Detachable quick rivet and manufacturing method thereof

Abstract

The invention discloses a detachable quick rivet and a manufacturing method thereof, the detachable quick rivet comprises a rivet cap, the rivet cap comprises a hollow square part, and a hollow round part is arranged on the right side of the hollow square part. Through the arrangement of the rivet cap, the riveting piece and the countersunk head inner hexagonal screw, in the use process of the rivet, a person can control the countersunk head inner hexagonal screw to rotate so as to drive the riveting piece to move, so that the limiting abutting plate on the connecting plate can stretch out of the containing through hole in the rivet cap and is tightly attached to the side face of a mounting component, and the riveting effect is improved. And in the subsequent dismounting process, a worker can control the countersunk head socket head cap screw to rotate in the other direction, and after the interior of a left side screw cap of the countersunk head socket head cap screw is separated, the worker can forcibly push the countersunk head socket head cap screw to move, so that the countersunk head socket head cap screw can be conveniently dismounted. And the limiting abutting plate on the riveting piece retreats back into the containing through hole, so that a worker can conveniently take down the nail cap from the mounting part subsequently.

Description

Technical Field

[0001] This invention relates to the field of rivet technology, specifically to a detachable quick rivet and its manufacturing method. Background Technology

[0002] Rivets are fasteners used to connect two or more objects. They are widely used in various fields, such as construction, machinery manufacturing, and aerospace. The choice of rivets usually depends on factors such as the material and thickness of the objects being connected, the required connection strength, and the environment in which they are used. Different types of rivets have different characteristics and applications, such as solid rivets, hollow rivets, and semi-hollow rivets. When using rivets, it is necessary to select the appropriate rivet type and installation method according to the specific situation to ensure the reliability and safety of the connection.

[0003] However, once traditional rivets are installed, they are usually difficult to disassemble. If the connected parts need to be repaired, replaced or reassembled later, disassembly can often only be achieved by destroying the rivets or the connected parts. This not only wastes materials, but may also damage the connected parts, increasing maintenance costs and difficulty. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable quick rivet and its manufacturing method, which has the advantage of facilitating disassembly operations during later maintenance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a detachable quick-release rivet, comprising: The nail head includes a hollow square portion, a hollow circular portion is provided on the right side of the hollow square portion, and a receiving through hole is provided at the right end of the hollow circular portion; A rivet placed inside a nail head, the rivet including a connecting plate, the surface of the connecting plate being provided with a limit stop, and the middle end of the connecting plate being provided with an internal thread; A countersunk hexagonal socket head cap screw with a threaded connection to the surface of an internal thread, wherein the surface of the countersunk hexagonal socket head cap screw contacts the inner cavity of the screw head.

[0006] As a preferred embodiment, the number of the limiting plate and the receiving through hole are both four, and the surface of the limiting plate is movably connected to the surface of the receiving through hole.

[0007] As a preferred embodiment, both sides of the accommodating through hole are inclined surfaces.

[0008] As a preferred embodiment, the nail head, rivet, and countersunk hexagonal screw are all made of 304 stainless steel.

[0009] As a preferred embodiment, a protrusion is provided at the right end of the hollow circular portion, and the protrusion is ring-shaped.

[0010] A method for manufacturing a detachable quick-release rivet, the method comprising the following steps: S. Raw material preparation: Based on the size requirements of each rivet component, prepare raw materials such as 304 stainless steel bars and plates of different specifications. For example, for rivet heads and rivets, select stainless steel plates of appropriate thickness, while for countersunk hexagon socket screws, select stainless steel bars of appropriate diameter. S1. Manufacturing of nail heads and rivets a. Die design and manufacturing: Design and manufacture special stamping dies according to the shape and size of the nail head and rivet, strictly control the processing accuracy of the stamping die, and ensure that the dimensional tolerance of the die is within the allowable range; b. Stamping operation: Place the prepared stainless steel sheet into the nail head mold and rivet mold of the stamping machine respectively, and apply appropriate pressure through the stamping machine to gradually shape the sheet into the approximate shape of the nail head and rivet. c. Cutting and trimming: After stamping, the nail head blank and rivet blank may have some irregular edges and excess material. Use a laser cutting machine to cut and trim the nail head blank and rivet blank, remove the excess part, and cut out the required through hole on the nail head blank to make its size meet the design requirements. e. Turning: The trimmed rivet is clamped on a lathe and turned to create an internal thread in the middle of the connecting plate. S2. Manufacturing of countersunk hex socket screws a. Cold heading operation: The prepared stainless steel bar is placed into the cold heading machine, and the stainless steel bar is cold-headed into shape and size according to the countersunk hexagon socket screw. During the cold heading process, the wire is gradually processed into the head and shank shape of the countersunk hexagon socket screw through the action of the mold. b. Thread rolling: Use a thread rolling machine to perform thread rolling on the cold-forged countersunk hexagon socket screw blank to machine external threads on the shank of the countersunk hexagon socket screw; S3. Passivation treatment: The processed nail heads, rivets and countersunk hexagonal screws are immersed in a passivation solution, and a dense passivation film is formed on the surface through a chemical reaction, which enhances the corrosion resistance of the nail heads, rivets and countersunk hexagonal screws. S4. Assembly a. Parts cleaning: The manufactured nail heads, rivets and countersunk hex socket screws are cleaned using ultrasonic cleaning to remove oil, iron filings, processing debris and other impurities left over from the processing, ensuring that the surface of each part is clean and free of impurities. After cleaning, the parts are dried to prevent rust. b. Pre-assembly inspection: Before formal assembly, pre-assembly inspection is carried out on the nail heads, rivets and countersunk hex socket screws. Check the fit between the limiting plate of the rivet and the receiving through hole of the nail head to ensure that the limiting plate can be smoothly inserted into the receiving through hole and that the fit clearance meets the design requirements. At the same time, check the thread fit between the countersunk hex socket screw and the internal thread on the rivet to ensure that the two can be screwed in smoothly without any jamming. c. Assembly Operation: First, use a wrench to rotate the external thread of the countersunk hex socket screw into the internal thread of the rivet. Then, place the rivet inside the opening of the rivet head and push the countersunk hex socket screw to move the rivet. As the rivet moves along the inside of the rivet head, the limiting plates around the rivet undergo elastic deformation until they are positioned on one side of the through hole on the rivet head. Then, the limiting plates can be inserted into the through hole under the elastic recovery, thus completing the rivet manufacturing operation.

[0011] As a preferred embodiment, in the stamping operation of step S2b, the stamping forming of the nail head adopts a multi-stage progressive stamping process, including blanking, pre-stretching, fine stretching and shaping processes performed sequentially. In the fine stretching process, the die gap is controlled at 1.05-1.1 times the thickness of the sheet metal, the pressure of the shaping process is 1.2-1.5 times the pre-stretching pressure, and the stamping speed is 4-5 mm / s.

[0012] As a preferred embodiment, in the turning process of step S2e, the turning of the internal thread is carried out using a carbide thread turning tool, with a spindle speed of 800-1200 r / min and a feed rate of 0.1-0.15 mm / r.

[0013] As a preferred embodiment, in the cold heading operation of step S3a, the cold heading forming is divided into two stages: the first stage forms the internal hexagon countersunk hole of the countersunk internal hexagon screw head through closed die forging, and the second stage forms the shank of the countersunk internal hexagon screw through open heading forging, with a cold heading pressure of 80-150MPa.

[0014] As a preferred embodiment, in the passivation treatment of step S4, a nitric acid-dichromate composite passivation solution is used, the passivation solution temperature is 35-45℃, the immersion time is 20-30 minutes, and the passivation film thickness is 0.5-2 micrometers.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the design of the rivet head, rivet, and countersunk hexagonal screw, allows the operator to rotate the countersunk hexagonal screw during use, thereby moving the rivet and causing the limiting plate on the connecting plate to extend from the receiving through hole on the rivet head and fit tightly against the side of the mounting component, achieving the effect of mounting the component. During subsequent disassembly, the operator can rotate the countersunk hexagonal screw in the other direction. After the left side of the rivet head disengages, the operator can push the countersunk hexagonal screw to move it, causing the limiting plate on the rivet to retract into the receiving through hole. This facilitates the removal of the rivet head from the mounting component, enabling quick disassembly of the rivet during subsequent maintenance. The overall operation is convenient and quick, greatly facilitating the user's convenience. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a diagram showing the state of the rivet of the present invention during use; Figure 5 This is a cross-sectional structural diagram of the rivet of the present invention in use.

[0017] In the diagram: 1. Nail head; 101. Hollow square part; 102. Hollow circular part; 103. Protrusion; 104. Receiving through hole; 2. Countersunk hexagon socket screw; 3. Rivet; 301. Limiting plate; 302. Connecting plate; 303. Internal thread. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0020] Example 1, please refer to Figure 1-Figure 5 As shown, the present invention provides a detachable quick rivet, comprising: Nail cap 1, nail cap 1 includes a hollow square part 101, a hollow circular part 102 is provided on the right side of the hollow square part 101, and a receiving through hole 104 is provided at the right end of the hollow circular part 102. The rivet 3 is placed inside the nail head 1. The rivet 3 includes a connecting plate 302. The surface of the connecting plate 302 is provided with a limiting abutment 301. The middle end of the connecting plate 302 is provided with an internal thread 303. The countersunk hexagonal screw 2 is threaded onto the surface of the internal thread 303, and the surface of the countersunk hexagonal screw 2 contacts the inner cavity of the screw head 1.

[0021] In this technical solution, during use, after inserting the rivet head 1 into the rivet hole on the component to be installed, the countersunk hex screw 2 is rotated using a hex screwdriver. The countersunk hex screw 2 rotates and passes through the internal thread 303, causing the rivet 3 to move to the right. During the movement of the rivet 3, the limiting plates 301 around the connecting plate 302 extend from the receiving through hole 104 outwards from the rivet head 1 until the limiting plates 301 are tightly against the side of the component, thus completing the installation of the component. Furthermore, when it is necessary to disassemble the rivet, it is done by using a hex screwdriver... When the countersunk head socket screw 2 is rotated in the other direction, it moves to the right along the surface of the internal thread 303, causing the left side of the countersunk head socket screw 2 to detach from the surface of the rivet head 1. Then, by pushing the countersunk head socket screw 2 to the left, the rivet 3 can be moved to the left. During the movement of the rivet 3, the limiting plates 301 around the connecting plate 302 can be retracted into the receiving through hole 104. Then, the rivet can be removed from the rivet hole on the mounting component, which greatly facilitates the disassembly operation.

[0022] Example 2: Based on Example 1, the present invention is as follows... Figure 1-Figure 5 As shown, there are four limiting plates 301 and four receiving through holes 104. The surface of the limiting plates 301 is movably connected to the surface of the receiving through holes 104. Both sides of the receiving through holes 104 are beveled. The nail head 1, the rivet 3 and the countersunk hexagonal screw 2 are all made of 304 stainless steel. A protrusion 103 is provided at the right end of the hollow circular part 102. The protrusion 103 is annular in shape.

[0023] Example 3: A method for manufacturing a detachable quick-release rivet, the method comprising the following steps: S1. Raw material preparation: Based on the size requirements of each rivet component, prepare raw materials such as 304 stainless steel bars and plates of different specifications. For example, for the rivet head 1 and the rivet 3, select stainless steel plates of appropriate thickness, while for the countersunk hexagon socket screw 2, select stainless steel bars of appropriate diameter. S2. Manufacturing of nail head 1 and rivet 3 a. Mold design and manufacturing: Based on the shape and size of the nail head 1 and the rivet 3, design and manufacture a special stamping mold, strictly control the processing accuracy of the stamping mold, and ensure that the dimensional tolerance of the mold is within the allowable range; b. Stamping operation: The prepared stainless steel sheets are placed into the nail head 1 mold and the rivet 3 mold of the stamping machine respectively. The appropriate pressure is applied by the stamping machine to gradually shape the sheet into the approximate shape of nail head 1 and rivet 3. The stamping of nail head 1 adopts a multi-stage progressive stamping process, including blanking, pre-stretching, fine stretching and shaping processes in sequence. Among them, the die gap of the fine stretching process is controlled at 1.05 times the thickness of the sheet, the pressure of the shaping process is 1.2 times the pre-stretching pressure, and the stamping speed is 4mm / s. c. Cutting and trimming: After stamping, the blanks of nail head 1 and rivet 3 may have some irregular edges and excess material. Use a laser cutting machine to cut and trim the blanks of nail head 1 and rivet 3. While removing the excess, cut the required through hole 104 on the blank of nail head 1 so that its size meets the design requirements. e. Turning: The trimmed rivet 3 is clamped on a lathe and turned to produce an internal thread 303 in the middle of the connecting plate 302. The turning of the internal thread 303 is performed using a carbide thread cutting tool with a spindle speed of 800 r / min and a feed rate of 0.1 mm / r. S3. Manufacturing of countersunk hex socket screws 2 a. Cold heading operation: The prepared stainless steel bar is placed into the cold heading machine, and the stainless steel bar is cold-headed according to the shape and size of the countersunk hexagon socket screw 2. During the cold heading process, the wire is gradually processed into the head and shank shape of the countersunk hexagon socket screw 2 through the action of the mold. The cold heading is divided into two stages: the first stage is to form the internal hexagon countersunk hole of the head of the countersunk hexagon socket screw 2 through closed die forging, and the second stage is to form the shank of the countersunk hexagon socket screw 2 through open forging. The cold heading pressure is 80MPa. b. Thread rolling process: Use a thread rolling machine to perform thread rolling process on the cold-forged countersunk hexagon socket screw 2 blank to process external threads on the shank of the countersunk hexagon socket screw 2; S4. Passivation treatment: The processed nail head 1, rivet 3 and countersunk hexagon socket screw 2 are immersed in passivation solution. A dense passivation film is formed on the surface through chemical reaction, which enhances the corrosion resistance of nail head 1, rivet 3 and countersunk hexagon socket screw 2. Nitric acid-dichromate composite passivation solution is used. The passivation solution temperature is 35℃, the immersion time is 20 minutes, and the passivation film thickness is 0.5 micrometers. S5. Assembly a. Parts cleaning: The manufactured nail heads 1, rivets 3 and countersunk hex screws 2 are cleaned by ultrasonic cleaning to remove oil, iron filings, processing debris and other impurities left over from the processing, ensuring that the surface of each part is clean and free of impurities. After cleaning, the parts are dried to prevent rust. b. Pre-assembly inspection: Before formal assembly, pre-assembly inspection is carried out on the nail head 1, rivet 3 and countersunk hexagon socket screw 2. Check the fit between the limiting plate 301 of the rivet 3 and the receiving through hole 104 of the nail head 1 to ensure that the limiting plate 301 can be smoothly inserted into the receiving through hole 104 and the fit clearance meets the design requirements. At the same time, check the thread fit between the countersunk hexagon socket screw 2 and the internal thread 303 on the rivet 3 to ensure that the two can be smoothly screwed on without jamming. c. Assembly Operation: First, use a wrench to rotate the external thread of the countersunk hexagon socket screw 2 into the internal thread 303 of the rivet 3. Then, place the rivet 3 into the opening of the rivet head 1. By pushing the countersunk hexagon socket screw 2, the rivet 3 can be moved. As the rivet 3 moves along the inside of the rivet head 1, the limiting plate 301 around the rivet 3 can undergo elastic deformation until the limiting plate 301 is positioned on one side of the through hole 104 on the rivet head 1 under the action of movement. Then, under the action of elastic recovery, the limiting plate 301 can be inserted into the through hole 104, thus completing the rivet manufacturing operation.

[0024] Example 4: A method for manufacturing a detachable quick-release rivet, the method comprising the following steps: S1. Raw material preparation: Based on the size requirements of each rivet component, prepare raw materials such as 304 stainless steel bars and plates of different specifications. For example, for the rivet head 1 and the rivet 3, select stainless steel plates of appropriate thickness, while for the countersunk hexagon socket screw 2, select stainless steel bars of appropriate diameter. S2. Manufacturing of nail head 1 and rivet 3 a. Mold design and manufacturing: Based on the shape and size of the nail head 1 and the rivet 3, design and manufacture a special stamping mold, strictly control the processing accuracy of the stamping mold, and ensure that the dimensional tolerance of the mold is within the allowable range; b. Stamping operation: The prepared stainless steel sheets are placed into the nail head 1 mold and the rivet 3 mold of the stamping machine respectively. The appropriate pressure is applied by the stamping machine to gradually form the sheet into the approximate shape of nail head 1 and rivet 3. The stamping forming of nail head 1 adopts a multi-stage progressive stamping process, including blanking, pre-stretching, fine stretching and shaping processes in sequence. Among them, the die gap of the fine stretching process is controlled at 1.1 times the thickness of the sheet, the pressure of the shaping process is 1.5 times the pre-stretching pressure, and the stamping speed is 5mm / s. c. Cutting and trimming: After stamping, the blanks of nail head 1 and rivet 3 may have some irregular edges and excess material. Use a laser cutting machine to cut and trim the blanks of nail head 1 and rivet 3. While removing the excess, cut the required through hole 104 on the blank of nail head 1 so that its size meets the design requirements. e. Turning: The trimmed rivet 3 is clamped on a lathe and turned to produce an internal thread 303 in the middle of the connecting plate 302. The turning of the internal thread 303 is performed using a carbide thread cutting tool with a spindle speed of 1200 r / min and a feed rate of 0.15 mm / r. S3. Manufacturing of countersunk hex socket screws 2 a. Cold heading operation: The prepared stainless steel bar is placed into the cold heading machine, and the stainless steel bar is cold-headed according to the shape and size of the countersunk hexagon socket screw 2. During the cold heading process, the wire is gradually processed into the head and shank shape of the countersunk hexagon socket screw 2 through the action of the mold. The cold heading is divided into two stages: the first stage is to form the internal hexagon countersunk hole of the head of the countersunk hexagon socket screw 2 through closed die forging, and the second stage is to form the shank of the countersunk hexagon socket screw 2 through open forging. The cold heading pressure is 150MPa. b. Thread rolling process: Use a thread rolling machine to perform thread rolling process on the cold-forged countersunk hexagon socket screw 2 blank to process external threads on the shank of the countersunk hexagon socket screw 2; S4. Passivation treatment: The processed nail head 1, rivet 3 and countersunk hexagon socket screw 2 are immersed in passivation solution. A dense passivation film is formed on the surface through chemical reaction, which enhances the corrosion resistance of nail head 1, rivet 3 and countersunk hexagon socket screw 2. Nitric acid-dichromate composite passivation solution is used. The passivation solution temperature is 45℃, the immersion time is 30 minutes, and the passivation film thickness is 2 micrometers. S5. Assembly a. Parts cleaning: The manufactured nail heads 1, rivets 3 and countersunk hex screws 2 are cleaned by ultrasonic cleaning to remove oil, iron filings, processing debris and other impurities left over from the processing, ensuring that the surface of each part is clean and free of impurities. After cleaning, the parts are dried to prevent rust. b. Pre-assembly inspection: Before formal assembly, pre-assembly inspection is carried out on the nail head 1, rivet 3 and countersunk hexagon socket screw 2. Check the fit between the limiting plate 301 of the rivet 3 and the receiving through hole 104 of the nail head 1 to ensure that the limiting plate 301 can be smoothly inserted into the receiving through hole 104 and the fit clearance meets the design requirements. At the same time, check the thread fit between the countersunk hexagon socket screw 2 and the internal thread 303 on the rivet 3 to ensure that the two can be smoothly screwed on without jamming. c. Assembly Operation: First, use a wrench to rotate the external thread of the countersunk hexagon socket screw 2 into the internal thread 303 of the rivet 3. Then, place the rivet 3 into the opening of the rivet head 1. By pushing the countersunk hexagon socket screw 2, the rivet 3 can be moved. As the rivet 3 moves along the inside of the rivet head 1, the limiting plate 301 around the rivet 3 can undergo elastic deformation until the limiting plate 301 is positioned on one side of the through hole 104 on the rivet head 1 under the action of movement. Then, under the action of elastic recovery, the limiting plate 301 can be inserted into the through hole 104, thus completing the rivet manufacturing operation.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A detachable quick-release rivet, characterized in that, include: Nail cap (1), the nail cap (1) includes a hollow square part (101), a hollow circular part (102) is provided on the right side of the hollow square part (101), and a receiving through hole (104) is provided at the right end of the hollow circular part (102). The rivet (3) is placed inside the nail head (1). The rivet (3) includes a connecting plate (302). The surface of the connecting plate (302) is provided with a limiting abutment (301). The middle end of the connecting plate (302) is provided with an internal thread (303). A countersunk hexagonal screw (2) is threaded onto the surface of an internal thread (303), the surface of which contacts the inner cavity of a nail head (1).

2. The detachable quick-release rivet according to claim 1, characterized in that: The number of the limiting plate (301) and the receiving through hole (104) are both four, and the surface of the limiting plate (301) is movably connected to the surface of the receiving through hole (104).

3. The detachable quick-release rivet according to claim 1, characterized in that: Both sides of the accommodating through hole (104) are inclined surfaces.

4. The detachable quick-release rivet according to claim 1, characterized in that: The nail cap (1), the rivet (3) and the countersunk hexagonal screw (2) are all made of 304 stainless steel.

5. A detachable quick-release rivet according to claim 1, characterized in that: The hollow circular part (102) has a protrusion (103) at its right end, and the protrusion (103) is annular in shape.

6. A method for manufacturing a detachable quick-release rivet according to any one of claims 1-5, characterized in that, The manufacturing method includes the following steps: S1. Raw material preparation: Based on the size requirements of each component of the rivet, prepare raw materials such as 304 stainless steel bars and plates of different specifications. For example, for the rivet head (1) and the rivet (3), select stainless steel plates of appropriate thickness, while for the countersunk hexagonal screw (2), select stainless steel bars of appropriate diameter. S2. Manufacturing of nail head (1) and rivet (3) a. Mold design and manufacturing: Based on the shape and size of the nail head (1) and the rivet (3), design and manufacture a special stamping mold, strictly control the processing accuracy of the stamping mold, and ensure that the dimensional tolerance of the mold is within the allowable range; b. Stamping operation: Place the prepared stainless steel sheet into the nail head (1) mold and the rivet (3) mold of the stamping machine respectively. Apply appropriate pressure through the stamping machine to gradually shape the sheet into the approximate shape of the nail head (1) and the rivet (3). c. Cutting and trimming: After stamping, the nail head (1) blank and the rivet (3) blank may have some irregular edges and excess material. Use a laser cutting machine to cut and trim the nail head (1) blank and the rivet (3) blank, remove the excess part, and cut out the required through hole (104) on the nail head (1) blank so that its size meets the design requirements. e. Turning: The trimmed rivet (3) is clamped on a lathe and turned to create an internal thread (303) at the middle of the connecting plate (302). S3. Manufacturing of countersunk hex socket screws (2) a. Cold forging operation: The prepared stainless steel bar is placed into the cold forging machine, and the stainless steel bar is cold forged according to the shape and size of the countersunk hexagonal screw (2). During the cold forging process, the wire is gradually processed into the head and shaft shape of the countersunk hexagonal screw (2) through the action of the mold. b. Thread rolling: Use a thread rolling machine to perform thread rolling on the cold-forged countersunk hexagon socket screw (2) blank, and process the external thread on the shank of the countersunk hexagon socket screw (2); S4. Passivation treatment: The processed nail head (1), rivet (3) and countersunk hexagonal screw (2) are immersed in passivation solution. A dense passivation film is formed on the surface through chemical reaction, which enhances the corrosion resistance of the nail head (1), rivet (3) and countersunk hexagonal screw (2). S5. Assembly a. Cleaning of parts: The manufactured nail heads (1), rivets (3) and countersunk hexagonal screws (2) are cleaned by ultrasonic cleaning to remove oil stains, iron filings, processing debris and other impurities left during the processing, to ensure that the surface of each part is clean and free of impurities. After cleaning, the parts are dried to prevent rust. b. Pre-assembly inspection: Before formal assembly, pre-assembly inspection is carried out on the nail head (1), rivet (3) and countersunk hexagonal screw (2). Check the fit between the limiting plate (301) of the rivet (3) and the receiving through hole (104) of the nail head (1) to ensure that the limiting plate (301) can be smoothly inserted into the receiving through hole (104) and the fit clearance meets the design requirements. At the same time, check the thread fit between the countersunk hexagonal screw (2) and the internal thread (303) on the rivet (3) to ensure that the two can be smoothly screwed together without jamming. c. Assembly operation: First, use a wrench to rotate the external thread of the countersunk hexagon socket screw (2) into the internal thread (303) of the rivet (3). Then, place the rivet (3) into the opening of the rivet head (1) and push the countersunk hexagon socket screw (2) to move the rivet (3). While the rivet (3) moves along the inside of the rivet head (1), the limiting plate (301) around the rivet (3) can undergo elastic deformation until the limiting plate (301) is on one side of the receiving through hole (104) on the rivet head (1) under the action of movement. Then, the limiting plate (301) can be inserted into the receiving through hole (104) under the action of elastic recovery, thus completing the rivet manufacturing operation.

7. A method for manufacturing a detachable quick-release rivet according to claim 6, characterized in that: In the stamping operation of step S2b, the stamping of the nail head (1) adopts a multi-stage progressive stamping process, including blanking, pre-stretching, fine stretching and shaping processes performed in sequence. The die gap of the fine stretching process is controlled at 1.05-1.1 times the thickness of the sheet metal, the pressure of the shaping process is 1.2-1.5 times the pre-stretching pressure, and the stamping speed is 4-5 mm / s.

8. A method for manufacturing a detachable quick-release rivet according to claim 6, characterized in that: In the turning process of step S2e, the turning of the internal thread (303) is carried out using a carbide thread turning tool, with a spindle speed of 800-1200 r / min and a feed rate of 0.1-0.15 mm / r.

9. A method for manufacturing a detachable quick-release rivet according to claim 6, characterized in that: In the cold heading operation of step S3a, the cold heading process is divided into two stages: the first stage is to form the internal hexagon countersunk hole of the countersunk internal hexagon screw (2) through closed die forging, and the second stage is to form the shank of the countersunk internal hexagon screw (2) through open forging. The cold heading pressure is 80-150MPa.

10. A method for manufacturing a detachable quick-release rivet according to claim 6, characterized in that: In the passivation treatment of step S4, a nitric acid-dichromate composite passivation solution is used, the passivation solution temperature is 35-45℃, the immersion time is 20-30 minutes, and the passivation film thickness is 0.5-2 micrometers.

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