DE121604C - - Google Patents

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Publication number
DE121604C
DE121604C DENDAT121604D DE121604DA DE121604C DE 121604 C DE121604 C DE 121604C DE NDAT121604 D DENDAT121604 D DE NDAT121604D DE 121604D A DE121604D A DE 121604DA DE 121604 C DE121604 C DE 121604C
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DE
Germany
Prior art keywords
workpiece
die
extensions
punching
mandrels
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.)
Active
Application number
DENDAT121604D
Other languages
German (de)
Publication of DE121604C publication Critical patent/DE121604C/de
Active legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/10Piercing billets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

Patenτ-AnsρRUgh:Patenτ-AnsρRUgh:

Verfahren zur Herstellung von Hohlkörpern im kalten und erhitzten Zustande, dadurch gekennzeichnet, dafs das zu durchlochende Werkstück zuerst in getheilten Gesenken durch Vorlochdorne mit Ansätzen (f) versehen wird, welche dazu bestimmt sind, das Werkstück bei dem darauf folgenden vollständigen Durchlochen in eintheiligen Arbeitsgesenken zu halten.Process for the production of hollow bodies in the cold and heated state, characterized in that the workpiece to be pierced is first provided in divided dies by pre-piercing mandrels with attachments (f) which are intended to be used in the subsequent complete piercing of the workpiece in one-part working dies keep.

Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Bei der Herstellung von Hohlkörpern aus Metall durch Lochen ist es von wesentlicher Bedeutung, dafs die Werkstücke genau centrirt sind und dafs dem durch das lochende Werkzeug verdrängten Material genügend freier Raum zur Bewegung offen bleibt, ohne die Gesenkwand wesentlich zu beanspruchen.It is essential in the manufacture of hollow metal bodies by punching Significance that the work pieces are precisely centered and that this is due to the punching tool displaced material remains open enough free space for movement without the die wall essential to claim. •Nun leiden die bekannten Verfahren, welche mit Gesenken arbeiten, an dein Uebelstand, dafs das verdrängte Material an den Gesenkwänden haften bleibt, was gegenüber dem Lochen auf freiem Ambos natürlich einen Nachtheil bedeutet. • Now the well-known methods which work with dies suffer from the disadvantage that they are the displaced material sticks to the die walls, which is opposite to the punching a free anvil is of course a disadvantage. Das neue Verfahren besteht wesentlich im Folgenden:The new procedure consists essentially of the following: Das Werkstück α wird zuerst centrirt und dann gelocht; die einzelnen Stadien des Vorganges finden sich in der beiliegenden Zeichnung schematisch dargestellt.The workpiece α is first centered and then punched; the individual stages of the process are shown schematically in the accompanying drawing. Fig. ι veranschaulicht ein zweitheiliges Gesenk b, in welches das Werkstück α dicht pafst."Fig. Ι illustrates a two-part die b, in which the workpiece α fits tightly. " Je nachdem es sich darum handelt, ob Hohlkörper mit oder ohne Boden herzustellen sind, weisen diese Gesenke an beiden Seiten (Fig. 1) oder nur an einer Seite (Fig. 4) Erweiterungen c auf. Ist das Werkstück in das Gesenk eingebracht, dann wird unter Einwirkung der Dorne d das Centriren vorgenommen , wobei das durch die Dorne verdrängte Material in die Erweiterungen c tritt und auf diese Weise Ansätze/ des Werkstückes bildet (Fig. 2); natürlich entspricht das Volumen der Erweiterungen c dem Volumen des durch den Dorn d gebildeten Loches g. Depending on whether hollow bodies are to be produced with or without a base, these dies have extensions c on both sides (FIG. 1) or only on one side (FIG. 4). Once the workpiece has been placed in the die, centration is carried out under the action of the mandrels d, the material displaced by the mandrels entering the widenings c and in this way forming attachments / of the workpiece (FIG. 2); of course, the volume of the extensions c corresponds to the volume of the hole g formed by the mandrel d. Das Werkstück ist nunmehr in die in Fig. 2 dargestellte Form gebracht und wird sodann in ein geschlossenes Gesenk e eingesetzt, Fig. 3, dessen lichte Weite dem äufseren Durchmesser der Erweiterungen c bezw. des Ansatzes f des Werkstückes α entspricht.The workpiece is now brought into the position shown in Fig. 2 shape and is then inserted into a closed die e, Fig. 3, the clear width of the outward diameter of the extensions c BEZW. of the approach f of the workpiece α corresponds. Es ist klar, dafs das Werkstück α durch einfaches Einsetzen in das Gesenk e genau centrirt ist. Bei weiterem Vordringen der Dorne d in das Innere des massiven Metallkörpers wird das Material in den Hohlraum h gedrängt und ist dabei ohne Kollision mit den Wänden der Gesenke frei beweglich.It is clear that the workpiece α is precisely centered by simply inserting it into the die e. As the mandrels d penetrate further into the interior of the solid metal body, the material is forced into the cavity h and can be moved freely without colliding with the walls of the dies. Für Hohlkörper mit geschlossenem Boden ergiebt sich das Verfahren ohne Weiteres.The procedure is straightforward for hollow bodies with a closed bottom. Fig. 4 zeigt ein getheiltes Gesenk, welches nur an der Oberseite die Erweiterungen c aufweist. Fig. 4 shows a divided die, which has the extensions c only on the top. Fig. 5 veranschaulicht das Werkstück nach erfolgtem Centriren und Lochen undFig. 5 illustrates the workpiece after centering and punching and Fig. 6 endlich das geschlossene Gesenk, bei welchem eine centrale Vertiefung angebracht ist, in welche der Untertheil des Werkstückes eintritt.Fig. 6, finally, the closed die, in which a central depression is made is into which the sub-part of the workpiece enters.
DENDAT121604D Active DE121604C (en)

Publications (1)

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DE121604C true DE121604C (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099317B (en) * 1953-07-03 1961-02-09 Max Liebergeld Vorwerkstueck for the production of hollow bodies from steel by cold pressing in the die
DE1114371B (en) * 1953-11-03 1961-09-28 Phoenix Rheinrohr Ag Polygonal block to be punched centrally in a punch press
DE1235113B (en) * 1961-12-29 1967-02-23 Ind De Prec Marti I P M S A Process for cold punching high-alloy steel
DE1299590B (en) * 1964-09-11 1969-07-24 Mannesmann Meer Ag Hole press for the production of hollow blocks
EP1193720A1 (en) * 2000-04-25 2002-04-03 Japan Casting & Forging Corporation Radioactive substance containment vessel, and radioactive substance containment vessel producing device and producing method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1099317B (en) * 1953-07-03 1961-02-09 Max Liebergeld Vorwerkstueck for the production of hollow bodies from steel by cold pressing in the die
DE1114371B (en) * 1953-11-03 1961-09-28 Phoenix Rheinrohr Ag Polygonal block to be punched centrally in a punch press
DE1235113B (en) * 1961-12-29 1967-02-23 Ind De Prec Marti I P M S A Process for cold punching high-alloy steel
DE1299590B (en) * 1964-09-11 1969-07-24 Mannesmann Meer Ag Hole press for the production of hollow blocks
EP1193720A1 (en) * 2000-04-25 2002-04-03 Japan Casting & Forging Corporation Radioactive substance containment vessel, and radioactive substance containment vessel producing device and producing method
US7462853B2 (en) 2000-04-25 2008-12-09 Mitsubishi Heavy Industries, Ltd. Radioactive substance containment vessel, and radioactive substance containment vessel producing device and producing method
US7485884B2 (en) 2000-04-25 2009-02-03 Mitsubishi Heavy Industries Ltd. Radioactive substance container, manufacturing apparatus thereof and manufacturing method thereof
US8661867B2 (en) 2000-04-25 2014-03-04 Mitsubishi Heavy Industries, Ltd. Radioactive substance container, manufacturing apparatus thereof and manufacturing method thereof
EP1193720B1 (en) * 2000-04-25 2017-01-11 Japan Casting & Forging Corporation Billet for a radioactive substance containment vessel producing method

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