DE19618065A1 - Process for the production of moldings - Google Patents
Process for the production of moldingsInfo
- Publication number
- DE19618065A1 DE19618065A1 DE19618065A DE19618065A DE19618065A1 DE 19618065 A1 DE19618065 A1 DE 19618065A1 DE 19618065 A DE19618065 A DE 19618065A DE 19618065 A DE19618065 A DE 19618065A DE 19618065 A1 DE19618065 A1 DE 19618065A1
- Authority
- DE
- Germany
- Prior art keywords
- thermal
- metal strip
- pockets
- subjected
- chemical treatment
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 230000008569 process Effects 0.000 title abstract description 7
- 238000000465 moulding Methods 0.000 title description 2
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 238000011282 treatment Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims abstract description 6
- 229910000640 Fe alloy Inorganic materials 0.000 claims abstract description 3
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 2
- 238000000137 annealing Methods 0.000 claims 1
- 230000004075 alteration Effects 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 125000000449 nitro group Chemical class [O-][N+](*)=O 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
- F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
- F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
- F16C33/545—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part rolled from a band
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Herstellen von Formkörpern aus Eisenlegierungen, insbesondere Käfige für Radial- oder Linearlager, wobei in einem Metallband durch Ausstanzungen Wälzkörper aufnehmende Taschen gebildet werden und die Formkörper zur Erzielung gewünschter Eigenschaften wie Härte, Festigkeit und Verschleißverhalten einer thermischen oder thermisch chemischen Behandlung unterworfen sind.The invention relates to a method for producing molded articles from Iron alloys, especially cages for radial or linear bearings, wherein in a metal band through punched pockets that hold rolling elements are formed and the moldings to achieve desired properties such as hardness, strength and wear behavior of a thermal or thermal are subjected to chemical treatment.
Wälzlagerkäfige aus Stahl werden in der Großserienfertigung durch unterschied liche Verfahren hergestellt. Sie können beispielsweise aus Stahlblech durch Ziehen, Stanzen und Biegen oder auch aus Stahlrohren hergestellt werden. Käfige für besonders hohe Beanspruchungen können zusätzlich durch thermi sche oder thermisch-chemische Behandlungsverfahren, wie z. B. Einsatzhärten oder Nitrieren in ihren Festigkeits- und Verschleißeigenschaften verbessert werden (DE-OS 25 56 745).Rolling cages made of steel are differentiated in large series production process. For example, you can go through sheet steel Pulling, punching and bending or even made of steel pipes. Cages for particularly high loads can also be thermi cal or thermal-chemical treatment processes, such as. B. Case hardening or nitriding improved in their strength and wear properties be (DE-OS 25 56 745).
Es ist auch bekannt, Käfige aus Bandmaterial zu fertigen, indem man aus dem Band Wälzkörper aufnehmende Taschen ausstanzt, das Band rundbiegt und gegebenenfalls an seinen aneinanderstoßenden Enden zusammenschweißt (FR 12 56 601, US 22 88 564).It is also known to manufacture cages from tape material by using the Punch out pockets that hold rolling elements, bend the strip and if necessary welded together at its abutting ends (FR 12 56 601, US 22 88 564).
Durch die zur Verbesserung der Eigenschaften angewandte Behandlung tritt insbesondere bei Filigrankäfigen, d. h. Käfigen mit geringen Wand- und Steg stärken das Problem auf, daß die als Verzug bezeichnete Form- und Maßände rungen besonders durchschlagen, d. h. im Extremfall ein derartiges Teil un brauchbar machen. So werden beim Härten diese Maß- und Formänderungen der Werkstücke durch Überlagerung der aufgrund thermisch bedingter Eigen spannungen hervorgerufenen Deformation und der umwandlungsbedingten Volumenänderung hervorgerufen.Through the treatment applied to improve the properties occurs especially with filigree cages, d. H. Cages with a small wall and web reinforce the problem that the form and dimensions referred to as delay strikes particularly d. H. in extreme cases such a part un make usable. This is how these dimensional and shape changes become during hardening of the workpieces by superimposing the due to thermally induced Eigen deformations caused by stresses and the transformation-related Volume change caused.
Der Erfindung liegt daher die Aufgabe zugrunde, Formkörper trotz einer Anwen dung von Behandlungsverfahren zu deren Eigenschaftsverbesserung so zu fertigen, daß deren Verzug verhindert wird.The invention is therefore based on the object, molded body despite an application of treatment processes to improve their properties manufacture that their delay is prevented.
Erfindungsgemäß wird diese Aufgabe nach dem kennzeichnenden Teil von Anspruch 1 dadurch gelöst, daß die thermische oder thermisch-chemische Behandlung des Metallbandes vor dem Ausstanzen der Taschen erfolgt.According to the invention, this task is performed according to the characterizing part of Claim 1 solved in that the thermal or thermal-chemical Treatment of the metal band is done before punching out the pockets.
Auf diese Weise werden durch ein Vorziehen der thermischen bzw. thermisch- chemischen Behandlungsverfahren und deren Anwendung auf das Ausgangs material die unvermeidbaren Form- und Maßänderungen der Teile eliminiert, da die durch Eigenspannung hervorgerufenen Deformationen und die umwand lungsbedingten Volumenänderung vor der Fertigstellung der endgültigen Form der Teile abgelaufen sind.In this way, by pulling the thermal or thermal chemical treatment processes and their application to the output material eliminates the inevitable changes in shape and size of the parts, because the deformations caused by internal stress and the wall change in volume before completion of the final shape the parts have expired.
Unter thermischen Verfahren sind dabei in bekannter Weise Wärmebehand lungsverfahren zu verstehen, mit denen bestimmte Verarbeitungs- und/oder Gebraucheigenschaften durch thermische Einwirkung ohne beabsichtigte Ände rung der chemischen Zusammensetzung verbessert oder erreicht werden sollen. Unter thermisch-chemischen Verfahren sind Wärmebehandlungsverfahren mit dem Ziel zu verstehen, durch thermische und chemische Einwirkungen die chemische Zusammensetzung und das Gefüge vorzugsweise in der Randschicht zu verändern, um ebenfalls bestimmte Gebrauchseigenschaften zu erreichen.Thermal processes include heat treatment in a known manner to understand processing methods with which certain processing and / or Usage properties due to thermal action without intended changes tion of the chemical composition should be improved or achieved. Thermal treatment processes include thermal treatment processes to understand the goal through thermal and chemical effects chemical composition and structure preferably in the surface layer to change in order to also achieve certain usage properties.
Aus den Ansprüchen 2 und 3 geht hervor, daß das Metallband rundgebogen und an seinen aneinanderstoßenden Enden verschweißt wird.From claims 2 and 3 it appears that the metal strip is bent round and is welded at its abutting ends.
Die werkstofftechnische Besonderheit ist hierbei, daß die Schweißnaht aufgrund der vorbestimmten Härtbarkeit keine Martensitbildung aufweist und demzufolge kein martensitischer Schweißaufwurf entsteht, der möglicherweise abrasiv auf Wälzlagerbauteile, wie Laufbahnen, wirken könnte.The material-technical peculiarity is that the weld seam is due to the predetermined hardenability has no martensite formation, and consequently there is no martensitic sweat which may be abrasive Rolling bearing components, such as raceways, could act.
Da aufgrund der kurzzeitigen Schweißerwärmung, im Bereich unterhalb der AC₁-Temperatur, das vergütete Bandgefüge keinen wesentlichen Anlaßeffekt erfährt, ist vorteilhafterweise keine Erweichung im Schweißnahtübergangs bereich vorhanden, die niedriger als die Grundfestigkeit ist. Die auftretenden Schweißeigenspannungen werden aufgrund der hinreichenden Werkstoffzähig keit weitestgehend abgebaut.Because of the short-term welding warming, in the area below the AC₁ temperature, the tempered band structure no significant starting effect experienced, there is advantageously no softening in the weld transition range that is lower than the basic strength. The occurring Welding residual stresses become tough due to the sufficient material largely reduced.
In weiterer Ausgestaltung der Erfindung soll das Band nach Anspruch 4 einsatz gehärtet oder nitrokarburiert sein. Bei der Einsatzhärtung werden in bekannter Weise Stähle mit einem geringen Kohlenstoffgehalt von 0,05 bis 0,20%, die also praktisch nicht härtbar sind, in kohlenstoffabgebenden festen, flüssigen oder gasförmigen Mitteln bei Temperaturen zwischen 850 bis 1.000°C geglüht. Der Kohlenstoff diffundiert dabei in die Randschichten des eingesetzten Werk stücks ein, so daß man eine Art Verbundwerkstoff erhält, der aus einem Kern mit niedrigem und aus einem Rand mit hohem Kohlenstoffgehalt besteht.In a further embodiment of the invention, the tape is to be used according to claim 4 be hardened or nitro-carburized. In case hardening are known in Wise steels with a low carbon content of 0.05 to 0.20%, the are practically not curable, in carbon-donating solid, liquid or gaseous agents at temperatures between 850 and 1,000 ° C. The carbon diffuses into the outer layers of the plant used pieces, so that you get a kind of composite material consisting of a core with a low and a high carbon rim.
Das Nitrokarburieren ist wie das Einsatzhärten ein thermisch-chemisches Ver fahren. Dabei wird die Oberfläche mit Stickstoff und Kohlenstoff angereichert. Nitro carburizing, like case hardening, is a thermal-chemical process drive. The surface is enriched with nitrogen and carbon.
Ziel dieser thermisch-chemischen Behandlungen ist immer die Einstellung der eingangs genannten Eigenschaften, wie Härte, Dauer- und Verschleißfestigkeit.The aim of these thermal-chemical treatments is always to set the properties mentioned at the beginning, such as hardness, durability and wear resistance.
In vorteilhafter Weise ist nach Anspruch 5 eine Anlaßbehandlung vorgesehen, wobei diese gemäß Anspruch 6 bei etwa 180°C mit einer Haltezeit von etwa 1 Stunde oder bei etwa 350°C mit einer Haltezeit von etwa 5 Sekunden erfolgen soll.Advantageously, a tempering treatment is provided according to claim 5, wherein according to claim 6 at about 180 ° C with a holding time of about 1 hour or at about 350 ° C with a hold time of about 5 seconds should be done.
Durch dieses Anlassen wird eine Stabilisierung des verformten Gefüges erreicht und somit die Dauerfestigkeit erhöht sowie Schweißeigenspannungen abgebaut, aber keine Maß- und Formänderung bewirkt.This tempering stabilizes the deformed structure and thus increases the fatigue strength and reduces residual welding stress, but no change in size or shape.
Die Erfindung wird an nachstehendem Ausführungsbeispiel näher erläutert.The invention is explained in more detail using the following exemplary embodiment.
Es zeigen:Show it:
Fig. 1 ein flaches Blechband im Ausgangszustand; Figure 1 is a flat sheet metal strip in the initial state.
Fig. 2 dieses Blechband nach dem Ausstanzen der Taschen und Fig. 2 this sheet metal band after punching out the pockets and
Fig. 3 ein aus dem ausgestanzten Blechband zusammengerollter und geschweißter Käfig. Fig. 3 is a rolled and welded cage from the punched sheet metal strip.
Das in Fig. 1 dargestellte flache und geradlinige Blechband 1 aus C22, d. h. einem Kohlenstoffstahl mit 0,22% C wird bei 800 bis 900°C in einem Durch laufofen vergütet, wie das typischerweise mit Federbändern nach DIN 17 222 geschieht. Die durch das Vergüten erreichte Festigkeit soll 250 bis 350 HV bzw. 850 bis 1.100 N/mm² Zugfestigkeit betragen. In ein derart vergütetes Band 1 werden nun gemäß Fig. 2 Wälzkörper aufnehmende Taschen 2 ausgestanzt, bevor, wie aus Fig. 3 ersichtlich, das perforierte Band 1 zu einem Radialkäfig 3 rundgebogen wird, dessen beide aneinanderstoßende Enden 4, 5 durch einen Schweißvorgang miteinander verbunden werden.The illustrated in Fig. 1 flat and straight sheet-metal strip 1 of C22, ie, a carbon steel with 0.22% C is annealed at 800 to 900 ° C in a continuous furnace as typically occurs with spring strips according to DIN 17222. The strength achieved by tempering should be 250 to 350 HV or 850 to 1,100 N / mm² tensile strength. In such an annealed band 1 2 rolling body receiving pockets 2 are now shown in Fig. Punched before, as shown in FIG. 3, the perforated tape is bent round 1 at a radial cage 3, the two abutting ends 4, 5 are connected together by a welding process will.
Auf diese Weise ist der offensichtliche Vorteil ausgezeichneter Gebrauchseigen schaften durch Härten bzw. Vergüten nicht mehr mit dem Nachteil des Verzugs und der Formänderung verknüpft, da die unvermeidbaren Form- und Maß änderungen auf das flache und ungestanzte Ausgangsband vorverlegt wurden.In this way, the obvious advantage of excellent personal use is no longer suffer from hardening or tempering with the disadvantage of delay and the change in shape linked because the inevitable shape and dimension changes have been brought forward to the flat and unpunched output belt.
Das Ausführungsbeispiel kann auch auf ebene oder lineare Lageranordnungen angewendet werden, wo eine hin- und hergehende lineare Bewegung in einer Ebene auftritt, z. B. in Maschinenführungen. In diesem Fall bleibt natürlich der Metallstreifen eben und wird nicht zu einem ringförmigen Käfig aufgerollt und an seinen beiden Enden zusammengeschweißt.The embodiment can also on flat or linear bearing arrangements applied where a reciprocating linear motion in one Level occurs, e.g. B. in machine guides. In this case, of course Flat metal strip and is not rolled up into an annular cage and welded together at both ends.
BezugszeichenlisteReference list
1 Blechband
2 Tasche
3 Radialkäfig
4 Ende
5 Ende 1 sheet metal band
2 pockets
3 radial cage
4 end
5 end
Claims (6)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19618065A DE19618065A1 (en) | 1996-05-06 | 1996-05-06 | Process for the production of moldings |
| PCT/EP1997/000323 WO1997041996A1 (en) | 1996-05-06 | 1997-01-24 | Process for producing moulded bodies |
| KR1019980708890A KR20000010768A (en) | 1996-05-06 | 1997-01-24 | Metal mold manufacturing method |
| DE19780400T DE19780400D2 (en) | 1996-05-06 | 1997-01-24 | Process for the production of moldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19618065A DE19618065A1 (en) | 1996-05-06 | 1996-05-06 | Process for the production of moldings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19618065A1 true DE19618065A1 (en) | 1997-11-13 |
Family
ID=7793423
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19618065A Withdrawn DE19618065A1 (en) | 1996-05-06 | 1996-05-06 | Process for the production of moldings |
| DE19780400T Expired - Lifetime DE19780400D2 (en) | 1996-05-06 | 1997-01-24 | Process for the production of moldings |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19780400T Expired - Lifetime DE19780400D2 (en) | 1996-05-06 | 1997-01-24 | Process for the production of moldings |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20000010768A (en) |
| DE (2) | DE19618065A1 (en) |
| WO (1) | WO1997041996A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10011651A1 (en) * | 2000-03-10 | 2001-09-13 | Schaeffler Waelzlager Ohg | Ball bearing cage made from curved length of strip material with interlocking ends |
| WO2001081643A1 (en) * | 2000-04-22 | 2001-11-01 | Ina-Schaeffler Kg | Rolling bearing component |
| EP1418354A3 (en) * | 2002-11-07 | 2004-08-25 | NTN Corporation | Thrust roller bearing and cage |
| DE102006024720A1 (en) * | 2006-05-26 | 2007-12-06 | Ab Skf | Antifriction bearing cage is made of steel, and has surface hardness larger than adjacent areas in area of retainer openings of antifriction body of antifriction bearing |
| DE102007019917A1 (en) * | 2007-04-27 | 2008-10-30 | Ab Skf | Roller bearing with running tracks which widen out in taper from one end to other generally useful in mechanical bearing technology shows minimal wear on inclined surfaces on which rear faces of roller bearing run |
| CN104723038A (en) * | 2015-03-23 | 2015-06-24 | 中航工业哈尔滨轴承有限公司 | Method for machining circular hole alloy steel cage with inner-and-outer double fore shafts |
| DE102015204773A1 (en) * | 2015-03-17 | 2016-09-22 | Aktiebolaget Skf | Layer formation for rolling bearing cages |
| DE102020103407A1 (en) | 2020-02-11 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Thrust washer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011004687A1 (en) * | 2011-02-24 | 2012-08-30 | Schaeffler Technologies Gmbh & Co. Kg | Rolling Element |
| DE102014212752A1 (en) * | 2014-07-02 | 2016-01-07 | Schaeffler Technologies AG & Co. KG | Method for producing a roller bearing cage from a metal sheet |
| CN108032036A (en) * | 2017-11-27 | 2018-05-15 | 重庆市大足区捷瑞机械设备制造有限公司 | A kind of clutch steel disc processing method |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1712076A (en) * | 1927-02-19 | 1929-05-07 | New Departure Mfg Co | Separator and method therefor |
| US2288564A (en) * | 1940-06-25 | 1942-06-30 | Orange Roller Bearing Co Inc | Method of making cages for roller bearings |
| DE810866C (en) * | 1948-10-02 | 1951-08-13 | Metallgesellschaft Ag | Process for the production of stamped and deep drawn parts from sheet metal or strip |
| FR1256601A (en) * | 1960-02-09 | 1961-03-24 | Roulements A Aiguilles Sa | Needle bearing cage and its manufacturing process |
| US3365775A (en) * | 1967-04-21 | 1968-01-30 | Torrington Mfg Co | Method of making bearing separators and the like |
| DE7119285U (en) * | 1971-08-12 | Zahnradfabrik Friedrichshafen Ag | Cage for needle bearings to guide the needles | |
| DE2556745A1 (en) * | 1975-12-17 | 1977-06-30 | Kugelfischer G Schaefer & Co | Roller bearing cage with anti-corrosion coating - has nickel layer applied to steel surface by heating under gas or in vacuum |
| DE4438657A1 (en) * | 1993-10-29 | 1995-05-04 | Ntn Toyo Bearing Co Ltd | Cage for roller bearings and a method for its manufacture |
| DE19500576C2 (en) * | 1994-03-16 | 1996-07-11 | Schaeffler Waelzlager Kg | Process for the thermochemical treatment of thin-walled components |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173192A (en) * | 1962-12-05 | 1965-03-16 | Mcgill Mfg Company Inc | Method for fabricating roller bearing retainers |
-
1996
- 1996-05-06 DE DE19618065A patent/DE19618065A1/en not_active Withdrawn
-
1997
- 1997-01-24 DE DE19780400T patent/DE19780400D2/en not_active Expired - Lifetime
- 1997-01-24 WO PCT/EP1997/000323 patent/WO1997041996A1/en not_active Application Discontinuation
- 1997-01-24 KR KR1019980708890A patent/KR20000010768A/en not_active Application Discontinuation
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7119285U (en) * | 1971-08-12 | Zahnradfabrik Friedrichshafen Ag | Cage for needle bearings to guide the needles | |
| US1712076A (en) * | 1927-02-19 | 1929-05-07 | New Departure Mfg Co | Separator and method therefor |
| US2288564A (en) * | 1940-06-25 | 1942-06-30 | Orange Roller Bearing Co Inc | Method of making cages for roller bearings |
| DE810866C (en) * | 1948-10-02 | 1951-08-13 | Metallgesellschaft Ag | Process for the production of stamped and deep drawn parts from sheet metal or strip |
| FR1256601A (en) * | 1960-02-09 | 1961-03-24 | Roulements A Aiguilles Sa | Needle bearing cage and its manufacturing process |
| US3365775A (en) * | 1967-04-21 | 1968-01-30 | Torrington Mfg Co | Method of making bearing separators and the like |
| DE2556745A1 (en) * | 1975-12-17 | 1977-06-30 | Kugelfischer G Schaefer & Co | Roller bearing cage with anti-corrosion coating - has nickel layer applied to steel surface by heating under gas or in vacuum |
| DE4438657A1 (en) * | 1993-10-29 | 1995-05-04 | Ntn Toyo Bearing Co Ltd | Cage for roller bearings and a method for its manufacture |
| DE19500576C2 (en) * | 1994-03-16 | 1996-07-11 | Schaeffler Waelzlager Kg | Process for the thermochemical treatment of thin-walled components |
Non-Patent Citations (1)
| Title |
|---|
| INA-Flachkäfige einreihig aus Stahl, Industriewerk Schaeffler, INA-Nadellager, Herzogenaurach, 9/71 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10011651B4 (en) * | 2000-03-10 | 2009-12-24 | Schaeffler Kg | Rotationally symmetrical molded part |
| DE10011651A1 (en) * | 2000-03-10 | 2001-09-13 | Schaeffler Waelzlager Ohg | Ball bearing cage made from curved length of strip material with interlocking ends |
| US6883968B2 (en) | 2000-03-10 | 2005-04-26 | Ina-Schaeffler Kg | Shaped part made from a strip |
| WO2001081643A1 (en) * | 2000-04-22 | 2001-11-01 | Ina-Schaeffler Kg | Rolling bearing component |
| US6682227B2 (en) | 2000-04-22 | 2004-01-27 | INA Wälzlager Schaeffler oHG | Rolling bearing component |
| EP1418354A3 (en) * | 2002-11-07 | 2004-08-25 | NTN Corporation | Thrust roller bearing and cage |
| US7114854B2 (en) | 2002-11-07 | 2006-10-03 | Ntn Corporation | Thrust roller bearing and cage |
| DE102006024720A1 (en) * | 2006-05-26 | 2007-12-06 | Ab Skf | Antifriction bearing cage is made of steel, and has surface hardness larger than adjacent areas in area of retainer openings of antifriction body of antifriction bearing |
| DE102006024720B4 (en) * | 2006-05-26 | 2010-04-01 | Ab Skf | Rolling bearings with a cage |
| DE102007019917A1 (en) * | 2007-04-27 | 2008-10-30 | Ab Skf | Roller bearing with running tracks which widen out in taper from one end to other generally useful in mechanical bearing technology shows minimal wear on inclined surfaces on which rear faces of roller bearing run |
| DE102007019917B4 (en) * | 2007-04-27 | 2009-04-09 | Ab Skf | Tapered roller bearings |
| DE102015204773A1 (en) * | 2015-03-17 | 2016-09-22 | Aktiebolaget Skf | Layer formation for rolling bearing cages |
| DE102015204773B4 (en) | 2015-03-17 | 2023-05-11 | Aktiebolaget Skf | Layer formation for roller bearing cages |
| CN104723038A (en) * | 2015-03-23 | 2015-06-24 | 中航工业哈尔滨轴承有限公司 | Method for machining circular hole alloy steel cage with inner-and-outer double fore shafts |
| DE102020103407A1 (en) | 2020-02-11 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Thrust washer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19780400D2 (en) | 1998-12-03 |
| WO1997041996A1 (en) | 1997-11-13 |
| KR20000010768A (en) | 2000-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1276915A1 (en) | Rolling bearing component | |
| DE3919199C2 (en) | ||
| DE19618065A1 (en) | Process for the production of moldings | |
| DE1292696B (en) | Process to increase the service life of roller pairs | |
| EP1263540B1 (en) | Method for the production of thin-walled steel components and components produced therefrom | |
| DE4137118A1 (en) | Cold strip for deep drawn and case hardened components - has core and roller clad bearing layer of different characteristics | |
| DE112012000408T5 (en) | Steel gear and manufacturing method therefor | |
| DE19711389A1 (en) | Method of assembling roller bearing | |
| DE102005060113A1 (en) | Production of wheel bearing ring useful for vehicle bearings involves austenization and quenching to a specific martensite level | |
| DE2157823A1 (en) | Process for treating articles made of steel to increase their resistance to wear and tear | |
| WO2008055477A2 (en) | Method for the production of a rolling bearing ring, and rolling bearing ring | |
| DE4327440A1 (en) | Process for the thermochemical-thermal treatment of hardened steels, heat-treatable steels and bearing steels | |
| DE102009016079A1 (en) | Ball stud made of a steel with a bainitic structure and method for producing such ball studs | |
| DE102006020075B4 (en) | Process for manufacturing a corrosion-resistant rolling bearing and corrosion-resistant rolling bearing | |
| DE4218099C2 (en) | ||
| DE4418245A1 (en) | Valve gear for an internal combustion engine | |
| DE3431788C2 (en) | ||
| WO2013170995A1 (en) | Rolling bearing part and method for the heat treatment of a rolling bearing part | |
| EP1778991B1 (en) | Anti-friction bearing comprising at least one precision deep-drawn component with a running or guide surface for rolling bodies and method for producing a component of this type | |
| DE4301754C2 (en) | Process for producing hot rolled steel strip with set strength | |
| DE102015204773B4 (en) | Layer formation for roller bearing cages | |
| DE102008026223A1 (en) | Method for producing a corrosion-resistant rolling bearing | |
| DE4303884A1 (en) | A process for producing machine components, in particular rolling bearing elements | |
| WO2018188686A1 (en) | Carbonitriding of rolling bearings produced by non-cutting processes | |
| DE102017122921A1 (en) | Method for producing a Planetenradbolzens with increased hardness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8127 | New person/name/address of the applicant |
Owner name: INA WAELZLAGER SCHAEFFLER OHG, 91074 HERZOGENAURAC |
|
| 8143 | Withdrawn due to claiming internal priority |