DE10244151A1 - Coated hollow camshaft - Google Patents

Coated hollow camshaft Download PDF

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Publication number
DE10244151A1
DE10244151A1 DE10244151A DE10244151A DE10244151A1 DE 10244151 A1 DE10244151 A1 DE 10244151A1 DE 10244151 A DE10244151 A DE 10244151A DE 10244151 A DE10244151 A DE 10244151A DE 10244151 A1 DE10244151 A1 DE 10244151A1
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DE
Germany
Prior art keywords
ihu
camshaft
ceramic
coated
metal
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Withdrawn
Application number
DE10244151A
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German (de)
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to DE10244151A priority Critical patent/DE10244151A1/en
Priority to ES03798177T priority patent/ES2262023T3/en
Priority to EP03798177A priority patent/EP1556585B1/en
Priority to DE50302979T priority patent/DE50302979D1/en
Priority to AT03798177T priority patent/ATE323216T1/en
Priority to AU2003275979A priority patent/AU2003275979A1/en
Priority to PCT/EP2003/010581 priority patent/WO2004029421A1/en
Publication of DE10244151A1 publication Critical patent/DE10244151A1/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
    • C23C4/06—Metallic material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • 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
    • F01L2301/00—Using particular materials
    • 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
    • F01L2301/00—Using particular materials
    • F01L2301/02—Using ceramic materials
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Noodles (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Ceramic Products (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Control Of Electric Motors In General (AREA)
  • Manipulator (AREA)

Abstract

The invention relates to a method for producing a device for converting a rotatory motion into a translatory motion during which at least one functional layer (3) made of a ceramic, metal-ceramic or metallic material is applied at least in sections while clamping it in a predominantly mechanical manner to a surface of the device. The invention also relates to the corresponding device for converting a rotatory motion into a translatory motion.

Description

Technisches Anwendungsgebiettechnical field of use

Die Erfindung betrifft eine Nockenwelle, vorzugsweise für Motoren von Kraftfahrzeugen. Es können auch Elemente sein, die eine Rotationsbewegung in eine Hubbewegung umsetzen, indem die Hubelemente auf rotierenden Scheiben mit unterschiedlicher Krümmung laufen und entgegen der Drehrichtung bewegt werden.The invention relates to a camshaft, preferably for Motors for automobiles. It can also be elements that convert a rotational movement into a lifting movement by the lifting elements run on rotating disks with different curvature and be moved against the direction of rotation.

Stand der Technik, Nachteile des Standes der Technik Der gegenwärtige Stand der Prozesse zur Nockenwellenfertigung ist dadurch gekennzeichnet, dass noch überwiegend Schalenhartgusswellen, die aber teilweise nachträglich ausgebohrt werden oder auch hohl gegossen sind, in der Großserie eingesetzt werden. Für höhere Festigkeitsanforderungen gibt es geschmiedete Varianten. Die am Markt eingeführten Verfahren der als massiv bezeichneten Nockenwellen dominieren wegen des Preises, dem vertretbarem technischen Kompromiss, sowie langjährigen Erfahrungen bei der Massenfertigung.State of the art, disadvantages of State of the art The current The state of the processes for camshaft production is characterized by that still predominantly Shell cast iron shafts, which are partially drilled out later or are also cast hollow, are used in large series. For higher strength requirements there are forged variants. The procedures introduced on the market of the massive camshafts dominate because of the price, the reasonable technical compromise, as well as many years of experience in mass production.

Vorzugsweise im Bereich der Rollenschlepphebelsysteme eingesetzt, beginnen sich gebaute Nockenwellen durchzusetzen. Die Fixierung der Nocken auf der Welle erfolgt beispielsweise durch Aufpressen oder und durch partielles Aufweiten des Wellenkörpers direkt unter dem Nocken. Dabei werden die Nocken einzeln und nacheinander mit der Welle verbunden. Trotz der Grenzen in der konstruktiven Gestaltungsfreiheit und der lediglich kraft- oder formschlüssigen Verbindung der Nocken mit der Welle sowie den relativ hohen Kosten verglichen mit der konventionellen Gusswelle (ca. 30 Prozent höher), kommen die gebauten Nockenwellen überall dort zum Einsatz, wo der Werkstoff Guss seine technischen Grenzen erreicht hat. Die derzeit realisierte Masseneinsparung gegenüber massiv gegossenen Nockenwellen liegt bei 20-40 Prozent.Preferably in the area of roller rocker arm systems installed camshafts begin to prevail. The The cams are fixed on the shaft, for example, by Press on or and by partially expanding the shaft body directly under the cam. The cams are individually and one after the other connected to the shaft. Despite the limitations in the constructive Design freedom and the only non-positive or positive connection the cam compared to the shaft and the relatively high cost with the conventional cast shaft (approx. 30 percent higher) the built camshafts everywhere wherever the material cast has its technical limits has reached. The currently realized mass savings compared to massive cast camshafts is 20-40 percent.

Patentrechtlich ist der Stand der Technik in DE 199 07 258 C1 dargelegt. Die durchgeführte Patentrecherche ergab keine weiterführenden Erkenntnisse.The state of the art in patent law DE 199 07 258 C1 explained. The patent search carried out revealed no further findings.

Die in DE 199 07 258 C1 aufgezeigte Lösung weist jedoch erhebliche Mängel auf. Aufgrund der hohen thermischen Belastung der Nocken nach dem in DE 199 07 258 C1 beschriebenen Verfahren, bei dem die Nocken aufgeschmolzen werden, kommt es zu Verzugserscheinung der Hohlwelle, was umfangreiche Nacharbeit erfordert. Die durch den Prozess des Innenhochdruckumformens (IHU-Prozess) erzeugte Kaltverfestigung wird zu mindestens teilweise wieder aufgehoben. Durch die Verwendung von Fülldrähten und Blechen ist die Werkstoffpalette für die Beschichtung stark eingeschränkt, z.B. können nichtleitende Werkstoffe.In the DE 199 07 258 C1 solution shown, however, has significant shortcomings. Due to the high thermal load on the cams after the DE 199 07 258 C1 described method, in which the cams are melted, there is a distortion of the hollow shaft, which requires extensive rework. The work hardening generated by the process of hydroforming (IHU process) is at least partially reversed. Due to the use of cored wires and sheets, the range of materials for the coating is severely limited, for example non-conductive materials.

wie Keramiken nicht aufgetragen werden. Ebenso sind durch die Verwendung der Fülldrähte keine definierten Strukturen bei Schichten aus Kompositwerkstoffen wie Metallkeramiken (Hartmetallen) herstellbar.how ceramics are not applied. As well are none due to the use of the cored wire defined structures for layers made of composite materials such as Metal ceramics (hard metals) can be produced.

Zusätzliches Verbesserungspotenzial ist hinsichtlich einer weiteren Gewichtsreduzierung, der Verringerung der Reibungsverluste, des Verschleißes und der Fertigungskosten vorhanden. Die ersten beiden Punkte sind mit einer Abnahme des Kraftstoffverbrauches der entsprechenden Motoren verbunden.Additional potential for improvement is in terms of further weight loss, the reduction friction losses, wear and tear and manufacturing costs available. The first two points are with a decrease in fuel consumption of the corresponding motors connected.

Mit der Erfindung gelöste AufgabeWith the invention dissolved task

Mit der Erfindung werden folgende Aufgaben gelöst: With the invention, the following are Tasks solved:

– Aufbringen einer verschleißfesten Schicht auf die Nocken einer mittels IHU geformten Welle, ohne dass ein thermischen Verzug der Welle entsteht.- Apply one wear-resistant Layer on the cams of an IHU-shaped shaft without the shaft is thermally distorted.

– Gewichts- und Reibungsreduzierung durch den Einsatz verschleißfester keramischer, metallkeramischer und metallischer Schichten- weight and friction reduction through the use of more wear-resistant ceramic, metal-ceramic and metallic layers

Grundzüge des LösungswegesBasics of the solution

  • – Erzeugen einer Nockenwelle mittels IHU analog zur Patentschrift DE 199 07 258 C1 oder DE 196 22 372.5 .- Generation of a camshaft using IHU analogous to the patent specification DE 199 07 258 C1 or DE 196 22 372.5 ,
  • – Die Schichtabscheidung erfolgt durch Verfahren, die im wesentlichen auf eine mechanische Verklammerung der Schicht auf der Unterlage beruhen und nur einen geringen thermischen Energieeintrag bewirken, vorzugsweise aus der Prozessgruppe des thermischen Spritzens (z. B. Plasmaspritzen, Hochgeschwindigkeitsflammspritzen [HVOF], u.a.)- The Layer deposition is done by procedures that are essentially mechanical clinging of the layer to the base based and cause only a low thermal energy input, preferably from the process group of thermal spraying (e.g. B. plasma spraying, high-speed flame spraying [HVOF], etc.)
  • – Hohe Flexibilität durch den Einsatz verschiedenster Werkstoffe, die an die Anforderungen an die Nockenwelle in den unterschiedlichen Motoren angepasst werden können. Leicht möglicher Einsatz neuer Werkstoffe wie metallische, keramische oder metallkeramische bis zu 1,5 mm dicke Verschleißschutzschichten.- Height flexibility through the use of various materials that meet the requirements can be adapted to the camshaft in the different engines can. Light potential Use of new materials such as metallic, ceramic or metal-ceramic up to 1.5 mm thick wear protection layers.
  • – Werkstoffbeispiele: Mo und Mo-selbstfließende Legierung als metallische Schichten, WC-Co, WC-CoCr, (Ti,Mo)(C,N)-NiCo als metallkeramische (Hartmetall-) Schichten, Al2O3-TiO2, Cr2O3, Tin–2Cr2O2n–1, als keramische Schichten- Material examples: Mo and Mo self-flowing alloy as metallic layers, WC-Co, WC-CoCr, (Ti, Mo) (C, N) -NiCo as metal-ceramic (hard metal) layers, Al 2 O 3 -TiO 2 , Cr 2 O 3 , Ti n – 2 Cr 2 O 2n – 1 , as ceramic layers

Erzeugte Verbesserungen und Vorteile gegenüber dem Stand der TechnikGenerated improvements and advantages over that State of the art

  • – Ein Verziehen der Nockenwelle entfällt, d.h. ein nachträgliches Richten der Welle nicht erforderlich ist.- On Warping of the camshaft is eliminated, i.e. an afterthought Straightening the shaft is not necessary.
  • – Durch den Einsatz neuer Werkstoffe (keramische oder metallkeramische bis 1,5 mm dicke Verschleißschutzschichten) werden die Verschleißfestigkeit und gleichzeitig auch die Reibungsverhältnisse auf dem Nocken verbessert. Der Einsatz keramischer Schichten bewirkt zusätzlich eine Gewichtreduzierung.- The use of new materials (ceramic or metal-ceramic wear protection layers up to 1.5 mm thick) improves the wear resistance and at the same time the friction on the cam. The use of ceramic layers causes additionally a weight reduction.
  • – Verminderung der Fertigungs- und Materialkosten im Vergleich zum Einsatz von Tragringen, z.B. aus 100 Cr5 gemäß DE 199 09 184 C2 .- Reduction of the manufacturing and material costs compared to the use of support rings, e.g. from 100 Cr5 according DE 199 09 184 C2 ,

Ausführungsbeispielembodiment

Die Erfindung wird an folgendem Ausführungsbeispiel erläutert:
Die dazugehörige Zeichnung zeigt einen Schnitt durch ein Teil einer Nockenwelle mit einem Nocken.The invention is explained using the following exemplary embodiment:
The accompanying drawing shows a section through part of a camshaft with a cam.

Beschichtet wurde eine durch IHU hergestellte Einlassnockenwelle 1 aus St 52 für einen Dreizylindervierventilmotor. Die Nocken 2 enthielten eine umlaufende Mulde (1 mm tief) als Bett für die aufzubringende Funktionsschicht 3. Die Breite der Mulde entspricht der Breite des Rollenschlepphebels.An intake camshaft manufactured by IHU was coated 1 from St 52 for a three-cylinder four-valve engine. The cams 2 contained a circumferential trough (1 mm deep) as a bed for the functional layer to be applied 3 , The width of the trough corresponds to the width of the roller rocker arm.

Beschichtet wurden die Wellen mittels atmosphärischem Plasmaspritzen mit einer Anlage MF-P-1000 der Firma GTV mbH, Luckenbach. Als Beschichtungspulver wurde eine Metallkeramik (Hartmetall) (Ti,Mo)(C,N)-37% Ni,Co verwendet. Zum Spritzen wurde ein Ar/N2-Plasma (50 Umin Ar, 11 l/min H2) bei einer Stromstärke von 630 A verwendet. Der Spritzabstand betrug 110 mm. Nach dern Beschichten wurden die Nocken auf Endmaß geschliffen. Der Test der Nockenwellen erfolgte in einem speziellen Prüfstand mit einer Flächenpressung von 1400 N/mm2, einer Drehzahl von 3500 U/min, einer Öltemperatur von 100 °C und Motorenöl Esso Ultron SAE 5W40.The shafts were coated by means of atmospheric plasma spraying with an MF-P-1000 system from GTV mbH, Luckenbach. A metal ceramic (hard metal) (Ti, Mo) (C, N) -37% Ni, Co was used as the coating powder. An Ar / N 2 plasma (50 Umin Ar, 11 l / min H 2 ) at a current of 630 A was used for spraying. The spray distance was 110 mm. After coating, the cams were ground to their final dimensions. The camshafts were tested in a special test bench with a surface pressure of 1400 N / mm 2 , a speed of 3500 rpm, an oil temperature of 100 ° C and motor oil Esso Ultron SAE 5W40.

Dabei konnten nach einer Laufzeit von 500 Std. (übliche Testzeit) kein Schichtausfall (Pittingbildung) beobachtet werden.Here, after a term of 500 hours (usual Test time) no layer failure (pitting) was observed.

Claims (7)

Hohle mittels IHU hergestellte Nockenwelle und Nockenlauffläche sowie gegebenenfalls die Lagerflächen mit verschleißfesten keramischen, metallkeramischer oder metallischen Schichten versehen.Hollow camshaft manufactured by IHU and Cam face and, if necessary, the storage areas with wear-resistant ceramic, metal-ceramic or metallic layers. IHU-Nockenwelle, gekennzeichnet dadurch, dass die aufgebrachte Schicht im wesentlichen durch mechanische Verklammerung mit der IHU-Nockenwelle verbunden ist.IHU camshaft, characterized in that the applied layer essentially by mechanical clamping is connected to the IHU camshaft. Beschichtete IHU-Nockenwelle nach Anspruch 1, bei dem ein Verfahren aus der Verfahrensgruppe des thermischen Spritzens zur Herstellung der Schicht genutzt wird.Coated IHU camshaft according to claim 1, at which is a process from the thermal spraying process group is used to produce the layer. Beschichtete IHU-Nockenwelle nach Anspruch 1, bei dem keramische Schichten durch thermisches Spritzen aufgetragen werden.Coated IHU camshaft according to claim 1, at the ceramic layers applied by thermal spraying become. Beschichtete IHU-Nockenwelle nach Anspruch 1, bei dem metallkeramische (Hartmetall-) Schichten durch thermisches Spritzen aufgetragen werden.Coated IHU camshaft according to claim 1, at the metal-ceramic (hard metal) layers by thermal spraying be applied. Beschichtete IHU-Nockenwelle nach Anspruch 1, bei dem metallische Schichten durch thermisches Spritzen aufgetragen werden.Coated IHU camshaft according to claim 1, at the metallic layers applied by thermal spraying become. Beschichtete IHU-Nockenwelle nach Anspruch 1-, bei der die Nocken eine umlaufende Mulde besitzen, die als Bett für die aufzubringende Funktionsschicht dient.Coated IHU camshaft according to claim 1-, at which the cams have a circumferential trough, which is used as a bed for the Functional layer serves.
DE10244151A 2002-09-23 2002-09-23 Coated hollow camshaft Withdrawn DE10244151A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE10244151A DE10244151A1 (en) 2002-09-23 2002-09-23 Coated hollow camshaft
ES03798177T ES2262023T3 (en) 2002-09-23 2003-09-23 A DEVICE FOR CONVERTING A MOVEMENT OF ROTATION IN A MOVEMENT OF TRANSFER; AS WELL AS A DEVICE MADE IN ACCORDANCE WITH THIS PROCEDURE.
EP03798177A EP1556585B1 (en) 2002-09-23 2003-09-23 Method for producing a device for converting a rotatory motion into a translatory motion, and a corresponding device produced according thereto
DE50302979T DE50302979D1 (en) 2002-09-23 2003-09-23 METHOD FOR PRODUCING A DEVICE FOR IMPLEMENTING A ROTATORY MOVEMENT IN A TRANSLATORIC MOVEMENT AND DEVICE MADE THEREFOR
AT03798177T ATE323216T1 (en) 2002-09-23 2003-09-23 METHOD FOR PRODUCING A DEVICE FOR CONVERTING A ROTATORY MOVEMENT INTO A TRANSLATORY MOVEMENT AND DEVICE PRODUCED THEREFROM
AU2003275979A AU2003275979A1 (en) 2002-09-23 2003-09-23 Method for producing a device for converting a rotatory motion into a translatory motion, and a corresponding device produced according thereto
PCT/EP2003/010581 WO2004029421A1 (en) 2002-09-23 2003-09-23 Method for producing a device for converting a rotatory motion into a translatory motion, and a corresponding device produced according thereto

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10244151A DE10244151A1 (en) 2002-09-23 2002-09-23 Coated hollow camshaft

Publications (1)

Publication Number Publication Date
DE10244151A1 true DE10244151A1 (en) 2004-04-08

Family

ID=31983992

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10244151A Withdrawn DE10244151A1 (en) 2002-09-23 2002-09-23 Coated hollow camshaft
DE50302979T Expired - Lifetime DE50302979D1 (en) 2002-09-23 2003-09-23 METHOD FOR PRODUCING A DEVICE FOR IMPLEMENTING A ROTATORY MOVEMENT IN A TRANSLATORIC MOVEMENT AND DEVICE MADE THEREFOR

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE50302979T Expired - Lifetime DE50302979D1 (en) 2002-09-23 2003-09-23 METHOD FOR PRODUCING A DEVICE FOR IMPLEMENTING A ROTATORY MOVEMENT IN A TRANSLATORIC MOVEMENT AND DEVICE MADE THEREFOR

Country Status (6)

Country Link
EP (1) EP1556585B1 (en)
AT (1) ATE323216T1 (en)
AU (1) AU2003275979A1 (en)
DE (2) DE10244151A1 (en)
ES (1) ES2262023T3 (en)
WO (1) WO2004029421A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115658A1 (en) * 2004-05-25 2005-12-08 Daimlerchrysler Ag Camshaft and method for the production thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025023A1 (en) 2009-06-10 2010-12-16 Neumayer Tekfor Holding Gmbh Method for producing a camshaft and corresponding camshaft

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082461B (en) * 1957-12-12 1960-05-25 Maybach Motorenbau Gmbh Shaft, especially camshaft
GB859327A (en) * 1957-12-12 1961-01-18 Maybach Motorenbau Gmbh Improvements in and relating to shafts
DE3303629C2 (en) * 1982-02-26 1986-04-10 Kokan Kako Co., Ltd., Yokohama, Kanagawa Method for manufacturing a camshaft with at least one eccentric cam
DE3342316A1 (en) * 1983-11-23 1985-05-30 Bayerische Motoren Werke AG, 8000 München Camshaft for internal combustion engines
DE19545991A1 (en) * 1995-12-09 1997-06-12 Eckel Gmbh & Co Kg Heinrich Lightweight camshaft with at least partly non-cylindrical outer surface
DE19617593A1 (en) * 1996-05-02 1998-01-29 Haerle Hans A Dipl Ing Hollow camshaft produced out of a length of pipe
JPH11241605A (en) * 1998-02-24 1999-09-07 Tube Foming Co Ltd Hollow integrated cam shaft and manufacture thereof
DE19907258C1 (en) * 1999-02-21 2000-09-07 Saechsische Elektronenstrahl G Camshaft for motor vehicle engines
DE20121375U1 (en) * 2001-10-11 2002-08-08 Salzgitter Antriebstechnik Gmb Camshaft designed as a hollow shaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005115658A1 (en) * 2004-05-25 2005-12-08 Daimlerchrysler Ag Camshaft and method for the production thereof

Also Published As

Publication number Publication date
WO2004029421A1 (en) 2004-04-08
DE50302979D1 (en) 2006-05-24
EP1556585A1 (en) 2005-07-27
EP1556585B1 (en) 2006-04-12
AU2003275979A1 (en) 2004-04-19
ATE323216T1 (en) 2006-04-15
ES2262023T3 (en) 2006-11-16
AU2003275979A8 (en) 2004-04-19

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8139 Disposal/non-payment of the annual fee