DE107130C - - Google Patents

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Publication number
DE107130C
DE107130C DENDAT107130D DE107130DA DE107130C DE 107130 C DE107130 C DE 107130C DE NDAT107130 D DENDAT107130 D DE NDAT107130D DE 107130D A DE107130D A DE 107130DA DE 107130 C DE107130 C DE 107130C
Authority
DE
Germany
Prior art keywords
masts
flat
cut
lengthways
unopened
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
DENDAT107130D
Other languages
German (de)
Publication of DE107130C publication Critical patent/DE107130C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/14Making tubes from double flat material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

Bei der Herstellung von gewalzten Röhren und Masten aus vorgewalzten doppelten hohlen Streifen bietet die Einführung des zur Aufweitung benutzten Domes, sei es, dafs das Doppelblech über denselben gezogen, oder dafs der Dorn in dasselbe hineingeschoben wird, mehr oder weniger Schwierigkeiten. Dies zu vermeiden, ist der Zweck des vorliegenden Verfahrens, das gleichzeitig den technisch wichtigen Vortheil bietet, dafs, wo solches erwünscht oder erforderlich ist, auch die ' Bildung von gespreizten Füfsen leichter, rascher und billiger ausgeführt werden kann.
Zu dem Zweck verfährt man wie folgt:
Den vorgewalzten hohlen Doppelblechstreifen A (Fig. 1) schneidet man in angemessener Länge xy auf der Hobelmaschine oder mittelst einer Scheere durch, biegt dann die Ecken etwas aufwärts, so dafs der Dorn zur Bildung der Rohrform nun bequem und leichter als beim ganz geschlossenen Doppelblech eingeführt werden kann (Fig. 2 und 3) und also die erste erstrebte Wirkung erzielt ist.
In the manufacture of rolled tubes and masts from pre-rolled double hollow strips, the introduction of the mandrel used for expansion, be it by pulling the double sheet over it or pushing the mandrel into it, presents more or less difficulties. Avoiding this is the purpose of the present process, which at the same time offers the technically important advantage that, where this is desired or necessary, the formation of splayed feet can be carried out more easily, quickly and cheaply.
To do this, proceed as follows:
The pre-rolled hollow double sheet metal strip A (Fig. 1) is cut through to an appropriate length xy on the planing machine or by means of scissors, then the corners are bent a little upwards, so that the mandrel for the formation of the tubular shape can now be inserted comfortably and more easily than with the completely closed double sheet metal can be (Fig. 2 and 3) and thus the first desired effect is achieved.

Soll nun ein so fertiggestelltes und vorbereitetes Rohr gespreizte Füfse erhalten, so werden die geschlitzten Hälften je am äufseren Ende nach links und rechts aus einander gebogen, wie Fig. 4 andeutet, und man erhält als fertiges Product ein Rohr nach Fig. 5 mit gespreizten Enden bezw. mit gespreiztem Fufs.If a pipe that has been finished and prepared in this way is to have spread feet, then so the slotted halves are bent from each other at the outer end to the left and right, as FIG. 4 indicates, and a tube according to FIG. 5 is obtained as the finished product spread ends respectively. with spread foot.

Claims (1)

Pate nt-An spRU ch:Sponsor address: Ein Verfahren zur Herstellung von cylindrischen oder konischen Röhren und Masten (eventuell mit gespreizten Füfsen) aus flach gewalzten Hohlstreifen, dadurch gekennzeichnet, dafs das eine Ende des noch flachen, nicht geöffneten Doppelstreifens auf geeignete Länge in der Mitte der Länge nach geschlitzt oder durchschnitten wird, worauf die so entstehenden vier Ecken nach unten und oben und etwas nach links und rechts geöffnet werden, um bequemen Eingang für den Dorn zu schaffen.A method of making cylindrical or conical tubes and masts (possibly with splayed feet) made of flat rolled hollow strips, characterized by that one end of the still flat, unopened double strip is of a suitable length is slit or cut in the middle lengthways, whereupon the resulting four corners down and up and slightly to the left and right are opened to to create a convenient entrance for the thorn. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT107130D Active DE107130C (en)

Publications (1)

Publication Number Publication Date
DE107130C true DE107130C (en)

Family

ID=377226

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Country Status (1)

Country Link
DE (1) DE107130C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002275B (en) * 1952-05-24 1957-02-14 Gen Motors Corp Process for the production of heat exchangers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1002275B (en) * 1952-05-24 1957-02-14 Gen Motors Corp Process for the production of heat exchangers

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