder to be compressed, and the circular area of one end of the cylinder to be increased to form a nut end part (101) so as to obtain a rivet nut (1) formed by a base body;
s3, opening the ring groove: the riveting nut (1) formed by the base body is guided into a coordinate boring machine (4), the coordinate boring machine (4) is controlled through a pre-programmed program to finish the interior of one side, away from the nut end (101), of the base body of the riveting nut (1), an in-hole annular groove (104) is formed in the threaded hole (102), and the thickness of the position, close to the in-hole annular groove (104), in the threaded hole (102) is thinned;
s4, middle-section stamping: sending the grooved rivet nut (1) into a punch B (5), carrying out cold stamping treatment through a die with an inner convex stretching tooth annularly arranged at the upper end of the inner wall, wherein the stamping part is one side of the rivet nut (1) close to the nut end part (101), and forming a cutting groove (105) on the surface of the rivet nut (1) after stamping;
s5, tapping of nuts: the rivet nut (1) which is punched to form the cutting groove (105) is sent into a tapping machine (6), the tapping machine (6) is operated, the tapping machine (6) is used for tapping the interior of the threaded hole (102), and the inner wall of the threaded hole (102) is tapped to form an internal thread (103);
s6, final-stage stamping: sending into punch press C (7) rivet nut (1) after accomplishing the tapping, use the inner wall to set up the mould of two direction alveolus, carry out cold stamping through punch press C (7) and handle, the inside alveolus of mould is located the position that is close to nut tip (101), the punching press is accomplished surface one side of back nut tip (101) and rivet nut (1) lateral wall and is close to nut tip (101) one side and form ripple groove A (106) and ripple groove B (107) respectively, electroplate as required after washing rivet nut (1) that obtains after the punching press, obtain rivet nut (1) finished product.
2. The lantern type rivet nut production process according to claim 1, characterized in that: the positions of the annular grooves (104) in the hole and the positions of the cutting grooves (105) are staggered, and the annular grooves (104) in the hole are positioned in the middle of the cutting grooves (105) and are arranged in the threaded hole (102) in the horizontal direction.
3. The lantern rivet nut production process of claim 1, characterized in that: and when the annular groove (104) in the hole is machined by the coordinate boring machine (4), an eccentric cutter is installed for machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110363600.4A CN113102946B (en) | 2021-04-02 | 2021-04-02 | Lantern type rivet nut production process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110363600.4A CN113102946B (en) | 2021-04-02 | 2021-04-02 | Lantern type rivet nut production process |
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| CN113102946A CN113102946A (en) | 2021-07-13 |
| CN113102946B true CN113102946B (en) | 2022-09-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115070357A (en) * | 2022-07-01 | 2022-09-20 | 傅洪杰 | Integrated processing technology and equipment for expansion rivet nut |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377360A (en) * | 1980-05-05 | 1983-03-22 | Wire Products Company, Inc. | Channel nut and method of making same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0077858A1 (en) * | 1981-10-27 | 1983-05-04 | Societe Industrielle De Mecanique Et D'automation Du Faucigny (S I M A F) | Cylindrical blind nut |
| GB2427008B (en) * | 2005-06-10 | 2008-05-14 | Newfrey Llc | Improved blind rivet |
| EP2136089B1 (en) * | 2008-06-16 | 2010-10-20 | Gally S.p.A. | Self-locking nut |
| JP2013160321A (en) * | 2012-02-07 | 2013-08-19 | Nippon Pop Rivets & Fasteners Ltd | Blind nut and method for mounting the same |
| FR3017429B1 (en) * | 2014-02-10 | 2016-08-26 | Bollhoff Otalu Sa | BLIND CRIMP NUT ON A SUPPORT |
| CN108119498A (en) * | 2016-11-29 | 2018-06-05 | 殷雯 | A kind of convex grain formula anti-slip riveting nut of built-in nut |
| CN109210065A (en) * | 2018-10-30 | 2019-01-15 | 贵州航瑞科技有限公司 | Titanium alloy earless plate nut and its processing method |
| CN110180988A (en) * | 2019-06-13 | 2019-08-30 | 广州市科镁隆五金有限公司 | A kind of lantern type rivet nut production technology |
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2021
- 2021-04-02 CN CN202110363600.4A patent/CN113102946B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4377360A (en) * | 1980-05-05 | 1983-03-22 | Wire Products Company, Inc. | Channel nut and method of making same |
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