DE107130C - - Google Patents
Info
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 240000004282 Grewia occidentalis Species 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture 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
- B21C37/14—Making 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)
Publications (1)
Publication Number | Publication Date |
---|---|
DE107130C true DE107130C (en) |
Family
ID=377226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT107130D Active DE107130C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE107130C (en) |
Cited By (1)
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 |
-
0
- DE DENDAT107130D patent/DE107130C/de active Active
Cited By (1)
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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