EP2151289A1 - Method for manufacturing a housing ring - Google Patents

Method for manufacturing a housing ring Download PDF

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Publication number
EP2151289A1
EP2151289A1 EP08014252A EP08014252A EP2151289A1 EP 2151289 A1 EP2151289 A1 EP 2151289A1 EP 08014252 A EP08014252 A EP 08014252A EP 08014252 A EP08014252 A EP 08014252A EP 2151289 A1 EP2151289 A1 EP 2151289A1
Authority
EP
European Patent Office
Prior art keywords
wire
blank
housing ring
bundle
housing
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
Application number
EP08014252A
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German (de)
French (fr)
Other versions
EP2151289B1 (en
Inventor
Horst Stelljes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Presswerk Krefeld & Co KG GmbH
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Presswerk Krefeld & Co KG GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Presswerk Krefeld & Co KG GmbH filed Critical Presswerk Krefeld & Co KG GmbH
Priority to DE502008000496T priority Critical patent/DE502008000496D1/en
Priority to AT08014252T priority patent/ATE462510T1/en
Priority to ES08014252T priority patent/ES2341915T3/en
Priority to EP08014252A priority patent/EP2151289B1/en
Publication of EP2151289A1 publication Critical patent/EP2151289A1/en
Application granted granted Critical
Publication of EP2151289B1 publication Critical patent/EP2151289B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/02—Producing blanks in the shape of discs or cups as semifinished articles for making hollow articles, e.g. to be deep-drawn or extruded
    • 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
    • B21K1/64—Making machine elements nuts
    • B21K1/68—Making machine elements nuts from round or profiled bars

Definitions

  • a method for producing a housing ring that is an annular housing, for example in the form of a collar housing are known per se from the prior art, as well as annular housing, for example in the form of collar housings as such. A separate documentary proof is therefore not required at this point.
  • the method steps listed above are preferably carried out in succession on a multi-stage transverse transport press, so that the housing ring can be completed in only one operation by the method according to the invention, without mechanical work, in particular mechanical reworking being required. Overall, the method according to the invention proves to be easy to handle and economical to carry out.
  • a further advantage of the method according to the invention is that a semifinished product in the form of a wire bundle, a so-called wire coil, can be used as the starting material.
  • the procurement, warehousing and processing can be standardized in an advantageous manner and thus simplified.
  • a housing ring that is an annular housing, for example in the form of a collar housing is carried out by the novel process exclusively by cold forming.
  • a mechanical processing in particular a mechanical post-processing does not take place. Rather, the finished housing ring production takes place in only one machining operation with the following method steps, which are preferably carried out successively on a multi-stage transverse transport press.
  • a blank is first separated from the wire bundle, by shearing.
  • a separation can be done instead of by shearing, for example, by section. It is preferable to use a wire with a diameter of 19 mm, so that the blank is circular in cross-section and has a diameter of 19 mm. The vertical extent of the blank results in dependence of the use-adjustable separation length. This can be adjusted according to the desired manner to be produced housing ring needs. It goes without saying that other wire diameters than 19 mm can be used.
  • the blank end face is planed. This is preferably done by setting.
  • cup-shaped recesses are respectively introduced into the blank end faces, which takes place by combined cup extruding.
  • a method step for forming a circumferential annular groove can be provided by upsetting.
  • a plurality of annular grooves can be formed by a plurality of successive upsetting operations.
  • the method according to the invention is not to be understood as limiting insofar as depending on the type of housing ring it is possible to provide for the formation of an annular groove, a plurality of annular grooves or even no annular groove. Rather, it is of essential importance to the invention that the finished housing ring production takes place solely by cold forming, that is to say a final production is carried out without mechanical reworking.
  • a steel wire made of C15 steel is used as the wire.
  • other types of steel may be used, depending on which material properties the later housing ring should have.
  • a heat treatment This is preferably carried out after the step of planing, that is before the step of the combined cup extrusion.
  • the inventive method relates to the production of a housing ring, ie an annular housing, for example in the form of a collar housing.
  • a housing ring 2 which can be produced by the method according to the invention is shown in FIG Fig. 2 shown.
  • Fig. 2 shows the final design, but not to scale.
  • the starting point for the process implementation is a blank 1.
  • This blank 1 is formed by separating a wire section from a wound into a federal government and in Fig. 1 not shown wire. The separation of the wound wire to create the blank 1 can be done for example by shearing.
  • the blank 1 is then plungestäucht in a step of setting, namely to form flat blank end faces 3 and 4.
  • the result of the process step of the planer dipping by setting is the intermediate product. 5
  • the intermediate product 5 is then subjected to a combined cup extrusion in a next process step, as a result cup-shaped recesses 6 and 7 are introduced into the end faces 3 and 4.
  • the result of this process step is the intermediate product 8.
  • a hollow backward pressing is then carried out. This produces the intermediate product 11.
  • the intermediate product 11 is then provided with a circumferential annular groove 12, which is done by upsetting. The result is formed with an annular groove 12 intermediate product 13th

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Wire Processing (AREA)
  • Rolling Contact Bearings (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The method involves separating blank (1) from a bundle of wire by scissors, planar dipping of the blank front faces (3,4) by setting. The method involves combining cup impact extrusion, punching, hollow backward pressing, forming a circumferential ring groove (12) by tossing and reducing rolling edges. The wire is a steel wire.

Description

Verfahren zur Herstellung eines Gehäuserings, das heißt eines ringförmigen Gehäuses beispielsweise in Form eines Bundgehäuses sind aus dem Stand der Technik an sich bekannt, ebenso wie ringförmige Gehäuse beispielsweise in Form von Bundgehäusen als solche. Eines gesonderten druckschriftlichen Nachweises bedarf es an dieser Stelle deshalb nicht.A method for producing a housing ring, that is an annular housing, for example in the form of a collar housing are known per se from the prior art, as well as annular housing, for example in the form of collar housings as such. A separate documentary proof is therefore not required at this point.

Bei aus dem Stand der Technik vorbekannten Verfahren zur Herstellung von ringförmigen Gehäusen finden zumindest zum Teil mechanische Bearbeitungen, wie zum Beispiel drehen, fräsen, bohren oder dergleichen statt. Dies gilt es insbesondere aus handhabungs- und fertigungstechnischen Gründen zu vermeiden, weshalb der Erfindung die Aufgabe zugrundeliegt, ein neuartiges Verfahren zur Herstellung eines Gehäuserings anzugeben.In previously known from the prior art method for the production of annular housings find at least partially mechanical operations, such as turning, milling, drilling or the like instead. This is to be avoided, in particular for handling and manufacturing reasons, which is why the invention is based on the object of specifying a novel method for producing a housing ring.

Zur Lösung dieser Aufgabe wird mit der Erfindung vorgeschlagen ein Verfahren zur Herstellung eines Gehäuserings aus einem zu einem Bund aufgewickelten Draht durch ausschließliches Kaltumformen mit den folgenden Schritten:

  • Abtrennen eines Rohlings vom Drahtbund durch Scheren,
  • Planstauchen der Rohlingstirnflächen,
  • kombiniertes Napf-Fließpressen,
  • Lochen,
  • Hohlrückwärtspressen,
  • Ausbilden einer umlaufenden Ringnut durch Stauchen und
  • Anreduzieren der Walzkanten.
To achieve this object, the invention proposes a method for producing a housing ring from a wire wound into a bundle by exclusively cold forming with the following steps:
  • Separating a blank from the wire bundle by shearing,
  • Planing of the blank end faces,
  • combined cup extrusion,
  • punching,
  • Hollow backward pressing,
  • Forming a circumferential annular groove by upsetting and
  • Anreduzieren the rolling edges.

Die voraufgeführten Verfahrensschritte werden hintereinander vorzugsweise auf einer mehrstufigen Quertransportpresse durchgeführt, so dass der Gehäusering nach dem erfindungsgemäßen Verfahren in nur einem Arbeitsvorgang fertiggestellt werden kann, und zwar ohne dass mechanische Arbeiten, insbesondere mechanische Nacharbeiten erforderlich wären. Das erfindungsgemäße Verfahren erweist sich damit insgesamt als einfach in der Handhabung und kostengünstig in der Durchführung.The method steps listed above are preferably carried out in succession on a multi-stage transverse transport press, so that the housing ring can be completed in only one operation by the method according to the invention, without mechanical work, in particular mechanical reworking being required. Overall, the method according to the invention proves to be easy to handle and economical to carry out.

Ein weiterer Vorteil des erfindungsgemäßen Verfahrens liegt darin, dass als Ausgangsmaterial ein Halbzeug in Form eines Drahtbundes, eines sogenannten Drahtcoils verwendet werden kann. Die Beschaffung, Lagerhaltung und Verarbeitung kann so in vorteilhafter Weise standardisiert und damit vereinfacht werden.A further advantage of the method according to the invention is that a semifinished product in the form of a wire bundle, a so-called wire coil, can be used as the starting material. The procurement, warehousing and processing can be standardized in an advantageous manner and thus simplified.

Die Herstellung eines Gehäuserings, das heißt eines ringförmigen Gehäuses beispielsweise in Form eines Bundgehäuses erfolgt nach dem erfindungsgemäßen Verfahren ausschließlich durch Kaltumformen. Eine mechanische Bearbeitung, insbesondere eine mechanische Nachbearbeitung findet nicht statt. Die endfertige Gehäuseringherstellung erfolgt vielmehr in nur einem Bearbeitungsvorgang mit den folgenden Verfahrensschritten, die bevorzugter Weise nacheinander auf einer mehrstufigen Quertransportpresse durchgeführt werden.The production of a housing ring, that is an annular housing, for example in the form of a collar housing is carried out by the novel process exclusively by cold forming. A mechanical processing, in particular a mechanical post-processing does not take place. Rather, the finished housing ring production takes place in only one machining operation with the following method steps, which are preferably carried out successively on a multi-stage transverse transport press.

In einem ersten Schritt wird zunächst vom Drahtbund ein Rohling abgetrennt, und zwar durch scheren. Ein Abtrennen kann anstelle durch Scheren beispielsweise auch durch Abschnitt erfolgen. Es kommt bevorzugter Weise ein Draht mit einem Durchmesser von 19 mm zum Einsatz, so dass der Rohling in Querschnitt kreisförmig ausgebildet ist und einen Durchmesser von 19 mm aufweist. Die Höhenerstreckung des Rohlings ergibt sich in Abhängigkeit der verwendungsgerecht einstellbaren Abtrennlänge. Diese kann je nach wünschenswerter Weise herzustellendem Gehäusering bedarfsgerecht eingestellt werden. Es versteht sich im Übrigen von selbst, dass auch andere Drahtdurchmesser als 19 mm verwendet werden können.In a first step, a blank is first separated from the wire bundle, by shearing. A separation can be done instead of by shearing, for example, by section. It is preferable to use a wire with a diameter of 19 mm, so that the blank is circular in cross-section and has a diameter of 19 mm. The vertical extent of the blank results in dependence of the use-adjustable separation length. This can be adjusted according to the desired manner to be produced housing ring needs. It goes without saying that other wire diameters than 19 mm can be used.

Nach Abtrennen des Rohlings vom Drahtbund erfolgt ein Planstauchen der Rohlingstirnfläche. Dies geschieht bevorzugter Weise mittels Setzen.After the blank has been separated from the wire bundle, the blank end face is planed. This is preferably done by setting.

In einem nachfolgenden Verfahrensschritt werden in die Rohlingstirnflächen jeweils napfförmige Ausnehmungen eingebracht, was durch ein kombiniertes Napf-Fließpressen erfolgt.In a subsequent method step, cup-shaped recesses are respectively introduced into the blank end faces, which takes place by combined cup extruding.

In einem weiteren Verfahrensschritt erfolgt die Ausbildung einer durchgehenden Ausnehmung durch Lochen. Das Ergebnis dieses Verfahrensschrittes ist ein ringförmiges Zwischenprodukt.In a further method step, the formation of a continuous recess by punching takes place. The result of this process step is an annular intermediate.

Es folgt sodann ein Hohlvorwärtspressen, gefolgt von einem Anreduzieren der Walzenkanten.It then follows a hollow forward pressing, followed by an Anreduzieren the roll edges.

Zwischen den beiden zuletzt genannten Verfahrensschritten kann ein Verfahrensschritt zur Ausbildung einer umlaufenden Ringnut durch Stauchen vorgesehen sein. Es können dabei selbstredend mehrere Ringnuten durch mehrere aufeinander nachfolgende Stauchvorgänge ausgebildet werden. Das erfindungsgemäße Verfahren ist insoweit nicht beschränkend zu verstehen, da je nach Gehäuseringtyp eine Ausbildung einer Ringnut, mehrerer Ringnuten oder gar keiner Ringnut vorgesehen sein kann. Es ist vielmehr von erfindungswesentlicher Bedeutung, dass die endfertige Gehäuseringherstellung allein durch Kaltumformen erfolgt, das heißt eine endfertige Erstellung ohne mechanische Nachbearbeitung durchgeführt wird.Between the two last-mentioned method steps, a method step for forming a circumferential annular groove can be provided by upsetting. Of course, a plurality of annular grooves can be formed by a plurality of successive upsetting operations. The method according to the invention is not to be understood as limiting insofar as depending on the type of housing ring it is possible to provide for the formation of an annular groove, a plurality of annular grooves or even no annular groove. Rather, it is of essential importance to the invention that the finished housing ring production takes place solely by cold forming, that is to say a final production is carried out without mechanical reworking.

Bevorzugter Weise wird als Draht ein Stahldraht aus C15-Stahl verwendet. Es können selbstredend aber auch andere Stahlsorten zum Einsatz kommen, je nachdem welche Materialeigenschaften der spätere Gehäusering aufweisen soll. Um die Materialeigenschaften wunschgemäß zu beeinflussen, kann zudem vorgesehen sein, eine Wärmebehandlung durchzuführen. Diese erfolgt bevorzugter Weise nach dem Verfahrensschritt des Planstauchens, das heißt vor dem Verfahrensschritt des kombinierten Napf-Fließpressens.Preferably, a steel wire made of C15 steel is used as the wire. Of course, other types of steel may be used, depending on which material properties the later housing ring should have. In order to influence the material properties as desired, may also be provided to perform a heat treatment. This is preferably carried out after the step of planing, that is before the step of the combined cup extrusion.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung anhand der Figuren. Dabei zeigen:

Fig. 1
in einem schematischen Ablaufdiagramm das erfindungsgemäße Verfahren und
Fig. 2
in einer geschnittenen Seitenansicht einen nach dem erfindungsgemäßen Verfahren hergestellten Gehäusering.
Further features and advantages of the invention will become apparent from the following description with reference to FIGS. Showing:
Fig. 1
in a schematic flow diagram, the inventive method and
Fig. 2
in a sectional side view of a housing ring produced by the process according to the invention.

Das erfindungsgemäße Verfahren betrifft die Herstellung eines Gehäuserings, d. h. eines ringförmigen Gehäuses, beispielsweise in Form eines Bundgehäuses. Ein solcher nach dem erfindungsgemäßen Verfahren herstellbarer Gehäusering 2 ist in Fig. 2 dargestellt. Fig. 2 zeigt die endfertige Ausgestaltung, allerdings nicht maßstabsgerecht.The inventive method relates to the production of a housing ring, ie an annular housing, for example in the form of a collar housing. Such a housing ring 2 which can be produced by the method according to the invention is shown in FIG Fig. 2 shown. Fig. 2 shows the final design, but not to scale.

Zur Erzeugung der endfertigen Gehäusekontur gemäß des in Fig. 2 gezeigten Gehäuserings 2 erfolgt eine Verfahrensdurchführung, wie sie in Fig. 1 schematisch dargestellt ist.To produce the final housing contour according to the in Fig. 2 shown Gehäuserings 2 is a process implementation, as shown in Fig. 1 is shown schematically.

Ausgangspunkt für die Verfahrensdurchführung ist ein Rohling 1. Dieser Rohling 1 entsteht durch Abtrennen eines Drahtabschnittes von einem zu einem Bund aufgewickelten und in Fig. 1 nicht näher dargestellten Draht. Das Abtrennen vom aufgewickelten Draht zur Erstellung des Rohlings 1 kann beispielsweise durch Scheren erfolgen.The starting point for the process implementation is a blank 1. This blank 1 is formed by separating a wire section from a wound into a federal government and in Fig. 1 not shown wire. The separation of the wound wire to create the blank 1 can be done for example by shearing.

Der Rohling 1 wird sodann in einem Verfahrensschritt des Setzens plangestaucht, und zwar zur Ausbildung planer Rohlingstirnflächen 3 und 4. Das Ergebnis des Verfahrensschritts des Planstauchens durch Setzen ist das Zwischenprodukt 5.The blank 1 is then plungestäucht in a step of setting, namely to form flat blank end faces 3 and 4. The result of the process step of the planer dipping by setting is the intermediate product. 5

Das Zwischenprodukt 5 wird sodann in einem nächsten Verfahrensschritt einem kombinierten Napf-Fließpressen ausgesetzt, infolgedessen napfförmige Ausnehmungen 6 und 7 in die Stirnflächen 3 und 4 eingebracht werden. Das Ergebnis dieses Verfahrensschrittes ist das Zwischenprodukt 8.The intermediate product 5 is then subjected to a combined cup extrusion in a next process step, as a result cup-shaped recesses 6 and 7 are introduced into the end faces 3 and 4. The result of this process step is the intermediate product 8.

In einem nächsten Verfahrensschritt erfolgt die Ausbildung einer durchgehenden Ausnehmung 9 durch Lochen, was im Ergebnis zum Zwischenprodukt 10 führt.In a next method step, the formation of a continuous recess 9 by punching, resulting in the result to the intermediate product 10.

In einem weiteren Verfahrensschritt erfolgt dann ein Hohlrückwärtspressen. Es entsteht das Zwischenprodukt 11. Das Zwischenprodukt 11 wird sodann mit einer umlaufenden Ringnut 12 versehen, was durch Stauchen erfolgt. Es entsteht das mit einer Ringnut 12 ausgebildete Zwischenprodukt 13.In a further method step, a hollow backward pressing is then carried out. This produces the intermediate product 11. The intermediate product 11 is then provided with a circumferential annular groove 12, which is done by upsetting. The result is formed with an annular groove 12 intermediate product 13th

In einem letzten Verfahrensschritt werden die Walzkanten durch Anreduzieren umgeformt. Im Ergebnis dieses letzten Verfahrensschrittes entsteht das endfertige Produkt, das heißt der Gehäusering 2, wie er in Fig. 2 dargestellt ist.In a final process step, the rolling edges are formed by Anreduzieren. As a result of this last process step, the finished product, that is, the housing ring 2, as in Fig. 2 is shown.

Die Besonderheit des vorerläuterten Verfahrens besteht darin, dass dies die Herstellung eines Gehäuserings 2 ausschließlich durch Kaltumformen ermöglicht. Eine mechanische, beispielsweise spanende Bearbeitung insbesondere Nachbearbeitung ist nicht erforderlich. Am Ende der Verfahrensdurchführung steht ein endfertig hergestellter Gehäusering.The peculiarity of the above-explained method is that this allows the production of a housing ring 2 exclusively by cold forming. A mechanical, for example, machining, in particular post-processing is not required. At the end of the procedure is a finished finished housing ring.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Rohlingblank
22
Gehäuseringhousing ring
33
Stirnflächeface
44
Stirnflächeface
55
Zwischenproduktintermediate
66
napfförmige Ausnehmungcup-shaped recess
77
napfförmige Ausnehmungcup-shaped recess
88th
Zwischenproduktintermediate
99
durchgehende Ausnehmungthrough recess
1010
Zwischenproduktintermediate
1111
Zwischenproduktintermediate
1212
Nutgroove
1313
Zwischenproduktintermediate

Claims (4)

Verfahren zur Herstellung eines Gehäuseringes (2) aus einem zu einem Bund aufgewickelten Draht durch ausschließliches Kaltumformen mit den folgenden Schritten: - Abtrennen eine Rohlings (1) vom Drahtbund durch Scheren, - Planstauchen der Rohlingstirnflächen (3, 4) durch Setzen, - kombiniertes Napf-Fließpressen, - Lochen, - Hohlrückwärtspressen, - Ausbilden einer umlaufenden Ringnut (12) durch Stauchen und - Anreduzieren der Walzkanten. Method for producing a housing ring (2) from a wire wound into a bundle by cold forming exclusively with the following steps: Severing a blank (1) from the wire bundle by shearing, - planching of the blank end faces (3, 4) by setting, combined cup extrusion, - punching, - hollow backward presses, - Forming a circumferential annular groove (12) by upsetting and - Anreduzieren the rolling edges. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Verfahrensschritte des Kaltumformens mittels einer mehrstufigen Quertransportpresse durchgeführt werden.A method according to claim 1, characterized in that the method steps of the cold forming are carried out by means of a multi-stage transverse transport press. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Draht ein Stahldraht aus C15-Stahl verwendet wird.Method according to one of the preceding claims, characterized in that a steel wire made of C15 steel is used as the wire. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass als Draht ein Draht mit einem Durchmesser von 19 mm verwendet wird.Method according to one of the preceding claims, characterized in that a wire with a diameter of 19 mm is used as the wire.
EP08014252A 2008-08-09 2008-08-09 Method for manufacturing a housing ring Active EP2151289B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502008000496T DE502008000496D1 (en) 2008-08-09 2008-08-09 Method for producing a housing ring
AT08014252T ATE462510T1 (en) 2008-08-09 2008-08-09 METHOD FOR PRODUCING A HOUSING RING
ES08014252T ES2341915T3 (en) 2008-08-09 2008-08-09 PROCEDURE FOR THE MANUFACTURE OF AN ANNULAR BODY.
EP08014252A EP2151289B1 (en) 2008-08-09 2008-08-09 Method for manufacturing a housing ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08014252A EP2151289B1 (en) 2008-08-09 2008-08-09 Method for manufacturing a housing ring

Publications (2)

Publication Number Publication Date
EP2151289A1 true EP2151289A1 (en) 2010-02-10
EP2151289B1 EP2151289B1 (en) 2010-03-31

Family

ID=40251778

Family Applications (1)

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EP08014252A Active EP2151289B1 (en) 2008-08-09 2008-08-09 Method for manufacturing a housing ring

Country Status (4)

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EP (1) EP2151289B1 (en)
AT (1) ATE462510T1 (en)
DE (1) DE502008000496D1 (en)
ES (1) ES2341915T3 (en)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN102896271A (en) * 2011-07-26 2013-01-30 锻压制造克雷费尔德有限两合公司 Method for producing collar
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
EP3127630A1 (en) * 2015-08-04 2017-02-08 Felix L. Sorkin Cold heading formed wedge for use in post tensioning concrete
US9759532B2 (en) 2010-09-17 2017-09-12 Schott Ag Ring-shaped or plate-like element and method for producing same

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Publication number Priority date Publication date Assignee Title
DE102010045624C5 (en) * 2010-09-17 2018-10-04 Schott Ag Ring or plate-shaped element

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Publication number Priority date Publication date Assignee Title
JPH0489153A (en) * 1990-07-30 1992-03-23 Daido Steel Co Ltd Cold and warm forging method for cylindrical body
JPH0679394A (en) * 1991-06-05 1994-03-22 Maruzen Byora:Kk Manufacture of sleeve with expanding slot
WO2004043626A1 (en) * 2002-11-12 2004-05-27 Amafa Service Srl. Methods for the cold extrusion of metallic elements with dead or through holes and plant for carrying out said methods
JP2006136976A (en) * 2004-11-12 2006-06-01 Ntn Corp Method for manufacturing roller of rocker arm
DE102008004414A1 (en) * 2007-01-23 2008-07-24 Tsukiboshi Mfg. Co., Kaga Punching tool for chain bush production, has pin holder compressed by pressing force, when holder is pressed and inserted into housing, and punching pin fastened by compression, and fixedly attached at holder by fastening force

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0489153A (en) * 1990-07-30 1992-03-23 Daido Steel Co Ltd Cold and warm forging method for cylindrical body
JPH0679394A (en) * 1991-06-05 1994-03-22 Maruzen Byora:Kk Manufacture of sleeve with expanding slot
WO2004043626A1 (en) * 2002-11-12 2004-05-27 Amafa Service Srl. Methods for the cold extrusion of metallic elements with dead or through holes and plant for carrying out said methods
JP2006136976A (en) * 2004-11-12 2006-06-01 Ntn Corp Method for manufacturing roller of rocker arm
DE102008004414A1 (en) * 2007-01-23 2008-07-24 Tsukiboshi Mfg. Co., Kaga Punching tool for chain bush production, has pin holder compressed by pressing force, when holder is pressed and inserted into housing, and punching pin fastened by compression, and fixedly attached at holder by fastening force

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
US9759532B2 (en) 2010-09-17 2017-09-12 Schott Ag Ring-shaped or plate-like element and method for producing same
US9885548B2 (en) 2010-09-17 2018-02-06 Schott Ag Ring-shaped or plate-like element and method for producing same
US20180156582A1 (en) * 2010-09-17 2018-06-07 Schott Ag Ring-shaped or plate-like element and method for producing same
US11150060B2 (en) 2010-09-17 2021-10-19 Schott Ag Ring-shaped or plate-like element and method for producing same
CN102896271A (en) * 2011-07-26 2013-01-30 锻压制造克雷费尔德有限两合公司 Method for producing collar
EP3127630A1 (en) * 2015-08-04 2017-02-08 Felix L. Sorkin Cold heading formed wedge for use in post tensioning concrete

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EP2151289B1 (en) 2010-03-31

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