WO2012113463A1 - Stanzstauchniet - Google Patents
Stanzstauchniet Download PDFInfo
- Publication number
- WO2012113463A1 WO2012113463A1 PCT/EP2011/059722 EP2011059722W WO2012113463A1 WO 2012113463 A1 WO2012113463 A1 WO 2012113463A1 EP 2011059722 W EP2011059722 W EP 2011059722W WO 2012113463 A1 WO2012113463 A1 WO 2012113463A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rivet
- punching
- shank
- components
- head
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims description 112
- 238000004080 punching Methods 0.000 claims description 94
- 238000004049 embossing Methods 0.000 claims description 84
- 239000000463 material Substances 0.000 claims description 66
- 239000004033 plastic Substances 0.000 claims description 24
- 229920003023 plastic Polymers 0.000 claims description 24
- 230000009467 reduction Effects 0.000 claims description 23
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 20
- 239000002131 composite material Substances 0.000 claims description 18
- 229910052749 magnesium Inorganic materials 0.000 claims description 18
- 239000011777 magnesium Substances 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 9
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 7
- 239000006228 supernatant Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 230000008569 process Effects 0.000 description 44
- 238000005096 rolling process Methods 0.000 description 15
- 239000011159 matrix material Substances 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000007514 turning Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 5
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- 238000013461 design Methods 0.000 description 5
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- 238000003754 machining Methods 0.000 description 5
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- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
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- 230000009471 action Effects 0.000 description 3
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- 238000002360 preparation method Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
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- -1 brittle Chemical compound 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
- B21K1/54—Making machine elements bolts, studs, or the like with grooves or notches
-
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/58—Making machine elements rivets
-
- 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
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/06—Solid rivets made in one piece
-
- 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
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/08—Hollow rivets; Multi-part rivets
- F16B19/086—Self-piercing rivets
-
- 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
Definitions
- the invention relates to a method for producing a stamped-embossed connection, wherein a stamped-embossed rivet is provided with a rivet head, the one
- the invention relates to a stamped embossing rivet and a set of two components with a
- a method for producing a riveted joint by means of a stamped embossment is described for example in DE 203 00 533 Ul.
- the punching embossed rivet is pressed by a riveting punch from top to bottom through the fixed by means of a hold-down parts, wherein in the parts to be joined flush
- Punching holes are created. After completion of the punching operation is in the lower joining part by means of a corresponding die around the shaft around a
- Rivet connections that ensure comparatively little stability. In addition, the process is perceived as time consuming and costly.
- the object of the present invention is a stamped embossing method
- This object is in procedural terms with a method for
- the object is achieved by a method for producing a punched-embossed connection, wherein a stamped embossing rivet is provided with a rivet head which forms a frusto-conical or cylindrical head-like enlargement, for example, and a shaft adjoining the rivet head, wherein the shank a first, the rivet head receiving component and at least one second component punched through to form a punching hole and wherein a Nietfuß is popped during or after stamping to form a buckling.
- a first core idea of the present invention therefore consists in upsetting the punched embossment after it has been punched into the components in a further method step.
- the upsetting is effected by a force against a punching direction.
- the rivet is hardened, in particular in the region of a rivet foot.
- an extension of the punching embossed rivet is formed in the radial direction, so that the material of the punching embossed rivet is urged radially in the direction of a perforated wall of the stamped hole and the stamped embossment is thus positively and non-positively connected to the components.
- upsetting is a relatively simple process that can be carried out inexpensively.
- the punched-embossed connection produced by the method is characterized by a high stability, in particular because of the upsetting (preferably) Material of the punching embossing rivet is forced into the components and not as in the prior art, for example by molding an annular groove, material of the components in recesses of the rivet shank is crowded. To a certain extent, it can also come in the present process to an urging of material of the components in the direction of the rivet shank.
- a length of the punched embossing rivet or the rivet shank is greater than a total thickness of the components when they abut each other.
- the length may be greater by at least 2%, more preferably at least 5%, even more preferably at least 10%.
- a resulting supernatant can be easily upset, so that the Nietfuß can be easily extended for safe production of riveting.
- the rivet foot can finish flush with the second component after riveting, in particular after compression, thereby ensuring a secure connection and at the same time a visually appealing overall impression.
- the rivet foot after riveting, in particular after swaging, the rivet foot can form a projection with respect to the second component. In particular, with a comparatively brittle material of the second component, a secure riveting can be achieved in this alternative.
- At least one, in particular circumferential, shaft groove and / or elevation is introduced into the shaft (or is introduced).
- the shaft can also be formed without shaft groove and / or elevations (ie smooth).
- the first and / or at least second component made of a light metal or a light metal alloy, in particular aluminum or an aluminum alloy, for example cast aluminum or a
- Fiber composite plastic FRP
- MRP Fiber composite plastic
- magnesium (and magnesium alloys) is (are) particularly brittle, yet can be achieved with the aid of the present method by the principle of pushing material of the punched embossment rivet in the component by a Aufstauchung a reliable connection of the components.
- Fiber reinforced plastics are materials that contain reinforcing fibers and a
- Plastic matrix include.
- the plastic matrix may surround the fibers, which may be bonded to the plastic matrix by adhesive or cohesive forces.
- Fiber composite plastics have a directional elasticity behavior.
- Fiber-reinforced plastics usually have high specific stiffnesses and strengths. This makes them suitable materials in lightweight applications.
- a problem with these fiber composite plastics in particular is to connect them to another component, for example a further fiber composite plastic component.
- At least one component is made of a fiber composite plastic and one, in particular a plurality, preferably circumferential, shaft groove (Schaftnuten) and / or survey (surveys) are incorporated (or be).
- the Schaftnuten or surveys improve engagement of the rivet shank during insertion with the fiber composite plastic, resulting in a deadweight effect. As a result, this will prevent (or at least reduce the likelihood) that the fiber composite plastic will be partially entrained during punching, but in some cases elastically spring back so that the fiber composite plastic is damaged (for example spread apart), which would lead to a less robust connection.
- the combination of shaft groove or elevations with at least one fiber composite plastic thus leads to an improved (rib) connection of the fiber composite plastic with another component, in particular a further fiber composite plastic component.
- a groove in particular an annular groove, can be formed around the shaft end.
- a brittleness of the second component may be greater than a brittleness of the first component (or vice versa). If the brittleness of the second component is greater, a secure connection can nevertheless be ensured with the present method.
- the brittleness is a measure that determines how far a material can be plastically deformed before it breaks.
- the stamped embossment is made of a material with less brittleness than the first and / or at least second component.
- a die with a recess for discharging the punch-Butzens is used to support the components during punching.
- For upsetting can also be used, in particular perpendicular to a Aufstauchraum slidable and / or rotatable die, which preferably has a recess for discharging the punch-Butzens.
- the die for supporting the components during punching and the die for upsetting the same a particular displaceable perpendicular to a Aufstauchraum and / or rotatable die
- the die can be designed in a turntable-like manner and have a recess for discharging the punched Butzens, wherein the position of the recess relative to the punched rivet connection can be varied by turning.
- a material reduction is introduced at a Nietfuß.
- the material reduction can, for example, in cross section
- the material reduction may be triangular or pyramidal.
- the material reduction may be a groove (triangular in cross-section) that runs along a diameter of the rivet foot.
- the material reduction can also represent a recess which has a peripheral edge within an edge of the Nietfußes (ie not completely through the Nietfuß).
- Such a material reduction may for example also be conical or frusto-conical or cylindrical or pyramidal. In general, the material reduction can therefore be a
- the material reduction or recess reduces the forces that occur during compression in the area of the rivet foot.
- damage to the components can be avoided or reduced and a secure connection can be ensured.
- the Nietfuß by a linear movement, in particular a first die portion opposite a second die portion, upset.
- the linear movement can be realized for example via a toggle mechanism.
- only a part of the matrix bottom can be moved relative to an other matrix segment.
- a basic idea is to form the die in several parts, wherein a first die portion is movable relative to a second die portion (linear).
- a material slug can be easily removed and on the other hand the Aufstauchung done comparatively easy.
- a constructive simplification of the method is realized.
- the above object is achieved independently by a set of a first and at least a second component having a predetermined total thickness, in particular by a method of the type described above, wherein the punched embossing rivet a rivet head, which forms a, for example, frusto-conical or cylindrical, head-like extension , and having a shaft attached to the rivet head and a shank end, wherein for making a rivet connection between the components, when they abut each other, the shaft, the components pierced to form a punching hole, wherein a length of the punched embossing rivet or the shank a Sum of the thicknesses of the two juxtaposed components exceeds, preferably by at least 2%, more preferably by at least 5%, even more preferably by at least 10%, such that a Nietfuß the punching embossing rivet is expandable by upsetting.
- the advantages reference is made to the method described above.
- the stamped embossment is made using at least one
- a stamped embossing rivet in particular for the above-described stamped embossing method, preferably as part of the above-described set, comprising a rivet head which forms, for example, a frusto-conical or cylindrical head-like enlargement, and one to the rivet head subsequent shank, wherein for producing a rivet connection between the components, when these abut against each other, the shaft punched through the components to form a punched hole, wherein the punching Regeniet has an excess length, which projects beyond the punching of the components on this and can be upset.
- a rivet foot of the punched embossment can have a material reduction, in particular triangular and / or pyramidal in cross section. Further properties and embodiments of the material reduction have already been described above in connection with the method for producing a stamped-embossed connection. Also with regard to the advantages of such a material reduction, reference is made to the corresponding method. According to an independent aspect, the stamping embossment can be manufactured using at least one pressing operation in cold forming technique.
- the complete rivet or at least one rivet blank can be produced by a pressing process using cold forming technology. Surprisingly, despite the tight
- the starting material usually has a temperature of over 1000 ° C (eg in the case of steel). Cold forming, however, is below the
- Recrystallization temperature of the material carried out In general, that has
- warm forging which for the purposes of the present application is also to be attributed to cold forming, the starting material has a temperature below the forging temperature, for example between 200 ° C and 900 ° C.
- forming advantages can already occur at temperatures of 150 ° C upwards.
- preferably made of metal in particular of steel or aluminum may be formed of a metal in any case, on the one hand for Kaltformischen
- Machining well on the other hand also ensures the desired properties in the later riveting process, namely on the one hand, the required punching of the components and on the other hand ensuring a safe and durable
- Riveting is also conceivable, instead of a metal, to consider other materials which can be plastically deformed using cold forming technology and nevertheless have the abovementioned properties for the riveting process.
- the rivet head is also one of the
- Truncated cone shape may have different extension. It is crucial that, in the projection on a plane lying perpendicular to the axial direction of the rivet, the head protrudes over the maximum cross-section of the shank at least in places to cause an axial fixation.
- the head can also be one of the
- the head can taper continuously or gradually from its distal end.
- the contour, ie the outline of the rivet head forming extension can be convex, concave, designed with or without (pronounced) radii at the transitions.
- the stamped embossing rivet produced by cold forming has at least one shank groove with a groove surface hardened due to the pressing process or another pressure action. It thus occurs here a synergistic effect, so that on the one hand time and production costs can be reduced by the production in cold-forming processes, but on the other hand, the additional effect can be used that due to the flow of material just the groove surfaces can be made particularly hardened during cold forming technical deformation , In addition, the cold-forming process results in a material hardening and thus an increase in strength in the entire rivet.
- the punched embossment may have one or more circumferential shaft grooves.
- different cross-sectional shapes come into consideration for the shank grooves, as is already known from the prior art, cf.
- the shank groove also does not have to be formed completely encircling, but the principle of a punched embossment with one or a plurality of indentations, pockets, o. ⁇ .
- the at least one shank groove in the same pressing operation as the rivet head or in different forming processes.
- At least one shank groove by a rolling process, in particular under the action of a flat jaw or round jaw roller to produce.
- the punching embossing rivet produced by cold forming has a rivet shank extended with respect to the component thickness, wherein the distal protrusion defines an extension of the rivet shank, which is designed to be compressed after punching through the components.
- an axial connection of the components takes place in that a shank groove or undercut is pressed in; instead, this configuration is reshaped itself at its distal end after the punching process of the punched embossed tooth.
- Nietkopf subsequent rivet shank which forms over the thickness of the adjacent components abutting a projection, wherein for producing a riveted joint between at least two adjacent components of the rivet shank with the supernatant, the components to form a
- the supernatant has a length of 2%, more preferably of 5%, even more preferably of 10% of the thickness of the juxtaposed components to be joined.
- the stamped embossing rivet has a stamping edge facing away from the rivet head with a surface hardened due to the pressing process or another pressure action.
- a material compaction is created just in the area of the punching edge. This material compression can in particular in a continuous operation for the production of punching embossing rivet, in particular in a press or in special Tools are produced in a continuous work process.
- a possibly pre-compressed punching edge for example, during the process of introducing the Schaftnuten, for example by a rolling process by
- the rivet manufacturing process may provide that the stamped embossment is produced in a continuous manufacturing process.
- the pressing process for producing the rivet or a rivet blank comprises at least one of the following steps, preferably all subsequent steps in the sequence mentioned:
- the step of the final compression also includes the simultaneous formation of at least one circumferential shaft groove.
- the at least one circumferential shaft groove in the rivet blank but also by a rolling process, in particular by means of a Flachbacken- or
- the at least one circumferential shank groove in the rivet blank by machining, in particular by a turning operation, a milling process or a grinding process.
- a shank groove with a hardened groove surface is simultaneously produced by the cold-forming process.
- the use of the stamped embossing method for magnesium materials is preferred, preferably without additional heating of the joint.
- a magnesium casting may be attached to a metal sheet
- Magnesium cast components are easily attached to metal sheets with a secure connection.
- steel components with aluminum components can be riveted particularly securely.
- a component deformation or pocket formation is reduced, in particular if adhesive is used at the same time.
- High-strength aluminum alloys are currently still preferred as die castings (for example, chassis and body parts) used.
- Aluminum alloys are usually easy to cast and form and can also be heat treated and coated. Compared to steel, such alloys are about three times lighter and have similar strength and toughness properties. Since magnesium is even lighter than aluminum, it is generally even more preferred.
- one problem at the moment is the economical production of die-cast and / or sheet metal parts made of magnesium (alloys) and in particular to be combined with other components, such as metal sheets. The proposed punch-embossing process thus significantly improves the possibility of using magnesium (alloy) components.
- magnesium (alloy) components in automotive engineering can be riveted to (simple) body parts with (remaining) body parts.
- a method for producing a stamped-embossed connection according to a first embodiment in a schematic view a method for producing a stamped-embossed connection according to a second embodiment in a schematic view; a set of two components having a predetermined thickness and a punching embossing rivet according to an embodiment of the present invention, wherein the punching embossing rivet is formed without a shank groove, wherein the rivet is upset during or after the punching to form an upset; a punching embossing rivet with two adjacent components according to the set of FIG.
- FIGS. 12a and 12b show an embodiment of a device according to the invention
- FIGS. 13a and 13b show an embodiment of a device according to the invention
- 15a to 31a show various embodiments of a punching embossment produced by the method according to the invention in a first oblique view
- FIGS. 32 to 34 show various embodiments of a stamped embossment produced by the method according to the invention in a sectional view
- Fig. 35 shows the embodiment of FIG. 27 in a partial
- FIGS. 36 to 79 show different embodiments of a punching embossment produced by the method according to the invention in an oblique view;
- 80a to 80d show the production of a stamped embossment according to the invention in accordance with a first embodiment of the cold-forming production method proposed here;
- 81a to 81d show the production of a stamped embossing rivet with a plurality
- FIG. 82 shows an embodiment of a stamped embossing rivet in a side view, in particular for the processing of fiber composite plastic components
- FIG. 83 shows a first embodiment of a shaft foot in a view from below
- FIG. 84 shows a second embodiment of a shaft foot in a view from below.
- a punching embossment 10 can be seen, which is arranged above a first component 42 and a second component 43.
- the components 42 and 43 are clamped by a clamping device 11.
- the clamping device 11 may preferably (as in the present example) comprise a hold-down 12, which can pressurize the components 42, 43 (in Fig. La) from above. Furthermore, the
- Clamping device 11 comprise a die 13, which preferably (as in
- the punching embossment 10 can be urged by a riveting punch 48 against the components 42, 43 or the die 13.
- For jamming can additionally hold down 12th are urged against the die 13 (which is symbolized by the arrows 49 in Fig. La).
- the die 13 can be positioned such that the die recess 47 is no longer located below the punching embossing rivet 10.
- the die 13 for example, translationally shifted and / or rotated.
- the matrix 13 can be
- the die 13 be designed, for example, a turntable, wherein preferably a the components 42, 43 opposite side of the die 13 can be supported from below.
- the matrix 13 After the matrix 13 has been repositioned, it can be pushed upwards (or in the direction of the components 42, 43), so that the matrix 13 exerts a force on the rivet 10 or a rivet foot 29 (see FIG. As a result, the Nietfuß 29 is adoptedstaucht to form a bulge 45.
- the arrows 49 in Fig. La to le indicate the direction of the force that exert the corresponding elements on the components 42, 43 and the punching embossment 10. In this case, hold-down 12 or riveting punches 48 can be urged against the die 13 (and / or vice versa).
- the punched embossing rivet has a shank groove 16, into which material of the components 42, 43 (specifically of the component 43, see Fig. Le) can penetrate.
- Concrete designs of the punched embossment rivet 10, in particular with regard to one or more shank grooves 16, are described below.
- Figures 2a to 2e show a second embodiment of a method for producing a stamped-embossed connection.
- a punched embossment is shown used, which has no shank groove 16 and thus substantially formed on its rivet shank 15 smooth.
- the rivet used here is thus particularly easy to manufacture. Nevertheless, a secure connection of the components 42, 43 can be achieved by the formation of the upset 45 in the region of the Nietfußes 29 of the punching embossing tenes 10.
- FIGS. 3 to 5 show a punching embossment, for example, according to FIGS.
- first component 42 and a second component 43 which are arranged one above the other.
- 3 and 4 illustrate a joining method in which for the axial connection of two or more components, not the material of one or more components formed, in particular in openings, recesses or grooves of the punched embossed rivet is pressed, but in which after the punching process, if necessary ., in a continuous continuous process immediately thereafter or in a separate step, a deformation, namely an upsetting of the Nietfußes is made.
- FIG. 3 schematically illustrates a set of two components having a predetermined thickness and a punching embossing, wherein the punching embossing has an overhang 44 with respect to the thickness of the adjacent components 42 and 43 to be connected to one another, which results in the formation of an upset 45
- the upset rivet foot 29 terminates flush with the component 43, so the upset 45 does not protrude beyond the component 43.
- the upset 45 of the Nietfußes also a lug 46 (by the riveting) form and so protrude from the component 43.
- the upsetting results in a swelling 45 of the rivet foot 29 that is widened in cross section relative to the rivet shank 15.
- This swelling is preferably at least 2%, more preferably at least 5%, and even more preferably at least 10% wider than the rivet shank 15 (relative to a direction perpendicular to the shaft longitudinal axis).
- At least one punching hole formed by the stamping process of at least one component can pass through the
- the punch hole may also be during the Aufsclerosiss in its form (essentially) remain, in particular by the Nietfuß 29 is extended outside of the component.
- the punching embossment has no shank groove.
- the punching embossment can have shank grooves and / or elevations according to those described above
- a preferred method sequence comprises the steps of 1) clamping the components between a hold-down or the rivet and punch and a die, in particular with a recess for receiving a punch-Butzens; 2)
- the joining direction is comparatively variably adjustable (the direction of joining being understood to mean the sequence of a thin component and a thick component in the punching direction). It can be comparatively high shear, peel and Kopfzugfesttechnik achieved over solid rivets. It is possible to reduce the joining score compared to punched rivets. Overall, a high degree of flexibility in terms of material and sheet thickness combinations is achieved. For example, it is possible to dispense with different matrices.
- the riveted surface can close on both sides almost flush with the rivet ends, which is visually appealing. A component deformation (in particular pocket formation) can be reduced. Also materials (such as
- Magnesium casting alloys that could not previously be joined by a stamped riveting process can be provided by the proposed method.
- Fig. 6 is a punched embossment, which is made in cold forming and has a circumferential shaft groove 16 is shown.
- the stamped embossing rivet includes a rivet head 14, here by a head-like extension 20 which is connected to a
- the rivet head 14 is adjoined by a rivet shank 15 which, at its end facing away from the rivet head 14, has a rivet foot 29 which is delimited by a circumferential punching edge 18.
- Cross-sectional shape an approximate to a 1/2-drops outline shape or, as here, a groove having a groove base which is parallel to the longitudinal axis of the shank 15
- the rivet head 14 facing groove side surface is less open to the outside, because the opposite groove side surface.
- a shank groove 16 is provided and cold-formed, material is compacted in the area of the groove surface 17, wherein the groove surface 17 at least the groove bottom, but preferably also includes the groove side surfaces.
- the material compaction on the groove surface 17 caused by the cold-forming process results in a harder surface which, in this respect, ensures an even more defined connection with respect to a component which engages in the shank groove 16 by material flow in the riveting process.
- FIGS. 7a, 7b illustrate a possible production method for producing a punched embossed rivet with a shank groove 16 in cold forming technology.
- a rivet blank 19 is produced using a corresponding press.
- the rivet blank 19 in accordance with FIG. 7a can thus be further processed in a second process step, which may also be completely separate from time and space, in order to introduce the at least one shank groove 16 necessary for the riveting process (see FIG. 7b).
- the shank groove 16 can be introduced, for example, by a rolling or rolling process, in particular with a flat-jaw or round-jaw rolling machine, and therefore also this second process step can be implemented in cold-forming technology. It is advantageous that a hardened groove surface 17 is created by the material compaction and a corresponding rolling or rolling process can be implemented inexpensively.
- Fig. 8 is a modified embodiment of a stamped embossing rivet, which is produced by the method according to the invention illustrated. Specifically, it is a punched embossed rivet with a plurality of shank grooves 16. The punched embossment is otherwise constructed largely analogous to the already described with reference to FIG. 6 punched embossing rivets, wherein the cross-sectional shape of the present here Schaftnuten 16 of the shank 16 differs according to the embodiment of FIG. 7.
- the punching embossing rivet according to FIG. 8 also has a rivet head 14 and an opposing rivet foot 29.
- the rivet head 14 is also defined here by a head-like extension 20, which has a substantially frusto-conical shape.
- the rivet shank 15 has a plurality, in this case specifically five, shank grooves 16, which here have the same cross-sectional profile, but in other embodiments may also have different cross-sectional shapes.
- the Nietfuß 29 simultaneously defines the already described above punching edge 18th
- FIGS. 9a, 9b illustrate the production of a punched embossed rivet with a plurality of shank grooves 16 according to a possible cold-forming process.
- a rivet blank 19 with rivet head 14 is formed by pressing in a cold forming press.
- the plurality of shank grooves 16 are introduced in a second method step (FIG. 9b), in which case-similarly as already explained with reference to FIGS. 7a and 7b-an introduction likewise takes place in a cold-forming process, in particular by rolling or rolling, for example by means of a flat jaw. or round jaw rolling machine, or else machined, for example, by turning, milling, grinding can be done.
- care must be taken with a design of the plurality of Schaftnuten 16 in a cold forming technology that the Nietfuß 29 is formed with the functionally essential punching edge 18 in a defined form.
- FIGS. 10a, 10b and 11a, 11b show further production variants of a stamped embossing rivet with a plurality of shank grooves in cold forming technology
- the rivet blank according to FIG. 10 a has an embossment 27 encircling the rivet shank 15, which forms a cylinder section of reduced diameter relative to the rivet foot 29.
- an indentation 27 ' is likewise formed, but this indentation 27' is dimensioned significantly shorter in the axial extent of the stamped embossing rivet and provided only adjacent to the rivet foot 29.
- Both the rivet blank according to FIG. 10 a and the rivet blank according to FIG. 1 a already form the rivet foot 29 with a defined punching edge 18, so that it remains unchanged during the subsequent introduction of the shaft grooves 16.
- the plurality of shaft grooves 16 can again be used in a cold-forming or rolling process, in particular by means of a flat-jaw or rolling process
- Round jaw rolling or machined, for example, by turning, milling, grinding, are introduced.
- FIGS. 12a and 12b illustrate a further embodiment of a stamped embossment produced by the method according to the invention.
- the punching embossing rivet according to FIGS. 12a and 12b initially has a shape substantially corresponding to the basic shape of the stamped embossment according to FIG. 8, but is characterized in that here at least one, in the present case concrete three in Axial direction of the rivet extending longitudinal grooves 30 are provided.
- Longitudinal grooves 30 can be machined, but preferably they are also introduced in accordance with the principles of the present application by cold molding, either in a common
- Step for example, with training of the Schaftnuten 16, or in a previous or subsequent separate step.
- the longitudinal grooves define a rotational orientation, so that within the manufacturing or
- Post-processing step of the rivet can be recorded, transported or processed in a predetermined rotational orientation. Even in later use, the longitudinal grooves cause a decisive advantage. Two or more interconnected components are held against rotation against each other with even higher strength than in a completely rotationally symmetrical rivet.
- the depth of the longitudinal grooves 30 is dimensioned slightly deeper than the depth of the shaft grooves 16 extending orthogonally for this purpose, so that in each case a continuous groove bottom is formed in the axial extension of the rivet in the longitudinal grooves 30.
- the depth of the longitudinal grooves may also be less deep than the depth of the Schaftnuten.
- FIGS. 13a and 13b illustrate a modified embodiment of a rivet produced by the method according to the invention.
- one or more longitudinal webs 31 are provided instead of extending in the axial direction of longitudinal grooves, each extending from the groove bottom of the Schaftnuten 16 almost to
- the longitudinal webs 31 are on aligned in a common line, so that a web escape 32 is defined. There may be one or more such web alignments 32 on a rivet,
- each offset by 120 ° arranged web alignment 32 may be provided. Similar to that described with reference to FIGS. 12a and 12b
- Embodiments are as described with reference to FIGS. 13a and 13b
- FIGS. 14a to 14f illustrate various embodiments of a stamped embossment produced by the method according to the invention.
- FIGS. 14a and 14b show a stamped embossing rivet with only one circumferential shank groove 16, the shank groove 16 having a semi-drop-shaped cross-sectional area with a steeper groove flank on the side facing the rivet foot 29 than on the side facing away from the rivet foot 29.
- FIGS. 14c and 14d a so-called Mehr Hochsniet corresponding substantially to the illustration of FIG. 9 is illustrated, which has a plurality of equidistantly spaced Schaftnuten 16, in this case specifically five Schaftnuten 16. Except for a narrow collar on Nietfuß 29 and below the rivet head 14 of the complete rivet shank 15 is occupied with shank 16 grooves.
- FIGS. 15a, 15b to 79 show exemplary embodiments of a stamped embossing rivet, which is characterized in particular by an improved rotational fixing in the production process and / or during the aftertreatment, in particular in the later application of the connection of at least two components.
- Figures 15a, 15b to 35 show punched-embossed rivets without shank groove 16 and are in particular designed or provided to connect at least two components under deformation of the Nietfußes 29 (see also Figures 3, 4 and 5).
- FIGS. 15 a, 15 b show a stamped embossing rivet with a design of the rivet head 14 analogous to FIG. 6 (this can also be designed differently) and a Rivet shaft 15 whose outer wall runs parallel to the shaft longitudinal axis
- a cross-section of the rivet shank 15 perpendicular to the shank longitudinal axis is substantially octahedral, whereby edges 34 running parallel to the shank longitudinal axis are chamfered or rounded.
- FIG. 16a, 16b substantially corresponds to the embodiment according to FIGS. 15a, 15b, but the cross section perpendicular to the shaft longitudinal axis corresponds to a hexagon with rounded edges 34 (beveled).
- 17a, 17b show an embodiment of a punching embossing rivet with several (three) along the rivet shank 15 on its outer surface parallel to
- Shank longitudinal axis extending longitudinal grooves 30.
- Shank longitudinal axis is (essentially) round.
- FIGS. 18 a, 18 b corresponds (substantially) to the exemplary embodiment according to FIGS. 17 a, 17 b, but four longitudinal grooves 30 are incorporated instead of three longitudinal grooves 30.
- edges for example, can be bevelled or rounded off, for example, in the transition from the longitudinal groove to the region outside the groove.
- 19a, 19b show a further embodiment of a stamped embossing rivet with a cross section perpendicular to the longitudinal axis of the shaft, which is of star-shaped design, specifically (essentially) designed as a six-pointed star.
- edges and transitions can be chamfered or chamfered or rounded (this also applies to all the aforementioned and following embodiments).
- FIGS. 20 a, 20 b show an embodiment of a punched embossed rivet with a triangular cross-section perpendicular to the longitudinal axis of the shaft.
- the rivet shank 15 thus forms (approximately) a prism with a triangular base.
- Prism top surfaces 40 are preferably arched outwardly (eg, at least an amount of 5% of the shaft diameter). Between the three (arched) prism top surfaces 40 are compared to these narrower intermediate surfaces 41 are provided. These intermediate surfaces 41 preferably have less than 50% of an extension in the longitudinal direction, based on the extension in the longitudinal direction of the (curved) prism top surfaces 40. Overall, the cross section of FIG. 20a, 20b also be considered (nourished) as a hexagon. The intermediate surfaces 41 may also be curved outwards.
- the embodiment of a stamped embossing rivet according to FIGS. 21 a, 21 b has a cross section perpendicular to the longitudinal axis, which is (substantially) octagonal.
- the rivet shank 15 thus forms (approximately) a prism with an octagonal base.
- a wider prism top surface 40 alternates with a narrower prism top surface 40, the narrower prism top surface 40 preferably being less than 50% of the width perpendicular to the longitudinal direction of the prism top surface 40
- Rivet shaft has, as the wider prism top surfaces 40th
- the embodiment of a stamped embossing rivet according to FIGS. 22 a, 22 b corresponds with respect to the rivet shank 15 of the embodiment according to FIGS. 15a, 15b, wherein the rivet head 14 is designed deviating.
- the rivet head 14 has (except for a conical region immediately adjacent to the rivet shank 15) a cross section corresponding to the cross section perpendicular to the longitudinal axis of the rivet shank 15, but the cross section perpendicular to the longitudinal axis of the rivet head 14 is greater, for example at least 10%. (in terms of the distance from two opposite sides).
- FIGS. 23 a, 23 b corresponds (substantially) to FIG. 16a, Fig. 16b, but (analogous to Fig. 22a, 22b), the cross section of the rivet head 14 in its shape corresponds to the cross section perpendicular to the longitudinal axis of the rivet shank.
- FIG. 24a, 24b the height of the area of the rivet head having a hexagonal cross-sectional shape according to the
- Rivet shaft 15 has with respect to FIG. 23a, 23b is reduced, in particular less than 1.5 mm.
- FIGS. 25a, 25b and 26a, 26b correspond to the embodiments according to FIGS. 20a, 20b and 21a, 21b, respectively, with regard to the design of the rivet shank 15.
- the rivet head 14 has the same shape (analogous to FIG Fig. 22a, 22b) to the shape of the rivet shank of FIG. 20a, 20b and 21a, 21b is adapted.
- the cross section is also in the embodiments according to FIGS. 25a, 25b and 26a, 26b are larger (for example by at least 10%).
- side surfaces of the rivet heads 14 are respectively
- Rivet shaft 15 are arranged offset or have an angle.
- FIGS. 27a, 27b show an embodiment of a stamped embossing rivet with a rivet head 14 according to FIGS. 23a, 23b and a rivet shank 15 according to FIGS. 22a, 22b.
- FIGS. 28a, 28b shows an embodiment of a stamped embossing rivet with a rivet head 14 according to FIGS. 26a, 26b and a rivet shank 15 according to FIGS. 22a, 22b.
- FIGS. 29a, 29b shows a rivet head 14 according to FIGS. 23a, 23b and a rivet shank 15 according to FIGS. 25a, 25b.
- FIGS. 30a, 30b shows a rivet head 14 according to FIGS. 23a, 23b and a rivet shank 15 according to FIGS. 17a, 17b.
- FIGS. 31 a, 31 b show an embodiment of a stamped embossing rivet with a rivet head 14 according to FIGS. 23 a, 23 b and a rivet shank 15 according to FIGS. 21 a, 21 b.
- the various embodiments of the rivet heads 14 can be combined with the various embodiments of the shafts 15 as desired. It is also conceivable that a rivet head 14 or a rivet shank 15 at different sections have different cross sections (for example corresponding to the geometric figures shown in the figures).
- FIGS. 27a, 27b to 31a, 31b have recesses 33 which are preferably round in a cross section perpendicular to the longitudinal axis of the shank.
- FIGS. 32 and 35 show an embodiment of the stamped embossing rivet with a recess 33 in the end face 23, which is (essentially) spherical segment-shaped.
- FIG. 33 shows an embodiment of a stamped embossing rivet with a conical configuration of a recess 33 in the region of the end face 23.
- FIG. 34 shows an embodiment of a stamped embossing rivet with a cylindrical configuration of a recess 33 in the end face 23, which likewise has a conical section (subsequently in the direction of the rivet head 14, analogously to FIG.
- FIG. 36 shows an embodiment of a stamped embossing rivet according to FIGS. 15 a, 15 b, but with shank grooves 16 (in particular analogous to FIG. 8) introduced.
- FIG. 37 shows an embodiment of a stamped embossing rivet according to FIG. 16a, 16b, wherein, however, in the region of the edges 34 shank grooves 16 are introduced, which have a spacing from shank grooves 16 of the respectively adjacent edge 34.
- Fig. 37 thus no circumferential Schaftnuten 16 are shown, but individual mutually delimited shank grooves.
- FIG. 38 shows an embodiment of a punched embossing rivet according to FIGS. 17 a, 17 b, wherein, however, circumferential shaft grooves 16 according to FIG. 36 are incorporated.
- the shaft grooves 16 are less deep than the longitudinal grooves 30, so that the Schaftnuten 16 are interrupted by the longitudinal grooves 30.
- FIG. 39 shows an embodiment of a punching embossing rivet according to FIGS. 18a, 18b, wherein shaft grooves 16 are introduced analogously to FIG.
- FIG. 36 shows an embodiment of a punched embossed rivet according to FIGS. 20a, 20b, wherein in the region of the intermediate surfaces 41 shank grooves 16 are introduced, each having a distance from the shank grooves 16 of the adjacent intermediate surface 41.
- FIG. 41 shows an embodiment according to FIG. 21a, 21b, wherein shaft grooves 16 are introduced analogously to FIG. 40 in the region of the intermediate surfaces 41.
- FIG. 42 shows an embodiment of a punching embossing rivet according to FIGS. 19a, 19b, wherein shaft grooves 16 are made in the region of the truncated tips of the rivet shank which is star-shaped in cross section.
- FIG. 43 shows an embodiment of a punched embossed rivet with an imprint 27 according to FIG. 10a.
- the elevations 36 are pyramidal constructed with a rectangular base. Furthermore, the elevations 36 are aligned in the direction of the longitudinal axis of the rivet shank 15 and the circumference of the outer surface of the rivet shank 15. As a result, shank grooves 16 (radially extending) and longitudinal grooves 30 form.
- the embodiment of a stamped embossing rivet according to FIG. 44 corresponds (substantially) to the embodiment according to FIG. 43, but the elevations 36 are approximately semi-lenticular.
- FIG. 45 of a stamped embossing rivet also corresponds (substantially) to the embodiment according to FIG. 43, but the end face 23 does not correspond, as in FIG. 10a is formed, but is provided with a plurality of bulges 37, which are aligned with the projections 36 in the shaft longitudinal axis. As a result, the longitudinal grooves 30 extend to the end face 23.
- the embodiment of a stamped embossing rivet according to FIG. 46 corresponds (substantially) to the embodiment according to FIG. 43, but the elevations 36 are each arranged offset with respect to an adjacent elevation 36.
- FIG. 47 corresponds (essentially) to the embodiment according to FIG. 38 or FIG. 39, wherein instead of the longitudinal grooves 30 transverse grooves 38 are provided, which extend at an acute angle to the shaft longitudinal axis
- FIG. 48 of a punched-embossment rivet corresponds (substantially) to the embodiment according to FIG. 47, whereby raised elevations 39 in the vicinity of the transverse grooves 38 are chamfered by the transverse grooves 38.
- the embodiment of a stamped embossing rivet according to FIG. 49 corresponds (substantially) to the embodiment according to FIG. 48, but instead of the elevations 39 Surveys 36 are provided, which are formed as shown in FIG. 38. Furthermore, the number of transverse grooves in FIG. 49 is higher than in FIGS. 47 and 48, respectively. The number may be at least 2, 3 or 4, for example.
- FIGS. 50 to 63 correspond (essentially) to the embodiments according to FIGS. 36 to 49, wherein only two successively arranged shank grooves 16 or 16 are arranged in the shaft longitudinal direction.
- Elevations 36, 39 are provided. These shank grooves 16 or elevations 36, 39 adjoin the end face 23. In a region (which can for example make up 40% to 60% of the extension of the rivet shank 15 in the longitudinal direction) between the shank grooves 16 or elevations 36, 39 and the rivet head 14, the rivet shank 15 is free of grooves or elevations.
- FIG. 64 essentially corresponds to the embodiment according to FIG. 49, but (only) two elevations 36 arranged one behind the other in the longitudinal direction of the shank are provided.
- FIGS. 65 to 79 correspond (essentially) to the embodiments according to FIGS. 36 to 49, wherein only one successively arranged shank groove 16 or elevation 36, 39 is provided in the longitudinal direction of the shank.
- This shaft groove 16 or elevation 36, 39 adjoins the end face 23.
- the rivet shank 15 is free of grooves or elevations.
- the embodiment according to FIG. 79 substantially corresponds to the embodiment according to FIG. 49, but (only) only one elevation 36 arranged one behind the other in the longitudinal direction of the shaft is provided.
- the various embodiments of the stamped-embossed connection may preferably be made by double-printing methods.
- a wire coming from a wire bundle is preferably guided by a feeder of the production device through a wire straightener and can then be inserted in a directional state into a shear stage. Preferably, it is sheared in the shear stage to the required length.
- the wire portion with a gripper now placed in a die and over be inserted and preformed a Vorstaucher. Even more preferably, the workpiece can be finished with another stamp (Fertigstaucher). After the forming process, the finished workpiece (or the punching embossment) can be pushed out of the die or the punch by an ejector pin and, if necessary, conveyed to a discharge belt.
- a multi-stage conversion can also take place.
- the wire is preferably inserted into the manufacturing apparatus after straightening with pick rollers.
- this blank is sheared to a desired length.
- the sheared section is brought with a transport system in a first forming station. After the forming has taken place in the first forming station, the blank is returned to the transport system by means of an ejector pin and transported to a next station. This process can be repeated until the workpiece has passed (all) forming stations. Finally, the workpiece can be conveyed to a discharge belt.
- the embodiments according to FIGS. 36 to 79 can be produced with a segmented matrix.
- a segmented matrix allows the structuring of a surface with closed segments. If the segments are open, the punching embossing can be particularly easily removed (ejected). This is particularly advantageous in the production of undercuts or grooves.
- Pressing jaws, axial longitudinal webs 31 can be formed in a synergistic manner.
- the adjoining edges of adjacent segments or pressing jaws facing the trainee rivet can be chamfered accordingly so as to enable material flow into the chamfered region between the pressing jaws and ultimately to predetermine the cross-sectional geometry of the longitudinal webs 31 by the formation of the chamfering.
- the material flow, which is usually perceived as detrimental when using segmented matrices, into the gap between the pressing jaws can be used here as a synergistic advantage for forming the longitudinal webs 31.
- FIGS. 80a to 80d illustrate a first possible production method of a stamped embossing rivet in cold forming technology.
- the punch embossment proposed in the present invention may preferably be formed from metal, in particular from steel or aluminum, from a metal which is well suited for cold-forming machining, on the one hand, and the later rivet, on the other hand - Process ensures desired properties, namely on the one hand, the required punching of the components and on the other hand to ensure a secure and durable rivet.
- a metal instead of a metal, to consider other materials which can be plastically deformed using cold forming technology and nevertheless have the abovementioned properties for the riveting process.
- cast materials can be used, for example, die-cast (in particular metal diecasting), and / or sintered materials.
- the method proposed in FIGS. 80a to 80d proceeds from a cylindrical piece of material, which may for example be in the form of a wire section 21 and has a first end face 22 and a second end face 23 (FIG. 80a).
- a second method step namely a setting process
- a first cold-forming deformation on the end faces 22 and 23 made (Fig 80b).
- the later the rivet head 14 forming end face 22 is in this case provided centrally with a countersink with an extremely flat angle and at the same time peripherally with a circumferential rounding 26.
- the later the punching edge 18 comprehensive end of the punching embossing rivet is acted upon so that at the second end face 23 centrally a bead 24 is formed, but just the later the punching edge 18 forming edge portions are initially allowed to stand.
- a pre-upsetting occurs (FIG. 80c).
- the rivet head 14 is already formed with the desired head-like extension 20.
- an enlargement of the diameter of the rivet shank 15 in a section facing the rivet head 14 is permitted by upsetting in the longitudinal direction, so that a step 28 is formed on the cylinder jacket of the rivet shank 15.
- this step 28 can already define the upper groove side surface as well as the groove bottom of the shank groove 16 if a shank groove 16 is to be formed at all.
- the rivet foot 29 is widened (FIG. 80d).
- the blank When expanding the Nietfußes the blank is further compressed in the axial direction, so that the supply to the second end face 23 introduced bead 24 completely or almost completely disappears and at the same time in the region of the Nietfußes 29 material is compacted on the one hand and on the other hand flows to the outside to the Nietfuß 29th formed with well-defined punching edge 18, wherein the punching edge 18 should have as accurately as possible a diameter corresponding to the diameter of the rivet shank 15 above the step 28, thus a punched embossment is created, apart from the head-like extension 20 and possibly provided Shaft 16 has a largely constant rivet diameter.
- the process described above can be carried out in a continuous working process on a double-pressure or multi-stage press, thus completely in cold forming.
- FIG. 81a the production according to the invention of a stamped embossing rivet with a plurality of shank grooves 16 according to a first variant of the method is shown, wherein the sequence largely corresponds to the procedure already explained with reference to FIGS. 80a to 80d, so that to avoid repetition can be referred to.
- a cylindrical material section which may be present concretely as a wire section 23, is assumed (FIG. 81 a).
- the end faces 22, 23 of the wire section are preformed to reduce any irregularities present (FIG. 81d).
- extrusion is performed while reducing the axial length and increasing the diameter of the rivet shank 15 (FIG. 81c).
- finishing is done in a segmented die, wherein on the one hand the majority of the shank grooves 16 and on the other hand the rivet foot 29 are formed with the punching edge 18 in its final shape (FIG. 81d).
- FIG. 82 shows an embodiment of a punched embossment in a side view.
- the punch embossment shown here can be used in particular (but not exclusively) for processing at least one fiber composite plastic component and / or one magnesium component (magnesium alloy component).
- the punching embossment according to FIG. 82 has (a plurality of, specifically at least four) ribs 51.
- the rivet head 14 of the punching embossing rivet shown in FIG. 82 is (substantially) cylindrically shaped, wherein a rivet head end is chamfered and thus has a (shorter in comparison) frustoconical portion.
- the ribs 51 allow as Fiber retaining ribs, as already described in the introduction, in a particularly favorable manner, the processing of a fiber composite plastic.
- a material reduction 52 is formed.
- This material reduction 52 is preferably (as shown in FIG. 82) in combination with at least one circumferential groove and / or a circumferential rib 51 before.
- material reduction 52 is basically one
- the material reduction 52 can therefore also be provided in a stamped embossing rivet which has no grooves and / or ribs.
- the (dashed) material reduction 52 has a triangular cross-section.
- a first embodiment of the material reduction 52 can be seen in Fig. 83, which shows a view of the Nietfußes 29 from below.
- the material reduction 52 is formed here as a conical recess.
- a second embodiment of the material reduction 52 can be seen in Fig. 83, which shows a view of the Nietfußes 29 from below.
- the material reduction 52 is formed here as a conical recess.
- a second embodiment of the material reduction 52 can be seen in Fig. 83, which shows a view of the Nietfußes 29 from below.
- the material reduction 52 is formed here as a conical recess.
- a second embodiment of the material reduction 52 is formed here as a conical recess.
- Material reduction 52 can be seen in Fig. 84, which also shows a view of the Nietfuß 29 from below.
- the material reduction 52 is designed here as a groove or recess extending over the entire diameter of the rivet foot 29 (preferably triangular in cross section).
- Material reduction 52 particularly in connection with the processing of fiber composite plastics advantageous.
- a punched embossment is proposed, which allows a safe and non-destructive machining of fiber composite plastics (or magnesium or magnesium alloys).
Abstract
Description
Claims
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DE112011104936T DE112011104936A5 (de) | 2011-02-22 | 2011-06-10 | Stanzstauchniet |
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PCT/EP2011/052624 WO2012059244A1 (de) | 2010-11-03 | 2011-02-22 | Stanz-prägeniet |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2638987A1 (de) * | 2012-03-16 | 2013-09-18 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und Vorrichtung zum Fügen von Fügepartnern durch einen Stanzniet |
EP2873473A1 (de) * | 2013-11-06 | 2015-05-20 | Profil Verbindungstechnik GmbH & Co. KG | Verfahren zur Verbindung von Blechmetallteilen und Verbundwerkstoffteilen und Komponentenanordnung |
DE102016111616A1 (de) * | 2016-06-24 | 2017-12-28 | Tox Pressotechnik Gmbh & Co. Kg | Vorrichtung und Verfahren zum Setzen eines Fügeelements an einem Werkstück oder zum Durchsetzfügen des Werkstücks |
CN109373566A (zh) * | 2018-10-25 | 2019-02-22 | 广东万家乐燃气具有限公司 | 一种燃烧器、燃烧器的组装方法及热水器 |
DE102018128455A1 (de) | 2018-11-13 | 2020-05-14 | Böllhoff Verbindungstechnik GmbH | Vollstanzniet |
US20210162486A1 (en) * | 2018-08-03 | 2021-06-03 | Atlas Copco Ias Uk Limited | Method of forming a riveted joint |
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EP1054169A2 (de) * | 1999-05-21 | 2000-11-22 | Kerb-Konus-Vertriebs-GmbH | Stanz-Prägeniet |
GB2362935A (en) * | 2000-05-31 | 2001-12-05 | Fukui Byora Co Ltd | Aluminium rivet |
DE20300533U1 (de) | 2003-01-14 | 2004-05-19 | Kerb-Konus-Vertriebs-Gmbh | Stanz-Prägeniet |
DE202009017864U1 (de) * | 2009-11-13 | 2010-08-12 | Kerb-Konus-Vertriebs-Gmbh | Stanz-Prägeniet |
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EP2873473A1 (de) * | 2013-11-06 | 2015-05-20 | Profil Verbindungstechnik GmbH & Co. KG | Verfahren zur Verbindung von Blechmetallteilen und Verbundwerkstoffteilen und Komponentenanordnung |
CN104624822A (zh) * | 2013-11-06 | 2015-05-20 | 形状连接技术有限公司及两合公司 | 用于连接钣金件的方法、零件总成及置放头和模扣 |
US9926963B2 (en) | 2013-11-06 | 2018-03-27 | Profil Verbindungstechnik Gmbh & Co. Kg | Method for the connection of sheet metal parts and component assembly as well as setting head and die button |
US10208782B2 (en) | 2013-11-06 | 2019-02-19 | Profil Verbindungstechnik Gmbh & Co. Kg | Method for the connection of sheet metal parts and component assembly as well as setting head and die button |
DE102016111616A1 (de) * | 2016-06-24 | 2017-12-28 | Tox Pressotechnik Gmbh & Co. Kg | Vorrichtung und Verfahren zum Setzen eines Fügeelements an einem Werkstück oder zum Durchsetzfügen des Werkstücks |
US20210162486A1 (en) * | 2018-08-03 | 2021-06-03 | Atlas Copco Ias Uk Limited | Method of forming a riveted joint |
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CN109373566A (zh) * | 2018-10-25 | 2019-02-22 | 广东万家乐燃气具有限公司 | 一种燃烧器、燃烧器的组装方法及热水器 |
CN109373566B (zh) * | 2018-10-25 | 2023-10-10 | 广东万家乐燃气具有限公司 | 一种燃烧器、燃烧器的组装方法及热水器 |
DE102018128455A1 (de) | 2018-11-13 | 2020-05-14 | Böllhoff Verbindungstechnik GmbH | Vollstanzniet |
WO2020099203A1 (de) | 2018-11-13 | 2020-05-22 | Böllhoff Verbindungstechnik GmbH | Vollstanzniet |
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