EP2886810A1 - Method for the production of a cylindrical component - Google Patents
Method for the production of a cylindrical component Download PDFInfo
- Publication number
- EP2886810A1 EP2886810A1 EP14193323.4A EP14193323A EP2886810A1 EP 2886810 A1 EP2886810 A1 EP 2886810A1 EP 14193323 A EP14193323 A EP 14193323A EP 2886810 A1 EP2886810 A1 EP 2886810A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- shell
- housing
- cylindrical
- flat blank
- 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
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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
- B21K1/00—Making machine elements
- B21K1/26—Making machine elements housings or supporting parts, e.g. axle housings, engine mountings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/01—Bending sheet metal along straight lines, e.g. to form simple curves between rams and anvils or abutments
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/4932—Turbomachine making
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Forging (AREA)
Abstract
Die Erfindung betrifft ein Verfahren zur Herstellung eines zylinderförmigen Bauteils, insbesondere von Strömungsmaschinen. Dabei wird ein erwärmter Rohling bereitgestellt. Dann wird der Rohling zu einem flachen Rohteil (2) umgeformt. Anschließend wird das flache Rohteil (2) zu einer zylindrischen Halbschale (40) gebogen und/oder gerollt.The invention relates to a method for producing a cylindrical component, in particular of turbomachines. In this case, a heated blank is provided. Then the blank is formed into a flat blank (2). Subsequently, the flat blank (2) is bent and / or rolled into a cylindrical half-shell (40).
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines zylinderförmigen Bauteils nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for producing a cylindrical component according to the preamble of claim 1.
Rohteile für zylinderförmige Gehäuse, wie z. B. Tuebwerksgehäuse, werden typischerweise ringgewalzt. Dabei wird der erwärmte torus-förmige Rohling zwischen einer innerhalb des Rohlings angeordneten zylindrischen Dornwalze und einer außerhalb des Rohlings angeordneten zylindrischen Hauptwalze gewalzt, wobei die Achsen der Dornwalze und der Hauptwalze parallel zur Achse des zu formenden Werkstücks ist. Gleichzeitig sind auf der zum Rohling diametral gegenüberliegenden Seite oberhalb und unterhalb des Rohlings zwei konisch-förmige Axialwalzen angeordnet. Die Dornwalze und die Hauptwalze bestimmen die radiale Dicke des Rohteils (auch als Wandstärke des Rohteils bezeichnet) und die beiden Axialwalzen bestimmen die axiale Länge des Rohteils. Aus Festigkeitsgründen weist das Gehäuse Rippen auf, so dass die Wandstärke des Rohteils mindestens so groß sein muss, wie die Rippenhöhe. Insbesondere weisen zylinderförmige Gehäuse typischerweise keine einheitliche Dicke auf. In die zylinderförmige Außenwandung des Rohteils werden nach dem Ringwalzen durch spanende Bearbeitung, wie z.B. Fräsen, die Rippen herausgearbeitet. Dabei ist insbesondere nachteilig, da ein sehr großes Spanvolumen erzeugt wird. Ferner muss bei längsgeteilten Gehäusen der Ring zu einer Halbschale aufgeschnitten werden, so dass ein weiterer Arbeitsschritt anfällt, um das Endprodukt herstellen zu können.Raw parts for cylindrical housing, such. B. Tuebwerks housing are typically ring-rolled. In this case, the heated toroidal blank is rolled between a cylindrical mandrel roller disposed within the blank and a cylindrical main roller disposed outside the blank, the axes of the mandrel roller and the main roller being parallel to the axis of the workpiece to be formed. At the same time, two conical-shaped axial rollers are arranged on the side diametrically opposite the blank above and below the blank. The mandrel roll and the main roll determine the radial thickness of the blank (also referred to as the wall thickness of the blank) and the two axial rolls determine the axial length of the blank. For reasons of strength, the housing has ribs, so that the wall thickness of the blank must be at least as large as the rib height. In particular, cylindrical housings typically do not have a uniform thickness. In the cylindrical outer wall of the blank after ring rolling by machining, such. Milling, the ribs worked out. It is particularly disadvantageous because a very large chip volume is generated. Furthermore, in the case of longitudinally split housings, the ring must be cut into a half shell, so that a further working step is required in order to be able to produce the end product.
Ferner müssen insbesondere Gehäuse von Strömungsmaschinen das sogenannte Durchschlagskriterium (containment) erfüllen. Dies bedeutet, dass im Gehäuse befindliche rotierende Bauteile bei einem Defekt, z.B. Bruch einer Laufschaufel, nicht durch das Gehäuse dringen dürfen. Werden die Gehäuse gegossen, so dass das Durchschlagskriteuum nur durch eine entsprechend große Masse erreicht werden kann. Dies hat den Nachteil, dass die Gehäuse schwerer sind als spanend hergestellte Gehäuse.Furthermore, in particular housings of turbomachinery must meet the so-called breakdown criterion (containment). This means that in the housing located rotating components in case of a defect, e.g. Break a blade, not allowed to penetrate through the housing. If the housing is cast so that the Durchschlagkriteuum can only be achieved by a correspondingly large mass. This has the disadvantage that the housing are heavier than machined housing.
Somit liegt der vorliegenden Erfindung die Aufgabe zu Grunde, ein Verfahren vorzustellen, das bei der Herstellung von zylinderförmigen Bauteilen weniger Spanvolumen entstehen und das in der Herstellung wirtschaftlicher ist.Thus, the present invention is based on the object to present a method which results in the production of cylindrical components less chip volume and is more economical to manufacture.
Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.The object is solved by the features of claim 1.
Die Erfindung betrifft eine Verfahren zur Herstellung eines zylinderförmigen Bauteils, insbesondere von Strömungsmaschinen. Zuerst wird ein erwärmter Rohling bereitgestellt. Dann wird der Rohling zu einem flachen Rohteil druckumgeformt. Anschließend wird das flache Rohteil zu einer zylindrischen Halbschale gebogen und/oder gerollt. Dabei kann der Rohling über die Rekristallisationstemperatur des Rohlingmaterials erwärmt werden. Dies hat den Vorteil, dass gegenüber dem Ringwalzen das Aufschneiden zu einer Halbschale wegfällt.The invention relates to a method for producing a cylindrical component, in particular of turbomachines. First, a heated blank is provided. Then the blank is pressure-formed into a flat blank. Subsequently, the flat blank is bent into a cylindrical half-shell and / or rolled. In this case, the blank can be heated above the recrystallization temperature of the blank material. This has the advantage that with respect to the ring rolling cutting to a half-shell is eliminated.
In einer vorteilhaften Ausgestaltung der Erfindung ist das flache Rohteil im Wesentlichen quaderförmig. Dies hat den Vorteil, dass durch die Druckumformung wenig überstehendes Material entsteht und das flache Rohteil eine ähnliche Form aufweist, wie das spätere Endprodukt.In an advantageous embodiment of the invention, the flat blank is substantially cuboid. This has the advantage that little overhanging material is formed by the pressure forming and the flat blank has a similar shape as the later end product.
In einer weiteren vorteilhaften Ausgestaltung der Erfindung weist das flache Rohteil an mindestens einer seiner Konturen ein Aufmaß auf. Dies hat den Vorteil, dass beim Druckumformen die fehlende Maßgenauigkeit damit ausgeglichen werden kann. Dabei kann das Aufmaß zwischen 0 und 10 mm betragen. Insbesondere kann das Aufmaß nur an den Konturen notwendig sein, die später eine Auflagefläche darstellen.In a further advantageous embodiment of the invention, the flat blank on at least one of its contours on an allowance. This has the advantage that when printing, the missing dimensional accuracy can be compensated. The allowance can be between 0 and 10 mm. In particular, the allowance may only be necessary on the contours, which later represent a bearing surface.
In einer weiteren vorteilhaften Ausgestaltung der Erfindung ist in mindestens einer der Oberflächen des Rohteils mindestens eine Rippe und/oder ein Auge geformt. Dabei werden diese Erhebungen (Rippen, Augen bzw. Augansätze) bei der Druckumformung gleich mitgeformt. Dies hat den Vorteil, dass diese Erhebungen nicht aus dem Vollmaterial herausgearbeitet werden müssen. Im Vergleich zum Ringwalzen entsteht kein bzw. kaum Spanvolumen. Dabei können die Erhebungen in vorteilhafterweise in der Oberfläche des Rohteils ohne Aufmaß hergestellt werden, so dass die Rippen, die Augen bzw. Augansätzen nicht nachbearbeitet werden müssen.In a further advantageous embodiment of the invention, at least one rib and / or one eye is formed in at least one of the surfaces of the blank. These elevations (ribs, eyes or eyes) are mitgeformt same during the pressure deformation. This has the advantage that these surveys do not have to be worked out of the solid material. Compared to ring rolling produces no or hardly any chip volume. In this case, the elevations can advantageously be produced in the surface of the blank without oversize, so that the ribs, the eyes or Augansätzen must not be reworked.
In einer weiteren vorteilhaften Ausgestaltung der Erfindung wird mindestens eine Auflagefläche der Halbschale auf ein Endmaß bearbeitet, insbesondere gefräst. Dies ist insbesondere vorteilhaft, weil damit eine höhere Maßgenauigkeit erzielt werden kann, als mit der Druckumformung überhaupt möglich ist. Eine Endbearbeitung ist dann nur noch an den erforderlichen Stellen, wie z.B. die Auflageflächen, notwendig, so dass nur noch ein Mindestmaß an Spanvolumen entsteht.In a further advantageous embodiment of the invention, at least one bearing surface of the half-shell is machined to a final dimension, in particular milled. This is particularly advantageous because it allows a higher dimensional accuracy can be achieved than with the pressure deformation is even possible. A finishing is then only in the required places, such as the bearing surfaces, necessary, so that only a minimum amount of chip volume.
In einer weiteren vorteilhaften Ausgestaltung der Erfindung erfolgt die Druckumformung per Gesenkschmieden. Bei diesem Verfahren ist die Form des Schmiedestücks (Rohteil) als Negativ im Ober- und Untergesenk abgebildet. Vorzugsweise werden geschlossene Gesenke verwendet. Dies hat den Vorteil, dass sehr sparsam mit dem Rohlingsmaterial umgegangen wird, da das Volumen des Rohlings nur etwas größer ist als die fertige Halbschale.In a further advantageous embodiment of the invention, the pressure forming is carried out by drop forging. In this method, the shape of the forging (blank) is shown as a negative in the upper and lower die. Preferably, closed dies are used. This has the advantage that it is handled very sparingly with the blank material, since the volume of the blank is only slightly larger than the finished half-shell.
In einer weiteren vorteilhaften Ausgestaltung der Erfindung weist ein Gehäuse zwei Halbschalen auf. Diese Halbschalen weisen nach der Druckumformung identische Außenkonturen auf. Dies hat den Vorteil, dass die obere Halbschale eines Gehäuses mit denselben Gesenken hergestellt werden kann, wie die untere Halbschale des Gehäuses, so dass nur ein Satz von Gesenken benötigt wird. Dies spart Werkzeugkosten. Die verschiedenen Halbschalen können unterschiedliche Augen für das Anbringen von Haltern aufweisen. Diese Unterschiede werden erst nach der Druckumformung in die entsprechende Halbschale eingearbeitet.In a further advantageous embodiment of the invention, a housing has two half shells. These half-shells have identical outer contours after the pressure deformation. This has the advantage that the upper half-shell of a housing can be made with the same dies as the lower half-shell of the housing, so that only one set of dies is needed. This saves tool costs. The different half shells may have different eyes for attaching holders. These differences are incorporated into the corresponding half shell only after the pressure has been converted.
Weitere Vorteilhafte Ausgestaltung der Erfindung sind in den Unteransprüchen wiedergegeben.Further advantageous embodiment of the invention are given in the dependent claims.
Im Weiteren werden anhand der schematischen Zeichnung bevorzugte Ausführungsbeispiele der Erfindung näher beschrieben. Dabei zeigen:
-
Figur 1 : eine Draufsicht auf ein erfindungsgemäßes Rohteil, und -
Figur 2 : eine Schrägansicht auf eine erfindungsgemäße Halbschale.
-
FIG. 1 a top view of a blank according to the invention, and -
FIG. 2 : An oblique view of a half-shell according to the invention.
In der
An der Außenfläche 12 grenzt entlang der unteren Längskante 6 die vordere ersteAuflagefläche 13. An der Außenfläche 12 grenzt entlang der oberen Längskante 4 die hintere nicht dargestellte zweite Auflagefläche 15. An der Außenfläche 12 grenzt entlang der ersten Querkante 8 die dritte Auflagefläche 17. An der Außenfläche 12 grenzt entlang der zweiten Querkante 10 die vierte nicht dargestellte Auflagefläche 19.On the outer surface 12, along the lower
Zwischen den Flanschansätzen 14 und 16 verlaufen mehrere Querrippen 18 bis 30, die hier parallel zu den Querkanten 8 und 10 verlaufen. Die Lage der Rippen wird typischerweise von den Festigkeitsanforderungen definiert. Dabei können alle Querrippen 18 bis 30 die gleiche Dicke dR aufweisen. Zwischen den Querrippen 22 und 24 sind zwei Augansätze 32 und 34 angeformt, die in einem späteren Verfahrensschritt durchbohrt werden können. Es ist auch denkbar, dass statt Augansätzen 32 und 34 direkt Augen beim Druckumformen erzeugt werden können. Dies würde eine spätere spanende Bearbeitung ersparen (z.B. Bohren).Between the flange lugs 14 and 16 extend a plurality of
Die Querrippen 26 bis 30 können über eine Längsrippe 36 miteinander verbunden sein, wenn dies beispielsweise aus struktmmechanischen Gründen erforderlich ist.The
Die Außenfläche 12 mit allen entsprechenden Konturen, wie Rippen und/oder Augansätzen bzw. Augen, kann vorzugsweise ohne Aufmaß beim Gesenkschmieden hergestellt werden, so dass eine spätere Bearbeitung dieser Ausfläche 12 entfällt.The outer surface 12 with all the corresponding contours, such as ribs and / or eyebrows or eyes, can preferably be produced without oversize for swaging, so that a later processing of this surface 12 is omitted.
Das Rohteil 2 wird dann gebogen bzw. gerollt, so dass die in der
- 22
- Rohteilblank
- 44
- obere Längskanteupper longitudinal edge
- 66
- untere Längskantelower longitudinal edge
- 88th
- erste Querkantefirst transverse edge
- 1010
- zweite Querkantesecond transverse edge
- 1212
- Außenfläche von 2Outer surface of 2
- 1313
- erste Auflageflächefirst contact surface
- 1414
- erster Flanschansatzfirst flange attachment
- 1515
- zweite Auflageflächesecond bearing surface
- 1616
- zweiter Flanschansatzsecond flange attachment
- 1717
- dritte Auflageflächethird contact surface
- 1818
- Querrippetransverse rib
- 1919
- vierte Auflageflächefourth bearing surface
- 2020
- Querrippetransverse rib
- 2222
- Querrippetransverse rib
- 2424
- Querrippetransverse rib
- 2626
- Querrippetransverse rib
- 2828
- Querrippetransverse rib
- 3030
- Querrippetransverse rib
- 3232
- AugansätzeAugansätze
- 3434
- AugansätzeAugansätze
- 3636
- Längsrippelongitudinal rib
- 4040
- Halb schaleHalf shell
- 4242
- Innenfläche der HalbschaleInner surface of the half shell
- 4444
- Absätzeparagraphs
Claims (9)
das flache Rohteil (2) zu einer zylindrischen Halbschale (40) gebogen und/oder gerollt wird.Method for producing a cylindrical component, in particular for turbomachines, with the following steps:
the flat blank (2) is bent and / or rolled into a cylindrical half-shell (40).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013225987.5A DE102013225987B3 (en) | 2013-12-16 | 2013-12-16 | Method for producing a cylindrical component, housing and turbomachine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2886810A1 true EP2886810A1 (en) | 2015-06-24 |
EP2886810B1 EP2886810B1 (en) | 2017-03-15 |
Family
ID=52006811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14193323.4A Not-in-force EP2886810B1 (en) | 2013-12-16 | 2014-11-14 | Method for the production of a cylindrical component |
Country Status (3)
Country | Link |
---|---|
US (1) | US9821368B2 (en) |
EP (1) | EP2886810B1 (en) |
DE (1) | DE102013225987B3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115156854B (en) * | 2022-07-26 | 2024-03-29 | 贵州航天电子科技有限公司 | Processing method of semicircular columnar shell part |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2532738A1 (en) * | 1974-07-22 | 1976-02-12 | Nissan Motor | METHOD OF FORMING A METAL SHEET |
FR2329372A1 (en) * | 1975-11-03 | 1977-05-27 | Hillesheim Hans | PROCESS AND DEVICE FOR PERFORMING INTERRUPTIONS IN A TAPE AND TAPE MATERIAL THUS OBTAINED |
US4801070A (en) * | 1987-05-11 | 1989-01-31 | Rohr Industries, Inc. | Engine duct and case construction |
WO2013023867A1 (en) * | 2011-08-17 | 2013-02-21 | Evonik Röhm Gmbh | Biaxial forming process for thick-walled acrylic sheet |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3992764A (en) * | 1975-09-22 | 1976-11-23 | The Torrington Company | Method of forming a roller cage |
US4083221A (en) * | 1976-07-29 | 1978-04-11 | Duffy Tool & Stamping, Inc. | Parts forming apparatus and method |
JPH07127646A (en) * | 1993-10-29 | 1995-05-16 | Ntn Corp | Retainer for roller bearing |
JP3826995B2 (en) * | 2000-02-16 | 2006-09-27 | トヨタ自動車株式会社 | Manufacturing method of carrier |
US20040250404A1 (en) * | 2003-01-14 | 2004-12-16 | Cripsey Timothy J. | Process for press forming metal tubes |
DE102010005059A1 (en) * | 2010-01-20 | 2011-07-21 | Schaeffler Technologies GmbH & Co. KG, 91074 | Roller bearing cage for cylindrical, needle-shaped rolling element, has body, which consists of band made of flexible material, where recess is inserted in band for forming pocket, and band has band edge extending along periphery |
DE102011004192A1 (en) * | 2011-02-16 | 2012-08-16 | Schaeffler Technologies Gmbh & Co. Kg | planet |
-
2013
- 2013-12-16 DE DE102013225987.5A patent/DE102013225987B3/en not_active Expired - Fee Related
-
2014
- 2014-11-14 EP EP14193323.4A patent/EP2886810B1/en not_active Not-in-force
- 2014-12-08 US US14/563,300 patent/US9821368B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2532738A1 (en) * | 1974-07-22 | 1976-02-12 | Nissan Motor | METHOD OF FORMING A METAL SHEET |
FR2329372A1 (en) * | 1975-11-03 | 1977-05-27 | Hillesheim Hans | PROCESS AND DEVICE FOR PERFORMING INTERRUPTIONS IN A TAPE AND TAPE MATERIAL THUS OBTAINED |
US4801070A (en) * | 1987-05-11 | 1989-01-31 | Rohr Industries, Inc. | Engine duct and case construction |
WO2013023867A1 (en) * | 2011-08-17 | 2013-02-21 | Evonik Röhm Gmbh | Biaxial forming process for thick-walled acrylic sheet |
Also Published As
Publication number | Publication date |
---|---|
US20150165516A1 (en) | 2015-06-18 |
EP2886810B1 (en) | 2017-03-15 |
US9821368B2 (en) | 2017-11-21 |
DE102013225987B3 (en) | 2015-08-06 |
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