EP2842653B1 - Tool and method for the production of stamped parts - Google Patents

Tool and method for the production of stamped parts Download PDF

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Publication number
EP2842653B1
EP2842653B1 EP13004190.8A EP13004190A EP2842653B1 EP 2842653 B1 EP2842653 B1 EP 2842653B1 EP 13004190 A EP13004190 A EP 13004190A EP 2842653 B1 EP2842653 B1 EP 2842653B1
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EP
European Patent Office
Prior art keywords
embossing
tool according
bell
die part
blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP13004190.8A
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German (de)
French (fr)
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EP2842653A1 (en
Inventor
Andreas Marti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Feintool International Holding AG
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Feintool International Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Feintool International Holding AG filed Critical Feintool International Holding AG
Priority to EP13004190.8A priority Critical patent/EP2842653B1/en
Priority to JP2014169069A priority patent/JP6472190B2/en
Priority to US14/467,483 priority patent/US9669448B2/en
Priority to KR1020140111663A priority patent/KR102226591B1/en
Priority to CN201410431402.7A priority patent/CN104416056B/en
Publication of EP2842653A1 publication Critical patent/EP2842653A1/en
Application granted granted Critical
Publication of EP2842653B1 publication Critical patent/EP2842653B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
    • B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/005—Edge deburring or smoothing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/28—Making other particular articles wheels or the like gear wheels

Definitions

  • the invention relates to a tool for producing stamped parts, in particular slats, with an upper part and a lower part, which at least one punching or fine blanking stage for cutting the inner and outer contour of a lamella blank and at least one corrugation and embossing stage for waves of the lamella blank and embossing form the burrs formed during cutting on the lamella blank, wherein the corrugation and embossing stage is divided into a die base and a die shell.
  • the invention further relates to a method for producing stamped parts, in particular slats, in which the outer and inner contour of a slat blank in a first method step from a strip of tape within a tool comprising a top and bottom part in cut a punching or fineblanking, the finely cut lamellar blank is moved by a cross slide after opening the tool in a corrugation and embossing stage in which the lamella blank receives after closing the tool in a second process step by forming on a die top and a die base a wave profile and the burrs produced during fineblanking are embossed on the lamella, wherein the first and the second method step are carried out in one stroke.
  • a method and an apparatus for producing corrugated fins in two process steps wherein a workpiece is punched or finely cut in the first process step, transported between the first and the second process step and corrugated in the second process step and simultaneously deburred.
  • the process is carried out with a two-stage tool whose first stage is designed as a fineblanking stage and the second stage as embossing and corrugation stage.
  • fineblanking typically creates a feeder, which increases in particular with decreasing corner radius and increasing sheet thickness.
  • the insertion depth can be approx. 20% and the feed width about 30% of the sheet thickness or more (see DIN 3345, fineblanking, Aug.
  • the present invention seeks to provide a tool and a method for producing corrugated fins, with which it It is possible to increase the dimensional accuracy and sharpness of the external teeth of the corrugated fins while reducing costs.
  • the solution according to the invention is based on the knowledge that the waves do not run simultaneously with respect to the embossing of the cutting burr, but with a time lead in order to fix and not influence the outer and inner contours of the blade during the corrugation in order to ensure the dimensional and dimensional accuracy.
  • the upper die part comprises an embossing bell, a scraper ring provided with an embossing surface with a wave profile on the embossing surface and an inner mold embossing (as well as the die lower part a Subgeambos with a wave profile on its embossing surface, wherein the embossing bell and the inner mold embossing each with an embossing shoulder are provided, which are arranged opposite to the wave profile of the scraper ring in the stroke direction so that they can detect the burrs after the waves, so that the waves leading the ridge embossing and the outer and inner contour of the lamella not their position, but their shape on the ridge side after which waves can change.
  • the embossing bell for fixing the outer contour of the lamellar blank is annular and the outer contour completely encloses, and that the inner mold embossing is arranged supportingly against the inner contour.
  • the outer and inner contour are thus fixed as clamped, so that the outer and inner contour of the slat blank can not be influenced by the forming operation.
  • the scraper ring is vertically supported on the inner wall of the embossing bell and on the outer wall of the mecanical spagers, so that the embossing surface of the scraper ring is guided in a defined position to the slat blank safely.
  • the embossing bell on its inner wall on a profiling, which is adapted to the profile, in particular toothing of the outer contour of the fin blank.
  • a profiling which is adapted to the profile, in particular toothing of the outer contour of the fin blank.
  • the stamping ammunition in the lower die part is annular and assigned to the scraper ring in the die upper part, wherein a filler for the power transmission and support is arranged in the interior of the stamping team.
  • the embossing shoulder is arranged on the inner wall of the embossing bell and the embossing shoulder of the mecanical plaitis on the outer wall, the embossing shoulders have a position and shape, the size and shape of the Thomasgrates, the thickness of the lamella blanks and the corrugation profile of the embossing surfaces of the wiper ring and Thageambos is tuned. This ensures that the waves can lead the ridge embossing on the ridge side of the lamella blank.
  • the lower die part further comprises a vertically guided in a Matrizenein stamped, adapted to the embossing bell intermediate ring whose annular surface forms a seat for the embossing bell in the closed state of Gesenkoberteil and die lower part and the inner wall is adapted to the finely cut outer contour of the fin blank.
  • the slat blank is thus exactly in a defined position between the embossing surfaces of the scraper ring and procurgeambos, the outer and inner contour are fixed by the embossing bell and the inner mold embossing.
  • the scraper ring, embossing team, embossing bell and internal form embossing machine form the die in which the forming operations take place.
  • the embossing bell is operatively connected via an upper pressure plate and the inner mold embosser via a further pressure plate with a fixed upper block of the upper part for performing all operations.
  • the upper block can of course also be carried out liftable.
  • the lower block is formed correspondingly stationary.
  • the scraper ring which at the same time performs a forming function in a further advantageous embodiment of the invention, is operatively connected via a pressure pin and an upper ring plate with an auxiliary hydraulic for stripping the finished formed lamella.
  • the embossing surfaces of the embossing and Abstreifrings coordinated with each different embossing profiles, such as a wave profile with uniformly shaped wave crests and troughs, or an irregular wave profile of at least two waves with differently shaped and spaced wave crests and wave troughs, so that slats with different corrugations can be produced.
  • the object is further achieved by a method that takes place within the corrugation and embossing stage at the same time with the waves of the lamella blank fixing the outer and inner contour to maintain their position and shape during the wave, the waves leading the ridge embossing and the outer and inner contour of the slat not their location, but can change their shape on the ridge side by the subsequent embossing.
  • the upper and lower sides of the slat blank are corrugated by an embossing boss belonging to the lower part of the die and a scraper ring belonging to the upper part of the die, thus perceiving both a forming function and a scraper function for the corrugated fin.
  • the method according to the invention can be used as embossing surfaces for anvil and scraper different embossed profiles, such as a wave profile with uniformly shaped wave crests and troughs, or an irregular wave profile of at least two waves with differently shaped and spaced wave crests and troughs used, so that the inventive Method can be variably adapted to different waveforms and fin dimensions.
  • the Fig. 1a and 1b shows a commercially available corrugated outer shell 1, which has an outer contour 2 with a Has toothing 3 and a circular inner contour 4, wherein the outer plate 1 is provided with a corrugation 5 (see Fig. 1b ).
  • the outer plate 1 has, for example, a thickness D of 1.8 mm and is made of steel.
  • the outer disk 1 is to be produced with a fine cutting tool 6, which comprises an upper part 7 and a lower part 8, which, like Fig. 2 and 3 show at least one fine cutting stage 9 and at least one corrugation and embossing stage 10 form.
  • the upper part 7 is fixed with its upper block 11 fixed to a machine table, not shown, and the lower part 8 with its lower block 12 hubbeweglich on a plunger of a press, so that the lamella blank 13 from bottom to top -that in the direction of top part of a Strip strip 14 is finely cut in the fine cutting stage 9, which corresponds to the known prior art and therefore need not be explained in more detail.
  • the burrs 15 on the slat blank 13 protrude at the foundedachir 2 and the inner contour 3 of the slat blank 13 perpendicular to (see also Fig. 14c ).
  • the finely cut lamellar blank 13 is detected after ejection from the fine cutting stage 9 by a cross slide 16, transported with this in the corrugation and embossing stage 10 and stored there in precise position before the waves.
  • the Fig. 3 shows the basic structure of the embossing and wave stage 10 in the closed state.
  • the embossing and wave stage 10 has a Gesenkoberteil 17 and Die lower part 18.
  • To Gesenkoberteil 17 include an annular embossing bell 19, an annular scraper ring 20 and an inner mold embossment 21.
  • the embossing bell 19 is fixedly secured to an upper embossing plate 22, which in turn is fixed to the upper block 11.
  • the scraper ring 20 is supported on the inner wall 23 of the embossing bell 19 vertically and on the upper embossing pressure plate 22 horizontally, wherein the scraper ring 20 on its the embossing plate 22 side facing 24 via an actuatable by an upper auxiliary hydraulic 25 and a ring plate 26 pressure pin 27 is a vertical Can perform relative movement relative to the stamping bell 19.
  • pressure pin 27 is a vertical Can perform relative movement relative to the stamping bell 19.
  • the annular scraper ring 20 of the inner mold embossment 21 is inserted, which guides the scraper ring 20 vertically on its outer wall 28 and supported.
  • On the inner mold embossment 21 is arranged in the annular scraper ring 20 separate pressure plate 29, which is operatively connected to the power transmission with the embossing pressure plate 22.
  • the die bottom 18 is formed by an annular die enclosure 30, an intermediate ring 31, an annular die 32 and a filler 33.
  • the die skirt 30 is attached to the lower block 12.
  • the intermediate ring 31, the procurgeambos 32 and the filling piece 33 rest on a lower embossing pressure plate 34, which in turn is connected via a lower auxiliary hydraulic 35 in operative connection.
  • Fig. 4 is shown enlarged form the embossing bell 19, the wiper ring 20 and the Inner shaped embossment 21 of the die upper part 17 with the intermediate ring 31, the embossing team 32 and the filling piece 33 of the die lower part 18 each active pairs with respect to the slat blank thirteenth
  • the lamellar blank 13 is enclosed on its outer contour 2 of the stamping bell 19 and on its inner contour 4 of mecanicumformlessnessg 21, so that during the shaft of the lamellar blank 13 between the scraper ring 20 and 30 refgeambos no distortion on the lamella blank 13 can be adjusted.
  • the Fig. 5 to 10 illustrate the structure of the Gesenkoberteils 17th It can clearly be seen that the inner wall 23 of the embossing bell 19 and the outer wall 36a of the scraper ring 20 are matched to one another and together have a contour K which corresponds to the outer contour 2 of the slat blank 13. In the annular scraper ring 20 of the inner mold embossment 21 is arranged vertically guided.
  • the Fig. 6 and 7 represent a perspective view of the embossing bell 19 and a section along the line AA of Fig.
  • the stamping bell 19 has on its formed by the lower seat surface 36 and the inner wall 23 centering edge 37 an embossing shoulder 38, the depth T on the size and shape of the towering ridge on the outer contour 2, the thickness D of the outer plate 1 and the height h the wave crest of the wave profiles is tuned.
  • the scraper ring 2 is shown, which faces a wave profile 39 on its embossing team 32 Embossed surface 40 has. This wave profile 39 is tuned to the desired curl of the outer plate 1.
  • the inner form embossment 21 has a cylindrical shape and is adapted in its contour to the inner contour 4 of the lamella blank 13 (see Fig. 9 ).
  • Fig. 9 One recognizes Fig.
  • the inner form embossment 21 has an embossing shoulder 42 whose depth t corresponds to the dimension and shape of the ridge 15, the thickness D of the outer lamella 1 and the height h of the Wave profile is tuned.
  • the die lower part 18 is in Fig. 11 shown without matrix border.
  • the inner wall 43 of the intermediate ring 31 and the outer wall 44 of the embossing team 32 have a coordinated contour K which corresponds to the outer contour 3 of the lamella blank 13.
  • the stamping team 32 has - like Fig. 12 shows on its embossing surface 45, a wave profile 46, which is adapted to the desired curl of the outer plate 1.
  • Examples of wave profiles 39 and 46 on the scraper ring 20 and Regeambos 32 are as settlement in the Fig. 13a to 13c according to section line CC of Fig. 11 shown.
  • evenly or unevenly distributed corrugations such as 3-fold waves, 4-fold waves or 2 + 2-fold waves can be provided on the circumference of the slat blank 13.
  • Fig. 14a has the Cross slide 16 the slat blank 13 placed on the procurgeambos 32. Due to the centering edge 37 of the embossing bell 19, a centering on the outer contour 2 of the lamella blank 13 and the centering 41 centering on the inner contour 4, so that the lamella blank 13 is positioned exactly on the procurgeambos 19 for the clamping state (see Fig. 14b ).
  • the Fig. 14c shows the state in which the wave profile 39 of the embossing surface 40 of the scraper ring 20 with its crests 47 has reached the lamellar blank 13 by the lifting movement of the embossing team 32.
  • the wave forming process on the lamellar blank sets in and is completed before the embossing shoulder 38 or 42 of the embossing bell 19 and the mecanicform Georgiagers 21 can grasp the cutting ridge 15 on the outer contour 2 and inner contour 4.
  • the embossing process is completed Fig. 14d has the wiper ring 20, the corrugated and ridge embossed outer plate 1 stripped by the upper auxiliary hydraulic 25 of the embossing shoulders 38 and 42.
  • the outer disk 1 can be transported by opening the tool by means of the cross slide 16 on the tool.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Die Erfindung betrifft ein Werkzeug zum Herstellen von Stanzteilen, insbesondere Lamellen, mit einem Oberteil und einem Unterteil, welche mindestens eine Stanz- oder Feinschneidstufe zum Schneiden der Innen- und Außenkontur eines Lamellenrohlings und mindestens eine Well- und Prägestufe zum Wellen des Lamellenrohlings und zum Verprägen der beim Schneiden entstandenen Grate am Lamellenrohling bilden, wobei die Well- und Prägestufe in ein Gesenkunterteil und ein Gesenkoberteil aufgeteilt ist.The invention relates to a tool for producing stamped parts, in particular slats, with an upper part and a lower part, which at least one punching or fine blanking stage for cutting the inner and outer contour of a lamella blank and at least one corrugation and embossing stage for waves of the lamella blank and embossing form the burrs formed during cutting on the lamella blank, wherein the corrugation and embossing stage is divided into a die base and a die shell.

Die Erfindung betrifft weiterhin ein Verfahren zum Herstellen von Stanzteilen, insbesondere Lamellen, bei dem die Außen- und Innenkontur eines Lamellenrohlings in einem ersten Verfahrensschritt aus einem Bandstreifen innerhalb eines ein Ober- und Unterteil umfassenden Werkzeuges in einer Stanz- oder Feinschneidstufe geschnitten, der feingeschnittene Lamellenrohling durch einen Querschieber nach Öffnen des Werkzeugs in eine Well- und Prägestufe verbracht wird, in der der Lamellenrohling nach Schließen des Werkzeugs in einem zweiten Verfahrensschritt durch Umformen an einem Gesenkoberteil und einem Gesenkunterteil ein Wellenprofil erhält und die beim Feinschneiden entstandenen Grate an der Lamelle verprägt werden, wobei der erste und der zweite Verfahrensschritt in einem Hub durchgeführt werden.The invention further relates to a method for producing stamped parts, in particular slats, in which the outer and inner contour of a slat blank in a first method step from a strip of tape within a tool comprising a top and bottom part in cut a punching or fineblanking, the finely cut lamellar blank is moved by a cross slide after opening the tool in a corrugation and embossing stage in which the lamella blank receives after closing the tool in a second process step by forming on a die top and a die base a wave profile and the burrs produced during fineblanking are embossed on the lamella, wherein the first and the second method step are carried out in one stroke.

Stand der TechnikState of the art

Aus der DE 10 2010 028 280 A1 ist ein Verfahren und eine Vorrichtung zur Herstellung von gewellten Lamellen in zwei Verfahrensschritten bekannt, wobei ein Werkstück in dem ersten Verfahrensschritt gestanzt oder feingeschnitten, zwischen dem ersten und dem zweiten Verfahrensschritt transportiert und in dem zweiten Verfahrensschritt gewellt und gleichzeitig entgratet wird. Das Verfahren wird mit einem zweistufigen Werkzeug ausgeführt, dessen erste Stufe als Feinschneidstufe und dessen zweite Stufe als Präge- und Wellstufe ausgebildet sind.
Beim Feinschneiden entsteht typischerweise ein Einzug, der insbesondere mit kleiner werdenden Eckenradius und zunehmender Blechdicke zunimmt. Die Einzugstiefe kann rd. 20% und die Einzugsbreite etwa 30% der Blechdicke oder mehr betragen (siehe DIN 3345, Feinschneiden, Aug. 1980), so dass eine fehlende Scharfkantigkeit an der Außenverzahnung der Lamellen zu einer Einschränkung der Teilefunktion führen kann.
Außerdem führt die Umformung des dünnen und ebenen Lamellenrohlings in der Wellstufe zu einem Verzug, der die Formentreue der Außen- und Innenkontur, vor allem die Form- und Abmessungsgenauigkeit der Außenverzahnung der Lamelle beeinträchtigt, wodurch die Einbau- und Funktionseigenschaften nachteilig beeinflusst werden. Aufwändige Nacharbeiten sind dann die Folge.From the DE 10 2010 028 280 A1 a method and an apparatus for producing corrugated fins in two process steps is known, wherein a workpiece is punched or finely cut in the first process step, transported between the first and the second process step and corrugated in the second process step and simultaneously deburred. The process is carried out with a two-stage tool whose first stage is designed as a fineblanking stage and the second stage as embossing and corrugation stage.
When fineblanking typically creates a feeder, which increases in particular with decreasing corner radius and increasing sheet thickness. The insertion depth can be approx. 20% and the feed width about 30% of the sheet thickness or more (see DIN 3345, fineblanking, Aug. 1980), so that a lack of sharp edges on the outer teeth of the Slats can lead to a limitation of the part function.
In addition, the deformation of the thin and flat blade blank in the Well stage leads to a delay that affects the dimensional accuracy of the outer and inner contour, especially the shape and dimensional accuracy of the outer teeth of the blade, whereby the installation and functional properties are adversely affected. Elaborate rework is then the result.

Des Weiteren ist in der DE 196 08 551 A1 ein Verfahren zur Herstellung von Stanzteilen, insbesondere ebenen Lamellen beschrieben, bei dem in einem ersten Verfahrensschritt das Werkstück innerhalb einer Vorrichtung aus dem Rohmaterial gestanzt und nach dem Stanzen mittels einer ebenfalls in der Vorrichtung untergebrachten Transferzange in eine Prägestufe verbracht wird, in der der Grat an der Lamelle verprägt wird. Dieser Stand der Technik hat den Nachteil, dass die gratverprägte Lamelle in einer zusätzlichen Bearbeitungsstufe -wie beispielsweise in der EP 1 128 081 B1 beschriebengewellt werden muss, was den Aufwand und die Kosten in der Herstellung erheblich erhöht.Furthermore, in the DE 196 08 551 A1 a method for producing stamped parts, in particular flat lamellae described in which in a first method step, the workpiece is punched within a device from the raw material and spent after punching by means of a likewise housed in the device transfer tongs in an embossing stage, in the burr the lamella is embossed. This prior art has the disadvantage that the burr embossed blade in an additional processing stage-such as in the EP 1 128 081 B1 must be waved, which significantly increases the effort and cost in manufacturing.

Aufgabenstellungtask

Bei diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Werkzeug und ein Verfahren zum Herstellen gewellter Lamellen bereitzustellen, mit denen es möglich wird, die Form- und Abmessungsgenauigkeit sowie Scharfkantigkeit der Außenverzahnung der gewellten Lamellen unter gleichzeitiger Reduktion der Kosten zu erhöhen.In this prior art, the present invention seeks to provide a tool and a method for producing corrugated fins, with which it It is possible to increase the dimensional accuracy and sharpness of the external teeth of the corrugated fins while reducing costs.

Diese Aufgabe wird durch ein Werkzeug der eingangs genannten Gattung mit den Merkmalen des Anspruchs 1 und durch ein Verfahren mit Merkmalen des Anspruchs 14 gelöst.This object is achieved by a tool of the aforementioned type with the features of claim 1 and by a method having features of claim 14.

Vorteilhafte Ausgestaltungen des Werkzeugs und des Verfahrens sind den Unteransprüchen entnehmbar.Advantageous embodiments of the tool and the method are the dependent claims.

Die erfindungsgemäße Lösung geht von der Erkenntnis aus, das Wellen gegenüber dem Verprägen des Schnittgrates nicht gleichzeitig, sondern zeitlich voreilend auszuführen, um die Außen- und Innenkontur der Lamelle während des Wellens zwecks Gewährleistung der Form- und Abmessungstreue zu fixieren und nicht zu beeinflussen.The solution according to the invention is based on the knowledge that the waves do not run simultaneously with respect to the embossing of the cutting burr, but with a time lead in order to fix and not influence the outer and inner contours of the blade during the corrugation in order to ensure the dimensional and dimensional accuracy.

Dies wird dadurch erreicht, dass das Gesenkoberteil eine Prägeglocke, einen mit einer Prägefläche versehenen Abstreifring mit einem Wellenprofil auf der Prägefläche und einen Innenformpräger (sowie das Gesenkunterteil einen Prägeambos mit einem Wellenprofil auf seiner Prägefläche umfasst, wobei die Prägeglocke und der Innenformpräger jeweils mit einer Prägeschulter versehen sind, die gegenüber dem Wellenprofil des Abstreifrings in Hubrichtung so angeordnet sind, dass diese die Schnittgrate nach dem Wellen erfassen kann, so dass das Wellen dem Gratverprägen voreilt und die Außen- und Innenkontur der Lamelle ihre Lage nicht, aber ihre Form an der Gratseite nach dem Wellen ändern können.This is achieved in that the upper die part comprises an embossing bell, a scraper ring provided with an embossing surface with a wave profile on the embossing surface and an inner mold embossing (as well as the die lower part a Prägeambos with a wave profile on its embossing surface, wherein the embossing bell and the inner mold embossing each with an embossing shoulder are provided, which are arranged opposite to the wave profile of the scraper ring in the stroke direction so that they can detect the burrs after the waves, so that the waves leading the ridge embossing and the outer and inner contour of the lamella not their position, but their shape on the ridge side after which waves can change.

Von besonderem Vorteil ist, dass die Prägeglocke zum Fixieren der Außenkontur des Lamellenrohlings ringförmig ausgebildet ist und die Außenkontur völlig umschließt, und dass der Innenformpräger gegen die Innenkontur abstützend angeordnet ist.
Die Außen- und Innenkontur liegen somit wie eingespannt fest, so dass die Außen- und Innenkontur des Lamellenrohlings durch die Umformoperation nicht beeinflusst werden können.It is particularly advantageous that the embossing bell for fixing the outer contour of the lamellar blank is annular and the outer contour completely encloses, and that the inner mold embossing is arranged supportingly against the inner contour.
The outer and inner contour are thus fixed as clamped, so that the outer and inner contour of the slat blank can not be influenced by the forming operation.

Nach einer bevorzugten Ausführungsvariante des erfindungsgemäßen Werkzeugs ist der Abstreifring an der Innenwand der Prägeglocke und an Außenwand des Innenformprägers vertikal abgestützt, so dass die Prägefläche des Abstreifrings in definierter Lage zum Lamellenrohling sicher geführt ist.According to a preferred embodiment of the tool according to the invention, the scraper ring is vertically supported on the inner wall of the embossing bell and on the outer wall of the Innenformprägers, so that the embossing surface of the scraper ring is guided in a defined position to the slat blank safely.

In einer weiteren Ausgestaltung des erfindungsgemäßen Werkzeugs weist die Prägeglocke an ihrer Innenwand eine Profilierung auf, die an das Profil, insbesondere Verzahnung der Außenkontur des Lamellenrohlings angepasst ist. Dies ermöglicht eine vertikale Führung des Abstreifrings und zugleich eine radiale Sicherung der Außenkontur gegen ein Verdrehen des Lamellenrohlings bei der Umformoperation.
In Weiterbildung der Erfindung ist der Innenformpräger an seiner Außenwand an die Innenkontur des Lamellenrohlings angepasst, so dass der Lamellenrohling ebenso gegen ein radiales Verdrehen gesichert ist.In a further embodiment of the tool according to the invention, the embossing bell on its inner wall on a profiling, which is adapted to the profile, in particular toothing of the outer contour of the fin blank. This allows a vertical guidance of the scraper ring and at the same time a radial securing of the outer contour against a rotation of the slat blank in the forming operation.
In a further development of the invention, the inner mold embosser is adapted on its outer wall to the inner contour of the slat blank, so that the slat blank is also secured against radial rotation.

In weiterer Ausgestaltung des erfindungsgemäßen Werkzeugs ist der Prägeambos im Gesenkunterteil ringförmig ausgebildet und dem Abstreifring im Gesenkoberteil zugeordnet, wobei im Innenraum des Prägeambos ein Füllstück für die Kraftübertragung und Abstützung angeordnet ist.In a further embodiment of the tool according to the invention, the stamping ammunition in the lower die part is annular and assigned to the scraper ring in the die upper part, wherein a filler for the power transmission and support is arranged in the interior of the stamping team.

Von wesentlicher Bedeutung für die Erfindung ist, dass die Prägeschulter an der Innenwand der Prägeglocke und die Prägeschulter des Innenformprägers an dessen Außenwand angeordnet ist, wobei die Prägeschultern eine Lage und Form haben, die an die Größe und Form des Schnittgrates, die Dicke des Lamellenrohlings und das Wellenprofil der Prägeflächen von Abstreifring und Prägeambos abgestimmt ist. Dies stellt sicher, dass das Wellen dem Gratverprägen auf der Gratseite des Lamellenrohlings voreilen kann.Of essential importance for the invention is that the embossing shoulder is arranged on the inner wall of the embossing bell and the embossing shoulder of the Innenformprägers on the outer wall, the embossing shoulders have a position and shape, the size and shape of the Schnittgrates, the thickness of the lamella blanks and the corrugation profile of the embossing surfaces of the wiper ring and Prägeambos is tuned. This ensures that the waves can lead the ridge embossing on the ridge side of the lamella blank.

Das Gesenkunterteil umfasst weiterhin einen in einer Matrizeneinfassung vertikal geführten, an die Prägeglocke angepassten Zwischenring, dessen Ringfläche einen Sitz für die Prägeglocke im geschlossenen Zustand von Gesenkoberteil und Gesenkunterteil bildet und dessen Innenwand an die feingeschnittene Außenkontur des Lamellenrohlings angepasst ist.
Der Lamellenrohling liegt somit exakt in einer definierten Lage zwischen den Prägeflächen von Abstreifring und Prägeambos, wobei die Außen- und Innenkontur durch die Prägeglocke und den Innenformpräger fixiert sind. Gewissermaßen bilden Abstreifring, Prägeambos, Prägeglocke und Innenformpräger das Gesenk, in dem die Umformoperationen stattfinden.The lower die part further comprises a vertically guided in a Matrizeneinfassung, adapted to the embossing bell intermediate ring whose annular surface forms a seat for the embossing bell in the closed state of Gesenkoberteil and die lower part and the inner wall is adapted to the finely cut outer contour of the fin blank.
The slat blank is thus exactly in a defined position between the embossing surfaces of the scraper ring and Prägeambos, the outer and inner contour are fixed by the embossing bell and the inner mold embossing. To a certain extent, the scraper ring, embossing team, embossing bell and internal form embossing machine form the die in which the forming operations take place.

Nach einer weiteren Ausführungsform des erfindungsgemäßen Werkzeugs ist die Prägeglocke über eine obere Druckplatte und der Innenformpräger über eine weitere Druckplatte mit einem festliegenden oberen Block des Oberteils zum Ausführen aller Operationen wirkverbunden.
Es versteht sich, dass der obere Block natürlich auch hubbeweglich ausgeführt werden kann. In einem solchen Fall wird der untere Block entsprechend ortsfest ausgebildet.
Der Abstreifring, der in einer weiteren vorteilhaften Ausbildung der Erfindung zugleich eine Umformfunktion wahrnimmt, ist über einen Druckbolzen und einer oberen Ringplatte mit einer Zusatzhydraulik zum Abstreifen der fertig umgeformten Lamelle wirkverbunden.According to another embodiment of the tool according to the invention, the embossing bell is operatively connected via an upper pressure plate and the inner mold embosser via a further pressure plate with a fixed upper block of the upper part for performing all operations.
It is understood that the upper block can of course also be carried out liftable. In such a case, the lower block is formed correspondingly stationary.
The scraper ring, which at the same time performs a forming function in a further advantageous embodiment of the invention, is operatively connected via a pressure pin and an upper ring plate with an auxiliary hydraulic for stripping the finished formed lamella.

Die Matrizeneinfassung, in der der Zwischenring und der Prägeambos über eine untere Druckplatte vertikal geführt und mit einer unteren Zusatzhydraulik wirkverbunden sind, liegt ortsfest am unteren, mit dem Pressenstößel verbundenen Block fest, so dass der Unterteil des Werkzeugs eine Hubbewegung zum Fixieren, Wellen und Verprägen des Lamellenrohlings ausführen kann.The Matrizeneinfassung, in which the intermediate ring and the Prägeambos vertically guided over a lower pressure plate and operatively connected to a lower auxiliary hydraulics, fixed to the lower, fixed to the press ram block fixed so that the lower part of the tool a lifting movement for fixing, waves and embossing of the slat blank can perform.

In weiterer Ausgestaltung des erfindungsgemäßen Werkzeugs können die Prägeflächen des Prägeamboss und Abstreifrings aufeinander abgestimmte unterschiedliche Prägeprofile, beispielsweise ein Wellenprofil mit gleichmäßig geformten Wellenbergen und Wellentälern, oder ein unregelmäßigen Wellenprofil aus mindestens zwei Wellen mit unterschiedlich geformten und beabstandeten Wellenbergen und Wellentälern aufweisen, so dass Lamellen mit unterschiedlichen Wellungen hergestellt werden können.In a further embodiment of the tool according to the invention, the embossing surfaces of the embossing and Abstreifrings coordinated with each different embossing profiles, such as a wave profile with uniformly shaped wave crests and troughs, or an irregular wave profile of at least two waves with differently shaped and spaced wave crests and wave troughs, so that slats with different corrugations can be produced.

Die Aufgabe wird weiterhin durch ein Verfahren gelöst, dass innerhalb der Well- und Prägestufe zeitgleich mit dem Wellen des Lamellenrohlings ein Fixieren der Außen- und Innenkontur zum Beibehalten ihrer Lage und Form während des Wellens erfolgt, wobei das Wellen dem Gratverprägen voreilt und die Außen- und Innenkontur der Lamelle ihre Lage nicht, aber ihre Form an der Gratseite durch das nachfolgende Verprägen ändern können.The object is further achieved by a method that takes place within the corrugation and embossing stage at the same time with the waves of the lamella blank fixing the outer and inner contour to maintain their position and shape during the wave, the waves leading the ridge embossing and the outer and inner contour of the slat not their location, but can change their shape on the ridge side by the subsequent embossing.

Von besonderem Vorteil ist, dass die Ober- und Unterseite des Lamellenrohlings durch einen zum Gesenkunterteil gehörenden Prägeamboss und einem zum Gesenkoberteil gehörenden Abstreifring gewellt wird, der damit sowohl eine Umformfunktion als auch eine Abstreiffunktion für die gewellte Lamelle wahrnimmt.It is particularly advantageous that the upper and lower sides of the slat blank are corrugated by an embossing boss belonging to the lower part of the die and a scraper ring belonging to the upper part of the die, thus perceiving both a forming function and a scraper function for the corrugated fin.

In weiterer Ausgestaltung des erfindungsgemäßen Verfahrens können als Prägeflächen für Amboss und Abstreifring unterschiedliche Prägeprofile, beispielsweise ein Wellenprofil mit gleichmäßig geformten Wellenbergen und Wellentälern, oder ein unregelmäßigen Wellenprofil aus mindestens zwei Wellen mit unterschiedlich geformten und beabstandeten Wellenbergen und Wellentälern zum Einsatz gelangen, so dass das erfindungsgemäße Verfahren variabel an verschiedene Wellenformen und Lamellenabmessungen angepasst werden kann.In a further embodiment of the method according to the invention can be used as embossing surfaces for anvil and scraper different embossed profiles, such as a wave profile with uniformly shaped wave crests and troughs, or an irregular wave profile of at least two waves with differently shaped and spaced wave crests and troughs used, so that the inventive Method can be variably adapted to different waveforms and fin dimensions.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die beigefügten Zeichnungen.Other advantages, features and details of Invention will become apparent from the following description with reference to the accompanying drawings.

Ausführungsbeispielembodiment

Die Erfindung soll nachstehend an am Beispiel der Herstellung einer Lamelle mit Außenverzahnung näher erläutert werden. Es versteht sich, dass durch die Erfindung ebenso Lamellen mit einer Innenverzahnung erfasst sind.The invention will be explained in more detail below using the example of the production of a blade with external teeth. It is understood that by the invention as well slats are covered with an internal toothing.

Es zeigenShow it

  • Fig. 1a und 1b eine perspektivische Ansicht und eine Seitenansicht einer handelsüblichen gewellten Außenlamelle, Fig. 1a and 1b a perspective view and a side view of a commercially available corrugated outer fin,
  • Fig. 2 eine beispielhafte Anordnung von Feinschneidstufe und Well- und Prägestufe in einem erfindungsgemäßen Werkzeug in perspektivischer Draufsicht, Fig. 2 an exemplary arrangement of fineblanking stage and corrugation and embossing stage in a tool according to the invention in a perspective plan view,
  • Fig. 3 einen schematische Schnittdarstellung des erfindungsgemäßen Werkzeugs in geschlossenem Zustand, Fig. 3 a schematic sectional view of the tool according to the invention in the closed state,
  • Fig. 4 eine vergrößerte Darstellung des Lamellenrohlings zwischen Prägeambos, Abstreifring, Prägeglocke und Innenformpräger als Einzelheit X der Fig. 3, Fig. 4 an enlarged view of the slat blank between Prägeambos, scraper, embossing bell and Innenformpräger as a detail X the Fig. 3 .
  • Fig. 5 eine perspektivische Ansicht des Gesenkoberteils des erfindungsgemäßen Werkzeugs, Fig. 5 a perspective view of the upper die part of the tool according to the invention,
  • Fig. 6 eine perspektivische Ansicht der Prägeglocke des erfindungsgemäßen Werkzeugs, Fig. 6 a perspective view of the embossing bell of the tool according to the invention,
  • Fig. 7 einen Schnitt entlang der Linie A-A in der Fig. 6, Fig. 7 a section along the line AA in the Fig. 6 .
  • Fig. 8 eine perspektivische Ansicht des Abstreifrings, Fig. 8 a perspective view of the scraper ring,
  • Fig. 9 eine perspektivische Ansicht des Innenformprägers, Fig. 9 a perspective view of the inner mold,
  • Fig. 10 einen Schnitt entlang der Linie B-B in der Fig. 9, Fig. 10 a section along the line BB in the Fig. 9 .
  • Fig. 11 eine perspektivische Ansicht des Gesenkunterteils, Fig. 11 a perspective view of the Gesenkunterteils,
  • Fig. 12 eine perspektivische Ansicht des Prägeambos, Fig. 12 a perspective view of the stamping team,
  • Fig. 13a bis 13c Varianten von Wellenprofilen in Darstellung einer Abwicklung gemäß Schnitt nach Linie C-C in Fig. 11 und Fig. 13a to 13c Variants of wave profiles in representation of a development according to section along line CC in Fig. 11 and
  • Fig. 14a bis 14d den Ablauf des erfindungsgemäßen Verfahrens in schematischer Darstellung. Fig. 14a to 14d the sequence of the method according to the invention in a schematic representation.

Die Fig. 1a und 1b zeigt eine handelsübliche gewellte Außenlammelle 1, die eine Außenkontur 2 mit einer Verzahnung 3 und eine kreisförmige Innenkontur 4 aufweist, wobei die Außenlamelle 1 mit einer Wellung 5 versehen ist (siehe Fig. 1b).
Die Außenlamelle 1 hat beispielsweise eine Dicke D von 1,8 mm und besteht aus Stahl.The Fig. 1a and 1b shows a commercially available corrugated outer shell 1, which has an outer contour 2 with a Has toothing 3 and a circular inner contour 4, wherein the outer plate 1 is provided with a corrugation 5 (see Fig. 1b ).
The outer plate 1 has, for example, a thickness D of 1.8 mm and is made of steel.

Die Außenlamelle 1 soll mit einem Feinschneidwerkzeug 6 hergestellt werden, das ein Oberteil 7 und ein Unterteil 8 umfasst, welche -wie Fig. 2 und 3 zeigenmindestens eine Feinschneidstufe 9 und mindestens einer Well- und Prägestufe 10 bilden.
Das Oberteil 7 ist mit seinem oberen Block 11 ortsfest an einem nicht dargestellten Maschinentisch und das Unterteil 8 mit seinem unteren Block 12 hubbeweglich an einem Stößel einer Presse festgelegt, so dass der Lamellenrohling 13 von unten nach oben -das heißt in Richtung Oberteil- aus einem Bandstreifen 14 in der Feinschneidstufe 9 feingeschnitten wird, die dem bekannten Stand der Technik entspricht und deshalb nicht näher erläutert zu werden braucht.
Die Schnittgrate 15 am Lamellenrohling 13 ragen an der Außenkontor 2 und der Innenkontur 3 des Lamellenrohlings 13 senkrecht auf (siehe auch Fig. 14c).
Der feingeschnittene Lamellenrohling 13 wird nach dem Ausstoßen aus der Feinschneidstufe 9 durch einen Querschieber 16 erfasst, mit diesem in die Well- und Prägestufe 10 transportiert und dort vor dem Wellen lagegenau abgelegt.The outer disk 1 is to be produced with a fine cutting tool 6, which comprises an upper part 7 and a lower part 8, which, like Fig. 2 and 3 show at least one fine cutting stage 9 and at least one corrugation and embossing stage 10 form.
The upper part 7 is fixed with its upper block 11 fixed to a machine table, not shown, and the lower part 8 with its lower block 12 hubbeweglich on a plunger of a press, so that the lamella blank 13 from bottom to top -that in the direction of top part of a Strip strip 14 is finely cut in the fine cutting stage 9, which corresponds to the known prior art and therefore need not be explained in more detail.
The burrs 15 on the slat blank 13 protrude at the Außenkontor 2 and the inner contour 3 of the slat blank 13 perpendicular to (see also Fig. 14c ).
The finely cut lamellar blank 13 is detected after ejection from the fine cutting stage 9 by a cross slide 16, transported with this in the corrugation and embossing stage 10 and stored there in precise position before the waves.

Die Fig. 3 zeigt den grundsätzlichen Aufbau der Präge- und Wellstufe 10 im geschlossenen Zustand. Die Präge- und Wellstufe 10 besitzt ein Gesenkoberteil 17 und Gesenkunterteil 18.
Zum Gesenkoberteil 17 gehören eine ringförmige Prägeglocke 19, ein ringförmiger Abstreifring 20 und ein Innenformpräger 21. Die Prägeglocke 19 ist an einer oberen Prägedruckplatte 22 ortsfest befestigt, welche ihrerseits am oberen Block 11 festliegt.
Der Abstreifring 20 stützt sich an der Innenwand 23 der Prägeglocke 19 vertikal und an der oberen Prägedruckplatte 22 horizontal ab, wobei der Abstreifring 20 auf seiner der Prägedruckplatte 22 zugewandten Seite 24 über einen durch eine obere Zusatzhydraulik 25 und eine Ringplatte 26 betätigbaren Druckbolzen 27 eine vertikale Relativbewegung gegenüber der Prägeglocke 19 ausführen kann. In den ringförmigen Abstreifring 20 ist der Innenformpräger 21 eingesetzt, der den Abstreifring 20 vertikal an seiner Außenwand 28 führt und abstützt. Auf dem Innenformpräger 21 liegt eine im ringförmigen Abstreifring 20 angeordnete separate Druckplatte 29, die zur Kraftübertragung mit der Prägedruckplatte 22 in Wirkverbindung steht.
Das Gesenkunterteil 18 ist durch eine ringförmige Matrizeneinfassung 30, einen Zwischenring 31, einen ringförmigen Prägeambos 32 und ein Füllstück 33 gebildet. Die Matrizeneinfassung 30 ist am unteren Block 12 befestigt. Der Zwischenring 31, der Prägeambos 32 und das Füllstück 33 liegen auf einer unteren Prägedruckplatte 34 auf, die ihrerseits über eine untere Zusatzhydraulik 35 in Wirkverbindung steht.The Fig. 3 shows the basic structure of the embossing and wave stage 10 in the closed state. The embossing and wave stage 10 has a Gesenkoberteil 17 and Die lower part 18.
To Gesenkoberteil 17 include an annular embossing bell 19, an annular scraper ring 20 and an inner mold embossment 21. The embossing bell 19 is fixedly secured to an upper embossing plate 22, which in turn is fixed to the upper block 11.
The scraper ring 20 is supported on the inner wall 23 of the embossing bell 19 vertically and on the upper embossing pressure plate 22 horizontally, wherein the scraper ring 20 on its the embossing plate 22 side facing 24 via an actuatable by an upper auxiliary hydraulic 25 and a ring plate 26 pressure pin 27 is a vertical Can perform relative movement relative to the stamping bell 19. In the annular scraper ring 20 of the inner mold embossment 21 is inserted, which guides the scraper ring 20 vertically on its outer wall 28 and supported. On the inner mold embossment 21 is arranged in the annular scraper ring 20 separate pressure plate 29, which is operatively connected to the power transmission with the embossing pressure plate 22.
The die bottom 18 is formed by an annular die enclosure 30, an intermediate ring 31, an annular die 32 and a filler 33. The die skirt 30 is attached to the lower block 12. The intermediate ring 31, the Prägeambos 32 and the filling piece 33 rest on a lower embossing pressure plate 34, which in turn is connected via a lower auxiliary hydraulic 35 in operative connection.

Wie in Fig. 4 vergrößert dargestellt ist, bilden die Prägeglocke 19, der Abstreifring 20 und der Innenformpräger 21 des Gesenkoberteils 17 mit dem Zwischenring 31, dem Prägeambos 32 und dem Füllstück 33 des Gesenkunterteils 18 jeweils Wirkpaare in Bezug auf den Lamellenrohling 13.
Der Lamellenrohling 13 ist an seiner Außenkontur 2 von der Prägeglocke 19 und an seiner Innenkontur 4 vom Innenumformpräger 21 umschlossen, so dass sich während des Wellens des Lamellenrohlings 13 zwischen Abstreifring 20 und Prägeambos 30 kein Verzug am Lamellenrohling 13 einstellen kann.As in Fig. 4 is shown enlarged form the embossing bell 19, the wiper ring 20 and the Inner shaped embossment 21 of the die upper part 17 with the intermediate ring 31, the embossing team 32 and the filling piece 33 of the die lower part 18 each active pairs with respect to the slat blank thirteenth
The lamellar blank 13 is enclosed on its outer contour 2 of the stamping bell 19 and on its inner contour 4 of Innenumformpräg 21, so that during the shaft of the lamellar blank 13 between the scraper ring 20 and 30 Prägeambos no distortion on the lamella blank 13 can be adjusted.

Die Fig. 5 bis 10 verdeutlichen den Aufbau des Gesenkoberteils 17.
Es ist deutlich zu sehen, dass die Innenwand 23 der Prägeglocke 19 und die Außenwand 36a des Abstreifrings 20 aufeinander abgestimmt sind und gemeinsam eine Kontur K aufweisen, die der Außenkontur 2 des Lamellenrohlings 13 entspricht.
Im ringförmigen Abstreifring 20 ist der Innenformpräger 21 vertikal geführt angeordnet.
Die Fig. 6 und 7 stellen eine perspektivische Ansicht der Prägeglocke 19 und einen Schnitt entlang der Linie A-A der Fig. 6 dar. Die Prägeglocke 19 besitzt an ihrem durch die untere Sitzfläche 36 und der Innenwand 23 gebildeten Zentrierrand 37 eine Prägeschulter 38, deren Tiefe T auf die Abmessung und Form des aufragenden Grates an der Außenkontur 2, der Dicke D der Außenlamelle 1 und die Höhe h des Wellenbergs der Wellenprofile abgestimmt ist.
In Fig. 8 ist der Abstreifring 2 gezeigt, der ein Wellenprofil 39 auf seiner dem Prägeambos 32 zugewandten Prägefläche 40 aufweist. Dieses Wellenprofil 39 ist auf die gewünschte Wellung der Außenlamelle 1 abgestimmt.
Der Innenformpräger 21 besitzt eine zylinderförmige Gestalt und ist in seiner Kontur an die Innenkontur 4 des Lamellenrohlings 13 angepasst (siehe Fig. 9).
Man erkennt aus Fig. 10, dass der Innenformpräger 21 an seinem unteren, dem aufragenden Grat 15 an der Innenkontur 4 zugewandten Zentrierrand 41 eine Prägeschulter 42 besitzt, welche in ihrer Tiefe t an die Abmessung und Form des Grates 15, der Dicke D der Außenlamelle 1 und die Höhe h des Wellenprofils abgestimmt ist.The Fig. 5 to 10 illustrate the structure of the Gesenkoberteils 17th
It can clearly be seen that the inner wall 23 of the embossing bell 19 and the outer wall 36a of the scraper ring 20 are matched to one another and together have a contour K which corresponds to the outer contour 2 of the slat blank 13.
In the annular scraper ring 20 of the inner mold embossment 21 is arranged vertically guided.
The Fig. 6 and 7 represent a perspective view of the embossing bell 19 and a section along the line AA of Fig. 6 The stamping bell 19 has on its formed by the lower seat surface 36 and the inner wall 23 centering edge 37 an embossing shoulder 38, the depth T on the size and shape of the towering ridge on the outer contour 2, the thickness D of the outer plate 1 and the height h the wave crest of the wave profiles is tuned.
In Fig. 8 the scraper ring 2 is shown, which faces a wave profile 39 on its embossing team 32 Embossed surface 40 has. This wave profile 39 is tuned to the desired curl of the outer plate 1.
The inner form embossment 21 has a cylindrical shape and is adapted in its contour to the inner contour 4 of the lamella blank 13 (see Fig. 9 ).
One recognizes Fig. 10 in that, at its lower centering edge 41 facing the upstanding ridge 15 on the inner contour 4, the inner form embossment 21 has an embossing shoulder 42 whose depth t corresponds to the dimension and shape of the ridge 15, the thickness D of the outer lamella 1 and the height h of the Wave profile is tuned.

Das Gesenkunterteil 18 ist in Fig. 11 ohne Matrizeneinfassung gezeigt. Die Innenwand 43 des Zwischenrings 31 und die Außenwand 44 des Prägeambos 32 besitzen eine aufeinander abgestimmte Kontur K, die der Außenkontur 3 des Lamellenrohlings 13 entspricht.
Der Prägeambos 32 hat -wie Fig. 12 zeigt- auf seiner Prägefläche 45 ein Wellenprofil 46, welches an die gewünschte Wellung der Außenlamelle 1 angepasst ist.
Beispiele für Wellenprofile 39 bzw. 46 am Abstreifring 20 bzw. Prägeambos 32 sind als Abwicklung in den Fig. 13a bis 13c gemäß Schnittlinie C-C der Fig. 11 dargestellt.
So können je nach Erfordernis gleichmäßig oder ungleichmäßig am Umfang des Lamellenrohlings 13 verteilte Wellungen wie 3fach Wellen, 4fach Wellen oder 2+2fach Wellen vorgesehen werden.The die lower part 18 is in Fig. 11 shown without matrix border. The inner wall 43 of the intermediate ring 31 and the outer wall 44 of the embossing team 32 have a coordinated contour K which corresponds to the outer contour 3 of the lamella blank 13.
The stamping team 32 has - like Fig. 12 shows on its embossing surface 45, a wave profile 46, which is adapted to the desired curl of the outer plate 1.
Examples of wave profiles 39 and 46 on the scraper ring 20 and Prägeambos 32 are as settlement in the Fig. 13a to 13c according to section line CC of Fig. 11 shown.
Thus, depending on the requirement, evenly or unevenly distributed corrugations such as 3-fold waves, 4-fold waves or 2 + 2-fold waves can be provided on the circumference of the slat blank 13.

Der Ablauf des erfindungsgemäßen Verfahrens wird anhand der Fig. 14a bis 14d beschrieben. In Fig. 14a hat der Querschieber 16 den Lamellenrohling 13 auf dem Prägeambos 32 abgelegt. Durch den Zentrierrand 37 der Prägeglocke 19 erfolgt eine Zentrierung nach der Außenkontur 2 des Lamellenrohlings 13 und den Zentrierrand 41 eine Zentrierung nach der Innenkontur 4, so dass der Lamellenrohling 13 positionsgenau auf dem Prägeambos 19 für den Klemmzustand zu liegen kommt (siehe Fig. 14b).
Die Fig. 14c zeigt den Zustand, in dem das Wellenprofil 39 der Prägefläche 40 des Abstreifrings 20 mit seinen Wellenbergen 47 durch die Hubbewegung des Prägeambos 32 den Lamellenrohling 13 erreicht hat. Der Wellenformvorgang am Lamellenrohling setzt ein und ist abgeschlossen, bevor die Prägeschulter 38 bzw. 42 der Prägeglocke 19 und des Innenformprägers 21 den Schnittgrat 15 an der Außenkontur 2 und Innenkontur 4 erfassen können.
Nach weiterem Hub des Prägeambos 32 erreichen die Prägeschultern 38 und 42 den Schnittgrat 15 und verprägen diesen am Lamellenkörper. Der Prägevorgang ist abgeschlossen In Fig. 14d hat der Abstreifring 20 die gewellte und gratverprägte Außenlamelle 1 durch die obere Zusatzhydraulik 25 von den Prägeschultern 38 und 42 abgestriffen. Die Außenlamelle 1 kann nach Öffnen des Werkzeugs mittels des Querschiebers 16 auf dem Werkzeug transportiert werden. Bezugszeichenliste Außenlamelle 1 Außenkontur 2 Verzahnung 3 Innenkontur 4 Wellung 5 Feinschneidwerkzeug 6 Oberteil von 6 7 Unterteil von 6 8 Feinschneidstufe 9 Well- und Prägestufe 10 Oberer Block 11 Unterer Block 12 Lamellenrohling 13 Bandstreifen 14 Schnittgrate 15 Querschieber 16 Gesenkoberteil 17 Gesenkunterteil 18 Prägeglocke 19 Abstreifring 20 Innenformpräger 21 Oberer Prägedruckplatte 22 Innenwand von 19 23 Sitzseite für 20 24 Obere Zusatzhydraulik 25 Obere Ringplatte 26 Druckbolzen 27 Außenwand von 21 28 Separate Druckplatte für 21 29 Matrizeneinfassung 30 Zwischenring 31 Ringförmiger Prägeambos 32 Füllstück 33 Untere Prägedruckplatte 34 Untere Zusatzhydraulik 35 Untere Sitzfläche von 19 36 Außenwand 36a Unterer Rand von 19 37 Prägeschulter an 19 38 Wellenprofil für 20 39 Prägefläche von 20 40 Rand von 21 41 Prägeschulter von 21 42 Außenwand von 31 43 Außenwand von 32 44 Prägefläche von 32 45 Wellenprofil von 32 46 Wellenberge 47 Dicke der Lamelle D Hubrichtung H Höhe des Wellenbergs/Wellenprofils h Kontur K Tiefe der Prägeschulter 38 T Tiefe der Prägeschulter 42 t The course of the method according to the invention is based on the Fig. 14a to 14d described. In Fig. 14a has the Cross slide 16 the slat blank 13 placed on the Prägeambos 32. Due to the centering edge 37 of the embossing bell 19, a centering on the outer contour 2 of the lamella blank 13 and the centering 41 centering on the inner contour 4, so that the lamella blank 13 is positioned exactly on the Prägeambos 19 for the clamping state (see Fig. 14b ).
The Fig. 14c shows the state in which the wave profile 39 of the embossing surface 40 of the scraper ring 20 with its crests 47 has reached the lamellar blank 13 by the lifting movement of the embossing team 32. The wave forming process on the lamellar blank sets in and is completed before the embossing shoulder 38 or 42 of the embossing bell 19 and the Innenformprägers 21 can grasp the cutting ridge 15 on the outer contour 2 and inner contour 4.
After further stroke of the embossing team 32 reach the embossing shoulders 38 and 42 the cutting ridge 15 and emboss this on the lamellar body. The embossing process is completed Fig. 14d has the wiper ring 20, the corrugated and ridge embossed outer plate 1 stripped by the upper auxiliary hydraulic 25 of the embossing shoulders 38 and 42. The outer disk 1 can be transported by opening the tool by means of the cross slide 16 on the tool. LIST OF REFERENCE NUMBERS outer plate 1 outer contour 2 gearing 3 inner contour 4 curl 5 Fine cutting tool 6 Top of 6 7 Lower part of 6 8th Fine cutting stage 9 Well and embossing step 10 Upper block 11 Lower block 12 blade blank 13 tape strips 14 burrs 15 cross slide 16 Swaging part 17 Gesenkunterteil 18 embossing bell 19 scraper 20 Interior shape Präger 21 Upper embossing plate 22 Inside wall of 19 23 Seat side for 20 24 Upper auxiliary hydraulics 25 Upper ring plate 26 pushpin 27 Outer wall of 21 28 Separate pressure plate for 21 29 Matrizeneinfassung 30 intermediate ring 31 Ring-shaped embossing team 32 filling 33 Lower embossing plate 34 Lower auxiliary hydraulics 35 Lower seat of 19 36 outer wall 36a Lower edge of 19 37 Embossing school at 19 38 Wave profile for 20 39 Embossing area of 20 40 Edge of 21 41 Embossing school of 21 42 Outer wall of 31 43 Outer wall of 32 44 Embossing area of 32 45 Wave profile of 32 46 crests 47 Thickness of the slat D stroke direction H Height of wave crest / wave profile H contour K Depth of the embossing shoulder 38 T Depth of the embossing shoulder 42 t

Hierzu 16 Blatt ZeichnungenFor this 16 sheets of drawings

Claims (16)

  1. A tool for producing stamped parts, in particular disks, having an upper part (7) and a lower part (8) which form at least one stamping or fine blanking stage (9) for cutting the outer and inner contours (2, 4) of a disk blank (13) and at least one corrugating and embossing stage (10) for corrugating the disk blank (13) and for embossing the burrs (15) arising during cutting, the corrugating and embossing stage (10) being divided into an upper die part (17) and a lower die part (18), characterised in that the upper die part (17) comprises an embossing bell (19), a stripper ring (20) provided with an embossing face (40) and having a corrugated profile (39) on the embossing face (40), and an internal shape embossing means (21), while the lower die part (18) comprises an embossing anvil (32) with a corrugated profile (46) on its embossing face (45), the embossing bell (19) and the internal shape embossing means (21) being respectively provided with embossing shoulders (38, 42), which are arranged relative to the corrugated profile (39) of the stripper ring (20) in the stroke direction (H) so as to be able to grip the cutting burrs (15) only after corrugation, such that corrugation precedes burr embossment and the outer and inner contours (2, 4) of the disk cannot change position, but can change shape on the burr side (48) after corrugation.
  2. A tool according to claim 1, characterised in that the embossing bell (19) for fixing the outer contour (2) of the disk blank (13) is of annular construction and completely surrounds the outer contour (2) of the disk blank (13), and in that the internal shape embossing means (21) is arranged resting against the inner contour (4).
  3. A tool according to claim 1, characterised in that the stripper ring (20) rests vertically against and is guided on the inner wall (23) of the embossing bell (19) and the outer wall (28) of the internal shape embossing means (21).
  4. A tool according to claim 2, characterised in that the embossing bell (19) has profiling on its inner wall (23) which is conformed to the outer contour (2) of the disk blank (13).
  5. A tool according to claim 2, characterised in that the internal shape embossing means (21) is conformed at its outer wall (28) to the inner contour (4) of the disk blank (13).
  6. A tool according to claim 1, characterised in that the embossing shoulder (38) is arranged on the inner wall (23) of the embossing bell (19) and the embossing shoulder (42) of the internal shape embossing means (21) is arranged on the outer wall (28) thereof, the embossing shoulders (38, 42) having a position and shape which is matched to the dimensions and shape of the cutting burr (15), the thickness (D) of the disk blank (13) and the corrugated profile (39) of the embossing face (40) of the stripper ring (21).
  7. A tool according to claim 1, characterised in that the lower die part (18) comprises an intermediate ring (31) guided vertically in a die enclosure (30) and conformed to the embossing bell (19), the annular face of which intermediate ring (31) forms a seat for the embossing bell (19) when upper die part (17) and lower die part (18) are closed and the internal wall of which is conformed to the fine-blanked outer contour (2) of the disk blank (13).
  8. A tool according to claim 1, characterised in that the embossing bell (19) is operatively connected with an upper block (11) via an upper embossing pressure plate (22) and to the internal shape embossing means (21) via a further pressure plate (29).
  9. A tool according to claim 2, characterised in that the internal shape embossing means (21) is arranged in vertically guided manner in the stripper ring (20).
  10. A tool according to claim 9, characterised in that the stripper ring (20) is operatively connected via a pressure pin (27) and an upper annular plate (26) with additional upper hydraulics (25) for stripping off the finished disk.
  11. A tool according to claim 1, characterised in that the lower die part (18) further comprises a filler piece (33) guided vertically in the embossing anvil (32) and associated with the internal shape embossing means (21) in the upper die part (17).
  12. A tool according to claim 7, characterised in that the die enclosure (30) is fixed stationarily to the lower block (12).
  13. A tool according to claim 7, characterised in that the intermediate ring (31) and the embossing anvil (32) are operatively connected via a lower pressure plate (29) and a lower block (12) to an additional lower hydraulics (35).
  14. A method for producing stamped parts, in particular fine-blanked parts such as disks, having a tool according to claim 1, in which in a stamping or fine-blanking stage (19) the outer and inner contours (2, 4) of a disk blank (13) are fine-blanked in a first method step from a flat strip (14) within a tool (6) comprising an upper and a lower part (7, 8), the fine-blanked disk blank (13) is brought by a cross-slide (16) after opening of the tool into a corrugating and embossing stage (10) in which, in a second method step, after closure of the tool, the disk blank (13) receives a corrugated profile (5) by forming against an upper die part (17) and a lower die part (18) and the burrs (15) arising during cutting are embossed on the disk, wherein the first and second method steps are performed in one stroke, characterised in that within the corrugating and embossing stage (10) at the same time as corrugation of the disk blank the outer and inner contours (2, 4) are fixed, retaining their position and shape during corrugation, corrugation preceding burr embossment, and the outer and inner contours (2, 4) of the disk cannot change position, but can change shape on the burr side (48) as a result of the subsequent embossment.
  15. A method according to claim 14, characterised in that the disk blank (13) is corrugated by an embossing anvil (32) constituting part of the lower die part (18) and a stripper ring (20) constituting part of the upper die part (17).
  16. A method according to claim 15, characterised in that corrugated profiles (39, 46) with uniformly shaped crests and troughs, or at least two irregularly shaped corrugations with differently shaped crests and troughs are used.
EP13004190.8A 2013-08-28 2013-08-28 Tool and method for the production of stamped parts Active EP2842653B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP13004190.8A EP2842653B1 (en) 2013-08-28 2013-08-28 Tool and method for the production of stamped parts
JP2014169069A JP6472190B2 (en) 2013-08-28 2014-08-22 Method for the manufacture of tools and stamped parts
US14/467,483 US9669448B2 (en) 2013-08-28 2014-08-25 Tool and method for producing stamped parts
KR1020140111663A KR102226591B1 (en) 2013-08-28 2014-08-26 Tool and Method for Producing Stamped Parts
CN201410431402.7A CN104416056B (en) 2013-08-28 2014-08-28 For manufacturing the mould and method of stamping parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13004190.8A EP2842653B1 (en) 2013-08-28 2013-08-28 Tool and method for the production of stamped parts

Publications (2)

Publication Number Publication Date
EP2842653A1 EP2842653A1 (en) 2015-03-04
EP2842653B1 true EP2842653B1 (en) 2016-05-11

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EP13004190.8A Active EP2842653B1 (en) 2013-08-28 2013-08-28 Tool and method for the production of stamped parts

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US (1) US9669448B2 (en)
EP (1) EP2842653B1 (en)
JP (1) JP6472190B2 (en)
KR (1) KR102226591B1 (en)
CN (1) CN104416056B (en)

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Publication number Priority date Publication date Assignee Title
CN105328024A (en) * 2015-11-11 2016-02-17 无为县鑫发盛汽车零部件有限公司 Stamping mould for automobile plates
CN106424261B (en) * 2016-11-30 2018-01-23 燕山大学 A kind of sheet material ring ripple drawing severe deformation mould and technique repeatedly
JP6531265B2 (en) * 2017-03-27 2019-06-19 石崎プレス工業株式会社 METHOD FOR MANUFACTURING METAL PARTS AND APPARATUS FOR MANUFACTURING METAL PARTS
CN111374724B (en) * 2018-12-29 2021-09-07 江苏风和医疗器材股份有限公司 Preparation process of suturing nail forming part
CN109909360A (en) * 2019-03-22 2019-06-21 东莞市瑞辉机械制造有限公司 A kind of cutter with arcuation blade
CN112893602A (en) * 2021-02-01 2021-06-04 南昌航空大学 Stamping forming die for single-waveform ring parts

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US4267753A (en) * 1979-11-08 1981-05-19 Bennett Edward D Apparatus for producing a blank from stock material
US5794484A (en) * 1993-11-23 1998-08-18 Ford Global Technologies, Inc. Universally making waved parts
US5492001A (en) * 1994-01-18 1996-02-20 Kabushiki Kaisha Yutaka Giken Method and apparatus for working burred portion of workpiece
DE19608551A1 (en) 1996-03-06 1997-09-11 Zahnradfabrik Friedrichshafen Method and device for producing stamped parts
JP4271332B2 (en) * 2000-02-22 2009-06-03 本田技研工業株式会社 Method for manufacturing wave disk for friction engagement device
JP3524503B2 (en) 2000-02-28 2004-05-10 本田技研工業株式会社 Method of manufacturing wave disk for friction engagement device
JP3418180B2 (en) * 2001-01-10 2003-06-16 株式会社飯塚製作所 Ring gear manufacturing method
JP3970203B2 (en) * 2002-09-17 2007-09-05 アイシン化工株式会社 Wetting friction core metal waving mold
US6948350B2 (en) * 2003-05-19 2005-09-27 Aisin Kako Kabushiki Kaisha Wave-processing method and wave-processing die for core metal of wet friction material
JP2006142363A (en) * 2004-11-24 2006-06-08 Nhk Spring Co Ltd Method for manufacturing brake disk
ATE505278T1 (en) * 2009-01-19 2011-04-15 Finova Feinschneidtechnik Gmbh METHOD AND DEVICE FOR FINE CUTTING OF WORKPIECES
DE102010028280B4 (en) 2010-04-28 2020-11-12 Zf Friedrichshafen Ag Process for the production of stamped parts as well as device and use
CN202087671U (en) * 2011-01-26 2011-12-28 成都万荣科技有限责任公司 Simple precise die
CN103212635B (en) * 2013-04-17 2015-05-27 武汉理工大学 Car transmission synchronizer gear ring fine blanking and deep drawing combined forming process and mold

Also Published As

Publication number Publication date
US9669448B2 (en) 2017-06-06
CN104416056B (en) 2018-03-16
KR20150026890A (en) 2015-03-11
JP2015044237A (en) 2015-03-12
KR102226591B1 (en) 2021-03-11
JP6472190B2 (en) 2019-02-20
EP2842653A1 (en) 2015-03-04
CN104416056A (en) 2015-03-18
US20150101385A1 (en) 2015-04-16

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