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WO2008032130A1 - Tool and procedure for joining of overlapping plates by piercing - Google Patents

Tool and procedure for joining of overlapping plates by piercing Download PDF

Info

Publication number
WO2008032130A1
WO2008032130A1 PCT/HU2007/000083 HU2007000083W WO2008032130A1 WO 2008032130 A1 WO2008032130 A1 WO 2008032130A1 HU 2007000083 W HU2007000083 W HU 2007000083W WO 2008032130 A1 WO2008032130 A1 WO 2008032130A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
jaw
plates
cylindrical body
diameter
Prior art date
Application number
PCT/HU2007/000083
Other languages
French (fr)
Inventor
Gyula BALÁZS
Original Assignee
Balazs Gyula
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balazs Gyula filed Critical Balazs Gyula
Priority to EP07804525A priority Critical patent/EP2061611A1/en
Publication of WO2008032130A1 publication Critical patent/WO2008032130A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02—Jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/034—Joining superposed plates by piercing

Definitions

  • the object of the invention is a tool and a procedure for the clamping of overlapping plates.
  • Overlapping plates are frequently clamped together by drilling holes in the overlapping parts of the plates and fastening them with screws, rivets or by spot-welding.
  • some plating works such as false ceilings, roofing, and other internal and external architectural works (such as precision-electronic housing, etc.)
  • holes must be bored on site, as it is difficult to know beforehand where the plates will overlap or, from an aesthetical point of view, where it will be practical to position the fastening elements. It is recommendable to first fasten the overlapping plates temporarily and fasten them later permanently with screws.
  • the clamping device depicted in patent description DE 44 24 493, used for the clamping of two, at least partially overlapping plates, is a tool made up of two tool shanks fastened to each other and rotating around a pin; one clamp shank has a prick with a cylindrical body and a conical piercing end, and the other shank is provided with a counterpart with a borehole against the prick.
  • the diameter of the borehole is larger than the diameter of the piercing prick.
  • the piercing prick moves in the cylindrical hole coaxial Iy to the borehole, in a straight line, and enters the borehole with a radial play.
  • the tool pierces the plates to be clamped after a local-tangential elongation process, and presses the rim of the hole into the borehole, thereby clamping the plates (with their own material).
  • the fastening power of this method is relatively weak and is easily undone.
  • the purpose of this invention is the creation of a tool and a procedure for the clamping of overlapping plates that enables us to create a relatively strong, durable fastening method in a simple, easy and fast manner.
  • the invention is based on the perception that if a hand tool is provided with a proper piercing end and a borehole opposite it, then it is able to clamp together thin steel or plastic plates in two steps by placing the overlapping plates between the jaws of the tool and pressing the jaws together in the first step, thereby (by over-elongation) perforating the plates, and then in a second step pressing the plates with the tool in the same point from the other side. By doing this, the pieces of the plates bent and during the perforation made in the first step and now protruding from the plates will interlace and fasten the plates.
  • the task is solved with a tool made up of two tool parts, fastened to each other and rotating around a pin; both tool parts consist of a clamp shank projecting from the pin in one direction and a jaw reaching from the pin in the other direction; the first jaw has a prick towards the second jaw with a cylindrical body that comes to a conical piercing end, and in the second jaw, against the prick there is a borehole whose diameter is larger than the diameter of the cylindrical body.
  • the tool object of the invention has the characteristic that the cylindrical body of the prick is connected to the second jaw via a base part, and the diameter of the base part at its connection with the cylindrical body is identical to the diameter of the cylindrical body; the base part is gradually widened from the cylindrical body to the second jaw, and its diameter at the connection to the second jaw is larger than the diameter of the borehole.
  • the base part is of truncated conical shape.
  • the borehole is produced as a cylindrical opening of a ring, sleeve, shear plate or any other similar counterpart on the first jaw.
  • the collar of the borehole is chamfered with respect to the shape of the base part.
  • the invention also implies a procedure for the clamping of overlapping plates with the use of the tool object of the invention.
  • the plates to be clamped together are fitted together, the overlapping part is inserted between the tool jaws, the piercing end of the prick is focused on a single clamping point, and by squeezing the clamp shanks of the tool the plates are punched through; then the tool is opened, and the plates are removed.
  • the tool or the plates are turned upside down, and the piercing end of the prick is inserted into the opening produced at the clamping point from the other side, and then by closing the tool again the plates are permanently clamped together in their own material.
  • Figure 1 shows a lateral sketch, partly segmented, of a preferable version of the invented tool.
  • Figure 2 shows the positioning step of the invented procedure.
  • Figure 3 shows the elongation step.
  • Figure 4 shows the perforation step.
  • Figure 5 shows the back-chamfering step.
  • Figure 6 shows the back-bending step.
  • Figure 7 shows the back-pressing step.
  • the invented tool is made up of two tool parts fastened to each other and rotating around a pin (1). Both tool parts are provided with a clamp shank (2, 3) projecting from the pin (1) in one direction and with a jaw (4, 5) reaching from the pin (1) in the other direction.
  • the first jaw (4) is provided with a borehole (6) whose diameter is d1.
  • the diameter d2 of the cylindrical body (9) of the prick (7) is smaller than the diameter of the d1 of the borehole (6).
  • the borehole (6) and the prick (7) are equally distanced from the pin (1), they move around the same radius when the clamp shanks (2, 3) are pressed together and, due to the difference in d1 and d2, the cylindrical body (9) of the prick (7) enters the borehole (6) with a radial play. When using the tool, this play permits the entrance of the plates' punched material.
  • the prick (7) is provided with a base part (10).
  • the base part (10) is gradually widened from the cylindrical body (9) to the second jaw (5), and is preferably of a truncated conical shape.
  • the diameter of the base part (10) at the connection to the cylindrical body (9) is the same as the diameter d2 of the cylindrical body (9), and at the connection to the second jaw (5) its diameter is d3.
  • Diameter d3 is larger than the diameter d1 of the borehole (6).
  • the borehole (6) on the first jaw (4) is produced as a cylindrical opening of a ring, sleeve, shear plate or any other similar counterpart.
  • the collar of the borehole (6) is chamfered with respect to the shape of the base part.
  • d1 2.8-4.2 mm, preferably 3.5 mm
  • d2 0.8-2.8 mm, preferably 1.5 mm
  • d3 2.9-8.0 mm, preferably 4 mm
  • the height of the base part (10) is 0.5-4 mm, preferably 1 mm
  • the height of the cylindrical body (9) is 1.5-5.0 mm, preferably 2 mm
  • the height of the piercing end (8) is 0.2-5.0 mm, preferably 1 mm.
  • Aforementioned geometrical parameters are determined depending on the collective thickness of the plates to be clamped together in such a way that the difference in diameter between the d2 diameter of the cylindrical body (9) and the d1 diameter of the borehole (6) shall allow for the back-chamfering of more than twice the collective thickness of the plates to be clamped.
  • the piercing end (8) is of hemispherical shape.
  • the plates (11 , 12) to be clamped together are fitted together, the overlapping parts are fastened by hand, by vice or by any other tool for this purpose, and are inserted between the tool jaws (4, 5) provided with borehole (6) and prick (7).
  • This is the initial situation for the procedure described in the invention ( Figure 2).
  • the piercing end (8) of the prick (7) is focused on a single clamping point, and the clamp shanks (2, 3) of the tools are squeezed together, thereby moving and pressing the jaws (4, 5) against each other.
  • This is an intermediate step in the procedure, i.e. the elongation step, depicted on Figure 3.
  • the prick (7) Upon pressing of the tool shanks, the prick (7) punches the plates and the rim or chamfer of the hole is pressed into the space between the borehole (6) and the cylindrical body (9) of the prick (7) (perforation step, Figure 4).
  • the tool is then opened and the plates are removed, though still held together to prevent slipping, and the tool or the plates are turned upside down, so that according to Figure 5 the piercing end (8) of the prick (9) may be positioned into the opening at the clamping point to perform the back-chamfering.
  • the tool object of the invention is simple, cheap and easy to handle.
  • the tool and the procedure ensure fast and easy, relatively strong and long-fasting clamping. It does not require preparation, it is sufficient to grab the plates with one hand, and use the tool with the other.
  • the invented procedure is not only applicable to the hand tool described in detail above, but also to any other tool - even tools guided by microprocessor - provided with the jaw types described above.
  • the tool and the procedure are easily applied for the construction of models, toys, at school workshops and for the elaboration of visual aids, preferably made of thin steel or plastic plate, or even cans or bottles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

The tool is made up of two tool parts fastened to each other and rotating around a pin (1); both tool parts are provided with a clamp shank (2, 3) projecting from the pin (1) in one direction and with a jaw (4, 5) reaching from the pin (1) in the other direction. The first jaw (4) has a prick (7) towards the second jaw (5) with a cylindrical body (9) that comes to a conical piercing end (8). On the second jaw (5), against the prick (7) there is a borehole (6) whose diameter (d1) is larger than the diameter (d2) of the cylindrical body (9) of the prick (7). The cylindrical body (9) is connected to the second jaw (5) via a base part (10). The diameter of this base part (10) at its connection with the cylindrical body (9) is identical to the diameter (d2) of the cylindrical body (9). The base part (10) is gradually widened from the cylindrical body (9) to the second jaw (5); its diameter (d3) at the connection to the second jaw (5) is larger than the diameter (d1) of the borehole (6). During the procedure, the plates to be clamped together are fitted together, the overlapping part is inserted between the tool jaws (4, 5), the piercing end (8) of the prick (7) is focused on a single clamping point, and by squeezing the clamp shanks (2, 3) of the tools the plates are punched through; then the tool is opened, and the plates are removed. After the removal of the punched plates, the tool or the plates are turned upside down, and the piercing end (8) of the prick (7) is inserted into the opening produced at the clamping point from the other side, and then by closing the tool again the plates are permanently clamped together in their own material.

Description

TOOL AND PROCEDURE FOR JOINING OF OVERLAPPING PLATES BY PIERCING
The object of the invention is a tool and a procedure for the clamping of overlapping plates.
Overlapping plates are frequently clamped together by drilling holes in the overlapping parts of the plates and fastening them with screws, rivets or by spot-welding. In some plating works, such as false ceilings, roofing, and other internal and external architectural works (such as precision-electronic housing, etc.), holes must be bored on site, as it is difficult to know beforehand where the plates will overlap or, from an aesthetical point of view, where it will be practical to position the fastening elements. It is recommendable to first fasten the overlapping plates temporarily and fasten them later permanently with screws. The clamping device depicted in patent description DE 44 24 493, used for the clamping of two, at least partially overlapping plates, is a tool made up of two tool shanks fastened to each other and rotating around a pin; one clamp shank has a prick with a cylindrical body and a conical piercing end, and the other shank is provided with a counterpart with a borehole against the prick. The diameter of the borehole is larger than the diameter of the piercing prick. The piercing prick moves in the cylindrical hole coaxial Iy to the borehole, in a straight line, and enters the borehole with a radial play. The tool pierces the plates to be clamped after a local-tangential elongation process, and presses the rim of the hole into the borehole, thereby clamping the plates (with their own material). The fastening power of this method is relatively weak and is easily undone.
For certain plating works, mostly when using thin flexible plates, it is not necessary and not even practical to use rivets or screws for fastening, but they also require long-lasting and reliable clamping.
The purpose of this invention is the creation of a tool and a procedure for the clamping of overlapping plates that enables us to create a relatively strong, durable fastening method in a simple, easy and fast manner.
The invention is based on the perception that if a hand tool is provided with a proper piercing end and a borehole opposite it, then it is able to clamp together thin steel or plastic plates in two steps by placing the overlapping plates between the jaws of the tool and pressing the jaws together in the first step, thereby (by over-elongation) perforating the plates, and then in a second step pressing the plates with the tool in the same point from the other side. By doing this, the pieces of the plates bent and during the perforation made in the first step and now protruding from the plates will interlace and fasten the plates.
According to the invention, the task is solved with a tool made up of two tool parts, fastened to each other and rotating around a pin; both tool parts consist of a clamp shank projecting from the pin in one direction and a jaw reaching from the pin in the other direction; the first jaw has a prick towards the second jaw with a cylindrical body that comes to a conical piercing end, and in the second jaw, against the prick there is a borehole whose diameter is larger than the diameter of the cylindrical body. The tool object of the invention has the characteristic that the cylindrical body of the prick is connected to the second jaw via a base part, and the diameter of the base part at its connection with the cylindrical body is identical to the diameter of the cylindrical body; the base part is gradually widened from the cylindrical body to the second jaw, and its diameter at the connection to the second jaw is larger than the diameter of the borehole.
According to a preferable version of the tool, the base part is of truncated conical shape.
The bending of the lower rim or collar achieved through the truncated conical shape ensures the proper direction of back-pressing.
According to another preferable version of the invention, the borehole is produced as a cylindrical opening of a ring, sleeve, shear plate or any other similar counterpart on the first jaw.
According to another preferable version of the invention, the collar of the borehole is chamfered with respect to the shape of the base part.
The invention also implies a procedure for the clamping of overlapping plates with the use of the tool object of the invention. During the procedure, the plates to be clamped together are fitted together, the overlapping part is inserted between the tool jaws, the piercing end of the prick is focused on a single clamping point, and by squeezing the clamp shanks of the tool the plates are punched through; then the tool is opened, and the plates are removed. After the removal of the punched plates, the tool or the plates are turned upside down, and the piercing end of the prick is inserted into the opening produced at the clamping point from the other side, and then by closing the tool again the plates are permanently clamped together in their own material.
The invention is further detailed in the attached drawings. The drawings include: Figure 1 shows a lateral sketch, partly segmented, of a preferable version of the invented tool. Figure 2 shows the positioning step of the invented procedure. Figure 3 shows the elongation step. Figure 4 shows the perforation step. Figure 5 shows the back-chamfering step. Figure 6 shows the back-bending step. Figure 7 shows the back-pressing step.
The invented tool is made up of two tool parts fastened to each other and rotating around a pin (1). Both tool parts are provided with a clamp shank (2, 3) projecting from the pin (1) in one direction and with a jaw (4, 5) reaching from the pin (1) in the other direction. The first jaw (4) is provided with a borehole (6) whose diameter is d1. On the second jaw (5), against the borehole (6) and towards the first jaw (4) there is a prick (7) with a cylindrical body (9) ending in a piercing end (8). The diameter d2 of the cylindrical body (9) of the prick (7) is smaller than the diameter of the d1 of the borehole (6). Since the borehole (6) and the prick (7) are equally distanced from the pin (1), they move around the same radius when the clamp shanks (2, 3) are pressed together and, due to the difference in d1 and d2, the cylindrical body (9) of the prick (7) enters the borehole (6) with a radial play. When using the tool, this play permits the entrance of the plates' punched material.
Between the cylindrical body (9) and the second jaw (5), the prick (7) is provided with a base part (10). The base part (10) is gradually widened from the cylindrical body (9) to the second jaw (5), and is preferably of a truncated conical shape. The diameter of the base part (10) at the connection to the cylindrical body (9) is the same as the diameter d2 of the cylindrical body (9), and at the connection to the second jaw (5) its diameter is d3. Diameter d3 is larger than the diameter d1 of the borehole (6).
In another preferable version of the tool, the borehole (6) on the first jaw (4) is produced as a cylindrical opening of a ring, sleeve, shear plate or any other similar counterpart. Correspondingly, the collar of the borehole (6) is chamfered with respect to the shape of the base part.
In another preferable version of the tool, its geometric parameters are: d1 = 2.8-4.2 mm, preferably 3.5 mm; d2 = 0.8-2.8 mm, preferably 1.5 mm; and d3 = 2.9-8.0 mm, preferably 4 mm; the height of the base part (10) is 0.5-4 mm, preferably 1 mm; the height of the cylindrical body (9) is 1.5-5.0 mm, preferably 2 mm, whereas the height of the piercing end (8) is 0.2-5.0 mm, preferably 1 mm.
Aforementioned geometrical parameters are determined depending on the collective thickness of the plates to be clamped together in such a way that the difference in diameter between the d2 diameter of the cylindrical body (9) and the d1 diameter of the borehole (6) shall allow for the back-chamfering of more than twice the collective thickness of the plates to be clamped.
In another preferable version of the tool, the piercing end (8) is of hemispherical shape.
According to the invented procedure, the plates (11 , 12) to be clamped together are fitted together, the overlapping parts are fastened by hand, by vice or by any other tool for this purpose, and are inserted between the tool jaws (4, 5) provided with borehole (6) and prick (7). This is the initial situation for the procedure described in the invention (Figure 2).
The piercing end (8) of the prick (7) is focused on a single clamping point, and the clamp shanks (2, 3) of the tools are squeezed together, thereby moving and pressing the jaws (4, 5) against each other. This is an intermediate step in the procedure, i.e. the elongation step, depicted on Figure 3.
Upon pressing of the tool shanks, the prick (7) punches the plates and the rim or chamfer of the hole is pressed into the space between the borehole (6) and the cylindrical body (9) of the prick (7) (perforation step, Figure 4).
The tool is then opened and the plates are removed, though still held together to prevent slipping, and the tool or the plates are turned upside down, so that according to Figure 5 the piercing end (8) of the prick (9) may be positioned into the opening at the clamping point to perform the back-chamfering.
The tool is pressed together once again (this procedure has another intermediate step, back-bending, shown on Figure 6), while bending the rim created during the punching with the base part (10) of the prick (7) that broadens towards the second jaw (5), and thereby permanently fastening the plates to each other. Figure 7 shows the tool pressed together to the maximum, in-between the clamped plates. After opening the tool, the clamped plates are removed from the prick (7), and from between the jaws (4, 5).
The tool object of the invention is simple, cheap and easy to handle. The tool and the procedure ensure fast and easy, relatively strong and long-fasting clamping. It does not require preparation, it is sufficient to grab the plates with one hand, and use the tool with the other.
The invented procedure is not only applicable to the hand tool described in detail above, but also to any other tool - even tools guided by microprocessor - provided with the jaw types described above.
The tool and the procedure are easily applied for the construction of models, toys, at school workshops and for the elaboration of visual aids, preferably made of thin steel or plastic plate, or even cans or bottles.

Claims

Claims
1. A tool for the clamping of overlapping plates where the tool is made up of two tool parts that are fastened to each other and can be turned around a pin (1); both tool parts consist of a clamp shank (2, 3) projecting from the pin (1) in one direction and a jaw (4, 5) reaching from the pin (1) in the other direction; the first jaw (4) has a prick (7) towards the second jaw (5) with a cylindrical body (9) that comes to a conical piercing end (8), and in the second jaw (5), against the prick (7) there is a borehole (6) whose diameter (d1) is larger than the diameter (d2) of the cylindrical body (9) of the prick (7) characterized in that the cylindrical body (9) is connected to the second jaw (5) via a base part (10), and the diameter of the base part (10) at its connection with the cylindrical body (9) is identical to the diameter (d2) of the cylindrical body (9); the base part (10) is gradually widened from the cylindrical body (9) to the second jaw (5), and its diameter (d3) at the connection to the second jaw (5) is larger than the diameter (d1) of the borehole (6).
2. A tool according to claim 1 characterized in that the base part (10) is of truncated conical shape.
3. A tool according to claim 1 or 2 characterized in that in the first jaw (4) the borehole (6) is produced as a cylindrical opening of a ring, sleeve, shear plate or any other similar counterpart.
4. A tool according to any of claims 1-3 characterized in that the collar of the borehole is chamfered with respect to the shape of the base part (10).
5. A tool according to any of claims 1-4 characterized in that its geometric parameters are: d1 = 2.8-4.2 mm, preferably 3.5 mm; d2 = 0.8-2.8 mm, preferably 1.5 mm; and d3 = 2.9-8.0 mm, preferably 4 mm; the height of the base part (10) is 0.5-4 mm, preferably 1 mm; the height of the cylindrical body (9) is 1.5-5.0 mm, preferably 2 mm, whereas the height of the piercing end (8) is 0.2-5.0 mm, preferably 1 mm.
6. A tool according to any of claims 1-5 characterized in that the piercing end (8) is of hemispherical shape.
7. A procedure for the clamping of overlapping plates with any tool complying with any of claims 1-6 wherein the plates to be clamped together are fitted together, the overlapping part is inserted between the tool jaws (4, 5), the piercing end (8) of the prick (7) is focused on a single clamping point, and by squeezing the clamp shanks (2, 3) of the tools the plates are punched through characterized in that after the removal of the punched plates, the tool or the plates are turned upside down, and the piercing end (8) of the prick (7) is inserted into the opening produced at the clamping point from the other side, and then by closing the tool again the plates are permanently clamped together in their own material.
PCT/HU2007/000083 2006-09-13 2007-09-13 Tool and procedure for joining of overlapping plates by piercing WO2008032130A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07804525A EP2061611A1 (en) 2006-09-13 2007-09-13 Tool and procedure for joining of overlapping plates by piercing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU0600721A HU227738B1 (en) 2006-09-13 2006-09-13 Method and tool for fastening overlapping plates
HUP0600721 2006-09-13

Publications (1)

Publication Number Publication Date
WO2008032130A1 true WO2008032130A1 (en) 2008-03-20

Family

ID=89987025

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/HU2007/000083 WO2008032130A1 (en) 2006-09-13 2007-09-13 Tool and procedure for joining of overlapping plates by piercing

Country Status (3)

Country Link
EP (1) EP2061611A1 (en)
HU (1) HU227738B1 (en)
WO (1) WO2008032130A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009021052A1 (en) * 2009-05-07 2010-11-18 Siemens Aktiengesellschaft Method for joining two metal sheets in laminated core fixed at insertion frame of electrical switching arrangement, involves pressing tools against inner surface of spray and driving tools so that rear section is formed in one of holes
FR3122844A1 (en) * 2021-05-12 2022-11-18 Renault S.A.S Automotive vehicle battery tray gripping tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620638A1 (en) * 1987-09-22 1989-03-24 Duchene Rene Lock-seaming (mechanical fastening) of thick metal sheets without fasteners (supplies)
DE4424493A1 (en) * 1993-10-13 1995-04-20 Erich R Vogl Pliers-like tool for connecting sheet-metal parts in a positive-locking manner
DE4422103A1 (en) * 1994-06-24 1996-01-11 Hazet Werk Zerver Hermann Hand=operated hole punch for sheet metal
US5617619A (en) * 1994-08-11 1997-04-08 Knudson; Gary A. Rivet fastening apparatus and method
WO2001094797A1 (en) * 2000-06-08 2001-12-13 Adval Tech Holding Ag Tubular rivet connection between two metal sheets and method for the production thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2620638A1 (en) * 1987-09-22 1989-03-24 Duchene Rene Lock-seaming (mechanical fastening) of thick metal sheets without fasteners (supplies)
DE4424493A1 (en) * 1993-10-13 1995-04-20 Erich R Vogl Pliers-like tool for connecting sheet-metal parts in a positive-locking manner
DE4422103A1 (en) * 1994-06-24 1996-01-11 Hazet Werk Zerver Hermann Hand=operated hole punch for sheet metal
US5617619A (en) * 1994-08-11 1997-04-08 Knudson; Gary A. Rivet fastening apparatus and method
WO2001094797A1 (en) * 2000-06-08 2001-12-13 Adval Tech Holding Ag Tubular rivet connection between two metal sheets and method for the production thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009021052A1 (en) * 2009-05-07 2010-11-18 Siemens Aktiengesellschaft Method for joining two metal sheets in laminated core fixed at insertion frame of electrical switching arrangement, involves pressing tools against inner surface of spray and driving tools so that rear section is formed in one of holes
FR3122844A1 (en) * 2021-05-12 2022-11-18 Renault S.A.S Automotive vehicle battery tray gripping tool

Also Published As

Publication number Publication date
HU0600721D0 (en) 2006-11-28
EP2061611A1 (en) 2009-05-27
HUP0600721A2 (en) 2008-05-28
HU227738B1 (en) 2012-02-28

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