DE102009044888B4 - Method and tool for mechanically joining at least one lower and one upper mold part by means of a punch rivet - Google Patents
Method and tool for mechanically joining at least one lower and one upper mold part by means of a punch rivet Download PDFInfo
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- DE102009044888B4 DE102009044888B4 DE102009044888A DE102009044888A DE102009044888B4 DE 102009044888 B4 DE102009044888 B4 DE 102009044888B4 DE 102009044888 A DE102009044888 A DE 102009044888A DE 102009044888 A DE102009044888 A DE 102009044888A DE 102009044888 B4 DE102009044888 B4 DE 102009044888B4
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- 238000005304 joining Methods 0.000 title claims abstract description 15
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- 238000000465 moulding Methods 0.000 claims description 35
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/025—Setting self-piercing rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups
- B21J15/285—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups for controlling the rivet upset cycle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
- B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
- B29C65/601—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
- B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/824—Actuating mechanisms
- B29C66/8242—Pneumatic or hydraulic drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
- B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Insertion Pins And Rivets (AREA)
- Connection Of Plates (AREA)
Abstract
Verfahren zum mechanischen Fügen von mindestens einem unteren und einem oberen Formteil (8, 9) mittels eines Stanzniets mit einem flachen Nietkopf (2) und einem Schaft, der mindestens eine Ringnut (5) aufweist, zwischen einem Pressstempel (6) und einer Matrize (7), dadurch gekennzeichnet, dass
– die Formteile (8, 9) auf der Matrize (7) und unter dem angehobenen Presstempel (6) positioniert werden,
– ein Stanzniet (1) mit seinem flachen Nietkopf (2) am unteren Ende des Pressstempels (6) mit einer Hülse (12) gehalten wird,
– der Stanzniet mit Hilfe des niederfahrenden Presstempels (6) durch die Formteile (8, 9) gestanzt wird, so dass der Nietkopf (2) mit seiner Unterseite auf das obere Formteil (8) gepresst wird,
– das untere Formteil (9) mittels einer Erhebung (11) auf der Matrize (7) so verformt wird, dass Material des unteren Formteils (9) in die Ringnut (5) gepresst wird,
– die Kraft zum Verformen des...Method for mechanically joining at least one lower and one upper mold part (8, 9) by means of a punch rivet with a flat rivet head (2) and a shank which has at least one annular groove (5) between a press ram (6) and a die ( 7), characterized in that
- the mold parts (8, 9) are positioned on the die (7) and under the raised ram (6),
A rivet (1) with its flat rivet head (2) is held at the lower end of the ram (6) with a sleeve (12),
The stamped rivet is punched through the mold parts (8, 9) by means of the depressing punch (6), so that the rivet head (2) is pressed with its underside onto the upper mold part (8),
- The lower mold part (9) by means of a survey (11) on the die (7) is deformed so that material of the lower mold part (9) is pressed into the annular groove (5),
- the power to deform the ...
Description
Die Erfindung beschreibt ein Verfahren und Werkzeug zum mechanischen Fügen von mindestens einem unteren und einem oberen Formteil mittels eines Stanzniets mit einem Nietkopf und einem Schaft, der mindestens eine Ringnut aufweist, zwischen einem Pressstempel und einer Matrize.The invention describes a method and tool for mechanically joining at least one lower and one upper molded part by means of a punch rivet with a rivet head and a shank, which has at least one annular groove, between a press ram and a die.
Stanznieten werden zum Fügen von zwei oder mehr Formteilen, wie Blechen oder Profilen, verwendet. Der Stanzniet wird mit Hilfe eines Pressstempels ohne Vorlochen durch die zu verbindenden Formteile gestanzt, wobei der Stanzniet gleichzeitig als Schneidstempel dient. Ein solcher Stanzniet ist beispielsweise in der Gebrauchsmusterschrift
Bei dem Stanznieten werden die zu fügenden Formteile üblicherweise von einem Niederhalter gegen eine untere Matrize gedrückt. Der Stanzniet stanzt den Butzen durch die Matrize aus dem zu verbindenden Material.In the punch riveting, the moldings to be joined are usually pressed by a hold-down device against a lower die. The punch rivet punches the slug through the die out of the material to be joined.
Durch den Pressdruck des Niederhalters wird das auf der Matrize aufliegende Formteil so verformt, dass Material in die Schaftnut eindringt und den Niet festsetzt. Auf die Weise wird eine dauerhafte Verbindung hergestellt.Due to the pressing pressure of the blank holder, the molded part resting on the die is deformed such that material penetrates into the shaft groove and fixes the rivet. In this way, a permanent connection is made.
Ein Stanz-Prägeniet mit Senkkopf und Schaftnut ist auch in der Gebrauchsmusterschrift
In der Patentschrift
Bei dem Stanznieten werden die Formteile oft noch vorher bearbeitet. So beschreibt die Patentanmeldung
Üblicherweise werden die Formteile aber an der Fügestelle mit einem Klebstoff versehen, der später nach dem Fügen aushärtet. Eine solche Klebeverbindung erhöht wesentlich die Festigkeit der Verbindung.Usually, however, the moldings are provided at the joint with an adhesive that hardens later after joining. Such an adhesive bond substantially increases the strength of the connection.
Durch das Pressen der Formteile mit dem Niederhalter wird der Klebstoff zwischen den Formteilen um den Niederhalter herum verdrängt. Das Verdrängen wird noch weiter verstärkt, wenn der Pressdruck durch den Niederhalter weiter erhöht wird, um die Verformung des unteren Formteils durch die Matrize und das Eindringen des Materials in die Ringnut zu erreichen. Wenn nun der Niederhalter zurückgefahren wird, federn die Formteile um die Fügestelle herum auf. Es dringt Luft in die Klebeschicht und sie verbindet die Formteile nicht mehr vollflächig. Damit wird die verstärkende Wirkung der Klebverbindung reduziert.By pressing the moldings with the hold-down, the adhesive is displaced between the moldings around the hold-down. The displacement is further enhanced when the pressing pressure is further increased by the hold-down to achieve the deformation of the lower mold part by the die and the penetration of the material into the annular groove. Now, when the hold-down is moved back, the molded parts spring around the joint around. It penetrates air into the adhesive layer and it no longer connects the molded parts completely. This reduces the reinforcing effect of the adhesive bond.
Es ist die Aufgabe der Erfindung ein Verfahren und ein Werkzeug zum Stanznieten anzugeben, bei dem das Auffedern der Formteile nach dem Vernieten vermieden wird.It is the object of the invention to provide a method and a tool for punch riveting, in which the rebounding of the molded parts is avoided after riveting.
Diese Aufgabe wird mit dem Verfahren nach Anspruch 1 und dem Werkzeug nach Anspruch 9 gelöst. Vorteilhafte Ausgestaltungen des Verfahrens und des Werkzeugs sind in den abhängigen Ansprüchen beschrieben.This object is achieved by the method according to
Das Verfahren zum mechanischen Fügen von mindestens einem unteren und einem oberen Formteil mittels eines Stanzniets zwischen einem Pressstempel und einer Matrize zeichnet sich dadurch aus, dass die Formteile dann auf der Matrize und unter dem angehobenen Presstempel positioniert werden, ein Stanzniet mit seinem Nietkopf in einem Klemmring am unteren Ende des Pressstempels gehalten wird und der Stanzniet mit Hilfe des niederfahrenden Presstempels so durch die Formteile gestanzt wird, dass der Kopf des Stanzniets auf das obere Formteil gepresst wird, und das untere Formteil mittels einer Erhebung auf der Matrize so verformt wird, dass Material des Formteils in die Ringnut im Schaft des Stanznietes gepresst wird. Die notwendige Fügekraft wird dabei über den Pressstempel und den Nietkopf aufgebracht.The method for mechanically joining at least one lower and one upper molded part by means of a punch rivet between a press ram and a die is characterized in that the molded parts are then positioned on the die and under the raised ram, a rivet with its rivet head in a clamping ring is held at the lower end of the press ram and the punch rivet is punched by means of the depressing press ram through the moldings so that the head of the punch rivet is pressed onto the upper mold part, and the lower mold part is deformed by means of a survey on the die so that material of the molded part is pressed into the annular groove in the shank of the punch rivet. The necessary joining force is applied via the press ram and the rivet head.
Der Pressstempel drückt nicht direkt auf die beiden Formteile, sondern der Nietkopf des Stanznietes wird durch den hohen Pressdruck fest auf die Formteile gepresst und der Nietkopf verbleibt auch in dieser Presslage und die Formteile federn nicht wieder auf, wie es ansonsten bei einem Pressdruck über den Niederhalter der Fall wäre, wenn dieser wieder hochfährt. Das erfindungsgemäße Verfahren zeichnet sich also auch dadurch aus, dass neben dem Pressstempel kein Niederhalter erforderlich ist.The ram does not press directly on the two moldings, but the rivet head of the punch rivet is pressed firmly by the high pressure on the moldings and the rivet head remains in this pressing position and the molded parts do not spring back on, as it otherwise with a pressing pressure on the hold-down the case would be when it starts up again. The method according to the invention is therefore also distinguished by the fact that no hold-down device is required in addition to the press ram.
Die Formteile in diesem Verfahren sind typischerweise Metallbleche. Es können aber auch Gussteile, Profile oder Teile aus anderen Materialien wie Verbundwerkstoffen oder Kunststoffteile auf diese Weise gefügt werden. Das Verfahren kommt insbesondere bei Materialien die nicht oder nur aufwendig miteinander verschweißt werden können, zum Einsatz.The moldings in this process are typically metal sheets. However, it is also possible to join castings, profiles or parts made of other materials such as composite materials or plastic parts in this way. The method is used in particular for materials that can not be welded together or only with difficulty.
Dabei ist der Nietkopf als Flachkopf mit einem breiten Flansch ausgeführt. Durch den breiten Flansch wird die flächige Presswirkung auf die Formteile vergrößert.The rivet head is designed as a flat head with a wide flange. Through the wide Flange is the surface pressing action on the molded parts increased.
An dem Schaft des Stanznietes ist mindestens eine Ringnut vorgesehen, in die Material aus dem unteren Formteil eindringen kann.On the shank of the punch rivet at least one annular groove is provided, can penetrate into the material from the lower mold part.
Für die Vernietung von unterschiedlich dicken Formteilen mit einem gleichen Stanzniet kann der Schaft des Stanznietes auch länger ausgeführt sein und mehrere Ringnuten besitzen.For the riveting of different thickness moldings with a same punch rivet, the shank of the punch rivet can also be made longer and have a plurality of annular grooves.
Die Erhebung in der Matrize ist vorteilhafterweise ein zum Stanzniet konzentrischer ebener Ring, der das Material des unteren Formteils in die Ringnut drückt und den Stanzniet festsetzt. Dazu wird der Pressdruck auf den Stanzniet nach dem Durchstanzen weiter erhöht.The survey in the die is advantageously a punch rivet concentric planar ring which presses the material of the lower mold part in the annular groove and sets the punch rivet. For this purpose, the pressing pressure on the punch rivet is further increased after punching.
Die Fügekraft für das beschriebene Fügeverfahren mittels Stanznieten wird vorteilhafterweise mittels eines pneumatischen, hydraulischen oder elektromechanischen Antriebs stetig oder impulsförmig aufgebracht.The joining force for the described joining method by means of punch rivets is advantageously applied continuously or pulse-shaped by means of a pneumatic, hydraulic or electromechanical drive.
Wenn zwischen die beiden Formteile vor dem Fügen zunächst ein Klebstoff eingebracht wird, kann die Belastung der Fügeverbindung weiter erhöht werden ohne dass es zu einem Abreißen der Verbindung kommt. Da die Fügeverbindung nach dem Stanznieten kaum wieder auffedert, wird auch die Klebung um das Stanzloch nicht wieder aufgerissen und es kann keine Luft oder Feuchtigkeit in die Fügeverbindung eindringen.If an adhesive is first introduced between the two mold parts before joining, the load on the joint connection can be further increased without the connection being torn off. Since the joint connection hardly rebounds again after the punch riveting, the bond around the punched hole is not torn open again and no air or moisture can penetrate into the joint connection.
Das Werkzeug zum erfindungsgemäßen Stanznieten besitzt neben dem Pressstempel eine Hülse, in der der Stanzniet vor und während des Setzens gehalten wird. Dadurch wird verhindert, dass der Stanzniet während des Aufsetzens auf die Formteile verrutscht oder verkippt, wenn die Formteile durch das Aufsetzen des Stanznietes etwas nachgeben.The tool for punch riveting according to the invention has, in addition to the ram, a sleeve in which the rivet is held before and during setting. This prevents the punch rivet from slipping or tilting during fitting onto the molded parts when the molded parts yield somewhat due to the placement of the punch rivet.
Wenn der Stanzniet durch die Formteile gedrückt wird, wird er aus der Hülse herausgedrückt. Da die Hülse beim Setzen des Stanznietes nicht bis auf die Formteile aufsetzt, erfüllt sie nicht die bisher übliche Funktion eines Niederhalters.When the punch rivet is pushed through the mold parts, it is pushed out of the sleeve. Since the sleeve does not touch down on the molded parts when setting the punch rivet, it does not fulfill the usual function of a hold-down device.
Der Stanzniet wird vorteilhafterweise über einen Unterdruck in der Hülse und an dem Pressstempel gehalten. Dazu ist eine Vakuumbohrung in dem Presstempel vorgesehen, über die der Stanzniet an den Pressstempel angesaugt wird.The punch rivet is advantageously held by a negative pressure in the sleeve and on the press ram. For this purpose, a vacuum hole is provided in the ram, over which the rivet is sucked to the ram.
Die Hülse ist an ihrem unteren Ende federnd aufweitbar, um den Stanzniet nach dem Durchdrücken durch die Formteile freizugeben.The sleeve is resiliently expandable at its lower end in order to release the punch rivet after being pressed through the molded parts.
Wenn die Hülse aus einer federnden Metall-Legierung gefertigt ist, wird sie vorteilhafterweise an ihrem Ende aufgeschlitzt, so dass sich Federzungen ergeben.If the sleeve is made of a resilient metal alloy, it is advantageously slit at its end, so that there are spring tongues.
Die Erfindung wird anhand der Figuren weiter erläutert. Es zeigen:The invention will be further explained with reference to FIGS. Show it:
In
Der Schaft
Das Verfahren zum Stanznieten wird anhand der
Der Stanzniet
Unter den beiden Formteilen
In den
In den
Die flache Unterseite
Der Bereich unterhalb des Flansches wird dabei nicht aufgefedert, da der Pressdruck über den Nietkopf
Die ringförmige Erhebung
Der Stanzniet
Eine sichere und dauerhafte Verbindung ist entstanden, die durch eine Klebstoffschicht
In
Die Verbindung kann mit einem Scherzug von bis zu 25 kN belastet werden. Bei herkömmlich vernieteten Verbindungen, die hier als gestrichelte Kurve dargestellt sind, werden nur 20 kN erreicht und sie reißen nach 0,5 mm vollständig auf.The connection can be loaded with a shear pull of up to 25 kN. For conventionally riveted joints, shown here as a dashed curve, only 20 kN are reached and they crack completely after 0.5 mm.
Die mit dem neuartigen Verfahren mittels Stanzniet gefügte Verbindung hält aber einem Scherzug mit mehr als 5 kN stand und reißt erst nach 2,5 mm vollständig auf.However, the compound joined to the novel method by means of a punch rivet withstands a shear pull of more than 5 kN and breaks completely only after 2.5 mm.
Dieses Verhalten ist besonders in sicherheitsrelevanten Produkten, wie etwa im Automobilbau, wichtig, da eine Restfestigkeit auch nach einer Belastung der Verbindung gegeben ist.This behavior is particularly important in safety-related products, such as in the automotive industry, as a residual strength is given even after a load on the compound.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Stanznietrivet
- 22
- Nietkopf mit FlanschRivet head with flange
- 33
- Schaftshaft
- 44
- Unterseite des FlanschesBottom of the flange
- 55
- Ringnutring groove
- 66
- Presstempelpress die
- 77
- Matrizedie
- 88th
- oberes Formteilupper molding
- 99
- unteres Formteillower molding
- 1010
- Klebeschichtadhesive layer
- 1111
- Ringförmige ErhebungRing-shaped elevation
- 1212
- Hülseshell
- 1313
- Butzenslugs
- 1414
- Schlitzslot
- 1515
- Werkzeugführungtool guide
- 1616
- Vakuumbohrungvacuum bore
- 1717
- Federfeather
- FF
- Kraftforce
- SS
- Wegpath
Claims (13)
Priority Applications (1)
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DE102009044888A DE102009044888B4 (en) | 2009-12-14 | 2009-12-14 | Method and tool for mechanically joining at least one lower and one upper mold part by means of a punch rivet |
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DE102009044888A DE102009044888B4 (en) | 2009-12-14 | 2009-12-14 | Method and tool for mechanically joining at least one lower and one upper mold part by means of a punch rivet |
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DE102009044888A1 DE102009044888A1 (en) | 2011-06-16 |
DE102009044888B4 true DE102009044888B4 (en) | 2013-03-14 |
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DE102010000500B4 (en) | 2010-02-22 | 2012-02-16 | Ortwin Hahn | Method and associated locking ring for mechanical joining of at least one lower and one upper molded part by means of a punch rivet |
DE102012202242A1 (en) | 2012-02-14 | 2013-08-14 | Airbus Operations Gmbh | Method for joining and punching rivet |
DE102012204130A1 (en) * | 2012-03-16 | 2013-09-19 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for joining joining partners by means of a punch rivet |
DE102012104982B4 (en) | 2012-06-11 | 2016-11-03 | Profil Verbindungstechnik Gmbh & Co. Kg | Method for mechanically joining at least one lower and one upper molded part |
DE102012017289A1 (en) * | 2012-08-31 | 2014-05-15 | Audi Ag | Stamping element, useful in fastening arrangement for resistance welding of joining members e.g. sheet metal parts, comprises head element and shaft element having annular contour located at its one end facing away from end of head element |
DE102012021277B3 (en) * | 2012-10-29 | 2014-02-06 | Audi Ag | Method for mechanical joining of two components of composite component by punch riveting, involves arranging existing bowl-shaped counter piece on side that is opposite to punching tool at joint point before stamping of punch rivet |
US10293428B2 (en) | 2013-06-26 | 2019-05-21 | Arconic Inc. | Resistance welding fastener, apparatus and methods |
CN103692408B (en) * | 2013-12-13 | 2015-06-03 | 合肥江航飞机装备有限公司 | Pressing rivet device used for one-way valve shell assembly |
CN106163721B (en) | 2014-02-03 | 2021-10-15 | 豪梅特航空航天有限公司 | Resistance welding fastener, apparatus and method |
KR20170086651A (en) | 2014-12-15 | 2017-07-26 | 아르코닉 인코포레이티드 | Resistance welding fastener, apparatus and methods for joining similar and dissimilar materials |
JP6647383B2 (en) | 2015-09-16 | 2020-02-14 | アーコニック インコーポレイテッドArconic Inc. | Rivet feeding device |
US10593034B2 (en) | 2016-03-25 | 2020-03-17 | Arconic Inc. | Resistance welding fasteners, apparatus and methods for joining dissimilar materials and assessing joints made thereby |
JP6615041B2 (en) * | 2016-04-25 | 2019-12-04 | 株式会社青山製作所 | Bolt caulking method and caulking device |
CN107900275B (en) * | 2017-10-24 | 2024-04-16 | 史广材 | Automatic feeding and riveting press |
JP2021142552A (en) * | 2020-03-13 | 2021-09-24 | ポップリベット・ファスナー株式会社 | Fastening method and fastening device of self-boring type rivet |
CN112808923A (en) * | 2021-02-19 | 2021-05-18 | 长春吉文汽车零部件有限公司 | Flexible press riveting die for stamping parts |
CN116329461B (en) * | 2023-04-18 | 2023-12-26 | 广州亨龙智能装备股份有限公司 | Riveting machine and self-punching rivet |
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