EP0523134A1 - Clinching tool for sheet metal joining. - Google Patents
Clinching tool for sheet metal joining.Info
- Publication number
- EP0523134A1 EP0523134A1 EP91907385A EP91907385A EP0523134A1 EP 0523134 A1 EP0523134 A1 EP 0523134A1 EP 91907385 A EP91907385 A EP 91907385A EP 91907385 A EP91907385 A EP 91907385A EP 0523134 A1 EP0523134 A1 EP 0523134A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- clinching
- clinching apparatus
- void
- guide block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
Definitions
- the present invention relates to fastening tools and in particular to a clinching apparatus for joining overlapping portions of sheet material without the need for independent fastening elements such as rivets or nails.
- clinching tools usually comprise a punch operable in conjunction with a complementary die to plasticly deform the overlapping portions of metal and form a clinch which fastens the sheets together.
- One such device includes a multi-segmented die bounded by a flexible restraining band permitting the die to resiliently open during the clinching operation. In the open configuration/ however, particulate debris is permitted to migrate into the clearances between adjacent die segments. Repeated use causes the die to become clogged which prevents efficient operation of the tool.
- Known clinching tools also suffer from an additional problem in that the wall thickness of the sheet material in the vicinity of the neck of the clinch tends to be significantly reduced because of the way in which the metal is extruded into the die.
- the wall thickness in the region of the clinch can be reduced by in excess of 80% of the nominal gauge thickness of the metal, which significantly reduces the maximum shear strength of the clinch.
- the joint so formed is highly stressed in the vicinity of the clinch and therefore more susceptible to corrosion which directly affects the longevity of the joint. In many applications, for example in the building industry, these problems have prevented the widespread commercial acceptance of clinching as a viable means of assembly and construction in sheet metal because of the resultant difficulty encountered in meeting stringent safety requirements.
- the invention provides a clinching apparatus for joining overlapping portions of sheet material, said apparatus including a die comprising a plurality of discrete forming elements, guide means to force said forming elements into close abutment in a closed configuration in response to movement thereof in a first direction to define a void bounded by an effectively continuous peripheral surface and to permit said forming elements to move apart into an open configuration in response to movement thereof in a second opposite direction, and a punch operable in conjunction with said die to force said sheet material into said void to form a clinch fastening said overlapping portions together, said clinch being released from said die by movement of said forming elements in said second direction toward said open configuration.
- the die comprises at least two complementary collets and the guide means includes a guide block disposed within a body and defining an outwardly diverging generally frusto-conical socket.
- the collets together preferably define a complementary frusto-conical outer surface slidingly engageable with the conical socket of the guide block such that movement of the collets into the socket in the first direction causes the collets to be forced tightly together into the closed configuration. Conversely, movement of the collets out of the socket in the second opposite direction permits the collets to move apart into the open configuration to release the clinch from the die.
- the apparatus preferably also includes a centrally disposed floating die member mounted for limited independent axial sliding movement within the body and between the collets to define a lower boundary of the void.
- the degree of axial sliding movement is preferably controlled by resilient compression means to provide a passive restoring force tending to urge the floating die toward the void once the clinch has been formed .
- the resilient compression means preferably comprises a first deformable element of predetermined resiliency disposed effectively intermediate the body and the floating die.
- a second resilient compression element is disposed effectively intermediate the guide block and the floating die to provide a degree of independent relative movement between the die, the guide block, the floating die member and the body, thereby to accommodate surface irregularities in the sheet material and provide a degree of gauge tolerance.
- the resilient compression means may comprise a compressible packing element formed from a suitable material such as lurethane, a compressible fluid, or a spring, for example.
- the resilient compression means may be supplemented or replaced by positive drive means such as an hydraulic cylinder acting in conjunction with a tapered wedge member, whereby the floating die is actively driven toward the void during the latter part of the clinching cycle thereby to "flare” the clinch and enhance mechanical interengagement of the overlapping sheets.
- positive drive means such as an hydraulic cylinder acting in conjunction with a tapered wedge member
- the apparatus preferably also includes independently operable clamping means to clamp the sheet material intermediate the punch and the die.
- the clamping means preferably includes a press having a clamping member defining a generally annular clamping surface coaxial with the punch and cooperable with a corresponding opposed upper surface of the die.
- selective actuation of the clamping press forces the clamping member toward the die, thereby clamping the sheet material between the annular clamping surface and the corresponding upper surface of the die. This action simultaneously drives the collets into the complementary frusto-conical socket formed in the guide block to close the die prior to independent actuation of the punch to form the clinch.
- the clamping member is formed with an outwardly protruding convex clamping surface configured to force the sheet material into the void during the clinching cycle.
- the clamping surface is partially spherical and incorporates an outwardly protruding annular shoulder surrounding the punch.
- the apparatus preferably also includes restraining means to limit the maximum axial excursion of the collets in the second direction relative to the guide block.
- the restraining means in one embodiment comprises a plurality of locating lugs extending inwardly from the guide block into the conical socket and engaging corresponding oversized apertures formed in the respective collets to provide a limited degree of free play in the first and second directions corresponding to the radial clearance defined between the locating lugs and the respective apertures.
- the retaining means comprises a circlip surrounding the remote end of the die, such that the maximum axial excursion of the die in the second direction corresponds to a point at which the circlip abuts a lower surface of the guide block, which is conveniently retained with the body within an interference fit.
- the collets define a plurality of lobes or protuberances in the void such that the resultant clinch prevents relative rotation of the constituent portions of sheet material.
- a range of non-circular die shapes such as polygonal or elliptical can be used to produce non-rotational joints.
- the invention provides an independent multi-cylinder actuating device for a clinching apparatus substantially as described above, said actuating device including a first force exerting member reciprocably moveable by a first fluid cylinder, and a second force exerting member reciprocably moveable independently of the first member by a second fluid cylinder, an outer surface of the first member forming an inner surface of the second cylinder such that an operating volume of the second cylinder is defined partly by the first member.
- the actuating device acts in cooperation with the clinching apparatus whereby the first member actuates the punch and the second member independently actuates the clamping press.
- the first and second cylinders are preferably hydraulic. However, it will be appreciated that pneumatic cylinders, for example, can also be used.
- the invention provides a clinching assembly comprising a clinching apparatus substantially as described, and an actuating device substantially as described, wherein the first force exerting member actuates the punch and the second force exerting member independently actuates the die.
- the actuating device and clinching apparatus are preferably maintained in relative coaxial alignment by a generally C-shaped support frame.
- a pair of clinching apparatus may be supported in spaced apart relationship by a generally E-shaped support frame to enable parallel flanges of a beam to be clinched simultaneously.
- Figure 1 is a cut-away sectional view of a clinching apparatus according to a first embodiment of the invention with the die in the open configuration;
- Figure 2 shows the clinching apparatus of figure 1 in operation with the die in the closed configuration;
- Figure 3 is a sectional view showing a clinch formed with the tool of figures 1 and 2;
- Figure 4 shows a second embodiment of the clinching apparatus according to the invention
- Figure 5 is a cross-sectional view showing an alternative embodiment of the clamping member of figures 1 and 2, incorporating a convex clamping surface and outwardly protruding annular shoulder;
- Figure 6 is a perspective view showing an alternative embodiment of the die, incorporating a plurality of lobes to form non-rotational joints;
- Figure 7 shows another embodiment of the clinching apparatus wherein the die is retained for limited axial excursion within the guide block by a circlip;
- Figure 8 is an exploded view of the punch and die assembly of the embodiment of figure 7;
- Figure 9 is a diagrammatic cross-sectional view showing a further embodiment wherein the resilient compression means incorporates a compression spring and wedge assembly operable on the floating die;
- Figure 10 is a cross sectional view similar to figure 9 but incorporating active hydraulic-mechanical drive means
- Figure 11 shows an alternative embodiment of the active hydraulic-mechanical drive means of figure 10
- Figure 12 is a cut-away sectional view showing a multi-cylinder actuating device according to a second aspect of the invention
- Figure 13 is a sectional side elevation showing a clinching assembly according to a third aspect of the invention.
- a clinching apparatus 1 for joining overlapping portions of sheet material 2 includes a die 3 comprising a plurality of discrete mutually opposed forming elements in the form of complementary collets 5.
- the apparatus further includes guide means in the form of guide block 10 disposed within body 11 and defining an outwardly diverging frusto-conical socket 12.
- the collets 5 together define a complementary frusto-conical outer surface 15 nestably engageable with conical socket 12 of the guide block 10. In this way, movement of the die into the socket forces the collets into close abutment in a closed configuration (as shown in figure 2) to define a void 16 bounded by an effectively continuous peripheral surface 17.
- the sides of the socket 12 are preferably inclined at an angle of around 10° to the vertical.
- this angle can be varied to suit particular applications and material types and thicknesses. For example, with higher loads it is envisaged that an angle of around 15° would be used.
- a selectively operable punch 20 having a domed head acts in conjunction with die 3 to force the sheet metal 2 into the void 16 to form a clinch 21 securely fastening the overlapping sheets together.
- the clinch 21 is released from the die by movement of the collets outwardly from the guide block toward the open configuration.
- a floating die member 22 coaxial with punch 20 is mounted for limited independent axial sliding movement within body 11 and between collets 5 to define a lower boundary 23 of the void 16.
- the degree of axial sliding movement is passively controlled by a first deformable compression element 25 of controlled resiliency disposed intermediate the body 11 and the floating die 22.
- the resilient compression element 25 preferably has a definite end point beyond which substantially no further compressive deformation is possible, and provides a restoring force tending to urge the floating die upwardly toward the void.
- a second resilient annular compression element 26 is disposed effectively between the guide block 10 and a stepped shoulder of the body 11.
- Resilient compression elements 25 and 26 together provide a limited degree of independent relative movement between die 3, guide block 10, floating die 22, and body 11, thereby to accommodate surface irregularities in the sheet material and provide a degree of gauge tolerance for the tool.
- an additional compression element 27 may also be interposed effectively between the floating die and the guide block if required.
- the resilient elements are preferably formed from a suitable material such as Lurethane which can be appropriately trimmed or “tuned” to provide the required degree of resilient deformation.
- suitable material such as Lurethane which can be appropriately trimmed or “tuned” to provide the required degree of resilient deformation.
- packing elements or other means such as an adjustably damped viscous hydraulic circuit, or a compressible fluid, could also be used.
- the floating die is urged upwardly toward the void by a spring biased conical wedge member acting against complementary split collets abutting the lower surface of the floating die, as described in more detail below.
- the resilient compression means may also be supplemented or replaced by positive drive means such as an hydraulic cylinder acting in conjunction with a tapered wedge member as will be described below in relation to figure 10 whereby the floating die may be actively driven upwardly into the void during the latter part of the clinching cycle to increase the "mushrooming" effect by flaring the neck of the clinch as the sheet material is driven into the void by the punch.
- positive drive means also assists in automatically releasing the clinch from the die.
- the apparatus further includes independently operable clamping means 30 to firmly clamp the sheet material between the punch and the die during the clinching operation.
- the clamping means includes a press having reciprocable clamping member 32 defining a generally annular clamping surface 33 coaxial with the punch 20 and cooperable with a corresponding opposed upper surface 35 of the die 3. Selective actuation of the clamping press forces clamping member 32 downwardly toward die thereby securely clamping the sheet material between annular clamping surface 33 and the corresponding upper surface 35 of the die. This clamping action simultaneously drives the collets downwardly into the socket 12 formed in the guide block to tightly close the die prior to independent actuation of the punch to form the clinch.
- the clamping member is preferably formed with an outwardly protruding convex clamping surface incorporating a protruding annular shoulder 37 to urge material into the void during the clamping operation and thereby enhance the strength of the resultant clinch.
- the die also includes restraining means to limit the maximum axial excursion of the collets with respect to the guide block.
- the restraining means in the embodiments of figures 1 and 4 comprises a pair of mutually opposed locating lugs 40 extending radially inwardly from the guide block into the conical socket 12 and engaging corresponding over-sized apertures 41 formed in the respective collets. This provides a limited degree of free play between the collets and the guide block, corresponding to the radial clearance defined between locating lugs 40 and respective apertures 41.
- the extreme positions of the collets relative to the guide block correspond respectively to the open and closed configurations of the die.
- the retaining means comprises a circlip 42 extending around a lower cylindrical neck portion 43 of the die.
- the maximum axial excursion of the die in the second direction corresponds to the point at which the circlip abuts the lower surface of the guide block, which is retained within the body with an interference fit.
- the circlip also serves to keep the die together and operating efficiently, particularly in embodiments where the die comprises three or more forming elements or collets, such as that as shown in figure 6.
- the clinching apparatus is preferably operated by an independent multi-cylinder actuating device 45 including a first piston 46 reciprocably moveable by a first hydraulic cylinder 47 and a second piston 48 reciprocably moveable independently of the first piston 46 by a second hydraulic cylinder 49.
- the outer surface 50 of the first piston 46 forms a common inner surface of the second cylinder 49 such that the toroidal operating volume 51 of the second cylinder 49 is defined partly by the first piston.
- the actuating device 45 acts in cooperation with the clinching apparatus whereby the first piston 46 operates the punch 20 and the second piston 48 independently operates the clamping member 32.
- the independence of the punch cylinder 47 in relation to the clamping cylinder 49 permits a varying depth of clinch in the overlapping sheets related to sheet thickness and material type, which again increases the guage tolerance of the tool.
- the actuating device and clinching tool are held in relative coaxial alignment by a generally C-shaped steel support frame 52 as shown in figure 10, whereby the integrated clinching assembly can be conveniently transported and used by a single operator.
- the overlapping portions of sheet material are first inserted between the punch and the die as best seen in figure 1.
- the clamping press is then actuated to clamp the sheet material between clamping surface 33 of the press and complementary surface 35 of the die, and simultaneously wedge the collets tightly into the guide block to close the die.
- the clamping action also forces the overlapping sheets together into close abutment prior to actuation of the punch to ensure that an effective clinch is formed even in the event of local irregularities or surface defects in the sheet metal.
- the punch is then actuated by the first piston 46 under the action of hydraulic cylinder 47 to force the sheet material downwardly into void 16 and outwardly into forming engagement with peripheral surface 17 of the die thereby to form the clinch 21.
- the internal void angle ⁇ (figure 8) defined by peripheral surface 17 is preferably in the range of around 5° to 50° to maximise the "mushrooming" effect, particularly in softer materials.
- a three or four element die such as that shown in figure 6 is preferred in applications requiring higher internal void angles to facilitate release once the clinch has been formed. Additionally, the clamping press prevents undesirable local distortion of the metal immediately adjacent the joint during the formation of the clinch and thereby further contributes to the resultant strength of the joint.
- the forming action of the punch simultaneously drives floating die 22 downwardly by a predetermined incremental amount corresponding to the degree of resilient deformation provided by controlled compression element 25.
- the guide block is provided with a limited degree of relative movement with respect to the body by means of the second resilient compression elements 26 or 27 to accommodate slight variations in gauge thickness and compliance of the sheet metal.
- the punch 20 is withdrawn whereupon the resilient compression element 25 provides a restoring force tending to urge the floating die 22 upwardly toward the void and into abutting engagement with the lower face of the clinch. This action tends to flatten the clinch and simultaneously flare the neck outwardly to further increase the degree of interlocking engagement between the overlapping sheets.
- the clamping press is subsequently withdrawn whereby the unrestrained restoring force provided by the resilient compression elements tends to urge the collets upwardly, away from the guide block and into the open configuration to automatically release the clinch from the die.
- the maximum upward excursion of the collets is limited by retaining lugs 40 acting in conjunction with respective apertures 41 which together define the open configuration for the die.
- this arrangement provides the dual advantages of increased interlocking engagement provided by the tapered configuration of the void lacking in known fixed die devices, together with a simple automatic release mechanism to increase the throughput in high rate production applications. This obviates the need for an independent releasing step which in some prior art devices can require a stripping force of the same order of magnitude as the shear strength of the joint.
- the position of the floating die, the guide block, and the collets can be conveniently adjusted relative to the body by means of threaded adjustment plug 55 to accommodate sheet metal of varying thickness.
- the end point of the compression provided by the resilient packing elements can be conveniently adjusted by the incorporation of tuning slots or varying the available volume into which the resilient elements can expand.
- the floating die is urged upwardly toward the void by a transverse spring biased conical wedge member 62 engaging complementary split collets 63 which abuttingly engage a lower surface 64 of the floating die.
- Compression spring 65 resiliently deforms to accommodate a degree of axial displacement of the floating die during the clinching cycle, and subsequently applies a corresponding restoring force to flare the clinch within the void.
- the position of the conical wedge member can be conveniently tuned using adjustment nuts 66.
- the passive resilient compression elements may be supplemented or replaced by positive drive means 70 such as an hydraulic cylinder 71 operable in conjunction with the tapered conical wedge member 62 and a suitable control system (not shown) whereby the floating die is actively driven upwardly into the void at the appropriate stage during the clinching cycle.
- positive drive means 70 such as an hydraulic cylinder 71 operable in conjunction with the tapered conical wedge member 62 and a suitable control system (not shown) whereby the floating die is actively driven upwardly into the void at the appropriate stage during the clinching cycle.
- this action tends to flatten the clinch and simultaneously flare the neck outwardly into the void to further increase the degree of interlocking engagement between overlapping sheets. It can also serve as an automatic release mechanism.
- the conical wedge member 62 and split collets 63 are disposed symmetrically within the body so that the apparatus can be readily adapted to simultaneously operate a second opposed die assembly (not shown) for simultaneously clinching spaced apart beam flanges, for example. Again in this embodiment, the position and limits of excursion can be adjusted by nuts 66 .
- the collets may be configured to define a plurality of lobes 80 in the die which effectively prevent relative rotation of the sheet material around the clinch. It will be appreciated, however, that any suitable non-circular die shapes, for example polygonal or elliptical, can be used to achieve this result.
- the unique configuration of the collets, guide block, floating die and body are such that the wall thickness in the vicinity of neck of the clinch can approach 90% or more of the nominal gauge thickness of the sheet metal. This significantly increases the shear strength of the clinch relative to known devices and also provides a corresponding increase in corrosion tolerance. It has been found that the shear strength of a clinch formed by the invention can approach the maximum material strength of the constituent metal which represents a significant improvement over the prior art.
- Table "A” below shows preliminary test data for a clinching tool embodying the present invention and results obtained from a comparable prior art device. Controlled tests were conducted on samples prepared from elongate flat strips of sheet steel effectively 0.750 inches wide in a variety of thicknesses and joint configurations as outlined in the table. Overlapping strips were clinched to form samples of 100 mm effective overall length which were then tested to destruction in a tensile testing machine to determine the effective shear strengths of the joints,
- Shear strength of joint exceeded ultimate tensile strength of material in at least one case. It will be seen from the above that the strength of the clinched joint closely approaches the maximum strength of the sheet material. Indeed in some cases, the test samples failed in tension away from the joint leaving the clinch intact, indicating a joint shear strength exceeding the ultimate tensile strength of the constituent sheet material.
- the invention has particular advantage in its application to the housing, construction and building service industries in which steel frame fabrication is beginning to take a prominent place over more conventional construction techniques.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
- Dovetailed Work, And Nailing Machines And Stapling Machines For Wood (AREA)
Abstract
Appareil de rivetage (1) utilisé pour assembler des parties de tôle (2) se chevauchant. L'appareil comprend une matrice (3) comportant une pluralité d'éléments de formage séparés (5). Des moyens de guidage forcent les éléments de formage (5) à venir en aboutement étroit dans une configuration fermée en réponse à un mouvement de ces derniers dans un premier sens afin de définir un vide (16) limité par une surface périphérique continue (17), et afin de permettre aux éléments de formage (5) de s'écarter dans une configuration ouverte en réponse à leur mouvement dans un second sens opposé. L'appareil comprend également un poinçon (20) fonctionnant conjointement avec la matrice (3) pour forcer la tôle (2) dans la cavité (16) afin de former un rivet (21) fixant les unes contre les autres les parties se chevauchant. Le rivet (21) est libéré de la matrice (3) par le mouvement des éléments de formage (5) dans le second sens, vers la configuration ouverte.Riveting apparatus (1) used to assemble overlapping sheet metal parts (2). The apparatus includes a die (3) having a plurality of separate forming elements (5). Guide means force the forming elements (5) to come into close abutment in a closed configuration in response to a movement of the latter in a first direction in order to define a vacuum (16) limited by a continuous peripheral surface (17) , and to allow the forming elements (5) to move apart in an open configuration in response to their movement in a second opposite direction. The apparatus also includes a punch (20) operating in conjunction with the die (3) to force the sheet (2) into the cavity (16) to form a rivet (21) fixing the overlapping parts against each other. The rivet (21) is released from the matrix (3) by the movement of the forming elements (5) in the second direction, towards the open configuration.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPJ943490 | 1990-04-03 | ||
AU9434/90 | 1990-04-03 | ||
PCT/AU1991/000120 WO1991015316A1 (en) | 1990-04-03 | 1991-03-28 | Clinching tool for sheet metal joining |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0523134A1 true EP0523134A1 (en) | 1993-01-20 |
EP0523134A4 EP0523134A4 (en) | 1993-09-15 |
EP0523134B1 EP0523134B1 (en) | 1995-09-06 |
Family
ID=3774584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91907385A Expired - Lifetime EP0523134B1 (en) | 1990-04-03 | 1991-03-28 | Clinching tool for sheet metal joining |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0523134B1 (en) |
JP (1) | JPH05506617A (en) |
DE (1) | DE69112824D1 (en) |
NZ (1) | NZ237649A (en) |
WO (1) | WO1991015316A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112091085A (en) * | 2020-08-28 | 2020-12-18 | 博众精工科技股份有限公司 | Riveting device |
EP3769413A4 (en) * | 2018-03-23 | 2021-12-22 | NEXTracker, Inc. | Structural beam for solar tracker |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5435049A (en) * | 1980-09-08 | 1995-07-25 | Btm Corporation | Apparatus for joining sheet material |
DE4139347A1 (en) * | 1991-11-29 | 1993-06-03 | Sta Co Mettallerzeugnisse Gmbh | PRESSURE JOINT DEVICE |
US5230136A (en) * | 1992-05-04 | 1993-07-27 | Savair Inc. | Punch and die set for sheet metal clinching |
FR2693930B1 (en) * | 1992-07-24 | 1994-09-23 | Homax Ag | Improvements to tools for making sheet metal assembly points. |
GB9226517D0 (en) * | 1992-12-19 | 1993-02-10 | Henrob Ltd | Improvements in or relating to sefl-piercing riveting |
EP0664170B1 (en) * | 1994-01-24 | 1998-09-09 | Homax Ag | Improvements on tools for making point connections of plates |
DE4428546A1 (en) * | 1994-08-12 | 1996-02-15 | Gerhard Pirchl | Press joining tool |
US5737819A (en) * | 1995-05-10 | 1998-04-14 | Btm Corporation | Fastening apparatus |
US9015920B2 (en) | 1997-07-21 | 2015-04-28 | Newfrey Llc | Riveting system and process for forming a riveted joint |
US6276050B1 (en) | 1998-07-20 | 2001-08-21 | Emhart Inc. | Riveting system and process for forming a riveted joint |
EP1115518B1 (en) * | 1998-09-25 | 2003-03-19 | Technische Universität Dresden | Method and device for connecting overlapping flat parts |
EP1108480A3 (en) * | 1999-12-09 | 2003-02-05 | Hahn, Ortwin, Prof. Dr.-Ing. | Device and method for effecting a mechanical |
DE102006015458B4 (en) * | 2006-03-31 | 2019-02-28 | Eckold Gmbh & Co. Kg | Method and tool device for forming |
DE102010010185A1 (en) | 2010-03-03 | 2011-09-08 | Airbus Operations Gmbh | Component connecting arrangement, particularly for large-area flat components, of aircraft, has plate part with attachment part, where plate part and attachment part are connected with each other in boundary areas |
US9027220B2 (en) | 2012-08-07 | 2015-05-12 | Newfrey Llc | Rivet setting machine |
CN103599998B (en) * | 2013-10-29 | 2015-09-09 | 格林精密部件(苏州)有限公司 | Motor turning power shaft assembly press-loading device |
US10328481B2 (en) | 2014-03-18 | 2019-06-25 | Btm Company Llc | Clinching punch and apparatus |
DE102016120681B4 (en) * | 2016-10-28 | 2022-12-08 | Tox Pressotechnik Gmbh & Co. Kg | Device for setting a joining element or for clinching |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56114536A (en) * | 1980-02-13 | 1981-09-09 | Toshiba Corp | Joining device of sheet material |
US4459735A (en) * | 1980-09-08 | 1984-07-17 | Btm Corporation | Joining sheet metal |
US4757609A (en) * | 1980-09-08 | 1988-07-19 | Btm Corporation | Apparatus for joining sheet material |
-
1991
- 1991-03-28 WO PCT/AU1991/000120 patent/WO1991015316A1/en active IP Right Grant
- 1991-03-28 EP EP91907385A patent/EP0523134B1/en not_active Expired - Lifetime
- 1991-03-28 NZ NZ23764991A patent/NZ237649A/en unknown
- 1991-03-28 DE DE69112824T patent/DE69112824D1/en not_active Expired - Lifetime
- 1991-03-28 JP JP91506689A patent/JPH05506617A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9115316A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3769413A4 (en) * | 2018-03-23 | 2021-12-22 | NEXTracker, Inc. | Structural beam for solar tracker |
CN112091085A (en) * | 2020-08-28 | 2020-12-18 | 博众精工科技股份有限公司 | Riveting device |
Also Published As
Publication number | Publication date |
---|---|
EP0523134B1 (en) | 1995-09-06 |
JPH05506617A (en) | 1993-09-30 |
EP0523134A4 (en) | 1993-09-15 |
DE69112824D1 (en) | 1995-10-12 |
NZ237649A (en) | 1993-10-26 |
WO1991015316A1 (en) | 1991-10-17 |
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