EP1609960A1 - Lever type cam follower - Google Patents
Lever type cam follower Download PDFInfo
- Publication number
- EP1609960A1 EP1609960A1 EP05010811A EP05010811A EP1609960A1 EP 1609960 A1 EP1609960 A1 EP 1609960A1 EP 05010811 A EP05010811 A EP 05010811A EP 05010811 A EP05010811 A EP 05010811A EP 1609960 A1 EP1609960 A1 EP 1609960A1
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- EP
- European Patent Office
- Prior art keywords
- cam follower
- lever
- steel
- hardness
- hardening
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
Definitions
- the invention relates to a non-cutting produced from a steel sheet lever-like Cam follower for a valve train of an internal combustion engine for acting at least one gas exchange valve.
- valve drive mechanism In an automotive internal combustion engine is a valve drive mechanism to drive intake valves and exhaust valves in synchronism with the engine revolution available.
- the valve drive mechanism generally includes a camshaft and a cam follower, the rotational movement of the camshaft in a reciprocating motion to the inlet and inlet axial drive Exhaust valves converted.
- the cam follower comprises a rocker arm of the Cam is driven, which are supported by the camshaft.
- case hardening consists of carburizing or carbonitriding with subsequent hardening either immediately afterwards or after an intermediate cooling and reheating to a suitable hardening temperature. Depending on the required Use properties or the requirements of the following Processing is tempered after hardening or deep-frozen and tempered. Case hardening serves the edge layer of workpieces made of steel a much higher hardness and the workpiece better mechanical To give properties. For this purpose, the surface layer before curing with carbon (carburizing) or carbon and nitrogen (carbonitriding) enriched. The additional nitrogen enrichment causes compared to the Carburizing by changing the conversion behavior in the surface layer a higher hardenability and a higher tempering resistance after hardening.
- the lever-type cam followers produced in this way has the disadvantage that the corresponding heat treatment of the insert material very time consuming and expensive.
- the invention is therefore based on the object, the production costs for a Lever-like cam follower made of sheet metal decisively to reduce.
- this object is achieved by the characterizing part of Claim 1 in conjunction with the preamble solved by a cold-workable hardenable tempering steel is used.
- the core hardness has a value of ⁇ 600 HV and an edge hardness ⁇ 680 HV having the core hardness in the range between 600 and 650 HV and marginal hardness in the range between 680 and 700 HV.
- lever-like cam follower made of a tempering steel brand C45M with 0.39-0.46% C, 0.15% Si, 0.55-0.70% Mn, 0.020% P, 0.07% S, 0.25-0.40% Cr, 0.020 - 0.060% Al, 0.0040 - 0.0100% N 2 , 0.10 - 0.20% Ni, 0.05 - 0.10% Mo, to 0.005% Sn, to 0.002% Sb, total Cu, Ni , Mn, Cr 1.00 to 1.45% is used.
- This cold formable hardenable steel is an isotropic fine grain steel with high purity. Its thermoformability and formability is comparable to previously used cold-rolled materials, in its hardenability, however, he is significantly above conventional steels. He is due to its high core hardness higher statically and dynamically loadable than parts made of conventional steel. This reduces plastic deformation in places of high static load.
- Figures 1 and 2 show an example of a cam follower 1 in the form of a Toggle lever, which is made of a sheet material and a finger-like Has geometry. Between its parallel side walls 2 a runs Crossbar 3, which connects the two side walls 2 with each other, so that a U-shaped profile is formed, which encloses the gap 4. At a side facing away from the gap 4 bottom 5 is in the range of the end 6 an unillustrated shank end of a gas exchange valve at. This is mounted between two webs 7, which also at the bottom 5 lost.
- the side walls 2 have two mutually aligned recesses 8, in which the axis 9 is inserted. On this axis 9 is about the rolling bearing 10, the roller 11 stored.
- roller 11 With the roller 11 is an unrepresented Cam of a camshaft in operative connection.
- the cam follower 1 In the area of another end 12 is the cam follower 1 on a head of a supporting element, not shown stored, wherein both parts by the holding member 13 with each other are connected.
- the webs 7 extend integrally as an extension the side walls 2 and 180 ° in the region of the end 6 to the underside 5 bent.
- the cam follower 1 is in the region of the end 6 in his Width reduced.
- Such a cam follower 1 is produced without cutting from a 3.5 mm thick strip of the tempered steel C45M with the following chemical composition: 0.42 - 0.46% C, to 0.15% Si, 0.60 - 0.70% Mn, to 0.020% P, to 0.07% S, 0.30 - 0.40% Cr, 0.020 0.060% Al, 0.0040-0.0100% N 2 , 0.10-0.20% Ni, 0.05-0.10% Mo, to 0.005% Sn, to 0.002% Sb, to 0.15 % Cu, sum of Cu, Ni, Mn, Cr 1.05 to 1.45%.
- a steel C45M according to the invention follows its heat treatment unlike a conventional steel of the Brand DC04M only a flat towards the middle of the belt sloping hardness curve on. While the edge hardness is to be set with about 750 HV, the core hardness decreases a value of about 650 HV. Due to this optimized hardenability, the to vote on the component geometry and the load, this points Steel has a high core hardness, toughness and elasticity. This high core hardness The cold - workable, hardenable steel ultimately ensures that the the savings described above, such as reducing the wall cross-section, Increasing the strength and reducing the total weight possible are.
- a cam follower 1 made of case hardening steel C16M is a classic according to FIG Case hardened, with the lever 1 120 min at a Temperature of 880 ° C is maintained. After that, the part will open Quenched room temperature and then left for 120 min. This is to be understood as meaning a heat treatment that is cured and hardened relatively brittle material state should give a higher toughness. She consists in heating to temperatures in the range of 160 - 650 ° sufficient holding time and cooling again to room temperature. By duration and cooling again to room temperature. By starting it will the hardness decreases, the strength decreases and the ductility and the Toughness is increasing. Case hardening therefore creates a quasi-material composite, wherein the edge provided with the maximum achievable hardness is and the core is much softer.
- cam follower 1 is made of tempered steel C45M, so it is first hardened slightly carburizing, where it is 30 min at 840 ° C. to hold. This is followed by quenching to room temperature and a tempering, which also extends to 120 minutes. It is clear that in the first case, the actual hardening process during case hardening 120 min and in the second case only 30 minutes, so that during the actual hardening process a time saving of 75% can be realized. It is further from Advantage that even hardening at a lower by 40 ° C temperature possible is what means a significant energy saving.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Die Erfindung betrifft einen spanlos aus einem Stahlblech hergestellten hebelartigen Nockenfolger für einen Ventiltrieb einer Brennkraftmaschine zur Beaufschlagung wenigstens eines Gaswechselventils.The invention relates to a non-cutting produced from a steel sheet lever-like Cam follower for a valve train of an internal combustion engine for acting at least one gas exchange valve.
In einem Kraftfahrzeugverbrennungsmotor ist ein Ventilantriebsmechanismus zum Antrieb von Einlassventilen und Auslassventilen synchron zur Motorumdrehung vorhanden. Der Ventilantriebsmechanismus umfasst im allgemeinen eine Nockenwelle sowie einen Nockenstößel, der die Drehbewegung der Nockenwelle in eine Hin- und Herbewegung zum axialen Antrieb der Einlass- und Auslassventile umwandelt. Der Nockenstößel umfasst einen Kipphebel, der von Nocken angetrieben wird, die von der Nockenwelle getragen werden. Mit dem Fortschritt der Kraftfahrzeugtechnologie auf dem Gebiet von Motoren mit höchster Leistung steigt der Bedarf an kompakten und leichten Motoren mit langer Lebensdauer und wartungsfreier Konstruktion.In an automotive internal combustion engine is a valve drive mechanism to drive intake valves and exhaust valves in synchronism with the engine revolution available. The valve drive mechanism generally includes a camshaft and a cam follower, the rotational movement of the camshaft in a reciprocating motion to the inlet and inlet axial drive Exhaust valves converted. The cam follower comprises a rocker arm of the Cam is driven, which are supported by the camshaft. With the Advances in automotive technology in the field of engines with Highest performance increases the need for compact and light engines long life and maintenance-free design.
In diesem Zusammenhang ist es allgemein bekannt, dass derartige aus Stahlblech
spanlos hergestellte hebelartige Nockenfolger in der Regel aus einem
Einsatzmaterial bestehen, beispielsweise aus 16 Mn Cr 5. Das Einsatzhärten
besteht aus Aufkohlen oder Carbonitrieren mit nachfolgendem Härten entweder
unmittelbar anschließend daran oder nach einem Zwischenkühlen und Wiedererwärmen
auf eine zweckentsprechende Härtetemperatur. Je nach den geforderten
Gebrauchseigenschaften bzw. den Erfordernissen der nachfolgenden
Bearbeitung wird nach dem Härten noch angelassen oder tiefgekühlt und angelassen.
Das Einsatzhärten dient dazu, der Randschicht von Werkstücken
aus Stahl eine wesentlich höhere Härte und dem Werkstück bessere mechanische
Eigenschaften zu verleihen. Hierzu wird die Randschicht vor dem Härten
mit Kohlenstoff (Aufkohlen) oder Kohlenstoff und Stickstoff (Carbonitrieren)
angereichert. Die zusätzliche Stickstoffanreicherung bewirkt gegenüber dem
Aufkohlen durch Veränderung des Umwandlungsverhaltens in der Randschicht
eine höhere Härtbarkeit und nach dem Härten eine höhere Anlassbeständigkeit.In this context, it is well known that such steel sheet
non-cutting produced lever-type cam follower usually from a
Feedstock consist, for example, 16
Derartig hergestellten hebelartigen Nockenfolgern haftet der Nachteil an, dass die entsprechende Wärmebehandlung des Einsatzwerkstoffes sehr zeitaufwendig und teuer ist.The lever-type cam followers produced in this way has the disadvantage that the corresponding heat treatment of the insert material very time consuming and expensive.
Der Erfindung liegt daher die Aufgabe zugrunde, die Herstellkosten für einen hebelartigen Nockenfolger aus Blech entscheident zu reduzieren.The invention is therefore based on the object, the production costs for a Lever-like cam follower made of sheet metal decisively to reduce.
Erfindungsgemäß wird diese Aufgabe nach dem kennzeichnenden Teil von Anspruch 1 in Verbindung mit dessen Oberbegriff dadurch gelöst, dass ein kaltumformbarer durchhärtbarer Vergütungsstahl verwendet ist.According to the invention, this object is achieved by the characterizing part of Claim 1 in conjunction with the preamble solved by a cold-workable hardenable tempering steel is used.
Durch das Umwandlungshärten über den gesamten Querschnitt des hebelartigen Nockenfolgers wird eine nahezu homogene gehärtete Zone erreicht, die neben einer hohen Festigkeit zugleich eine gute Zähigkeit aufweist. Durch die Umwandlungshärtung wird die Festigkeit gesteigert, zugleich aber auch das Gefüge neu gebildet und gefeint. Zwar wird beim Anlassen die zuvor erreichte Festigkeitzunahme teilweise wieder abgebaut, jedoch die Zähigkeit über den ursprünglichen Wert hinaus erhöht. Derart erfindungsgemäß hergestellte hebelartige Nockenfolger können bei gleichem Querschnitt höher belastet werden oder bei gleichen Belastungen einen geringeren Querschnitt aufweisen. Ein anderer Vorteil dieser erfindungsgemäßen hebelartigen Nockenfolger liegt darin, dass sich aufgrund der unterschiedlichen Wärmebehandlung ein weiteres Einsparpotential realisieren lässt. Zum einen kann die Härtedurchlaufzeit und zum anderen die Härtetemperatur herabgesetzt werden. Auch ist die höhere Maß- und Formstabilität der erfindungsgemäßen hebelartigen Nockenfolger von Vorteil.By the conversion hardening over the entire cross-section of the lever-like Cam follower is achieved a nearly homogeneous hardened zone, the In addition to a high strength at the same time has a good toughness. By the Conversion hardening increases the strength, but at the same time that too Structure newly formed and tufted. Although, when starting the previously achieved Strength increase partially degraded again, but the toughness over the initial value increased. Such lever-like produced according to the invention Cam followers can be loaded higher with the same cross section or have a smaller cross-section at the same loads. One Another advantage of this lever-type cam follower according to the invention is that that due to the different heat treatment another Savings potential can be realized. On the one hand, the hardening cycle time and on the other hand, the hardening temperature can be reduced. Also, the higher one Dimensional and dimensional stability of the lever-like cam follower according to the invention advantageous.
Nach den Ansprüchen 2 und 3 hat es sich als besonders vorteilhaft erwiesen,
wenn die Kernhärte einen Wert von ≥ 600 HV und eine Randhärte ≥ 680 HV
aufweist, wobei die Kernhärte im Bereich zwischen 600 und 650 HV und Randhärte
im Bereich zwischen 680 und 700 HV liegt.According to
Schließlich ist nach Anspruch 4 vorgesehen, dass der hebelartige Nockenfolger
aus einem Vergütungsstahl der Marke C45M mit
0,39 - 0,46% C, bis 0,15 % Si, 0,55 - 0,70 % Mn, bis 0,020 % P, bis 0,07 % S,
0,25 - 0,40 % Cr, 0,020 - 0,060 % Al, 0,0040 - 0,0100 % N2, 0,10 - 0,20 % Ni,
0,05 - 0,10 % Mo, bis 0,005 % Sn, bis 0,002 % Sb, Summe Cu, Ni, Mn, Cr 1,00
bis 1,45 %
verwendet ist.Finally, it is provided according to
0.39-0.46% C, 0.15% Si, 0.55-0.70% Mn, 0.020% P, 0.07% S, 0.25-0.40% Cr, 0.020 - 0.060% Al, 0.0040 - 0.0100% N 2 , 0.10 - 0.20% Ni, 0.05 - 0.10% Mo, to 0.005% Sn, to 0.002% Sb, total Cu, Ni , Mn, Cr 1.00 to 1.45%
is used.
Dieser kaltumformbare durchhärtbare Stahl ist ein isotroper Feinkornstahl mit hoher Reinheit. Seine Tiefziehfähigkeit und Umformbarkeit ist vergleichbar mit bisher verwendeten Kaltband-Werkstoffen, in seiner Härtbarkeit liegt er jedoch deutlich über konventionellen Stählen. Aufgrund seiner hohen Kernhärte ist er höher statisch und dynamisch belastbar als Teile aus herkömmlichen Stahl. Dies vermindert plastische Verformungen an Stellen hoher statischer Belastung. This cold formable hardenable steel is an isotropic fine grain steel with high purity. Its thermoformability and formability is comparable to previously used cold-rolled materials, in its hardenability, however, he is significantly above conventional steels. He is due to its high core hardness higher statically and dynamically loadable than parts made of conventional steel. This reduces plastic deformation in places of high static load.
Die Erfindung wird an nachstehendem Ausführungsbeispiel näher beschrieben.The invention will be described in more detail in the following embodiment.
Es zeigen:
- Figur 1
- einen Längsschnitt durch einen Nockenfolger,
Figur 2- eine Draufsicht auf den Nockenfolger gemäß Figur 1,
Figur 3- einen Härtevergleich zwischen einem klassischen Stahl und einem erfindungsgemäßen Stahl und
Figur 4- eine Wärmebehandlung von klassischem Stahl und dem erfindungsgemäßen Stahl.
- FIG. 1
- a longitudinal section through a cam follower,
- FIG. 2
- a plan view of the cam follower of Figure 1,
- FIG. 3
- a hardness comparison between a classic steel and a steel according to the invention and
- FIG. 4
- a heat treatment of classic steel and steel according to the invention.
Die Figuren 1 und 2 zeigen beispielhaft einen Nockenfolger 1 in Form eines
Schlepphebels, der aus einem Blechwerkstoff gefertigt ist und eine fingerartige
Geometrie aufweist. Zwischen seinen parallelen Seitenwänden 2 verläuft ein
Querbalken 3, der die beiden Seitenwände 2 miteinander verbindet, so dass
ein im Querschnitt U-förmiges Profil gebildet ist, das den Zwischenraum 4 einschließt.
An einer dem Zwischenraum 4 abgewandten Unterseite 5 liegt im Bereich
des Endes 6 ein nicht dargestelltes Schaftende eines Gaswechselventils
an. Dieses ist zwischen zwei Stegen 7 gelagert, die ebenfalls an der Unterseite
5 verlaufen. Die Seitenwände 2 besitzen zwei zueinander fluchtende Aussparungen
8, in die die Achse 9 gesteckt ist. Auf dieser Achse 9 ist über das Wälzlager
10 die Rolle 11 gelagert. Mit der Rolle 11 steht ein nicht dargestellter
Nocken einer Nockenwelle in Wirkverbindung. Im Bereich eines weiteren Endes
12 ist der Nockenfolger 1 auf einem Kopf eines nicht dargestellten Abstützelements
gelagert, wobei beide Teile durch das Halteelement 13 miteinander
verbunden sind. Die Stege 7 erstrecken sich einteilig als Verlängerung
der Seitenwände 2 und sind um 180° im Bereich des Endes 6 an die Unterseite
5 gebogen. Gleichzeitig ist der Nockenfolger 1 im Bereich des Endes 6 in seiner
Breite verkleinert.Figures 1 and 2 show an example of a cam follower 1 in the form of a
Toggle lever, which is made of a sheet material and a finger-like
Has geometry. Between its parallel side walls 2 a runs
Crossbar 3, which connects the two
Ein derartiger Nockenfolger 1 wird spanlos aus einem 3,5 mm starkem Band
des Vergütungsstahls C45M mit nachstehender chemischer Zusammensetzung
hergestellt:
0,42 - 0,46 % C, bis 0,15 % Si, 0,60 - 0,70 % Mn, bis 0,020 % P, bis 0,07 % S,
0,30 - 0,40 % Cr, 0,020 - 0,060 % Al, 0,0040 - 0,0100 % N2, 0,10 - 0,20 % Ni,
0,05 - 0,10 % Mo, bis 0,005 % Sn, bis 0,002 % Sb, bis 0,15 % Cu, Summe Cu,
Ni, Mn, Cr 1,05 bis 1,45 %.Such a cam follower 1 is produced without cutting from a 3.5 mm thick strip of the tempered steel C45M with the following chemical composition:
0.42 - 0.46% C, to 0.15% Si, 0.60 - 0.70% Mn, to 0.020% P, to 0.07% S, 0.30 - 0.40% Cr, 0.020 0.060% Al, 0.0040-0.0100% N 2 , 0.10-0.20% Ni, 0.05-0.10% Mo, to 0.005% Sn, to 0.002% Sb, to 0.15 % Cu, sum of Cu, Ni, Mn, Cr 1.05 to 1.45%.
Wie aus Figur 3 ersichtlich, weist ein erfindungsgemäßer Stahl C45M nach seiner Wärmebehandlung im Gegensatz zu einem herkömmlichen Stahl der Marke DC04M einen nur flach in Richtung Bandmitte abfallenden Härteverlauf auf. Während die Randhärte mit etwa 750 HV anzusetzen ist, nimmt die Kernhärte einen Wert von etwa 650 HV an. Durch diese optimierte Härtbarkeit, die auf die Bauteilgeometrie und die Beanspruchung abzustimmen ist, weist dieser Stahl eine hohe Kernhärte, Zähigkeit und Elastizität auf. Diese hohe Kernhärte des kaltumformbaren durchhärtbaren Stahls sorgt letztendlich dafür, dass die vorstehend beschriebene Einsparpotentiale wie Verringerung des Wandquerschnitts, Erhöhung der Festigkeit sowie eine Reduzierung des Gesamtgewichtes möglich sind.As can be seen from FIG. 3, a steel C45M according to the invention follows its heat treatment unlike a conventional steel of the Brand DC04M only a flat towards the middle of the belt sloping hardness curve on. While the edge hardness is to be set with about 750 HV, the core hardness decreases a value of about 650 HV. Due to this optimized hardenability, the to vote on the component geometry and the load, this points Steel has a high core hardness, toughness and elasticity. This high core hardness The cold - workable, hardenable steel ultimately ensures that the the savings described above, such as reducing the wall cross-section, Increasing the strength and reducing the total weight possible are.
Ein Nockenfolger 1 aus dem Einsatzstahl C16M wird nach Figur 4 einem klassischen Einsatzhärten unterworfen, wobei der Hebel 1 120 min bei einer Temperatur von 880°C gehalten wird. Danach wird das Teil auf Raumtemperatur abgeschreckt und anschließend 120 min angelassen. Darunter ist eine Wärmebehandlung zu verstehen, die dem gehärteten und relativ spröden Werkstoffzustand eine höhere Zähigkeit verleihen soll. Sie besteht in einem Erwärmen auf Temperaturen im Bereich von 160 - 650° mit ausreichender Haltedauer und Abkühlen wiederum auf Raumtemperatur. Durch dauer und Abkühlen wiederum auf Raumtemperatur. Durch das Anlassen wird die Härte verringert, die Festigkeit nimmt ab und die Verformbarkeit und die Zähigkeit nehmen zu. Durch das Einsatzhärten entsteht also ein Quasi-Werkstoffverbund, wobei der Rand mit der maximal erreichbaren Härte versehen ist und der Kern wesentlich weicher ist.A cam follower 1 made of case hardening steel C16M is a classic according to FIG Case hardened, with the lever 1 120 min at a Temperature of 880 ° C is maintained. After that, the part will open Quenched room temperature and then left for 120 min. This is to be understood as meaning a heat treatment that is cured and hardened relatively brittle material state should give a higher toughness. she consists in heating to temperatures in the range of 160 - 650 ° sufficient holding time and cooling again to room temperature. By duration and cooling again to room temperature. By starting it will the hardness decreases, the strength decreases and the ductility and the Toughness is increasing. Case hardening therefore creates a quasi-material composite, wherein the edge provided with the maximum achievable hardness is and the core is much softer.
Wird der gleiche Nockenfolger 1 aus dem Vergütungsstahl C45M hergestellt, so wird dieser zunächst leicht aufkohlend gehärtet, wobei er 30 min auf 840°C zu halten ist. Danach folgt ebenfalls ein Abschrecken auf Raumtemperatur und ein Anlassen, das sich ebenfalls auf 120 min erstreckt. Es ist klar ersichtlich, dass im ersten Falle der eigentliche Härtevorgang beim Einsatzhärten 120 min und im zweiten Falle lediglich 30 min beträgt, so dass beim eigentlichen Härtevorgang eine Zeitersparnis von 75 % realisiert werden kann. Es ist weiter von Vorteil, dass auch ein Härten bei einer um 40°C niedrigeren Temperatur möglich ist, was eine wesentliche Energieeinsparung bedeutet. Schließlich ist auch von Vorteil, dass bei einem erfindungsgemäßen Nockenfolger 1 aus dem Stahl der Marke C45M im Vergleich zu einem einsatzgehärteten Nockenfolger aus dem Stahl der Marke C16M dieser eine wesentlich geringere Verzugs- bzw. Formänderung aufweist und daher nicht spanend nachbearbeitet werden muß. If the same cam follower 1 is made of tempered steel C45M, so it is first hardened slightly carburizing, where it is 30 min at 840 ° C. to hold. This is followed by quenching to room temperature and a tempering, which also extends to 120 minutes. It is clear that in the first case, the actual hardening process during case hardening 120 min and in the second case only 30 minutes, so that during the actual hardening process a time saving of 75% can be realized. It is further from Advantage that even hardening at a lower by 40 ° C temperature possible is what means a significant energy saving. Finally, too advantageous that in a cam follower 1 according to the invention from the steel brand C45M compared to a case hardened cam follower the steel of the brand C16M this much less default or Has change in shape and therefore does not have to be post-machined.
- 11
- Nockenfolgercam follower
- 22
- SeitenwandSide wall
- 33
- Querbalkencrossbeam
- 44
- Zwischenraumgap
- 55
- Unterseitebottom
- 66
- EndeThe End
- 77
- Stegweb
- 88th
- Aussparungrecess
- 99
- Achseaxis
- 1010
- Wälzlagerroller bearing
- 1111
- Rollerole
- 1212
- EndeThe End
- 1313
- Halteelementretaining element
Claims (4)
mit 0,39 - 0,46% C, bis 0,15 % Si, 0,55-0,70 % Mn, bis 0,020 % P, bis 0,07 % S, 0,25 - 0,40 % Cr, 0,020 - 0,060 % Al, 0,0040 - 0,0100 % N2, 0,10 - 0,20 % Ni, 0,05 - 0,10 % Mo, bis 0,005 % Sn, bis 0,002 % Sb, bis 0,15 % Cu, Summe Cu, Ni, Mn, Cr 1,00 bis 1,45 %
verwendet ist.Lever-type cam follower (1) according to claim 1, characterized in that a tempering steel brand C45M
with 0.39-0.46% C, up to 0.15% Si, 0.55-0.70% Mn, up to 0.020% P, up to 0.07% S, 0.25-0.40% Cr, 0.020-0.060% Al, 0.0040-0.0100% N2, 0.10-0.20% Ni, 0.05-0.10% Mo, to 0.005% Sn, to 0.002% Sb, to 0.15 % Cu, sum of Cu, Ni, Mn, Cr 1.00 to 1.45%
is used.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004028667 | 2004-06-12 | ||
| DE102004028667A DE102004028667A1 (en) | 2004-06-12 | 2004-06-12 | Lever-like cam follower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1609960A1 true EP1609960A1 (en) | 2005-12-28 |
| EP1609960B1 EP1609960B1 (en) | 2007-03-14 |
Family
ID=34936664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05010811A Expired - Fee Related EP1609960B1 (en) | 2004-06-12 | 2005-05-19 | Lever type cam follower |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8328959B2 (en) |
| EP (1) | EP1609960B1 (en) |
| JP (1) | JP2006046325A (en) |
| DE (2) | DE102004028667A1 (en) |
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| WO2011003865A1 (en) * | 2009-07-08 | 2011-01-13 | Schaeffler Technologies Gmbh & Co. Kg | Method for producing a lift transfer component |
| CN103667955A (en) * | 2013-12-20 | 2014-03-26 | 齐齐哈尔轨道交通装备有限责任公司 | Steel with high impact strength and casting prepared therefrom |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006002994A1 (en) * | 2006-01-21 | 2007-08-02 | Schaeffler Kg | Lever-like cam follower |
| US7836860B2 (en) | 2007-11-21 | 2010-11-23 | Charter Manufacturing Co., Inc. | Engine rocker arm |
| JP5164545B2 (en) * | 2007-12-07 | 2013-03-21 | 株式会社オティックス | Valve operating device and rocker arm unit |
| JP5517915B2 (en) * | 2010-12-28 | 2014-06-11 | 株式会社オティックス | Rocker arm unit |
| DE102011089396A1 (en) | 2011-12-21 | 2013-06-27 | Schaeffler Technologies AG & Co. KG | Cam follower for gas shuttle valve of combustion engine, has wave-shaped portion that is formed on end portion so as to support concave mold portion in end portion of cam portion |
| WO2014143817A1 (en) | 2013-03-15 | 2014-09-18 | Roller Bearing Company Of America, Inc. | Needle roller cam follower for higher mileage applications of light, medium and heavy duty vehicles |
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| US4829647A (en) * | 1987-12-14 | 1989-05-16 | Ford Motor Company | Method of making low friction finger follower rocker arms |
| US4969957A (en) * | 1988-08-27 | 1990-11-13 | Mazda Motor Corporation | Method of producing a mechanical component with superior fatigue strength |
| US6003482A (en) * | 1996-08-05 | 1999-12-21 | Motorenfabrik Hatz Gmbh & Co. Kg | Rocker arm for an internal combustion engine |
| US20030106514A1 (en) * | 1998-03-12 | 2003-06-12 | Nsk Ltd. | Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3909902B2 (en) * | 1996-12-17 | 2007-04-25 | 株式会社小松製作所 | Steel parts for high surface pressure resistance and method for producing the same |
| US5819694A (en) * | 1997-05-15 | 1998-10-13 | Welles Manufacturing Company | Stamped roller-type cam followers with added height |
| JP2000054810A (en) * | 1998-08-07 | 2000-02-22 | Nippon Seiko Kk | Cam follower with plate rocker arm |
| DE10020118B4 (en) * | 2000-04-22 | 2009-11-12 | Schaeffler Kg | Method for verifying sealability of selected exhaust valve of selected cylinder in internal combustion engine in motor vehicle, involves concluding sealability of valve based on measured values of lambda sensor in one of exhaust gas strands |
| JP2003206708A (en) * | 2002-01-16 | 2003-07-25 | Ntn Corp | Cam follower with roller |
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2004
- 2004-06-12 DE DE102004028667A patent/DE102004028667A1/en not_active Withdrawn
-
2005
- 2005-05-19 EP EP05010811A patent/EP1609960B1/en not_active Expired - Fee Related
- 2005-05-19 DE DE502005000466T patent/DE502005000466D1/en active Active
- 2005-06-02 US US11/143,254 patent/US8328959B2/en not_active Expired - Fee Related
- 2005-06-10 JP JP2005170702A patent/JP2006046325A/en active Pending
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| US4829647A (en) * | 1987-12-14 | 1989-05-16 | Ford Motor Company | Method of making low friction finger follower rocker arms |
| US4969957A (en) * | 1988-08-27 | 1990-11-13 | Mazda Motor Corporation | Method of producing a mechanical component with superior fatigue strength |
| US6003482A (en) * | 1996-08-05 | 1999-12-21 | Motorenfabrik Hatz Gmbh & Co. Kg | Rocker arm for an internal combustion engine |
| US20030106514A1 (en) * | 1998-03-12 | 2003-06-12 | Nsk Ltd. | Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003865A1 (en) * | 2009-07-08 | 2011-01-13 | Schaeffler Technologies Gmbh & Co. Kg | Method for producing a lift transfer component |
| CN102421994A (en) * | 2009-07-08 | 2012-04-18 | 谢夫勒科技有限两合公司 | Method for producing a lift transfer component |
| US8590149B2 (en) | 2009-07-08 | 2013-11-26 | Schaeffler Technologies AG & Co. KG | Method of manufacturing a lift transmitting component |
| CN102421994B (en) * | 2009-07-08 | 2014-07-02 | 谢夫勒科技股份两合公司 | Method for producing a lift transfer component |
| CN103667955A (en) * | 2013-12-20 | 2014-03-26 | 齐齐哈尔轨道交通装备有限责任公司 | Steel with high impact strength and casting prepared therefrom |
| CN103667955B (en) * | 2013-12-20 | 2016-02-17 | 齐齐哈尔轨道交通装备有限责任公司 | A kind of steel with high impact strength and foundry goods thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004028667A1 (en) | 2005-12-29 |
| DE502005000466D1 (en) | 2007-04-26 |
| US8328959B2 (en) | 2012-12-11 |
| JP2006046325A (en) | 2006-02-16 |
| US20050274437A1 (en) | 2005-12-15 |
| EP1609960B1 (en) | 2007-03-14 |
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