DE242905C - - Google Patents
Info
- Publication number
- DE242905C DE242905C DENDAT242905D DE242905DA DE242905C DE 242905 C DE242905 C DE 242905C DE NDAT242905 D DENDAT242905 D DE NDAT242905D DE 242905D A DE242905D A DE 242905DA DE 242905 C DE242905 C DE 242905C
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- die opening
- cutting
- mandrel
- ring
- 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
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 230000000875 corresponding Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process 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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/04—Cutting-off or removing waste
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
Bei der Herstellung von Rohren aus einem Metallblock mittels des Strangpreßverfahrens ist es bekannt, den nach dem Pressen im Aufnehmer verbleibenden Materialrest von dem fertigen Rohre in der Weise abzuschneiden, daß ein lose um den Preßdorn gelegter Ring durch den Preßstempel in die Matrizenöffnung geschoben wird, wobei die Kanten der Matrize und des Ringes als Schneidkanten zurIn the production of pipes from a metal block by means of the extrusion process it is known to remove the remaining material in the receiver after pressing cut off finished tubes in such a way that a ring is loosely placed around the press mandrel is pushed by the ram into the die opening, with the edges of the die and the ring as cutting edges
ίο Wirkung gelangen. Eine derartige Vorrichtung kann den ihr zugedachten Zweck nur dann erfüllen, wenn der Ring wenigstens teilweise in die Matrizen Öffnung eintritt. Da aber die Matrizenöffnung durch den Ring beim Eintritt in dieselbe geschlossen wird, so ist ein weiteres Verdrängen des Metalls und somit ein weiteres Vorgehen des Preßstempels nicht mehr möglich.ίο take effect. Such a device can only fulfill its intended purpose if the ring is at least partially enters the die opening. But there the die opening through the ring when it is closed, there is a further displacement of the metal and further action by the ram is no longer possible.
Um das Abschneiden des fertigen Rohres vom Preßriickstande sicher zu erreichen, wird gemäß der vorliegenden Erfindung der Dorn von da ab, wo das Blockmaterial aus dem Recipienten fast vollständig ausgepreßt ist, so dick gewählt, daß sein Durchmesser dem äußeren Durchmesser des hergestellten Rohres entspricht.In order to achieve the cutting of the finished pipe from the Preßriickstande safely according to the present invention the mandrel from where the block material from the recipient is almost completely squeezed out, chosen so thick that its diameter corresponds to the outer Corresponds to the diameter of the pipe produced.
Die Zeichnung veranschaulicht den betreffenden Teil der Presse zur Durchführung dieses Verfahrens in schematischer Darstellung und im Längsschnitt.The drawing illustrates the relevant part of the press for performing this Process in schematic representation and in longitudinal section.
Es ist hierbei α das zu verarbeitende Blockmaterial, b der Aufnehmer, c der Dorn, d der Preßstempel, e die Matrize und f das hergestellte Rohr. Ist das Blockmaterial a fast ausgepreßt, dann beginnt der von c1 ab dickere Dornteil, welcher, wie erwähnt, dem äußeren Rohrdurchmesser entspricht, das Rohr vom Rückstande abzuschneiden.It is here α the block material to be processed, b the transducer, c the mandrel, d the ram, e the die and f the pipe produced. When the block material a is almost pressed out, the part of the mandrel, which is thicker from c 1 and which, as mentioned, corresponds to the outer pipe diameter, begins to cut off the pipe from the residue.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE242905C true DE242905C (en) |
Family
ID=502074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT242905D Active DE242905C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE242905C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE877435C (en) * | 1949-02-19 | 1953-05-26 | Schloemann Ag | Process for separating the press residue from the pressed pipe on an extruder |
US5290721A (en) * | 1991-06-28 | 1994-03-01 | Sharp Kabushiki Kaisha | Method of making a stacked semiconductor nonvolatile memory device |
-
0
- DE DENDAT242905D patent/DE242905C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE877435C (en) * | 1949-02-19 | 1953-05-26 | Schloemann Ag | Process for separating the press residue from the pressed pipe on an extruder |
US5290721A (en) * | 1991-06-28 | 1994-03-01 | Sharp Kabushiki Kaisha | Method of making a stacked semiconductor nonvolatile memory device |
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