DE10308849A1 - Production procedure for producing hollow body from e.g. solid bar, involves cooling formation area of solid bar during formation of hollow section in order to improve firmness and ductility of hollow body - Google Patents
Production procedure for producing hollow body from e.g. solid bar, involves cooling formation area of solid bar during formation of hollow section in order to improve firmness and ductility of hollow body Download PDFInfo
- Publication number
- DE10308849A1 DE10308849A1 DE10308849A DE10308849A DE10308849A1 DE 10308849 A1 DE10308849 A1 DE 10308849A1 DE 10308849 A DE10308849 A DE 10308849A DE 10308849 A DE10308849 A DE 10308849A DE 10308849 A1 DE10308849 A1 DE 10308849A1
- Authority
- DE
- Germany
- Prior art keywords
- hollow body
- unit
- semifinished product
- solid bar
- semi
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/10—Piercing billets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
Abstract
Description
Die Erfindung betrifft ein Verfahren zur umformenden Herstellung form- und maßgenauer, rotationssymmetrischer Hohlkörper aus massivem stangenförmigen Halbzeug und eine zugehörige Vorrichtung, wobei das Halbzeug im Vorwärtshub durch Bohrungsdrücken unter Verwendung eines Drückdornes und eines, mindestens zwei Drückrollen aufweisenden, Rollenschlittens zu einem Hohlkörper umgeformt wird.The invention relates to a method for reshaping production dimensionally accurate and dimensionally accurate, rotationally symmetrical hollow body made of solid rod-shaped Semifinished product and an associated Device, wherein the semifinished product in the forward stroke by drilling under pressure Use of a spinning mandrel and one, at least two spinning rollers having, roller carriage is formed into a hollow body.
Aus der
Bei Versuchen hat sich gezeigt, dass sich nicht alle Stähle zum Bohrungsdrücken eignen. Zum Beispiel kommt es bei den mikrolegierten ausscheidungshärtbaren ferritisch-perlitischen Stählen (AFP-Stahl) zum Prozessversagen. Grund dafür ist, dass sich die durch die Umformung eingebrachte Energie zum Teil in Wärmeenergie umwandelt. Durch die Temperaturerhöhung reduziert sich die Fließspannung. Der AFP-Stahl weist ein lokales Maximum des Umformwiderstandes bei ca. 300 – 400 °C von 800 – 1000 MPa auf. Die Überbrückung dieses Sattels ist technologisch äußerst schwierig.Experiments have shown that not all steels for drilling pressure suitable. For example, it comes with the microalloy precipitation hardenable ferritic-perlitic steels (AFP steel) to process failure. the reason for this is that the energy introduced by the transformation to the Part in heat energy transforms. The temperature increase reduces the yield stress. The AFP steel has a local maximum of forming resistance about 300 - 400 ° C from 800 - 1000 MPa on. Bridging this Sattels is technologically very difficult.
Aufgabe der Erfindung ist es, ein Verfahren zur umformenden Herstellung form- und maßgenauer rotationssymmetrischer Hohlkörper aus massivem stangenförmigen Halbzeug und eine zugehörige Vorrichtung, wobei das Halbzeug im Vorwärtshub durch Bohrungsdrücken unter Verwendung eines Drückdornes und eines, mindestens zwei Drückrollen aufweisenden, Rollenschlittens zu einem Hohlkörper umgeformt wird, zu entwickeln, wodurch es möglich ist, den Umformwiderstand für den Umformvorgang zu senken.The object of the invention is a Process for transforming production dimensionally accurate and dimensionally accurate rotationally symmetrical hollow body made of solid rod-shaped Semifinished product and an associated Device, wherein the semifinished product in the forward stroke by drilling under pressure Use of a spinning mandrel and one, at least two spinning rollers having, roller carriage is reshaped to form a hollow body to develop which makes it possible the forming resistance for to reduce the forming process.
Die Aufgabe wird durch die Merkmale
des kennzeichnenden Teils in Verbindung mit den Merkmalen des Oberbegriffes
des Patentanspruches
Nachfolgend wird die Erfindung anhand eines Ausführungsbeispieles näher erläutert. Die dazugehörige Zeichnung zeigt eine Teilansicht einer Vorrichtung zum Herstellen form- und maßgenauer rotationssymmetrischer Hohlkörper.The invention is based on an embodiment explained in more detail. The associated Drawing shows a partial view of a device for manufacturing dimensional and dimensional accuracy rotationally symmetrical hollow body.
Ein stangenförmiges Halbzeug
Durch die thermomechanische Behandlung während der
umformenden Herstellung form- und maßgenauer, rotationssymmetrischer
Hohlkörper
- 11
- Halbzeugsemis
- 22
- Wärmeeinheitthermal unit
- 33
- Kühleinheitcooling unit
- 44
- Kühleinheitcooling unit
- 55
- Erwärmungseinheitheating unit
- 66
- ringförmige Kühleinheitannular cooling unit
- 77
- Drückdornspinning mandrel
- 88th
- Schlittencarriage
- 99
- Drückrollenspinning rollers
- 1010
- Spannfutterchuck
- 1111
- Rollenschlittenroll carriage
- 1212
- Lagercamp
- 1313
- Lagerungstorage
- 1414
- Befestigungattachment
- 1515
- Befestigungattachment
- 1616
- Umformbereichforming region
- 1717
- Hohlkörperhollow body
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10308849A DE10308849B4 (en) | 2003-02-27 | 2003-02-27 | Process for the forming production dimensionally accurate and dimensionally accurate, rotationally symmetrical hollow body and apparatus for carrying out the method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10308849A DE10308849B4 (en) | 2003-02-27 | 2003-02-27 | Process for the forming production dimensionally accurate and dimensionally accurate, rotationally symmetrical hollow body and apparatus for carrying out the method |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10308849A1 true DE10308849A1 (en) | 2004-09-09 |
DE10308849B4 DE10308849B4 (en) | 2013-10-31 |
Family
ID=32842035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10308849A Expired - Fee Related DE10308849B4 (en) | 2003-02-27 | 2003-02-27 | Process for the forming production dimensionally accurate and dimensionally accurate, rotationally symmetrical hollow body and apparatus for carrying out the method |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10308849B4 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1795277A1 (en) * | 2005-12-07 | 2007-06-13 | Repkon Machine and Tool Industry & Trade Ltd. | Flow-turning machine |
DE102006031564A1 (en) * | 2006-07-07 | 2008-01-10 | Gesenkschmiede Schneider Gmbh | Method for producing a rotationally symmetrical part, in particular shaft |
DE102008036226A1 (en) * | 2008-08-02 | 2010-02-04 | Volkswagen Ag | Hollow shaft i.e. transmission shaft, manufacturing method for motor vehicle, involves transforming reform into hollow intermediate form and performing rotary swaging of hollow intermediate form |
EP3106240A1 (en) | 2015-06-15 | 2016-12-21 | Fundacíon Tecnalia Research & Innovation | Rotary extrusion machine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019106214A1 (en) * | 2019-03-12 | 2020-09-17 | Federal-Mogul Valvetrain Gmbh | Process for the production of a hollow valve for internal combustion engines |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52152814A (en) * | 1976-06-14 | 1977-12-19 | Nippon Steel Corp | Thermo-mechanical treatment of seamless steel pipe |
DE4205675C2 (en) * | 1992-02-25 | 1995-04-20 | Schwager Aribert Prof Dr Ing H | Process for the reshaping production of shape and dimensionally accurate, rotationally symmetrical hollow bodies made of solid semi-finished products |
WO1993018870A1 (en) * | 1992-03-23 | 1993-09-30 | Mosey George N | Piercing mill for seamless tube manufacture |
JP2000176511A (en) * | 1998-12-17 | 2000-06-27 | Nkk Corp | Method for piercing billet |
-
2003
- 2003-02-27 DE DE10308849A patent/DE10308849B4/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1795277A1 (en) * | 2005-12-07 | 2007-06-13 | Repkon Machine and Tool Industry & Trade Ltd. | Flow-turning machine |
DE102006031564A1 (en) * | 2006-07-07 | 2008-01-10 | Gesenkschmiede Schneider Gmbh | Method for producing a rotationally symmetrical part, in particular shaft |
US8312750B2 (en) | 2006-07-07 | 2012-11-20 | Gesenkschmiede Schneider Gmbh | Method for the production of a rotationally symmetrical part, and part produced according to said method |
DE102008036226A1 (en) * | 2008-08-02 | 2010-02-04 | Volkswagen Ag | Hollow shaft i.e. transmission shaft, manufacturing method for motor vehicle, involves transforming reform into hollow intermediate form and performing rotary swaging of hollow intermediate form |
DE102008036226B4 (en) | 2008-08-02 | 2018-12-27 | Volkswagen Ag | Method for producing a hollow shaft |
EP3106240A1 (en) | 2015-06-15 | 2016-12-21 | Fundacíon Tecnalia Research & Innovation | Rotary extrusion machine |
WO2016202551A1 (en) | 2015-06-15 | 2016-12-22 | Fundación Tecnalia Research & Innovation | Rotary extrusion machine and method of using such a machine |
Also Published As
Publication number | Publication date |
---|---|
DE10308849B4 (en) | 2013-10-31 |
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Legal Events
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8110 | Request for examination paragraph 44 | ||
R081 | Change of applicant/patentee |
Owner name: MEYER, LOTHAR W., DR. ING., DE Free format text: FORMER OWNER: TECHNISCHE UNIVERSITAET CHEMNITZ, 09111 CHEMNITZ, DE Effective date: 20110728 Owner name: MASEK, BOHUSLAV, DR. ING., CZ Free format text: FORMER OWNER: TECHNISCHE UNIVERSITAET CHEMNITZ, 09111 CHEMNITZ, DE Effective date: 20110728 Owner name: MAHN, UWE, DR. ING., DE Free format text: FORMER OWNER: TECHNISCHE UNIVERSITAET CHEMNITZ, 09111 CHEMNITZ, DE Effective date: 20110728 Owner name: LOTHAR W. MEYER, DE Free format text: FORMER OWNER: TECHNISCHE UNIVERSITAET CHEMNITZ, 09111 CHEMNITZ, DE Effective date: 20110728 Owner name: BOHUSLAV MASEK, CZ Free format text: FORMER OWNER: TECHNISCHE UNIVERSITAET CHEMNITZ, 09111 CHEMNITZ, DE Effective date: 20110728 Owner name: UWE MAHN, DE Free format text: FORMER OWNER: TECHNISCHE UNIVERSITAET CHEMNITZ, 09111 CHEMNITZ, DE Effective date: 20110728 |
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Representative=s name: FINDEISEN HUEBNER NEUMANN, DE Effective date: 20110728 Representative=s name: PATENTANWAELTE FINDEISEN & NEUMANN, DE Effective date: 20110728 Representative=s name: FINDEISEN HUEBNER NEUMANN, 09112 CHEMNITZ, DE |
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Free format text: PREVIOUS MAIN CLASS: B21B0017000000 Ipc: B21B0019040000 |
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Free format text: PREVIOUS MAIN CLASS: B21B0017000000 Ipc: B21B0019040000 Effective date: 20120302 |
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R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20140201 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |