DE741584C - Device for pressing hollow bodies closed at one end - Google Patents

Device for pressing hollow bodies closed at one end

Info

Publication number
DE741584C
DE741584C DER112832D DER0112832D DE741584C DE 741584 C DE741584 C DE 741584C DE R112832 D DER112832 D DE R112832D DE R0112832 D DER0112832 D DE R0112832D DE 741584 C DE741584 C DE 741584C
Authority
DE
Germany
Prior art keywords
teeth
die
hollow bodies
pressing hollow
bodies closed
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.)
Expired
Application number
DER112832D
Other languages
German (de)
Inventor
Fritz Kuehna
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.)
Rheinmetall AG
Original Assignee
Rheinmetall Borsig 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 Rheinmetall Borsig AG filed Critical Rheinmetall Borsig AG
Priority to DER112832D priority Critical patent/DE741584C/en
Application granted granted Critical
Publication of DE741584C publication Critical patent/DE741584C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • B21K21/14—Shaping end portions of hollow articles closed or substantially-closed ends, e.g. cartridge bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
    • B21J1/025—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough affecting grain orientation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/06—Shaping thick-walled hollow articles, e.g. projectiles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Description

Vorrichtung zum Pressen einendig geschlossener Hohlkörper Gegenstand des Patentes 711 907 ist eine Vorrichtung zum Pressen einendig geschlossener Hohlkörper aus einem in die Matrize eingelegten Block, dessen Werkstoff am Stempel hochsteigt. Bei dieser Vorrichtung wird durch stufenförmige Ausnehmungen am Matrizenboden der bei der bisherigen Arbeitsweise auftretenle schädliche quer gerichtete Faserverlauf in der Zylinderwandung dicht oberhalb des Bodens beseitigt, indem einerseits das Wegfließen des 'Werkstoffes am 1Iatrizenboden erschwert und andererseits das Abfließen an der Dornstirnfläche beschleunigt wird.Device for pressing hollow bodies closed at one end The subject of patent 711 907 is a device for pressing hollow bodies closed at one end from a block inserted into the die, the material of which rises on the punch. In this device, step-shaped recesses on the die base eliminate the damaging, transversely directed fiber course in the cylinder wall just above the base, on the one hand making it more difficult for the material to flow away on the die base and on the other hand accelerating the flow on the face of the mandrel.

Die Erfindung betrifft eine weitere Ausgestaltung der Vorrichtung nach dem Patent 7119o;. Durch eingehende Versuche wurde gefunden, dar der Matrizenboden auch mit sägezalinartigen Vorsprüngen, allein oder in Vereinigung finit den stufenförmigen Ausnehniungeu, versehen werden kann.The invention relates to a further embodiment of the device according to the 7119o patent ;. Thorough experiments have shown that the bottom of the mold is also with sawzaline-like projections, alone or in combination finite the step-shaped Ausnehniungeu, can be provided.

In der Zeichnung sind beispielsweise die Bodenstucke von drei Hohlkörpern dargestellt, die mit Hilfe von drei verschiedenen Matrizenböden gemäß der Erfindung hergestellt sind.In the drawing, for example, the floor pieces of three hollow bodies are shown, with the help of three different matrix floors according to the invention are made.

Bei der Herstellung des Hohlkörpers nach Fig. i ist ein flacher Matrizenboden verwendet worden, welcher mit schrägen zahnartigen Erhebungen versehen ist. Die entsprechenden Einschnitte I im Boden 2 des Hohlkörpers sind durch diese Erhebungen hervorgerufen. Die Schrägung der Einschnitte i ist links-und rechtsseitig der Mittelachse entgegengesetzt zueinander gerichtet.In the manufacture of the hollow body according to FIG. I, there is a flat die base has been used, which is provided with inclined tooth-like elevations. the corresponding incisions I in the bottom 2 of the hollow body are through these elevations evoked. The inclination of the incisions i is on the left and right of the central axis directed opposite to each other.

Der Hohlkörper nach Fig. 2 hat am Boden stufenförmige Ausnehmungen 3 und zahnartige Erhebungen 2a.The hollow body according to FIG. 2 has step-shaped recesses on the bottom 3 and tooth-like elevations 2a.

Bei dem Boden des Hohlkörpers nach Fig.3 wechseln stufenförmige Ausnehmungen 3 mit zahnartigen Erhebungen 2, 2a Der .durch diese Ausbildung des Matrizenbodens herbeigeführte Faserverlauf ist günstig, da die Fasern parallel zur Mantellinie gelenkt wurden.In the bottom of the hollow body according to FIG. 3, step-shaped recesses 3 alternate with tooth-like elevations 2, 2a. The fiber course brought about by this formation of the die base is favorable because the fibers were directed parallel to the surface line.

Die Erfindung ist nicht auf diese Ausführungsbeispielie beschränkt. Es können auch heliebige andere Oberflächenformen in beliebiger Anwendung verwendet werden, entsprechend dem jeweiligen Zweck. Sie kann auch sinngemäß) zur Fertigung von einseitig geschlossenen Hohlkörpern mit beliebigen, nicht runden Formen und Querschnitten verwendet werden.The invention is not restricted to this exemplary embodiment. Any other surface shape can also be used in any application according to the respective purpose. You can also analogously) for production of hollow bodies closed on one side with any, non-round shapes and Cross sections are used.

Claims (1)

PATENTANSPRÜCHE: 1. Vorrichtung zum Pressen einendig geschlossener Hohlkörper aus einem in die Matrize eingelegten Block, dessen Werkstoff am Preßstempel hochsteigt und durch stufenförinigeAusdrehungen des Matrizenbodeiis im Fließen an dieser Stelle gehemmt, an der Dornstirnfläche aber zum schnelleren Abfließen in die Zylindermantelrichtttng gebracht wird, nach Patent 711 907, dadurch gekennzeichnet, daß der Matrizenboden zusätzlich zu den stufenförmigen Ausdrehungen oder als Ersatz für diese finit Zähnen (2) versehen ist. Vorrichtung nach Anspruch i, dadurch gekennzeichnet, daß an dem VIatrizenboden stufenförmige Ausnehmungen (3) mit Zähnen (:2, :2'1) abwechseln (Fig. 2 und 3). 3. Vorrichtung nach Anspruch i und 2, dadurch gekennzeichnet, daß die beiderseitigen Zähne (2, 2a; Fig. 2, 3) mit ihrer Schrägung von der 'Mittelachse abgewendet sind. -Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Erteilungsverfahren keine Druckschriften in Betracht gezogen worden. PATENT CLAIMS: 1. Device for pressing hollow body closed at one end from a block inserted into the die, the material of which rises on the ram and is inhibited from flowing at this point by stepped turning of the die body, but at the mandrel face it is brought to flow faster into the cylinder jacket direction, according to the patent 711 907, characterized in that the die base is provided in addition to the stepped recesses or as a replacement for these finite teeth (2). Device according to Claim i, characterized in that step-shaped recesses (3) with teeth (: 2,: 2'1) alternate on the V-matrix base (Figs. 2 and 3). 3. Apparatus according to claim i and 2, characterized in that the two-sided teeth (2, 2a; Fig. 2, 3) are turned away with their inclination from the 'central axis. - To differentiate the subject matter of the application from the state of the art, no publications were taken into account in the granting procedure.
DER112832D 1942-05-01 1942-05-01 Device for pressing hollow bodies closed at one end Expired DE741584C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER112832D DE741584C (en) 1942-05-01 1942-05-01 Device for pressing hollow bodies closed at one end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER112832D DE741584C (en) 1942-05-01 1942-05-01 Device for pressing hollow bodies closed at one end

Publications (1)

Publication Number Publication Date
DE741584C true DE741584C (en) 1944-12-16

Family

ID=7421996

Family Applications (1)

Application Number Title Priority Date Filing Date
DER112832D Expired DE741584C (en) 1942-05-01 1942-05-01 Device for pressing hollow bodies closed at one end

Country Status (1)

Country Link
DE (1) DE741584C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968459C (en) * 1949-01-21 1958-02-20 Bauer & Schaurte Process for the production of high-strength bolt workpieces with heads, such as screws and rivets, by cold forming
DE2706849A1 (en) * 1976-04-30 1977-11-10 Yoshitaka Nakanishi METHOD, PRESSING TOOL AND PRESSING DEVICE FOR THE PRODUCTION OF COUNTERSET HOLES
EP0117849A2 (en) * 1983-02-25 1984-09-05 Simmel Difesa S.R.L. Convex type bottom with a bearing rim for bottles for industrial gases obtained by means of hot forging from a steel billet and fixture for forming said bottom

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE968459C (en) * 1949-01-21 1958-02-20 Bauer & Schaurte Process for the production of high-strength bolt workpieces with heads, such as screws and rivets, by cold forming
DE2706849A1 (en) * 1976-04-30 1977-11-10 Yoshitaka Nakanishi METHOD, PRESSING TOOL AND PRESSING DEVICE FOR THE PRODUCTION OF COUNTERSET HOLES
EP0117849A2 (en) * 1983-02-25 1984-09-05 Simmel Difesa S.R.L. Convex type bottom with a bearing rim for bottles for industrial gases obtained by means of hot forging from a steel billet and fixture for forming said bottom
EP0117849A3 (en) * 1983-02-25 1986-06-04 Simmel S.P.A. Convex type bottom with a bearing rim for bottles for industrial gases obtained by means of hot forging from a steel billet and fixture for forming said bottom

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