EP0885074A1 - Method and device for producing stamped parts - Google Patents

Method and device for producing stamped parts

Info

Publication number
EP0885074A1
EP0885074A1 EP97906163A EP97906163A EP0885074A1 EP 0885074 A1 EP0885074 A1 EP 0885074A1 EP 97906163 A EP97906163 A EP 97906163A EP 97906163 A EP97906163 A EP 97906163A EP 0885074 A1 EP0885074 A1 EP 0885074A1
Authority
EP
European Patent Office
Prior art keywords
stage
workpiece
raw material
burrs
stamped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97906163A
Other languages
German (de)
French (fr)
Other versions
EP0885074B1 (en
Inventor
Alfred Skrabs
Willy Grimm
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
ZF Friedrichshafen AG
Original Assignee
Feintool International Holding AG
ZF Friedrichshafen 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, ZF Friedrichshafen AG filed Critical Feintool International Holding AG
Publication of EP0885074A1 publication Critical patent/EP0885074A1/en
Application granted granted Critical
Publication of EP0885074B1 publication Critical patent/EP0885074B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; 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
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00

Definitions

  • the invention relates to a method and a device for producing stamped parts, in particular lamellae.
  • Stamped parts in particular lamellae, as are used, for example, as a clutch or brake in automatic transmissions, are usually produced in the following process steps: stamping, deburring, straightening and visual inspection.
  • punching the workpiece is punched out of the raw material.
  • stamped burrs are formed on the outer and inner contours. These burrs are removed during deburring.
  • Deburring processes include belt grinding, brushing and surface grinding.
  • straightening the workpiece is brought to a specifiable flatness, for example by rolling.
  • the last step in the procedure is the visual inspection. During the visual inspection, the workpiece is checked for damage, such as scratches or impressions. Between these individual process steps, the workpiece is removed from the respective tool, stored temporarily and transported to the next tool.
  • the process steps can be reduced to punching, deburring and visual inspection.
  • One type of pretreatment is, for example, relaxation annealing.
  • the disadvantage of this known manufacturing method is the high manufacturing effort and the long manufacturing time.
  • the object of the invention is to reduce the manufacturing outlay and the manufacturing time.
  • the task is solved by a method for producing stamped parts, in particular lamellae, in which case the method comprises only two method steps.
  • a first method step the workpiece is punched out of raw material in a device in a cutting stage and, after the punching, is brought into a pre-punching step by means of transfer pliers likewise accommodated in the device.
  • the Prague stage is also within the device.
  • the inner and outer contours are stamped on the workpiece in the workede stage, so that the burrs formed on the workpiece in the first process step are rounded.
  • the solution according to the invention offers the advantage that the workpiece is produced in only one tool. A post-treatment and visual inspection are not necessary. Another advantage is that intermediate storage and transportation are also eliminated.
  • a first workpiece be punched from raw material during a working step in the cutting stage and that the burrs are stamped out in the second stage in the pre-cutting stage.
  • the first workpiece is automatically transported from the cutting stage to the verye stage by means of the transfer pliers.
  • the second workpiece is removed from the device at the same time and the fineblanking stage is equipped with a new raw material.
  • Reference number 1 shows the device.
  • the device 1 consists of a fine blanking stage 2, a transport tongs 4 and the embossing stage 3.
  • the workpiece 5 is punched from raw material.
  • the workpiece 5 is designed as a lamella in cross section.
  • circumferential stamped burrs 6 are produced on the lamella 5 both on the inner and on the outer contour. In this state, the lamella 5 cannot be used without aftertreatment.
  • the slat 5 is ejected from the fineblanking stage 2 into one
  • Transfer tongs 4 pressed.
  • the transfer tongs 4 automatically transport the finely-cut lamella 5 into the embossing step 3 within the device 1.
  • the burrs of the lamella 5 are stamped, in other words, the outer and inner contours of the lamella 5 is rounded. This is shown in FIG. 1 with the reference number 7.
  • the embossing stage 3 consists of an upper die part 8 and a lower die part 9. The lamella 5 produced in this way is ready for installation without any further operations.
  • a higher number of machined workpieces is achieved by simultaneously processing a first lamella in the fineblanking stage 2 and a second lamella within the embossing stage 3 during one operation. After completion of this work step, the first lamella is brought out of the fine blanking stage 3, as described above, in the embossing stage 3. At the same time, the second lamella, finished in step 3, is removed from the tool.
  • this method and the device is not limited to the manufacture of lamellae.
  • the method and the device can generally be used for the production of stamped parts.

Abstract

The invention concerns a method for producing stamped parts, in particular plates, which comprises only two steps. In a first method step, the workpiece is blanked inside a device (1) in a fine blanking stage (2) and, after blanking, is moved to a stamping stage (3) by means of transfer tongs (4) which are likewise housed in the device (1). The stamping stage (3) is also located inside the device (1). In a second method step, the inner and outer contours are stamped on the workpiece (5) in the stamping stage (3) such that the burrs produced on the workpiece (5) during the first step are rounded.

Description

Verfahren und Vorrichtung zur Herstellung von Stanzteilen Method and device for producing stamped parts
Die Erfindung betrifft ein Verfahren und eine Vorrich¬ tung zur Herstellung von Stanzteilen, insbesondere von La¬ mellen.The invention relates to a method and a device for producing stamped parts, in particular lamellae.
Üblicherweise werden Stanzteile, insbesondere Lamel- len, wie sie zum Beispiel als Kupplung oder Bremse in Auto¬ matgetrieben verwendet werden, in folgenden Verfahrens¬ schritten hergestellt: Stanzen, Entgraten, Richten und Sichtprüfung. Beim Stanzen wird das Werkstück aus dem Roh¬ material ausgestanzt. Bei diesem Verfahrensschritt entste- hen an der Außen- und Innenkontur Stanzgrate. Beim Entgra¬ ten werden diese Grate entfernt. Verfahren zum Entgraten sind zum Beispiel das Bandschleifen, das Bürsten und das Gleitschleifen. Beim Richten wird das Werkstück auf eine vorgebbare Ebenheit gebracht, zum Beispiel durch Walzen. Der letzte Verfahrensschritt ist die Sichtprüfung. Bei der Sichtprüfung wird das Werkstück auf Beschädigungen, wie zum Beispiel Kratzer oder Eindrücke, geprüft. Zwischen diesen einzelnen Verfahrensschritten wird das Werkstück aus dem jeweiligen Werkzeug entnommen, zwischengelagert und zum nächsten Werkzeug transportiert.Stamped parts, in particular lamellae, as are used, for example, as a clutch or brake in automatic transmissions, are usually produced in the following process steps: stamping, deburring, straightening and visual inspection. When punching, the workpiece is punched out of the raw material. In this process step, stamped burrs are formed on the outer and inner contours. These burrs are removed during deburring. Deburring processes include belt grinding, brushing and surface grinding. When straightening, the workpiece is brought to a specifiable flatness, for example by rolling. The last step in the procedure is the visual inspection. During the visual inspection, the workpiece is checked for damage, such as scratches or impressions. Between these individual process steps, the workpiece is removed from the respective tool, stored temporarily and transported to the next tool.
Durch Vorbehandlung des Rohmaterials lassen sich die Ver¬ fahrensschritte auf das Stanzen, Entgraten und die Sicht¬ prüfung reduzieren. Eine Art der Vorbehandlung ist zum Bei¬ spiel das Entspannungsglühen. Nachteilig bei diesem bekann- ten Herstellungsverfahren ist der hohe Fertigungsaufwand und die lange Fertigungszeit. Die Erfindung hat insofern zur Aufgabe, den Ferti¬ gungsaufwand und die Herstellzeit zu verringern. Die Auf¬ gabe wird erfmdungsgemaß durch ein Verfahren zum Herstel¬ len von Stanzteilen, insbesondere von Lamellen, gelost, hierbei umfaßt das Verfahren lediglich zwei Verfahrens¬ schritte. In einem ersten Verfahrensschritt wird das Werk¬ stuck innerhalb einer Vorrichtung in einer Femschneidstufe aus Rohmaterial gestanzt und nach dem Stanzen mittels einer ebenfalls in der Vorrichtung untergebrachten Transferzange in ein Pragestufe verbracht. Die Pragestufe befindet sich ebenfalls innerhalb der Vorrichtung. In einem zweiten Ver¬ fahrensschritt wird m der Pragestufe am Werkstuck die In¬ nen- und die Außenkontur verpragt, so daß die beim ersten Verfahrensschritt am Werkstück entstandenen Grate verrundet sind.By pretreating the raw material, the process steps can be reduced to punching, deburring and visual inspection. One type of pretreatment is, for example, relaxation annealing. The disadvantage of this known manufacturing method is the high manufacturing effort and the long manufacturing time. In this respect, the object of the invention is to reduce the manufacturing outlay and the manufacturing time. According to the invention, the task is solved by a method for producing stamped parts, in particular lamellae, in which case the method comprises only two method steps. In a first method step, the workpiece is punched out of raw material in a device in a cutting stage and, after the punching, is brought into a pre-punching step by means of transfer pliers likewise accommodated in the device. The Prague stage is also within the device. In a second process step, the inner and outer contours are stamped on the workpiece in the prague stage, so that the burrs formed on the workpiece in the first process step are rounded.
Die erfindungsgemaße Losung bietet den Vorteil, daß das Werkstuck in nur einem Werkzeug hergestellt wird. Eine Nachbehandlung und Sichtprüfung entfallt. Ein weiterer Vor- teil besteht darin, daß eine Zwischenlagerung und ein Transport ebenfalls entfallt.The solution according to the invention offers the advantage that the workpiece is produced in only one tool. A post-treatment and visual inspection are not necessary. Another advantage is that intermediate storage and transportation are also eliminated.
In einer Ausgestaltung hierzu wird vorgeschlagen, daß wahrend eines Arbeitsganges in der Femschneidstufe em erstes Werkstuck aus Rohmaterial gestanzt wird und gleich¬ zeitig in der Pragestufe bei einem zweiten Werkstuck die Grate verpragt werden.In an embodiment of this, it is proposed that a first workpiece be punched from raw material during a working step in the cutting stage and that the burrs are stamped out in the second stage in the pre-cutting stage.
In einer weiteren Ausgestaltung der Erfindung wird vorge¬ schlagen, daß nach Beendigung eines Arbeitsganges das erste Werkstuck mittels der Transferzange von der Femschneidstu¬ fe zur Pragestufe selbsttätig transportiert wird. Das zwei¬ te Werkstuck wird gleichzeitig aus der Vorrichtung entfernt und die Feinschneidstufe wird mit einem neuen Rohmaterial bestückt.In a further embodiment of the invention, it is proposed that after the completion of an operation, the first workpiece is automatically transported from the cutting stage to the prague stage by means of the transfer pliers. The second workpiece is removed from the device at the same time and the fineblanking stage is equipped with a new raw material.
In der einzigen Zeichnung ist ein Ausführungsbeispiel dargestellt. Bezugszeichen 1 zeigt die Vorrichtung. Die Vorrichtung 1 besteht aus einer Feinschneidstufe 2, einer Transportzange 4 und der Prägestufe 3. In der Feinschneid¬ stufe 2 wird aus Rohmaterial das Werkstück 5 gestanzt. In der Figur ist das Werkstück 5 als eine Lamelle im Quer- schnitt ausgeführt. Bei diesem ersten Verfahrensschritt entstehen an der Lamelle 5 sowohl an der Innen- als auch an der Außenkontur umlaufende Stanzgrate 6. In diesem Zustand ist die Lamelle 5 ohne Nachbehandlung nicht verwendbar. Nach Abschluß des ersten Verfahrensschrittes wird die La- melle 5 beim Auswerfen aus der Feinschneidstufe 2 in eineAn embodiment is shown in the single drawing. Reference number 1 shows the device. The device 1 consists of a fine blanking stage 2, a transport tongs 4 and the embossing stage 3. In the fine blanking stage 2, the workpiece 5 is punched from raw material. In the figure, the workpiece 5 is designed as a lamella in cross section. In this first process step, circumferential stamped burrs 6 are produced on the lamella 5 both on the inner and on the outer contour. In this state, the lamella 5 cannot be used without aftertreatment. After completion of the first process step, the slat 5 is ejected from the fineblanking stage 2 into one
Transferzange 4 gedrückt. Die Transferzange 4 transportiert innerhalb der Vorrichtung 1 selbsttätig die feingeschnitte¬ ne Lamelle 5 in die Prägestufe 3. In der Prägestufe 3 wird im zweiten Verfahrensschritt die Grate der Lamelle 5 ver- prägt, mit anderen Worten, die Außen- und die Innenkontur der Lamelle 5 wird verrundet. In Fig. 1 ist dies mit dem Bezugszeichen 7 dargestellt. Die Prägestufe 3 besteht aus einem Gesenkoberteil 8 und einem Gesenkunterteil 9. Die so hergestellte Lamelle 5 ist ohne jegliche weitere Arbeits- gänge einbaufertig.Transfer tongs 4 pressed. The transfer tongs 4 automatically transport the finely-cut lamella 5 into the embossing step 3 within the device 1. In the second step in the embossing step 3, the burrs of the lamella 5 are stamped, in other words, the outer and inner contours of the lamella 5 is rounded. This is shown in FIG. 1 with the reference number 7. The embossing stage 3 consists of an upper die part 8 and a lower die part 9. The lamella 5 produced in this way is ready for installation without any further operations.
Eine höhere Stückzahl an bearbeiteten Werkstücken wird da¬ durch erzielt, daß während eines Arbeitsganges innerhalb der Vorrichtung 1 eine erste Lamelle in der Feinschneidstu¬ fe 2 und eine zweite Lamelle innerhalb der Prägestufe 3 gleichzeitig bearbeitet werden. Nach Beendigung dieses Ar¬ beitsganges wird die erste Lamelle aus der Feinschneidstu¬ fe, wie zuvor beschrieben, m die Prägestufe 3 gebracht. Gleichzeitig wird die m der Pragestufe 3 fertig bearbeite¬ te zweite Lamelle aus dem Werkzeug entfernt.A higher number of machined workpieces is achieved by simultaneously processing a first lamella in the fineblanking stage 2 and a second lamella within the embossing stage 3 during one operation. After completion of this work step, the first lamella is brought out of the fine blanking stage 3, as described above, in the embossing stage 3. At the same time, the second lamella, finished in step 3, is removed from the tool.
Es sei darauf hingewiesen, daß dieses Verfahren und die Vorrichtung nicht nur auf die Herstellung von Lamellen beschrankt ist. Das Verfahren und die Vorrichtung laßt sich im allgemeinen fur die Herstellung von Stanzteilen anwen¬ den. It should be noted that this method and the device is not limited to the manufacture of lamellae. The method and the device can generally be used for the production of stamped parts.
BezugszeichenReference numerals
1 Vorrichtung 2 Feinschneidstufe1 device 2 fineblanking stage
3 Prägestufe3 embossing levels
4 Transferzange4 transfer pliers
5 Werkstück5 workpiece
6 Stanzgrat 7 verpragter Grat6 punching ridges 7 burrs
8 Gesenkoberteil8 die top
9 Gesenkunterteil 9 lower part of the die

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Verfahren zum Herstellen von Stanzteilen, msbeson- dere von Lamellen, hierbei umfaßt das Verfahren lediglich zwei Verfahrensschritte, in einem ersten Verfahrensschritt wird das Werkstück (5) innerhalb einer Vorrichtung (1) in einer Feinschneidstufe (2) aus Rohmaterial gestanzt und nach dem Stanzen mittels emer ebenfalls m der Vorrich- tung (1) untergebrachten Transferzange (4) m eme Prage¬ stufe (3) verbracht, hierbei befindet sich die Prage¬ stufe (3) ebenfalls innerhalb der Vorrichtung (1) und in einem zweiten Verfahrensschritt wird in der Pragestufe (3) am Werkstück (5) die Innen- und die Außenkontur verpragt, so daß die beim ersten Verfahrensschritt am Werkstuck (5) entstandenen Grate (6) derart verrundet sind, daß das Werk¬ stück (5) keiner weiteren Nachbehandlung mehr bedarf.1. Method for producing stamped parts, in particular lamellas, in this case the method comprises only two method steps. In a first method step, the workpiece (5) is punched from raw material in a device (1) in a fine blanking stage (2) and after Punching by means of a transfer pliers (4), which is also accommodated in the device (1), is carried out in a stamping stage (3), in this case the stamping stage (3) is likewise located within the device (1) and is carried out in a second method step in the pre-stage (3) on the workpiece (5) the inner and outer contours are embossed, so that the burrs (6) formed on the workpiece (5) in the first process step are rounded in such a way that the workpiece (5) has no further post-treatment needs more.
2. Verfahren nach Anspruch 1, dadurch g e k e n n - z e i c h n e t , daß wahrend eines Arbeitsganges in der2. The method according to claim 1, characterized g e k e n n - z e i c h n e t that during an operation in the
Femschneidstufe (2) ein erstes Werkstuck (5) aus Rohmate¬ rial gestanzt wird und gleichzeitig in der Prägestufe (3) bei einem zweiten Werkstück (5) die Grate verpragt werden.A first workpiece (5) is punched out of raw material at the cutting stage (2) and, at the same time, the burrs are stamped on a second workpiece (5) in the embossing stage (3).
3. Verfahren nach Anspruch 1 oder 2, dadurch g e ¬ k e n n z e i c h n e t , daß nach Beendigung eines Ar¬ beitsganges das erste Werkstuck (5) mittels der Transfer¬ zange (4) von der Feinschneidstufe (2) zur Pragestufe (3) selbsttätig innerhalb der Vorrichtung (1) transportiert wird, das zweite Werkstuck aus der Vorrichtung (1) entfernt und die Feinschneidstufe (2) mit neuem Rohmaterial bestuckt wird. 3. The method according to claim 1 or 2, characterized ge ¬ indicates that after the completion of a work step, the first workpiece (5) by means of the Transfer¬ pliers (4) from the fineblanking stage (2) to the Prague stage (3) automatically within the device (1) is transported, the second workpiece is removed from the device (1) and the fine blanking stage (2) is fitted with new raw material.
4. Verfahren nach Anspruch 1, dadurch g e k e n n ¬ z e i c h n e t , daß die Prägestufe (3) aus einem Gesen¬ koberteil (8) und einem Gesenkunterteil (9) besteht. 4. The method according to claim 1, characterized in that the embossing stage (3) consists of a Gesenk¬ upper part (8) and a lower die part (9).
EP97906163A 1996-03-06 1997-03-05 Method and device for producing stamped parts Expired - Lifetime EP0885074B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19608551 1996-03-06
DE19608551A DE19608551A1 (en) 1996-03-06 1996-03-06 Method and device for producing stamped parts
PCT/EP1997/001093 WO1997032678A1 (en) 1996-03-06 1997-03-05 Method and device for producing stamped parts

Publications (2)

Publication Number Publication Date
EP0885074A1 true EP0885074A1 (en) 1998-12-23
EP0885074B1 EP0885074B1 (en) 2000-01-05

Family

ID=7787319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97906163A Expired - Lifetime EP0885074B1 (en) 1996-03-06 1997-03-05 Method and device for producing stamped parts

Country Status (7)

Country Link
US (1) US6212930B1 (en)
EP (1) EP0885074B1 (en)
JP (1) JP2000506781A (en)
KR (1) KR100491847B1 (en)
DE (2) DE19608551A1 (en)
ES (1) ES2140213T3 (en)
WO (1) WO1997032678A1 (en)

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Also Published As

Publication number Publication date
ES2140213T3 (en) 2000-02-16
US6212930B1 (en) 2001-04-10
DE19608551A1 (en) 1997-09-11
WO1997032678A1 (en) 1997-09-12
EP0885074B1 (en) 2000-01-05
JP2000506781A (en) 2000-06-06
KR19990087433A (en) 1999-12-27
KR100491847B1 (en) 2005-09-02
DE59700973D1 (en) 2000-02-10

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