Riveting device using vaporizing foil actuator

Abstract

A riveting device using a vaporizing foil actuator is disclosed. The riveting device using a vaporizing foil actuator according to the present invention is characterized by comprising: a fixing plate that supports one side of first and second base materials arranged overlapping each other; a mounting plate having one side that supports the other side of the first and second base materials and is provided with a through hole into which a rivet is inserted; a metal foil provided on the other side of the mounting plate that is vaporized by a high current applied to both ends and generates a high-voltage shock wave; and a support plate provided on the other side of the mounting plate that covers the metal foil and guides the high-voltage shock wave toward the rivet so that the rivet penetrates and is secured to the first and second base materials. According to the present invention, as direct contact between the shock wave and the first and second base materials is minimized, damage or breakage of the base material caused by high heat and pressure generated during the vaporization process of the metal foil, as well as performance or durability degradation of the equipment due to heat accumulation during repetitive operations, can be effectively reduced. Furthermore, since relatively easy and precise shock wave control is possible, rivets of various sizes and materials can be used without significant restrictions for joining base materials of a certain thickness or dissimilar materials, and rapid, consistent, and high-quality joining processing is possible.

Description

Technology Field

[0001] The present invention relates to a riveting device using a vaporizing foil actuator, and more specifically, to a riveting device that can be used for joining not only homogeneous materials but also dissimilar materials by minimizing thermal shock and high pressure generated during the vaporization process of a metal foil. Background Technology

[0002] A vaporizing foil actuator (VFA) refers to equipment that instantaneously vaporizes a metal foil using a high-voltage pulse (100 to 150 kA) and performs various processing operations using the shock wave generated as a result (local temperature of approximately 3000 K to 6000 K and pressure of approximately 10 GPa to 100 GPa).

[0003] These vaporizing foil actuators (VFAs) offer advantages such as high speed, high precision, and low cost compared to conventional mechanical or chemical processing methods, and can be applied to various materials and shapes.

[0004] Types of processing methods using vaporizing foil actuators include shock forming, which forms a metal plate into a desired shape using a powerful shock wave generated by the vaporization of a metal foil as described in Korean Patent No. 10-2040642 (Registration Date: October 30, 2019); cladding or mechanical joining, which joins two different metals sensitive to heat under high pressure using a shock wave; and punching, which drills or cuts precise holes in a metal plate using a shock wave.

[0005] However, existing technologies utilizing vaporizing foil actuators have certain limitations, such as the possibility of damage to surrounding equipment or workpieces due to the high heat and pressure generated during the vaporization process of the metal foil, concerns regarding performance or durability degradation due to heat accumulation during repeated use, difficulty in maintaining consistent machining quality because precise control of shock waves is difficult during high-speed machining, the requirement for a complex control system to accurately control the intensity and distribution of shock waves, and the potential difficulty in machining workpieces of a certain thickness or specific materials because shock waves are not sufficiently transmitted.

[0006] Therefore, to address these issues, research and development are currently actively underway regarding the establishment of systems for efficient thermal management and precision control, as well as measures to enhance durability and safety and customized processing conditions for various materials and thicknesses.

[0007] Meanwhile, hydraulic or pneumatic riveting technology, friction stir spot welding (FSSW), and electromagnetic riveting (EMR) technology are being utilized for rapid mechanical joining between components in the manufacturing processes of automobiles and aircraft.

[0008] However, the aforementioned hydraulic or pneumatic riveting technology has quality issues that make it difficult to consistently provide high-quality mechanical connections with long fatigue life, and there are limitations on the use of large-diameter aluminum rivets or high-strength alloy rivets.

[0009] Furthermore, Friction Stir Spot Welding (FSSW) technology is a technique that joins softened components by generating frictional heat at the joint interface using a rotating cylindrical punch together with a shoulder; however, it has limitations in that it is mainly applied between similar components that can soften at similar temperatures.

[0010] Electromagnetic riveting (EMR) technology is a technique that uses electromagnetic force generated by a high-power electromagnetic coil to drive a rivet of a specific material and expand the shank to form a joint between components. It generates less heat than conventional riveting methods, making it excellent for joining dissimilar materials (especially polymer materials) and enabling rapid operation. However, it has certain limitations, such as the need for a large-capacity capacitor bank for voltage discharge to generate high magnetic force, and the fact that riveting efficiency is affected by the size and conductivity of the rivet and driver plate.

[0011] As a solution to overcome the limitations of hydraulic or pneumatic riveting technologies, friction stir spot welding (FSSW), and electromagnetic riveting (EMR) as described above, the potential for utilizing the previously explained vaporizing foil actuator is emerging; however, since no clear and specific proposals have been made yet, research and development regarding this are currently necessary. Prior art literature

[0012] Republic of Korea Registered Patent No. 10-2040642 (Registration Date: October 30, 2019) The problem to be solved

[0013] The objective of the present invention is to provide a riveting device using a vaporizing foil actuator that generates a shock wave during the process of instantaneously vaporizing a metal foil, which uses the vaporizing foil actuator as a power source to enable the use of rivets of various sizes and materials without significant restrictions for joining base materials of a certain thickness or greater, or dissimilar materials, and to enable rapid, consistent, and high-quality joining processing. means of solving the problem

[0014] The above objective is achieved by a riveting device using a vaporizing foil actuator, characterized by comprising: a fixing plate that supports one side of a first and second base material that overlaps each other; a mounting plate having one side that supports the other side of the first and second base material and has a through hole into which a rivet is inserted; a metal foil provided on the other side of the mounting plate that is vaporized by a high current applied to both ends and generates a high-voltage shock wave; and a support plate provided on the other side of the mounting plate that covers the metal foil and guides the high-voltage shock wave toward the rivet so that the rivet penetrates and is secured to the first and second base materials.

[0015] The above metal foil may be made of a strip-shaped aluminum thin film that includes a concave active region with a small cross-sectional area that increases the current density to trigger vaporization by a high current.

[0016] The above active area may be positioned to face the through hole on the other side of the mounting plate.

[0017] The above rivet may include a head having a surface facing the metal foil formed to be concave or flat; and a shank having a hollow interior and plastically deformed to penetrate one of the first and second base materials with a diameter smaller than that of the head and to form an undercut in the other, thereby binding the first and second base materials together.

[0018] The above objective is achieved by a riveting device using a vaporizing foil actuator, characterized by comprising: a fixing plate that supports one side of first and second base materials arranged overlapping each other and the head of a rivet penetrating the first and second base materials; a mounting plate having one side that supports the other side of the first and second base materials and has a through hole into which a hammer that contacts the shank of the rivet is inserted; a metal foil provided on the other side of the mounting plate that is vaporized by a high current applied to both ends and generates a high-voltage shock wave; and a support plate provided on the other side of the mounting plate that covers the metal foil and guides the high-voltage shock wave toward the hammer so that the rivet is secured to the first and second base materials by the impact of the hammer.

[0019] The metal foil above is made of a strip-shaped aluminum film including a concave active region with a small cross-sectional area that increases current density to trigger vaporization by high current, and the active region can be positioned to face the through hole on the other side of the mounting plate.

[0020] The above rivet may include: the head mounted in a concave mounting groove of the fixing plate; and the shank that is installed through the first and second base materials so as to protrude to the other surface of the first and second base materials with a diameter smaller than that of the head, and is plastically deformed to form a locking head by striking the hammer to bind the first and second base materials.

[0021] The hammer may include a striking groove formed concavely on the surface in contact with the shank in a shape corresponding to the head to form the locking head; and a guide projection fitted into a guide groove formed in the through hole to guide the striking of the hammer against the shank. Effects of the invention

[0022] According to the present invention, a fixing plate and a mounting plate having a through hole into which a rivet is inserted are arranged to support one side and the other side of a first and second base material, respectively, which are overlapped with each other. A metal foil that vaporizes by a high current applied to both ends and generates a high-voltage shock wave, and a support plate that guides the high-voltage shock wave toward the rivet so that the rivet penetrates and binds to the first and second base materials, are sequentially provided on the other side of the mounting plate. As a result, direct contact between the shock wave and the first and second base materials is minimized, thereby effectively reducing damage or breakage of the base material caused by high heat and pressure generated during the vaporization process of the metal foil, as well as the performance degradation or durability degradation of the equipment due to heat accumulation during repeated operations.

[0023] In addition, since the structure is designed so that the shock wave is concentrated at a single point—specifically the rivet in the through hole—rather than over a large area, relatively easy and precise shock wave control is possible. This allows for the use of rivets of various sizes and materials without significant restrictions for joining base materials of a certain thickness or dissimilar materials, thereby enabling rapid, consistent, and high-quality joining processing. Brief explanation of the drawing

[0024] FIG. 1 is an exploded perspective view of a riveting device using a vaporizing foil actuator according to an embodiment of the present invention. FIG. 2 is a perspective view and a front view showing the combined state of FIG. 1. Figure 3 is a cross-sectional view and a partial enlarged view along the cutting line AA of Figure 2. Figure 4 is an operational diagram illustrating the riveting process using Figure 1 step by step. FIG. 5 is an exploded perspective view of a riveting device using a vaporizing foil actuator according to another embodiment of the present invention. FIG. 6 is a perspective view and a front view showing the combined state of FIG. 1. Figure 7 is a cross-sectional view and a partial enlarged view along the cutting line AA of Figure 2. Figure 8 is an operational diagram illustrating the riveting process using Figure 5 step by step. Specific details for implementing the invention

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted in order to clarify the gist of the present invention.

[0027] FIG. 1 is an exploded perspective view of a riveting device using a vaporizing foil actuator according to an embodiment of the present invention, FIG. 2 is a perspective view and front view showing the assembled state of FIG. 1, FIG. 3 is a cross-sectional view and partial enlarged view along the cutting line AA of FIG. 2, FIG. 4 is an operational state diagram showing the riveting process using FIG. 1 in stages, FIG. 5 is an exploded perspective view of a riveting device using a vaporizing foil actuator according to another embodiment of the present invention, FIG. 6 is a perspective view and front view showing the assembled state of FIG. 1, FIG. 7 is a cross-sectional view and partial enlarged view along the cutting line AA of FIG. 2, FIG. 8 is an operational state diagram showing the riveting process using FIG. 5 in stages.

[0028] In the description of the invention and claims, terms such as up (up), down (down), left and right (side or lateral), front (front, front), and back (back, rear) that designate directions are determined based on the relative positions between drawings and configurations for the convenience of explanation, rather than for the purpose of limiting rights. The three axes may rotate to correspond to each other and change, and unless otherwise specifically defined, they shall be followed.

[0030] The riveting device (100) using a vaporizing foil actuator according to the present invention is an invention designed to effectively reduce damage or breakage of the base material caused by high heat and pressure generated during the vaporization process of the metal foil (130), as well as the performance or durability degradation of the equipment due to heat accumulation during repeated operations, and to enable rapid and consistent high-quality joining processing by allowing rivets (10) of various sizes and materials to be used without significant restrictions for joining base materials of a certain thickness or more or dissimilar materials through easy and precise shock wave (HS) control.

[0031] In order to specifically implement the function or operation described above, a riveting device (100) using a vaporizing foil actuator according to an embodiment of the present invention may be configured to include a fixing plate (110), a mounting plate (120), a metal foil (130), and a support plate (140), as shown in FIGS. 1 to 4.

[0032] Below, the aforementioned components will be explained in detail.

[0033] First, the fixing plate (110) is a plate-shaped component that is clamped by a bolt or a predetermined press device (not shown) to support one side of the first and second base materials (M1, M2) that are overlapped with each other.

[0034] Here, the first and second base materials (M1, M2) may be metal plates of the same or different types having good ductility, such as standard steel or aluminum alloy, which can be easily self-pierced through a rivet (10) that is pressed in at high speed by the shock wave (HS) of the metal foil (130) to be described later.

[0035] Alternatively, at least one of the first base material (M1) and the second base material (M2) may be a synthetic resin or composite material plate, because cracking or tearing of the synthetic resin, etc. can be reduced due to the rivet (10) being pressed in at high speed, thereby enabling a strong bond between dissimilar materials (metal and synthetic resin).

[0036] These first and second base materials (M1, M2) may include a flat plate shape as shown in FIGS. 1 to 3, as well as a predetermined curved surface as shown in FIGS. 3.

[0037] At this time, a support surface corresponding to the shape of one side of the first and second base materials (M1, M2) is formed on the fixing plate (110), and as shown in FIGS. 3 and 4, a concave molding groove (112) that accommodates the first and second base materials (M1, M2) that are deformed and bound by the magnetic penetration of the rivet (10) may be formed at a position facing the rivet (10).

[0038] The mounting plate (120) is a plate-shaped component in which one side supports the other side of the first and second base materials (M1, M2) described above, and the other side is pressed by the support plate (140) described later, and may be provided with a through hole (122) into which a rivet (10) is inserted.

[0039] The through hole (122) is a component formed in the direction toward the first and second base materials (M1, M2) in the support plate (140) to be described later, and guides the movement of the high-pressure shock wave (HS) and the rivet (10).

[0040] At least one of these through holes (122) may be formed corresponding to the joining point of the first and second base materials (M1, M2) with a shape and diameter that allows for the insertion of a rivet (10) to be described later, with a predetermined clearance.

[0041] At this time, a predetermined clearance space can be connected to an exhaust line (not shown) that exhausts high-pressure shock waves (HS) to the outside, and can be utilized to adjust the intensity of the shock waves (HS) applied to the rivet (10) by changing the shape or increasing or decreasing the clearance space.

[0042] The rivet (10) is a component that mutually binds the first and second base materials (M1, M2) through self-piercing of the first and second base materials (M1, M2), and can be formed with a structure including a head (12) and a shank (14) as shown in FIGS. 1, FIGS. 3 and FIGS. 4.

[0043] The head (12) is a component that forms one end of the rivet (10), with one side facing the metal foil (130) formed not in a convex shape but in a concave or flat shape to fully receive the high-pressure shock wave (HS).

[0044] Due to the shape of this head (12), the high-pressure shock wave (HS) can be fully converted into a driving force that presses the rivet (10) toward the first and second base materials (M1, M2) described above at high speed.

[0045] The shank (14) is a component that forms the other end of the rivet (10) with a hollow (14b) formed inside, having a diameter smaller than that of the head (12) described above.

[0046] As shown in FIG. 4, this shank (14) penetrates one of the first and second base materials (M1, M2) described above by high-speed pressing of the rivet (10), and is then plastically deformed to form an undercut (14a) in the other by the molding groove (112) described above, and in this process performs the function of binding the first and second base materials (M1, M2).

[0047] Meanwhile, although not specifically illustrated, a fixing projection may be further provided in the hollow (14b) of the shank (14), which is formed in a polygonal column shape protruding from the bottom surface of the head (12) and has a groove formed on the protruding surface.

[0048] These fixed protrusions are pressed into the base material when penetrating either of the first or second base materials (M1, M2), thereby suppressing relative rotation between the first and second base materials (M1, M2) and performing the function of further strengthening the bond between the first and second base materials (M1, M2).

[0049] The metal foil (130) is a component provided on the other side of the mounting plate (120) described above, which is vaporized by a high current applied to both ends as shown in FIG. 4 and instantaneously generates a high-voltage shock wave (HS).

[0050] This metal foil (130) can be electrically connected to a current source (CS) composed of a predetermined capacitor bank as shown in FIGS. 1 to 3, and configured to receive a stored high current (100KA to 150KA) instantaneously (15us or less) according to the operation control of the current source (CS).

[0051] The metal foil (130) according to an embodiment of the present invention may be made of a strip-shaped aluminum thin film including an active region (132) that increases current density.

[0052] Specifically, the metal foil (130) can be made of an aluminum film with a thickness of approximately 0.01 mm to 0.1 mm to increase the density of the current provided from the current source (CS).

[0053] And the active region (132) can be formed into a gourd-shaped structure that narrows concavely in the width direction of the metal foil (130) and has a smaller cross-sectional area, as shown in FIG. 1, so that the increased current density in the metal foil (130) can be further concentrated in the active region (132), as shown in FIG. 4, so that vaporization can be directly triggered.

[0054] This active area (132) may be positioned to face the through hole (122) on the other side of the aforementioned mounting plate (120) so that a high-voltage shock wave (HS) generated during the vaporization process by the provided high current can be provided to the through hole (122).

[0055] The above shock wave (HS) can be varied by changing the thickness or material of the metal foil (130), the magnitude and duration of the applied current, the shape of the active area (132), the cross-sectional area of ​​the active area (132) or the degree of non-conductive material content, the shape or clearance of the through hole (122), etc.

[0056] By controlling the shock wave (HS) in various ways, rivets (10) of various sizes and materials can be used or applied to first and second base materials (M1, M2) of various types and thicknesses without significant restrictions.

[0057] In addition, since the structure is such that the shock wave (HS) is concentrated at a single point, the through hole (122), rather than over a large area, relatively uniform and precise control of the shock wave (HS) is possible, allowing rivets (10) of various sizes and materials to be used without significant restrictions for joining base materials of a certain thickness or different materials, and enabling rapid and consistent high-quality joining processing.

[0058] The metal foil (130) described above, although not specifically illustrated, can be insulated from the mounting plate (120), rivet (10), and support plate (140) described later through a specific coating or film to prevent leakage of the applied high current.

[0059] The support plate (140) is a plate-shaped component that covers the metal foil (130) described above to guide the high-pressure shock wave (HS) toward the rivet (10) inserted into the through hole (122) and is provided on the other side of the mounting plate (120) to press the mounting plate (120).

[0060] This support plate (140) is clamped to the above-described fixing plate (110) by means of a bolt or a predetermined press device (not shown), thereby enabling the shock wave (HS) of the metal foil (130) to be fully delivered to the through hole (122) and rivet (10) of the mounting plate (120) without external leakage.

[0061] Due to the provision of the shock wave (HS) as described above, the rivet (10) described above is accelerated at high speed toward the first and second base materials (M1, M2) as shown in FIG. 4, penetrates one of the first and second base materials (M1, M2), and is plastically deformed to form an undercut (14a) in the other by the molding groove (112) described above, thereby firmly binding the first and second base materials (M1, M2).

[0063] Meanwhile, a riveting device (100') using a vaporizing foil actuator according to another embodiment of the present invention may be configured to include a fixing plate (110), a mounting plate (120), a metal foil (130), and a support plate (140), similar to the above-described embodiment, as shown in FIGS. 5 to 8.

[0064] The fixing plate (110) is a plate-shaped component provided to support one side of the first and second base materials (M1, M2) that are overlapped with each other, and at the same time to support the head (12') of the rivet (10') installed to penetrate the first and second base materials (M1, M2).

[0065] This fixing plate (110) is clamped together with the support plate (140) of another embodiment by means of a bolt or a predetermined press device (not shown), thereby enabling the shock wave (HS) of the metal foil (130) to be fully delivered to the through hole (122) and hammer (124) of the mounting plate (120) without external leakage, as shown in FIGS. 7 and 8.

[0066] Here, the first and second base materials (M1, M2) may be metal plates such as standard steel or aluminum alloy having good ductility as in the example, as well as metal plates with low ductility such as magnesium alloy, ultra-high strength steel (UHSS) or aircraft aluminum, synthetic resin or composite material plates, since mounting holes for installing the rivet (10') are formed in the first and second base materials (M1, M2) rather than self-penetrating of the rivet (10').

[0067] In the above-described fixing plate (110), a support surface corresponding to the shape of one side of the first and second base materials (M1, M2) is formed, and as shown in FIGS. 5, 7 and 8, a concave installation groove (114) in which the head (12') of a rivet (10') installed through the mounting hole of the first and second base materials (M1, M2) is seated may be formed at a position facing the through hole (122).

[0068] The mounting plate (120) is a plate-shaped component in which one side supports the other side of the first and second base materials (M1, M2) described above, and the other side is pressed by the support plate (140) described later. As shown in FIGS. 7 and 8, it may be provided with a through hole (122) into which a hammer (124) that contacts the shank (14') of the rivet (10') is inserted.

[0069] The through hole (122) is a component formed in the direction toward the first and second base materials (M1, M2) from the support plate (140) to guide the movement of the hammer (124) that strikes the rivet (10') with a high-pressure shock wave (HS).

[0070] At least one such through hole (122) may be formed corresponding to the joining point of the first and second base materials (M1, M2) with a shape and diameter that allows for the insertion of the hammer (124) described later, with a predetermined clearance.

[0071] At this time, a predetermined clearance space can be connected to an exhaust line (not shown) that exhausts high-pressure shock waves (HS) to the outside, and can be utilized to adjust the intensity of the shock waves (HS) applied to the hammer (124) by changing the shape or increasing or decreasing the clearance space.

[0072] The rivet (10') is a component that is installed through the mounting holes of the first and second base materials (M1, M2) and is deformed by striking the hammer (124) described later to mutually bind the first and second base materials (M1, M2). As shown in FIGS. 5, 7 and 8, it may be formed with a structure including a head (12') and a shank (14').

[0073] The head (12') here is a component that extends outwardly beyond the shank (14') penetrating the mounting hole to support one side of the first and second base materials (M1, M2) around the mounting hole, thereby forming one end of the rivet (10'), and may have a convex surface at the end that is seated and mounted in the aforementioned mounting groove (114).

[0074] The shank (14') here is a component that forms the other end of the rivet (10') by being installed through the first and second base materials (M1, M2) so as to protrude to the other side of the first and second base materials (M1, M2) with a diameter smaller than that of the head (12') described above.

[0075] As shown in FIG. 8, this shank (14') is continuously plastically deformed by the impact of a high-speed moving hammer (124), and performs the function of binding the first and second base materials (M1, M2) in the process of being finally shaped into a locking head (14a') by the impact groove (124a) of the hammer (124).

[0076] The hammer (124) is a component that strikes the rivet (10') so that the first and second base materials (M1, M2) are bonded without the rivet (10') being directly exposed to a high-pressure shock wave (HS).

[0077] In order to fully receive the high-pressure shock wave (HS) and strike the rivet (10'), the surface facing the metal foil (130) may be formed in a concave or flat shape rather than a convex shape, and as shown in FIGS. 7 and 8, it may be configured to include a striking groove (124a) and a guide projection (124b), etc.

[0078] As shown in FIG. 7, the impact groove (124a) is formed concavely in a shape corresponding to the head (12') on the surface in contact with the shank (14') of the rivet (10') and serves as a component for forming the locking head (14a'), and can, of course, be manufactured in various shapes as needed.

[0079] And the guide projection (124b) is a component that is fitted into the guide groove (122a) formed in the through hole (122) described above, as shown in FIG. 7 (b), guides the striking of the hammer (124) against the shank (14'), and prevents the hammer (124) from coming off.

[0080] The metal foil (130) is a component provided on the other side of the mounting plate (120) described above, which is vaporized by a high current applied to both ends as shown in FIG. 8 and instantaneously generates a high-voltage shock wave (HS).

[0081] This metal foil (130) can be electrically connected to a current source (CS) composed of a predetermined capacitor bank as shown in FIGS. 5 to 7, and configured to receive a stored high current (100KA to 150KA) instantaneously (15us or less) according to the operation control of the current source (CS).

[0082] A metal foil (130) according to another embodiment may also be made of a strip-shaped aluminum thin film including an active region (132) that increases current density, similar to the embodiment.

[0083] Specifically, the metal foil (130) can be made of an aluminum film with a thickness of approximately 0.01 mm to 0.1 mm to increase the density of the current provided from the current source (CS).

[0084] And the active region (132) can be formed into a gourd-shaped structure that narrows concavely in the width direction of the metal foil (130) and has a smaller cross-sectional area, as shown in FIG. 5, so that the increased current density in the metal foil (130) can be further concentrated in the active region (132), as shown in FIG. 8, to directly trigger vaporization.

[0085] This active area (132) may be positioned to face the through hole (122) on the other side of the aforementioned mounting plate (120) so that a high-voltage shock wave (HS) generated during the vaporization process by the provided high current can be provided to the through hole (122).

[0086] The above shock wave (HS) can be varied by changing the thickness or material of the metal foil (130), the magnitude and duration of the applied current, the shape of the active area (132), the cross-sectional area of ​​the active area (132) or the degree of non-conductive material content, the shape or clearance of the through hole (122), etc.

[0087] By controlling the shock wave (HS) in various ways, rivets (10') of various sizes and materials can be used or applied to first and second base materials (M1, M2) of various types and thicknesses without significant restrictions.

[0088] The metal foil (130) described above, although not specifically illustrated, can also be insulated with respect to the mounting plate (120), hammer (124) and the support plate (140) described later through a predetermined coating or film to prevent leakage of the applied high current.

[0089] The support plate (140) is a plate-shaped component that covers the metal foil (130) described above to guide the high-pressure shock wave (HS) toward the hammer (124) inserted into the through hole (122) and is provided on the other side of the mounting plate (120) to press the mounting plate (120).

[0090] This support plate (140) is clamped to the above-described fixing plate (110) by means of a bolt or a predetermined press device (not shown), thereby enabling the shock wave (HS) of the metal foil (130) to be fully delivered to the through hole (122) and hammer (124) of the mounting plate (120) without external leakage.

[0091] Due to the provision of the shock wave (HS) as described above, the hammer (124) described above is accelerated at high speed toward the first and second base materials (M1, M2) as shown in FIG. 8, striking the shank (14') of the rivet (10') so that it undergoes plastic deformation, and by finally deforming the shank (14') into a locking head (14a') through the striking groove (124a) of the hammer (124), the first and second base materials (M1, M2) can be firmly bound together.

[0093] Although specific embodiments of the present invention have been described and illustrated above, it is obvious to those skilled in the art that the present invention is not limited to the described embodiments and can be modified and varied in various ways without departing from the spirit and scope of the invention. Accordingly, such modifications or variations should not be understood individually from the technical spirit or perspective of the present invention, and the modified embodiments should be considered to fall within the scope of the claims of the present invention. Explanation of the symbols

[0094] 10: Rivet 12: Head 14: Shank 14a: Undercut 14b: China 10': Rivet 12': Head 14': Shank 14a': Lock head M1, M2: 1st base material, 2nd base material 100,100': Riveting device using a vapor-type foil actuator 110: Fixing plate 112: Plastic Surgery Home 114: Installation Home 120: Mounting plate 122: Penetrating hole 122a: Guide Home 124: Hammer 124a: Batting home 124b: Guide projection 130: Metal foil 132: Active area HS: High-pressure shock wave CS: Current source (capacitor bank) 140: Support plate

Claims

Claim 1 delete Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A fixing plate supporting one side of first and second base materials arranged overlapping each other and the head of a rivet penetrating the first and second base materials; a mounting plate having one side supporting the other side of the first and second base materials and having a through hole into which a hammer contacting the shank of the rivet is inserted; a metal foil provided on the other side of the mounting plate that vaporizes by a high current applied to both ends and generates a high-voltage shock wave; and a support plate provided on the other side of the mounting plate covering the metal foil to guide the high-voltage shock wave toward the hammer so that the rivet is secured to the first and second base materials by the impact of the hammer, wherein the rivet comprises the head mounted in a concave mounting groove of the fixing plate; A riveting device using a vaporizing foil actuator, characterized by comprising a shank that is installed through the first and second base materials so as to protrude toward the other surface of the first and second base materials with a diameter smaller than that of the head, and is plastically deformed to form a locking head by striking the hammer to bind the first and second base materials, wherein the hammer comprises: a striking groove formed concavely in a shape corresponding to the head on the surface contacting the shank to form the locking head; and a guide projection fitted into a guide groove formed in the through hole to guide the striking of the hammer against the shank. Claim 6 A riveting device using a vaporizing foil actuator according to claim 5, wherein the metal foil is made of a strip-shaped aluminum film including a concave active region with a small cross-sectional area that increases current density to trigger vaporization by high current, and the active region is arranged to face the through hole on the other side of the mounting plate. Claim 7 delete Claim 8 delete

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